Merge branch 'development' into feature/instant/asset-buyer-check-liquidity

262 files changed, 5745 insertions, 5523 deletions

diff --git a/contracts/examples/CHANGELOG.json b/contracts/examples/CHANGELOG.json
index 50872eb07..ee239b318 100644
--- a/contracts/examples/CHANGELOG.json
+++ b/contracts/examples/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.3",
         "changes": [
diff --git a/contracts/examples/CHANGELOG.md b/contracts/examples/CHANGELOG.md
index 4732f1746..6d53a0b9c 100644
--- a/contracts/examples/CHANGELOG.md
+++ b/contracts/examples/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.5 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.4 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.3 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/contracts/examples/package.json b/contracts/examples/package.json
index d04b5fc44..286d0f508 100644
--- a/contracts/examples/package.json
+++ b/contracts/examples/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-examples",
-    "version": "1.0.3",
+    "version": "1.0.5",
     "engines": {
         "node": ">=6.12"
     },
@@ -33,12 +33,12 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/examples/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^1.0.20",
-        "@0x/contracts-test-utils": "^1.0.3",
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/sol-compiler": "^2.0.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/abi-gen": "^1.0.22",
+        "@0x/contracts-test-utils": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/tslint-config": "^2.0.2",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -58,20 +58,20 @@
         "yargs": "^10.0.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^3.0.11",
-        "@0x/contracts-interfaces": "^1.0.3",
-        "@0x/contracts-libs": "^1.0.3",
-        "@0x/contracts-multisig": "^1.0.3",
-        "@0x/contracts-tokens": "^1.0.3",
-        "@0x/contracts-utils": "^1.0.3",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contracts-interfaces": "^1.0.5",
+        "@0x/contracts-libs": "^1.0.5",
+        "@0x/contracts-multisig": "^1.0.5",
+        "@0x/contracts-tokens": "^1.0.5",
+        "@0x/contracts-utils": "^1.0.5",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/js-combinatorics": "^0.5.29",
         "bn.js": "^4.11.8",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "lodash": "^4.17.5"
     },
diff --git a/contracts/extensions/CHANGELOG.json b/contracts/extensions/CHANGELOG.json
index de1ada0a8..4f087d0b5 100644
--- a/contracts/extensions/CHANGELOG.json
+++ b/contracts/extensions/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.2.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.2.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "1.2.0",
         "changes": [
             {
diff --git a/contracts/extensions/CHANGELOG.md b/contracts/extensions/CHANGELOG.md
index 452cc8e82..c6d447129 100644
--- a/contracts/extensions/CHANGELOG.md
+++ b/contracts/extensions/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.2.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.2.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.2.0 - _January 9, 2019_
 
     * Added Dutch Auction Wrapper (#1465)
diff --git a/contracts/extensions/package.json b/contracts/extensions/package.json
index 99b5b35a8..a7a8b1b93 100644
--- a/contracts/extensions/package.json
+++ b/contracts/extensions/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-extensions",
-    "version": "1.2.0",
+    "version": "1.2.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -44,13 +44,13 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/extensions/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^1.0.20",
-        "@0x/contract-wrappers": "^4.2.0",
-        "@0x/contracts-test-utils": "^1.0.3",
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/sol-compiler": "^2.0.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/abi-gen": "^1.0.22",
+        "@0x/contract-wrappers": "^5.0.0",
+        "@0x/contracts-test-utils": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/tslint-config": "^2.0.2",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -70,20 +70,20 @@
         "yargs": "^10.0.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^3.0.11",
-        "@0x/contracts-interfaces": "^1.0.3",
-        "@0x/contracts-libs": "^1.0.3",
-        "@0x/contracts-protocol": "^2.2.0",
-        "@0x/contracts-tokens": "^1.0.3",
-        "@0x/contracts-utils": "^1.0.3",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contracts-interfaces": "^1.0.5",
+        "@0x/contracts-libs": "^1.0.5",
+        "@0x/contracts-protocol": "^2.2.2",
+        "@0x/contracts-tokens": "^1.0.5",
+        "@0x/contracts-utils": "^1.0.5",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/js-combinatorics": "^0.5.29",
         "bn.js": "^4.11.8",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "lodash": "^4.17.5"
     },
diff --git a/contracts/extensions/test/extensions/balance_threshold_filter.ts b/contracts/extensions/test/extensions/balance_threshold_filter.ts
index 07199d60b..a1c322e08 100644
--- a/contracts/extensions/test/extensions/balance_threshold_filter.ts
+++ b/contracts/extensions/test/extensions/balance_threshold_filter.ts
@@ -1457,7 +1457,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
             const orderInfoBeforeCancelling = await erc721MakerBalanceThresholdWrapper.getOrderInfoAsync(
                 validSignedOrder,
             );
-            expect(orderInfoBeforeCancelling.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+            expect(orderInfoBeforeCancelling.orderStatus).to.be.equal(OrderStatus.Fillable);
             // Cancel
             const txReceipt = await erc721MakerBalanceThresholdWrapper.cancelOrderAsync(
                 validSignedOrder,
@@ -1470,7 +1470,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
             const orderInfoAfterCancelling = await erc721MakerBalanceThresholdWrapper.getOrderInfoAsync(
                 validSignedOrder,
             );
-            expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.CANCELLED);
+            expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.Cancelled);
         });
         it('Should successfully cancel order if maker does not meet balance threshold', async () => {
             // Create order where maker does not meet balance threshold
@@ -1479,7 +1479,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
             const orderInfoBeforeCancelling = await erc721NonValidBalanceThresholdWrapper.getOrderInfoAsync(
                 signedOrderWithBadMakerAddress,
             );
-            expect(orderInfoBeforeCancelling.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+            expect(orderInfoBeforeCancelling.orderStatus).to.be.equal(OrderStatus.Fillable);
             // Cancel
             const txReceipt = await erc721NonValidBalanceThresholdWrapper.cancelOrderAsync(
                 signedOrderWithBadMakerAddress,
@@ -1492,7 +1492,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
             const orderInfoAfterCancelling = await erc721MakerBalanceThresholdWrapper.getOrderInfoAsync(
                 signedOrderWithBadMakerAddress,
             );
-            expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.CANCELLED);
+            expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.Cancelled);
         });
     });
 
@@ -1512,7 +1512,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
                 const orderInfoBeforeCancelling = await erc721MakerBalanceThresholdWrapper.getOrderInfoAsync(
                     signedOrder,
                 );
-                return expect(orderInfoBeforeCancelling.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+                return expect(orderInfoBeforeCancelling.orderStatus).to.be.equal(OrderStatus.Fillable);
             });
             // Cancel
             const txReceipt = await erc721MakerBalanceThresholdWrapper.batchCancelOrdersAsync(
@@ -1527,7 +1527,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
                 const orderInfoAfterCancelling = await erc721MakerBalanceThresholdWrapper.getOrderInfoAsync(
                     signedOrder,
                 );
-                return expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.CANCELLED);
+                return expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.Cancelled);
             });
         });
         it('Should successfully batch cancel order if maker does not meet balance threshold', async () => {
@@ -1542,7 +1542,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
                 const orderInfoBeforeCancelling = await erc721NonValidBalanceThresholdWrapper.getOrderInfoAsync(
                     signedOrder,
                 );
-                return expect(orderInfoBeforeCancelling.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+                return expect(orderInfoBeforeCancelling.orderStatus).to.be.equal(OrderStatus.Fillable);
             });
             // Cancel
             const txReceipt = await erc721NonValidBalanceThresholdWrapper.batchCancelOrdersAsync(
@@ -1557,7 +1557,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
                 const orderInfoAfterCancelling = await erc721NonValidBalanceThresholdWrapper.getOrderInfoAsync(
                     signedOrder,
                 );
-                return expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.CANCELLED);
+                return expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.Cancelled);
             });
         });
     });
@@ -1578,7 +1578,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
                 const orderInfoBeforeCancelling = await erc721MakerBalanceThresholdWrapper.getOrderInfoAsync(
                     signedOrder,
                 );
-                return expect(orderInfoBeforeCancelling.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+                return expect(orderInfoBeforeCancelling.orderStatus).to.be.equal(OrderStatus.Fillable);
             });
             // Cancel
             const cancelOrdersUpToThisSalt = new BigNumber(1);
@@ -1596,9 +1596,9 @@ describe(ContractName.BalanceThresholdFilter, () => {
                 );
                 const saltAsBigNumber = new BigNumber(salt);
                 if (saltAsBigNumber.lessThanOrEqualTo(cancelOrdersUpToThisSalt)) {
-                    return expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.CANCELLED);
+                    return expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.Cancelled);
                 } else {
-                    return expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+                    return expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.Fillable);
                 }
             });
         });
@@ -1614,7 +1614,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
                 const orderInfoBeforeCancelling = await erc721NonValidBalanceThresholdWrapper.getOrderInfoAsync(
                     signedOrder,
                 );
-                return expect(orderInfoBeforeCancelling.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+                return expect(orderInfoBeforeCancelling.orderStatus).to.be.equal(OrderStatus.Fillable);
             });
             // Cancel
             const cancelOrdersUpToThisSalt = new BigNumber(1);
@@ -1632,9 +1632,9 @@ describe(ContractName.BalanceThresholdFilter, () => {
                 );
                 const saltAsBigNumber = new BigNumber(salt);
                 if (saltAsBigNumber.lessThanOrEqualTo(cancelOrdersUpToThisSalt)) {
-                    return expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.CANCELLED);
+                    return expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.Cancelled);
                 } else {
-                    return expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+                    return expect(orderInfoAfterCancelling.orderStatus).to.be.equal(OrderStatus.Fillable);
                 }
             });
         });
diff --git a/contracts/extensions/test/extensions/order_validator.ts b/contracts/extensions/test/extensions/order_validator.ts
index 82a6b937f..7d8675f36 100644
--- a/contracts/extensions/test/extensions/order_validator.ts
+++ b/contracts/extensions/test/extensions/order_validator.ts
@@ -432,7 +432,7 @@ describe('OrderValidator', () => {
                 takerAddress,
             );
             const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
-            expect(orderInfo.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+            expect(orderInfo.orderStatus).to.be.equal(OrderStatus.Fillable);
             expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
             expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(constants.ZERO_AMOUNT);
             expect(traderInfo.makerBalance).to.be.bignumber.equal(constants.ZERO_AMOUNT);
@@ -485,7 +485,7 @@ describe('OrderValidator', () => {
                 takerAddress,
             );
             const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
-            expect(orderInfo.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+            expect(orderInfo.orderStatus).to.be.equal(OrderStatus.Fillable);
             expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
             expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(constants.ZERO_AMOUNT);
             expect(traderInfo.makerBalance).to.be.bignumber.equal(makerBalance);
@@ -514,10 +514,10 @@ describe('OrderValidator', () => {
             ] = await orderValidator.getOrdersAndTradersInfo.callAsync(orders, takers);
             const expectedOrderHash1 = orderHashUtils.getOrderHashHex(signedOrder);
             const expectedOrderHash2 = orderHashUtils.getOrderHashHex(signedOrder2);
-            expect(orderInfo1.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+            expect(orderInfo1.orderStatus).to.be.equal(OrderStatus.Fillable);
             expect(orderInfo1.orderHash).to.be.equal(expectedOrderHash1);
             expect(orderInfo1.orderTakerAssetFilledAmount).to.be.bignumber.equal(constants.ZERO_AMOUNT);
-            expect(orderInfo2.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+            expect(orderInfo2.orderStatus).to.be.equal(OrderStatus.Fillable);
             expect(orderInfo2.orderHash).to.be.equal(expectedOrderHash2);
             expect(orderInfo2.orderTakerAssetFilledAmount).to.be.bignumber.equal(constants.ZERO_AMOUNT);
             expect(traderInfo1.makerBalance).to.be.bignumber.equal(constants.ZERO_AMOUNT);
@@ -581,10 +581,10 @@ describe('OrderValidator', () => {
             ] = await orderValidator.getOrdersAndTradersInfo.callAsync(orders, takers);
             const expectedOrderHash1 = orderHashUtils.getOrderHashHex(signedOrder);
             const expectedOrderHash2 = orderHashUtils.getOrderHashHex(signedOrder2);
-            expect(orderInfo1.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+            expect(orderInfo1.orderStatus).to.be.equal(OrderStatus.Fillable);
             expect(orderInfo1.orderHash).to.be.equal(expectedOrderHash1);
             expect(orderInfo1.orderTakerAssetFilledAmount).to.be.bignumber.equal(constants.ZERO_AMOUNT);
-            expect(orderInfo2.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+            expect(orderInfo2.orderStatus).to.be.equal(OrderStatus.Fillable);
             expect(orderInfo2.orderHash).to.be.equal(expectedOrderHash2);
             expect(orderInfo2.orderTakerAssetFilledAmount).to.be.bignumber.equal(constants.ZERO_AMOUNT);
             expect(traderInfo1.makerBalance).to.be.bignumber.equal(makerBalance);
diff --git a/contracts/interfaces/CHANGELOG.json b/contracts/interfaces/CHANGELOG.json
index 50872eb07..ee239b318 100644
--- a/contracts/interfaces/CHANGELOG.json
+++ b/contracts/interfaces/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.3",
         "changes": [
diff --git a/contracts/interfaces/CHANGELOG.md b/contracts/interfaces/CHANGELOG.md
index 4732f1746..6d53a0b9c 100644
--- a/contracts/interfaces/CHANGELOG.md
+++ b/contracts/interfaces/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.5 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.4 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.3 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/contracts/interfaces/package.json b/contracts/interfaces/package.json
index 9017f0a73..3550487da 100644
--- a/contracts/interfaces/package.json
+++ b/contracts/interfaces/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-interfaces",
-    "version": "1.0.3",
+    "version": "1.0.5",
     "engines": {
         "node": ">=6.12"
     },
@@ -30,9 +30,9 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/interfaces/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^1.0.20",
-        "@0x/sol-compiler": "^2.0.0",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/abi-gen": "^1.0.22",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/tslint-config": "^2.0.2",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
         "solhint": "^1.4.1",
@@ -41,14 +41,14 @@
         "yargs": "^10.0.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^3.0.11",
-        "@0x/contracts-libs": "^1.0.3",
-        "@0x/contracts-utils": "^1.0.3",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
-        "ethereum-types": "^1.1.4",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contracts-libs": "^1.0.5",
+        "@0x/contracts-utils": "^1.0.5",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
+        "ethereum-types": "^1.1.6",
         "lodash": "^4.17.5"
     },
     "publishConfig": {
diff --git a/contracts/libs/CHANGELOG.json b/contracts/libs/CHANGELOG.json
index 50872eb07..ee239b318 100644
--- a/contracts/libs/CHANGELOG.json
+++ b/contracts/libs/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.3",
         "changes": [
diff --git a/contracts/libs/CHANGELOG.md b/contracts/libs/CHANGELOG.md
index 4732f1746..6d53a0b9c 100644
--- a/contracts/libs/CHANGELOG.md
+++ b/contracts/libs/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.5 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.4 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.3 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/contracts/libs/package.json b/contracts/libs/package.json
index 9d28cc038..abbdfdb97 100644
--- a/contracts/libs/package.json
+++ b/contracts/libs/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-libs",
-    "version": "1.0.3",
+    "version": "1.0.5",
     "engines": {
         "node": ">=6.12"
     },
@@ -44,12 +44,12 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/libs/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^1.0.20",
-        "@0x/contracts-test-utils": "^1.0.3",
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/sol-compiler": "^2.0.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/abi-gen": "^1.0.22",
+        "@0x/contracts-test-utils": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/tslint-config": "^2.0.2",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -69,17 +69,17 @@
         "yargs": "^10.0.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^3.0.11",
-        "@0x/contracts-multisig": "^1.0.3",
-        "@0x/contracts-utils": "^1.0.3",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contracts-multisig": "^1.0.5",
+        "@0x/contracts-utils": "^1.0.5",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/js-combinatorics": "^0.5.29",
         "bn.js": "^4.11.8",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "lodash": "^4.17.5"
     },
diff --git a/contracts/multisig/CHANGELOG.json b/contracts/multisig/CHANGELOG.json
index 50872eb07..ee239b318 100644
--- a/contracts/multisig/CHANGELOG.json
+++ b/contracts/multisig/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.3",
         "changes": [
diff --git a/contracts/multisig/CHANGELOG.md b/contracts/multisig/CHANGELOG.md
index 4732f1746..6d53a0b9c 100644
--- a/contracts/multisig/CHANGELOG.md
+++ b/contracts/multisig/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.5 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.4 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.3 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/contracts/multisig/package.json b/contracts/multisig/package.json
index e0bbc001d..f819c59f8 100644
--- a/contracts/multisig/package.json
+++ b/contracts/multisig/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-multisig",
-    "version": "1.0.3",
+    "version": "1.0.5",
     "engines": {
         "node": ">=6.12"
     },
@@ -44,12 +44,12 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/multisig/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^1.0.20",
-        "@0x/contracts-test-utils": "^1.0.3",
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/sol-compiler": "^2.0.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/abi-gen": "^1.0.22",
+        "@0x/contracts-test-utils": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/tslint-config": "^2.0.2",
         "@types/bn.js": "^4.11.0",
         "@types/ethereumjs-abi": "^0.6.0",
         "@types/lodash": "4.14.104",
@@ -69,13 +69,13 @@
         "yargs": "^10.0.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^3.0.11",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
-        "ethereum-types": "^1.1.4",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
+        "ethereum-types": "^1.1.6",
         "lodash": "^4.17.5"
     },
     "publishConfig": {
diff --git a/contracts/protocol/CHANGELOG.json b/contracts/protocol/CHANGELOG.json
index 6672ce9c3..96e2f8b70 100644
--- a/contracts/protocol/CHANGELOG.json
+++ b/contracts/protocol/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "2.2.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "2.2.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.2.0",
         "changes": [
             {
diff --git a/contracts/protocol/CHANGELOG.md b/contracts/protocol/CHANGELOG.md
index a8ad921a2..05d2ae6e2 100644
--- a/contracts/protocol/CHANGELOG.md
+++ b/contracts/protocol/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.2.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v2.2.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v2.2.0 - _January 9, 2019_
 
     * Added LibAddressArray (#1383)
diff --git a/contracts/protocol/package.json b/contracts/protocol/package.json
index 7d49dfbe8..420ca4e3d 100644
--- a/contracts/protocol/package.json
+++ b/contracts/protocol/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-protocol",
-    "version": "2.2.0",
+    "version": "2.2.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -44,11 +44,11 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/protocol/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^1.0.20",
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/sol-compiler": "^2.0.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/abi-gen": "^1.0.22",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/tslint-config": "^2.0.2",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -68,22 +68,22 @@
         "yargs": "^10.0.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^3.0.11",
-        "@0x/contracts-examples": "^1.0.3",
-        "@0x/contracts-interfaces": "^1.0.3",
-        "@0x/contracts-libs": "^1.0.3",
-        "@0x/contracts-multisig": "^1.0.3",
-        "@0x/contracts-test-utils": "^1.0.3",
-        "@0x/contracts-tokens": "^1.0.3",
-        "@0x/contracts-utils": "^1.0.3",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contracts-examples": "^1.0.5",
+        "@0x/contracts-interfaces": "^1.0.5",
+        "@0x/contracts-libs": "^1.0.5",
+        "@0x/contracts-multisig": "^1.0.5",
+        "@0x/contracts-test-utils": "^2.0.0",
+        "@0x/contracts-tokens": "^1.0.5",
+        "@0x/contracts-utils": "^1.0.5",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/js-combinatorics": "^0.5.29",
         "bn.js": "^4.11.8",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "lodash": "^4.17.5"
     },
diff --git a/contracts/protocol/test/exchange/core.ts b/contracts/protocol/test/exchange/core.ts
index 42db8623d..700643b79 100644
--- a/contracts/protocol/test/exchange/core.ts
+++ b/contracts/protocol/test/exchange/core.ts
@@ -1043,7 +1043,7 @@ describe('Exchange core', () => {
             const orderInfo = await exchangeWrapper.getOrderInfoAsync(signedOrder);
             const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
             const expectedTakerAssetFilledAmount = new BigNumber(0);
-            const expectedOrderStatus = OrderStatus.FILLABLE;
+            const expectedOrderStatus = OrderStatus.Fillable;
             expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
             expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
             expect(orderInfo.orderStatus).to.equal(expectedOrderStatus);
@@ -1053,7 +1053,7 @@ describe('Exchange core', () => {
             const orderInfo = await exchangeWrapper.getOrderInfoAsync(signedOrder);
             const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
             const expectedTakerAssetFilledAmount = signedOrder.takerAssetAmount;
-            const expectedOrderStatus = OrderStatus.FULLY_FILLED;
+            const expectedOrderStatus = OrderStatus.FullyFilled;
             expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
             expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
             expect(orderInfo.orderStatus).to.equal(expectedOrderStatus);
@@ -1064,7 +1064,7 @@ describe('Exchange core', () => {
             const orderInfo = await exchangeWrapper.getOrderInfoAsync(signedOrder);
             const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
             const expectedTakerAssetFilledAmount = takerAssetFillAmount;
-            const expectedOrderStatus = OrderStatus.FILLABLE;
+            const expectedOrderStatus = OrderStatus.Fillable;
             expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
             expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
             expect(orderInfo.orderStatus).to.equal(expectedOrderStatus);
@@ -1074,7 +1074,7 @@ describe('Exchange core', () => {
             const orderInfo = await exchangeWrapper.getOrderInfoAsync(signedOrder);
             const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
             const expectedTakerAssetFilledAmount = new BigNumber(0);
-            const expectedOrderStatus = OrderStatus.CANCELLED;
+            const expectedOrderStatus = OrderStatus.Cancelled;
             expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
             expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
             expect(orderInfo.orderStatus).to.equal(expectedOrderStatus);
@@ -1086,7 +1086,7 @@ describe('Exchange core', () => {
             const orderInfo = await exchangeWrapper.getOrderInfoAsync(signedOrder);
             const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
             const expectedTakerAssetFilledAmount = takerAssetFillAmount;
-            const expectedOrderStatus = OrderStatus.CANCELLED;
+            const expectedOrderStatus = OrderStatus.Cancelled;
             expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
             expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
             expect(orderInfo.orderStatus).to.equal(expectedOrderStatus);
@@ -1098,7 +1098,7 @@ describe('Exchange core', () => {
             const orderInfo = await exchangeWrapper.getOrderInfoAsync(signedOrder);
             const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
             const expectedTakerAssetFilledAmount = new BigNumber(0);
-            const expectedOrderStatus = OrderStatus.EXPIRED;
+            const expectedOrderStatus = OrderStatus.Expired;
             expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
             expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
             expect(orderInfo.orderStatus).to.equal(expectedOrderStatus);
@@ -1112,7 +1112,7 @@ describe('Exchange core', () => {
             const orderInfo = await exchangeWrapper.getOrderInfoAsync(signedOrder);
             const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
             const expectedTakerAssetFilledAmount = takerAssetFillAmount;
-            const expectedOrderStatus = OrderStatus.EXPIRED;
+            const expectedOrderStatus = OrderStatus.Expired;
             expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
             expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
             expect(orderInfo.orderStatus).to.equal(expectedOrderStatus);
@@ -1126,7 +1126,7 @@ describe('Exchange core', () => {
             const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
             const expectedTakerAssetFilledAmount = signedOrder.takerAssetAmount;
             // FULLY_FILLED takes precedence over EXPIRED
-            const expectedOrderStatus = OrderStatus.FULLY_FILLED;
+            const expectedOrderStatus = OrderStatus.FullyFilled;
             expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
             expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
             expect(orderInfo.orderStatus).to.equal(expectedOrderStatus);
@@ -1136,7 +1136,7 @@ describe('Exchange core', () => {
             const orderInfo = await exchangeWrapper.getOrderInfoAsync(signedOrder);
             const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
             const expectedTakerAssetFilledAmount = new BigNumber(0);
-            const expectedOrderStatus = OrderStatus.INVALID_MAKER_ASSET_AMOUNT;
+            const expectedOrderStatus = OrderStatus.InvalidMakerAssetAmount;
             expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
             expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
             expect(orderInfo.orderStatus).to.equal(expectedOrderStatus);
@@ -1146,7 +1146,7 @@ describe('Exchange core', () => {
             const orderInfo = await exchangeWrapper.getOrderInfoAsync(signedOrder);
             const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
             const expectedTakerAssetFilledAmount = new BigNumber(0);
-            const expectedOrderStatus = OrderStatus.INVALID_TAKER_ASSET_AMOUNT;
+            const expectedOrderStatus = OrderStatus.InvalidTakerAssetAmount;
             expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
             expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
             expect(orderInfo.orderStatus).to.equal(expectedOrderStatus);
diff --git a/contracts/protocol/test/exchange/wrapper.ts b/contracts/protocol/test/exchange/wrapper.ts
index c9efb0c9d..4c4506945 100644
--- a/contracts/protocol/test/exchange/wrapper.ts
+++ b/contracts/protocol/test/exchange/wrapper.ts
@@ -1288,7 +1288,7 @@ describe('Exchange wrappers', () => {
                 _.forEach(signedOrders, (signedOrder, index) => {
                     const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
                     const expectedTakerAssetFilledAmount = new BigNumber(0);
-                    const expectedOrderStatus = OrderStatus.FILLABLE;
+                    const expectedOrderStatus = OrderStatus.Fillable;
                     const orderInfo = ordersInfo[index];
                     expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
                     expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
@@ -1303,7 +1303,7 @@ describe('Exchange wrappers', () => {
                 _.forEach(signedOrders, (signedOrder, index) => {
                     const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
                     const expectedTakerAssetFilledAmount = signedOrder.takerAssetAmount.div(2);
-                    const expectedOrderStatus = OrderStatus.FILLABLE;
+                    const expectedOrderStatus = OrderStatus.Fillable;
                     const orderInfo = ordersInfo[index];
                     expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
                     expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
@@ -1317,7 +1317,7 @@ describe('Exchange wrappers', () => {
                 _.forEach(signedOrders, (signedOrder, index) => {
                     const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
                     const expectedTakerAssetFilledAmount = signedOrder.takerAssetAmount;
-                    const expectedOrderStatus = OrderStatus.FULLY_FILLED;
+                    const expectedOrderStatus = OrderStatus.FullyFilled;
                     const orderInfo = ordersInfo[index];
                     expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
                     expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
@@ -1331,7 +1331,7 @@ describe('Exchange wrappers', () => {
                 _.forEach(signedOrders, (signedOrder, index) => {
                     const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
                     const expectedTakerAssetFilledAmount = new BigNumber(0);
-                    const expectedOrderStatus = OrderStatus.CANCELLED;
+                    const expectedOrderStatus = OrderStatus.Cancelled;
                     const orderInfo = ordersInfo[index];
                     expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
                     expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
@@ -1347,7 +1347,7 @@ describe('Exchange wrappers', () => {
                 _.forEach(signedOrders, (signedOrder, index) => {
                     const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
                     const expectedTakerAssetFilledAmount = signedOrder.takerAssetAmount.div(2);
-                    const expectedOrderStatus = OrderStatus.CANCELLED;
+                    const expectedOrderStatus = OrderStatus.Cancelled;
                     const orderInfo = ordersInfo[index];
                     expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
                     expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
@@ -1363,7 +1363,7 @@ describe('Exchange wrappers', () => {
                 _.forEach(signedOrders, (signedOrder, index) => {
                     const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
                     const expectedTakerAssetFilledAmount = new BigNumber(0);
-                    const expectedOrderStatus = OrderStatus.EXPIRED;
+                    const expectedOrderStatus = OrderStatus.Expired;
                     const orderInfo = ordersInfo[index];
                     expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
                     expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
@@ -1381,7 +1381,7 @@ describe('Exchange wrappers', () => {
                 _.forEach(signedOrders, (signedOrder, index) => {
                     const expectedOrderHash = orderHashUtils.getOrderHashHex(signedOrder);
                     const expectedTakerAssetFilledAmount = signedOrder.takerAssetAmount.div(2);
-                    const expectedOrderStatus = OrderStatus.EXPIRED;
+                    const expectedOrderStatus = OrderStatus.Expired;
                     const orderInfo = ordersInfo[index];
                     expect(orderInfo.orderHash).to.be.equal(expectedOrderHash);
                     expect(orderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(expectedTakerAssetFilledAmount);
@@ -1408,7 +1408,7 @@ describe('Exchange wrappers', () => {
 
                 const expectedUnfilledOrderHash = orderHashUtils.getOrderHashHex(unfilledOrder);
                 const expectedUnfilledTakerAssetFilledAmount = new BigNumber(0);
-                const expectedUnfilledOrderStatus = OrderStatus.FILLABLE;
+                const expectedUnfilledOrderStatus = OrderStatus.Fillable;
                 const unfilledOrderInfo = ordersInfo[0];
                 expect(unfilledOrderInfo.orderHash).to.be.equal(expectedUnfilledOrderHash);
                 expect(unfilledOrderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(
@@ -1418,7 +1418,7 @@ describe('Exchange wrappers', () => {
 
                 const expectedPartialOrderHash = orderHashUtils.getOrderHashHex(partiallyFilledOrder);
                 const expectedPartialTakerAssetFilledAmount = partiallyFilledOrder.takerAssetAmount.div(2);
-                const expectedPartialOrderStatus = OrderStatus.FILLABLE;
+                const expectedPartialOrderStatus = OrderStatus.Fillable;
                 const partialOrderInfo = ordersInfo[1];
                 expect(partialOrderInfo.orderHash).to.be.equal(expectedPartialOrderHash);
                 expect(partialOrderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(
@@ -1428,7 +1428,7 @@ describe('Exchange wrappers', () => {
 
                 const expectedFilledOrderHash = orderHashUtils.getOrderHashHex(fullyFilledOrder);
                 const expectedFilledTakerAssetFilledAmount = fullyFilledOrder.takerAssetAmount;
-                const expectedFilledOrderStatus = OrderStatus.FULLY_FILLED;
+                const expectedFilledOrderStatus = OrderStatus.FullyFilled;
                 const filledOrderInfo = ordersInfo[2];
                 expect(filledOrderInfo.orderHash).to.be.equal(expectedFilledOrderHash);
                 expect(filledOrderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(
@@ -1438,7 +1438,7 @@ describe('Exchange wrappers', () => {
 
                 const expectedCancelledOrderHash = orderHashUtils.getOrderHashHex(cancelledOrder);
                 const expectedCancelledTakerAssetFilledAmount = new BigNumber(0);
-                const expectedCancelledOrderStatus = OrderStatus.CANCELLED;
+                const expectedCancelledOrderStatus = OrderStatus.Cancelled;
                 const cancelledOrderInfo = ordersInfo[3];
                 expect(cancelledOrderInfo.orderHash).to.be.equal(expectedCancelledOrderHash);
                 expect(cancelledOrderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(
@@ -1448,7 +1448,7 @@ describe('Exchange wrappers', () => {
 
                 const expectedExpiredOrderHash = orderHashUtils.getOrderHashHex(expiredOrder);
                 const expectedExpiredTakerAssetFilledAmount = new BigNumber(0);
-                const expectedExpiredOrderStatus = OrderStatus.EXPIRED;
+                const expectedExpiredOrderStatus = OrderStatus.Expired;
                 const expiredOrderInfo = ordersInfo[4];
                 expect(expiredOrderInfo.orderHash).to.be.equal(expectedExpiredOrderHash);
                 expect(expiredOrderInfo.orderTakerAssetFilledAmount).to.be.bignumber.equal(
diff --git a/contracts/protocol/test/utils/exchange_wrapper.ts b/contracts/protocol/test/utils/exchange_wrapper.ts
index cb6dce901..437882b41 100644
--- a/contracts/protocol/test/utils/exchange_wrapper.ts
+++ b/contracts/protocol/test/utils/exchange_wrapper.ts
@@ -8,13 +8,16 @@ import {
 } from '@0x/contracts-test-utils';
 import { artifacts as tokensArtifacts } from '@0x/contracts-tokens';
 import { SignedOrder } from '@0x/types';
-import { BigNumber } from '@0x/utils';
+import { AbiEncoder, BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
-import { Provider, TransactionReceiptWithDecodedLogs } from 'ethereum-types';
+import { MethodAbi, Provider, TransactionReceiptWithDecodedLogs } from 'ethereum-types';
+import * as _ from 'lodash';
 
 import { ExchangeContract } from '../../generated-wrappers/exchange';
 import { artifacts } from '../../src/artifacts';
 
+import { AbiDecodedFillOrderData } from './types';
+
 export class ExchangeWrapper {
     private readonly _exchange: ExchangeContract;
     private readonly _web3Wrapper: Web3Wrapper;
@@ -275,6 +278,14 @@ export class ExchangeWrapper {
         );
         return data;
     }
+    public abiDecodeFillOrder(data: string): AbiDecodedFillOrderData {
+        // Lookup fillOrder ABI in exchange abi
+        const fillOrderAbi = _.find(this._exchange.abi, { name: 'fillOrder' }) as MethodAbi;
+        // Decode input data
+        const abiEncoder = new AbiEncoder.Method(fillOrderAbi);
+        const decodedData = abiEncoder.decode(data) as AbiDecodedFillOrderData;
+        return decodedData;
+    }
     public getExchangeAddress(): string {
         return this._exchange.address;
     }
diff --git a/contracts/protocol/test/utils/fill_order_combinatorial_utils.ts b/contracts/protocol/test/utils/fill_order_combinatorial_utils.ts
index 5d0ea07a8..2fd33bebd 100644
--- a/contracts/protocol/test/utils/fill_order_combinatorial_utils.ts
+++ b/contracts/protocol/test/utils/fill_order_combinatorial_utils.ts
@@ -613,13 +613,13 @@ export class FillOrderCombinatorialUtils {
         takerAssetFillAmount: BigNumber,
     ): Promise<void> {
         const params = orderUtils.createFill(signedOrder, takerAssetFillAmount);
-        const expectedAbiEncodedData = this.exchangeWrapper.abiEncodeFillOrder(signedOrder, { takerAssetFillAmount });
-        const libsAbiEncodedData = await this.testLibsContract.publicAbiEncodeFillOrder.callAsync(
+        const abiDataEncodedByContract = await this.testLibsContract.publicAbiEncodeFillOrder.callAsync(
             params.order,
             params.takerAssetFillAmount,
             params.signature,
         );
-        expect(libsAbiEncodedData).to.be.equal(expectedAbiEncodedData, 'ABIEncodedFillOrderData');
+        const paramsDecodedByClient = this.exchangeWrapper.abiDecodeFillOrder(abiDataEncodedByContract);
+        expect(paramsDecodedByClient).to.be.deep.equal(params, 'ABIEncodedFillOrderData');
     }
     private async _getTakerAssetFillAmountAsync(
         signedOrder: SignedOrder,
diff --git a/contracts/protocol/test/utils/match_order_tester.ts b/contracts/protocol/test/utils/match_order_tester.ts
index 8f574704e..31864820f 100644
--- a/contracts/protocol/test/utils/match_order_tester.ts
+++ b/contracts/protocol/test/utils/match_order_tester.ts
@@ -268,15 +268,15 @@ export class MatchOrderTester {
         const maxAmountBoughtByLeftMaker = signedOrderLeft.takerAssetAmount.minus(initialLeftOrderFilledAmount);
         const leftOrderInfo: OrderInfo = await this._exchangeWrapper.getOrderInfoAsync(signedOrderLeft);
         const leftExpectedStatus = expectedTransferAmounts.amountBoughtByLeftMaker.equals(maxAmountBoughtByLeftMaker)
-            ? OrderStatus.FULLY_FILLED
-            : OrderStatus.FILLABLE;
+            ? OrderStatus.FullyFilled
+            : OrderStatus.Fillable;
         expect(leftOrderInfo.orderStatus, 'Checking exchange status for left order').to.be.equal(leftExpectedStatus);
         // Assert right order status
         const maxAmountBoughtByRightMaker = signedOrderRight.takerAssetAmount.minus(initialRightOrderFilledAmount);
         const rightOrderInfo: OrderInfo = await this._exchangeWrapper.getOrderInfoAsync(signedOrderRight);
         const rightExpectedStatus = expectedTransferAmounts.amountBoughtByRightMaker.equals(maxAmountBoughtByRightMaker)
-            ? OrderStatus.FULLY_FILLED
-            : OrderStatus.FILLABLE;
+            ? OrderStatus.FullyFilled
+            : OrderStatus.Fillable;
         expect(rightOrderInfo.orderStatus, 'Checking exchange status for right order').to.be.equal(rightExpectedStatus);
     }
     /// @dev Asserts account balances after matching orders.
diff --git a/contracts/protocol/test/utils/types.ts b/contracts/protocol/test/utils/types.ts
new file mode 100644
index 000000000..5f12635a7
--- /dev/null
+++ b/contracts/protocol/test/utils/types.ts
@@ -0,0 +1,8 @@
+import { SignedOrder } from '@0x/types';
+import { BigNumber } from '@0x/utils';
+
+export interface AbiDecodedFillOrderData {
+    order: SignedOrder;
+    takerAssetFillAmount: BigNumber;
+    signature: string;
+}
diff --git a/contracts/test-utils/CHANGELOG.json b/contracts/test-utils/CHANGELOG.json
index 8ba8d179a..53fc1fc3a 100644
--- a/contracts/test-utils/CHANGELOG.json
+++ b/contracts/test-utils/CHANGELOG.json
@@ -1,5 +1,24 @@
 [
     {
+        "version": "2.0.0",
+        "changes": [
+            {
+                "note": "Renamed OrderStatus enum members to PascalCase to conform with tslint enum-naming rule",
+                "pr": 1474
+            }
+        ],
+        "timestamp": 1547561734
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.3",
         "changes": [
diff --git a/contracts/test-utils/CHANGELOG.md b/contracts/test-utils/CHANGELOG.md
index 4732f1746..63baf7faf 100644
--- a/contracts/test-utils/CHANGELOG.md
+++ b/contracts/test-utils/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.0 - _January 15, 2019_
+
+    * Renamed OrderStatus enum members to PascalCase to conform with tslint enum-naming rule (#1474)
+
+## v1.0.4 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.3 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/contracts/test-utils/package.json b/contracts/test-utils/package.json
index 2653fc0e4..92fd6a7ca 100644
--- a/contracts/test-utils/package.json
+++ b/contracts/test-utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-test-utils",
-    "version": "1.0.3",
+    "version": "2.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -40,19 +40,19 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/sol-coverage": "^1.0.0",
-        "@0x/sol-profiler": "^1.0.0",
-        "@0x/sol-trace": "^1.0.0",
-        "@0x/abi-gen": "^1.0.20",
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/sol-compiler": "^2.0.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/tslint-config": "^2.0.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/abi-gen": "^1.0.22",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/sol-coverage": "^1.0.2",
+        "@0x/sol-profiler": "^1.0.2",
+        "@0x/sol-trace": "^1.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/tslint-config": "^2.0.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/bn.js": "^4.11.0",
         "@types/ethereumjs-abi": "^0.6.0",
         "@types/js-combinatorics": "^0.5.29",
@@ -63,7 +63,7 @@
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^2.0.1",
         "dirty-chai": "^2.0.1",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-abi": "0.6.5",
         "ethereumjs-util": "^5.1.1",
         "ethers": "~4.0.4",
diff --git a/contracts/test-utils/src/types.ts b/contracts/test-utils/src/types.ts
index 1630eab0d..60cb2b102 100644
--- a/contracts/test-utils/src/types.ts
+++ b/contracts/test-utils/src/types.ts
@@ -70,13 +70,13 @@ export interface Token {
 }
 
 export enum OrderStatus {
-    INVALID,
-    INVALID_MAKER_ASSET_AMOUNT,
-    INVALID_TAKER_ASSET_AMOUNT,
-    FILLABLE,
-    EXPIRED,
-    FULLY_FILLED,
-    CANCELLED,
+    Invalid,
+    InvalidMakerAssetAmount,
+    InvalidTakerAssetAmount,
+    Fillable,
+    Expired,
+    FullyFilled,
+    Cancelled,
 }
 
 export enum ContractName {
diff --git a/contracts/tokens/CHANGELOG.json b/contracts/tokens/CHANGELOG.json
index 50872eb07..ee239b318 100644
--- a/contracts/tokens/CHANGELOG.json
+++ b/contracts/tokens/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.3",
         "changes": [
diff --git a/contracts/tokens/CHANGELOG.md b/contracts/tokens/CHANGELOG.md
index 4732f1746..6d53a0b9c 100644
--- a/contracts/tokens/CHANGELOG.md
+++ b/contracts/tokens/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.5 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.4 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.3 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/contracts/tokens/package.json b/contracts/tokens/package.json
index 31bf8f7cc..c896d122d 100644
--- a/contracts/tokens/package.json
+++ b/contracts/tokens/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-tokens",
-    "version": "1.0.3",
+    "version": "1.0.5",
     "engines": {
         "node": ">=6.12"
     },
@@ -44,12 +44,12 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/tokens/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^1.0.20",
-        "@0x/contracts-test-utils": "^1.0.3",
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/sol-compiler": "^2.0.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/abi-gen": "^1.0.22",
+        "@0x/contracts-test-utils": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/tslint-config": "^2.0.2",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -69,19 +69,19 @@
         "yargs": "^10.0.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^3.0.11",
-        "@0x/contracts-interfaces": "^1.0.3",
-        "@0x/contracts-libs": "^1.0.3",
-        "@0x/contracts-multisig": "^1.0.3",
-        "@0x/contracts-utils": "^1.0.3",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contracts-interfaces": "^1.0.5",
+        "@0x/contracts-libs": "^1.0.5",
+        "@0x/contracts-multisig": "^1.0.5",
+        "@0x/contracts-utils": "^1.0.5",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/js-combinatorics": "^0.5.29",
         "bn.js": "^4.11.8",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "lodash": "^4.17.5"
     },
diff --git a/contracts/utils/CHANGELOG.json b/contracts/utils/CHANGELOG.json
index 50872eb07..ee239b318 100644
--- a/contracts/utils/CHANGELOG.json
+++ b/contracts/utils/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.3",
         "changes": [
diff --git a/contracts/utils/CHANGELOG.md b/contracts/utils/CHANGELOG.md
index 4732f1746..6d53a0b9c 100644
--- a/contracts/utils/CHANGELOG.md
+++ b/contracts/utils/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.5 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.4 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.3 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/contracts/utils/package.json b/contracts/utils/package.json
index 732556f34..a19519897 100644
--- a/contracts/utils/package.json
+++ b/contracts/utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-utils",
-    "version": "1.0.3",
+    "version": "1.0.5",
     "engines": {
         "node": ">=6.12"
     },
@@ -44,12 +44,12 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/contracts/utils/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^1.0.20",
-        "@0x/contracts-test-utils": "^1.0.3",
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/sol-compiler": "^2.0.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/abi-gen": "^1.0.22",
+        "@0x/contracts-test-utils": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/tslint-config": "^2.0.2",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "@types/node": "*",
@@ -70,14 +70,14 @@
         "yargs": "^10.0.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^3.0.11",
-        "@0x/contracts-multisig": "^1.0.3",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
-        "ethereum-types": "^1.1.4",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contracts-multisig": "^1.0.5",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "lodash": "^4.17.5"
     },
diff --git a/packages/0x.js/CHANGELOG.json b/packages/0x.js/CHANGELOG.json
index f11293e6d..a849a35a2 100644
--- a/packages/0x.js/CHANGELOG.json
+++ b/packages/0x.js/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "3.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
diff --git a/packages/0x.js/CHANGELOG.md b/packages/0x.js/CHANGELOG.md
index 258dee66a..c389c0e00 100644
--- a/packages/0x.js/CHANGELOG.md
+++ b/packages/0x.js/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v3.0.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v3.0.0 - _January 9, 2019_
 
     * Export `MultiAssetData`, `MultiAssetDataWithRecursiveDecoding`, `ObjectMap`, and `SingleAssetData` from types. No longer export `AssetData`. (#1363)
diff --git a/packages/0x.js/package.json b/packages/0x.js/package.json
index 74522c784..ca990c0a7 100644
--- a/packages/0x.js/package.json
+++ b/packages/0x.js/package.json
@@ -1,6 +1,6 @@
 {
     "name": "0x.js",
-    "version": "3.0.0",
+    "version": "3.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -42,11 +42,11 @@
     },
     "license": "Apache-2.0",
     "devDependencies": {
-        "@0x/abi-gen-wrappers": "^2.1.0",
-        "@0x/contract-addresses": "^2.1.0",
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/migrations": "^2.3.0",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/abi-gen-wrappers": "^2.2.0",
+        "@0x/contract-addresses": "^2.2.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/migrations": "^2.4.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
         "@types/node": "*",
@@ -72,18 +72,18 @@
         "webpack": "^4.20.2"
     },
     "dependencies": {
-        "@0x/assert": "^1.0.21",
-        "@0x/base-contract": "^3.0.11",
-        "@0x/contract-wrappers": "^4.2.0",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/order-watcher": "^2.4.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/assert": "^1.0.23",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contract-wrappers": "^5.0.0",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/order-watcher": "^2.4.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/web3-provider-engine": "^14.0.0",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethers": "~4.0.4",
         "lodash": "^4.17.5",
         "web3-provider-engine": "14.0.6"
diff --git a/packages/abi-gen-templates/CHANGELOG.json b/packages/abi-gen-templates/CHANGELOG.json
index baf852ad5..b825c4f1f 100644
--- a/packages/abi-gen-templates/CHANGELOG.json
+++ b/packages/abi-gen-templates/CHANGELOG.json
@@ -1,5 +1,14 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1543401373,
         "version": "1.0.1",
         "changes": [
diff --git a/packages/abi-gen-templates/CHANGELOG.md b/packages/abi-gen-templates/CHANGELOG.md
index 1c3f21c6c..5dd6d03e0 100644
--- a/packages/abi-gen-templates/CHANGELOG.md
+++ b/packages/abi-gen-templates/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.2 - _January 15, 2019_
+
+    * Dependencies updated
+
 ## v1.0.1 - _November 28, 2018_
 
     * Dependencies updated
diff --git a/packages/abi-gen-templates/contract.handlebars b/packages/abi-gen-templates/contract.handlebars
index 9b2a2b336..7e7171c70 100644
--- a/packages/abi-gen-templates/contract.handlebars
+++ b/packages/abi-gen-templates/contract.handlebars
@@ -85,7 +85,7 @@ export class {{contractName}}Contract extends BaseContract {
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('{{contractName}}', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-templates/package.json b/packages/abi-gen-templates/package.json
index 09872ab49..af66aeba0 100644
--- a/packages/abi-gen-templates/package.json
+++ b/packages/abi-gen-templates/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/abi-gen-templates",
-    "version": "1.0.1",
+    "version": "1.0.2",
     "engines": {
         "node": ">=6.12"
     },
diff --git a/packages/abi-gen-templates/partials/callAsync.handlebars b/packages/abi-gen-templates/partials/callAsync.handlebars
index ddbbe7508..ab9f2c21c 100644
--- a/packages/abi-gen-templates/partials/callAsync.handlebars
+++ b/packages/abi-gen-templates/partials/callAsync.handlebars
@@ -4,12 +4,7 @@ async callAsync(
     defaultBlock?: BlockParam,
 ): Promise<{{> return_type outputs=outputs}}> {
     const self = this as any as {{contractName}}Contract;
-    const functionSignature = '{{this.functionSignature}}';
-    const inputAbi = self._lookupAbi(functionSignature).inputs;
-    [{{> params inputs=inputs}}] = BaseContract._formatABIDataItemList(inputAbi, [{{> params inputs=inputs}}], BaseContract._bigNumberToString.bind(self));
-    BaseContract.strictArgumentEncodingCheck(inputAbi, [{{> params inputs=inputs}}]);
-    const ethersFunction = self._lookupEthersInterface(functionSignature).functions.{{this.name}};
-    const encodedData = ethersFunction.encode([{{> params inputs=inputs}}]);
+    const encodedData = self._strictEncodeArguments('{{this.functionSignature}}', [{{> params inputs=inputs}}]);
     const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
         {
             to: self.address,
@@ -20,9 +15,9 @@ async callAsync(
     );
     const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
     BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-    let resultArray = ethersFunction.decode(rawCallResult);
-    const outputAbi = (_.find(self.abi, {name: '{{this.name}}'}) as MethodAbi).outputs;
-    resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-    resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-    return resultArray{{#singleReturnValue}}[0]{{/singleReturnValue}};
+    const abiEncoder = self._lookupAbiEncoder('{{this.functionSignature}}');
+    // tslint:disable boolean-naming
+    const result = abiEncoder.strictDecodeReturnValue<{{> return_type outputs=outputs}}>(rawCallResult);
+    // tslint:enable boolean-naming
+    return result;
 },
diff --git a/packages/abi-gen-templates/partials/tx.handlebars b/packages/abi-gen-templates/partials/tx.handlebars
index b39156583..0f1027fae 100644
--- a/packages/abi-gen-templates/partials/tx.handlebars
+++ b/packages/abi-gen-templates/partials/tx.handlebars
@@ -9,10 +9,7 @@ public {{this.tsName}} = {
     {{/this.payable}}
     ): Promise<string> {
         const self = this as any as {{contractName}}Contract;
-        const inputAbi = self._lookupAbi('{{this.functionSignature}}').inputs;
-        [{{> params inputs=inputs}}] = BaseContract._formatABIDataItemList(inputAbi, [{{> params inputs=inputs}}], BaseContract._bigNumberToString.bind(self));
-        BaseContract.strictArgumentEncodingCheck(inputAbi, [{{> params inputs=inputs}}]);
-        const encodedData = self._lookupEthersInterface('{{this.functionSignature}}').functions.{{this.name}}.encode([{{> params inputs=inputs}}]);
+        const encodedData = self._strictEncodeArguments('{{this.functionSignature}}', [{{> params inputs=inputs}}]);
         const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
             {
                 to: self.address,
@@ -33,9 +30,7 @@ public {{this.tsName}} = {
         txData: Partial<TxData> = {},
     ): Promise<number> {
         const self = this as any as {{contractName}}Contract;
-        const inputAbi = self._lookupAbi('{{this.functionSignature}}').inputs;
-        [{{> params inputs=inputs}}] = BaseContract._formatABIDataItemList(inputAbi, [{{> params inputs=inputs}}], BaseContract._bigNumberToString);
-        const encodedData = self._lookupEthersInterface('{{this.functionSignature}}').functions.{{this.name}}.encode([{{> params inputs=inputs}}]);
+        const encodedData = self._strictEncodeArguments('{{this.functionSignature}}', [{{> params inputs=inputs}}]);
         const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
             {
                 to: self.address,
@@ -51,9 +46,7 @@ public {{this.tsName}} = {
     {{> typed_params inputs=inputs}}
     ): string {
         const self = this as any as {{contractName}}Contract;
-        const inputAbi = self._lookupAbi('{{this.functionSignature}}').inputs;
-        [{{> params inputs=inputs}}] = BaseContract._formatABIDataItemList(inputAbi, [{{> params inputs=inputs}}], BaseContract._bigNumberToString);
-        const abiEncodedTransactionData = self._lookupEthersInterface('{{this.functionSignature}}').functions.{{this.name}}.encode([{{> params inputs=inputs}}]);
+        const abiEncodedTransactionData = self._strictEncodeArguments('{{this.functionSignature}}', [{{> params inputs=inputs}}]);
         return abiEncodedTransactionData;
     },
     {{> callAsync}}
diff --git a/packages/abi-gen-wrappers/CHANGELOG.json b/packages/abi-gen-wrappers/CHANGELOG.json
index e73fa92bb..381b37cda 100644
--- a/packages/abi-gen-wrappers/CHANGELOG.json
+++ b/packages/abi-gen-wrappers/CHANGELOG.json
@@ -1,5 +1,24 @@
 [
     {
+        "version": "2.2.0",
+        "changes": [
+            {
+                "note": "Added `MultiAssetProxy`",
+                "pr": 1503
+            }
+        ],
+        "timestamp": 1547561734
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "2.1.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.1.0",
         "changes": [
             {
diff --git a/packages/abi-gen-wrappers/CHANGELOG.md b/packages/abi-gen-wrappers/CHANGELOG.md
index 4090e045a..294f39439 100644
--- a/packages/abi-gen-wrappers/CHANGELOG.md
+++ b/packages/abi-gen-wrappers/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.2.0 - _January 15, 2019_
+
+    * Added `MultiAssetProxy` (#1503)
+
+## v2.1.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v2.1.0 - _January 9, 2019_
 
     * Added Dutch Auction Wrapper (#1465)
diff --git a/packages/abi-gen-wrappers/package.json b/packages/abi-gen-wrappers/package.json
index f7d40d591..842ac024a 100644
--- a/packages/abi-gen-wrappers/package.json
+++ b/packages/abi-gen-wrappers/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/abi-gen-wrappers",
-    "version": "2.1.0",
+    "version": "2.2.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -18,7 +18,7 @@
         "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output src/generated-wrappers --backend ethers"
     },
     "config": {
-        "abis": "../contract-artifacts/artifacts/@(AssetProxyOwner|DutchAuction|DummyERC20Token|DummyERC721Token|ERC20Proxy|ERC20Token|ERC721Proxy|ERC721Token|Exchange|Forwarder|IValidator|IWallet|OrderValidator|WETH9|ZRXToken).json"
+        "abis": "../contract-artifacts/artifacts/@(AssetProxyOwner|DutchAuction|DummyERC20Token|DummyERC721Token|ERC20Proxy|ERC20Token|ERC721Proxy|ERC721Token|Exchange|Forwarder|IValidator|IWallet|MultiAssetProxy|OrderValidator|WETH9|ZRXToken).json"
     },
     "repository": {
         "type": "git",
@@ -30,19 +30,19 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/abi-gen-wrappers/README.md",
     "devDependencies": {
-        "@0x/abi-gen": "^1.0.20",
-        "@0x/abi-gen-templates": "^1.0.1",
-        "@0x/tslint-config": "^2.0.0",
-        "@0x/types": "^1.5.0",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
-        "ethereum-types": "^1.1.4",
+        "@0x/abi-gen": "^1.0.22",
+        "@0x/abi-gen-templates": "^1.0.2",
+        "@0x/tslint-config": "^2.0.2",
+        "@0x/types": "^1.5.2",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
+        "ethereum-types": "^1.1.6",
         "ethers": "~4.0.4",
         "lodash": "^4.17.5",
         "shx": "^0.2.2"
     },
     "dependencies": {
-        "@0x/base-contract": "^3.0.11"
+        "@0x/base-contract": "^3.0.13"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/asset_proxy_owner.ts b/packages/abi-gen-wrappers/src/generated-wrappers/asset_proxy_owner.ts
index 27f108ebc..cc42e7fb5 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/asset_proxy_owner.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/asset_proxy_owner.ts
@@ -105,15 +105,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'owners(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.owners;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('owners(uint256)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -125,11 +117,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'owners'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('owners(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public removeOwner = {
@@ -138,13 +131,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('removeOwner(address)').inputs;
-            [owner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [owner
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [owner
-    ]);
-            const encodedData = self._lookupEthersInterface('removeOwner(address)').functions.removeOwner.encode([owner
+            const encodedData = self._strictEncodeArguments('removeOwner(address)', [owner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -166,11 +153,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('removeOwner(address)').inputs;
-            [owner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [owner
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('removeOwner(address)').functions.removeOwner.encode([owner
+            const encodedData = self._strictEncodeArguments('removeOwner(address)', [owner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -187,11 +170,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             owner: string,
         ): string {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('removeOwner(address)').inputs;
-            [owner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [owner
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('removeOwner(address)').functions.removeOwner.encode([owner
+            const abiEncodedTransactionData = self._strictEncodeArguments('removeOwner(address)', [owner
     ]);
             return abiEncodedTransactionData;
         },
@@ -202,15 +181,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'removeOwner(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [owner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [owner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [owner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.removeOwner;
-            const encodedData = ethersFunction.encode([owner
+            const encodedData = self._strictEncodeArguments('removeOwner(address)', [owner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -222,11 +193,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'removeOwner'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('removeOwner(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public revokeConfirmation = {
@@ -235,13 +207,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('revokeConfirmation(uint256)').inputs;
-            [transactionId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [transactionId
-    ]);
-            const encodedData = self._lookupEthersInterface('revokeConfirmation(uint256)').functions.revokeConfirmation.encode([transactionId
+            const encodedData = self._strictEncodeArguments('revokeConfirmation(uint256)', [transactionId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -263,11 +229,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('revokeConfirmation(uint256)').inputs;
-            [transactionId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('revokeConfirmation(uint256)').functions.revokeConfirmation.encode([transactionId
+            const encodedData = self._strictEncodeArguments('revokeConfirmation(uint256)', [transactionId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -284,11 +246,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             transactionId: BigNumber,
         ): string {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('revokeConfirmation(uint256)').inputs;
-            [transactionId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('revokeConfirmation(uint256)').functions.revokeConfirmation.encode([transactionId
+            const abiEncodedTransactionData = self._strictEncodeArguments('revokeConfirmation(uint256)', [transactionId
     ]);
             return abiEncodedTransactionData;
         },
@@ -299,15 +257,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'revokeConfirmation(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [transactionId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [transactionId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.revokeConfirmation;
-            const encodedData = ethersFunction.encode([transactionId
+            const encodedData = self._strictEncodeArguments('revokeConfirmation(uint256)', [transactionId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -319,11 +269,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'revokeConfirmation'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('revokeConfirmation(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public isOwner = {
@@ -334,15 +285,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'isOwner(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.isOwner;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('isOwner(address)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -354,11 +297,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'isOwner'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('isOwner(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public confirmations = {
@@ -370,18 +314,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'confirmations(uint256,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0,
-        index_1
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0,
-        index_1
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0,
-        index_1
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.confirmations;
-            const encodedData = ethersFunction.encode([index_0,
+            const encodedData = self._strictEncodeArguments('confirmations(uint256,address)', [index_0,
         index_1
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -394,11 +327,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'confirmations'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('confirmations(uint256,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public executeRemoveAuthorizedAddressAtIndex = {
@@ -407,13 +341,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('executeRemoveAuthorizedAddressAtIndex(uint256)').inputs;
-            [transactionId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [transactionId
-    ]);
-            const encodedData = self._lookupEthersInterface('executeRemoveAuthorizedAddressAtIndex(uint256)').functions.executeRemoveAuthorizedAddressAtIndex.encode([transactionId
+            const encodedData = self._strictEncodeArguments('executeRemoveAuthorizedAddressAtIndex(uint256)', [transactionId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -435,11 +363,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('executeRemoveAuthorizedAddressAtIndex(uint256)').inputs;
-            [transactionId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('executeRemoveAuthorizedAddressAtIndex(uint256)').functions.executeRemoveAuthorizedAddressAtIndex.encode([transactionId
+            const encodedData = self._strictEncodeArguments('executeRemoveAuthorizedAddressAtIndex(uint256)', [transactionId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -456,11 +380,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             transactionId: BigNumber,
         ): string {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('executeRemoveAuthorizedAddressAtIndex(uint256)').inputs;
-            [transactionId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('executeRemoveAuthorizedAddressAtIndex(uint256)').functions.executeRemoveAuthorizedAddressAtIndex.encode([transactionId
+            const abiEncodedTransactionData = self._strictEncodeArguments('executeRemoveAuthorizedAddressAtIndex(uint256)', [transactionId
     ]);
             return abiEncodedTransactionData;
         },
@@ -471,15 +391,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'executeRemoveAuthorizedAddressAtIndex(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [transactionId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [transactionId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.executeRemoveAuthorizedAddressAtIndex;
-            const encodedData = ethersFunction.encode([transactionId
+            const encodedData = self._strictEncodeArguments('executeRemoveAuthorizedAddressAtIndex(uint256)', [transactionId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -491,11 +403,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'executeRemoveAuthorizedAddressAtIndex'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('executeRemoveAuthorizedAddressAtIndex(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public secondsTimeLocked = {
@@ -505,12 +418,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'secondsTimeLocked()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.secondsTimeLocked;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('secondsTimeLocked()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -521,11 +429,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'secondsTimeLocked'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('secondsTimeLocked()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getTransactionCount = {
@@ -537,18 +446,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'getTransactionCount(bool,bool)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [pending,
-        executed
-        ] = BaseContract._formatABIDataItemList(inputAbi, [pending,
-        executed
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [pending,
-        executed
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getTransactionCount;
-            const encodedData = ethersFunction.encode([pending,
+            const encodedData = self._strictEncodeArguments('getTransactionCount(bool,bool)', [pending,
         executed
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -561,11 +459,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getTransactionCount'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getTransactionCount(bool,bool)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public registerAssetProxy = {
@@ -575,16 +474,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('registerAssetProxy(address,bool)').inputs;
-            [assetProxyContract,
-    isRegistered
-    ] = BaseContract._formatABIDataItemList(inputAbi, [assetProxyContract,
-    isRegistered
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [assetProxyContract,
-    isRegistered
-    ]);
-            const encodedData = self._lookupEthersInterface('registerAssetProxy(address,bool)').functions.registerAssetProxy.encode([assetProxyContract,
+            const encodedData = self._strictEncodeArguments('registerAssetProxy(address,bool)', [assetProxyContract,
     isRegistered
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -609,13 +499,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('registerAssetProxy(address,bool)').inputs;
-            [assetProxyContract,
-    isRegistered
-    ] = BaseContract._formatABIDataItemList(inputAbi, [assetProxyContract,
-    isRegistered
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('registerAssetProxy(address,bool)').functions.registerAssetProxy.encode([assetProxyContract,
+            const encodedData = self._strictEncodeArguments('registerAssetProxy(address,bool)', [assetProxyContract,
     isRegistered
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -634,13 +518,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             isRegistered: boolean,
         ): string {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('registerAssetProxy(address,bool)').inputs;
-            [assetProxyContract,
-    isRegistered
-    ] = BaseContract._formatABIDataItemList(inputAbi, [assetProxyContract,
-    isRegistered
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('registerAssetProxy(address,bool)').functions.registerAssetProxy.encode([assetProxyContract,
+            const abiEncodedTransactionData = self._strictEncodeArguments('registerAssetProxy(address,bool)', [assetProxyContract,
     isRegistered
     ]);
             return abiEncodedTransactionData;
@@ -653,18 +531,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'registerAssetProxy(address,bool)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [assetProxyContract,
-        isRegistered
-        ] = BaseContract._formatABIDataItemList(inputAbi, [assetProxyContract,
-        isRegistered
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [assetProxyContract,
-        isRegistered
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.registerAssetProxy;
-            const encodedData = ethersFunction.encode([assetProxyContract,
+            const encodedData = self._strictEncodeArguments('registerAssetProxy(address,bool)', [assetProxyContract,
         isRegistered
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -677,11 +544,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'registerAssetProxy'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('registerAssetProxy(address,bool)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public addOwner = {
@@ -690,13 +558,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('addOwner(address)').inputs;
-            [owner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [owner
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [owner
-    ]);
-            const encodedData = self._lookupEthersInterface('addOwner(address)').functions.addOwner.encode([owner
+            const encodedData = self._strictEncodeArguments('addOwner(address)', [owner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -718,11 +580,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('addOwner(address)').inputs;
-            [owner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [owner
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('addOwner(address)').functions.addOwner.encode([owner
+            const encodedData = self._strictEncodeArguments('addOwner(address)', [owner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -739,11 +597,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             owner: string,
         ): string {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('addOwner(address)').inputs;
-            [owner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [owner
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('addOwner(address)').functions.addOwner.encode([owner
+            const abiEncodedTransactionData = self._strictEncodeArguments('addOwner(address)', [owner
     ]);
             return abiEncodedTransactionData;
         },
@@ -754,15 +608,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'addOwner(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [owner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [owner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [owner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.addOwner;
-            const encodedData = ethersFunction.encode([owner
+            const encodedData = self._strictEncodeArguments('addOwner(address)', [owner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -774,11 +620,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'addOwner'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('addOwner(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public isConfirmed = {
@@ -789,15 +636,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'isConfirmed(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [transactionId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [transactionId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.isConfirmed;
-            const encodedData = ethersFunction.encode([transactionId
+            const encodedData = self._strictEncodeArguments('isConfirmed(uint256)', [transactionId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -809,11 +648,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'isConfirmed'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('isConfirmed(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public changeTimeLock = {
@@ -822,13 +662,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('changeTimeLock(uint256)').inputs;
-            [_secondsTimeLocked
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_secondsTimeLocked
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_secondsTimeLocked
-    ]);
-            const encodedData = self._lookupEthersInterface('changeTimeLock(uint256)').functions.changeTimeLock.encode([_secondsTimeLocked
+            const encodedData = self._strictEncodeArguments('changeTimeLock(uint256)', [_secondsTimeLocked
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -850,11 +684,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('changeTimeLock(uint256)').inputs;
-            [_secondsTimeLocked
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_secondsTimeLocked
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('changeTimeLock(uint256)').functions.changeTimeLock.encode([_secondsTimeLocked
+            const encodedData = self._strictEncodeArguments('changeTimeLock(uint256)', [_secondsTimeLocked
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -871,11 +701,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             _secondsTimeLocked: BigNumber,
         ): string {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('changeTimeLock(uint256)').inputs;
-            [_secondsTimeLocked
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_secondsTimeLocked
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('changeTimeLock(uint256)').functions.changeTimeLock.encode([_secondsTimeLocked
+            const abiEncodedTransactionData = self._strictEncodeArguments('changeTimeLock(uint256)', [_secondsTimeLocked
     ]);
             return abiEncodedTransactionData;
         },
@@ -886,15 +712,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'changeTimeLock(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_secondsTimeLocked
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_secondsTimeLocked
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_secondsTimeLocked
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.changeTimeLock;
-            const encodedData = ethersFunction.encode([_secondsTimeLocked
+            const encodedData = self._strictEncodeArguments('changeTimeLock(uint256)', [_secondsTimeLocked
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -906,11 +724,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'changeTimeLock'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('changeTimeLock(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public isAssetProxyRegistered = {
@@ -921,15 +740,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'isAssetProxyRegistered(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.isAssetProxyRegistered;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('isAssetProxyRegistered(address)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -941,11 +752,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'isAssetProxyRegistered'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('isAssetProxyRegistered(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getConfirmationCount = {
@@ -956,15 +768,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'getConfirmationCount(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [transactionId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [transactionId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getConfirmationCount;
-            const encodedData = ethersFunction.encode([transactionId
+            const encodedData = self._strictEncodeArguments('getConfirmationCount(uint256)', [transactionId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -976,11 +780,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getConfirmationCount'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getConfirmationCount(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transactions = {
@@ -991,15 +796,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<[string, BigNumber, string, boolean]
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'transactions(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transactions;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('transactions(uint256)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1011,11 +808,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transactions'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('transactions(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<[string, BigNumber, string, boolean]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getOwners = {
@@ -1025,12 +823,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<string[]
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'getOwners()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getOwners;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('getOwners()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -1041,11 +834,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getOwners'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getOwners()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string[]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getTransactionIds = {
@@ -1059,24 +853,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<BigNumber[]
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'getTransactionIds(uint256,uint256,bool,bool)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [from,
-        to,
-        pending,
-        executed
-        ] = BaseContract._formatABIDataItemList(inputAbi, [from,
-        to,
-        pending,
-        executed
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [from,
-        to,
-        pending,
-        executed
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getTransactionIds;
-            const encodedData = ethersFunction.encode([from,
+            const encodedData = self._strictEncodeArguments('getTransactionIds(uint256,uint256,bool,bool)', [from,
         to,
         pending,
         executed
@@ -1091,11 +868,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getTransactionIds'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getTransactionIds(uint256,uint256,bool,bool)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber[]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getConfirmations = {
@@ -1106,15 +884,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<string[]
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'getConfirmations(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [transactionId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [transactionId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getConfirmations;
-            const encodedData = ethersFunction.encode([transactionId
+            const encodedData = self._strictEncodeArguments('getConfirmations(uint256)', [transactionId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1126,11 +896,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getConfirmations'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getConfirmations(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string[]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transactionCount = {
@@ -1140,12 +911,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'transactionCount()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transactionCount;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('transactionCount()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -1156,11 +922,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transactionCount'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('transactionCount()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public changeRequirement = {
@@ -1169,13 +936,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('changeRequirement(uint256)').inputs;
-            [_required
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_required
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_required
-    ]);
-            const encodedData = self._lookupEthersInterface('changeRequirement(uint256)').functions.changeRequirement.encode([_required
+            const encodedData = self._strictEncodeArguments('changeRequirement(uint256)', [_required
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1197,11 +958,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('changeRequirement(uint256)').inputs;
-            [_required
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_required
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('changeRequirement(uint256)').functions.changeRequirement.encode([_required
+            const encodedData = self._strictEncodeArguments('changeRequirement(uint256)', [_required
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1218,11 +975,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             _required: BigNumber,
         ): string {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('changeRequirement(uint256)').inputs;
-            [_required
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_required
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('changeRequirement(uint256)').functions.changeRequirement.encode([_required
+            const abiEncodedTransactionData = self._strictEncodeArguments('changeRequirement(uint256)', [_required
     ]);
             return abiEncodedTransactionData;
         },
@@ -1233,15 +986,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'changeRequirement(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_required
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_required
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_required
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.changeRequirement;
-            const encodedData = ethersFunction.encode([_required
+            const encodedData = self._strictEncodeArguments('changeRequirement(uint256)', [_required
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1253,11 +998,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'changeRequirement'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('changeRequirement(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public confirmTransaction = {
@@ -1266,13 +1012,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('confirmTransaction(uint256)').inputs;
-            [transactionId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [transactionId
-    ]);
-            const encodedData = self._lookupEthersInterface('confirmTransaction(uint256)').functions.confirmTransaction.encode([transactionId
+            const encodedData = self._strictEncodeArguments('confirmTransaction(uint256)', [transactionId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1294,11 +1034,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('confirmTransaction(uint256)').inputs;
-            [transactionId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('confirmTransaction(uint256)').functions.confirmTransaction.encode([transactionId
+            const encodedData = self._strictEncodeArguments('confirmTransaction(uint256)', [transactionId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1315,11 +1051,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             transactionId: BigNumber,
         ): string {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('confirmTransaction(uint256)').inputs;
-            [transactionId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('confirmTransaction(uint256)').functions.confirmTransaction.encode([transactionId
+            const abiEncodedTransactionData = self._strictEncodeArguments('confirmTransaction(uint256)', [transactionId
     ]);
             return abiEncodedTransactionData;
         },
@@ -1330,15 +1062,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'confirmTransaction(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [transactionId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [transactionId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.confirmTransaction;
-            const encodedData = ethersFunction.encode([transactionId
+            const encodedData = self._strictEncodeArguments('confirmTransaction(uint256)', [transactionId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1350,11 +1074,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'confirmTransaction'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('confirmTransaction(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public submitTransaction = {
@@ -1365,19 +1090,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('submitTransaction(address,uint256,bytes)').inputs;
-            [destination,
-    value,
-    data
-    ] = BaseContract._formatABIDataItemList(inputAbi, [destination,
-    value,
-    data
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [destination,
-    value,
-    data
-    ]);
-            const encodedData = self._lookupEthersInterface('submitTransaction(address,uint256,bytes)').functions.submitTransaction.encode([destination,
+            const encodedData = self._strictEncodeArguments('submitTransaction(address,uint256,bytes)', [destination,
     value,
     data
     ]);
@@ -1405,15 +1118,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('submitTransaction(address,uint256,bytes)').inputs;
-            [destination,
-    value,
-    data
-    ] = BaseContract._formatABIDataItemList(inputAbi, [destination,
-    value,
-    data
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('submitTransaction(address,uint256,bytes)').functions.submitTransaction.encode([destination,
+            const encodedData = self._strictEncodeArguments('submitTransaction(address,uint256,bytes)', [destination,
     value,
     data
     ]);
@@ -1434,15 +1139,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             data: string,
         ): string {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('submitTransaction(address,uint256,bytes)').inputs;
-            [destination,
-    value,
-    data
-    ] = BaseContract._formatABIDataItemList(inputAbi, [destination,
-    value,
-    data
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('submitTransaction(address,uint256,bytes)').functions.submitTransaction.encode([destination,
+            const abiEncodedTransactionData = self._strictEncodeArguments('submitTransaction(address,uint256,bytes)', [destination,
     value,
     data
     ]);
@@ -1457,21 +1154,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'submitTransaction(address,uint256,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [destination,
-        value,
-        data
-        ] = BaseContract._formatABIDataItemList(inputAbi, [destination,
-        value,
-        data
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [destination,
-        value,
-        data
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.submitTransaction;
-            const encodedData = ethersFunction.encode([destination,
+            const encodedData = self._strictEncodeArguments('submitTransaction(address,uint256,bytes)', [destination,
         value,
         data
         ]);
@@ -1485,11 +1168,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'submitTransaction'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('submitTransaction(address,uint256,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public confirmationTimes = {
@@ -1500,15 +1184,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'confirmationTimes(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.confirmationTimes;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('confirmationTimes(uint256)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1520,11 +1196,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'confirmationTimes'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('confirmationTimes(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public MAX_OWNER_COUNT = {
@@ -1534,12 +1211,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'MAX_OWNER_COUNT()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.MAX_OWNER_COUNT;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('MAX_OWNER_COUNT()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -1550,11 +1222,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'MAX_OWNER_COUNT'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('MAX_OWNER_COUNT()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public required = {
@@ -1564,12 +1237,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'required()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.required;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('required()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -1580,11 +1248,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'required'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('required()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public replaceOwner = {
@@ -1594,16 +1263,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('replaceOwner(address,address)').inputs;
-            [owner,
-    newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [owner,
-    newOwner
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [owner,
-    newOwner
-    ]);
-            const encodedData = self._lookupEthersInterface('replaceOwner(address,address)').functions.replaceOwner.encode([owner,
+            const encodedData = self._strictEncodeArguments('replaceOwner(address,address)', [owner,
     newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -1628,13 +1288,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('replaceOwner(address,address)').inputs;
-            [owner,
-    newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [owner,
-    newOwner
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('replaceOwner(address,address)').functions.replaceOwner.encode([owner,
+            const encodedData = self._strictEncodeArguments('replaceOwner(address,address)', [owner,
     newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -1653,13 +1307,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             newOwner: string,
         ): string {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('replaceOwner(address,address)').inputs;
-            [owner,
-    newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [owner,
-    newOwner
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('replaceOwner(address,address)').functions.replaceOwner.encode([owner,
+            const abiEncodedTransactionData = self._strictEncodeArguments('replaceOwner(address,address)', [owner,
     newOwner
     ]);
             return abiEncodedTransactionData;
@@ -1672,18 +1320,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'replaceOwner(address,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [owner,
-        newOwner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [owner,
-        newOwner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [owner,
-        newOwner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.replaceOwner;
-            const encodedData = ethersFunction.encode([owner,
+            const encodedData = self._strictEncodeArguments('replaceOwner(address,address)', [owner,
         newOwner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -1696,11 +1333,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'replaceOwner'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('replaceOwner(address,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public executeTransaction = {
@@ -1709,13 +1347,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('executeTransaction(uint256)').inputs;
-            [transactionId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [transactionId
-    ]);
-            const encodedData = self._lookupEthersInterface('executeTransaction(uint256)').functions.executeTransaction.encode([transactionId
+            const encodedData = self._strictEncodeArguments('executeTransaction(uint256)', [transactionId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1737,11 +1369,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('executeTransaction(uint256)').inputs;
-            [transactionId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('executeTransaction(uint256)').functions.executeTransaction.encode([transactionId
+            const encodedData = self._strictEncodeArguments('executeTransaction(uint256)', [transactionId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1758,11 +1386,7 @@ export class AssetProxyOwnerContract extends BaseContract {
             transactionId: BigNumber,
         ): string {
             const self = this as any as AssetProxyOwnerContract;
-            const inputAbi = self._lookupAbi('executeTransaction(uint256)').inputs;
-            [transactionId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('executeTransaction(uint256)').functions.executeTransaction.encode([transactionId
+            const abiEncodedTransactionData = self._strictEncodeArguments('executeTransaction(uint256)', [transactionId
     ]);
             return abiEncodedTransactionData;
         },
@@ -1773,15 +1397,7 @@ export class AssetProxyOwnerContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as AssetProxyOwnerContract;
-            const functionSignature = 'executeTransaction(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [transactionId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [transactionId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [transactionId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.executeTransaction;
-            const encodedData = ethersFunction.encode([transactionId
+            const encodedData = self._strictEncodeArguments('executeTransaction(uint256)', [transactionId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1793,11 +1409,12 @@ export class AssetProxyOwnerContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'executeTransaction'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('executeTransaction(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -1871,7 +1488,7 @@ _secondsTimeLocked
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('AssetProxyOwner', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/dummy_erc20_token.ts b/packages/abi-gen-wrappers/src/generated-wrappers/dummy_erc20_token.ts
index 3995c6d87..cab09c4d2 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/dummy_erc20_token.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/dummy_erc20_token.ts
@@ -43,12 +43,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'name()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.name;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('name()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -59,11 +54,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'name'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('name()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public approve = {
@@ -73,16 +69,7 @@ export class DummyERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_spender,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_spender,
-    _value
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_spender,
-    _value
-    ]);
-            const encodedData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_spender,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_spender,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -107,13 +94,7 @@ export class DummyERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_spender,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_spender,
-    _value
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_spender,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_spender,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -132,13 +113,7 @@ export class DummyERC20TokenContract extends BaseContract {
             _value: BigNumber,
         ): string {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_spender,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_spender,
-    _value
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_spender,
+            const abiEncodedTransactionData = self._strictEncodeArguments('approve(address,uint256)', [_spender,
     _value
     ]);
             return abiEncodedTransactionData;
@@ -151,18 +126,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'approve(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_spender,
-        _value
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_spender,
-        _value
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_spender,
-        _value
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.approve;
-            const encodedData = ethersFunction.encode([_spender,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_spender,
         _value
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -175,11 +139,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'approve'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('approve(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public totalSupply = {
@@ -189,12 +154,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'totalSupply()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.totalSupply;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('totalSupply()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -205,11 +165,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'totalSupply'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('totalSupply()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transferFrom = {
@@ -220,19 +181,7 @@ export class DummyERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _value
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-    _to,
-    _value
-    ]);
-            const encodedData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _value
     ]);
@@ -260,15 +209,7 @@ export class DummyERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _value
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _value
     ]);
@@ -289,15 +230,7 @@ export class DummyERC20TokenContract extends BaseContract {
             _value: BigNumber,
         ): string {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _value
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _value
     ]);
@@ -312,21 +245,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'transferFrom(address,address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_from,
-        _to,
-        _value
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-        _to,
-        _value
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-        _to,
-        _value
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transferFrom;
-            const encodedData = ethersFunction.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
         _to,
         _value
         ]);
@@ -340,11 +259,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transferFrom'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('transferFrom(address,address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public decimals = {
@@ -354,12 +274,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'decimals()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.decimals;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('decimals()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -370,11 +285,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'decimals'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('decimals()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public balanceOf = {
@@ -385,15 +301,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'balanceOf(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_owner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_owner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_owner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.balanceOf;
-            const encodedData = ethersFunction.encode([_owner
+            const encodedData = self._strictEncodeArguments('balanceOf(address)', [_owner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -405,11 +313,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'balanceOf'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('balanceOf(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public owner = {
@@ -419,12 +328,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'owner()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.owner;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('owner()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -435,11 +339,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'owner'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('owner()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public symbol = {
@@ -449,12 +354,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'symbol()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.symbol;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('symbol()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -465,11 +365,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'symbol'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('symbol()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public mint = {
@@ -478,13 +379,7 @@ export class DummyERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('mint(uint256)').inputs;
-            [_value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_value
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_value
-    ]);
-            const encodedData = self._lookupEthersInterface('mint(uint256)').functions.mint.encode([_value
+            const encodedData = self._strictEncodeArguments('mint(uint256)', [_value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -506,11 +401,7 @@ export class DummyERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('mint(uint256)').inputs;
-            [_value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_value
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('mint(uint256)').functions.mint.encode([_value
+            const encodedData = self._strictEncodeArguments('mint(uint256)', [_value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -527,11 +418,7 @@ export class DummyERC20TokenContract extends BaseContract {
             _value: BigNumber,
         ): string {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('mint(uint256)').inputs;
-            [_value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_value
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('mint(uint256)').functions.mint.encode([_value
+            const abiEncodedTransactionData = self._strictEncodeArguments('mint(uint256)', [_value
     ]);
             return abiEncodedTransactionData;
         },
@@ -542,15 +429,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'mint(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_value
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_value
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_value
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.mint;
-            const encodedData = ethersFunction.encode([_value
+            const encodedData = self._strictEncodeArguments('mint(uint256)', [_value
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -562,11 +441,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'mint'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('mint(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transfer = {
@@ -576,16 +456,7 @@ export class DummyERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('transfer(address,uint256)').inputs;
-            [_to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-    _value
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_to,
-    _value
-    ]);
-            const encodedData = self._lookupEthersInterface('transfer(address,uint256)').functions.transfer.encode([_to,
+            const encodedData = self._strictEncodeArguments('transfer(address,uint256)', [_to,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -610,13 +481,7 @@ export class DummyERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('transfer(address,uint256)').inputs;
-            [_to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-    _value
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transfer(address,uint256)').functions.transfer.encode([_to,
+            const encodedData = self._strictEncodeArguments('transfer(address,uint256)', [_to,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -635,13 +500,7 @@ export class DummyERC20TokenContract extends BaseContract {
             _value: BigNumber,
         ): string {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('transfer(address,uint256)').inputs;
-            [_to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-    _value
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transfer(address,uint256)').functions.transfer.encode([_to,
+            const abiEncodedTransactionData = self._strictEncodeArguments('transfer(address,uint256)', [_to,
     _value
     ]);
             return abiEncodedTransactionData;
@@ -654,18 +513,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'transfer(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_to,
-        _value
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-        _value
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_to,
-        _value
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transfer;
-            const encodedData = ethersFunction.encode([_to,
+            const encodedData = self._strictEncodeArguments('transfer(address,uint256)', [_to,
         _value
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -678,11 +526,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transfer'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('transfer(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public allowance = {
@@ -694,18 +543,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'allowance(address,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_owner,
-        _spender
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_owner,
-        _spender
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_owner,
-        _spender
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.allowance;
-            const encodedData = ethersFunction.encode([_owner,
+            const encodedData = self._strictEncodeArguments('allowance(address,address)', [_owner,
         _spender
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -718,11 +556,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'allowance'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('allowance(address,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public setBalance = {
@@ -732,16 +571,7 @@ export class DummyERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('setBalance(address,uint256)').inputs;
-            [_target,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_target,
-    _value
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_target,
-    _value
-    ]);
-            const encodedData = self._lookupEthersInterface('setBalance(address,uint256)').functions.setBalance.encode([_target,
+            const encodedData = self._strictEncodeArguments('setBalance(address,uint256)', [_target,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -766,13 +596,7 @@ export class DummyERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('setBalance(address,uint256)').inputs;
-            [_target,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_target,
-    _value
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('setBalance(address,uint256)').functions.setBalance.encode([_target,
+            const encodedData = self._strictEncodeArguments('setBalance(address,uint256)', [_target,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -791,13 +615,7 @@ export class DummyERC20TokenContract extends BaseContract {
             _value: BigNumber,
         ): string {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('setBalance(address,uint256)').inputs;
-            [_target,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_target,
-    _value
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('setBalance(address,uint256)').functions.setBalance.encode([_target,
+            const abiEncodedTransactionData = self._strictEncodeArguments('setBalance(address,uint256)', [_target,
     _value
     ]);
             return abiEncodedTransactionData;
@@ -810,18 +628,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'setBalance(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_target,
-        _value
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_target,
-        _value
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_target,
-        _value
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.setBalance;
-            const encodedData = ethersFunction.encode([_target,
+            const encodedData = self._strictEncodeArguments('setBalance(address,uint256)', [_target,
         _value
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -834,11 +641,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'setBalance'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('setBalance(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transferOwnership = {
@@ -847,13 +655,7 @@ export class DummyERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [newOwner
-    ]);
-            const encodedData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -875,11 +677,7 @@ export class DummyERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -896,11 +694,7 @@ export class DummyERC20TokenContract extends BaseContract {
             newOwner: string,
         ): string {
             const self = this as any as DummyERC20TokenContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             return abiEncodedTransactionData;
         },
@@ -911,15 +705,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'transferOwnership(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [newOwner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [newOwner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transferOwnership;
-            const encodedData = ethersFunction.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -931,11 +717,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transferOwnership'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('transferOwnership(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public MAX_MINT_AMOUNT = {
@@ -945,12 +732,7 @@ export class DummyERC20TokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as DummyERC20TokenContract;
-            const functionSignature = 'MAX_MINT_AMOUNT()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.MAX_MINT_AMOUNT;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('MAX_MINT_AMOUNT()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -961,11 +743,12 @@ export class DummyERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'MAX_MINT_AMOUNT'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('MAX_MINT_AMOUNT()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -1039,7 +822,7 @@ _totalSupply
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('DummyERC20Token', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/dummy_erc721_token.ts b/packages/abi-gen-wrappers/src/generated-wrappers/dummy_erc721_token.ts
index a7af2d158..9cb54442b 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/dummy_erc721_token.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/dummy_erc721_token.ts
@@ -51,12 +51,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'name()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.name;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('name()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -67,11 +62,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'name'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('name()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getApproved = {
@@ -82,15 +78,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'getApproved(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getApproved;
-            const encodedData = ethersFunction.encode([_tokenId
+            const encodedData = self._strictEncodeArguments('getApproved(uint256)', [_tokenId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -102,11 +90,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getApproved'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getApproved(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public approve = {
@@ -116,16 +105,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_approved,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_approved,
-    _tokenId
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_approved,
-    _tokenId
-    ]);
-            const encodedData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_approved,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_approved,
     _tokenId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -150,13 +130,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_approved,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_approved,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_approved,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_approved,
     _tokenId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -175,13 +149,7 @@ export class DummyERC721TokenContract extends BaseContract {
             _tokenId: BigNumber,
         ): string {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_approved,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_approved,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_approved,
+            const abiEncodedTransactionData = self._strictEncodeArguments('approve(address,uint256)', [_approved,
     _tokenId
     ]);
             return abiEncodedTransactionData;
@@ -194,18 +162,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'approve(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_approved,
-        _tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_approved,
-        _tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_approved,
-        _tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.approve;
-            const encodedData = ethersFunction.encode([_approved,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_approved,
         _tokenId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -218,11 +175,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'approve'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('approve(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transferFrom = {
@@ -233,19 +191,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-    _to,
-    _tokenId
-    ]);
-            const encodedData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _tokenId
     ]);
@@ -273,15 +219,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _tokenId
     ]);
@@ -302,15 +240,7 @@ export class DummyERC721TokenContract extends BaseContract {
             _tokenId: BigNumber,
         ): string {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _tokenId
     ]);
@@ -325,21 +255,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'transferFrom(address,address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_from,
-        _to,
-        _tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-        _to,
-        _tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-        _to,
-        _tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transferFrom;
-            const encodedData = ethersFunction.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
         _to,
         _tokenId
         ]);
@@ -353,11 +269,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transferFrom'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('transferFrom(address,address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public mint = {
@@ -367,16 +284,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('mint(address,uint256)').inputs;
-            [_to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-    _tokenId
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_to,
-    _tokenId
-    ]);
-            const encodedData = self._lookupEthersInterface('mint(address,uint256)').functions.mint.encode([_to,
+            const encodedData = self._strictEncodeArguments('mint(address,uint256)', [_to,
     _tokenId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -401,13 +309,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('mint(address,uint256)').inputs;
-            [_to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('mint(address,uint256)').functions.mint.encode([_to,
+            const encodedData = self._strictEncodeArguments('mint(address,uint256)', [_to,
     _tokenId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -426,13 +328,7 @@ export class DummyERC721TokenContract extends BaseContract {
             _tokenId: BigNumber,
         ): string {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('mint(address,uint256)').inputs;
-            [_to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('mint(address,uint256)').functions.mint.encode([_to,
+            const abiEncodedTransactionData = self._strictEncodeArguments('mint(address,uint256)', [_to,
     _tokenId
     ]);
             return abiEncodedTransactionData;
@@ -445,18 +341,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'mint(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_to,
-        _tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-        _tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_to,
-        _tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.mint;
-            const encodedData = ethersFunction.encode([_to,
+            const encodedData = self._strictEncodeArguments('mint(address,uint256)', [_to,
         _tokenId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -469,11 +354,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'mint'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('mint(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public safeTransferFrom1 = {
@@ -484,19 +370,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('safeTransferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-    _to,
-    _tokenId
-    ]);
-            const encodedData = self._lookupEthersInterface('safeTransferFrom(address,address,uint256)').functions.safeTransferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256)', [_from,
     _to,
     _tokenId
     ]);
@@ -524,15 +398,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('safeTransferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('safeTransferFrom(address,address,uint256)').functions.safeTransferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256)', [_from,
     _to,
     _tokenId
     ]);
@@ -553,15 +419,7 @@ export class DummyERC721TokenContract extends BaseContract {
             _tokenId: BigNumber,
         ): string {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('safeTransferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('safeTransferFrom(address,address,uint256)').functions.safeTransferFrom.encode([_from,
+            const abiEncodedTransactionData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256)', [_from,
     _to,
     _tokenId
     ]);
@@ -576,21 +434,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'safeTransferFrom(address,address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_from,
-        _to,
-        _tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-        _to,
-        _tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-        _to,
-        _tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.safeTransferFrom;
-            const encodedData = ethersFunction.encode([_from,
+            const encodedData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256)', [_from,
         _to,
         _tokenId
         ]);
@@ -604,11 +448,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'safeTransferFrom'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('safeTransferFrom(address,address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public ownerOf = {
@@ -619,15 +464,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'ownerOf(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.ownerOf;
-            const encodedData = ethersFunction.encode([_tokenId
+            const encodedData = self._strictEncodeArguments('ownerOf(uint256)', [_tokenId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -639,11 +476,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'ownerOf'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('ownerOf(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public balanceOf = {
@@ -654,15 +492,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'balanceOf(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_owner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_owner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_owner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.balanceOf;
-            const encodedData = ethersFunction.encode([_owner
+            const encodedData = self._strictEncodeArguments('balanceOf(address)', [_owner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -674,11 +504,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'balanceOf'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('balanceOf(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public owner = {
@@ -688,12 +519,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'owner()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.owner;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('owner()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -704,11 +530,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'owner'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('owner()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public symbol = {
@@ -718,12 +545,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'symbol()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.symbol;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('symbol()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -734,11 +556,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'symbol'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('symbol()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public burn = {
@@ -748,16 +571,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('burn(address,uint256)').inputs;
-            [_owner,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_owner,
-    _tokenId
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_owner,
-    _tokenId
-    ]);
-            const encodedData = self._lookupEthersInterface('burn(address,uint256)').functions.burn.encode([_owner,
+            const encodedData = self._strictEncodeArguments('burn(address,uint256)', [_owner,
     _tokenId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -782,13 +596,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('burn(address,uint256)').inputs;
-            [_owner,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_owner,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('burn(address,uint256)').functions.burn.encode([_owner,
+            const encodedData = self._strictEncodeArguments('burn(address,uint256)', [_owner,
     _tokenId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -807,13 +615,7 @@ export class DummyERC721TokenContract extends BaseContract {
             _tokenId: BigNumber,
         ): string {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('burn(address,uint256)').inputs;
-            [_owner,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_owner,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('burn(address,uint256)').functions.burn.encode([_owner,
+            const abiEncodedTransactionData = self._strictEncodeArguments('burn(address,uint256)', [_owner,
     _tokenId
     ]);
             return abiEncodedTransactionData;
@@ -826,18 +628,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'burn(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_owner,
-        _tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_owner,
-        _tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_owner,
-        _tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.burn;
-            const encodedData = ethersFunction.encode([_owner,
+            const encodedData = self._strictEncodeArguments('burn(address,uint256)', [_owner,
         _tokenId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -850,11 +641,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'burn'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('burn(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public setApprovalForAll = {
@@ -864,16 +656,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('setApprovalForAll(address,bool)').inputs;
-            [_operator,
-    _approved
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_operator,
-    _approved
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_operator,
-    _approved
-    ]);
-            const encodedData = self._lookupEthersInterface('setApprovalForAll(address,bool)').functions.setApprovalForAll.encode([_operator,
+            const encodedData = self._strictEncodeArguments('setApprovalForAll(address,bool)', [_operator,
     _approved
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -898,13 +681,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('setApprovalForAll(address,bool)').inputs;
-            [_operator,
-    _approved
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_operator,
-    _approved
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('setApprovalForAll(address,bool)').functions.setApprovalForAll.encode([_operator,
+            const encodedData = self._strictEncodeArguments('setApprovalForAll(address,bool)', [_operator,
     _approved
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -923,13 +700,7 @@ export class DummyERC721TokenContract extends BaseContract {
             _approved: boolean,
         ): string {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('setApprovalForAll(address,bool)').inputs;
-            [_operator,
-    _approved
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_operator,
-    _approved
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('setApprovalForAll(address,bool)').functions.setApprovalForAll.encode([_operator,
+            const abiEncodedTransactionData = self._strictEncodeArguments('setApprovalForAll(address,bool)', [_operator,
     _approved
     ]);
             return abiEncodedTransactionData;
@@ -942,18 +713,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'setApprovalForAll(address,bool)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_operator,
-        _approved
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_operator,
-        _approved
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_operator,
-        _approved
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.setApprovalForAll;
-            const encodedData = ethersFunction.encode([_operator,
+            const encodedData = self._strictEncodeArguments('setApprovalForAll(address,bool)', [_operator,
         _approved
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -966,11 +726,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'setApprovalForAll'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('setApprovalForAll(address,bool)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public safeTransferFrom2 = {
@@ -982,22 +743,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('safeTransferFrom(address,address,uint256,bytes)').inputs;
-            [_from,
-    _to,
-    _tokenId,
-    _data
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId,
-    _data
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-    _to,
-    _tokenId,
-    _data
-    ]);
-            const encodedData = self._lookupEthersInterface('safeTransferFrom(address,address,uint256,bytes)').functions.safeTransferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256,bytes)', [_from,
     _to,
     _tokenId,
     _data
@@ -1028,17 +774,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('safeTransferFrom(address,address,uint256,bytes)').inputs;
-            [_from,
-    _to,
-    _tokenId,
-    _data
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId,
-    _data
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('safeTransferFrom(address,address,uint256,bytes)').functions.safeTransferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256,bytes)', [_from,
     _to,
     _tokenId,
     _data
@@ -1061,17 +797,7 @@ export class DummyERC721TokenContract extends BaseContract {
             _data: string,
         ): string {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('safeTransferFrom(address,address,uint256,bytes)').inputs;
-            [_from,
-    _to,
-    _tokenId,
-    _data
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId,
-    _data
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('safeTransferFrom(address,address,uint256,bytes)').functions.safeTransferFrom.encode([_from,
+            const abiEncodedTransactionData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256,bytes)', [_from,
     _to,
     _tokenId,
     _data
@@ -1088,24 +814,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'safeTransferFrom(address,address,uint256,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_from,
-        _to,
-        _tokenId,
-        _data
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-        _to,
-        _tokenId,
-        _data
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-        _to,
-        _tokenId,
-        _data
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.safeTransferFrom;
-            const encodedData = ethersFunction.encode([_from,
+            const encodedData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256,bytes)', [_from,
         _to,
         _tokenId,
         _data
@@ -1120,11 +829,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'safeTransferFrom'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('safeTransferFrom(address,address,uint256,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public isApprovedForAll = {
@@ -1136,18 +846,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'isApprovedForAll(address,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_owner,
-        _operator
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_owner,
-        _operator
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_owner,
-        _operator
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.isApprovedForAll;
-            const encodedData = ethersFunction.encode([_owner,
+            const encodedData = self._strictEncodeArguments('isApprovedForAll(address,address)', [_owner,
         _operator
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -1160,11 +859,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'isApprovedForAll'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('isApprovedForAll(address,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transferOwnership = {
@@ -1173,13 +873,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [newOwner
-    ]);
-            const encodedData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1201,11 +895,7 @@ export class DummyERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1222,11 +912,7 @@ export class DummyERC721TokenContract extends BaseContract {
             newOwner: string,
         ): string {
             const self = this as any as DummyERC721TokenContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             return abiEncodedTransactionData;
         },
@@ -1237,15 +923,7 @@ export class DummyERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as DummyERC721TokenContract;
-            const functionSignature = 'transferOwnership(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [newOwner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [newOwner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transferOwnership;
-            const encodedData = ethersFunction.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1257,11 +935,12 @@ export class DummyERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transferOwnership'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('transferOwnership(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -1321,7 +1000,7 @@ _symbol
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('DummyERC721Token', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/dutch_auction.ts b/packages/abi-gen-wrappers/src/generated-wrappers/dutch_auction.ts
index 90e233756..9be95af65 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/dutch_auction.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/dutch_auction.ts
@@ -21,13 +21,7 @@ export class DutchAuctionContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DutchAuctionContract;
-            const inputAbi = self._lookupAbi('getAuctionDetails({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})').inputs;
-            [order
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order
-    ]);
-            const encodedData = self._lookupEthersInterface('getAuctionDetails({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})').functions.getAuctionDetails.encode([order
+            const encodedData = self._strictEncodeArguments('getAuctionDetails((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))', [order
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -49,11 +43,7 @@ export class DutchAuctionContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DutchAuctionContract;
-            const inputAbi = self._lookupAbi('getAuctionDetails({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})').inputs;
-            [order
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('getAuctionDetails({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})').functions.getAuctionDetails.encode([order
+            const encodedData = self._strictEncodeArguments('getAuctionDetails((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))', [order
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -70,11 +60,7 @@ export class DutchAuctionContract extends BaseContract {
             order: {makerAddress: string;takerAddress: string;feeRecipientAddress: string;senderAddress: string;makerAssetAmount: BigNumber;takerAssetAmount: BigNumber;makerFee: BigNumber;takerFee: BigNumber;expirationTimeSeconds: BigNumber;salt: BigNumber;makerAssetData: string;takerAssetData: string},
         ): string {
             const self = this as any as DutchAuctionContract;
-            const inputAbi = self._lookupAbi('getAuctionDetails({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})').inputs;
-            [order
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('getAuctionDetails({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})').functions.getAuctionDetails.encode([order
+            const abiEncodedTransactionData = self._strictEncodeArguments('getAuctionDetails((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))', [order
     ]);
             return abiEncodedTransactionData;
         },
@@ -85,15 +71,7 @@ export class DutchAuctionContract extends BaseContract {
         ): Promise<{beginTimeSeconds: BigNumber;endTimeSeconds: BigNumber;beginAmount: BigNumber;endAmount: BigNumber;currentAmount: BigNumber;currentTimeSeconds: BigNumber}
         > {
             const self = this as any as DutchAuctionContract;
-            const functionSignature = 'getAuctionDetails({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [order
-        ] = BaseContract._formatABIDataItemList(inputAbi, [order
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getAuctionDetails;
-            const encodedData = ethersFunction.encode([order
+            const encodedData = self._strictEncodeArguments('getAuctionDetails((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))', [order
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -105,11 +83,12 @@ export class DutchAuctionContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getAuctionDetails'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getAuctionDetails((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{beginTimeSeconds: BigNumber;endTimeSeconds: BigNumber;beginAmount: BigNumber;endAmount: BigNumber;currentAmount: BigNumber;currentTimeSeconds: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public matchOrders = {
@@ -121,22 +100,7 @@ export class DutchAuctionContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as DutchAuctionContract;
-            const inputAbi = self._lookupAbi('matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)').inputs;
-            [buyOrder,
-    sellOrder,
-    buySignature,
-    sellSignature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [buyOrder,
-    sellOrder,
-    buySignature,
-    sellSignature
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [buyOrder,
-    sellOrder,
-    buySignature,
-    sellSignature
-    ]);
-            const encodedData = self._lookupEthersInterface('matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)').functions.matchOrders.encode([buyOrder,
+            const encodedData = self._strictEncodeArguments('matchOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),bytes,bytes)', [buyOrder,
     sellOrder,
     buySignature,
     sellSignature
@@ -167,17 +131,7 @@ export class DutchAuctionContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as DutchAuctionContract;
-            const inputAbi = self._lookupAbi('matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)').inputs;
-            [buyOrder,
-    sellOrder,
-    buySignature,
-    sellSignature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [buyOrder,
-    sellOrder,
-    buySignature,
-    sellSignature
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)').functions.matchOrders.encode([buyOrder,
+            const encodedData = self._strictEncodeArguments('matchOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),bytes,bytes)', [buyOrder,
     sellOrder,
     buySignature,
     sellSignature
@@ -200,17 +154,7 @@ export class DutchAuctionContract extends BaseContract {
             sellSignature: string,
         ): string {
             const self = this as any as DutchAuctionContract;
-            const inputAbi = self._lookupAbi('matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)').inputs;
-            [buyOrder,
-    sellOrder,
-    buySignature,
-    sellSignature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [buyOrder,
-    sellOrder,
-    buySignature,
-    sellSignature
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)').functions.matchOrders.encode([buyOrder,
+            const abiEncodedTransactionData = self._strictEncodeArguments('matchOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),bytes,bytes)', [buyOrder,
     sellOrder,
     buySignature,
     sellSignature
@@ -227,24 +171,7 @@ export class DutchAuctionContract extends BaseContract {
         ): Promise<{left: {makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber};right: {makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber};leftMakerAssetSpreadAmount: BigNumber}
         > {
             const self = this as any as DutchAuctionContract;
-            const functionSignature = 'matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [buyOrder,
-        sellOrder,
-        buySignature,
-        sellSignature
-        ] = BaseContract._formatABIDataItemList(inputAbi, [buyOrder,
-        sellOrder,
-        buySignature,
-        sellSignature
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [buyOrder,
-        sellOrder,
-        buySignature,
-        sellSignature
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.matchOrders;
-            const encodedData = ethersFunction.encode([buyOrder,
+            const encodedData = self._strictEncodeArguments('matchOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),bytes,bytes)', [buyOrder,
         sellOrder,
         buySignature,
         sellSignature
@@ -259,11 +186,12 @@ export class DutchAuctionContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'matchOrders'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('matchOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),bytes,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{left: {makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber};right: {makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber};leftMakerAssetSpreadAmount: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -316,7 +244,7 @@ export class DutchAuctionContract extends BaseContract {
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('DutchAuction', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/erc20_proxy.ts b/packages/abi-gen-wrappers/src/generated-wrappers/erc20_proxy.ts
index 474472e43..1d53df6b8 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/erc20_proxy.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/erc20_proxy.ts
@@ -40,13 +40,7 @@ export class ERC20ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC20ProxyContract;
-            const inputAbi = self._lookupAbi('addAuthorizedAddress(address)').inputs;
-            [target
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target
-    ]);
-            const encodedData = self._lookupEthersInterface('addAuthorizedAddress(address)').functions.addAuthorizedAddress.encode([target
+            const encodedData = self._strictEncodeArguments('addAuthorizedAddress(address)', [target
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -68,11 +62,7 @@ export class ERC20ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC20ProxyContract;
-            const inputAbi = self._lookupAbi('addAuthorizedAddress(address)').inputs;
-            [target
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('addAuthorizedAddress(address)').functions.addAuthorizedAddress.encode([target
+            const encodedData = self._strictEncodeArguments('addAuthorizedAddress(address)', [target
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -89,11 +79,7 @@ export class ERC20ProxyContract extends BaseContract {
             target: string,
         ): string {
             const self = this as any as ERC20ProxyContract;
-            const inputAbi = self._lookupAbi('addAuthorizedAddress(address)').inputs;
-            [target
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('addAuthorizedAddress(address)').functions.addAuthorizedAddress.encode([target
+            const abiEncodedTransactionData = self._strictEncodeArguments('addAuthorizedAddress(address)', [target
     ]);
             return abiEncodedTransactionData;
         },
@@ -104,15 +90,7 @@ export class ERC20ProxyContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC20ProxyContract;
-            const functionSignature = 'addAuthorizedAddress(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [target
-        ] = BaseContract._formatABIDataItemList(inputAbi, [target
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.addAuthorizedAddress;
-            const encodedData = ethersFunction.encode([target
+            const encodedData = self._strictEncodeArguments('addAuthorizedAddress(address)', [target
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -124,11 +102,12 @@ export class ERC20ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'addAuthorizedAddress'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('addAuthorizedAddress(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public authorities = {
@@ -139,15 +118,7 @@ export class ERC20ProxyContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ERC20ProxyContract;
-            const functionSignature = 'authorities(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.authorities;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('authorities(uint256)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -159,11 +130,12 @@ export class ERC20ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'authorities'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('authorities(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public removeAuthorizedAddress = {
@@ -172,13 +144,7 @@ export class ERC20ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC20ProxyContract;
-            const inputAbi = self._lookupAbi('removeAuthorizedAddress(address)').inputs;
-            [target
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target
-    ]);
-            const encodedData = self._lookupEthersInterface('removeAuthorizedAddress(address)').functions.removeAuthorizedAddress.encode([target
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddress(address)', [target
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -200,11 +166,7 @@ export class ERC20ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC20ProxyContract;
-            const inputAbi = self._lookupAbi('removeAuthorizedAddress(address)').inputs;
-            [target
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('removeAuthorizedAddress(address)').functions.removeAuthorizedAddress.encode([target
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddress(address)', [target
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -221,11 +183,7 @@ export class ERC20ProxyContract extends BaseContract {
             target: string,
         ): string {
             const self = this as any as ERC20ProxyContract;
-            const inputAbi = self._lookupAbi('removeAuthorizedAddress(address)').inputs;
-            [target
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('removeAuthorizedAddress(address)').functions.removeAuthorizedAddress.encode([target
+            const abiEncodedTransactionData = self._strictEncodeArguments('removeAuthorizedAddress(address)', [target
     ]);
             return abiEncodedTransactionData;
         },
@@ -236,15 +194,7 @@ export class ERC20ProxyContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC20ProxyContract;
-            const functionSignature = 'removeAuthorizedAddress(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [target
-        ] = BaseContract._formatABIDataItemList(inputAbi, [target
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.removeAuthorizedAddress;
-            const encodedData = ethersFunction.encode([target
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddress(address)', [target
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -256,11 +206,12 @@ export class ERC20ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'removeAuthorizedAddress'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('removeAuthorizedAddress(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public owner = {
@@ -270,12 +221,7 @@ export class ERC20ProxyContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ERC20ProxyContract;
-            const functionSignature = 'owner()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.owner;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('owner()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -286,11 +232,12 @@ export class ERC20ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'owner'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('owner()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public removeAuthorizedAddressAtIndex = {
@@ -300,16 +247,7 @@ export class ERC20ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC20ProxyContract;
-            const inputAbi = self._lookupAbi('removeAuthorizedAddressAtIndex(address,uint256)').inputs;
-            [target,
-    index
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target,
-    index
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target,
-    index
-    ]);
-            const encodedData = self._lookupEthersInterface('removeAuthorizedAddressAtIndex(address,uint256)').functions.removeAuthorizedAddressAtIndex.encode([target,
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddressAtIndex(address,uint256)', [target,
     index
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -334,13 +272,7 @@ export class ERC20ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC20ProxyContract;
-            const inputAbi = self._lookupAbi('removeAuthorizedAddressAtIndex(address,uint256)').inputs;
-            [target,
-    index
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target,
-    index
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('removeAuthorizedAddressAtIndex(address,uint256)').functions.removeAuthorizedAddressAtIndex.encode([target,
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddressAtIndex(address,uint256)', [target,
     index
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -359,13 +291,7 @@ export class ERC20ProxyContract extends BaseContract {
             index: BigNumber,
         ): string {
             const self = this as any as ERC20ProxyContract;
-            const inputAbi = self._lookupAbi('removeAuthorizedAddressAtIndex(address,uint256)').inputs;
-            [target,
-    index
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target,
-    index
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('removeAuthorizedAddressAtIndex(address,uint256)').functions.removeAuthorizedAddressAtIndex.encode([target,
+            const abiEncodedTransactionData = self._strictEncodeArguments('removeAuthorizedAddressAtIndex(address,uint256)', [target,
     index
     ]);
             return abiEncodedTransactionData;
@@ -378,18 +304,7 @@ export class ERC20ProxyContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC20ProxyContract;
-            const functionSignature = 'removeAuthorizedAddressAtIndex(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [target,
-        index
-        ] = BaseContract._formatABIDataItemList(inputAbi, [target,
-        index
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target,
-        index
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.removeAuthorizedAddressAtIndex;
-            const encodedData = ethersFunction.encode([target,
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddressAtIndex(address,uint256)', [target,
         index
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -402,11 +317,12 @@ export class ERC20ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'removeAuthorizedAddressAtIndex'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('removeAuthorizedAddressAtIndex(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getProxyId = {
@@ -416,12 +332,7 @@ export class ERC20ProxyContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ERC20ProxyContract;
-            const functionSignature = 'getProxyId()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getProxyId;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('getProxyId()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -432,11 +343,12 @@ export class ERC20ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getProxyId'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getProxyId()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public authorized = {
@@ -447,15 +359,7 @@ export class ERC20ProxyContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ERC20ProxyContract;
-            const functionSignature = 'authorized(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.authorized;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('authorized(address)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -467,11 +371,12 @@ export class ERC20ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'authorized'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('authorized(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getAuthorizedAddresses = {
@@ -481,12 +386,7 @@ export class ERC20ProxyContract extends BaseContract {
         ): Promise<string[]
         > {
             const self = this as any as ERC20ProxyContract;
-            const functionSignature = 'getAuthorizedAddresses()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getAuthorizedAddresses;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('getAuthorizedAddresses()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -497,11 +397,12 @@ export class ERC20ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getAuthorizedAddresses'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getAuthorizedAddresses()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string[]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transferOwnership = {
@@ -510,13 +411,7 @@ export class ERC20ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC20ProxyContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [newOwner
-    ]);
-            const encodedData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -538,11 +433,7 @@ export class ERC20ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC20ProxyContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -559,11 +450,7 @@ export class ERC20ProxyContract extends BaseContract {
             newOwner: string,
         ): string {
             const self = this as any as ERC20ProxyContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             return abiEncodedTransactionData;
         },
@@ -574,15 +461,7 @@ export class ERC20ProxyContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC20ProxyContract;
-            const functionSignature = 'transferOwnership(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [newOwner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [newOwner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transferOwnership;
-            const encodedData = ethersFunction.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -594,11 +473,12 @@ export class ERC20ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transferOwnership'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('transferOwnership(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -644,7 +524,7 @@ export class ERC20ProxyContract extends BaseContract {
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('ERC20Proxy', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/erc20_token.ts b/packages/abi-gen-wrappers/src/generated-wrappers/erc20_token.ts
index ab208cbf5..5070111e1 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/erc20_token.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/erc20_token.ts
@@ -43,16 +43,7 @@ export class ERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC20TokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_spender,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_spender,
-    _value
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_spender,
-    _value
-    ]);
-            const encodedData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_spender,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_spender,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -77,13 +68,7 @@ export class ERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC20TokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_spender,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_spender,
-    _value
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_spender,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_spender,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -102,13 +87,7 @@ export class ERC20TokenContract extends BaseContract {
             _value: BigNumber,
         ): string {
             const self = this as any as ERC20TokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_spender,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_spender,
-    _value
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_spender,
+            const abiEncodedTransactionData = self._strictEncodeArguments('approve(address,uint256)', [_spender,
     _value
     ]);
             return abiEncodedTransactionData;
@@ -121,18 +100,7 @@ export class ERC20TokenContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ERC20TokenContract;
-            const functionSignature = 'approve(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_spender,
-        _value
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_spender,
-        _value
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_spender,
-        _value
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.approve;
-            const encodedData = ethersFunction.encode([_spender,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_spender,
         _value
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -145,11 +113,12 @@ export class ERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'approve'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('approve(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public totalSupply = {
@@ -159,12 +128,7 @@ export class ERC20TokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as ERC20TokenContract;
-            const functionSignature = 'totalSupply()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.totalSupply;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('totalSupply()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -175,11 +139,12 @@ export class ERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'totalSupply'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('totalSupply()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transferFrom = {
@@ -190,19 +155,7 @@ export class ERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC20TokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _value
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-    _to,
-    _value
-    ]);
-            const encodedData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _value
     ]);
@@ -230,15 +183,7 @@ export class ERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC20TokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _value
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _value
     ]);
@@ -259,15 +204,7 @@ export class ERC20TokenContract extends BaseContract {
             _value: BigNumber,
         ): string {
             const self = this as any as ERC20TokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _value
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _value
     ]);
@@ -282,21 +219,7 @@ export class ERC20TokenContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ERC20TokenContract;
-            const functionSignature = 'transferFrom(address,address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_from,
-        _to,
-        _value
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-        _to,
-        _value
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-        _to,
-        _value
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transferFrom;
-            const encodedData = ethersFunction.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
         _to,
         _value
         ]);
@@ -310,11 +233,12 @@ export class ERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transferFrom'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('transferFrom(address,address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public balanceOf = {
@@ -325,15 +249,7 @@ export class ERC20TokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as ERC20TokenContract;
-            const functionSignature = 'balanceOf(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_owner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_owner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_owner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.balanceOf;
-            const encodedData = ethersFunction.encode([_owner
+            const encodedData = self._strictEncodeArguments('balanceOf(address)', [_owner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -345,11 +261,12 @@ export class ERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'balanceOf'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('balanceOf(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transfer = {
@@ -359,16 +276,7 @@ export class ERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC20TokenContract;
-            const inputAbi = self._lookupAbi('transfer(address,uint256)').inputs;
-            [_to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-    _value
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_to,
-    _value
-    ]);
-            const encodedData = self._lookupEthersInterface('transfer(address,uint256)').functions.transfer.encode([_to,
+            const encodedData = self._strictEncodeArguments('transfer(address,uint256)', [_to,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -393,13 +301,7 @@ export class ERC20TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC20TokenContract;
-            const inputAbi = self._lookupAbi('transfer(address,uint256)').inputs;
-            [_to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-    _value
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transfer(address,uint256)').functions.transfer.encode([_to,
+            const encodedData = self._strictEncodeArguments('transfer(address,uint256)', [_to,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -418,13 +320,7 @@ export class ERC20TokenContract extends BaseContract {
             _value: BigNumber,
         ): string {
             const self = this as any as ERC20TokenContract;
-            const inputAbi = self._lookupAbi('transfer(address,uint256)').inputs;
-            [_to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-    _value
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transfer(address,uint256)').functions.transfer.encode([_to,
+            const abiEncodedTransactionData = self._strictEncodeArguments('transfer(address,uint256)', [_to,
     _value
     ]);
             return abiEncodedTransactionData;
@@ -437,18 +333,7 @@ export class ERC20TokenContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ERC20TokenContract;
-            const functionSignature = 'transfer(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_to,
-        _value
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-        _value
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_to,
-        _value
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transfer;
-            const encodedData = ethersFunction.encode([_to,
+            const encodedData = self._strictEncodeArguments('transfer(address,uint256)', [_to,
         _value
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -461,11 +346,12 @@ export class ERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transfer'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('transfer(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public allowance = {
@@ -477,18 +363,7 @@ export class ERC20TokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as ERC20TokenContract;
-            const functionSignature = 'allowance(address,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_owner,
-        _spender
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_owner,
-        _spender
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_owner,
-        _spender
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.allowance;
-            const encodedData = ethersFunction.encode([_owner,
+            const encodedData = self._strictEncodeArguments('allowance(address,address)', [_owner,
         _spender
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -501,11 +376,12 @@ export class ERC20TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'allowance'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('allowance(address,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -551,7 +427,7 @@ export class ERC20TokenContract extends BaseContract {
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('ERC20Token', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/erc721_proxy.ts b/packages/abi-gen-wrappers/src/generated-wrappers/erc721_proxy.ts
index f9730a072..5a9fcc7d1 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/erc721_proxy.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/erc721_proxy.ts
@@ -40,13 +40,7 @@ export class ERC721ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC721ProxyContract;
-            const inputAbi = self._lookupAbi('addAuthorizedAddress(address)').inputs;
-            [target
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target
-    ]);
-            const encodedData = self._lookupEthersInterface('addAuthorizedAddress(address)').functions.addAuthorizedAddress.encode([target
+            const encodedData = self._strictEncodeArguments('addAuthorizedAddress(address)', [target
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -68,11 +62,7 @@ export class ERC721ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC721ProxyContract;
-            const inputAbi = self._lookupAbi('addAuthorizedAddress(address)').inputs;
-            [target
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('addAuthorizedAddress(address)').functions.addAuthorizedAddress.encode([target
+            const encodedData = self._strictEncodeArguments('addAuthorizedAddress(address)', [target
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -89,11 +79,7 @@ export class ERC721ProxyContract extends BaseContract {
             target: string,
         ): string {
             const self = this as any as ERC721ProxyContract;
-            const inputAbi = self._lookupAbi('addAuthorizedAddress(address)').inputs;
-            [target
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('addAuthorizedAddress(address)').functions.addAuthorizedAddress.encode([target
+            const abiEncodedTransactionData = self._strictEncodeArguments('addAuthorizedAddress(address)', [target
     ]);
             return abiEncodedTransactionData;
         },
@@ -104,15 +90,7 @@ export class ERC721ProxyContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC721ProxyContract;
-            const functionSignature = 'addAuthorizedAddress(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [target
-        ] = BaseContract._formatABIDataItemList(inputAbi, [target
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.addAuthorizedAddress;
-            const encodedData = ethersFunction.encode([target
+            const encodedData = self._strictEncodeArguments('addAuthorizedAddress(address)', [target
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -124,11 +102,12 @@ export class ERC721ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'addAuthorizedAddress'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('addAuthorizedAddress(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public authorities = {
@@ -139,15 +118,7 @@ export class ERC721ProxyContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ERC721ProxyContract;
-            const functionSignature = 'authorities(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.authorities;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('authorities(uint256)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -159,11 +130,12 @@ export class ERC721ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'authorities'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('authorities(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public removeAuthorizedAddress = {
@@ -172,13 +144,7 @@ export class ERC721ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC721ProxyContract;
-            const inputAbi = self._lookupAbi('removeAuthorizedAddress(address)').inputs;
-            [target
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target
-    ]);
-            const encodedData = self._lookupEthersInterface('removeAuthorizedAddress(address)').functions.removeAuthorizedAddress.encode([target
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddress(address)', [target
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -200,11 +166,7 @@ export class ERC721ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC721ProxyContract;
-            const inputAbi = self._lookupAbi('removeAuthorizedAddress(address)').inputs;
-            [target
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('removeAuthorizedAddress(address)').functions.removeAuthorizedAddress.encode([target
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddress(address)', [target
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -221,11 +183,7 @@ export class ERC721ProxyContract extends BaseContract {
             target: string,
         ): string {
             const self = this as any as ERC721ProxyContract;
-            const inputAbi = self._lookupAbi('removeAuthorizedAddress(address)').inputs;
-            [target
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('removeAuthorizedAddress(address)').functions.removeAuthorizedAddress.encode([target
+            const abiEncodedTransactionData = self._strictEncodeArguments('removeAuthorizedAddress(address)', [target
     ]);
             return abiEncodedTransactionData;
         },
@@ -236,15 +194,7 @@ export class ERC721ProxyContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC721ProxyContract;
-            const functionSignature = 'removeAuthorizedAddress(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [target
-        ] = BaseContract._formatABIDataItemList(inputAbi, [target
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.removeAuthorizedAddress;
-            const encodedData = ethersFunction.encode([target
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddress(address)', [target
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -256,11 +206,12 @@ export class ERC721ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'removeAuthorizedAddress'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('removeAuthorizedAddress(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public owner = {
@@ -270,12 +221,7 @@ export class ERC721ProxyContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ERC721ProxyContract;
-            const functionSignature = 'owner()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.owner;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('owner()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -286,11 +232,12 @@ export class ERC721ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'owner'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('owner()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public removeAuthorizedAddressAtIndex = {
@@ -300,16 +247,7 @@ export class ERC721ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC721ProxyContract;
-            const inputAbi = self._lookupAbi('removeAuthorizedAddressAtIndex(address,uint256)').inputs;
-            [target,
-    index
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target,
-    index
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target,
-    index
-    ]);
-            const encodedData = self._lookupEthersInterface('removeAuthorizedAddressAtIndex(address,uint256)').functions.removeAuthorizedAddressAtIndex.encode([target,
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddressAtIndex(address,uint256)', [target,
     index
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -334,13 +272,7 @@ export class ERC721ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC721ProxyContract;
-            const inputAbi = self._lookupAbi('removeAuthorizedAddressAtIndex(address,uint256)').inputs;
-            [target,
-    index
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target,
-    index
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('removeAuthorizedAddressAtIndex(address,uint256)').functions.removeAuthorizedAddressAtIndex.encode([target,
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddressAtIndex(address,uint256)', [target,
     index
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -359,13 +291,7 @@ export class ERC721ProxyContract extends BaseContract {
             index: BigNumber,
         ): string {
             const self = this as any as ERC721ProxyContract;
-            const inputAbi = self._lookupAbi('removeAuthorizedAddressAtIndex(address,uint256)').inputs;
-            [target,
-    index
-    ] = BaseContract._formatABIDataItemList(inputAbi, [target,
-    index
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('removeAuthorizedAddressAtIndex(address,uint256)').functions.removeAuthorizedAddressAtIndex.encode([target,
+            const abiEncodedTransactionData = self._strictEncodeArguments('removeAuthorizedAddressAtIndex(address,uint256)', [target,
     index
     ]);
             return abiEncodedTransactionData;
@@ -378,18 +304,7 @@ export class ERC721ProxyContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC721ProxyContract;
-            const functionSignature = 'removeAuthorizedAddressAtIndex(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [target,
-        index
-        ] = BaseContract._formatABIDataItemList(inputAbi, [target,
-        index
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target,
-        index
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.removeAuthorizedAddressAtIndex;
-            const encodedData = ethersFunction.encode([target,
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddressAtIndex(address,uint256)', [target,
         index
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -402,11 +317,12 @@ export class ERC721ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'removeAuthorizedAddressAtIndex'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('removeAuthorizedAddressAtIndex(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getProxyId = {
@@ -416,12 +332,7 @@ export class ERC721ProxyContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ERC721ProxyContract;
-            const functionSignature = 'getProxyId()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getProxyId;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('getProxyId()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -432,11 +343,12 @@ export class ERC721ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getProxyId'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getProxyId()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public authorized = {
@@ -447,15 +359,7 @@ export class ERC721ProxyContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ERC721ProxyContract;
-            const functionSignature = 'authorized(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.authorized;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('authorized(address)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -467,11 +371,12 @@ export class ERC721ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'authorized'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('authorized(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getAuthorizedAddresses = {
@@ -481,12 +386,7 @@ export class ERC721ProxyContract extends BaseContract {
         ): Promise<string[]
         > {
             const self = this as any as ERC721ProxyContract;
-            const functionSignature = 'getAuthorizedAddresses()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getAuthorizedAddresses;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('getAuthorizedAddresses()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -497,11 +397,12 @@ export class ERC721ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getAuthorizedAddresses'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getAuthorizedAddresses()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string[]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transferOwnership = {
@@ -510,13 +411,7 @@ export class ERC721ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC721ProxyContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [newOwner
-    ]);
-            const encodedData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -538,11 +433,7 @@ export class ERC721ProxyContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC721ProxyContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -559,11 +450,7 @@ export class ERC721ProxyContract extends BaseContract {
             newOwner: string,
         ): string {
             const self = this as any as ERC721ProxyContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             return abiEncodedTransactionData;
         },
@@ -574,15 +461,7 @@ export class ERC721ProxyContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC721ProxyContract;
-            const functionSignature = 'transferOwnership(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [newOwner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [newOwner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transferOwnership;
-            const encodedData = ethersFunction.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -594,11 +473,12 @@ export class ERC721ProxyContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transferOwnership'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('transferOwnership(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -644,7 +524,7 @@ export class ERC721ProxyContract extends BaseContract {
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('ERC721Proxy', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/erc721_token.ts b/packages/abi-gen-wrappers/src/generated-wrappers/erc721_token.ts
index 251dfa5f9..aaae2ab76 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/erc721_token.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/erc721_token.ts
@@ -52,15 +52,7 @@ export class ERC721TokenContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ERC721TokenContract;
-            const functionSignature = 'getApproved(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getApproved;
-            const encodedData = ethersFunction.encode([_tokenId
+            const encodedData = self._strictEncodeArguments('getApproved(uint256)', [_tokenId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -72,11 +64,12 @@ export class ERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getApproved'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getApproved(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public approve = {
@@ -86,16 +79,7 @@ export class ERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_approved,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_approved,
-    _tokenId
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_approved,
-    _tokenId
-    ]);
-            const encodedData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_approved,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_approved,
     _tokenId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -120,13 +104,7 @@ export class ERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_approved,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_approved,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_approved,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_approved,
     _tokenId
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -145,13 +123,7 @@ export class ERC721TokenContract extends BaseContract {
             _tokenId: BigNumber,
         ): string {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_approved,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_approved,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_approved,
+            const abiEncodedTransactionData = self._strictEncodeArguments('approve(address,uint256)', [_approved,
     _tokenId
     ]);
             return abiEncodedTransactionData;
@@ -164,18 +136,7 @@ export class ERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC721TokenContract;
-            const functionSignature = 'approve(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_approved,
-        _tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_approved,
-        _tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_approved,
-        _tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.approve;
-            const encodedData = ethersFunction.encode([_approved,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_approved,
         _tokenId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -188,11 +149,12 @@ export class ERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'approve'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('approve(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transferFrom = {
@@ -203,19 +165,7 @@ export class ERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-    _to,
-    _tokenId
-    ]);
-            const encodedData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _tokenId
     ]);
@@ -243,15 +193,7 @@ export class ERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _tokenId
     ]);
@@ -272,15 +214,7 @@ export class ERC721TokenContract extends BaseContract {
             _tokenId: BigNumber,
         ): string {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _tokenId
     ]);
@@ -295,21 +229,7 @@ export class ERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC721TokenContract;
-            const functionSignature = 'transferFrom(address,address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_from,
-        _to,
-        _tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-        _to,
-        _tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-        _to,
-        _tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transferFrom;
-            const encodedData = ethersFunction.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
         _to,
         _tokenId
         ]);
@@ -323,11 +243,12 @@ export class ERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transferFrom'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('transferFrom(address,address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public safeTransferFrom1 = {
@@ -338,19 +259,7 @@ export class ERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('safeTransferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-    _to,
-    _tokenId
-    ]);
-            const encodedData = self._lookupEthersInterface('safeTransferFrom(address,address,uint256)').functions.safeTransferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256)', [_from,
     _to,
     _tokenId
     ]);
@@ -378,15 +287,7 @@ export class ERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('safeTransferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('safeTransferFrom(address,address,uint256)').functions.safeTransferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256)', [_from,
     _to,
     _tokenId
     ]);
@@ -407,15 +308,7 @@ export class ERC721TokenContract extends BaseContract {
             _tokenId: BigNumber,
         ): string {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('safeTransferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _tokenId
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('safeTransferFrom(address,address,uint256)').functions.safeTransferFrom.encode([_from,
+            const abiEncodedTransactionData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256)', [_from,
     _to,
     _tokenId
     ]);
@@ -430,21 +323,7 @@ export class ERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC721TokenContract;
-            const functionSignature = 'safeTransferFrom(address,address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_from,
-        _to,
-        _tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-        _to,
-        _tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-        _to,
-        _tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.safeTransferFrom;
-            const encodedData = ethersFunction.encode([_from,
+            const encodedData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256)', [_from,
         _to,
         _tokenId
         ]);
@@ -458,11 +337,12 @@ export class ERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'safeTransferFrom'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('safeTransferFrom(address,address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public ownerOf = {
@@ -473,15 +353,7 @@ export class ERC721TokenContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ERC721TokenContract;
-            const functionSignature = 'ownerOf(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.ownerOf;
-            const encodedData = ethersFunction.encode([_tokenId
+            const encodedData = self._strictEncodeArguments('ownerOf(uint256)', [_tokenId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -493,11 +365,12 @@ export class ERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'ownerOf'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('ownerOf(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public balanceOf = {
@@ -508,15 +381,7 @@ export class ERC721TokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as ERC721TokenContract;
-            const functionSignature = 'balanceOf(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_owner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_owner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_owner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.balanceOf;
-            const encodedData = ethersFunction.encode([_owner
+            const encodedData = self._strictEncodeArguments('balanceOf(address)', [_owner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -528,11 +393,12 @@ export class ERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'balanceOf'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('balanceOf(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public setApprovalForAll = {
@@ -542,16 +408,7 @@ export class ERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('setApprovalForAll(address,bool)').inputs;
-            [_operator,
-    _approved
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_operator,
-    _approved
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_operator,
-    _approved
-    ]);
-            const encodedData = self._lookupEthersInterface('setApprovalForAll(address,bool)').functions.setApprovalForAll.encode([_operator,
+            const encodedData = self._strictEncodeArguments('setApprovalForAll(address,bool)', [_operator,
     _approved
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -576,13 +433,7 @@ export class ERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('setApprovalForAll(address,bool)').inputs;
-            [_operator,
-    _approved
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_operator,
-    _approved
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('setApprovalForAll(address,bool)').functions.setApprovalForAll.encode([_operator,
+            const encodedData = self._strictEncodeArguments('setApprovalForAll(address,bool)', [_operator,
     _approved
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -601,13 +452,7 @@ export class ERC721TokenContract extends BaseContract {
             _approved: boolean,
         ): string {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('setApprovalForAll(address,bool)').inputs;
-            [_operator,
-    _approved
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_operator,
-    _approved
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('setApprovalForAll(address,bool)').functions.setApprovalForAll.encode([_operator,
+            const abiEncodedTransactionData = self._strictEncodeArguments('setApprovalForAll(address,bool)', [_operator,
     _approved
     ]);
             return abiEncodedTransactionData;
@@ -620,18 +465,7 @@ export class ERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC721TokenContract;
-            const functionSignature = 'setApprovalForAll(address,bool)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_operator,
-        _approved
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_operator,
-        _approved
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_operator,
-        _approved
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.setApprovalForAll;
-            const encodedData = ethersFunction.encode([_operator,
+            const encodedData = self._strictEncodeArguments('setApprovalForAll(address,bool)', [_operator,
         _approved
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -644,11 +478,12 @@ export class ERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'setApprovalForAll'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('setApprovalForAll(address,bool)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public safeTransferFrom2 = {
@@ -660,22 +495,7 @@ export class ERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('safeTransferFrom(address,address,uint256,bytes)').inputs;
-            [_from,
-    _to,
-    _tokenId,
-    _data
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId,
-    _data
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-    _to,
-    _tokenId,
-    _data
-    ]);
-            const encodedData = self._lookupEthersInterface('safeTransferFrom(address,address,uint256,bytes)').functions.safeTransferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256,bytes)', [_from,
     _to,
     _tokenId,
     _data
@@ -706,17 +526,7 @@ export class ERC721TokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('safeTransferFrom(address,address,uint256,bytes)').inputs;
-            [_from,
-    _to,
-    _tokenId,
-    _data
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId,
-    _data
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('safeTransferFrom(address,address,uint256,bytes)').functions.safeTransferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256,bytes)', [_from,
     _to,
     _tokenId,
     _data
@@ -739,17 +549,7 @@ export class ERC721TokenContract extends BaseContract {
             _data: string,
         ): string {
             const self = this as any as ERC721TokenContract;
-            const inputAbi = self._lookupAbi('safeTransferFrom(address,address,uint256,bytes)').inputs;
-            [_from,
-    _to,
-    _tokenId,
-    _data
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _tokenId,
-    _data
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('safeTransferFrom(address,address,uint256,bytes)').functions.safeTransferFrom.encode([_from,
+            const abiEncodedTransactionData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256,bytes)', [_from,
     _to,
     _tokenId,
     _data
@@ -766,24 +566,7 @@ export class ERC721TokenContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ERC721TokenContract;
-            const functionSignature = 'safeTransferFrom(address,address,uint256,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_from,
-        _to,
-        _tokenId,
-        _data
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-        _to,
-        _tokenId,
-        _data
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-        _to,
-        _tokenId,
-        _data
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.safeTransferFrom;
-            const encodedData = ethersFunction.encode([_from,
+            const encodedData = self._strictEncodeArguments('safeTransferFrom(address,address,uint256,bytes)', [_from,
         _to,
         _tokenId,
         _data
@@ -798,11 +581,12 @@ export class ERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'safeTransferFrom'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('safeTransferFrom(address,address,uint256,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public isApprovedForAll = {
@@ -814,18 +598,7 @@ export class ERC721TokenContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ERC721TokenContract;
-            const functionSignature = 'isApprovedForAll(address,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_owner,
-        _operator
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_owner,
-        _operator
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_owner,
-        _operator
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.isApprovedForAll;
-            const encodedData = ethersFunction.encode([_owner,
+            const encodedData = self._strictEncodeArguments('isApprovedForAll(address,address)', [_owner,
         _operator
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -838,11 +611,12 @@ export class ERC721TokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'isApprovedForAll'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('isApprovedForAll(address,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -888,7 +662,7 @@ export class ERC721TokenContract extends BaseContract {
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('ERC721Token', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/exchange.ts b/packages/abi-gen-wrappers/src/generated-wrappers/exchange.ts
index 11b5e7024..146fa7c2a 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/exchange.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/exchange.ts
@@ -78,15 +78,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'filled(bytes32)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.filled;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('filled(bytes32)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -98,11 +90,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'filled'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('filled(bytes32)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public batchFillOrders = {
@@ -113,19 +106,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('batchFillOrders(tuple[],uint256[],bytes[])').inputs;
-            [orders,
-    takerAssetFillAmounts,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmounts,
-    signatures
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-    takerAssetFillAmounts,
-    signatures
-    ]);
-            const encodedData = self._lookupEthersInterface('batchFillOrders(tuple[],uint256[],bytes[])').functions.batchFillOrders.encode([orders,
+            const encodedData = self._strictEncodeArguments('batchFillOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])', [orders,
     takerAssetFillAmounts,
     signatures
     ]);
@@ -153,15 +134,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('batchFillOrders(tuple[],uint256[],bytes[])').inputs;
-            [orders,
-    takerAssetFillAmounts,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmounts,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('batchFillOrders(tuple[],uint256[],bytes[])').functions.batchFillOrders.encode([orders,
+            const encodedData = self._strictEncodeArguments('batchFillOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])', [orders,
     takerAssetFillAmounts,
     signatures
     ]);
@@ -182,15 +155,7 @@ export class ExchangeContract extends BaseContract {
             signatures: string[],
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('batchFillOrders(tuple[],uint256[],bytes[])').inputs;
-            [orders,
-    takerAssetFillAmounts,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmounts,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('batchFillOrders(tuple[],uint256[],bytes[])').functions.batchFillOrders.encode([orders,
+            const abiEncodedTransactionData = self._strictEncodeArguments('batchFillOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])', [orders,
     takerAssetFillAmounts,
     signatures
     ]);
@@ -205,21 +170,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'batchFillOrders(tuple[],uint256[],bytes[])';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders,
-        takerAssetFillAmounts,
-        signatures
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-        takerAssetFillAmounts,
-        signatures
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-        takerAssetFillAmounts,
-        signatures
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.batchFillOrders;
-            const encodedData = ethersFunction.encode([orders,
+            const encodedData = self._strictEncodeArguments('batchFillOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])', [orders,
         takerAssetFillAmounts,
         signatures
         ]);
@@ -233,11 +184,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'batchFillOrders'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('batchFillOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public cancelled = {
@@ -248,15 +200,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'cancelled(bytes32)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.cancelled;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('cancelled(bytes32)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -268,11 +212,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'cancelled'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('cancelled(bytes32)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public preSign = {
@@ -283,19 +228,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('preSign(bytes32,address,bytes)').inputs;
-            [hash,
-    signerAddress,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [hash,
-    signerAddress,
-    signature
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [hash,
-    signerAddress,
-    signature
-    ]);
-            const encodedData = self._lookupEthersInterface('preSign(bytes32,address,bytes)').functions.preSign.encode([hash,
+            const encodedData = self._strictEncodeArguments('preSign(bytes32,address,bytes)', [hash,
     signerAddress,
     signature
     ]);
@@ -323,15 +256,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('preSign(bytes32,address,bytes)').inputs;
-            [hash,
-    signerAddress,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [hash,
-    signerAddress,
-    signature
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('preSign(bytes32,address,bytes)').functions.preSign.encode([hash,
+            const encodedData = self._strictEncodeArguments('preSign(bytes32,address,bytes)', [hash,
     signerAddress,
     signature
     ]);
@@ -352,15 +277,7 @@ export class ExchangeContract extends BaseContract {
             signature: string,
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('preSign(bytes32,address,bytes)').inputs;
-            [hash,
-    signerAddress,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [hash,
-    signerAddress,
-    signature
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('preSign(bytes32,address,bytes)').functions.preSign.encode([hash,
+            const abiEncodedTransactionData = self._strictEncodeArguments('preSign(bytes32,address,bytes)', [hash,
     signerAddress,
     signature
     ]);
@@ -375,21 +292,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'preSign(bytes32,address,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [hash,
-        signerAddress,
-        signature
-        ] = BaseContract._formatABIDataItemList(inputAbi, [hash,
-        signerAddress,
-        signature
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [hash,
-        signerAddress,
-        signature
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.preSign;
-            const encodedData = ethersFunction.encode([hash,
+            const encodedData = self._strictEncodeArguments('preSign(bytes32,address,bytes)', [hash,
         signerAddress,
         signature
         ]);
@@ -403,11 +306,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'preSign'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('preSign(bytes32,address,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public matchOrders = {
@@ -419,22 +323,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)').inputs;
-            [leftOrder,
-    rightOrder,
-    leftSignature,
-    rightSignature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [leftOrder,
-    rightOrder,
-    leftSignature,
-    rightSignature
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [leftOrder,
-    rightOrder,
-    leftSignature,
-    rightSignature
-    ]);
-            const encodedData = self._lookupEthersInterface('matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)').functions.matchOrders.encode([leftOrder,
+            const encodedData = self._strictEncodeArguments('matchOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),bytes,bytes)', [leftOrder,
     rightOrder,
     leftSignature,
     rightSignature
@@ -465,17 +354,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)').inputs;
-            [leftOrder,
-    rightOrder,
-    leftSignature,
-    rightSignature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [leftOrder,
-    rightOrder,
-    leftSignature,
-    rightSignature
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)').functions.matchOrders.encode([leftOrder,
+            const encodedData = self._strictEncodeArguments('matchOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),bytes,bytes)', [leftOrder,
     rightOrder,
     leftSignature,
     rightSignature
@@ -498,17 +377,7 @@ export class ExchangeContract extends BaseContract {
             rightSignature: string,
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)').inputs;
-            [leftOrder,
-    rightOrder,
-    leftSignature,
-    rightSignature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [leftOrder,
-    rightOrder,
-    leftSignature,
-    rightSignature
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)').functions.matchOrders.encode([leftOrder,
+            const abiEncodedTransactionData = self._strictEncodeArguments('matchOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),bytes,bytes)', [leftOrder,
     rightOrder,
     leftSignature,
     rightSignature
@@ -525,24 +394,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<{left: {makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber};right: {makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber};leftMakerAssetSpreadAmount: BigNumber}
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'matchOrders({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},{address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},bytes,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [leftOrder,
-        rightOrder,
-        leftSignature,
-        rightSignature
-        ] = BaseContract._formatABIDataItemList(inputAbi, [leftOrder,
-        rightOrder,
-        leftSignature,
-        rightSignature
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [leftOrder,
-        rightOrder,
-        leftSignature,
-        rightSignature
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.matchOrders;
-            const encodedData = ethersFunction.encode([leftOrder,
+            const encodedData = self._strictEncodeArguments('matchOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),bytes,bytes)', [leftOrder,
         rightOrder,
         leftSignature,
         rightSignature
@@ -557,11 +409,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'matchOrders'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('matchOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),bytes,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{left: {makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber};right: {makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber};leftMakerAssetSpreadAmount: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public fillOrderNoThrow = {
@@ -572,19 +425,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('fillOrderNoThrow({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').inputs;
-            [order,
-    takerAssetFillAmount,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-    takerAssetFillAmount,
-    signature
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order,
-    takerAssetFillAmount,
-    signature
-    ]);
-            const encodedData = self._lookupEthersInterface('fillOrderNoThrow({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').functions.fillOrderNoThrow.encode([order,
+            const encodedData = self._strictEncodeArguments('fillOrderNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)', [order,
     takerAssetFillAmount,
     signature
     ]);
@@ -612,15 +453,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('fillOrderNoThrow({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').inputs;
-            [order,
-    takerAssetFillAmount,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-    takerAssetFillAmount,
-    signature
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('fillOrderNoThrow({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').functions.fillOrderNoThrow.encode([order,
+            const encodedData = self._strictEncodeArguments('fillOrderNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)', [order,
     takerAssetFillAmount,
     signature
     ]);
@@ -641,15 +474,7 @@ export class ExchangeContract extends BaseContract {
             signature: string,
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('fillOrderNoThrow({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').inputs;
-            [order,
-    takerAssetFillAmount,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-    takerAssetFillAmount,
-    signature
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('fillOrderNoThrow({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').functions.fillOrderNoThrow.encode([order,
+            const abiEncodedTransactionData = self._strictEncodeArguments('fillOrderNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)', [order,
     takerAssetFillAmount,
     signature
     ]);
@@ -664,21 +489,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'fillOrderNoThrow({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [order,
-        takerAssetFillAmount,
-        signature
-        ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-        takerAssetFillAmount,
-        signature
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order,
-        takerAssetFillAmount,
-        signature
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.fillOrderNoThrow;
-            const encodedData = ethersFunction.encode([order,
+            const encodedData = self._strictEncodeArguments('fillOrderNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)', [order,
         takerAssetFillAmount,
         signature
         ]);
@@ -692,11 +503,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'fillOrderNoThrow'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('fillOrderNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public assetProxies = {
@@ -707,15 +519,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'assetProxies(bytes4)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.assetProxies;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('assetProxies(bytes4)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -727,11 +531,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'assetProxies'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('assetProxies(bytes4)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public batchCancelOrders = {
@@ -740,13 +545,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('batchCancelOrders(tuple[])').inputs;
-            [orders
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders
-    ]);
-            const encodedData = self._lookupEthersInterface('batchCancelOrders(tuple[])').functions.batchCancelOrders.encode([orders
+            const encodedData = self._strictEncodeArguments('batchCancelOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[])', [orders
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -768,11 +567,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('batchCancelOrders(tuple[])').inputs;
-            [orders
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('batchCancelOrders(tuple[])').functions.batchCancelOrders.encode([orders
+            const encodedData = self._strictEncodeArguments('batchCancelOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[])', [orders
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -789,11 +584,7 @@ export class ExchangeContract extends BaseContract {
             orders: Array<{makerAddress: string;takerAddress: string;feeRecipientAddress: string;senderAddress: string;makerAssetAmount: BigNumber;takerAssetAmount: BigNumber;makerFee: BigNumber;takerFee: BigNumber;expirationTimeSeconds: BigNumber;salt: BigNumber;makerAssetData: string;takerAssetData: string}>,
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('batchCancelOrders(tuple[])').inputs;
-            [orders
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('batchCancelOrders(tuple[])').functions.batchCancelOrders.encode([orders
+            const abiEncodedTransactionData = self._strictEncodeArguments('batchCancelOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[])', [orders
     ]);
             return abiEncodedTransactionData;
         },
@@ -804,15 +595,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'batchCancelOrders(tuple[])';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.batchCancelOrders;
-            const encodedData = ethersFunction.encode([orders
+            const encodedData = self._strictEncodeArguments('batchCancelOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[])', [orders
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -824,11 +607,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'batchCancelOrders'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('batchCancelOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[])');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public batchFillOrKillOrders = {
@@ -839,19 +623,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('batchFillOrKillOrders(tuple[],uint256[],bytes[])').inputs;
-            [orders,
-    takerAssetFillAmounts,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmounts,
-    signatures
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-    takerAssetFillAmounts,
-    signatures
-    ]);
-            const encodedData = self._lookupEthersInterface('batchFillOrKillOrders(tuple[],uint256[],bytes[])').functions.batchFillOrKillOrders.encode([orders,
+            const encodedData = self._strictEncodeArguments('batchFillOrKillOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])', [orders,
     takerAssetFillAmounts,
     signatures
     ]);
@@ -879,15 +651,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('batchFillOrKillOrders(tuple[],uint256[],bytes[])').inputs;
-            [orders,
-    takerAssetFillAmounts,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmounts,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('batchFillOrKillOrders(tuple[],uint256[],bytes[])').functions.batchFillOrKillOrders.encode([orders,
+            const encodedData = self._strictEncodeArguments('batchFillOrKillOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])', [orders,
     takerAssetFillAmounts,
     signatures
     ]);
@@ -908,15 +672,7 @@ export class ExchangeContract extends BaseContract {
             signatures: string[],
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('batchFillOrKillOrders(tuple[],uint256[],bytes[])').inputs;
-            [orders,
-    takerAssetFillAmounts,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmounts,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('batchFillOrKillOrders(tuple[],uint256[],bytes[])').functions.batchFillOrKillOrders.encode([orders,
+            const abiEncodedTransactionData = self._strictEncodeArguments('batchFillOrKillOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])', [orders,
     takerAssetFillAmounts,
     signatures
     ]);
@@ -931,21 +687,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'batchFillOrKillOrders(tuple[],uint256[],bytes[])';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders,
-        takerAssetFillAmounts,
-        signatures
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-        takerAssetFillAmounts,
-        signatures
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-        takerAssetFillAmounts,
-        signatures
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.batchFillOrKillOrders;
-            const encodedData = ethersFunction.encode([orders,
+            const encodedData = self._strictEncodeArguments('batchFillOrKillOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])', [orders,
         takerAssetFillAmounts,
         signatures
         ]);
@@ -959,11 +701,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'batchFillOrKillOrders'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('batchFillOrKillOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public cancelOrdersUpTo = {
@@ -972,13 +715,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('cancelOrdersUpTo(uint256)').inputs;
-            [targetOrderEpoch
-    ] = BaseContract._formatABIDataItemList(inputAbi, [targetOrderEpoch
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [targetOrderEpoch
-    ]);
-            const encodedData = self._lookupEthersInterface('cancelOrdersUpTo(uint256)').functions.cancelOrdersUpTo.encode([targetOrderEpoch
+            const encodedData = self._strictEncodeArguments('cancelOrdersUpTo(uint256)', [targetOrderEpoch
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1000,11 +737,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('cancelOrdersUpTo(uint256)').inputs;
-            [targetOrderEpoch
-    ] = BaseContract._formatABIDataItemList(inputAbi, [targetOrderEpoch
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('cancelOrdersUpTo(uint256)').functions.cancelOrdersUpTo.encode([targetOrderEpoch
+            const encodedData = self._strictEncodeArguments('cancelOrdersUpTo(uint256)', [targetOrderEpoch
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1021,11 +754,7 @@ export class ExchangeContract extends BaseContract {
             targetOrderEpoch: BigNumber,
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('cancelOrdersUpTo(uint256)').inputs;
-            [targetOrderEpoch
-    ] = BaseContract._formatABIDataItemList(inputAbi, [targetOrderEpoch
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('cancelOrdersUpTo(uint256)').functions.cancelOrdersUpTo.encode([targetOrderEpoch
+            const abiEncodedTransactionData = self._strictEncodeArguments('cancelOrdersUpTo(uint256)', [targetOrderEpoch
     ]);
             return abiEncodedTransactionData;
         },
@@ -1036,15 +765,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'cancelOrdersUpTo(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [targetOrderEpoch
-        ] = BaseContract._formatABIDataItemList(inputAbi, [targetOrderEpoch
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [targetOrderEpoch
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.cancelOrdersUpTo;
-            const encodedData = ethersFunction.encode([targetOrderEpoch
+            const encodedData = self._strictEncodeArguments('cancelOrdersUpTo(uint256)', [targetOrderEpoch
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1056,11 +777,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'cancelOrdersUpTo'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('cancelOrdersUpTo(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public batchFillOrdersNoThrow = {
@@ -1071,19 +793,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('batchFillOrdersNoThrow(tuple[],uint256[],bytes[])').inputs;
-            [orders,
-    takerAssetFillAmounts,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmounts,
-    signatures
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-    takerAssetFillAmounts,
-    signatures
-    ]);
-            const encodedData = self._lookupEthersInterface('batchFillOrdersNoThrow(tuple[],uint256[],bytes[])').functions.batchFillOrdersNoThrow.encode([orders,
+            const encodedData = self._strictEncodeArguments('batchFillOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])', [orders,
     takerAssetFillAmounts,
     signatures
     ]);
@@ -1111,15 +821,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('batchFillOrdersNoThrow(tuple[],uint256[],bytes[])').inputs;
-            [orders,
-    takerAssetFillAmounts,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmounts,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('batchFillOrdersNoThrow(tuple[],uint256[],bytes[])').functions.batchFillOrdersNoThrow.encode([orders,
+            const encodedData = self._strictEncodeArguments('batchFillOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])', [orders,
     takerAssetFillAmounts,
     signatures
     ]);
@@ -1140,15 +842,7 @@ export class ExchangeContract extends BaseContract {
             signatures: string[],
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('batchFillOrdersNoThrow(tuple[],uint256[],bytes[])').inputs;
-            [orders,
-    takerAssetFillAmounts,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmounts,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('batchFillOrdersNoThrow(tuple[],uint256[],bytes[])').functions.batchFillOrdersNoThrow.encode([orders,
+            const abiEncodedTransactionData = self._strictEncodeArguments('batchFillOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])', [orders,
     takerAssetFillAmounts,
     signatures
     ]);
@@ -1163,21 +857,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'batchFillOrdersNoThrow(tuple[],uint256[],bytes[])';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders,
-        takerAssetFillAmounts,
-        signatures
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-        takerAssetFillAmounts,
-        signatures
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-        takerAssetFillAmounts,
-        signatures
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.batchFillOrdersNoThrow;
-            const encodedData = ethersFunction.encode([orders,
+            const encodedData = self._strictEncodeArguments('batchFillOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])', [orders,
         takerAssetFillAmounts,
         signatures
         ]);
@@ -1191,11 +871,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'batchFillOrdersNoThrow'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('batchFillOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getAssetProxy = {
@@ -1206,15 +887,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'getAssetProxy(bytes4)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [assetProxyId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [assetProxyId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [assetProxyId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getAssetProxy;
-            const encodedData = ethersFunction.encode([assetProxyId
+            const encodedData = self._strictEncodeArguments('getAssetProxy(bytes4)', [assetProxyId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1226,11 +899,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getAssetProxy'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getAssetProxy(bytes4)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transactions = {
@@ -1241,15 +915,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'transactions(bytes32)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transactions;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('transactions(bytes32)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1261,11 +927,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transactions'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('transactions(bytes32)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public fillOrKillOrder = {
@@ -1276,19 +943,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('fillOrKillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').inputs;
-            [order,
-    takerAssetFillAmount,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-    takerAssetFillAmount,
-    signature
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order,
-    takerAssetFillAmount,
-    signature
-    ]);
-            const encodedData = self._lookupEthersInterface('fillOrKillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').functions.fillOrKillOrder.encode([order,
+            const encodedData = self._strictEncodeArguments('fillOrKillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)', [order,
     takerAssetFillAmount,
     signature
     ]);
@@ -1316,15 +971,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('fillOrKillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').inputs;
-            [order,
-    takerAssetFillAmount,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-    takerAssetFillAmount,
-    signature
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('fillOrKillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').functions.fillOrKillOrder.encode([order,
+            const encodedData = self._strictEncodeArguments('fillOrKillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)', [order,
     takerAssetFillAmount,
     signature
     ]);
@@ -1345,15 +992,7 @@ export class ExchangeContract extends BaseContract {
             signature: string,
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('fillOrKillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').inputs;
-            [order,
-    takerAssetFillAmount,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-    takerAssetFillAmount,
-    signature
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('fillOrKillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').functions.fillOrKillOrder.encode([order,
+            const abiEncodedTransactionData = self._strictEncodeArguments('fillOrKillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)', [order,
     takerAssetFillAmount,
     signature
     ]);
@@ -1368,21 +1007,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'fillOrKillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [order,
-        takerAssetFillAmount,
-        signature
-        ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-        takerAssetFillAmount,
-        signature
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order,
-        takerAssetFillAmount,
-        signature
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.fillOrKillOrder;
-            const encodedData = ethersFunction.encode([order,
+            const encodedData = self._strictEncodeArguments('fillOrKillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)', [order,
         takerAssetFillAmount,
         signature
         ]);
@@ -1396,11 +1021,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'fillOrKillOrder'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('fillOrKillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public setSignatureValidatorApproval = {
@@ -1410,16 +1036,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('setSignatureValidatorApproval(address,bool)').inputs;
-            [validatorAddress,
-    approval
-    ] = BaseContract._formatABIDataItemList(inputAbi, [validatorAddress,
-    approval
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [validatorAddress,
-    approval
-    ]);
-            const encodedData = self._lookupEthersInterface('setSignatureValidatorApproval(address,bool)').functions.setSignatureValidatorApproval.encode([validatorAddress,
+            const encodedData = self._strictEncodeArguments('setSignatureValidatorApproval(address,bool)', [validatorAddress,
     approval
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -1444,13 +1061,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('setSignatureValidatorApproval(address,bool)').inputs;
-            [validatorAddress,
-    approval
-    ] = BaseContract._formatABIDataItemList(inputAbi, [validatorAddress,
-    approval
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('setSignatureValidatorApproval(address,bool)').functions.setSignatureValidatorApproval.encode([validatorAddress,
+            const encodedData = self._strictEncodeArguments('setSignatureValidatorApproval(address,bool)', [validatorAddress,
     approval
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -1469,13 +1080,7 @@ export class ExchangeContract extends BaseContract {
             approval: boolean,
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('setSignatureValidatorApproval(address,bool)').inputs;
-            [validatorAddress,
-    approval
-    ] = BaseContract._formatABIDataItemList(inputAbi, [validatorAddress,
-    approval
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('setSignatureValidatorApproval(address,bool)').functions.setSignatureValidatorApproval.encode([validatorAddress,
+            const abiEncodedTransactionData = self._strictEncodeArguments('setSignatureValidatorApproval(address,bool)', [validatorAddress,
     approval
     ]);
             return abiEncodedTransactionData;
@@ -1488,18 +1093,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'setSignatureValidatorApproval(address,bool)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [validatorAddress,
-        approval
-        ] = BaseContract._formatABIDataItemList(inputAbi, [validatorAddress,
-        approval
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [validatorAddress,
-        approval
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.setSignatureValidatorApproval;
-            const encodedData = ethersFunction.encode([validatorAddress,
+            const encodedData = self._strictEncodeArguments('setSignatureValidatorApproval(address,bool)', [validatorAddress,
         approval
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -1512,11 +1106,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'setSignatureValidatorApproval'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('setSignatureValidatorApproval(address,bool)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public allowedValidators = {
@@ -1528,18 +1123,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'allowedValidators(address,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0,
-        index_1
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0,
-        index_1
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0,
-        index_1
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.allowedValidators;
-            const encodedData = ethersFunction.encode([index_0,
+            const encodedData = self._strictEncodeArguments('allowedValidators(address,address)', [index_0,
         index_1
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -1552,11 +1136,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'allowedValidators'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('allowedValidators(address,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public marketSellOrders = {
@@ -1567,19 +1152,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('marketSellOrders(tuple[],uint256,bytes[])').inputs;
-            [orders,
-    takerAssetFillAmount,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmount,
-    signatures
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-    takerAssetFillAmount,
-    signatures
-    ]);
-            const encodedData = self._lookupEthersInterface('marketSellOrders(tuple[],uint256,bytes[])').functions.marketSellOrders.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketSellOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
     takerAssetFillAmount,
     signatures
     ]);
@@ -1607,15 +1180,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('marketSellOrders(tuple[],uint256,bytes[])').inputs;
-            [orders,
-    takerAssetFillAmount,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmount,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('marketSellOrders(tuple[],uint256,bytes[])').functions.marketSellOrders.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketSellOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
     takerAssetFillAmount,
     signatures
     ]);
@@ -1636,15 +1201,7 @@ export class ExchangeContract extends BaseContract {
             signatures: string[],
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('marketSellOrders(tuple[],uint256,bytes[])').inputs;
-            [orders,
-    takerAssetFillAmount,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmount,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('marketSellOrders(tuple[],uint256,bytes[])').functions.marketSellOrders.encode([orders,
+            const abiEncodedTransactionData = self._strictEncodeArguments('marketSellOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
     takerAssetFillAmount,
     signatures
     ]);
@@ -1659,21 +1216,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'marketSellOrders(tuple[],uint256,bytes[])';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders,
-        takerAssetFillAmount,
-        signatures
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-        takerAssetFillAmount,
-        signatures
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-        takerAssetFillAmount,
-        signatures
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.marketSellOrders;
-            const encodedData = ethersFunction.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketSellOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
         takerAssetFillAmount,
         signatures
         ]);
@@ -1687,11 +1230,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'marketSellOrders'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('marketSellOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getOrdersInfo = {
@@ -1702,15 +1246,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<Array<{orderStatus: number;orderHash: string;orderTakerAssetFilledAmount: BigNumber}>
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'getOrdersInfo(tuple[])';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getOrdersInfo;
-            const encodedData = ethersFunction.encode([orders
+            const encodedData = self._strictEncodeArguments('getOrdersInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[])', [orders
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -1722,11 +1258,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getOrdersInfo'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getOrdersInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[])');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<Array<{orderStatus: number;orderHash: string;orderTakerAssetFilledAmount: BigNumber}>
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public preSigned = {
@@ -1738,18 +1275,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'preSigned(bytes32,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0,
-        index_1
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0,
-        index_1
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0,
-        index_1
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.preSigned;
-            const encodedData = ethersFunction.encode([index_0,
+            const encodedData = self._strictEncodeArguments('preSigned(bytes32,address)', [index_0,
         index_1
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -1762,11 +1288,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'preSigned'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('preSigned(bytes32,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public owner = {
@@ -1776,12 +1303,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'owner()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.owner;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('owner()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -1792,11 +1314,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'owner'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('owner()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public isValidSignature = {
@@ -1809,21 +1332,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'isValidSignature(bytes32,address,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [hash,
-        signerAddress,
-        signature
-        ] = BaseContract._formatABIDataItemList(inputAbi, [hash,
-        signerAddress,
-        signature
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [hash,
-        signerAddress,
-        signature
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.isValidSignature;
-            const encodedData = ethersFunction.encode([hash,
+            const encodedData = self._strictEncodeArguments('isValidSignature(bytes32,address,bytes)', [hash,
         signerAddress,
         signature
         ]);
@@ -1837,11 +1346,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'isValidSignature'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('isValidSignature(bytes32,address,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public marketBuyOrdersNoThrow = {
@@ -1852,19 +1362,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('marketBuyOrdersNoThrow(tuple[],uint256,bytes[])').inputs;
-            [orders,
-    makerAssetFillAmount,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    makerAssetFillAmount,
-    signatures
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-    makerAssetFillAmount,
-    signatures
-    ]);
-            const encodedData = self._lookupEthersInterface('marketBuyOrdersNoThrow(tuple[],uint256,bytes[])').functions.marketBuyOrdersNoThrow.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketBuyOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
     makerAssetFillAmount,
     signatures
     ]);
@@ -1892,15 +1390,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('marketBuyOrdersNoThrow(tuple[],uint256,bytes[])').inputs;
-            [orders,
-    makerAssetFillAmount,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    makerAssetFillAmount,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('marketBuyOrdersNoThrow(tuple[],uint256,bytes[])').functions.marketBuyOrdersNoThrow.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketBuyOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
     makerAssetFillAmount,
     signatures
     ]);
@@ -1921,15 +1411,7 @@ export class ExchangeContract extends BaseContract {
             signatures: string[],
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('marketBuyOrdersNoThrow(tuple[],uint256,bytes[])').inputs;
-            [orders,
-    makerAssetFillAmount,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    makerAssetFillAmount,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('marketBuyOrdersNoThrow(tuple[],uint256,bytes[])').functions.marketBuyOrdersNoThrow.encode([orders,
+            const abiEncodedTransactionData = self._strictEncodeArguments('marketBuyOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
     makerAssetFillAmount,
     signatures
     ]);
@@ -1944,21 +1426,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'marketBuyOrdersNoThrow(tuple[],uint256,bytes[])';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders,
-        makerAssetFillAmount,
-        signatures
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-        makerAssetFillAmount,
-        signatures
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-        makerAssetFillAmount,
-        signatures
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.marketBuyOrdersNoThrow;
-            const encodedData = ethersFunction.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketBuyOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
         makerAssetFillAmount,
         signatures
         ]);
@@ -1972,11 +1440,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'marketBuyOrdersNoThrow'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('marketBuyOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public fillOrder = {
@@ -1987,19 +1456,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('fillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').inputs;
-            [order,
-    takerAssetFillAmount,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-    takerAssetFillAmount,
-    signature
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order,
-    takerAssetFillAmount,
-    signature
-    ]);
-            const encodedData = self._lookupEthersInterface('fillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').functions.fillOrder.encode([order,
+            const encodedData = self._strictEncodeArguments('fillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)', [order,
     takerAssetFillAmount,
     signature
     ]);
@@ -2027,15 +1484,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('fillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').inputs;
-            [order,
-    takerAssetFillAmount,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-    takerAssetFillAmount,
-    signature
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('fillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').functions.fillOrder.encode([order,
+            const encodedData = self._strictEncodeArguments('fillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)', [order,
     takerAssetFillAmount,
     signature
     ]);
@@ -2056,15 +1505,7 @@ export class ExchangeContract extends BaseContract {
             signature: string,
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('fillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').inputs;
-            [order,
-    takerAssetFillAmount,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-    takerAssetFillAmount,
-    signature
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('fillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)').functions.fillOrder.encode([order,
+            const abiEncodedTransactionData = self._strictEncodeArguments('fillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)', [order,
     takerAssetFillAmount,
     signature
     ]);
@@ -2079,21 +1520,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'fillOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},uint256,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [order,
-        takerAssetFillAmount,
-        signature
-        ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-        takerAssetFillAmount,
-        signature
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order,
-        takerAssetFillAmount,
-        signature
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.fillOrder;
-            const encodedData = ethersFunction.encode([order,
+            const encodedData = self._strictEncodeArguments('fillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)', [order,
         takerAssetFillAmount,
         signature
         ]);
@@ -2107,11 +1534,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'fillOrder'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('fillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public executeTransaction = {
@@ -2123,22 +1551,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('executeTransaction(uint256,address,bytes,bytes)').inputs;
-            [salt,
-    signerAddress,
-    data,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [salt,
-    signerAddress,
-    data,
-    signature
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [salt,
-    signerAddress,
-    data,
-    signature
-    ]);
-            const encodedData = self._lookupEthersInterface('executeTransaction(uint256,address,bytes,bytes)').functions.executeTransaction.encode([salt,
+            const encodedData = self._strictEncodeArguments('executeTransaction(uint256,address,bytes,bytes)', [salt,
     signerAddress,
     data,
     signature
@@ -2169,17 +1582,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('executeTransaction(uint256,address,bytes,bytes)').inputs;
-            [salt,
-    signerAddress,
-    data,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [salt,
-    signerAddress,
-    data,
-    signature
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('executeTransaction(uint256,address,bytes,bytes)').functions.executeTransaction.encode([salt,
+            const encodedData = self._strictEncodeArguments('executeTransaction(uint256,address,bytes,bytes)', [salt,
     signerAddress,
     data,
     signature
@@ -2202,17 +1605,7 @@ export class ExchangeContract extends BaseContract {
             signature: string,
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('executeTransaction(uint256,address,bytes,bytes)').inputs;
-            [salt,
-    signerAddress,
-    data,
-    signature
-    ] = BaseContract._formatABIDataItemList(inputAbi, [salt,
-    signerAddress,
-    data,
-    signature
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('executeTransaction(uint256,address,bytes,bytes)').functions.executeTransaction.encode([salt,
+            const abiEncodedTransactionData = self._strictEncodeArguments('executeTransaction(uint256,address,bytes,bytes)', [salt,
     signerAddress,
     data,
     signature
@@ -2229,24 +1622,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'executeTransaction(uint256,address,bytes,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [salt,
-        signerAddress,
-        data,
-        signature
-        ] = BaseContract._formatABIDataItemList(inputAbi, [salt,
-        signerAddress,
-        data,
-        signature
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [salt,
-        signerAddress,
-        data,
-        signature
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.executeTransaction;
-            const encodedData = ethersFunction.encode([salt,
+            const encodedData = self._strictEncodeArguments('executeTransaction(uint256,address,bytes,bytes)', [salt,
         signerAddress,
         data,
         signature
@@ -2261,11 +1637,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'executeTransaction'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('executeTransaction(uint256,address,bytes,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public registerAssetProxy = {
@@ -2274,13 +1651,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('registerAssetProxy(address)').inputs;
-            [assetProxy
-    ] = BaseContract._formatABIDataItemList(inputAbi, [assetProxy
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [assetProxy
-    ]);
-            const encodedData = self._lookupEthersInterface('registerAssetProxy(address)').functions.registerAssetProxy.encode([assetProxy
+            const encodedData = self._strictEncodeArguments('registerAssetProxy(address)', [assetProxy
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -2302,11 +1673,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('registerAssetProxy(address)').inputs;
-            [assetProxy
-    ] = BaseContract._formatABIDataItemList(inputAbi, [assetProxy
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('registerAssetProxy(address)').functions.registerAssetProxy.encode([assetProxy
+            const encodedData = self._strictEncodeArguments('registerAssetProxy(address)', [assetProxy
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -2323,11 +1690,7 @@ export class ExchangeContract extends BaseContract {
             assetProxy: string,
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('registerAssetProxy(address)').inputs;
-            [assetProxy
-    ] = BaseContract._formatABIDataItemList(inputAbi, [assetProxy
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('registerAssetProxy(address)').functions.registerAssetProxy.encode([assetProxy
+            const abiEncodedTransactionData = self._strictEncodeArguments('registerAssetProxy(address)', [assetProxy
     ]);
             return abiEncodedTransactionData;
         },
@@ -2338,15 +1701,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'registerAssetProxy(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [assetProxy
-        ] = BaseContract._formatABIDataItemList(inputAbi, [assetProxy
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [assetProxy
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.registerAssetProxy;
-            const encodedData = ethersFunction.encode([assetProxy
+            const encodedData = self._strictEncodeArguments('registerAssetProxy(address)', [assetProxy
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -2358,11 +1713,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'registerAssetProxy'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('registerAssetProxy(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getOrderInfo = {
@@ -2373,15 +1729,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<{orderStatus: number;orderHash: string;orderTakerAssetFilledAmount: BigNumber}
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'getOrderInfo({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [order
-        ] = BaseContract._formatABIDataItemList(inputAbi, [order
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getOrderInfo;
-            const encodedData = ethersFunction.encode([order
+            const encodedData = self._strictEncodeArguments('getOrderInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))', [order
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -2393,11 +1741,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getOrderInfo'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getOrderInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{orderStatus: number;orderHash: string;orderTakerAssetFilledAmount: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public cancelOrder = {
@@ -2406,13 +1755,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('cancelOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})').inputs;
-            [order
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order
-    ]);
-            const encodedData = self._lookupEthersInterface('cancelOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})').functions.cancelOrder.encode([order
+            const encodedData = self._strictEncodeArguments('cancelOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))', [order
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -2434,11 +1777,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('cancelOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})').inputs;
-            [order
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('cancelOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})').functions.cancelOrder.encode([order
+            const encodedData = self._strictEncodeArguments('cancelOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))', [order
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -2455,11 +1794,7 @@ export class ExchangeContract extends BaseContract {
             order: {makerAddress: string;takerAddress: string;feeRecipientAddress: string;senderAddress: string;makerAssetAmount: BigNumber;takerAssetAmount: BigNumber;makerFee: BigNumber;takerFee: BigNumber;expirationTimeSeconds: BigNumber;salt: BigNumber;makerAssetData: string;takerAssetData: string},
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('cancelOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})').inputs;
-            [order
-    ] = BaseContract._formatABIDataItemList(inputAbi, [order
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('cancelOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})').functions.cancelOrder.encode([order
+            const abiEncodedTransactionData = self._strictEncodeArguments('cancelOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))', [order
     ]);
             return abiEncodedTransactionData;
         },
@@ -2470,15 +1805,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'cancelOrder({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes})';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [order
-        ] = BaseContract._formatABIDataItemList(inputAbi, [order
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.cancelOrder;
-            const encodedData = ethersFunction.encode([order
+            const encodedData = self._strictEncodeArguments('cancelOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))', [order
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -2490,11 +1817,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'cancelOrder'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('cancelOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public orderEpoch = {
@@ -2506,18 +1834,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'orderEpoch(address,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0,
-        index_1
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0,
-        index_1
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0,
-        index_1
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.orderEpoch;
-            const encodedData = ethersFunction.encode([index_0,
+            const encodedData = self._strictEncodeArguments('orderEpoch(address,address)', [index_0,
         index_1
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -2530,11 +1847,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'orderEpoch'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('orderEpoch(address,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public ZRX_ASSET_DATA = {
@@ -2544,12 +1862,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'ZRX_ASSET_DATA()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.ZRX_ASSET_DATA;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('ZRX_ASSET_DATA()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -2560,11 +1873,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'ZRX_ASSET_DATA'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('ZRX_ASSET_DATA()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public marketSellOrdersNoThrow = {
@@ -2575,19 +1889,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('marketSellOrdersNoThrow(tuple[],uint256,bytes[])').inputs;
-            [orders,
-    takerAssetFillAmount,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmount,
-    signatures
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-    takerAssetFillAmount,
-    signatures
-    ]);
-            const encodedData = self._lookupEthersInterface('marketSellOrdersNoThrow(tuple[],uint256,bytes[])').functions.marketSellOrdersNoThrow.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketSellOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
     takerAssetFillAmount,
     signatures
     ]);
@@ -2615,15 +1917,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('marketSellOrdersNoThrow(tuple[],uint256,bytes[])').inputs;
-            [orders,
-    takerAssetFillAmount,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmount,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('marketSellOrdersNoThrow(tuple[],uint256,bytes[])').functions.marketSellOrdersNoThrow.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketSellOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
     takerAssetFillAmount,
     signatures
     ]);
@@ -2644,15 +1938,7 @@ export class ExchangeContract extends BaseContract {
             signatures: string[],
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('marketSellOrdersNoThrow(tuple[],uint256,bytes[])').inputs;
-            [orders,
-    takerAssetFillAmount,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    takerAssetFillAmount,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('marketSellOrdersNoThrow(tuple[],uint256,bytes[])').functions.marketSellOrdersNoThrow.encode([orders,
+            const abiEncodedTransactionData = self._strictEncodeArguments('marketSellOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
     takerAssetFillAmount,
     signatures
     ]);
@@ -2667,21 +1953,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'marketSellOrdersNoThrow(tuple[],uint256,bytes[])';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders,
-        takerAssetFillAmount,
-        signatures
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-        takerAssetFillAmount,
-        signatures
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-        takerAssetFillAmount,
-        signatures
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.marketSellOrdersNoThrow;
-            const encodedData = ethersFunction.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketSellOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
         takerAssetFillAmount,
         signatures
         ]);
@@ -2695,11 +1967,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'marketSellOrdersNoThrow'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('marketSellOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public EIP712_DOMAIN_HASH = {
@@ -2709,12 +1982,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'EIP712_DOMAIN_HASH()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.EIP712_DOMAIN_HASH;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('EIP712_DOMAIN_HASH()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -2725,11 +1993,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'EIP712_DOMAIN_HASH'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('EIP712_DOMAIN_HASH()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public marketBuyOrders = {
@@ -2740,19 +2009,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('marketBuyOrders(tuple[],uint256,bytes[])').inputs;
-            [orders,
-    makerAssetFillAmount,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    makerAssetFillAmount,
-    signatures
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-    makerAssetFillAmount,
-    signatures
-    ]);
-            const encodedData = self._lookupEthersInterface('marketBuyOrders(tuple[],uint256,bytes[])').functions.marketBuyOrders.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketBuyOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
     makerAssetFillAmount,
     signatures
     ]);
@@ -2780,15 +2037,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('marketBuyOrders(tuple[],uint256,bytes[])').inputs;
-            [orders,
-    makerAssetFillAmount,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    makerAssetFillAmount,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('marketBuyOrders(tuple[],uint256,bytes[])').functions.marketBuyOrders.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketBuyOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
     makerAssetFillAmount,
     signatures
     ]);
@@ -2809,15 +2058,7 @@ export class ExchangeContract extends BaseContract {
             signatures: string[],
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('marketBuyOrders(tuple[],uint256,bytes[])').inputs;
-            [orders,
-    makerAssetFillAmount,
-    signatures
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    makerAssetFillAmount,
-    signatures
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('marketBuyOrders(tuple[],uint256,bytes[])').functions.marketBuyOrders.encode([orders,
+            const abiEncodedTransactionData = self._strictEncodeArguments('marketBuyOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
     makerAssetFillAmount,
     signatures
     ]);
@@ -2832,21 +2073,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'marketBuyOrders(tuple[],uint256,bytes[])';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders,
-        makerAssetFillAmount,
-        signatures
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-        makerAssetFillAmount,
-        signatures
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-        makerAssetFillAmount,
-        signatures
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.marketBuyOrders;
-            const encodedData = ethersFunction.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketBuyOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])', [orders,
         makerAssetFillAmount,
         signatures
         ]);
@@ -2860,11 +2087,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'marketBuyOrders'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('marketBuyOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public currentContextAddress = {
@@ -2874,12 +2102,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'currentContextAddress()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.currentContextAddress;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('currentContextAddress()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -2890,11 +2113,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'currentContextAddress'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('currentContextAddress()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transferOwnership = {
@@ -2903,13 +2127,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [newOwner
-    ]);
-            const encodedData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -2931,11 +2149,7 @@ export class ExchangeContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -2952,11 +2166,7 @@ export class ExchangeContract extends BaseContract {
             newOwner: string,
         ): string {
             const self = this as any as ExchangeContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             return abiEncodedTransactionData;
         },
@@ -2967,15 +2177,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'transferOwnership(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [newOwner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [newOwner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transferOwnership;
-            const encodedData = ethersFunction.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -2987,11 +2189,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transferOwnership'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('transferOwnership(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public VERSION = {
@@ -3001,12 +2204,7 @@ export class ExchangeContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ExchangeContract;
-            const functionSignature = 'VERSION()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.VERSION;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('VERSION()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -3017,11 +2215,12 @@ export class ExchangeContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'VERSION'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('VERSION()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -3074,7 +2273,7 @@ export class ExchangeContract extends BaseContract {
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('Exchange', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/forwarder.ts b/packages/abi-gen-wrappers/src/generated-wrappers/forwarder.ts
index 8a88431b3..530320792 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/forwarder.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/forwarder.ts
@@ -27,31 +27,7 @@ export class ForwarderContract extends BaseContract {
             txData: Partial<TxDataPayable> = {},
         ): Promise<string> {
             const self = this as any as ForwarderContract;
-            const inputAbi = self._lookupAbi('marketBuyOrdersWithEth(tuple[],uint256,bytes[],tuple[],bytes[],uint256,address)').inputs;
-            [orders,
-    makerAssetFillAmount,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    makerAssetFillAmount,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-    makerAssetFillAmount,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ]);
-            const encodedData = self._lookupEthersInterface('marketBuyOrdersWithEth(tuple[],uint256,bytes[],tuple[],bytes[],uint256,address)').functions.marketBuyOrdersWithEth.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketBuyOrdersWithEth((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[],(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],uint256,address)', [orders,
     makerAssetFillAmount,
     signatures,
     feeOrders,
@@ -91,23 +67,7 @@ export class ForwarderContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ForwarderContract;
-            const inputAbi = self._lookupAbi('marketBuyOrdersWithEth(tuple[],uint256,bytes[],tuple[],bytes[],uint256,address)').inputs;
-            [orders,
-    makerAssetFillAmount,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    makerAssetFillAmount,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('marketBuyOrdersWithEth(tuple[],uint256,bytes[],tuple[],bytes[],uint256,address)').functions.marketBuyOrdersWithEth.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketBuyOrdersWithEth((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[],(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],uint256,address)', [orders,
     makerAssetFillAmount,
     signatures,
     feeOrders,
@@ -136,23 +96,7 @@ export class ForwarderContract extends BaseContract {
             feeRecipient: string,
         ): string {
             const self = this as any as ForwarderContract;
-            const inputAbi = self._lookupAbi('marketBuyOrdersWithEth(tuple[],uint256,bytes[],tuple[],bytes[],uint256,address)').inputs;
-            [orders,
-    makerAssetFillAmount,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    makerAssetFillAmount,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('marketBuyOrdersWithEth(tuple[],uint256,bytes[],tuple[],bytes[],uint256,address)').functions.marketBuyOrdersWithEth.encode([orders,
+            const abiEncodedTransactionData = self._strictEncodeArguments('marketBuyOrdersWithEth((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[],(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],uint256,address)', [orders,
     makerAssetFillAmount,
     signatures,
     feeOrders,
@@ -175,33 +119,7 @@ export class ForwarderContract extends BaseContract {
         ): Promise<[{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}, {makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}]
         > {
             const self = this as any as ForwarderContract;
-            const functionSignature = 'marketBuyOrdersWithEth(tuple[],uint256,bytes[],tuple[],bytes[],uint256,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders,
-        makerAssetFillAmount,
-        signatures,
-        feeOrders,
-        feeSignatures,
-        feePercentage,
-        feeRecipient
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-        makerAssetFillAmount,
-        signatures,
-        feeOrders,
-        feeSignatures,
-        feePercentage,
-        feeRecipient
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-        makerAssetFillAmount,
-        signatures,
-        feeOrders,
-        feeSignatures,
-        feePercentage,
-        feeRecipient
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.marketBuyOrdersWithEth;
-            const encodedData = ethersFunction.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketBuyOrdersWithEth((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[],(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],uint256,address)', [orders,
         makerAssetFillAmount,
         signatures,
         feeOrders,
@@ -219,11 +137,12 @@ export class ForwarderContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'marketBuyOrdersWithEth'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('marketBuyOrdersWithEth((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[],(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],uint256,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<[{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}, {makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public withdrawAsset = {
@@ -233,16 +152,7 @@ export class ForwarderContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ForwarderContract;
-            const inputAbi = self._lookupAbi('withdrawAsset(bytes,uint256)').inputs;
-            [assetData,
-    amount
-    ] = BaseContract._formatABIDataItemList(inputAbi, [assetData,
-    amount
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [assetData,
-    amount
-    ]);
-            const encodedData = self._lookupEthersInterface('withdrawAsset(bytes,uint256)').functions.withdrawAsset.encode([assetData,
+            const encodedData = self._strictEncodeArguments('withdrawAsset(bytes,uint256)', [assetData,
     amount
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -267,13 +177,7 @@ export class ForwarderContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ForwarderContract;
-            const inputAbi = self._lookupAbi('withdrawAsset(bytes,uint256)').inputs;
-            [assetData,
-    amount
-    ] = BaseContract._formatABIDataItemList(inputAbi, [assetData,
-    amount
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('withdrawAsset(bytes,uint256)').functions.withdrawAsset.encode([assetData,
+            const encodedData = self._strictEncodeArguments('withdrawAsset(bytes,uint256)', [assetData,
     amount
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -292,13 +196,7 @@ export class ForwarderContract extends BaseContract {
             amount: BigNumber,
         ): string {
             const self = this as any as ForwarderContract;
-            const inputAbi = self._lookupAbi('withdrawAsset(bytes,uint256)').inputs;
-            [assetData,
-    amount
-    ] = BaseContract._formatABIDataItemList(inputAbi, [assetData,
-    amount
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('withdrawAsset(bytes,uint256)').functions.withdrawAsset.encode([assetData,
+            const abiEncodedTransactionData = self._strictEncodeArguments('withdrawAsset(bytes,uint256)', [assetData,
     amount
     ]);
             return abiEncodedTransactionData;
@@ -311,18 +209,7 @@ export class ForwarderContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ForwarderContract;
-            const functionSignature = 'withdrawAsset(bytes,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [assetData,
-        amount
-        ] = BaseContract._formatABIDataItemList(inputAbi, [assetData,
-        amount
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [assetData,
-        amount
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.withdrawAsset;
-            const encodedData = ethersFunction.encode([assetData,
+            const encodedData = self._strictEncodeArguments('withdrawAsset(bytes,uint256)', [assetData,
         amount
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -335,11 +222,12 @@ export class ForwarderContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'withdrawAsset'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('withdrawAsset(bytes,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public owner = {
@@ -349,12 +237,7 @@ export class ForwarderContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ForwarderContract;
-            const functionSignature = 'owner()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.owner;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('owner()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -365,11 +248,12 @@ export class ForwarderContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'owner'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('owner()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public marketSellOrdersWithEth = {
@@ -383,28 +267,7 @@ export class ForwarderContract extends BaseContract {
             txData: Partial<TxDataPayable> = {},
         ): Promise<string> {
             const self = this as any as ForwarderContract;
-            const inputAbi = self._lookupAbi('marketSellOrdersWithEth(tuple[],bytes[],tuple[],bytes[],uint256,address)').inputs;
-            [orders,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ]);
-            const encodedData = self._lookupEthersInterface('marketSellOrdersWithEth(tuple[],bytes[],tuple[],bytes[],uint256,address)').functions.marketSellOrdersWithEth.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketSellOrdersWithEth((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],uint256,address)', [orders,
     signatures,
     feeOrders,
     feeSignatures,
@@ -441,21 +304,7 @@ export class ForwarderContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ForwarderContract;
-            const inputAbi = self._lookupAbi('marketSellOrdersWithEth(tuple[],bytes[],tuple[],bytes[],uint256,address)').inputs;
-            [orders,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('marketSellOrdersWithEth(tuple[],bytes[],tuple[],bytes[],uint256,address)').functions.marketSellOrdersWithEth.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketSellOrdersWithEth((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],uint256,address)', [orders,
     signatures,
     feeOrders,
     feeSignatures,
@@ -482,21 +331,7 @@ export class ForwarderContract extends BaseContract {
             feeRecipient: string,
         ): string {
             const self = this as any as ForwarderContract;
-            const inputAbi = self._lookupAbi('marketSellOrdersWithEth(tuple[],bytes[],tuple[],bytes[],uint256,address)').inputs;
-            [orders,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-    signatures,
-    feeOrders,
-    feeSignatures,
-    feePercentage,
-    feeRecipient
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('marketSellOrdersWithEth(tuple[],bytes[],tuple[],bytes[],uint256,address)').functions.marketSellOrdersWithEth.encode([orders,
+            const abiEncodedTransactionData = self._strictEncodeArguments('marketSellOrdersWithEth((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],uint256,address)', [orders,
     signatures,
     feeOrders,
     feeSignatures,
@@ -517,30 +352,7 @@ export class ForwarderContract extends BaseContract {
         ): Promise<[{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}, {makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}]
         > {
             const self = this as any as ForwarderContract;
-            const functionSignature = 'marketSellOrdersWithEth(tuple[],bytes[],tuple[],bytes[],uint256,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders,
-        signatures,
-        feeOrders,
-        feeSignatures,
-        feePercentage,
-        feeRecipient
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-        signatures,
-        feeOrders,
-        feeSignatures,
-        feePercentage,
-        feeRecipient
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-        signatures,
-        feeOrders,
-        feeSignatures,
-        feePercentage,
-        feeRecipient
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.marketSellOrdersWithEth;
-            const encodedData = ethersFunction.encode([orders,
+            const encodedData = self._strictEncodeArguments('marketSellOrdersWithEth((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],uint256,address)', [orders,
         signatures,
         feeOrders,
         feeSignatures,
@@ -557,11 +369,12 @@ export class ForwarderContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'marketSellOrdersWithEth'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('marketSellOrdersWithEth((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],bytes[],uint256,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<[{makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}, {makerAssetFilledAmount: BigNumber;takerAssetFilledAmount: BigNumber;makerFeePaid: BigNumber;takerFeePaid: BigNumber}]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transferOwnership = {
@@ -570,13 +383,7 @@ export class ForwarderContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ForwarderContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [newOwner
-    ]);
-            const encodedData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -598,11 +405,7 @@ export class ForwarderContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ForwarderContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -619,11 +422,7 @@ export class ForwarderContract extends BaseContract {
             newOwner: string,
         ): string {
             const self = this as any as ForwarderContract;
-            const inputAbi = self._lookupAbi('transferOwnership(address)').inputs;
-            [newOwner
-    ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transferOwnership(address)').functions.transferOwnership.encode([newOwner
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
     ]);
             return abiEncodedTransactionData;
         },
@@ -634,15 +433,7 @@ export class ForwarderContract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as ForwarderContract;
-            const functionSignature = 'transferOwnership(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [newOwner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [newOwner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [newOwner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transferOwnership;
-            const encodedData = ethersFunction.encode([newOwner
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -654,11 +445,12 @@ export class ForwarderContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transferOwnership'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('transferOwnership(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -725,7 +517,7 @@ _wethAssetData
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('Forwarder', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/i_validator.ts b/packages/abi-gen-wrappers/src/generated-wrappers/i_validator.ts
index 5f38ffdac..6cb9f64fb 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/i_validator.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/i_validator.ts
@@ -25,21 +25,7 @@ export class IValidatorContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as IValidatorContract;
-            const functionSignature = 'isValidSignature(bytes32,address,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [hash,
-        signerAddress,
-        signature
-        ] = BaseContract._formatABIDataItemList(inputAbi, [hash,
-        signerAddress,
-        signature
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [hash,
-        signerAddress,
-        signature
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.isValidSignature;
-            const encodedData = ethersFunction.encode([hash,
+            const encodedData = self._strictEncodeArguments('isValidSignature(bytes32,address,bytes)', [hash,
         signerAddress,
         signature
         ]);
@@ -53,11 +39,12 @@ export class IValidatorContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'isValidSignature'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('isValidSignature(bytes32,address,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -103,7 +90,7 @@ export class IValidatorContract extends BaseContract {
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('IValidator', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/i_wallet.ts b/packages/abi-gen-wrappers/src/generated-wrappers/i_wallet.ts
index 5fa6f1577..2185c7999 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/i_wallet.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/i_wallet.ts
@@ -24,18 +24,7 @@ export class IWalletContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as IWalletContract;
-            const functionSignature = 'isValidSignature(bytes32,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [hash,
-        signature
-        ] = BaseContract._formatABIDataItemList(inputAbi, [hash,
-        signature
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [hash,
-        signature
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.isValidSignature;
-            const encodedData = ethersFunction.encode([hash,
+            const encodedData = self._strictEncodeArguments('isValidSignature(bytes32,bytes)', [hash,
         signature
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -48,11 +37,12 @@ export class IWalletContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'isValidSignature'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('isValidSignature(bytes32,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -98,7 +88,7 @@ export class IWalletContract extends BaseContract {
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('IWallet', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/multi_asset_proxy.ts b/packages/abi-gen-wrappers/src/generated-wrappers/multi_asset_proxy.ts
new file mode 100644
index 000000000..418cab6a0
--- /dev/null
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/multi_asset_proxy.ts
@@ -0,0 +1,669 @@
+// tslint:disable:no-consecutive-blank-lines ordered-imports align trailing-comma whitespace class-name
+// tslint:disable:no-unused-variable
+// tslint:disable:no-unbound-method
+import { BaseContract } from '@0x/base-contract';
+import { BlockParam, BlockParamLiteral, CallData, ContractAbi, ContractArtifact, DecodedLogArgs, MethodAbi, Provider, TxData, TxDataPayable } from 'ethereum-types';
+import { BigNumber, classUtils, logUtils } from '@0x/utils';
+import { SimpleContractArtifact } from '@0x/types';
+import { Web3Wrapper } from '@0x/web3-wrapper';
+import * as ethers from 'ethers';
+import * as _ from 'lodash';
+// tslint:enable:no-unused-variable
+
+export type MultiAssetProxyEventArgs =
+    | MultiAssetProxyAuthorizedAddressAddedEventArgs
+    | MultiAssetProxyAuthorizedAddressRemovedEventArgs
+    | MultiAssetProxyAssetProxyRegisteredEventArgs;
+
+export enum MultiAssetProxyEvents {
+    AuthorizedAddressAdded = 'AuthorizedAddressAdded',
+    AuthorizedAddressRemoved = 'AuthorizedAddressRemoved',
+    AssetProxyRegistered = 'AssetProxyRegistered',
+}
+
+export interface MultiAssetProxyAuthorizedAddressAddedEventArgs extends DecodedLogArgs {
+    target: string;
+    caller: string;
+}
+
+export interface MultiAssetProxyAuthorizedAddressRemovedEventArgs extends DecodedLogArgs {
+    target: string;
+    caller: string;
+}
+
+export interface MultiAssetProxyAssetProxyRegisteredEventArgs extends DecodedLogArgs {
+    id: string;
+    assetProxy: string;
+}
+
+
+/* istanbul ignore next */
+// tslint:disable:no-parameter-reassignment
+// tslint:disable-next-line:class-name
+export class MultiAssetProxyContract extends BaseContract {
+    public assetProxies = {
+        async callAsync(
+            index_0: string,
+            callData: Partial<CallData> = {},
+            defaultBlock?: BlockParam,
+        ): Promise<string
+        > {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('assetProxies(bytes4)', [index_0
+        ]);
+            const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...callData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
+            BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
+            const abiEncoder = self._lookupAbiEncoder('assetProxies(bytes4)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
+        },
+    };
+    public addAuthorizedAddress = {
+        async sendTransactionAsync(
+            target: string,
+            txData: Partial<TxData> = {},
+        ): Promise<string> {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('addAuthorizedAddress(address)', [target
+    ]);
+            const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...txData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+                self.addAuthorizedAddress.estimateGasAsync.bind(
+                    self,
+                    target
+                ),
+            );
+            const txHash = await self._web3Wrapper.sendTransactionAsync(txDataWithDefaults);
+            return txHash;
+        },
+        async estimateGasAsync(
+            target: string,
+            txData: Partial<TxData> = {},
+        ): Promise<number> {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('addAuthorizedAddress(address)', [target
+    ]);
+            const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...txData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const gas = await self._web3Wrapper.estimateGasAsync(txDataWithDefaults);
+            return gas;
+        },
+        getABIEncodedTransactionData(
+            target: string,
+        ): string {
+            const self = this as any as MultiAssetProxyContract;
+            const abiEncodedTransactionData = self._strictEncodeArguments('addAuthorizedAddress(address)', [target
+    ]);
+            return abiEncodedTransactionData;
+        },
+        async callAsync(
+            target: string,
+            callData: Partial<CallData> = {},
+            defaultBlock?: BlockParam,
+        ): Promise<void
+        > {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('addAuthorizedAddress(address)', [target
+        ]);
+            const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...callData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
+            BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
+            const abiEncoder = self._lookupAbiEncoder('addAuthorizedAddress(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
+        },
+    };
+    public authorities = {
+        async callAsync(
+            index_0: BigNumber,
+            callData: Partial<CallData> = {},
+            defaultBlock?: BlockParam,
+        ): Promise<string
+        > {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('authorities(uint256)', [index_0
+        ]);
+            const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...callData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
+            BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
+            const abiEncoder = self._lookupAbiEncoder('authorities(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
+        },
+    };
+    public getAssetProxy = {
+        async callAsync(
+            assetProxyId: string,
+            callData: Partial<CallData> = {},
+            defaultBlock?: BlockParam,
+        ): Promise<string
+        > {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('getAssetProxy(bytes4)', [assetProxyId
+        ]);
+            const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...callData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
+            BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
+            const abiEncoder = self._lookupAbiEncoder('getAssetProxy(bytes4)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
+        },
+    };
+    public removeAuthorizedAddress = {
+        async sendTransactionAsync(
+            target: string,
+            txData: Partial<TxData> = {},
+        ): Promise<string> {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddress(address)', [target
+    ]);
+            const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...txData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+                self.removeAuthorizedAddress.estimateGasAsync.bind(
+                    self,
+                    target
+                ),
+            );
+            const txHash = await self._web3Wrapper.sendTransactionAsync(txDataWithDefaults);
+            return txHash;
+        },
+        async estimateGasAsync(
+            target: string,
+            txData: Partial<TxData> = {},
+        ): Promise<number> {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddress(address)', [target
+    ]);
+            const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...txData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const gas = await self._web3Wrapper.estimateGasAsync(txDataWithDefaults);
+            return gas;
+        },
+        getABIEncodedTransactionData(
+            target: string,
+        ): string {
+            const self = this as any as MultiAssetProxyContract;
+            const abiEncodedTransactionData = self._strictEncodeArguments('removeAuthorizedAddress(address)', [target
+    ]);
+            return abiEncodedTransactionData;
+        },
+        async callAsync(
+            target: string,
+            callData: Partial<CallData> = {},
+            defaultBlock?: BlockParam,
+        ): Promise<void
+        > {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddress(address)', [target
+        ]);
+            const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...callData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
+            BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
+            const abiEncoder = self._lookupAbiEncoder('removeAuthorizedAddress(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
+        },
+    };
+    public owner = {
+        async callAsync(
+            callData: Partial<CallData> = {},
+            defaultBlock?: BlockParam,
+        ): Promise<string
+        > {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('owner()', []);
+            const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...callData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
+            BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
+            const abiEncoder = self._lookupAbiEncoder('owner()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
+        },
+    };
+    public removeAuthorizedAddressAtIndex = {
+        async sendTransactionAsync(
+            target: string,
+            index: BigNumber,
+            txData: Partial<TxData> = {},
+        ): Promise<string> {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddressAtIndex(address,uint256)', [target,
+    index
+    ]);
+            const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...txData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+                self.removeAuthorizedAddressAtIndex.estimateGasAsync.bind(
+                    self,
+                    target,
+                    index
+                ),
+            );
+            const txHash = await self._web3Wrapper.sendTransactionAsync(txDataWithDefaults);
+            return txHash;
+        },
+        async estimateGasAsync(
+            target: string,
+            index: BigNumber,
+            txData: Partial<TxData> = {},
+        ): Promise<number> {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddressAtIndex(address,uint256)', [target,
+    index
+    ]);
+            const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...txData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const gas = await self._web3Wrapper.estimateGasAsync(txDataWithDefaults);
+            return gas;
+        },
+        getABIEncodedTransactionData(
+            target: string,
+            index: BigNumber,
+        ): string {
+            const self = this as any as MultiAssetProxyContract;
+            const abiEncodedTransactionData = self._strictEncodeArguments('removeAuthorizedAddressAtIndex(address,uint256)', [target,
+    index
+    ]);
+            return abiEncodedTransactionData;
+        },
+        async callAsync(
+            target: string,
+            index: BigNumber,
+            callData: Partial<CallData> = {},
+            defaultBlock?: BlockParam,
+        ): Promise<void
+        > {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('removeAuthorizedAddressAtIndex(address,uint256)', [target,
+        index
+        ]);
+            const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...callData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
+            BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
+            const abiEncoder = self._lookupAbiEncoder('removeAuthorizedAddressAtIndex(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
+        },
+    };
+    public getProxyId = {
+        async callAsync(
+            callData: Partial<CallData> = {},
+            defaultBlock?: BlockParam,
+        ): Promise<string
+        > {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('getProxyId()', []);
+            const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...callData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
+            BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
+            const abiEncoder = self._lookupAbiEncoder('getProxyId()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
+        },
+    };
+    public authorized = {
+        async callAsync(
+            index_0: string,
+            callData: Partial<CallData> = {},
+            defaultBlock?: BlockParam,
+        ): Promise<boolean
+        > {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('authorized(address)', [index_0
+        ]);
+            const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...callData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
+            BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
+            const abiEncoder = self._lookupAbiEncoder('authorized(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
+        },
+    };
+    public registerAssetProxy = {
+        async sendTransactionAsync(
+            assetProxy: string,
+            txData: Partial<TxData> = {},
+        ): Promise<string> {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('registerAssetProxy(address)', [assetProxy
+    ]);
+            const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...txData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+                self.registerAssetProxy.estimateGasAsync.bind(
+                    self,
+                    assetProxy
+                ),
+            );
+            const txHash = await self._web3Wrapper.sendTransactionAsync(txDataWithDefaults);
+            return txHash;
+        },
+        async estimateGasAsync(
+            assetProxy: string,
+            txData: Partial<TxData> = {},
+        ): Promise<number> {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('registerAssetProxy(address)', [assetProxy
+    ]);
+            const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...txData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const gas = await self._web3Wrapper.estimateGasAsync(txDataWithDefaults);
+            return gas;
+        },
+        getABIEncodedTransactionData(
+            assetProxy: string,
+        ): string {
+            const self = this as any as MultiAssetProxyContract;
+            const abiEncodedTransactionData = self._strictEncodeArguments('registerAssetProxy(address)', [assetProxy
+    ]);
+            return abiEncodedTransactionData;
+        },
+        async callAsync(
+            assetProxy: string,
+            callData: Partial<CallData> = {},
+            defaultBlock?: BlockParam,
+        ): Promise<void
+        > {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('registerAssetProxy(address)', [assetProxy
+        ]);
+            const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...callData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
+            BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
+            const abiEncoder = self._lookupAbiEncoder('registerAssetProxy(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
+        },
+    };
+    public getAuthorizedAddresses = {
+        async callAsync(
+            callData: Partial<CallData> = {},
+            defaultBlock?: BlockParam,
+        ): Promise<string[]
+        > {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('getAuthorizedAddresses()', []);
+            const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...callData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
+            BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
+            const abiEncoder = self._lookupAbiEncoder('getAuthorizedAddresses()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string[]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
+        },
+    };
+    public transferOwnership = {
+        async sendTransactionAsync(
+            newOwner: string,
+            txData: Partial<TxData> = {},
+        ): Promise<string> {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
+    ]);
+            const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...txData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+                self.transferOwnership.estimateGasAsync.bind(
+                    self,
+                    newOwner
+                ),
+            );
+            const txHash = await self._web3Wrapper.sendTransactionAsync(txDataWithDefaults);
+            return txHash;
+        },
+        async estimateGasAsync(
+            newOwner: string,
+            txData: Partial<TxData> = {},
+        ): Promise<number> {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
+    ]);
+            const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...txData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const gas = await self._web3Wrapper.estimateGasAsync(txDataWithDefaults);
+            return gas;
+        },
+        getABIEncodedTransactionData(
+            newOwner: string,
+        ): string {
+            const self = this as any as MultiAssetProxyContract;
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
+    ]);
+            return abiEncodedTransactionData;
+        },
+        async callAsync(
+            newOwner: string,
+            callData: Partial<CallData> = {},
+            defaultBlock?: BlockParam,
+        ): Promise<void
+        > {
+            const self = this as any as MultiAssetProxyContract;
+            const encodedData = self._strictEncodeArguments('transferOwnership(address)', [newOwner
+        ]);
+            const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+                {
+                    to: self.address,
+                    ...callData,
+                    data: encodedData,
+                },
+                self._web3Wrapper.getContractDefaults(),
+            );
+            const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
+            BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
+            const abiEncoder = self._lookupAbiEncoder('transferOwnership(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
+        },
+    };
+    public static async deployFrom0xArtifactAsync(
+        artifact: ContractArtifact | SimpleContractArtifact,
+        provider: Provider,
+        txDefaults: Partial<TxData>,
+    ): Promise<MultiAssetProxyContract> {
+        if (_.isUndefined(artifact.compilerOutput)) {
+            throw new Error('Compiler output not found in the artifact file');
+        }
+        const bytecode = artifact.compilerOutput.evm.bytecode.object;
+        const abi = artifact.compilerOutput.abi;
+        return MultiAssetProxyContract.deployAsync(bytecode, abi, provider, txDefaults, );
+    }
+    public static async deployAsync(
+        bytecode: string,
+        abi: ContractAbi,
+        provider: Provider,
+        txDefaults: Partial<TxData>,
+    ): Promise<MultiAssetProxyContract> {
+        const constructorAbi = BaseContract._lookupConstructorAbi(abi);
+        [] = BaseContract._formatABIDataItemList(
+            constructorAbi.inputs,
+            [],
+            BaseContract._bigNumberToString,
+        );
+        const iface = new ethers.utils.Interface(abi);
+        const deployInfo = iface.deployFunction;
+        const txData = deployInfo.encode(bytecode, []);
+        const web3Wrapper = new Web3Wrapper(provider);
+        const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
+            {data: txData},
+            txDefaults,
+            web3Wrapper.estimateGasAsync.bind(web3Wrapper),
+        );
+        const txHash = await web3Wrapper.sendTransactionAsync(txDataWithDefaults);
+        logUtils.log(`transactionHash: ${txHash}`);
+        const txReceipt = await web3Wrapper.awaitTransactionSuccessAsync(txHash);
+        logUtils.log(`MultiAssetProxy successfully deployed at ${txReceipt.contractAddress}`);
+        const contractInstance = new MultiAssetProxyContract(abi, txReceipt.contractAddress as string, provider, txDefaults);
+        contractInstance.constructorArgs = [];
+        return contractInstance;
+    }
+    constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
+        super('MultiAssetProxy', abi, address, provider, txDefaults);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+    }
+} // tslint:disable:max-file-line-count
+// tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/order_validator.ts b/packages/abi-gen-wrappers/src/generated-wrappers/order_validator.ts
index ce47b76fc..366b207ad 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/order_validator.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/order_validator.ts
@@ -24,18 +24,7 @@ export class OrderValidatorContract extends BaseContract {
         ): Promise<[{orderStatus: number;orderHash: string;orderTakerAssetFilledAmount: BigNumber}, {makerBalance: BigNumber;makerAllowance: BigNumber;takerBalance: BigNumber;takerAllowance: BigNumber;makerZrxBalance: BigNumber;makerZrxAllowance: BigNumber;takerZrxBalance: BigNumber;takerZrxAllowance: BigNumber}]
         > {
             const self = this as any as OrderValidatorContract;
-            const functionSignature = 'getOrderAndTraderInfo({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [order,
-        takerAddress
-        ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-        takerAddress
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order,
-        takerAddress
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getOrderAndTraderInfo;
-            const encodedData = ethersFunction.encode([order,
+            const encodedData = self._strictEncodeArguments('getOrderAndTraderInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),address)', [order,
         takerAddress
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -48,11 +37,12 @@ export class OrderValidatorContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getOrderAndTraderInfo'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('getOrderAndTraderInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<[{orderStatus: number;orderHash: string;orderTakerAssetFilledAmount: BigNumber}, {makerBalance: BigNumber;makerAllowance: BigNumber;takerBalance: BigNumber;takerAllowance: BigNumber;makerZrxBalance: BigNumber;makerZrxAllowance: BigNumber;takerZrxBalance: BigNumber;takerZrxAllowance: BigNumber}]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getBalanceAndAllowance = {
@@ -64,18 +54,7 @@ export class OrderValidatorContract extends BaseContract {
         ): Promise<[BigNumber, BigNumber]
         > {
             const self = this as any as OrderValidatorContract;
-            const functionSignature = 'getBalanceAndAllowance(address,bytes)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [target,
-        assetData
-        ] = BaseContract._formatABIDataItemList(inputAbi, [target,
-        assetData
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target,
-        assetData
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getBalanceAndAllowance;
-            const encodedData = ethersFunction.encode([target,
+            const encodedData = self._strictEncodeArguments('getBalanceAndAllowance(address,bytes)', [target,
         assetData
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -88,11 +67,12 @@ export class OrderValidatorContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getBalanceAndAllowance'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('getBalanceAndAllowance(address,bytes)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<[BigNumber, BigNumber]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getOrdersAndTradersInfo = {
@@ -104,18 +84,7 @@ export class OrderValidatorContract extends BaseContract {
         ): Promise<[Array<{orderStatus: number;orderHash: string;orderTakerAssetFilledAmount: BigNumber}>, Array<{makerBalance: BigNumber;makerAllowance: BigNumber;takerBalance: BigNumber;takerAllowance: BigNumber;makerZrxBalance: BigNumber;makerZrxAllowance: BigNumber;takerZrxBalance: BigNumber;takerZrxAllowance: BigNumber}>]
         > {
             const self = this as any as OrderValidatorContract;
-            const functionSignature = 'getOrdersAndTradersInfo(tuple[],address[])';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders,
-        takerAddresses
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-        takerAddresses
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-        takerAddresses
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getOrdersAndTradersInfo;
-            const encodedData = ethersFunction.encode([orders,
+            const encodedData = self._strictEncodeArguments('getOrdersAndTradersInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],address[])', [orders,
         takerAddresses
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -128,11 +97,12 @@ export class OrderValidatorContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getOrdersAndTradersInfo'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('getOrdersAndTradersInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],address[])');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<[Array<{orderStatus: number;orderHash: string;orderTakerAssetFilledAmount: BigNumber}>, Array<{makerBalance: BigNumber;makerAllowance: BigNumber;takerBalance: BigNumber;takerAllowance: BigNumber;makerZrxBalance: BigNumber;makerZrxAllowance: BigNumber;takerZrxBalance: BigNumber;takerZrxAllowance: BigNumber}>]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getTradersInfo = {
@@ -144,18 +114,7 @@ export class OrderValidatorContract extends BaseContract {
         ): Promise<Array<{makerBalance: BigNumber;makerAllowance: BigNumber;takerBalance: BigNumber;takerAllowance: BigNumber;makerZrxBalance: BigNumber;makerZrxAllowance: BigNumber;takerZrxBalance: BigNumber;takerZrxAllowance: BigNumber}>
         > {
             const self = this as any as OrderValidatorContract;
-            const functionSignature = 'getTradersInfo(tuple[],address[])';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [orders,
-        takerAddresses
-        ] = BaseContract._formatABIDataItemList(inputAbi, [orders,
-        takerAddresses
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [orders,
-        takerAddresses
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getTradersInfo;
-            const encodedData = ethersFunction.encode([orders,
+            const encodedData = self._strictEncodeArguments('getTradersInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],address[])', [orders,
         takerAddresses
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -168,11 +127,12 @@ export class OrderValidatorContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getTradersInfo'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getTradersInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],address[])');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<Array<{makerBalance: BigNumber;makerAllowance: BigNumber;takerBalance: BigNumber;takerAllowance: BigNumber;makerZrxBalance: BigNumber;makerZrxAllowance: BigNumber;takerZrxBalance: BigNumber;takerZrxAllowance: BigNumber}>
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getERC721TokenOwner = {
@@ -184,18 +144,7 @@ export class OrderValidatorContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as OrderValidatorContract;
-            const functionSignature = 'getERC721TokenOwner(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [token,
-        tokenId
-        ] = BaseContract._formatABIDataItemList(inputAbi, [token,
-        tokenId
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [token,
-        tokenId
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getERC721TokenOwner;
-            const encodedData = ethersFunction.encode([token,
+            const encodedData = self._strictEncodeArguments('getERC721TokenOwner(address,uint256)', [token,
         tokenId
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -208,11 +157,12 @@ export class OrderValidatorContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getERC721TokenOwner'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getERC721TokenOwner(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getBalancesAndAllowances = {
@@ -224,18 +174,7 @@ export class OrderValidatorContract extends BaseContract {
         ): Promise<[BigNumber[], BigNumber[]]
         > {
             const self = this as any as OrderValidatorContract;
-            const functionSignature = 'getBalancesAndAllowances(address,bytes[])';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [target,
-        assetData
-        ] = BaseContract._formatABIDataItemList(inputAbi, [target,
-        assetData
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [target,
-        assetData
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getBalancesAndAllowances;
-            const encodedData = ethersFunction.encode([target,
+            const encodedData = self._strictEncodeArguments('getBalancesAndAllowances(address,bytes[])', [target,
         assetData
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -248,11 +187,12 @@ export class OrderValidatorContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getBalancesAndAllowances'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('getBalancesAndAllowances(address,bytes[])');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<[BigNumber[], BigNumber[]]
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public getTraderInfo = {
@@ -264,18 +204,7 @@ export class OrderValidatorContract extends BaseContract {
         ): Promise<{makerBalance: BigNumber;makerAllowance: BigNumber;takerBalance: BigNumber;takerAllowance: BigNumber;makerZrxBalance: BigNumber;makerZrxAllowance: BigNumber;takerZrxBalance: BigNumber;takerZrxAllowance: BigNumber}
         > {
             const self = this as any as OrderValidatorContract;
-            const functionSignature = 'getTraderInfo({address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes},address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [order,
-        takerAddress
-        ] = BaseContract._formatABIDataItemList(inputAbi, [order,
-        takerAddress
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [order,
-        takerAddress
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.getTraderInfo;
-            const encodedData = ethersFunction.encode([order,
+            const encodedData = self._strictEncodeArguments('getTraderInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),address)', [order,
         takerAddress
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -288,11 +217,12 @@ export class OrderValidatorContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'getTraderInfo'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('getTraderInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<{makerBalance: BigNumber;makerAllowance: BigNumber;takerBalance: BigNumber;takerAllowance: BigNumber;makerZrxBalance: BigNumber;makerZrxAllowance: BigNumber;takerZrxBalance: BigNumber;takerZrxAllowance: BigNumber}
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -352,7 +282,7 @@ _zrxAssetData
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('OrderValidator', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/weth9.ts b/packages/abi-gen-wrappers/src/generated-wrappers/weth9.ts
index 12ec55ae9..5af169e03 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/weth9.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/weth9.ts
@@ -57,12 +57,7 @@ export class WETH9Contract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as WETH9Contract;
-            const functionSignature = 'name()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.name;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('name()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -73,11 +68,12 @@ export class WETH9Contract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'name'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('name()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public approve = {
@@ -87,16 +83,7 @@ export class WETH9Contract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [guy,
-    wad
-    ] = BaseContract._formatABIDataItemList(inputAbi, [guy,
-    wad
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [guy,
-    wad
-    ]);
-            const encodedData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([guy,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [guy,
     wad
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -121,13 +108,7 @@ export class WETH9Contract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [guy,
-    wad
-    ] = BaseContract._formatABIDataItemList(inputAbi, [guy,
-    wad
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([guy,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [guy,
     wad
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -146,13 +127,7 @@ export class WETH9Contract extends BaseContract {
             wad: BigNumber,
         ): string {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [guy,
-    wad
-    ] = BaseContract._formatABIDataItemList(inputAbi, [guy,
-    wad
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([guy,
+            const abiEncodedTransactionData = self._strictEncodeArguments('approve(address,uint256)', [guy,
     wad
     ]);
             return abiEncodedTransactionData;
@@ -165,18 +140,7 @@ export class WETH9Contract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as WETH9Contract;
-            const functionSignature = 'approve(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [guy,
-        wad
-        ] = BaseContract._formatABIDataItemList(inputAbi, [guy,
-        wad
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [guy,
-        wad
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.approve;
-            const encodedData = ethersFunction.encode([guy,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [guy,
         wad
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -189,11 +153,12 @@ export class WETH9Contract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'approve'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('approve(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public totalSupply = {
@@ -203,12 +168,7 @@ export class WETH9Contract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as WETH9Contract;
-            const functionSignature = 'totalSupply()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.totalSupply;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('totalSupply()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -219,11 +179,12 @@ export class WETH9Contract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'totalSupply'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('totalSupply()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transferFrom = {
@@ -234,19 +195,7 @@ export class WETH9Contract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [src,
-    dst,
-    wad
-    ] = BaseContract._formatABIDataItemList(inputAbi, [src,
-    dst,
-    wad
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [src,
-    dst,
-    wad
-    ]);
-            const encodedData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([src,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [src,
     dst,
     wad
     ]);
@@ -274,15 +223,7 @@ export class WETH9Contract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [src,
-    dst,
-    wad
-    ] = BaseContract._formatABIDataItemList(inputAbi, [src,
-    dst,
-    wad
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([src,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [src,
     dst,
     wad
     ]);
@@ -303,15 +244,7 @@ export class WETH9Contract extends BaseContract {
             wad: BigNumber,
         ): string {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [src,
-    dst,
-    wad
-    ] = BaseContract._formatABIDataItemList(inputAbi, [src,
-    dst,
-    wad
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([src,
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [src,
     dst,
     wad
     ]);
@@ -326,21 +259,7 @@ export class WETH9Contract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as WETH9Contract;
-            const functionSignature = 'transferFrom(address,address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [src,
-        dst,
-        wad
-        ] = BaseContract._formatABIDataItemList(inputAbi, [src,
-        dst,
-        wad
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [src,
-        dst,
-        wad
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transferFrom;
-            const encodedData = ethersFunction.encode([src,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [src,
         dst,
         wad
         ]);
@@ -354,11 +273,12 @@ export class WETH9Contract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transferFrom'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('transferFrom(address,address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public withdraw = {
@@ -367,13 +287,7 @@ export class WETH9Contract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('withdraw(uint256)').inputs;
-            [wad
-    ] = BaseContract._formatABIDataItemList(inputAbi, [wad
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [wad
-    ]);
-            const encodedData = self._lookupEthersInterface('withdraw(uint256)').functions.withdraw.encode([wad
+            const encodedData = self._strictEncodeArguments('withdraw(uint256)', [wad
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -395,11 +309,7 @@ export class WETH9Contract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('withdraw(uint256)').inputs;
-            [wad
-    ] = BaseContract._formatABIDataItemList(inputAbi, [wad
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('withdraw(uint256)').functions.withdraw.encode([wad
+            const encodedData = self._strictEncodeArguments('withdraw(uint256)', [wad
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -416,11 +326,7 @@ export class WETH9Contract extends BaseContract {
             wad: BigNumber,
         ): string {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('withdraw(uint256)').inputs;
-            [wad
-    ] = BaseContract._formatABIDataItemList(inputAbi, [wad
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('withdraw(uint256)').functions.withdraw.encode([wad
+            const abiEncodedTransactionData = self._strictEncodeArguments('withdraw(uint256)', [wad
     ]);
             return abiEncodedTransactionData;
         },
@@ -431,15 +337,7 @@ export class WETH9Contract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as WETH9Contract;
-            const functionSignature = 'withdraw(uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [wad
-        ] = BaseContract._formatABIDataItemList(inputAbi, [wad
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [wad
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.withdraw;
-            const encodedData = ethersFunction.encode([wad
+            const encodedData = self._strictEncodeArguments('withdraw(uint256)', [wad
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -451,11 +349,12 @@ export class WETH9Contract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'withdraw'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('withdraw(uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public decimals = {
@@ -465,12 +364,7 @@ export class WETH9Contract extends BaseContract {
         ): Promise<number
         > {
             const self = this as any as WETH9Contract;
-            const functionSignature = 'decimals()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.decimals;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('decimals()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -481,11 +375,12 @@ export class WETH9Contract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'decimals'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('decimals()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<number
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public balanceOf = {
@@ -496,15 +391,7 @@ export class WETH9Contract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as WETH9Contract;
-            const functionSignature = 'balanceOf(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.balanceOf;
-            const encodedData = ethersFunction.encode([index_0
+            const encodedData = self._strictEncodeArguments('balanceOf(address)', [index_0
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -516,11 +403,12 @@ export class WETH9Contract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'balanceOf'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('balanceOf(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public symbol = {
@@ -530,12 +418,7 @@ export class WETH9Contract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as WETH9Contract;
-            const functionSignature = 'symbol()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.symbol;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('symbol()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -546,11 +429,12 @@ export class WETH9Contract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'symbol'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('symbol()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transfer = {
@@ -560,16 +444,7 @@ export class WETH9Contract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('transfer(address,uint256)').inputs;
-            [dst,
-    wad
-    ] = BaseContract._formatABIDataItemList(inputAbi, [dst,
-    wad
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [dst,
-    wad
-    ]);
-            const encodedData = self._lookupEthersInterface('transfer(address,uint256)').functions.transfer.encode([dst,
+            const encodedData = self._strictEncodeArguments('transfer(address,uint256)', [dst,
     wad
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -594,13 +469,7 @@ export class WETH9Contract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('transfer(address,uint256)').inputs;
-            [dst,
-    wad
-    ] = BaseContract._formatABIDataItemList(inputAbi, [dst,
-    wad
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transfer(address,uint256)').functions.transfer.encode([dst,
+            const encodedData = self._strictEncodeArguments('transfer(address,uint256)', [dst,
     wad
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -619,13 +488,7 @@ export class WETH9Contract extends BaseContract {
             wad: BigNumber,
         ): string {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('transfer(address,uint256)').inputs;
-            [dst,
-    wad
-    ] = BaseContract._formatABIDataItemList(inputAbi, [dst,
-    wad
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transfer(address,uint256)').functions.transfer.encode([dst,
+            const abiEncodedTransactionData = self._strictEncodeArguments('transfer(address,uint256)', [dst,
     wad
     ]);
             return abiEncodedTransactionData;
@@ -638,18 +501,7 @@ export class WETH9Contract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as WETH9Contract;
-            const functionSignature = 'transfer(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [dst,
-        wad
-        ] = BaseContract._formatABIDataItemList(inputAbi, [dst,
-        wad
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [dst,
-        wad
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transfer;
-            const encodedData = ethersFunction.encode([dst,
+            const encodedData = self._strictEncodeArguments('transfer(address,uint256)', [dst,
         wad
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -662,11 +514,12 @@ export class WETH9Contract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transfer'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('transfer(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public deposit = {
@@ -674,10 +527,7 @@ export class WETH9Contract extends BaseContract {
             txData: Partial<TxDataPayable> = {},
         ): Promise<string> {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('deposit()').inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const encodedData = self._lookupEthersInterface('deposit()').functions.deposit.encode([]);
+            const encodedData = self._strictEncodeArguments('deposit()', []);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -696,9 +546,7 @@ export class WETH9Contract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('deposit()').inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('deposit()').functions.deposit.encode([]);
+            const encodedData = self._strictEncodeArguments('deposit()', []);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -713,9 +561,7 @@ export class WETH9Contract extends BaseContract {
         getABIEncodedTransactionData(
         ): string {
             const self = this as any as WETH9Contract;
-            const inputAbi = self._lookupAbi('deposit()').inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('deposit()').functions.deposit.encode([]);
+            const abiEncodedTransactionData = self._strictEncodeArguments('deposit()', []);
             return abiEncodedTransactionData;
         },
         async callAsync(
@@ -724,12 +570,7 @@ export class WETH9Contract extends BaseContract {
         ): Promise<void
         > {
             const self = this as any as WETH9Contract;
-            const functionSignature = 'deposit()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.deposit;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('deposit()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -740,11 +581,12 @@ export class WETH9Contract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'deposit'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray;
+            const abiEncoder = self._lookupAbiEncoder('deposit()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<void
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public allowance = {
@@ -756,18 +598,7 @@ export class WETH9Contract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as WETH9Contract;
-            const functionSignature = 'allowance(address,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [index_0,
-        index_1
-        ] = BaseContract._formatABIDataItemList(inputAbi, [index_0,
-        index_1
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [index_0,
-        index_1
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.allowance;
-            const encodedData = ethersFunction.encode([index_0,
+            const encodedData = self._strictEncodeArguments('allowance(address,address)', [index_0,
         index_1
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -780,11 +611,12 @@ export class WETH9Contract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'allowance'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('allowance(address,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -830,7 +662,7 @@ export class WETH9Contract extends BaseContract {
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('WETH9', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/generated-wrappers/zrx_token.ts b/packages/abi-gen-wrappers/src/generated-wrappers/zrx_token.ts
index 877ffd12d..4f5d7f4c5 100644
--- a/packages/abi-gen-wrappers/src/generated-wrappers/zrx_token.ts
+++ b/packages/abi-gen-wrappers/src/generated-wrappers/zrx_token.ts
@@ -43,12 +43,7 @@ export class ZRXTokenContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ZRXTokenContract;
-            const functionSignature = 'name()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.name;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('name()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -59,11 +54,12 @@ export class ZRXTokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'name'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('name()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public approve = {
@@ -73,16 +69,7 @@ export class ZRXTokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ZRXTokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_spender,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_spender,
-    _value
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_spender,
-    _value
-    ]);
-            const encodedData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_spender,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_spender,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -107,13 +94,7 @@ export class ZRXTokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ZRXTokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_spender,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_spender,
-    _value
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_spender,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_spender,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -132,13 +113,7 @@ export class ZRXTokenContract extends BaseContract {
             _value: BigNumber,
         ): string {
             const self = this as any as ZRXTokenContract;
-            const inputAbi = self._lookupAbi('approve(address,uint256)').inputs;
-            [_spender,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_spender,
-    _value
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('approve(address,uint256)').functions.approve.encode([_spender,
+            const abiEncodedTransactionData = self._strictEncodeArguments('approve(address,uint256)', [_spender,
     _value
     ]);
             return abiEncodedTransactionData;
@@ -151,18 +126,7 @@ export class ZRXTokenContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ZRXTokenContract;
-            const functionSignature = 'approve(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_spender,
-        _value
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_spender,
-        _value
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_spender,
-        _value
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.approve;
-            const encodedData = ethersFunction.encode([_spender,
+            const encodedData = self._strictEncodeArguments('approve(address,uint256)', [_spender,
         _value
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -175,11 +139,12 @@ export class ZRXTokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'approve'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('approve(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public totalSupply = {
@@ -189,12 +154,7 @@ export class ZRXTokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as ZRXTokenContract;
-            const functionSignature = 'totalSupply()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.totalSupply;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('totalSupply()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -205,11 +165,12 @@ export class ZRXTokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'totalSupply'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('totalSupply()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transferFrom = {
@@ -220,19 +181,7 @@ export class ZRXTokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ZRXTokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _value
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-    _to,
-    _value
-    ]);
-            const encodedData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _value
     ]);
@@ -260,15 +209,7 @@ export class ZRXTokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ZRXTokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _value
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _value
     ]);
@@ -289,15 +230,7 @@ export class ZRXTokenContract extends BaseContract {
             _value: BigNumber,
         ): string {
             const self = this as any as ZRXTokenContract;
-            const inputAbi = self._lookupAbi('transferFrom(address,address,uint256)').inputs;
-            [_from,
-    _to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-    _to,
-    _value
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transferFrom(address,address,uint256)').functions.transferFrom.encode([_from,
+            const abiEncodedTransactionData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
     _to,
     _value
     ]);
@@ -312,21 +245,7 @@ export class ZRXTokenContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ZRXTokenContract;
-            const functionSignature = 'transferFrom(address,address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_from,
-        _to,
-        _value
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_from,
-        _to,
-        _value
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_from,
-        _to,
-        _value
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transferFrom;
-            const encodedData = ethersFunction.encode([_from,
+            const encodedData = self._strictEncodeArguments('transferFrom(address,address,uint256)', [_from,
         _to,
         _value
         ]);
@@ -340,11 +259,12 @@ export class ZRXTokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transferFrom'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('transferFrom(address,address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public decimals = {
@@ -354,12 +274,7 @@ export class ZRXTokenContract extends BaseContract {
         ): Promise<number
         > {
             const self = this as any as ZRXTokenContract;
-            const functionSignature = 'decimals()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.decimals;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('decimals()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -370,11 +285,12 @@ export class ZRXTokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'decimals'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('decimals()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<number
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public balanceOf = {
@@ -385,15 +301,7 @@ export class ZRXTokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as ZRXTokenContract;
-            const functionSignature = 'balanceOf(address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_owner
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_owner
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_owner
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.balanceOf;
-            const encodedData = ethersFunction.encode([_owner
+            const encodedData = self._strictEncodeArguments('balanceOf(address)', [_owner
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
@@ -405,11 +313,12 @@ export class ZRXTokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'balanceOf'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('balanceOf(address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public symbol = {
@@ -419,12 +328,7 @@ export class ZRXTokenContract extends BaseContract {
         ): Promise<string
         > {
             const self = this as any as ZRXTokenContract;
-            const functionSignature = 'symbol()';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [] = BaseContract._formatABIDataItemList(inputAbi, [], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, []);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.symbol;
-            const encodedData = ethersFunction.encode([]);
+            const encodedData = self._strictEncodeArguments('symbol()', []);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
                 {
                     to: self.address,
@@ -435,11 +339,12 @@ export class ZRXTokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'symbol'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('symbol()');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<string
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public transfer = {
@@ -449,16 +354,7 @@ export class ZRXTokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<string> {
             const self = this as any as ZRXTokenContract;
-            const inputAbi = self._lookupAbi('transfer(address,uint256)').inputs;
-            [_to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-    _value
-    ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_to,
-    _value
-    ]);
-            const encodedData = self._lookupEthersInterface('transfer(address,uint256)').functions.transfer.encode([_to,
+            const encodedData = self._strictEncodeArguments('transfer(address,uint256)', [_to,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -483,13 +379,7 @@ export class ZRXTokenContract extends BaseContract {
             txData: Partial<TxData> = {},
         ): Promise<number> {
             const self = this as any as ZRXTokenContract;
-            const inputAbi = self._lookupAbi('transfer(address,uint256)').inputs;
-            [_to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-    _value
-    ], BaseContract._bigNumberToString);
-            const encodedData = self._lookupEthersInterface('transfer(address,uint256)').functions.transfer.encode([_to,
+            const encodedData = self._strictEncodeArguments('transfer(address,uint256)', [_to,
     _value
     ]);
             const txDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -508,13 +398,7 @@ export class ZRXTokenContract extends BaseContract {
             _value: BigNumber,
         ): string {
             const self = this as any as ZRXTokenContract;
-            const inputAbi = self._lookupAbi('transfer(address,uint256)').inputs;
-            [_to,
-    _value
-    ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-    _value
-    ], BaseContract._bigNumberToString);
-            const abiEncodedTransactionData = self._lookupEthersInterface('transfer(address,uint256)').functions.transfer.encode([_to,
+            const abiEncodedTransactionData = self._strictEncodeArguments('transfer(address,uint256)', [_to,
     _value
     ]);
             return abiEncodedTransactionData;
@@ -527,18 +411,7 @@ export class ZRXTokenContract extends BaseContract {
         ): Promise<boolean
         > {
             const self = this as any as ZRXTokenContract;
-            const functionSignature = 'transfer(address,uint256)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_to,
-        _value
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_to,
-        _value
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_to,
-        _value
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.transfer;
-            const encodedData = ethersFunction.encode([_to,
+            const encodedData = self._strictEncodeArguments('transfer(address,uint256)', [_to,
         _value
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -551,11 +424,12 @@ export class ZRXTokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'transfer'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('transfer(address,uint256)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<boolean
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public allowance = {
@@ -567,18 +441,7 @@ export class ZRXTokenContract extends BaseContract {
         ): Promise<BigNumber
         > {
             const self = this as any as ZRXTokenContract;
-            const functionSignature = 'allowance(address,address)';
-            const inputAbi = self._lookupAbi(functionSignature).inputs;
-            [_owner,
-        _spender
-        ] = BaseContract._formatABIDataItemList(inputAbi, [_owner,
-        _spender
-        ], BaseContract._bigNumberToString.bind(self));
-            BaseContract.strictArgumentEncodingCheck(inputAbi, [_owner,
-        _spender
-        ]);
-            const ethersFunction = self._lookupEthersInterface(functionSignature).functions.allowance;
-            const encodedData = ethersFunction.encode([_owner,
+            const encodedData = self._strictEncodeArguments('allowance(address,address)', [_owner,
         _spender
         ]);
             const callDataWithDefaults = await BaseContract._applyDefaultsToTxDataAsync(
@@ -591,11 +454,12 @@ export class ZRXTokenContract extends BaseContract {
             );
             const rawCallResult = await self._web3Wrapper.callAsync(callDataWithDefaults, defaultBlock);
             BaseContract._throwIfRevertWithReasonCallResult(rawCallResult);
-            let resultArray = ethersFunction.decode(rawCallResult);
-            const outputAbi = (_.find(self.abi, {name: 'allowance'}) as MethodAbi).outputs;
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._lowercaseAddress.bind(this));
-            resultArray = BaseContract._formatABIDataItemList(outputAbi, resultArray, BaseContract._bnToBigNumber.bind(this));
-            return resultArray[0];
+            const abiEncoder = self._lookupAbiEncoder('allowance(address,address)');
+            // tslint:disable boolean-naming
+            const result = abiEncoder.strictDecodeReturnValue<BigNumber
+        >(rawCallResult);
+            // tslint:enable boolean-naming
+            return result;
         },
     };
     public static async deployFrom0xArtifactAsync(
@@ -641,7 +505,7 @@ export class ZRXTokenContract extends BaseContract {
     }
     constructor(abi: ContractAbi, address: string, provider: Provider, txDefaults?: Partial<TxData>) {
         super('ZRXToken', abi, address, provider, txDefaults);
-        classUtils.bindAll(this, ['_ethersInterfacesByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
+        classUtils.bindAll(this, ['_abiEncoderByFunctionSignature', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
 // tslint:enable:no-unbound-method
diff --git a/packages/abi-gen-wrappers/src/index.ts b/packages/abi-gen-wrappers/src/index.ts
index b5a7d0cfe..1a81c0187 100644
--- a/packages/abi-gen-wrappers/src/index.ts
+++ b/packages/abi-gen-wrappers/src/index.ts
@@ -10,6 +10,7 @@ export * from './generated-wrappers/exchange';
 export * from './generated-wrappers/forwarder';
 export * from './generated-wrappers/i_validator';
 export * from './generated-wrappers/i_wallet';
+export * from './generated-wrappers/multi_asset_proxy';
 export * from './generated-wrappers/order_validator';
 export * from './generated-wrappers/weth9';
 export * from './generated-wrappers/zrx_token';
diff --git a/packages/abi-gen/CHANGELOG.json b/packages/abi-gen/CHANGELOG.json
index 4bbcdc897..ab516e4c6 100644
--- a/packages/abi-gen/CHANGELOG.json
+++ b/packages/abi-gen/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.20",
         "changes": [
diff --git a/packages/abi-gen/CHANGELOG.md b/packages/abi-gen/CHANGELOG.md
index 26d42cd36..af74218b8 100644
--- a/packages/abi-gen/CHANGELOG.md
+++ b/packages/abi-gen/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.22 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.21 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.20 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/abi-gen/package.json b/packages/abi-gen/package.json
index 4a2754233..7f968893c 100644
--- a/packages/abi-gen/package.json
+++ b/packages/abi-gen/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/abi-gen",
-    "version": "1.0.20",
+    "version": "1.0.22",
     "engines": {
         "node": ">=6.12"
     },
@@ -31,10 +31,10 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/abi-gen/README.md",
     "dependencies": {
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
         "chalk": "^2.3.0",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "glob": "^7.1.2",
         "handlebars": "^4.0.11",
         "lodash": "^4.17.5",
@@ -45,7 +45,7 @@
         "yargs": "^10.0.3"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/glob": "5.0.35",
         "@types/handlebars": "^4.0.36",
         "@types/mkdirp": "^0.5.1",
diff --git a/packages/abi-gen/src/index.ts b/packages/abi-gen/src/index.ts
index 5bad920ca..6e0ca2c87 100644
--- a/packages/abi-gen/src/index.ts
+++ b/packages/abi-gen/src/index.ts
@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 
-import { abiUtils, logUtils } from '@0x/utils';
+import { AbiEncoder, abiUtils, logUtils } from '@0x/utils';
 import chalk from 'chalk';
 import { AbiDefinition, ConstructorAbi, EventAbi, MethodAbi } from 'ethereum-types';
 import { sync as globSync } from 'glob';
@@ -133,7 +133,7 @@ for (const abiFileName of abiFileNames) {
             singleReturnValue: methodAbi.outputs.length === 1,
             hasReturnValue: methodAbi.outputs.length !== 0,
             tsName: sanitizedMethodAbis[methodAbiIndex].name,
-            functionSignature: abiUtils.getFunctionSignature(methodAbi),
+            functionSignature: new AbiEncoder.Method(methodAbi).getSignature(),
         };
         return methodData;
     });
diff --git a/packages/assert/CHANGELOG.json b/packages/assert/CHANGELOG.json
index 0e89b408e..0210f9400 100644
--- a/packages/assert/CHANGELOG.json
+++ b/packages/assert/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.21",
         "changes": [
diff --git a/packages/assert/CHANGELOG.md b/packages/assert/CHANGELOG.md
index 25383b2d1..5a4af165a 100644
--- a/packages/assert/CHANGELOG.md
+++ b/packages/assert/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.23 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.22 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.21 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/assert/package.json b/packages/assert/package.json
index e11ccb3cb..38481d6f0 100644
--- a/packages/assert/package.json
+++ b/packages/assert/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/assert",
-    "version": "1.0.21",
+    "version": "1.0.23",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,7 +29,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/assert/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
         "@types/valid-url": "^1.0.2",
@@ -44,9 +44,9 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/json-schemas": "^2.1.5",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
+        "@0x/json-schemas": "^2.1.7",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
         "lodash": "^4.17.5",
         "valid-url": "^1.0.9"
     },
diff --git a/packages/asset-buyer/CHANGELOG.json b/packages/asset-buyer/CHANGELOG.json
index 484ad1625..909236772 100644
--- a/packages/asset-buyer/CHANGELOG.json
+++ b/packages/asset-buyer/CHANGELOG.json
@@ -8,13 +8,23 @@
         ]
     },
     {
+        "timestamp": 1547561734,
+        "version": "4.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "4.0.0",
         "changes": [
             {
                 "note": "Raise custom InsufficientAssetLiquidityError error with amountAvailableToFill attribute",
                 "pr": 1437
             }
-        ]
+        ],
+        "timestamp": 1547225310
     },
     {
         "timestamp": 1547040760,
diff --git a/packages/asset-buyer/CHANGELOG.md b/packages/asset-buyer/CHANGELOG.md
index 70bbe8302..85c02479a 100644
--- a/packages/asset-buyer/CHANGELOG.md
+++ b/packages/asset-buyer/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.1 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v4.0.0 - _January 11, 2019_
+
+    * Raise custom InsufficientAssetLiquidityError error with amountAvailableToFill attribute (#1437)
+
 ## v3.0.5 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/asset-buyer/package.json b/packages/asset-buyer/package.json
index 1aa178b9f..45cd8954d 100644
--- a/packages/asset-buyer/package.json
+++ b/packages/asset-buyer/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/asset-buyer",
-    "version": "3.0.5",
+    "version": "4.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -36,21 +36,21 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/asset-buyer/README.md",
     "dependencies": {
-        "@0x/assert": "^1.0.21",
-        "@0x/connect": "^3.0.11",
-        "@0x/contract-wrappers": "^4.2.0",
-        "@0x/json-schemas": "^2.1.5",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
-        "ethereum-types": "^1.1.4",
+        "@0x/assert": "^1.0.23",
+        "@0x/connect": "^3.0.13",
+        "@0x/contract-wrappers": "^5.0.0",
+        "@0x/json-schemas": "^2.1.7",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
+        "ethereum-types": "^1.1.6",
         "lodash": "^4.17.5"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/lodash": "^4.14.116",
         "@types/mocha": "^2.2.42",
         "@types/node": "*",
diff --git a/packages/asset-buyer/src/utils/order_provider_response_processor.ts b/packages/asset-buyer/src/utils/order_provider_response_processor.ts
index 25e85b2cc..4244d196c 100644
--- a/packages/asset-buyer/src/utils/order_provider_response_processor.ts
+++ b/packages/asset-buyer/src/utils/order_provider_response_processor.ts
@@ -105,7 +105,7 @@ function getValidOrdersWithRemainingFillableMakerAssetAmountsFromOnChain(
             // get corresponding on-chain state for the order
             const { orderInfo, traderInfo } = ordersAndTradersInfo[index];
             // if the order IS NOT fillable, do not add anything to the accumulations and continue iterating
-            if (orderInfo.orderStatus !== OrderStatus.FILLABLE) {
+            if (orderInfo.orderStatus !== OrderStatus.Fillable) {
                 return accOrders;
             }
             // if the order IS fillable, add the order and calculate the remaining fillable amount
diff --git a/packages/base-contract/CHANGELOG.json b/packages/base-contract/CHANGELOG.json
index bd54400d3..68ebe8d9e 100644
--- a/packages/base-contract/CHANGELOG.json
+++ b/packages/base-contract/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "3.0.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "3.0.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "3.0.11",
         "changes": [
diff --git a/packages/base-contract/CHANGELOG.md b/packages/base-contract/CHANGELOG.md
index 7a1a96639..975a56fd4 100644
--- a/packages/base-contract/CHANGELOG.md
+++ b/packages/base-contract/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.13 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v3.0.12 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v3.0.11 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/base-contract/package.json b/packages/base-contract/package.json
index 7193c4881..db09b16a1 100644
--- a/packages/base-contract/package.json
+++ b/packages/base-contract/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/base-contract",
-    "version": "3.0.11",
+    "version": "3.0.13",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,7 +29,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/base-contract/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/lodash": "4.14.104",
         "chai": "^4.0.1",
         "make-promises-safe": "^1.1.0",
@@ -40,10 +40,10 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
-        "ethereum-types": "^1.1.4",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
+        "ethereum-types": "^1.1.6",
         "ethers": "~4.0.4",
         "lodash": "^4.17.5"
     },
diff --git a/packages/base-contract/src/index.ts b/packages/base-contract/src/index.ts
index fbb8478b7..c2b7b943b 100644
--- a/packages/base-contract/src/index.ts
+++ b/packages/base-contract/src/index.ts
@@ -1,4 +1,4 @@
-import { abiUtils, BigNumber } from '@0x/utils';
+import { AbiEncoder, abiUtils } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import {
     AbiDefinition,
@@ -16,8 +16,8 @@ import * as _ from 'lodash';
 
 import { formatABIDataItem } from './utils';
 
-export interface EthersInterfaceByFunctionSignature {
-    [key: string]: ethers.utils.Interface;
+export interface AbiEncoderByFunctionSignature {
+    [key: string]: AbiEncoder.Method;
 }
 
 const REVERT_ERROR_SELECTOR = '08c379a0';
@@ -26,7 +26,7 @@ const REVERT_ERROR_SELECTOR_BYTES_LENGTH = 4;
 const REVERT_ERROR_SELECTOR_END = REVERT_ERROR_SELECTOR_OFFSET + REVERT_ERROR_SELECTOR_BYTES_LENGTH * 2;
 
 export class BaseContract {
-    protected _ethersInterfacesByFunctionSignature: EthersInterfaceByFunctionSignature;
+    protected _abiEncoderByFunctionSignature: AbiEncoderByFunctionSignature;
     protected _web3Wrapper: Web3Wrapper;
     public abi: ContractAbi;
     public address: string;
@@ -65,9 +65,6 @@ export class BaseContract {
             return defaultConstructorAbi;
         }
     }
-    protected static _bnToBigNumber(_type: string, value: any): any {
-        return _.isObject(value) && value._hex ? new BigNumber(value.toString()) : value;
-    }
     protected static async _applyDefaultsToTxDataAsync<T extends Partial<TxData | TxDataPayable>>(
         txData: T,
         txDefaults: Partial<TxData>,
@@ -89,10 +86,15 @@ export class BaseContract {
     }
     protected static _throwIfRevertWithReasonCallResult(rawCallResult: string): void {
         if (rawCallResult.slice(REVERT_ERROR_SELECTOR_OFFSET, REVERT_ERROR_SELECTOR_END) === REVERT_ERROR_SELECTOR) {
-            const revertReason = ethers.utils.defaultAbiCoder.decode(
-                ['string'],
+            const revertReasonArray = AbiEncoder.create('(string)').decodeAsArray(
                 ethers.utils.hexDataSlice(rawCallResult, REVERT_ERROR_SELECTOR_BYTES_LENGTH),
             );
+            if (revertReasonArray.length !== 1) {
+                throw new Error(
+                    `Cannot safely decode revert reason: Expected an array with one element, got ${revertReasonArray}`,
+                );
+            }
+            const revertReason = revertReasonArray[0];
             throw new Error(revertReason);
         }
     }
@@ -100,11 +102,11 @@ export class BaseContract {
     // the given inputAbi. An argument may not be considered safely encodeable
     // if it overflows the corresponding Solidity type, there is a bug in the
     // encoder, or the encoder performs unsafe type coercion.
-    public static strictArgumentEncodingCheck(inputAbi: DataItem[], args: any[]): void {
-        const coder = new ethers.utils.AbiCoder();
+    public static strictArgumentEncodingCheck(inputAbi: DataItem[], args: any[]): string {
+        const abiEncoder = AbiEncoder.create(inputAbi);
         const params = abiUtils.parseEthersParams(inputAbi);
-        const rawEncoded = coder.encode(inputAbi, args);
-        const rawDecoded = coder.decode(inputAbi, rawEncoded);
+        const rawEncoded = abiEncoder.encode(args);
+        const rawDecoded = abiEncoder.decodeAsArray(rawEncoded);
         for (let i = 0; i < rawDecoded.length; i++) {
             const original = args[i];
             const decoded = rawDecoded[i];
@@ -116,13 +118,14 @@ export class BaseContract {
                 );
             }
         }
+        return rawEncoded;
     }
-    protected _lookupEthersInterface(functionSignature: string): ethers.utils.Interface {
-        const ethersInterface = this._ethersInterfacesByFunctionSignature[functionSignature];
-        if (_.isUndefined(ethersInterface)) {
+    protected _lookupAbiEncoder(functionSignature: string): AbiEncoder.Method {
+        const abiEncoder = this._abiEncoderByFunctionSignature[functionSignature];
+        if (_.isUndefined(abiEncoder)) {
             throw new Error(`Failed to lookup method with function signature '${functionSignature}'`);
         }
-        return ethersInterface;
+        return abiEncoder;
     }
     protected _lookupAbi(functionSignature: string): MethodAbi {
         const methodAbi = _.find(this.abi, (abiDefinition: AbiDefinition) => {
@@ -130,7 +133,7 @@ export class BaseContract {
                 return false;
             }
             // tslint:disable-next-line:no-unnecessary-type-assertion
-            const abiFunctionSignature = abiUtils.getFunctionSignature(abiDefinition as MethodAbi);
+            const abiFunctionSignature = new AbiEncoder.Method(abiDefinition as MethodAbi).getSignature();
             if (abiFunctionSignature === functionSignature) {
                 return true;
             }
@@ -138,6 +141,15 @@ export class BaseContract {
         }) as MethodAbi;
         return methodAbi;
     }
+    protected _strictEncodeArguments(functionSignature: string, functionArguments: any): string {
+        const abiEncoder = this._lookupAbiEncoder(functionSignature);
+        const inputAbi = abiEncoder.getDataItem().components;
+        if (inputAbi === undefined) {
+            throw new Error(`Undefined Method Input ABI`);
+        }
+        const abiEncodedArguments = abiEncoder.encode(functionArguments);
+        return abiEncodedArguments;
+    }
     constructor(
         contractName: string,
         abi: ContractAbi,
@@ -152,10 +164,11 @@ export class BaseContract {
         const methodAbis = this.abi.filter(
             (abiDefinition: AbiDefinition) => abiDefinition.type === AbiType.Function,
         ) as MethodAbi[];
-        this._ethersInterfacesByFunctionSignature = {};
+        this._abiEncoderByFunctionSignature = {};
         _.each(methodAbis, methodAbi => {
-            const functionSignature = abiUtils.getFunctionSignature(methodAbi);
-            this._ethersInterfacesByFunctionSignature[functionSignature] = new ethers.utils.Interface([methodAbi]);
+            const abiEncoder = new AbiEncoder.Method(methodAbi);
+            const functionSignature = abiEncoder.getSignature();
+            this._abiEncoderByFunctionSignature[functionSignature] = abiEncoder;
         });
     }
 }
diff --git a/packages/connect/CHANGELOG.json b/packages/connect/CHANGELOG.json
index 2f323f891..8fe9c562f 100644
--- a/packages/connect/CHANGELOG.json
+++ b/packages/connect/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "3.0.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "3.0.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "3.0.11",
         "changes": [
diff --git a/packages/connect/CHANGELOG.md b/packages/connect/CHANGELOG.md
index d01caa613..7556aae72 100644
--- a/packages/connect/CHANGELOG.md
+++ b/packages/connect/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.13 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v3.0.12 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v3.0.11 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/connect/package.json b/packages/connect/package.json
index 76817f23e..15a4c12f1 100644
--- a/packages/connect/package.json
+++ b/packages/connect/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/connect",
-    "version": "3.0.11",
+    "version": "3.0.13",
     "engines": {
         "node": ">=6.12"
     },
@@ -44,12 +44,12 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/connect/README.md",
     "dependencies": {
-        "@0x/assert": "^1.0.21",
-        "@0x/json-schemas": "^2.1.5",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
+        "@0x/assert": "^1.0.23",
+        "@0x/json-schemas": "^2.1.7",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
         "lodash": "^4.17.5",
         "query-string": "^5.0.1",
         "sinon": "^4.0.0",
@@ -57,7 +57,7 @@
         "websocket": "^1.0.25"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/fetch-mock": "^6.0.3",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
diff --git a/packages/contract-addresses/CHANGELOG.json b/packages/contract-addresses/CHANGELOG.json
index 36684d443..8800f2f73 100644
--- a/packages/contract-addresses/CHANGELOG.json
+++ b/packages/contract-addresses/CHANGELOG.json
@@ -1,5 +1,15 @@
 [
     {
+        "version": "2.2.0",
+        "changes": [
+            {
+                "note": "Added migration for `MultiAssetProxy` contract",
+                "pr": 1503
+            }
+        ],
+        "timestamp": 1547561734
+    },
+    {
         "version": "2.1.0",
         "changes": [
             {
diff --git a/packages/contract-addresses/CHANGELOG.md b/packages/contract-addresses/CHANGELOG.md
index d7f2ff7ea..1f3d187a4 100644
--- a/packages/contract-addresses/CHANGELOG.md
+++ b/packages/contract-addresses/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.2.0 - _January 15, 2019_
+
+    * Added migration for `MultiAssetProxy` contract (#1503)
+
 ## v2.1.0 - _January 9, 2019_
 
     * Added testnet entries for Dutch Auction contract (kovan,rinkeby,ropsten) (#1465)
diff --git a/packages/contract-addresses/package.json b/packages/contract-addresses/package.json
index c5a133ddf..260322081 100644
--- a/packages/contract-addresses/package.json
+++ b/packages/contract-addresses/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contract-addresses",
-    "version": "2.1.0",
+    "version": "2.2.0",
     "engines": {
         "node": ">=6.12"
     },
diff --git a/packages/contract-addresses/src/index.ts b/packages/contract-addresses/src/index.ts
index d181a1bec..4f580e825 100644
--- a/packages/contract-addresses/src/index.ts
+++ b/packages/contract-addresses/src/index.ts
@@ -70,15 +70,15 @@ const networkToAddresses: { [networkId: number]: ContractAddresses } = {
     },
     // NetworkId 50 represents our Ganache snapshot generated from migrations.
     50: {
-        exchange: '0x48bacb9266a570d521063ef5dd96e61686dbe788',
         erc20Proxy: '0x1dc4c1cefef38a777b15aa20260a54e584b16c48',
         erc721Proxy: '0x1d7022f5b17d2f8b695918fb48fa1089c9f85401',
         zrxToken: '0x871dd7c2b4b25e1aa18728e9d5f2af4c4e431f5c',
         etherToken: '0x0b1ba0af832d7c05fd64161e0db78e85978e8082',
-        assetProxyOwner: '0x34d402f14d58e001d8efbe6585051bf9706aa064',
-        forwarder: '0xb69e673309512a9d726f87304c6984054f87a93b',
-        orderValidator: '0xe86bb98fcf9bff3512c74589b78fb168200cc546',
-        dutchAuction: '0xdc688d29394a3f1e6f1e5100862776691afaf3d2',
+        exchange: '0x48bacb9266a570d521063ef5dd96e61686dbe788',
+        assetProxyOwner: '0x04b5dadd2c0d6a261bfafbc964e0cac48585def3',
+        forwarder: '0x6000eca38b8b5bba64986182fe2a69c57f6b5414',
+        orderValidator: '0x32eecaf51dfea9618e9bc94e9fbfddb1bbdcba15',
+        dutchAuction: '0x7e3f4e1deb8d3a05d9d2da87d9521268d0ec3239',
     },
 };
 
diff --git a/packages/contract-artifacts/CHANGELOG.json b/packages/contract-artifacts/CHANGELOG.json
index 237014d09..c488fa5c5 100644
--- a/packages/contract-artifacts/CHANGELOG.json
+++ b/packages/contract-artifacts/CHANGELOG.json
@@ -1,5 +1,15 @@
 [
     {
+        "version": "1.3.0",
+        "changes": [
+            {
+                "note": "Added artifact for `MultiAssetProxy` contract",
+                "pr": 1503
+            }
+        ],
+        "timestamp": 1547561734
+    },
+    {
         "version": "1.2.0",
         "changes": [
             {
diff --git a/packages/contract-artifacts/CHANGELOG.md b/packages/contract-artifacts/CHANGELOG.md
index 7f96cb571..c1118a3b9 100644
--- a/packages/contract-artifacts/CHANGELOG.md
+++ b/packages/contract-artifacts/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.3.0 - _January 15, 2019_
+
+    * Added artifact for `MultiAssetProxy` contract (#1503)
+
 ## v1.2.0 - _January 9, 2019_
 
     * Added artifact for Dutch Auction contract (#1465)
diff --git a/packages/contract-artifacts/artifacts/MultiAssetProxy.json b/packages/contract-artifacts/artifacts/MultiAssetProxy.json
new file mode 100644
index 000000000..f143cd817
--- /dev/null
+++ b/packages/contract-artifacts/artifacts/MultiAssetProxy.json
@@ -0,0 +1,263 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "MultiAssetProxy",
+    "compilerOutput": {
+        "abi": [
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "bytes4"
+                    }
+                ],
+                "name": "assetProxies",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "target",
+                        "type": "address"
+                    }
+                ],
+                "name": "addAuthorizedAddress",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "authorities",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "assetProxyId",
+                        "type": "bytes4"
+                    }
+                ],
+                "name": "getAssetProxy",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "target",
+                        "type": "address"
+                    }
+                ],
+                "name": "removeAuthorizedAddress",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "owner",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "name": "index",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "removeAuthorizedAddressAtIndex",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "getProxyId",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bytes4"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "pure",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "name": "authorized",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bool"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "assetProxy",
+                        "type": "address"
+                    }
+                ],
+                "name": "registerAssetProxy",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "getAuthorizedAddresses",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address[]"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "newOwner",
+                        "type": "address"
+                    }
+                ],
+                "name": "transferOwnership",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "fallback"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "caller",
+                        "type": "address"
+                    }
+                ],
+                "name": "AuthorizedAddressAdded",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "caller",
+                        "type": "address"
+                    }
+                ],
+                "name": "AuthorizedAddressRemoved",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": false,
+                        "name": "id",
+                        "type": "bytes4"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "assetProxy",
+                        "type": "address"
+                    }
+                ],
+                "name": "AssetProxyRegistered",
+                "type": "event"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "linkReferences": {},
+                "object": "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"
+            }
+        }
+    },
+    "networks": {}
+}
diff --git a/packages/contract-artifacts/package.json b/packages/contract-artifacts/package.json
index b819520c6..6a98615d7 100644
--- a/packages/contract-artifacts/package.json
+++ b/packages/contract-artifacts/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contract-artifacts",
-    "version": "1.2.0",
+    "version": "1.3.0",
     "engines": {
         "node": ">=6.12"
     },
diff --git a/packages/contract-artifacts/src/index.ts b/packages/contract-artifacts/src/index.ts
index bd5f8fee3..1cbda9518 100644
--- a/packages/contract-artifacts/src/index.ts
+++ b/packages/contract-artifacts/src/index.ts
@@ -1,7 +1,7 @@
 import * as AssetProxyOwner from '../artifacts/AssetProxyOwner.json';
-import * as DutchAuction from '../artifacts/DutchAuction.json';
 import * as DummyERC20Token from '../artifacts/DummyERC20Token.json';
 import * as DummyERC721Token from '../artifacts/DummyERC721Token.json';
+import * as DutchAuction from '../artifacts/DutchAuction.json';
 import * as ERC20Proxy from '../artifacts/ERC20Proxy.json';
 import * as ERC20Token from '../artifacts/ERC20Token.json';
 import * as ERC721Proxy from '../artifacts/ERC721Proxy.json';
@@ -10,6 +10,7 @@ import * as Exchange from '../artifacts/Exchange.json';
 import * as Forwarder from '../artifacts/Forwarder.json';
 import * as IValidator from '../artifacts/IValidator.json';
 import * as IWallet from '../artifacts/IWallet.json';
+import * as MultiAssetProxy from '../artifacts/MultiAssetProxy.json';
 import * as OrderValidator from '../artifacts/OrderValidator.json';
 import * as WETH9 from '../artifacts/WETH9.json';
 import * as ZRXToken from '../artifacts/ZRXToken.json';
@@ -27,6 +28,7 @@ export {
     Forwarder,
     IValidator,
     IWallet,
+    MultiAssetProxy,
     OrderValidator,
     WETH9,
     ZRXToken,
diff --git a/packages/contract-artifacts/tsconfig.json b/packages/contract-artifacts/tsconfig.json
index 59169fceb..1aef41bb8 100644
--- a/packages/contract-artifacts/tsconfig.json
+++ b/packages/contract-artifacts/tsconfig.json
@@ -19,6 +19,7 @@
         "./artifacts/Forwarder.json",
         "./artifacts/IValidator.json",
         "./artifacts/IWallet.json",
+        "./artifacts/MultiAssetProxy.json",
         "./artifacts/OrderValidator.json",
         "./artifacts/WETH9.json",
         "./artifacts/ZRXToken.json"
diff --git a/packages/contract-wrappers/CHANGELOG.json b/packages/contract-wrappers/CHANGELOG.json
index 2ba6c9f10..bfba8454c 100644
--- a/packages/contract-wrappers/CHANGELOG.json
+++ b/packages/contract-wrappers/CHANGELOG.json
@@ -1,5 +1,28 @@
 [
     {
+        "version": "5.0.0",
+        "changes": [
+            {
+                "note": "Renamed OrderStatus enum members to PascalCase to conform with tslint enum-naming rule",
+                "pr": 1474
+            },
+            {
+                "note": "Remove Exchange `matchOrdersAsync` optimization",
+                "pr": 1514
+            }
+        ],
+        "timestamp": 1547561734
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "4.2.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "4.2.0",
         "changes": [
             {
diff --git a/packages/contract-wrappers/CHANGELOG.md b/packages/contract-wrappers/CHANGELOG.md
index fe7bb7b81..8281f5050 100644
--- a/packages/contract-wrappers/CHANGELOG.md
+++ b/packages/contract-wrappers/CHANGELOG.md
@@ -5,6 +5,15 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v5.0.0 - _January 15, 2019_
+
+    * Renamed OrderStatus enum members to PascalCase to conform with tslint enum-naming rule (#1474)
+    * Remove Exchange `matchOrdersAsync` optimization (#1514)
+
+## v4.2.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v4.2.0 - _January 9, 2019_
 
     * Added Dutch Auction wrapper (#1465)
diff --git a/packages/contract-wrappers/package.json b/packages/contract-wrappers/package.json
index 708b4249a..c4f75a5a4 100644
--- a/packages/contract-wrappers/package.json
+++ b/packages/contract-wrappers/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/contract-wrappers",
-    "version": "4.2.0",
+    "version": "5.0.0",
     "description": "Smart TS wrappers for 0x smart contracts",
     "keywords": [
         "0xproject",
@@ -37,10 +37,10 @@
         "node": ">=6.0.0"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/migrations": "^2.3.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/migrations": "^2.4.0",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/tslint-config": "^2.0.2",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
         "@types/node": "*",
@@ -65,19 +65,19 @@
         "web3-provider-engine": "14.0.6"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^2.1.0",
-        "@0x/assert": "^1.0.21",
-        "@0x/contract-addresses": "^2.1.0",
-        "@0x/contract-artifacts": "^1.2.0",
-        "@0x/contracts-test-utils": "^1.0.3",
-        "@0x/fill-scenarios": "^1.1.0",
-        "@0x/json-schemas": "^2.1.5",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
-        "ethereum-types": "^1.1.4",
+        "@0x/abi-gen-wrappers": "^2.2.0",
+        "@0x/assert": "^1.0.23",
+        "@0x/contract-addresses": "^2.2.0",
+        "@0x/contract-artifacts": "^1.3.0",
+        "@0x/contracts-test-utils": "^2.0.0",
+        "@0x/fill-scenarios": "^1.1.2",
+        "@0x/json-schemas": "^2.1.7",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-abi": "0.6.5",
         "ethereumjs-blockstream": "6.0.0",
         "ethereumjs-util": "^5.1.1",
diff --git a/packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts
index c9556971a..49193f816 100644
--- a/packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts
+++ b/packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts
@@ -743,10 +743,6 @@ export class ExchangeWrapper extends ContractWrapper {
             rightSignedOrder.takerAssetData !== leftSignedOrder.makerAssetData
         ) {
             throw new Error(ExchangeWrapperError.AssetDataMismatch);
-        } else {
-            // Smart contracts assigns the asset data from the left order to the right one so we can save gas on reducing the size of call data
-            rightSignedOrder.makerAssetData = '0x';
-            rightSignedOrder.takerAssetData = '0x';
         }
         const exchangeInstance = await this._getExchangeContractAsync();
         if (orderTransactionOpts.shouldValidate) {
diff --git a/packages/contract-wrappers/src/types.ts b/packages/contract-wrappers/src/types.ts
index 945ca88cd..29cf8b2c4 100644
--- a/packages/contract-wrappers/src/types.ts
+++ b/packages/contract-wrappers/src/types.ts
@@ -177,13 +177,13 @@ export interface OrderInfo {
 }
 
 export enum OrderStatus {
-    INVALID = 0,
-    INVALID_MAKER_ASSET_AMOUNT,
-    INVALID_TAKER_ASSET_AMOUNT,
-    FILLABLE,
-    EXPIRED,
-    FULLY_FILLED,
-    CANCELLED,
+    Invalid = 0,
+    InvalidMakerAssetAmount,
+    InvalidTakerAssetAmount,
+    Fillable,
+    Expired,
+    FullyFilled,
+    Cancelled,
 }
 
 export interface TraderInfo {
diff --git a/packages/contract-wrappers/test/exchange_wrapper_test.ts b/packages/contract-wrappers/test/exchange_wrapper_test.ts
index 73ce6c743..a1d60dc6e 100644
--- a/packages/contract-wrappers/test/exchange_wrapper_test.ts
+++ b/packages/contract-wrappers/test/exchange_wrapper_test.ts
@@ -109,7 +109,7 @@ describe('ExchangeWrapper', () => {
                 );
                 await web3Wrapper.awaitTransactionSuccessAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS);
                 const orderInfo = await contractWrappers.exchange.getOrderInfoAsync(signedOrder);
-                expect(orderInfo.orderStatus).to.be.equal(OrderStatus.FULLY_FILLED);
+                expect(orderInfo.orderStatus).to.be.equal(OrderStatus.FullyFilled);
             });
         });
         describe('#fillOrKillOrderAsync', () => {
@@ -157,7 +157,7 @@ describe('ExchangeWrapper', () => {
                 );
                 await web3Wrapper.awaitTransactionSuccessAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS);
                 const orderInfo = await contractWrappers.exchange.getOrderInfoAsync(signedOrder);
-                expect(orderInfo.orderStatus).to.be.equal(OrderStatus.FULLY_FILLED);
+                expect(orderInfo.orderStatus).to.be.equal(OrderStatus.FullyFilled);
             });
         });
         describe('#marketSellOrdersAsync', () => {
@@ -183,7 +183,7 @@ describe('ExchangeWrapper', () => {
                 );
                 await web3Wrapper.awaitTransactionSuccessAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS);
                 const orderInfo = await contractWrappers.exchange.getOrderInfoAsync(signedOrder);
-                expect(orderInfo.orderStatus).to.be.equal(OrderStatus.FULLY_FILLED);
+                expect(orderInfo.orderStatus).to.be.equal(OrderStatus.FullyFilled);
             });
         });
         describe('#batchFillOrdersNoThrowAsync', () => {
@@ -197,9 +197,9 @@ describe('ExchangeWrapper', () => {
                 );
                 await web3Wrapper.awaitTransactionSuccessAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS);
                 let orderInfo = await contractWrappers.exchange.getOrderInfoAsync(signedOrder);
-                expect(orderInfo.orderStatus).to.be.equal(OrderStatus.FULLY_FILLED);
+                expect(orderInfo.orderStatus).to.be.equal(OrderStatus.FullyFilled);
                 orderInfo = await contractWrappers.exchange.getOrderInfoAsync(anotherSignedOrder);
-                expect(orderInfo.orderStatus).to.be.equal(OrderStatus.FULLY_FILLED);
+                expect(orderInfo.orderStatus).to.be.equal(OrderStatus.FullyFilled);
             });
         });
         describe('#batchFillOrKillOrdersAsync', () => {
diff --git a/packages/contract-wrappers/test/forwarder_wrapper_test.ts b/packages/contract-wrappers/test/forwarder_wrapper_test.ts
index ff4ff8b67..0d197eced 100644
--- a/packages/contract-wrappers/test/forwarder_wrapper_test.ts
+++ b/packages/contract-wrappers/test/forwarder_wrapper_test.ts
@@ -97,8 +97,8 @@ describe('ForwarderWrapper', () => {
             );
             await web3Wrapper.awaitTransactionSuccessAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS);
             const ordersInfo = await contractWrappers.exchange.getOrdersInfoAsync([signedOrder, anotherSignedOrder]);
-            expect(ordersInfo[0].orderStatus).to.be.equal(OrderStatus.FULLY_FILLED);
-            expect(ordersInfo[1].orderStatus).to.be.equal(OrderStatus.FULLY_FILLED);
+            expect(ordersInfo[0].orderStatus).to.be.equal(OrderStatus.FullyFilled);
+            expect(ordersInfo[1].orderStatus).to.be.equal(OrderStatus.FullyFilled);
         });
         it('should throw when invalid transaction and shouldValidate is true', async () => {
             const signedOrders = [signedOrder];
@@ -131,8 +131,8 @@ describe('ForwarderWrapper', () => {
             );
             await web3Wrapper.awaitTransactionSuccessAsync(txHash, constants.AWAIT_TRANSACTION_MINED_MS);
             const ordersInfo = await contractWrappers.exchange.getOrdersInfoAsync([signedOrder, anotherSignedOrder]);
-            expect(ordersInfo[0].orderStatus).to.be.equal(OrderStatus.FULLY_FILLED);
-            expect(ordersInfo[1].orderStatus).to.be.equal(OrderStatus.FILLABLE);
+            expect(ordersInfo[0].orderStatus).to.be.equal(OrderStatus.FullyFilled);
+            expect(ordersInfo[1].orderStatus).to.be.equal(OrderStatus.Fillable);
             expect(ordersInfo[1].orderTakerAssetFilledAmount).to.be.bignumber.equal(new BigNumber(4)); // only 95% of ETH is sold
         });
         it('should throw when invalid transaction and shouldValidate is true', async () => {
diff --git a/packages/contract-wrappers/test/order_validator_wrapper_test.ts b/packages/contract-wrappers/test/order_validator_wrapper_test.ts
index da3f99e72..c61c05d31 100644
--- a/packages/contract-wrappers/test/order_validator_wrapper_test.ts
+++ b/packages/contract-wrappers/test/order_validator_wrapper_test.ts
@@ -117,9 +117,9 @@ describe('OrderValidator', () => {
         it('should return correct on-chain order info for input orders', async () => {
             const firstOrderInfo = ordersInfo[0];
             const secondOrderInfo = ordersInfo[1];
-            expect(firstOrderInfo.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+            expect(firstOrderInfo.orderStatus).to.be.equal(OrderStatus.Fillable);
             expect(firstOrderInfo.orderTakerAssetFilledAmount).to.bignumber.equal(constants.ZERO_AMOUNT);
-            expect(secondOrderInfo.orderStatus).to.be.equal(OrderStatus.FILLABLE);
+            expect(secondOrderInfo.orderStatus).to.be.equal(OrderStatus.Fillable);
             expect(secondOrderInfo.orderTakerAssetFilledAmount).to.bignumber.equal(constants.ZERO_AMOUNT);
         });
         it('should return correct on-chain trader info for input takers', async () => {
diff --git a/packages/contract-wrappers/test/utils/token_utils.ts b/packages/contract-wrappers/test/utils/token_utils.ts
index f8a88637f..e390d2775 100644
--- a/packages/contract-wrappers/test/utils/token_utils.ts
+++ b/packages/contract-wrappers/test/utils/token_utils.ts
@@ -9,14 +9,14 @@ import { provider, txDefaults, web3Wrapper } from './web3_wrapper';
 // Before we were fetching them from the TokenRegistry but now we can't as it's deprecated and removed.
 // TODO(albrow): Import these from the migrations package instead of hard-coding them.
 const DUMMY_ERC_20_ADRESSES = [
-    '0x6dfff22588be9b3ef8cf0ad6dc9b84796f9fb45f',
-    '0xcfc18cec799fbd1793b5c43e773c98d4d61cc2db',
-    '0xf22469f31527adc53284441bae1665a7b9214dba',
-    '0x10add991de718a69dec2117cb6aa28098836511b',
-    '0x8d61158a366019ac78db4149d75fff9dda51160d',
+    '0x34d402f14d58e001d8efbe6585051bf9706aa064',
+    '0x25b8fe1de9daf8ba351890744ff28cf7dfa8f5e3',
+    '0xcdb594a32b1cc3479d8746279712c39d18a07fc0',
+    '0x1e2f9e10d02a6b8f8f69fcbf515e75039d2ea30d',
+    '0xbe0037eaf2d64fe5529bca93c18c9702d3930376',
 ];
 
-const DUMMY_ERC_721_ADRESSES = ['0x131855dda0aaff096f6854854c55a4debf61077a'];
+const DUMMY_ERC_721_ADRESSES = ['0x07f96aa816c1f244cbc6ef114bb2b023ba54a2eb'];
 
 export const tokenUtils = {
     getDummyERC20TokenAddresses(): string[] {
diff --git a/packages/dev-tools-pages/package.json b/packages/dev-tools-pages/package.json
index db927849e..79d4a840f 100644
--- a/packages/dev-tools-pages/package.json
+++ b/packages/dev-tools-pages/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/dev-tools-pages",
-    "version": "0.0.11",
+    "version": "0.0.13",
     "engines": {
         "node": ">=6.12"
     },
@@ -16,7 +16,7 @@
     },
     "license": "Apache-2.0",
     "dependencies": {
-        "@0x/react-shared": "^1.1.0",
+        "@0x/react-shared": "^1.1.2",
         "basscss": "^8.0.3",
         "bowser": "^1.9.3",
         "highlight.js": "^9.13.1",
@@ -71,6 +71,6 @@
         "puppeteerArgs": [
             "--no-sandbox",
             "--disable-setuid-sandbox"
-          ]
+        ]
     }
 }
diff --git a/packages/dev-utils/CHANGELOG.json b/packages/dev-utils/CHANGELOG.json
index 8f355466c..85189d70b 100644
--- a/packages/dev-utils/CHANGELOG.json
+++ b/packages/dev-utils/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.24",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.22",
         "changes": [
diff --git a/packages/dev-utils/CHANGELOG.md b/packages/dev-utils/CHANGELOG.md
index 04ee860b5..958fded86 100644
--- a/packages/dev-utils/CHANGELOG.md
+++ b/packages/dev-utils/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.24 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.23 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.22 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/dev-utils/package.json b/packages/dev-utils/package.json
index cb27ad5c5..4ab1d6439 100644
--- a/packages/dev-utils/package.json
+++ b/packages/dev-utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/dev-utils",
-    "version": "1.0.22",
+    "version": "1.0.24",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,7 +29,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/dev-utils/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
         "make-promises-safe": "^1.1.0",
@@ -41,14 +41,14 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/subproviders": "^2.1.9",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/web3-provider-engine": "^14.0.0",
         "chai": "^4.0.1",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "lodash": "^4.17.5"
     },
     "publishConfig": {
diff --git a/packages/devnet/genesis.json b/packages/devnet/genesis.json
index 073672dd9..03dc5d623 100644
--- a/packages/devnet/genesis.json
+++ b/packages/devnet/genesis.json
@@ -8,7 +8,7 @@
         "eip158Block": 3,
         "byzantiumBlock": 4,
         "clique": {
-            "period": 0,
+            "period": 1,
             "epoch": 30000
         }
     },
diff --git a/packages/ethereum-types/CHANGELOG.json b/packages/ethereum-types/CHANGELOG.json
index 9a0f2ad49..6265e01a1 100644
--- a/packages/ethereum-types/CHANGELOG.json
+++ b/packages/ethereum-types/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.1.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.1.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "1.1.4",
         "changes": [
             {
diff --git a/packages/ethereum-types/CHANGELOG.md b/packages/ethereum-types/CHANGELOG.md
index 1d27757f3..c1857495d 100644
--- a/packages/ethereum-types/CHANGELOG.md
+++ b/packages/ethereum-types/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.1.6 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.1.5 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.1.4 - _December 13, 2018_
 
     * Dependencies updated
diff --git a/packages/ethereum-types/package.json b/packages/ethereum-types/package.json
index 69ae64c2b..953b323c6 100644
--- a/packages/ethereum-types/package.json
+++ b/packages/ethereum-types/package.json
@@ -1,6 +1,6 @@
 {
     "name": "ethereum-types",
-    "version": "1.1.4",
+    "version": "1.1.6",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,7 +29,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/ethereum-types/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
         "tslint": "5.11.0",
diff --git a/packages/ethereum-types/src/index.ts b/packages/ethereum-types/src/index.ts
index 9430fdc98..a8dcfd68a 100644
--- a/packages/ethereum-types/src/index.ts
+++ b/packages/ethereum-types/src/index.ts
@@ -306,6 +306,8 @@ export interface TraceParams {
     disableMemory?: boolean;
     disableStack?: boolean;
     disableStorage?: boolean;
+    tracer?: string;
+    timeout?: string;
 }
 
 export type OutputField =
diff --git a/packages/fill-scenarios/CHANGELOG.json b/packages/fill-scenarios/CHANGELOG.json
index adf27655e..d8f2591a4 100644
--- a/packages/fill-scenarios/CHANGELOG.json
+++ b/packages/fill-scenarios/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.1.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.1.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "1.1.0",
         "changes": [
             {
diff --git a/packages/fill-scenarios/CHANGELOG.md b/packages/fill-scenarios/CHANGELOG.md
index 45cee1ce3..7df8b5ab3 100644
--- a/packages/fill-scenarios/CHANGELOG.md
+++ b/packages/fill-scenarios/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.1.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.1.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.1.0 - _January 9, 2019_
 
     * Add support for MultiAssetProxy (#1363)
diff --git a/packages/fill-scenarios/package.json b/packages/fill-scenarios/package.json
index a38dcc1c3..d882aba76 100644
--- a/packages/fill-scenarios/package.json
+++ b/packages/fill-scenarios/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/fill-scenarios",
-    "version": "1.1.0",
+    "version": "1.1.2",
     "description": "0x order fill scenario generator",
     "main": "lib/index.js",
     "types": "lib/index.d.ts",
@@ -20,7 +20,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/fill-scenarios/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/lodash": "4.14.104",
         "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
@@ -28,15 +28,15 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^2.1.0",
-        "@0x/base-contract": "^3.0.11",
-        "@0x/contract-artifacts": "^1.2.0",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
-        "ethereum-types": "^1.1.4",
+        "@0x/abi-gen-wrappers": "^2.2.0",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contract-artifacts": "^1.3.0",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
+        "ethereum-types": "^1.1.6",
         "ethers": "~4.0.4",
         "lodash": "^4.17.5"
     },
diff --git a/packages/instant/CHANGELOG.json b/packages/instant/CHANGELOG.json
index db187140f..537670584 100644
--- a/packages/instant/CHANGELOG.json
+++ b/packages/instant/CHANGELOG.json
@@ -1,5 +1,14 @@
 [
     {
+        "version": "2.0.0",
+        "changes": [
+            {
+                "note": "Renamed ActionTypes enum members to PascalCase to conform with tslint enum-naming rule",
+                "pr": 1474
+            }
+        ]
+    },
+    {
         "timestamp": 1542821676,
         "version": "1.0.1",
         "changes": [
diff --git a/packages/instant/package.json b/packages/instant/package.json
index 0888fc6a6..36409ef3d 100644
--- a/packages/instant/package.json
+++ b/packages/instant/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/instant",
-    "version": "1.0.5",
+    "version": "1.0.7",
     "engines": {
         "node": ">=6.12"
     },
@@ -41,18 +41,18 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/instant/README.md",
     "dependencies": {
-        "@0x/assert": "^1.0.21",
-        "@0x/asset-buyer": "^3.0.5",
-        "@0x/json-schemas": "^2.1.5",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/assert": "^1.0.23",
+        "@0x/asset-buyer": "^4.0.1",
+        "@0x/json-schemas": "^2.1.7",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "bowser": "^1.9.4",
         "copy-to-clipboard": "^3.0.8",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "lodash": "^4.17.5",
         "polished": "^2.2.0",
         "react": "^16.5.2",
@@ -65,7 +65,7 @@
         "ts-optchain": "^0.1.1"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@static/discharge": "https://github.com/0xProject/discharge.git",
         "@types/enzyme": "^3.1.14",
         "@types/enzyme-adapter-react-16": "^1.0.3",
diff --git a/packages/instant/src/redux/actions.ts b/packages/instant/src/redux/actions.ts
index 9d7a61fc7..ca0be543b 100644
--- a/packages/instant/src/redux/actions.ts
+++ b/packages/instant/src/redux/actions.ts
@@ -21,57 +21,56 @@ function createAction<T extends string, P>(type: T, data?: P): PlainAction<T> |
 }
 
 export enum ActionTypes {
-    SET_ACCOUNT_STATE_LOADING = 'SET_ACCOUNT_STATE_LOADING',
-    SET_ACCOUNT_STATE_LOCKED = 'SET_ACCOUNT_STATE_LOCKED',
-    SET_ACCOUNT_STATE_READY = 'SET_ACCOUNT_STATE_READY',
-    UPDATE_ACCOUNT_ETH_BALANCE = 'UPDATE_ACCOUNT_ETH_BALANCE',
-    UPDATE_ETH_USD_PRICE = 'UPDATE_ETH_USD_PRICE',
-    UPDATE_SELECTED_ASSET_UNIT_AMOUNT = 'UPDATE_SELECTED_ASSET_UNIT_AMOUNT',
-    SET_BUY_ORDER_STATE_NONE = 'SET_BUY_ORDER_STATE_NONE',
-    SET_BUY_ORDER_STATE_VALIDATING = 'SET_BUY_ORDER_STATE_VALIDATING',
-    SET_BUY_ORDER_STATE_PROCESSING = 'SET_BUY_ORDER_STATE_PROCESSING',
-    SET_BUY_ORDER_STATE_FAILURE = 'SET_BUY_ORDER_STATE_FAILURE',
-    SET_BUY_ORDER_STATE_SUCCESS = 'SET_BUY_ORDER_STATE_SUCCESS',
-    UPDATE_LATEST_BUY_QUOTE = 'UPDATE_LATEST_BUY_QUOTE',
-    UPDATE_SELECTED_ASSET = 'UPDATE_SELECTED_ASSET',
-    SET_AVAILABLE_ASSETS = 'SET_AVAILABLE_ASSETS',
-    SET_QUOTE_REQUEST_STATE_PENDING = 'SET_QUOTE_REQUEST_STATE_PENDING',
-    SET_QUOTE_REQUEST_STATE_FAILURE = 'SET_QUOTE_REQUEST_STATE_FAILURE',
-    SET_ERROR_MESSAGE = 'SET_ERROR_MESSAGE',
-    HIDE_ERROR = 'HIDE_ERROR',
-    CLEAR_ERROR = 'CLEAR_ERROR',
-    RESET_AMOUNT = 'RESET_AMOUNT',
-    OPEN_STANDARD_SLIDING_PANEL = 'OPEN_STANDARD_SLIDING_PANEL',
-    CLOSE_STANDARD_SLIDING_PANEL = 'CLOSE_STANDARD_SLIDING_PANEL',
-    UPDATE_BASE_CURRENCY = 'UPDATE_BASE_CURRENCY',
+    SetAccountStateLoading = 'SET_ACCOUNT_STATE_LOADING',
+    SetAccountStateLocked = 'SET_ACCOUNT_STATE_LOCKED',
+    SetAccountStateReady = 'SET_ACCOUNT_STATE_READY',
+    UpdateAccountEthBalance = 'UPDATE_ACCOUNT_ETH_BALANCE',
+    UpdateEthUsdPrice = 'UPDATE_ETH_USD_PRICE',
+    UpdateSelectedAssetUnitAmount = 'UPDATE_SELECTED_ASSET_UNIT_AMOUNT',
+    SetBuyOrderStateNone = 'SET_BUY_ORDER_STATE_NONE',
+    SetBuyOrderStateValidating = 'SET_BUY_ORDER_STATE_VALIDATING',
+    SetBuyOrderStateProcessing = 'SET_BUY_ORDER_STATE_PROCESSING',
+    SetBuyOrderStateFailure = 'SET_BUY_ORDER_STATE_FAILURE',
+    SetBuyOrderStateSuccess = 'SET_BUY_ORDER_STATE_SUCCESS',
+    UpdateLatestBuyQuote = 'UPDATE_LATEST_BUY_QUOTE',
+    UpdateSelectedAsset = 'UPDATE_SELECTED_ASSET',
+    SetAvailableAssets = 'SET_AVAILABLE_ASSETS',
+    SetQuoteRequestStatePending = 'SET_QUOTE_REQUEST_STATE_PENDING',
+    SetQuoteRequestStateFailure = 'SET_QUOTE_REQUEST_STATE_FAILURE',
+    SetErrorMessage = 'SET_ERROR_MESSAGE',
+    HideError = 'HIDE_ERROR',
+    ClearError = 'CLEAR_ERROR',
+    ResetAmount = 'RESET_AMOUNT',
+    OpenStandardSlidingPanel = 'OPEN_STANDARD_SLIDING_PANEL',
+    CloseStandardSlidingPanel = 'CLOSE_STANDARD_SLIDING_PANEL',
+    UpdateBaseCurrency = 'UPDATE_BASE_CURRENCY',
 }
 
 export const actions = {
-    setAccountStateLoading: () => createAction(ActionTypes.SET_ACCOUNT_STATE_LOADING),
-    setAccountStateLocked: () => createAction(ActionTypes.SET_ACCOUNT_STATE_LOCKED),
-    setAccountStateReady: (address: string) => createAction(ActionTypes.SET_ACCOUNT_STATE_READY, address),
+    setAccountStateLoading: () => createAction(ActionTypes.SetAccountStateLoading),
+    setAccountStateLocked: () => createAction(ActionTypes.SetAccountStateLocked),
+    setAccountStateReady: (address: string) => createAction(ActionTypes.SetAccountStateReady, address),
     updateAccountEthBalance: (addressAndBalance: AddressAndEthBalanceInWei) =>
-        createAction(ActionTypes.UPDATE_ACCOUNT_ETH_BALANCE, addressAndBalance),
-    updateEthUsdPrice: (price?: BigNumber) => createAction(ActionTypes.UPDATE_ETH_USD_PRICE, price),
-    updateSelectedAssetAmount: (amount?: BigNumber) =>
-        createAction(ActionTypes.UPDATE_SELECTED_ASSET_UNIT_AMOUNT, amount),
-    setBuyOrderStateNone: () => createAction(ActionTypes.SET_BUY_ORDER_STATE_NONE),
-    setBuyOrderStateValidating: () => createAction(ActionTypes.SET_BUY_ORDER_STATE_VALIDATING),
+        createAction(ActionTypes.UpdateAccountEthBalance, addressAndBalance),
+    updateEthUsdPrice: (price?: BigNumber) => createAction(ActionTypes.UpdateEthUsdPrice, price),
+    updateSelectedAssetAmount: (amount?: BigNumber) => createAction(ActionTypes.UpdateSelectedAssetUnitAmount, amount),
+    setBuyOrderStateNone: () => createAction(ActionTypes.SetBuyOrderStateNone),
+    setBuyOrderStateValidating: () => createAction(ActionTypes.SetBuyOrderStateValidating),
     setBuyOrderStateProcessing: (txHash: string, startTimeUnix: number, expectedEndTimeUnix: number) =>
-        createAction(ActionTypes.SET_BUY_ORDER_STATE_PROCESSING, { txHash, startTimeUnix, expectedEndTimeUnix }),
-    setBuyOrderStateFailure: (txHash: string) => createAction(ActionTypes.SET_BUY_ORDER_STATE_FAILURE, txHash),
-    setBuyOrderStateSuccess: (txHash: string) => createAction(ActionTypes.SET_BUY_ORDER_STATE_SUCCESS, txHash),
-    updateLatestBuyQuote: (buyQuote?: BuyQuote) => createAction(ActionTypes.UPDATE_LATEST_BUY_QUOTE, buyQuote),
-    updateSelectedAsset: (asset: Asset) => createAction(ActionTypes.UPDATE_SELECTED_ASSET, asset),
-    setAvailableAssets: (availableAssets: Asset[]) => createAction(ActionTypes.SET_AVAILABLE_ASSETS, availableAssets),
-    setQuoteRequestStatePending: () => createAction(ActionTypes.SET_QUOTE_REQUEST_STATE_PENDING),
-    setQuoteRequestStateFailure: () => createAction(ActionTypes.SET_QUOTE_REQUEST_STATE_FAILURE),
-    setErrorMessage: (errorMessage: string) => createAction(ActionTypes.SET_ERROR_MESSAGE, errorMessage),
-    hideError: () => createAction(ActionTypes.HIDE_ERROR),
-    clearError: () => createAction(ActionTypes.CLEAR_ERROR),
-    resetAmount: () => createAction(ActionTypes.RESET_AMOUNT),
+        createAction(ActionTypes.SetBuyOrderStateProcessing, { txHash, startTimeUnix, expectedEndTimeUnix }),
+    setBuyOrderStateFailure: (txHash: string) => createAction(ActionTypes.SetBuyOrderStateFailure, txHash),
+    setBuyOrderStateSuccess: (txHash: string) => createAction(ActionTypes.SetBuyOrderStateSuccess, txHash),
+    updateLatestBuyQuote: (buyQuote?: BuyQuote) => createAction(ActionTypes.UpdateLatestBuyQuote, buyQuote),
+    updateSelectedAsset: (asset: Asset) => createAction(ActionTypes.UpdateSelectedAsset, asset),
+    setAvailableAssets: (availableAssets: Asset[]) => createAction(ActionTypes.SetAvailableAssets, availableAssets),
+    setQuoteRequestStatePending: () => createAction(ActionTypes.SetQuoteRequestStatePending),
+    setQuoteRequestStateFailure: () => createAction(ActionTypes.SetQuoteRequestStateFailure),
+    setErrorMessage: (errorMessage: string) => createAction(ActionTypes.SetErrorMessage, errorMessage),
+    hideError: () => createAction(ActionTypes.HideError),
+    clearError: () => createAction(ActionTypes.ClearError),
+    resetAmount: () => createAction(ActionTypes.ResetAmount),
     openStandardSlidingPanel: (content: StandardSlidingPanelContent) =>
-        createAction(ActionTypes.OPEN_STANDARD_SLIDING_PANEL, content),
-    closeStandardSlidingPanel: () => createAction(ActionTypes.CLOSE_STANDARD_SLIDING_PANEL),
-    updateBaseCurrency: (baseCurrency: BaseCurrency) => createAction(ActionTypes.UPDATE_BASE_CURRENCY, baseCurrency),
+        createAction(ActionTypes.OpenStandardSlidingPanel, content),
+    closeStandardSlidingPanel: () => createAction(ActionTypes.CloseStandardSlidingPanel),
+    updateBaseCurrency: (baseCurrency: BaseCurrency) => createAction(ActionTypes.UpdateBaseCurrency, baseCurrency),
 };
diff --git a/packages/instant/src/redux/analytics_middleware.ts b/packages/instant/src/redux/analytics_middleware.ts
index a86a16b1a..4b4d30213 100644
--- a/packages/instant/src/redux/analytics_middleware.ts
+++ b/packages/instant/src/redux/analytics_middleware.ts
@@ -21,7 +21,7 @@ export const analyticsMiddleware: Middleware = store => next => middlewareAction
     const curAccount = curState.providerState.account;
 
     switch (nextAction.type) {
-        case ActionTypes.SET_ACCOUNT_STATE_READY:
+        case ActionTypes.SetAccountStateReady:
             if (curAccount.state === AccountState.Ready) {
                 const didJustTurnReady = prevAccount.state !== AccountState.Ready;
                 const didJustUpdateAddress =
@@ -38,13 +38,13 @@ export const analyticsMiddleware: Middleware = store => next => middlewareAction
                 }
             }
             break;
-        case ActionTypes.SET_ACCOUNT_STATE_LOCKED:
+        case ActionTypes.SetAccountStateLocked:
             if (prevAccount.state !== AccountState.Locked && curAccount.state === AccountState.Locked) {
                 // if we are moving from account not locked to account locked, track `Account - Locked`
                 analytics.trackAccountLocked();
             }
             break;
-        case ActionTypes.UPDATE_ACCOUNT_ETH_BALANCE:
+        case ActionTypes.UpdateAccountEthBalance:
             if (
                 curAccount.state === AccountState.Ready &&
                 curAccount.ethBalanceInWei &&
@@ -58,7 +58,7 @@ export const analyticsMiddleware: Middleware = store => next => middlewareAction
                 analytics.addEventProperties({ ethBalanceInUnitAmount });
             }
             break;
-        case ActionTypes.UPDATE_SELECTED_ASSET:
+        case ActionTypes.UpdateSelectedAsset:
             const selectedAsset = curState.selectedAsset;
             if (selectedAsset) {
                 const assetName = selectedAsset.metaData.name;
@@ -79,7 +79,7 @@ export const analyticsMiddleware: Middleware = store => next => middlewareAction
                 analytics.addEventProperties(selectedAssetEventProperties);
             }
             break;
-        case ActionTypes.SET_AVAILABLE_ASSETS:
+        case ActionTypes.SetAvailableAssets:
             const availableAssets = curState.availableAssets;
             if (availableAssets) {
                 analytics.addEventProperties({
@@ -87,19 +87,19 @@ export const analyticsMiddleware: Middleware = store => next => middlewareAction
                 });
             }
             break;
-        case ActionTypes.OPEN_STANDARD_SLIDING_PANEL:
+        case ActionTypes.OpenStandardSlidingPanel:
             const openSlidingContent = curState.standardSlidingPanelSettings.content;
             if (openSlidingContent === StandardSlidingPanelContent.InstallWallet) {
                 analytics.trackInstallWalletModalOpened();
             }
             break;
-        case ActionTypes.CLOSE_STANDARD_SLIDING_PANEL:
+        case ActionTypes.CloseStandardSlidingPanel:
             const closeSlidingContent = curState.standardSlidingPanelSettings.content;
             if (closeSlidingContent === StandardSlidingPanelContent.InstallWallet) {
                 analytics.trackInstallWalletModalClosed();
             }
             break;
-        case ActionTypes.UPDATE_BASE_CURRENCY:
+        case ActionTypes.UpdateBaseCurrency:
             analytics.trackBaseCurrencyChanged(curState.baseCurrency);
             analytics.addEventProperties({ baseCurrency: curState.baseCurrency });
     }
diff --git a/packages/instant/src/redux/reducer.ts b/packages/instant/src/redux/reducer.ts
index 8c13c9c72..0d8bb4b05 100644
--- a/packages/instant/src/redux/reducer.ts
+++ b/packages/instant/src/redux/reducer.ts
@@ -72,11 +72,11 @@ export const DEFAULT_STATE: DefaultState = {
 export const createReducer = (initialState: State) => {
     const reducer = (state: State = initialState, action: Action): State => {
         switch (action.type) {
-            case ActionTypes.SET_ACCOUNT_STATE_LOADING:
+            case ActionTypes.SetAccountStateLoading:
                 return reduceStateWithAccount(state, LOADING_ACCOUNT);
-            case ActionTypes.SET_ACCOUNT_STATE_LOCKED:
+            case ActionTypes.SetAccountStateLocked:
                 return reduceStateWithAccount(state, LOCKED_ACCOUNT);
-            case ActionTypes.SET_ACCOUNT_STATE_READY: {
+            case ActionTypes.SetAccountStateReady: {
                 const address = action.data;
                 let newAccount: AccountReady = {
                     state: AccountState.Ready,
@@ -91,7 +91,7 @@ export const createReducer = (initialState: State) => {
                 }
                 return reduceStateWithAccount(state, newAccount);
             }
-            case ActionTypes.UPDATE_ACCOUNT_ETH_BALANCE: {
+            case ActionTypes.UpdateAccountEthBalance: {
                 const { address, ethBalanceInWei } = action.data;
                 const currentAccount = state.providerState.account;
                 if (currentAccount.state !== AccountState.Ready || currentAccount.address !== address) {
@@ -104,17 +104,17 @@ export const createReducer = (initialState: State) => {
                     return reduceStateWithAccount(state, newAccount);
                 }
             }
-            case ActionTypes.UPDATE_ETH_USD_PRICE:
+            case ActionTypes.UpdateEthUsdPrice:
                 return {
                     ...state,
                     ethUsdPrice: action.data,
                 };
-            case ActionTypes.UPDATE_SELECTED_ASSET_UNIT_AMOUNT:
+            case ActionTypes.UpdateSelectedAssetUnitAmount:
                 return {
                     ...state,
                     selectedAssetUnitAmount: action.data,
                 };
-            case ActionTypes.UPDATE_LATEST_BUY_QUOTE:
+            case ActionTypes.UpdateLatestBuyQuote:
                 const newBuyQuoteIfExists = action.data;
                 const shouldUpdate =
                     _.isUndefined(newBuyQuoteIfExists) || doesBuyQuoteMatchState(newBuyQuoteIfExists, state);
@@ -127,29 +127,29 @@ export const createReducer = (initialState: State) => {
                 } else {
                     return state;
                 }
-            case ActionTypes.SET_QUOTE_REQUEST_STATE_PENDING:
+            case ActionTypes.SetQuoteRequestStatePending:
                 return {
                     ...state,
                     latestBuyQuote: undefined,
                     quoteRequestState: AsyncProcessState.Pending,
                 };
-            case ActionTypes.SET_QUOTE_REQUEST_STATE_FAILURE:
+            case ActionTypes.SetQuoteRequestStateFailure:
                 return {
                     ...state,
                     latestBuyQuote: undefined,
                     quoteRequestState: AsyncProcessState.Failure,
                 };
-            case ActionTypes.SET_BUY_ORDER_STATE_NONE:
+            case ActionTypes.SetBuyOrderStateNone:
                 return {
                     ...state,
                     buyOrderState: { processState: OrderProcessState.None },
                 };
-            case ActionTypes.SET_BUY_ORDER_STATE_VALIDATING:
+            case ActionTypes.SetBuyOrderStateValidating:
                 return {
                     ...state,
                     buyOrderState: { processState: OrderProcessState.Validating },
                 };
-            case ActionTypes.SET_BUY_ORDER_STATE_PROCESSING:
+            case ActionTypes.SetBuyOrderStateProcessing:
                 const processingData = action.data;
                 const { startTimeUnix, expectedEndTimeUnix } = processingData;
                 return {
@@ -163,7 +163,7 @@ export const createReducer = (initialState: State) => {
                         },
                     },
                 };
-            case ActionTypes.SET_BUY_ORDER_STATE_FAILURE:
+            case ActionTypes.SetBuyOrderStateFailure:
                 const failureTxHash = action.data;
                 if ('txHash' in state.buyOrderState) {
                     if (state.buyOrderState.txHash === failureTxHash) {
@@ -179,7 +179,7 @@ export const createReducer = (initialState: State) => {
                     }
                 }
                 return state;
-            case ActionTypes.SET_BUY_ORDER_STATE_SUCCESS:
+            case ActionTypes.SetBuyOrderStateSuccess:
                 const successTxHash = action.data;
                 if ('txHash' in state.buyOrderState) {
                     if (state.buyOrderState.txHash === successTxHash) {
@@ -195,29 +195,29 @@ export const createReducer = (initialState: State) => {
                     }
                 }
                 return state;
-            case ActionTypes.SET_ERROR_MESSAGE:
+            case ActionTypes.SetErrorMessage:
                 return {
                     ...state,
                     latestErrorMessage: action.data,
                     latestErrorDisplayStatus: DisplayStatus.Present,
                 };
-            case ActionTypes.HIDE_ERROR:
+            case ActionTypes.HideError:
                 return {
                     ...state,
                     latestErrorDisplayStatus: DisplayStatus.Hidden,
                 };
-            case ActionTypes.CLEAR_ERROR:
+            case ActionTypes.ClearError:
                 return {
                     ...state,
                     latestErrorMessage: undefined,
                     latestErrorDisplayStatus: DisplayStatus.Hidden,
                 };
-            case ActionTypes.UPDATE_SELECTED_ASSET:
+            case ActionTypes.UpdateSelectedAsset:
                 return {
                     ...state,
                     selectedAsset: action.data,
                 };
-            case ActionTypes.RESET_AMOUNT:
+            case ActionTypes.ResetAmount:
                 return {
                     ...state,
                     latestBuyQuote: undefined,
@@ -225,12 +225,12 @@ export const createReducer = (initialState: State) => {
                     buyOrderState: { processState: OrderProcessState.None },
                     selectedAssetUnitAmount: undefined,
                 };
-            case ActionTypes.SET_AVAILABLE_ASSETS:
+            case ActionTypes.SetAvailableAssets:
                 return {
                     ...state,
                     availableAssets: action.data,
                 };
-            case ActionTypes.OPEN_STANDARD_SLIDING_PANEL:
+            case ActionTypes.OpenStandardSlidingPanel:
                 return {
                     ...state,
                     standardSlidingPanelSettings: {
@@ -238,7 +238,7 @@ export const createReducer = (initialState: State) => {
                         animationState: 'slidIn',
                     },
                 };
-            case ActionTypes.CLOSE_STANDARD_SLIDING_PANEL:
+            case ActionTypes.CloseStandardSlidingPanel:
                 return {
                     ...state,
                     standardSlidingPanelSettings: {
@@ -246,7 +246,7 @@ export const createReducer = (initialState: State) => {
                         animationState: 'slidOut',
                     },
                 };
-            case ActionTypes.UPDATE_BASE_CURRENCY:
+            case ActionTypes.UpdateBaseCurrency:
                 return {
                     ...state,
                     baseCurrency: action.data,
diff --git a/packages/instant/src/style/theme.ts b/packages/instant/src/style/theme.ts
index fd3f03c3f..49f3c81e6 100644
--- a/packages/instant/src/style/theme.ts
+++ b/packages/instant/src/style/theme.ts
@@ -11,7 +11,7 @@ const {
 } = styledComponents;
 
 export type Theme = { [key in ColorOption]: string };
-
+// tslint:disable:enum-naming
 export enum ColorOption {
     primaryColor = 'primaryColor',
     black = 'black',
diff --git a/packages/instant/src/types.ts b/packages/instant/src/types.ts
index f07a407da..606294c93 100644
--- a/packages/instant/src/types.ts
+++ b/packages/instant/src/types.ts
@@ -27,8 +27,8 @@ export enum QuoteFetchOrigin {
 }
 
 export enum BaseCurrency {
-    USD = 'USD',
-    ETH = 'ETH',
+    USD = 'USD', // tslint:disable-line:enum-naming
+    ETH = 'ETH', // tslint:disable-line:enum-naming
 }
 
 export interface SimulatedProgress {
@@ -95,7 +95,7 @@ export enum Network {
 
 export enum ZeroExInstantError {
     AssetMetaDataNotAvailable = 'ASSET_META_DATA_NOT_AVAILABLE',
-    InsufficientETH = 'INSUFFICIENT_ETH',
+    InsufficientETH = 'INSUFFICIENT_ETH', // tslint:disable-line:enum-naming
     CouldNotSubmitTransaction = 'COULD_NOT_SUBMIT_TRANSACTION',
 }
 
@@ -168,7 +168,7 @@ export enum WalletSuggestion {
 
 export enum OperatingSystem {
     Android = 'ANDROID',
-    iOS = 'IOS',
+    iOS = 'IOS', // tslint:disable-line:enum-naming
     Mac = 'MAC',
     Windows = 'WINDOWS',
     WindowsPhone = 'WINDOWS_PHONE',
diff --git a/packages/instant/src/util/analytics.ts b/packages/instant/src/util/analytics.ts
index 4faeaaf5a..fa8a72a2c 100644
--- a/packages/instant/src/util/analytics.ts
+++ b/packages/instant/src/util/analytics.ts
@@ -31,38 +31,38 @@ export const evaluateIfEnabled = (fnCall: () => void) => {
 };
 
 enum EventNames {
-    INSTANT_OPENED = 'Instant - Opened',
-    INSTANT_CLOSED = 'Instant - Closed',
-    ACCOUNT_LOCKED = 'Account - Locked',
-    ACCOUNT_READY = 'Account - Ready',
-    ACCOUNT_UNLOCK_REQUESTED = 'Account - Unlock Requested',
-    ACCOUNT_UNLOCK_DENIED = 'Account - Unlock Denied',
-    ACCOUNT_ADDRESS_CHANGED = 'Account - Address Changed',
-    BASE_CURRENCY_CHANGED = 'Base Currency - Changed',
-    PAYMENT_METHOD_DROPDOWN_OPENED = 'Payment Method - Dropdown Opened',
-    PAYMENT_METHOD_OPENED_ETHERSCAN = 'Payment Method - Opened Etherscan',
-    PAYMENT_METHOD_COPIED_ADDRESS = 'Payment Method - Copied Address',
-    BUY_NOT_ENOUGH_ETH = 'Buy - Not Enough Eth',
-    BUY_STARTED = 'Buy - Started',
-    BUY_SIGNATURE_DENIED = 'Buy - Signature Denied',
-    BUY_SIMULATION_FAILED = 'Buy - Simulation Failed',
-    BUY_UNKNOWN_ERROR = 'Buy - Unknown Error',
-    BUY_TX_SUBMITTED = 'Buy - Tx Submitted',
-    BUY_TX_SUCCEEDED = 'Buy - Tx Succeeded',
-    BUY_TX_FAILED = 'Buy - Tx Failed',
-    USD_PRICE_FETCH_FAILED = 'USD Price - Fetch Failed',
-    INSTALL_WALLET_CLICKED = 'Install Wallet - Clicked',
-    INSTALL_WALLET_MODAL_OPENED = 'Install Wallet - Modal - Opened',
-    INSTALL_WALLET_MODAL_CLICKED_EXPLANATION = 'Install Wallet - Modal - Clicked Explanation',
-    INSTALL_WALLET_MODAL_CLICKED_GET = 'Install Wallet - Modal - Clicked Get',
-    INSTALL_WALLET_MODAL_CLOSED = 'Install Wallet - Modal - Closed',
-    TOKEN_SELECTOR_OPENED = 'Token Selector - Opened',
-    TOKEN_SELECTOR_CLOSED = 'Token Selector - Closed',
-    TOKEN_SELECTOR_CHOSE = 'Token Selector - Chose',
-    TOKEN_SELECTOR_SEARCHED = 'Token Selector - Searched',
-    TRANSACTION_VIEWED = 'Transaction - Viewed',
-    QUOTE_FETCHED = 'Quote - Fetched',
-    QUOTE_ERROR = 'Quote - Error',
+    InstantOpened = 'Instant - Opened',
+    InstantClosed = 'Instant - Closed',
+    AccountLocked = 'Account - Locked',
+    AccountReady = 'Account - Ready',
+    AccountUnlockRequested = 'Account - Unlock Requested',
+    AccountUnlockDenied = 'Account - Unlock Denied',
+    AccountAddressChanged = 'Account - Address Changed',
+    BaseCurrencyChanged = 'Base Currency - Changed',
+    PaymentMethodDropdownOpened = 'Payment Method - Dropdown Opened',
+    PaymentMethodOpenedEtherscan = 'Payment Method - Opened Etherscan',
+    PaymentMethodCopiedAddress = 'Payment Method - Copied Address',
+    BuyNotEnoughEth = 'Buy - Not Enough Eth',
+    BuyStarted = 'Buy - Started',
+    BuySignatureDenied = 'Buy - Signature Denied',
+    BuySimulationFailed = 'Buy - Simulation Failed',
+    BuyUnknownError = 'Buy - Unknown Error',
+    BuyTxSubmitted = 'Buy - Tx Submitted',
+    BuyTxSucceeded = 'Buy - Tx Succeeded',
+    BuyTxFailed = 'Buy - Tx Failed',
+    UsdPriceFetchFailed = 'USD Price - Fetch Failed',
+    InstallWalletClicked = 'Install Wallet - Clicked',
+    InstallWalletModalOpened = 'Install Wallet - Modal - Opened',
+    InstallWalletModalClickedExplanation = 'Install Wallet - Modal - Clicked Explanation',
+    InstallWalletModalClickedGet = 'Install Wallet - Modal - Clicked Get',
+    InstallWalletModalClosed = 'Install Wallet - Modal - Closed',
+    TokenSelectorOpened = 'Token Selector - Opened',
+    TokenSelectorClosed = 'Token Selector - Closed',
+    TokenSelectorChose = 'Token Selector - Chose',
+    TokenSelectorSearched = 'Token Selector - Searched',
+    TransactionViewed = 'Transaction - Viewed',
+    QuoteFetched = 'Quote - Fetched',
+    QuoteError = 'Quote - Error',
 }
 
 const track = (eventName: EventNames, eventProperties: EventProperties = {}): void => {
@@ -125,7 +125,7 @@ export interface AnalyticsEventOptions {
     baseCurrency?: string;
 }
 export enum TokenSelectorClosedVia {
-    ClickedX = 'Clicked X',
+    ClickedX = 'Clicked X', // tslint:disable-line:enum-naming
     TokenChose = 'Token Chose',
 }
 export const analytics = {
@@ -169,80 +169,80 @@ export const analytics = {
         };
         return eventOptions;
     },
-    trackInstantOpened: trackingEventFnWithoutPayload(EventNames.INSTANT_OPENED),
-    trackInstantClosed: trackingEventFnWithoutPayload(EventNames.INSTANT_CLOSED),
-    trackAccountLocked: trackingEventFnWithoutPayload(EventNames.ACCOUNT_LOCKED),
-    trackAccountReady: (address: string) => trackingEventFnWithPayload(EventNames.ACCOUNT_READY)({ address }),
-    trackAccountUnlockRequested: trackingEventFnWithoutPayload(EventNames.ACCOUNT_UNLOCK_REQUESTED),
-    trackAccountUnlockDenied: trackingEventFnWithoutPayload(EventNames.ACCOUNT_UNLOCK_DENIED),
+    trackInstantOpened: trackingEventFnWithoutPayload(EventNames.InstantOpened),
+    trackInstantClosed: trackingEventFnWithoutPayload(EventNames.InstantClosed),
+    trackAccountLocked: trackingEventFnWithoutPayload(EventNames.AccountLocked),
+    trackAccountReady: (address: string) => trackingEventFnWithPayload(EventNames.AccountReady)({ address }),
+    trackAccountUnlockRequested: trackingEventFnWithoutPayload(EventNames.AccountUnlockRequested),
+    trackAccountUnlockDenied: trackingEventFnWithoutPayload(EventNames.AccountUnlockDenied),
     trackAccountAddressChanged: (address: string) =>
-        trackingEventFnWithPayload(EventNames.ACCOUNT_ADDRESS_CHANGED)({ address }),
+        trackingEventFnWithPayload(EventNames.AccountAddressChanged)({ address }),
     trackBaseCurrencyChanged: (currencyChangedTo: BaseCurrency) =>
-        trackingEventFnWithPayload(EventNames.BASE_CURRENCY_CHANGED)({ currencyChangedTo }),
-    trackPaymentMethodDropdownOpened: trackingEventFnWithoutPayload(EventNames.PAYMENT_METHOD_DROPDOWN_OPENED),
-    trackPaymentMethodOpenedEtherscan: trackingEventFnWithoutPayload(EventNames.PAYMENT_METHOD_OPENED_ETHERSCAN),
-    trackPaymentMethodCopiedAddress: trackingEventFnWithoutPayload(EventNames.PAYMENT_METHOD_COPIED_ADDRESS),
+        trackingEventFnWithPayload(EventNames.BaseCurrencyChanged)({ currencyChangedTo }),
+    trackPaymentMethodDropdownOpened: trackingEventFnWithoutPayload(EventNames.PaymentMethodDropdownOpened),
+    trackPaymentMethodOpenedEtherscan: trackingEventFnWithoutPayload(EventNames.PaymentMethodOpenedEtherscan),
+    trackPaymentMethodCopiedAddress: trackingEventFnWithoutPayload(EventNames.PaymentMethodCopiedAddress),
     trackBuyNotEnoughEth: (buyQuote: BuyQuote) =>
-        trackingEventFnWithPayload(EventNames.BUY_NOT_ENOUGH_ETH)(buyQuoteEventProperties(buyQuote)),
+        trackingEventFnWithPayload(EventNames.BuyNotEnoughEth)(buyQuoteEventProperties(buyQuote)),
     trackBuyStarted: (buyQuote: BuyQuote) =>
-        trackingEventFnWithPayload(EventNames.BUY_STARTED)(buyQuoteEventProperties(buyQuote)),
+        trackingEventFnWithPayload(EventNames.BuyStarted)(buyQuoteEventProperties(buyQuote)),
     trackBuySignatureDenied: (buyQuote: BuyQuote) =>
-        trackingEventFnWithPayload(EventNames.BUY_SIGNATURE_DENIED)(buyQuoteEventProperties(buyQuote)),
+        trackingEventFnWithPayload(EventNames.BuySignatureDenied)(buyQuoteEventProperties(buyQuote)),
     trackBuySimulationFailed: (buyQuote: BuyQuote) =>
-        trackingEventFnWithPayload(EventNames.BUY_SIMULATION_FAILED)(buyQuoteEventProperties(buyQuote)),
+        trackingEventFnWithPayload(EventNames.BuySimulationFailed)(buyQuoteEventProperties(buyQuote)),
     trackBuyUnknownError: (buyQuote: BuyQuote, errorMessage: string) =>
-        trackingEventFnWithPayload(EventNames.BUY_UNKNOWN_ERROR)({
+        trackingEventFnWithPayload(EventNames.BuyUnknownError)({
             ...buyQuoteEventProperties(buyQuote),
             errorMessage,
         }),
     trackBuyTxSubmitted: (buyQuote: BuyQuote, txHash: string, startTimeUnix: number, expectedEndTimeUnix: number) =>
-        trackingEventFnWithPayload(EventNames.BUY_TX_SUBMITTED)({
+        trackingEventFnWithPayload(EventNames.BuyTxSubmitted)({
             ...buyQuoteEventProperties(buyQuote),
             txHash,
             expectedTxTimeMs: expectedEndTimeUnix - startTimeUnix,
         }),
     trackBuyTxSucceeded: (buyQuote: BuyQuote, txHash: string, startTimeUnix: number, expectedEndTimeUnix: number) =>
-        trackingEventFnWithPayload(EventNames.BUY_TX_SUCCEEDED)({
+        trackingEventFnWithPayload(EventNames.BuyTxSucceeded)({
             ...buyQuoteEventProperties(buyQuote),
             txHash,
             expectedTxTimeMs: expectedEndTimeUnix - startTimeUnix,
             actualTxTimeMs: new Date().getTime() - startTimeUnix,
         }),
     trackBuyTxFailed: (buyQuote: BuyQuote, txHash: string, startTimeUnix: number, expectedEndTimeUnix: number) =>
-        trackingEventFnWithPayload(EventNames.BUY_TX_FAILED)({
+        trackingEventFnWithPayload(EventNames.BuyTxFailed)({
             ...buyQuoteEventProperties(buyQuote),
             txHash,
             expectedTxTimeMs: expectedEndTimeUnix - startTimeUnix,
             actualTxTimeMs: new Date().getTime() - startTimeUnix,
         }),
     trackInstallWalletClicked: (walletSuggestion: WalletSuggestion) =>
-        trackingEventFnWithPayload(EventNames.INSTALL_WALLET_CLICKED)({ walletSuggestion }),
+        trackingEventFnWithPayload(EventNames.InstallWalletClicked)({ walletSuggestion }),
     trackInstallWalletModalClickedExplanation: trackingEventFnWithoutPayload(
-        EventNames.INSTALL_WALLET_MODAL_CLICKED_EXPLANATION,
+        EventNames.InstallWalletModalClickedExplanation,
     ),
-    trackInstallWalletModalClickedGet: trackingEventFnWithoutPayload(EventNames.INSTALL_WALLET_MODAL_CLICKED_GET),
-    trackInstallWalletModalOpened: trackingEventFnWithoutPayload(EventNames.INSTALL_WALLET_MODAL_OPENED),
-    trackInstallWalletModalClosed: trackingEventFnWithoutPayload(EventNames.INSTALL_WALLET_MODAL_CLOSED),
-    trackTokenSelectorOpened: trackingEventFnWithoutPayload(EventNames.TOKEN_SELECTOR_OPENED),
+    trackInstallWalletModalClickedGet: trackingEventFnWithoutPayload(EventNames.InstallWalletModalClickedGet),
+    trackInstallWalletModalOpened: trackingEventFnWithoutPayload(EventNames.InstallWalletModalOpened),
+    trackInstallWalletModalClosed: trackingEventFnWithoutPayload(EventNames.InstallWalletModalClosed),
+    trackTokenSelectorOpened: trackingEventFnWithoutPayload(EventNames.TokenSelectorOpened),
     trackTokenSelectorClosed: (closedVia: TokenSelectorClosedVia) =>
-        trackingEventFnWithPayload(EventNames.TOKEN_SELECTOR_CLOSED)({ closedVia }),
+        trackingEventFnWithPayload(EventNames.TokenSelectorClosed)({ closedVia }),
     trackTokenSelectorChose: (payload: { assetName: string; assetData: string }) =>
-        trackingEventFnWithPayload(EventNames.TOKEN_SELECTOR_CHOSE)(payload),
+        trackingEventFnWithPayload(EventNames.TokenSelectorChose)(payload),
     trackTokenSelectorSearched: (searchText: string) =>
-        trackingEventFnWithPayload(EventNames.TOKEN_SELECTOR_SEARCHED)({ searchText }),
+        trackingEventFnWithPayload(EventNames.TokenSelectorSearched)({ searchText }),
     trackTransactionViewed: (orderProcesState: OrderProcessState) =>
-        trackingEventFnWithPayload(EventNames.TRANSACTION_VIEWED)({ orderState: orderProcesState }),
+        trackingEventFnWithPayload(EventNames.TransactionViewed)({ orderState: orderProcesState }),
     trackQuoteFetched: (buyQuote: BuyQuote, fetchOrigin: QuoteFetchOrigin) =>
-        trackingEventFnWithPayload(EventNames.QUOTE_FETCHED)({
+        trackingEventFnWithPayload(EventNames.QuoteFetched)({
             ...buyQuoteEventProperties(buyQuote),
             fetchOrigin,
         }),
     trackQuoteError: (errorMessage: string, assetBuyAmount: BigNumber, fetchOrigin: QuoteFetchOrigin) => {
-        trackingEventFnWithPayload(EventNames.QUOTE_ERROR)({
+        trackingEventFnWithPayload(EventNames.QuoteError)({
             errorMessage,
             assetBuyAmount: assetBuyAmount.toString(),
             fetchOrigin,
         });
     },
-    trackUsdPriceFailed: trackingEventFnWithoutPayload(EventNames.USD_PRICE_FETCH_FAILED),
+    trackUsdPriceFailed: trackingEventFnWithoutPayload(EventNames.UsdPriceFetchFailed),
 };
diff --git a/packages/json-schemas/CHANGELOG.json b/packages/json-schemas/CHANGELOG.json
index 8a9def75f..1388b4dca 100644
--- a/packages/json-schemas/CHANGELOG.json
+++ b/packages/json-schemas/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "2.1.7",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "2.1.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "2.1.5",
         "changes": [
diff --git a/packages/json-schemas/CHANGELOG.md b/packages/json-schemas/CHANGELOG.md
index 6d3373336..4e562d9e8 100644
--- a/packages/json-schemas/CHANGELOG.md
+++ b/packages/json-schemas/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.1.7 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v2.1.6 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v2.1.5 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/json-schemas/package.json b/packages/json-schemas/package.json
index 5103486db..cd515a747 100644
--- a/packages/json-schemas/package.json
+++ b/packages/json-schemas/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/json-schemas",
-    "version": "2.1.5",
+    "version": "2.1.7",
     "engines": {
         "node": ">=6.12"
     },
@@ -39,14 +39,14 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/json-schemas/README.md",
     "dependencies": {
-        "@0x/typescript-typings": "^3.0.6",
+        "@0x/typescript-typings": "^3.0.8",
         "@types/node": "*",
         "jsonschema": "^1.2.0",
         "lodash.values": "^4.3.0"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
-        "@0x/utils": "^2.1.1",
+        "@0x/tslint-config": "^2.0.2",
+        "@0x/utils": "^3.0.1",
         "@types/lodash.foreach": "^4.5.3",
         "@types/lodash.values": "^4.3.3",
         "@types/mocha": "^2.2.42",
diff --git a/packages/metacoin/package.json b/packages/metacoin/package.json
index 6812ff823..accdd2949 100644
--- a/packages/metacoin/package.json
+++ b/packages/metacoin/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/metacoin",
-    "version": "0.0.33",
+    "version": "0.0.35",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,28 +29,28 @@
     "author": "",
     "license": "Apache-2.0",
     "dependencies": {
-        "@0x/abi-gen": "^1.0.20",
-        "@0x/abi-gen-templates": "^1.0.1",
-        "@0x/base-contract": "^3.0.11",
-        "@0x/sol-coverage": "^1.0.0",
-        "@0x/sol-profiler": "^1.0.0",
-        "@0x/sol-trace": "^1.0.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/tslint-config": "^2.0.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/abi-gen": "^1.0.22",
+        "@0x/abi-gen-templates": "^1.0.2",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/sol-coverage": "^1.0.2",
+        "@0x/sol-profiler": "^1.0.2",
+        "@0x/sol-trace": "^1.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/tslint-config": "^2.0.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/mocha": "^5.2.2",
         "copyfiles": "^2.0.0",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethers": "~4.0.4",
         "lodash": "^4.17.5",
         "run-s": "^0.0.0"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/sol-compiler": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/sol-compiler": "^2.0.2",
         "chai": "^4.0.1",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^2.0.1",
diff --git a/packages/migrations/CHANGELOG.json b/packages/migrations/CHANGELOG.json
index 5e7c89290..5962a9886 100644
--- a/packages/migrations/CHANGELOG.json
+++ b/packages/migrations/CHANGELOG.json
@@ -1,5 +1,24 @@
 [
     {
+        "version": "2.4.0",
+        "changes": [
+            {
+                "note": "Added migrations for `MultiAssetProxy` contract",
+                "pr": 1503
+            }
+        ],
+        "timestamp": 1547561734
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "2.3.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.3.0",
         "changes": [
             {
diff --git a/packages/migrations/CHANGELOG.md b/packages/migrations/CHANGELOG.md
index 420769187..6c9a84018 100644
--- a/packages/migrations/CHANGELOG.md
+++ b/packages/migrations/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.4.0 - _January 15, 2019_
+
+    * Added migrations for `MultiAssetProxy` contract (#1503)
+
+## v2.3.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v2.3.0 - _January 9, 2019_
 
     * Added migrations for Dutch Auction contract (#1465)
diff --git a/packages/migrations/package.json b/packages/migrations/package.json
index 774236ab4..3ca4e8d6b 100644
--- a/packages/migrations/package.json
+++ b/packages/migrations/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/migrations",
-    "version": "2.3.0",
+    "version": "2.4.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -35,9 +35,9 @@
     },
     "license": "Apache-2.0",
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/tslint-config": "^2.0.0",
-        "@0x/types": "^1.5.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/tslint-config": "^2.0.2",
+        "@0x/types": "^1.5.2",
         "@types/yargs": "^10.0.0",
         "make-promises-safe": "^1.1.0",
         "npm-run-all": "^4.1.2",
@@ -48,18 +48,18 @@
         "yargs": "^10.0.3"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^2.1.0",
-        "@0x/base-contract": "^3.0.11",
-        "@0x/contract-addresses": "^2.1.0",
-        "@0x/contract-artifacts": "^1.2.0",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/sol-compiler": "^2.0.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/abi-gen-wrappers": "^2.2.0",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contract-addresses": "^2.2.0",
+        "@0x/contract-artifacts": "^1.3.0",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@ledgerhq/hw-app-eth": "^4.3.0",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethers": "~4.0.4",
         "lodash": "^4.17.5"
     },
diff --git a/packages/migrations/src/migration.ts b/packages/migrations/src/migration.ts
index 99d1719f1..e0f245017 100644
--- a/packages/migrations/src/migration.ts
+++ b/packages/migrations/src/migration.ts
@@ -18,6 +18,8 @@ import { erc20TokenInfo, erc721TokenInfo } from './utils/token_info';
  */
 export async function runMigrationsAsync(provider: Provider, txDefaults: Partial<TxData>): Promise<ContractAddresses> {
     const web3Wrapper = new Web3Wrapper(provider);
+    const accounts: string[] = await web3Wrapper.getAvailableAddressesAsync();
+    const owner = accounts[0];
 
     // Proxies
     const erc20Proxy = await wrappers.ERC20ProxyContract.deployFrom0xArtifactAsync(
@@ -50,22 +52,35 @@ export async function runMigrationsAsync(provider: Provider, txDefaults: Partial
         zrxAssetData,
     );
 
-    // Multisigs
-    const accounts: string[] = await web3Wrapper.getAvailableAddressesAsync();
-    const owners = [accounts[0], accounts[1]];
-    const confirmationsRequired = new BigNumber(2);
-    const secondsRequired = new BigNumber(0);
-    const owner = accounts[0];
+    // Dummy ERC20 tokens
+    for (const token of erc20TokenInfo) {
+        const totalSupply = new BigNumber(1000000000000000000000000000);
+        // tslint:disable-next-line:no-unused-variable
+        const dummyErc20Token = await wrappers.DummyERC20TokenContract.deployFrom0xArtifactAsync(
+            artifacts.DummyERC20Token,
+            provider,
+            txDefaults,
+            token.name,
+            token.symbol,
+            token.decimals,
+            totalSupply,
+        );
+    }
 
-    // AssetProxyOwner
-    const assetProxyOwner = await wrappers.AssetProxyOwnerContract.deployFrom0xArtifactAsync(
-        artifacts.AssetProxyOwner,
+    // ERC721
+    // tslint:disable-next-line:no-unused-variable
+    const cryptoKittieToken = await wrappers.DummyERC721TokenContract.deployFrom0xArtifactAsync(
+        artifacts.DummyERC721Token,
+        provider,
+        txDefaults,
+        erc721TokenInfo[0].name,
+        erc721TokenInfo[0].symbol,
+    );
+
+    const multiAssetProxy = await wrappers.MultiAssetProxyContract.deployFrom0xArtifactAsync(
+        artifacts.MultiAssetProxy,
         provider,
         txDefaults,
-        owners,
-        [erc20Proxy.address, erc721Proxy.address],
-        confirmationsRequired,
-        secondsRequired,
     );
 
     await web3Wrapper.awaitTransactionSuccessAsync(
@@ -74,20 +89,33 @@ export async function runMigrationsAsync(provider: Provider, txDefaults: Partial
         }),
     );
     await web3Wrapper.awaitTransactionSuccessAsync(
-        await erc20Proxy.transferOwnership.sendTransactionAsync(assetProxyOwner.address, {
+        await erc721Proxy.addAuthorizedAddress.sendTransactionAsync(exchange.address, {
             from: owner,
         }),
     );
     await web3Wrapper.awaitTransactionSuccessAsync(
-        await erc721Proxy.addAuthorizedAddress.sendTransactionAsync(exchange.address, {
+        await multiAssetProxy.addAuthorizedAddress.sendTransactionAsync(exchange.address, {
             from: owner,
         }),
     );
+
+    // MultiAssetProxy
     await web3Wrapper.awaitTransactionSuccessAsync(
-        await erc721Proxy.transferOwnership.sendTransactionAsync(assetProxyOwner.address, {
+        await erc20Proxy.addAuthorizedAddress.sendTransactionAsync(multiAssetProxy.address, {
             from: owner,
         }),
     );
+    await web3Wrapper.awaitTransactionSuccessAsync(
+        await erc721Proxy.addAuthorizedAddress.sendTransactionAsync(multiAssetProxy.address, {
+            from: owner,
+        }),
+    );
+    await web3Wrapper.awaitTransactionSuccessAsync(
+        await multiAssetProxy.registerAssetProxy.sendTransactionAsync(erc20Proxy.address),
+    );
+    await web3Wrapper.awaitTransactionSuccessAsync(
+        await multiAssetProxy.registerAssetProxy.sendTransactionAsync(erc721Proxy.address),
+    );
 
     // Register the Asset Proxies to the Exchange
     await web3Wrapper.awaitTransactionSuccessAsync(
@@ -96,30 +124,8 @@ export async function runMigrationsAsync(provider: Provider, txDefaults: Partial
     await web3Wrapper.awaitTransactionSuccessAsync(
         await exchange.registerAssetProxy.sendTransactionAsync(erc721Proxy.address),
     );
-
-    // Dummy ERC20 tokens
-    for (const token of erc20TokenInfo) {
-        const totalSupply = new BigNumber(1000000000000000000000000000);
-        // tslint:disable-next-line:no-unused-variable
-        const dummyErc20Token = await wrappers.DummyERC20TokenContract.deployFrom0xArtifactAsync(
-            artifacts.DummyERC20Token,
-            provider,
-            txDefaults,
-            token.name,
-            token.symbol,
-            token.decimals,
-            totalSupply,
-        );
-    }
-
-    // ERC721
-    // tslint:disable-next-line:no-unused-variable
-    const cryptoKittieToken = await wrappers.DummyERC721TokenContract.deployFrom0xArtifactAsync(
-        artifacts.DummyERC721Token,
-        provider,
-        txDefaults,
-        erc721TokenInfo[0].name,
-        erc721TokenInfo[0].symbol,
+    await web3Wrapper.awaitTransactionSuccessAsync(
+        await exchange.registerAssetProxy.sendTransactionAsync(multiAssetProxy.address),
     );
 
     // Forwarder
@@ -149,6 +155,39 @@ export async function runMigrationsAsync(provider: Provider, txDefaults: Partial
         exchange.address,
     );
 
+    // Multisigs
+    const owners = [accounts[0], accounts[1]];
+    const confirmationsRequired = new BigNumber(2);
+    const secondsRequired = new BigNumber(0);
+
+    // AssetProxyOwner
+    const assetProxyOwner = await wrappers.AssetProxyOwnerContract.deployFrom0xArtifactAsync(
+        artifacts.AssetProxyOwner,
+        provider,
+        txDefaults,
+        owners,
+        [erc20Proxy.address, erc721Proxy.address, multiAssetProxy.address],
+        confirmationsRequired,
+        secondsRequired,
+    );
+
+    // Transfer Ownership to the Asset Proxy Owner
+    await web3Wrapper.awaitTransactionSuccessAsync(
+        await erc20Proxy.transferOwnership.sendTransactionAsync(assetProxyOwner.address, {
+            from: owner,
+        }),
+    );
+    await web3Wrapper.awaitTransactionSuccessAsync(
+        await erc721Proxy.transferOwnership.sendTransactionAsync(assetProxyOwner.address, {
+            from: owner,
+        }),
+    );
+    await web3Wrapper.awaitTransactionSuccessAsync(
+        await multiAssetProxy.transferOwnership.sendTransactionAsync(assetProxyOwner.address, {
+            from: owner,
+        }),
+    );
+
     // Fund the Forwarder with ZRX
     const zrxDecimals = await zrxToken.decimals.callAsync();
     const zrxForwarderAmount = Web3Wrapper.toBaseUnitAmount(new BigNumber(5000), zrxDecimals);
@@ -156,7 +195,7 @@ export async function runMigrationsAsync(provider: Provider, txDefaults: Partial
         await zrxToken.transfer.sendTransactionAsync(forwarder.address, zrxForwarderAmount, txDefaults),
     );
 
-    return {
+    const contractAddresses = {
         erc20Proxy: erc20Proxy.address,
         erc721Proxy: erc721Proxy.address,
         zrxToken: zrxToken.address,
@@ -167,6 +206,8 @@ export async function runMigrationsAsync(provider: Provider, txDefaults: Partial
         orderValidator: orderValidator.address,
         dutchAuction: dutchAuction.address,
     };
+
+    return contractAddresses;
 }
 
 let _cachedContractAddresses: ContractAddresses;
diff --git a/packages/monorepo-scripts/package.json b/packages/monorepo-scripts/package.json
index 3286b8412..e18aa1d2f 100644
--- a/packages/monorepo-scripts/package.json
+++ b/packages/monorepo-scripts/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/monorepo-scripts",
-    "version": "1.0.16",
+    "version": "1.0.18",
     "engines": {
         "node": ">=6.12"
     },
@@ -47,7 +47,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/utils": "^2.0.8",
+        "@0x/utils": "^3.0.1",
         "@lerna/batch-packages": "^3.0.0-beta.18",
         "@types/depcheck": "^0.6.0",
         "async-child-process": "^1.1.1",
diff --git a/packages/order-utils/CHANGELOG.json b/packages/order-utils/CHANGELOG.json
index 6cda7a1e6..ace3656c4 100644
--- a/packages/order-utils/CHANGELOG.json
+++ b/packages/order-utils/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "3.1.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "3.1.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.1.0",
         "changes": [
             {
diff --git a/packages/order-utils/CHANGELOG.md b/packages/order-utils/CHANGELOG.md
index eb36616d1..c82458f2e 100644
--- a/packages/order-utils/CHANGELOG.md
+++ b/packages/order-utils/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.1.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v3.1.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v3.1.0 - _January 9, 2019_
 
     * Use new ABI encoder, add encoding/decoding logic for MultiAsset assetData, and add information to return values in orderStateUtils (#1363)
diff --git a/packages/order-utils/package.json b/packages/order-utils/package.json
index e59ea664f..bdcbd2dfc 100644
--- a/packages/order-utils/package.json
+++ b/packages/order-utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/order-utils",
-    "version": "3.1.0",
+    "version": "3.1.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -35,8 +35,8 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/order-utils/README.md",
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/tslint-config": "^2.0.2",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "chai": "^4.0.1",
@@ -53,18 +53,18 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^2.1.0",
-        "@0x/assert": "^1.0.21",
-        "@0x/base-contract": "^3.0.11",
-        "@0x/contract-artifacts": "^1.2.0",
-        "@0x/json-schemas": "^2.1.5",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/abi-gen-wrappers": "^2.2.0",
+        "@0x/assert": "^1.0.23",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contract-artifacts": "^1.3.0",
+        "@0x/json-schemas": "^2.1.7",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/node": "*",
         "bn.js": "^4.11.8",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-abi": "0.6.5",
         "ethereumjs-util": "^5.1.1",
         "ethers": "~4.0.4",
diff --git a/packages/order-watcher/CHANGELOG.json b/packages/order-watcher/CHANGELOG.json
index e98a36719..bb77feee0 100644
--- a/packages/order-watcher/CHANGELOG.json
+++ b/packages/order-watcher/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "2.4.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "2.4.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.4.0",
         "changes": [
             {
diff --git a/packages/order-watcher/CHANGELOG.md b/packages/order-watcher/CHANGELOG.md
index 600b9fa6f..e5f4833cd 100644
--- a/packages/order-watcher/CHANGELOG.md
+++ b/packages/order-watcher/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.4.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v2.4.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v2.4.0 - _January 9, 2019_
 
     * Add support for `MultiAssetProxy` (#1363)
diff --git a/packages/order-watcher/package.json b/packages/order-watcher/package.json
index 5919759dd..4cae45604 100644
--- a/packages/order-watcher/package.json
+++ b/packages/order-watcher/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/order-watcher",
-    "version": "2.4.0",
+    "version": "2.4.2",
     "description": "An order watcher daemon that watches for order validity",
     "keywords": [
         "0x",
@@ -33,10 +33,10 @@
         "node": ">=6.0.0"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/migrations": "^2.3.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/migrations": "^2.4.0",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/tslint-config": "^2.0.2",
         "@types/bintrees": "^1.0.2",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
@@ -58,21 +58,21 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/abi-gen-wrappers": "^2.1.0",
-        "@0x/assert": "^1.0.21",
-        "@0x/base-contract": "^3.0.11",
-        "@0x/contract-addresses": "^2.1.0",
-        "@0x/contract-artifacts": "^1.2.0",
-        "@0x/contract-wrappers": "^4.2.0",
-        "@0x/fill-scenarios": "^1.1.0",
-        "@0x/json-schemas": "^2.1.5",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/abi-gen-wrappers": "^2.2.0",
+        "@0x/assert": "^1.0.23",
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contract-addresses": "^2.2.0",
+        "@0x/contract-artifacts": "^1.3.0",
+        "@0x/contract-wrappers": "^5.0.0",
+        "@0x/fill-scenarios": "^1.1.2",
+        "@0x/json-schemas": "^2.1.7",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "bintrees": "^1.0.2",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-blockstream": "6.0.0",
         "ethers": "~4.0.4",
         "lodash": "^4.17.5",
diff --git a/packages/pipeline/package.json b/packages/pipeline/package.json
index 47150300d..988dd8b74 100644
--- a/packages/pipeline/package.json
+++ b/packages/pipeline/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/pipeline",
-    "version": "1.0.3",
+    "version": "1.0.5",
     "private": true,
     "description": "Data pipeline for offline analysis",
     "scripts": {
@@ -27,7 +27,7 @@
     },
     "license": "Apache-2.0",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/axios": "^0.14.0",
         "@types/ramda": "^0.25.38",
         "chai": "^4.1.2",
@@ -39,23 +39,23 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/connect": "^3.0.11",
-        "@0x/contract-addresses": "^2.1.0",
-        "@0x/contract-artifacts": "^1.2.0",
+        "@0x/connect": "^3.0.13",
+        "@0x/contract-addresses": "^2.2.0",
+        "@0x/contract-artifacts": "^1.3.0",
         "@0x/contract-wrappers": "^3.0.0",
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/types": "^1.5.0",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/types": "^1.5.2",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/dockerode": "^2.5.9",
         "@types/p-limit": "^2.0.0",
         "async-parallel": "^1.2.3",
         "axios": "^0.18.0",
         "bottleneck": "^2.13.2",
         "dockerode": "^2.5.7",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "pg": "^7.5.0",
         "prettier": "^1.15.3",
         "ramda": "^0.25.0",
diff --git a/packages/pipeline/src/parsers/copper/index.ts b/packages/pipeline/src/parsers/copper/index.ts
index 6c0c5abd5..07da66d10 100644
--- a/packages/pipeline/src/parsers/copper/index.ts
+++ b/packages/pipeline/src/parsers/copper/index.ts
@@ -44,8 +44,8 @@ export interface CopperActivityParentResponse {
 
 // custom activity types
 export enum CopperActivityTypeCategory {
-    user = 'user',
-    system = 'system',
+    User = 'user',
+    System = 'system',
 }
 export interface CopperActivityTypeResponse {
     id: number;
@@ -90,7 +90,7 @@ export enum CopperCustomFieldType {
     Date = 'Date',
     Checkbox = 'Checkbox',
     Float = 'Float',
-    URL = 'URL',
+    URL = 'URL', // tslint:disable-line:enum-naming
     Percentage = 'Percentage',
     Currency = 'Currency',
     Connect = 'Connect',
diff --git a/packages/pipeline/src/scripts/pull_competing_dex_trades.ts b/packages/pipeline/src/scripts/pull_competing_dex_trades.ts
index 1478d5615..14644bb2e 100644
--- a/packages/pipeline/src/scripts/pull_competing_dex_trades.ts
+++ b/packages/pipeline/src/scripts/pull_competing_dex_trades.ts
@@ -1,7 +1,8 @@
-// tslint:disable:no-console
 import 'reflect-metadata';
 import { Connection, ConnectionOptions, createConnection, Repository } from 'typeorm';
 
+import { logUtils } from '@0x/utils';
+
 import { BloxySource } from '../data_sources/bloxy';
 import { DexTrade } from '../entities';
 import * as ormConfig from '../ormconfig';
@@ -27,14 +28,14 @@ async function getAndSaveTradesAsync(): Promise<void> {
     const bloxySource = new BloxySource(apiKey);
     const tradesRepository = connection.getRepository(DexTrade);
     const lastSeenTimestamp = await getLastSeenTimestampAsync(tradesRepository);
-    console.log(`Last seen timestamp: ${lastSeenTimestamp === 0 ? 'none' : lastSeenTimestamp}`);
-    console.log('Getting latest dex trades...');
+    logUtils.log(`Last seen timestamp: ${lastSeenTimestamp === 0 ? 'none' : lastSeenTimestamp}`);
+    logUtils.log('Getting latest dex trades...');
     const rawTrades = await bloxySource.getDexTradesAsync(lastSeenTimestamp);
-    console.log(`Parsing ${rawTrades.length} trades...`);
+    logUtils.log(`Parsing ${rawTrades.length} trades...`);
     const trades = parseBloxyTrades(rawTrades);
-    console.log(`Saving ${trades.length} trades...`);
+    logUtils.log(`Saving ${trades.length} trades...`);
     await tradesRepository.save(trades, { chunk: Math.ceil(trades.length / BATCH_SAVE_SIZE) });
-    console.log('Done saving trades.');
+    logUtils.log('Done saving trades.');
 }
 
 async function getLastSeenTimestampAsync(tradesRepository: Repository<DexTrade>): Promise<number> {
diff --git a/packages/pipeline/src/scripts/pull_copper.ts b/packages/pipeline/src/scripts/pull_copper.ts
index 69814f209..5e4a6a643 100644
--- a/packages/pipeline/src/scripts/pull_copper.ts
+++ b/packages/pipeline/src/scripts/pull_copper.ts
@@ -1,7 +1,8 @@
-// tslint:disable:no-console
 import * as R from 'ramda';
 import { Connection, ConnectionOptions, createConnection, Repository } from 'typeorm';
 
+import { logUtils } from '@0x/utils';
+
 import { CopperEndpoint, CopperSearchParams, CopperSource } from '../data_sources/copper';
 import { CopperActivity, CopperActivityType, CopperCustomField, CopperLead, CopperOpportunity } from '../entities';
 import * as ormConfig from '../ormconfig';
@@ -43,14 +44,14 @@ let connection: Connection;
 async function fetchAndSaveLeadsAsync(source: CopperSource): Promise<void> {
     const repository = connection.getRepository(CopperLead);
     const startTime = await getMaxAsync(connection, 'date_modified', 'raw.copper_leads');
-    console.log(`Fetching Copper leads starting from ${startTime}...`);
+    logUtils.log(`Fetching Copper leads starting from ${startTime}...`);
     await fetchAndSaveAsync(CopperEndpoint.Leads, source, startTime, {}, parseLeads, repository);
 }
 
 async function fetchAndSaveOpportunitiesAsync(source: CopperSource): Promise<void> {
     const repository = connection.getRepository(CopperOpportunity);
     const startTime = await getMaxAsync(connection, 'date_modified', 'raw.copper_opportunities');
-    console.log(`Fetching Copper opportunities starting from ${startTime}...`);
+    logUtils.log(`Fetching Copper opportunities starting from ${startTime}...`);
     await fetchAndSaveAsync(
         CopperEndpoint.Opportunities,
         source,
@@ -67,7 +68,7 @@ async function fetchAndSaveActivitiesAsync(source: CopperSource): Promise<void>
     const searchParams = {
         minimum_activity_date: Math.floor(startTime / ONE_SECOND),
     };
-    console.log(`Fetching Copper activities starting from ${startTime}...`);
+    logUtils.log(`Fetching Copper activities starting from ${startTime}...`);
     await fetchAndSaveAsync(CopperEndpoint.Activities, source, startTime, searchParams, parseActivities, repository);
 }
 
@@ -97,7 +98,7 @@ async function fetchAndSaveAsync<T extends CopperSearchResponse, E>(
     const numPages = await source.fetchNumberOfPagesAsync(endpoint);
     try {
         for (let i = numPages; i > 0; i--) {
-            console.log(`Fetching page ${i}/${numPages} of ${endpoint}...`);
+            logUtils.log(`Fetching page ${i}/${numPages} of ${endpoint}...`);
             const raw = await source.fetchSearchResultsAsync<T>(endpoint, {
                 ...searchParams,
                 page_number: i,
@@ -108,21 +109,21 @@ async function fetchAndSaveAsync<T extends CopperSearchResponse, E>(
             saved += newRecords.length;
         }
     } catch (err) {
-        console.log(`Error fetching ${endpoint}, stopping: ${err.stack}`);
+        logUtils.log(`Error fetching ${endpoint}, stopping: ${err.stack}`);
     } finally {
-        console.log(`Saved ${saved} items from ${endpoint}, done.`);
+        logUtils.log(`Saved ${saved} items from ${endpoint}, done.`);
     }
 }
 
 async function fetchAndSaveActivityTypesAsync(source: CopperSource): Promise<void> {
-    console.log(`Fetching Copper activity types...`);
+    logUtils.log(`Fetching Copper activity types...`);
     const activityTypes = await source.fetchActivityTypesAsync();
     const repository = connection.getRepository(CopperActivityType);
     await repository.save(parseActivityTypes(activityTypes));
 }
 
 async function fetchAndSaveCustomFieldsAsync(source: CopperSource): Promise<void> {
-    console.log(`Fetching Copper custom fields...`);
+    logUtils.log(`Fetching Copper custom fields...`);
     const customFields = await source.fetchCustomFieldsAsync();
     const repository = connection.getRepository(CopperCustomField);
     await repository.save(parseCustomFields(customFields));
diff --git a/packages/pipeline/src/scripts/pull_exchange_events.ts b/packages/pipeline/src/scripts/pull_exchange_events.ts
index e98fc6629..f8ce4038d 100644
--- a/packages/pipeline/src/scripts/pull_exchange_events.ts
+++ b/packages/pipeline/src/scripts/pull_exchange_events.ts
@@ -1,6 +1,6 @@
-// tslint:disable:no-console
 import { web3Factory } from '@0x/dev-utils';
 import { Web3ProviderEngine } from '@0x/subproviders';
+import { logUtils } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import R = require('ramda');
 import 'reflect-metadata';
@@ -32,38 +32,38 @@ let connection: Connection;
 })().catch(handleError);
 
 async function getFillEventsAsync(eventsSource: ExchangeEventsSource, endBlock: number): Promise<void> {
-    console.log('Checking existing fill events...');
+    logUtils.log('Checking existing fill events...');
     const repository = connection.getRepository(ExchangeFillEvent);
     const startBlock = await getStartBlockAsync(repository);
-    console.log(`Getting fill events starting at ${startBlock}...`);
+    logUtils.log(`Getting fill events starting at ${startBlock}...`);
     const eventLogs = await eventsSource.getFillEventsAsync(startBlock, endBlock);
-    console.log('Parsing fill events...');
+    logUtils.log('Parsing fill events...');
     const events = parseExchangeFillEvents(eventLogs);
-    console.log(`Retrieved and parsed ${events.length} total fill events.`);
+    logUtils.log(`Retrieved and parsed ${events.length} total fill events.`);
     await saveEventsAsync(startBlock === EXCHANGE_START_BLOCK, repository, events);
 }
 
 async function getCancelEventsAsync(eventsSource: ExchangeEventsSource, endBlock: number): Promise<void> {
-    console.log('Checking existing cancel events...');
+    logUtils.log('Checking existing cancel events...');
     const repository = connection.getRepository(ExchangeCancelEvent);
     const startBlock = await getStartBlockAsync(repository);
-    console.log(`Getting cancel events starting at ${startBlock}...`);
+    logUtils.log(`Getting cancel events starting at ${startBlock}...`);
     const eventLogs = await eventsSource.getCancelEventsAsync(startBlock, endBlock);
-    console.log('Parsing cancel events...');
+    logUtils.log('Parsing cancel events...');
     const events = parseExchangeCancelEvents(eventLogs);
-    console.log(`Retrieved and parsed ${events.length} total cancel events.`);
+    logUtils.log(`Retrieved and parsed ${events.length} total cancel events.`);
     await saveEventsAsync(startBlock === EXCHANGE_START_BLOCK, repository, events);
 }
 
 async function getCancelUpToEventsAsync(eventsSource: ExchangeEventsSource, endBlock: number): Promise<void> {
-    console.log('Checking existing CancelUpTo events...');
+    logUtils.log('Checking existing CancelUpTo events...');
     const repository = connection.getRepository(ExchangeCancelUpToEvent);
     const startBlock = await getStartBlockAsync(repository);
-    console.log(`Getting CancelUpTo events starting at ${startBlock}...`);
+    logUtils.log(`Getting CancelUpTo events starting at ${startBlock}...`);
     const eventLogs = await eventsSource.getCancelUpToEventsAsync(startBlock, endBlock);
-    console.log('Parsing CancelUpTo events...');
+    logUtils.log('Parsing CancelUpTo events...');
     const events = parseExchangeCancelUpToEvents(eventLogs);
-    console.log(`Retrieved and parsed ${events.length} total CancelUpTo events.`);
+    logUtils.log(`Retrieved and parsed ${events.length} total CancelUpTo events.`);
     await saveEventsAsync(startBlock === EXCHANGE_START_BLOCK, repository, events);
 }
 
@@ -72,7 +72,7 @@ const tableNameRegex = /^[a-zA-Z_]*$/;
 async function getStartBlockAsync<T extends ExchangeEvent>(repository: Repository<T>): Promise<number> {
     const fillEventCount = await repository.count();
     if (fillEventCount === 0) {
-        console.log(`No existing ${repository.metadata.name}s found.`);
+        logUtils.log(`No existing ${repository.metadata.name}s found.`);
         return EXCHANGE_START_BLOCK;
     }
     const tableName = repository.metadata.tableName;
@@ -91,7 +91,7 @@ async function saveEventsAsync<T extends ExchangeEvent>(
     repository: Repository<T>,
     events: T[],
 ): Promise<void> {
-    console.log(`Saving ${repository.metadata.name}s...`);
+    logUtils.log(`Saving ${repository.metadata.name}s...`);
     if (isInitialPull) {
         // Split data into numChunks pieces of maximum size BATCH_SAVE_SIZE
         // each.
@@ -104,7 +104,7 @@ async function saveEventsAsync<T extends ExchangeEvent>(
         await saveIndividuallyWithFallbackAsync(repository, events);
     }
     const totalEvents = await repository.count();
-    console.log(`Done saving events. There are now ${totalEvents} total ${repository.metadata.name}s.`);
+    logUtils.log(`Done saving events. There are now ${totalEvents} total ${repository.metadata.name}s.`);
 }
 
 async function saveIndividuallyWithFallbackAsync<T extends ExchangeEvent>(
diff --git a/packages/pipeline/src/scripts/pull_missing_blocks.ts b/packages/pipeline/src/scripts/pull_missing_blocks.ts
index ced9d99eb..345ea38fe 100644
--- a/packages/pipeline/src/scripts/pull_missing_blocks.ts
+++ b/packages/pipeline/src/scripts/pull_missing_blocks.ts
@@ -1,5 +1,6 @@
-// tslint:disable:no-console
 import { web3Factory } from '@0x/dev-utils';
+import { logUtils } from '@0x/utils';
+
 import * as Parallel from 'async-parallel';
 import R = require('ramda');
 import 'reflect-metadata';
@@ -47,7 +48,7 @@ interface MissingBlocksResponse {
 async function getAllMissingBlocksAsync(web3Source: Web3Source, tableName: string): Promise<void> {
     const blocksRepository = connection.getRepository(Block);
     while (true) {
-        console.log(`Checking for missing blocks in ${tableName}...`);
+        logUtils.log(`Checking for missing blocks in ${tableName}...`);
         const blockNumbers = await getMissingBlockNumbersAsync(tableName);
         if (blockNumbers.length === 0) {
             // There are no more missing blocks. We're done.
@@ -56,7 +57,7 @@ async function getAllMissingBlocksAsync(web3Source: Web3Source, tableName: strin
         await getAndSaveBlocksAsync(web3Source, blocksRepository, blockNumbers);
     }
     const totalBlocks = await blocksRepository.count();
-    console.log(`Done saving blocks for ${tableName}. There are now ${totalBlocks} total blocks.`);
+    logUtils.log(`Done saving blocks for ${tableName}. There are now ${totalBlocks} total blocks.`);
 }
 
 async function getMissingBlockNumbersAsync(tableName: string): Promise<number[]> {
@@ -68,7 +69,7 @@ async function getMissingBlockNumbersAsync(tableName: string): Promise<number[]>
     )) as MissingBlocksResponse[];
     const blockNumberStrings = R.pluck('block_number', response);
     const blockNumbers = R.map(parseInt, blockNumberStrings);
-    console.log(`Found ${blockNumbers.length} missing blocks.`);
+    logUtils.log(`Found ${blockNumbers.length} missing blocks.`);
     return blockNumbers;
 }
 
@@ -77,14 +78,14 @@ async function getAndSaveBlocksAsync(
     blocksRepository: Repository<Block>,
     blockNumbers: number[],
 ): Promise<void> {
-    console.log(`Getting block data for ${blockNumbers.length} blocks...`);
+    logUtils.log(`Getting block data for ${blockNumbers.length} blocks...`);
     Parallel.setConcurrency(MAX_CONCURRENCY);
     const rawBlocks = await Parallel.map(blockNumbers, async (blockNumber: number) =>
         web3Source.getBlockInfoAsync(blockNumber),
     );
-    console.log(`Parsing ${rawBlocks.length} blocks...`);
+    logUtils.log(`Parsing ${rawBlocks.length} blocks...`);
     const blocks = R.map(parseBlock, rawBlocks);
-    console.log(`Saving ${blocks.length} blocks...`);
+    logUtils.log(`Saving ${blocks.length} blocks...`);
     await blocksRepository.save(blocks, { chunk: Math.ceil(blocks.length / BATCH_SAVE_SIZE) });
-    console.log('Done saving this batch of blocks');
+    logUtils.log('Done saving this batch of blocks');
 }
diff --git a/packages/pipeline/src/scripts/pull_ohlcv_cryptocompare.ts b/packages/pipeline/src/scripts/pull_ohlcv_cryptocompare.ts
index d44eb5cc6..caac7b9d4 100644
--- a/packages/pipeline/src/scripts/pull_ohlcv_cryptocompare.ts
+++ b/packages/pipeline/src/scripts/pull_ohlcv_cryptocompare.ts
@@ -1,6 +1,7 @@
-// tslint:disable:no-console
 import { Connection, ConnectionOptions, createConnection, Repository } from 'typeorm';
 
+import { logUtils } from '@0x/utils';
+
 import { CryptoCompareOHLCVSource } from '../data_sources/ohlcv_external/crypto_compare';
 import { OHLCVExternal } from '../entities';
 import * as ormConfig from '../ormconfig';
@@ -24,14 +25,14 @@ let connection: Connection;
 
     const jobTime = new Date().getTime();
     const tradingPairs = await fetchOHLCVTradingPairsAsync(connection, SOURCE_NAME, EARLIEST_BACKFILL_TIME);
-    console.log(`Starting ${tradingPairs.length} job(s) to scrape Crypto Compare for OHLCV records...`);
+    logUtils.log(`Starting ${tradingPairs.length} job(s) to scrape Crypto Compare for OHLCV records...`);
 
     const fetchAndSavePromises = tradingPairs.map(async pair => {
         const pairs = source.generateBackfillIntervals(pair);
         return fetchAndSaveAsync(source, repository, jobTime, pairs);
     });
     await Promise.all(fetchAndSavePromises);
-    console.log(`Finished scraping OHLCV records from Crypto Compare, exiting...`);
+    logUtils.log(`Finished scraping OHLCV records from Crypto Compare, exiting...`);
     process.exit(0);
 })().catch(handleError);
 
@@ -60,7 +61,7 @@ async function fetchAndSaveAsync(
         }
         try {
             const records = await source.getHourlyOHLCVAsync(pair);
-            console.log(`Retrieved ${records.length} records for ${JSON.stringify(pair)}`);
+            logUtils.log(`Retrieved ${records.length} records for ${JSON.stringify(pair)}`);
             if (records.length > 0) {
                 const metadata: OHLCVMetadata = {
                     exchange: source.defaultExchange,
@@ -75,7 +76,7 @@ async function fetchAndSaveAsync(
             }
             i++;
         } catch (err) {
-            console.log(`Error scraping OHLCVRecords, stopping task for ${JSON.stringify(pair)} [${err}]`);
+            logUtils.log(`Error scraping OHLCVRecords, stopping task for ${JSON.stringify(pair)} [${err}]`);
             break;
         }
     }
@@ -90,6 +91,6 @@ async function saveRecordsAsync(repository: Repository<OHLCVExternal>, records:
         new Date(records[records.length - 1].endTime),
     ];
 
-    console.log(`Saving ${records.length} records to ${repository.metadata.name}... ${JSON.stringify(metadata)}`);
+    logUtils.log(`Saving ${records.length} records to ${repository.metadata.name}... ${JSON.stringify(metadata)}`);
     await repository.save(records);
 }
diff --git a/packages/pipeline/src/scripts/pull_radar_relay_orders.ts b/packages/pipeline/src/scripts/pull_radar_relay_orders.ts
index 03fc764f2..8e8720803 100644
--- a/packages/pipeline/src/scripts/pull_radar_relay_orders.ts
+++ b/packages/pipeline/src/scripts/pull_radar_relay_orders.ts
@@ -1,5 +1,6 @@
-// tslint:disable:no-console
 import { HttpClient } from '@0x/connect';
+import { logUtils } from '@0x/utils';
+
 import * as R from 'ramda';
 import 'reflect-metadata';
 import { Connection, ConnectionOptions, createConnection, EntityManager } from 'typeorm';
@@ -21,13 +22,13 @@ let connection: Connection;
 })().catch(handleError);
 
 async function getOrderbookAsync(): Promise<void> {
-    console.log('Getting all orders...');
+    logUtils.log('Getting all orders...');
     const connectClient = new HttpClient(RADAR_RELAY_URL);
     const rawOrders = await connectClient.getOrdersAsync({
         perPage: ORDERS_PER_PAGE,
     });
-    console.log(`Got ${rawOrders.records.length} orders.`);
-    console.log('Parsing orders...');
+    logUtils.log(`Got ${rawOrders.records.length} orders.`);
+    logUtils.log('Parsing orders...');
     // Parse the sra orders, then add source url to each.
     const orders = R.pipe(
         parseSraOrders,
@@ -35,7 +36,7 @@ async function getOrderbookAsync(): Promise<void> {
     )(rawOrders);
     // Save all the orders and update the observed time stamps in a single
     // transaction.
-    console.log('Saving orders and updating timestamps...');
+    logUtils.log('Saving orders and updating timestamps...');
     const observedTimestamp = Date.now();
     await connection.transaction(
         async (manager: EntityManager): Promise<void> => {
diff --git a/packages/pipeline/src/scripts/pull_trusted_tokens.ts b/packages/pipeline/src/scripts/pull_trusted_tokens.ts
index 5906deee6..8afb3e052 100644
--- a/packages/pipeline/src/scripts/pull_trusted_tokens.ts
+++ b/packages/pipeline/src/scripts/pull_trusted_tokens.ts
@@ -1,6 +1,8 @@
 import 'reflect-metadata';
 import { Connection, ConnectionOptions, createConnection } from 'typeorm';
 
+import { logUtils } from '@0x/utils';
+
 import { MetamaskTrustedTokenMeta, TrustedTokenSource, ZeroExTrustedTokenMeta } from '../data_sources/trusted_tokens';
 import { TokenMetadata } from '../entities';
 import * as ormConfig from '../ormconfig';
@@ -22,31 +24,25 @@ let connection: Connection;
 })().catch(handleError);
 
 async function getMetamaskTrustedTokensAsync(): Promise<void> {
-    // tslint:disable-next-line:no-console
-    console.log('Getting latest metamask trusted tokens list ...');
+    logUtils.log('Getting latest metamask trusted tokens list ...');
     const trustedTokensRepository = connection.getRepository(TokenMetadata);
     const trustedTokensSource = new TrustedTokenSource<Map<string, MetamaskTrustedTokenMeta>>(
         METAMASK_TRUSTED_TOKENS_URL,
     );
     const resp = await trustedTokensSource.getTrustedTokenMetaAsync();
     const trustedTokens = parseMetamaskTrustedTokens(resp);
-    // tslint:disable-next-line:no-console
-    console.log('Saving metamask trusted tokens list');
+    logUtils.log('Saving metamask trusted tokens list');
     await trustedTokensRepository.save(trustedTokens);
-    // tslint:disable-next-line:no-console
-    console.log('Done saving metamask trusted tokens.');
+    logUtils.log('Done saving metamask trusted tokens.');
 }
 
 async function getZeroExTrustedTokensAsync(): Promise<void> {
-    // tslint:disable-next-line:no-console
-    console.log('Getting latest 0x trusted tokens list ...');
+    logUtils.log('Getting latest 0x trusted tokens list ...');
     const trustedTokensRepository = connection.getRepository(TokenMetadata);
     const trustedTokensSource = new TrustedTokenSource<ZeroExTrustedTokenMeta[]>(ZEROEX_TRUSTED_TOKENS_URL);
     const resp = await trustedTokensSource.getTrustedTokenMetaAsync();
     const trustedTokens = parseZeroExTrustedTokens(resp);
-    // tslint:disable-next-line:no-console
-    console.log('Saving metamask trusted tokens list');
+    logUtils.log('Saving metamask trusted tokens list');
     await trustedTokensRepository.save(trustedTokens);
-    // tslint:disable-next-line:no-console
-    console.log('Done saving metamask trusted tokens.');
+    logUtils.log('Done saving metamask trusted tokens.');
 }
diff --git a/packages/pipeline/src/scripts/update_relayer_info.ts b/packages/pipeline/src/scripts/update_relayer_info.ts
index 41d29b385..910a0157c 100644
--- a/packages/pipeline/src/scripts/update_relayer_info.ts
+++ b/packages/pipeline/src/scripts/update_relayer_info.ts
@@ -1,7 +1,8 @@
-// tslint:disable:no-console
 import 'reflect-metadata';
 import { Connection, ConnectionOptions, createConnection } from 'typeorm';
 
+import { logUtils } from '@0x/utils';
+
 import { RelayerRegistrySource } from '../data_sources/relayer-registry';
 import { Relayer } from '../entities';
 import * as ormConfig from '../ormconfig';
@@ -22,12 +23,12 @@ let connection: Connection;
 })().catch(handleError);
 
 async function getRelayersAsync(): Promise<void> {
-    console.log('Getting latest relayer info...');
+    logUtils.log('Getting latest relayer info...');
     const relayerRepository = connection.getRepository(Relayer);
     const relayerSource = new RelayerRegistrySource(RELAYER_REGISTRY_URL);
     const relayersResp = await relayerSource.getRelayerInfoAsync();
     const relayers = parseRelayers(relayersResp);
-    console.log('Saving relayer info...');
+    logUtils.log('Saving relayer info...');
     await relayerRepository.save(relayers);
-    console.log('Done saving relayer info.');
+    logUtils.log('Done saving relayer info.');
 }
diff --git a/packages/react-docs/CHANGELOG.json b/packages/react-docs/CHANGELOG.json
index 02608f18d..101da65c7 100644
--- a/packages/react-docs/CHANGELOG.json
+++ b/packages/react-docs/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.25",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.24",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.23",
         "changes": [
diff --git a/packages/react-docs/CHANGELOG.md b/packages/react-docs/CHANGELOG.md
index 01f987645..5ec82b5be 100644
--- a/packages/react-docs/CHANGELOG.md
+++ b/packages/react-docs/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.25 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.24 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.23 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/react-docs/package.json b/packages/react-docs/package.json
index 7cd0ae55a..f8f2b6276 100644
--- a/packages/react-docs/package.json
+++ b/packages/react-docs/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/react-docs",
-    "version": "1.0.23",
+    "version": "1.0.25",
     "engines": {
         "node": ">=6.12"
     },
@@ -24,8 +24,8 @@
         "url": "https://github.com/0xProject/0x-monorepo.git"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/tslint-config": "^2.0.2",
         "@types/compare-versions": "^3.0.0",
         "@types/styled-components": "4.0.0",
         "make-promises-safe": "^1.1.0",
@@ -34,9 +34,9 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/react-shared": "^1.1.0",
-        "@0x/types": "^1.5.0",
-        "@0x/utils": "^2.1.1",
+        "@0x/react-shared": "^1.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/utils": "^3.0.1",
         "@types/lodash": "4.14.104",
         "@types/material-ui": "^0.20.0",
         "@types/node": "*",
@@ -47,13 +47,13 @@
         "compare-versions": "^3.0.1",
         "lodash": "^4.17.5",
         "material-ui": "^0.20.0",
-        "react": "^16.4.2",
-        "react-dom": "^16.4.2",
+        "react": "^16.5.2",
+        "react-dom": "^16.5.2",
         "react-markdown": "^3.2.2",
         "react-scroll": "0xproject/react-scroll#pr-330-and-replace-state",
         "react-tooltip": "^3.2.7",
         "semver": "5.5.0",
-        "styled-components": "^3.3.0"
+        "styled-components": "^4.0.1"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/react-shared/CHANGELOG.json b/packages/react-shared/CHANGELOG.json
index 23217137f..a6d2c4fa0 100644
--- a/packages/react-shared/CHANGELOG.json
+++ b/packages/react-shared/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.1.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.1.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "1.1.0",
         "changes": [
             {
diff --git a/packages/react-shared/CHANGELOG.md b/packages/react-shared/CHANGELOG.md
index a8f2764dd..e1a5df403 100644
--- a/packages/react-shared/CHANGELOG.md
+++ b/packages/react-shared/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.1.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.1.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.1.0 - _January 9, 2019_
 
     * Change implementation to use react-router-dom NavLink instead of Link. Expose `activeStyle` prop. (#1448)
diff --git a/packages/react-shared/package.json b/packages/react-shared/package.json
index 5754e238b..47d36ca66 100644
--- a/packages/react-shared/package.json
+++ b/packages/react-shared/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/react-shared",
-    "version": "1.1.0",
+    "version": "1.1.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -25,15 +25,15 @@
         "url": "https://github.com/0xProject/0x-monorepo.git"
     },
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/tslint-config": "^2.0.2",
         "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
         "tslint": "^5.9.1",
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/types": "^1.5.0",
+        "@0x/types": "^1.5.2",
         "@material-ui/core": "^3.0.1",
         "@types/is-mobile": "0.3.0",
         "@types/lodash": "4.14.104",
@@ -50,13 +50,13 @@
         "is-mobile": "^0.2.2",
         "lodash": "^4.17.5",
         "material-ui": "^0.20.0",
-        "react": "^16.4.2",
-        "react-dom": "^16.4.2",
-        "react-highlight": "0xproject/react-highlight#2f40a42e0a3f0ad126f9f42d505b97b603fc7162",
+        "react": "^16.5.2",
+        "react-dom": "^16.5.2",
+        "react-highlight": "0xproject/react-highlight#699ac4d9529e33520bff4b9bd9c624d21efbba75",
         "react-markdown": "^3.2.2",
         "react-router-dom": "^4.1.1",
         "react-scroll": "0xproject/react-scroll#pr-330-and-replace-state",
-        "styled-components": "^3.3.0",
+        "styled-components": "^4.0.1",
         "valid-url": "^1.0.9"
     },
     "publishConfig": {
diff --git a/packages/sol-compiler/CHANGELOG.json b/packages/sol-compiler/CHANGELOG.json
index 246b298ab..d7dd5a454 100644
--- a/packages/sol-compiler/CHANGELOG.json
+++ b/packages/sol-compiler/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/packages/sol-compiler/CHANGELOG.md b/packages/sol-compiler/CHANGELOG.md
index 6ec804c3a..dfcec1fa7 100644
--- a/packages/sol-compiler/CHANGELOG.md
+++ b/packages/sol-compiler/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _January 9, 2019_
 
     * Add sol-compiler watch mode with -w flag (#1461)
diff --git a/packages/sol-compiler/package.json b/packages/sol-compiler/package.json
index 6c9435bcd..26c8e8833 100644
--- a/packages/sol-compiler/package.json
+++ b/packages/sol-compiler/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-compiler",
-    "version": "2.0.0",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -42,8 +42,8 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-compiler/README.md",
     "devDependencies": {
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/tslint-config": "^2.0.2",
         "@types/chokidar": "^1.7.5",
         "@types/mkdirp": "^0.5.2",
         "@types/pluralize": "^0.0.29",
@@ -67,17 +67,17 @@
         "zeppelin-solidity": "1.8.0"
     },
     "dependencies": {
-        "@0x/assert": "^1.0.21",
-        "@0x/json-schemas": "^2.1.5",
-        "@0x/sol-resolver": "^1.2.1",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/assert": "^1.0.23",
+        "@0x/json-schemas": "^2.1.7",
+        "@0x/sol-resolver": "^1.2.3",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/yargs": "^11.0.0",
         "chalk": "^2.3.0",
         "chokidar": "^2.0.4",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "lodash": "^4.17.5",
         "mkdirp": "^0.5.1",
diff --git a/packages/sol-coverage/CHANGELOG.json b/packages/sol-coverage/CHANGELOG.json
index 223400eae..8157d441e 100644
--- a/packages/sol-coverage/CHANGELOG.json
+++ b/packages/sol-coverage/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "1.0.0",
         "changes": [
             {
diff --git a/packages/sol-coverage/CHANGELOG.md b/packages/sol-coverage/CHANGELOG.md
new file mode 100644
index 000000000..ac09a1bbf
--- /dev/null
+++ b/packages/sol-coverage/CHANGELOG.md
@@ -0,0 +1,18 @@
+<!--
+changelogUtils.file is auto-generated using the monorepo-scripts package. Don't edit directly.
+Edit the package's CHANGELOG.json file only.
+-->
+
+CHANGELOG
+
+## v1.0.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.1 - _January 11, 2019_
+
+    * Dependencies updated
+
+## v1.0.0 - _Invalid date_
+
+    * Initial release as a separate package. For historical entries see @0x/sol-tracing-utils (#1492)
diff --git a/packages/sol-coverage/package.json b/packages/sol-coverage/package.json
index 7dc764efd..efe91cf2b 100644
--- a/packages/sol-coverage/package.json
+++ b/packages/sol-coverage/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-coverage",
-    "version": "1.0.0",
+    "version": "1.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,14 +29,14 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-coverage/README.md",
     "dependencies": {
-        "@0x/subproviders": "^2.1.8",
-        "@0x/sol-tracing-utils": "^2.1.16",
-        "@0x/typescript-typings": "^3.0.6",
-        "ethereum-types": "^1.1.4",
+        "@0x/sol-tracing-utils": "^4.0.0",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/typescript-typings": "^3.0.8",
+        "ethereum-types": "^1.1.6",
         "lodash": "^4.17.5"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/node": "*",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
diff --git a/packages/sol-coverage/src/coverage_subprovider.ts b/packages/sol-coverage/src/coverage_subprovider.ts
index e6b546c4a..d03963ed6 100644
--- a/packages/sol-coverage/src/coverage_subprovider.ts
+++ b/packages/sol-coverage/src/coverage_subprovider.ts
@@ -74,19 +74,19 @@ export const coverageHandler: SingleFileSubtraceHandler = (
 
     let sourceRanges = _.map(subtrace, structLog => pcToSourceRange[structLog.pc]);
     sourceRanges = _.compact(sourceRanges); // Some PC's don't map to a source range and we just ignore them.
-    // By default lodash does a shallow object comparasion. We JSON.stringify them and compare as strings.
+    // By default lodash does a shallow object comparison. We JSON.stringify them and compare as strings.
     sourceRanges = _.uniqBy(sourceRanges, s => JSON.stringify(s)); // We don't care if one PC was covered multiple times within a single transaction
     sourceRanges = _.filter(sourceRanges, sourceRange => sourceRange.fileName === absoluteFileName);
     const branchCoverage: BranchCoverage = {};
     const branchIds = _.keys(coverageEntriesDescription.branchMap);
     for (const branchId of branchIds) {
         const branchDescription = coverageEntriesDescription.branchMap[branchId];
-        const isBranchCoveredByBranchIndex = _.map(branchDescription.locations, location => {
+        const branchIndexToIsBranchCovered = _.map(branchDescription.locations, location => {
             const isBranchCovered = _.some(sourceRanges, range => utils.isRangeInside(range.location, location));
             const timesBranchCovered = Number(isBranchCovered);
             return timesBranchCovered;
         });
-        branchCoverage[branchId] = isBranchCoveredByBranchIndex;
+        branchCoverage[branchId] = branchIndexToIsBranchCovered;
     }
     const statementCoverage: StatementCoverage = {};
     const statementIds = _.keys(coverageEntriesDescription.statementMap);
diff --git a/packages/sol-coverage/src/index.ts b/packages/sol-coverage/src/index.ts
index 97b4ecee6..6a91a3966 100644
--- a/packages/sol-coverage/src/index.ts
+++ b/packages/sol-coverage/src/index.ts
@@ -4,6 +4,8 @@ export {
     TruffleArtifactAdapter,
     AbstractArtifactAdapter,
     ContractData,
+    SourceCodes,
+    Sources,
 } from '@0x/sol-tracing-utils';
 
 export {
diff --git a/packages/sol-doc/CHANGELOG.json b/packages/sol-doc/CHANGELOG.json
index 70a769541..f95702ee4 100644
--- a/packages/sol-doc/CHANGELOG.json
+++ b/packages/sol-doc/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.12",
         "changes": [
diff --git a/packages/sol-doc/CHANGELOG.md b/packages/sol-doc/CHANGELOG.md
index 3416662e5..1a60b5f89 100644
--- a/packages/sol-doc/CHANGELOG.md
+++ b/packages/sol-doc/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.14 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.13 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.12 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/sol-doc/package.json b/packages/sol-doc/package.json
index f93abfe49..dee6ef2e5 100644
--- a/packages/sol-doc/package.json
+++ b/packages/sol-doc/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-doc",
-    "version": "1.0.12",
+    "version": "1.0.14",
     "description": "Solidity documentation generator",
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.js",
@@ -25,16 +25,16 @@
     "author": "F. Eugene Aumson",
     "license": "Apache-2.0",
     "dependencies": {
-        "@0x/sol-compiler": "^2.0.0",
-        "@0x/types": "^1.5.0",
-        "@0x/utils": "^2.1.1",
-        "ethereum-types": "^1.1.4",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/types": "^1.5.2",
+        "@0x/utils": "^3.0.1",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "lodash": "^4.17.10",
         "yargs": "^12.0.2"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "chai": "^4.1.2",
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^2.0.2",
diff --git a/packages/sol-profiler/CHANGELOG.json b/packages/sol-profiler/CHANGELOG.json
index 223400eae..8157d441e 100644
--- a/packages/sol-profiler/CHANGELOG.json
+++ b/packages/sol-profiler/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "1.0.0",
         "changes": [
             {
diff --git a/packages/sol-profiler/CHANGELOG.md b/packages/sol-profiler/CHANGELOG.md
new file mode 100644
index 000000000..ac09a1bbf
--- /dev/null
+++ b/packages/sol-profiler/CHANGELOG.md
@@ -0,0 +1,18 @@
+<!--
+changelogUtils.file is auto-generated using the monorepo-scripts package. Don't edit directly.
+Edit the package's CHANGELOG.json file only.
+-->
+
+CHANGELOG
+
+## v1.0.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.1 - _January 11, 2019_
+
+    * Dependencies updated
+
+## v1.0.0 - _Invalid date_
+
+    * Initial release as a separate package. For historical entries see @0x/sol-tracing-utils (#1492)
diff --git a/packages/sol-profiler/package.json b/packages/sol-profiler/package.json
index b85c82ed2..1a89e0a6b 100644
--- a/packages/sol-profiler/package.json
+++ b/packages/sol-profiler/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-profiler",
-    "version": "1.0.0",
+    "version": "1.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,14 +29,14 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-profiler/README.md",
     "dependencies": {
-        "@0x/subproviders": "^2.1.8",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/sol-tracing-utils": "^2.1.16",
-        "ethereum-types": "^1.1.4",
+        "@0x/sol-tracing-utils": "^4.0.0",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/typescript-typings": "^3.0.8",
+        "ethereum-types": "^1.1.6",
         "lodash": "^4.17.5"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/node": "*",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
diff --git a/packages/sol-profiler/src/index.ts b/packages/sol-profiler/src/index.ts
index 5d4806be4..fcb715d2d 100644
--- a/packages/sol-profiler/src/index.ts
+++ b/packages/sol-profiler/src/index.ts
@@ -3,6 +3,8 @@ export {
     SolCompilerArtifactAdapter,
     TruffleArtifactAdapter,
     ContractData,
+    SourceCodes,
+    Sources,
 } from '@0x/sol-tracing-utils';
 
 // HACK: ProfilerSubprovider is a hacky way to do profiling using coverage tools. Not production ready
diff --git a/packages/sol-profiler/src/profiler_subprovider.ts b/packages/sol-profiler/src/profiler_subprovider.ts
index c3ed13ea5..9f195f768 100644
--- a/packages/sol-profiler/src/profiler_subprovider.ts
+++ b/packages/sol-profiler/src/profiler_subprovider.ts
@@ -63,7 +63,7 @@ export const profilerHandler: SingleFileSubtraceHandler = (
 ): Coverage => {
     const absoluteFileName = contractData.sources[fileIndex];
     const profilerEntriesDescription = collectCoverageEntries(contractData.sourceCodes[fileIndex]);
-    const gasConsumedByStatement: { [statementId: string]: number } = {};
+    const statementToGasConsumed: { [statementId: string]: number } = {};
     const statementIds = _.keys(profilerEntriesDescription.statementMap);
     for (const statementId of statementIds) {
         const statementDescription = profilerEntriesDescription.statementMap[statementId];
@@ -83,14 +83,14 @@ export const profilerHandler: SingleFileSubtraceHandler = (
                 }
             }),
         );
-        gasConsumedByStatement[statementId] = totalGasCost;
+        statementToGasConsumed[statementId] = totalGasCost;
     }
     const partialProfilerOutput = {
         [absoluteFileName]: {
             ...profilerEntriesDescription,
             path: absoluteFileName,
             f: {}, // I's meaningless in profiling context
-            s: gasConsumedByStatement,
+            s: statementToGasConsumed,
             b: {}, // I's meaningless in profiling context
         },
     };
diff --git a/packages/sol-resolver/CHANGELOG.json b/packages/sol-resolver/CHANGELOG.json
index d541dc320..e5f4a8ac1 100644
--- a/packages/sol-resolver/CHANGELOG.json
+++ b/packages/sol-resolver/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.2.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.2.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "1.2.1",
         "changes": [
             {
diff --git a/packages/sol-resolver/CHANGELOG.md b/packages/sol-resolver/CHANGELOG.md
index b03f21b79..a48561cc3 100644
--- a/packages/sol-resolver/CHANGELOG.md
+++ b/packages/sol-resolver/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.2.3 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.2.2 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.2.1 - _January 9, 2019_
 
     * Add `absolutePath` to `ContractSource` type (#1461)
diff --git a/packages/sol-resolver/package.json b/packages/sol-resolver/package.json
index b33a4f494..0518cde95 100644
--- a/packages/sol-resolver/package.json
+++ b/packages/sol-resolver/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-resolver",
-    "version": "1.2.1",
+    "version": "1.2.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -23,15 +23,15 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/resolver/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
         "tslint": "5.11.0",
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
         "lodash": "^4.17.5"
     },
     "publishConfig": {
diff --git a/packages/sol-trace/CHANGELOG.json b/packages/sol-trace/CHANGELOG.json
index 223400eae..8157d441e 100644
--- a/packages/sol-trace/CHANGELOG.json
+++ b/packages/sol-trace/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "1.0.0",
         "changes": [
             {
diff --git a/packages/sol-trace/CHANGELOG.md b/packages/sol-trace/CHANGELOG.md
new file mode 100644
index 000000000..ac09a1bbf
--- /dev/null
+++ b/packages/sol-trace/CHANGELOG.md
@@ -0,0 +1,18 @@
+<!--
+changelogUtils.file is auto-generated using the monorepo-scripts package. Don't edit directly.
+Edit the package's CHANGELOG.json file only.
+-->
+
+CHANGELOG
+
+## v1.0.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.1 - _January 11, 2019_
+
+    * Dependencies updated
+
+## v1.0.0 - _Invalid date_
+
+    * Initial release as a separate package. For historical entries see @0x/sol-tracing-utils (#1492)
diff --git a/packages/sol-trace/package.json b/packages/sol-trace/package.json
index 3013be6f9..acae60303 100644
--- a/packages/sol-trace/package.json
+++ b/packages/sol-trace/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-trace",
-    "version": "1.0.0",
+    "version": "1.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,16 +29,16 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-trace/README.md",
     "dependencies": {
-        "@0x/subproviders": "^2.1.8",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/sol-tracing-utils": "^2.1.16",
-        "ethereum-types": "^1.1.4",
+        "@0x/sol-tracing-utils": "^4.0.0",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/typescript-typings": "^3.0.8",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "lodash": "^4.17.5",
         "loglevel": "^1.6.1"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/loglevel": "^1.5.3",
         "@types/node": "*",
         "npm-run-all": "^4.1.2",
diff --git a/packages/sol-trace/src/index.ts b/packages/sol-trace/src/index.ts
index 120c0d0a9..61b5d8cb7 100644
--- a/packages/sol-trace/src/index.ts
+++ b/packages/sol-trace/src/index.ts
@@ -3,6 +3,8 @@ export {
     TruffleArtifactAdapter,
     SolCompilerArtifactAdapter,
     ContractData,
+    SourceCodes,
+    Sources,
 } from '@0x/sol-tracing-utils';
 
 export { RevertTraceSubprovider } from './revert_trace_subprovider';
diff --git a/packages/sol-trace/src/revert_trace_subprovider.ts b/packages/sol-trace/src/revert_trace_subprovider.ts
index 31067a402..fa065cfcb 100644
--- a/packages/sol-trace/src/revert_trace_subprovider.ts
+++ b/packages/sol-trace/src/revert_trace_subprovider.ts
@@ -106,7 +106,8 @@ export class RevertTraceSubprovider extends TraceCollectionSubprovider {
                 continue;
             }
 
-            const fileIndex = contractData.sources.indexOf(sourceRange.fileName);
+            const fileNameToFileIndex = _.invert(contractData.sources);
+            const fileIndex = _.parseInt(fileNameToFileIndex[sourceRange.fileName]);
             const sourceSnippet = getSourceRangeSnippet(sourceRange, contractData.sourceCodes[fileIndex]);
             if (sourceSnippet !== null) {
                 sourceSnippets.push(sourceSnippet);
diff --git a/packages/sol-tracing-utils/CHANGELOG.json b/packages/sol-tracing-utils/CHANGELOG.json
index 9c0b73169..b470d3e87 100644
--- a/packages/sol-tracing-utils/CHANGELOG.json
+++ b/packages/sol-tracing-utils/CHANGELOG.json
@@ -1,12 +1,39 @@
 [
     {
+        "version": "4.0.0",
+        "changes": [
+            {
+                "note": "Fix a bug with incorrect parsing of `sourceMaps` due to sources being in an array instead of a map",
+                "pr": 1498
+            },
+            {
+                "note": "Change the types of `ContractData.sources` and `ContractData.sourceCodes` to be objects instead of arrays",
+                "pr": 1498
+            },
+            {
+                "note": "Use custom JS tracer to speed up tracing on clients that support it (e.g., Geth)",
+                "pr": 1498
+            },
+            {
+                "note": "Log errors encountered in `TraceCollectionSubprovider`",
+                "pr": 1498
+            },
+            {
+                "note": "Add support for assembly statements",
+                "pr": 1498
+            }
+        ],
+        "timestamp": 1547561734
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
                 "note": "Move out specific tools and leave just the shared parts of the codebase",
                 "pr": 1492
             }
-        ]
+        ],
+        "timestamp": 1547225310
     },
     {
         "timestamp": 1547040760,
diff --git a/packages/sol-tracing-utils/CHANGELOG.md b/packages/sol-tracing-utils/CHANGELOG.md
index c2bc3cd01..00d36844c 100644
--- a/packages/sol-tracing-utils/CHANGELOG.md
+++ b/packages/sol-tracing-utils/CHANGELOG.md
@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.0 - _January 15, 2019_
+
+    * Fix a bug with incorrect parsing of `sourceMaps` due to sources being in an array instead of a map (#1498)
+    * Change the types of `ContractData.sources` and `ContractData.sourceCodes` to be objects instead of arrays (#1498)
+    * Use custom JS tracer to speed up tracing on clients that support it (e.g., Geth) (#1498)
+    * Log errors encountered in `TraceCollectionSubprovider` (#1498)
+    * Add support for assembly statements (#1498)
+
+## v3.0.0 - _January 11, 2019_
+
+    * Move out specific tools and leave just the shared parts of the codebase (#1492)
+
 ## v2.1.17 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/sol-tracing-utils/package.json b/packages/sol-tracing-utils/package.json
index 9486ab541..e3e52f42c 100644
--- a/packages/sol-tracing-utils/package.json
+++ b/packages/sol-tracing-utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sol-tracing-utils",
-    "version": "2.1.17",
+    "version": "4.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -42,14 +42,14 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sol-tracing-utils/README.md",
     "dependencies": {
-        "@0x/dev-utils": "^1.0.22",
-        "@0x/sol-compiler": "^2.0.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@types/solidity-parser-antlr": "^0.2.0",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "glob": "^7.1.2",
         "istanbul": "^0.4.5",
@@ -61,7 +61,7 @@
         "solidity-parser-antlr": "^0.2.12"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/istanbul": "^0.4.30",
         "@types/loglevel": "^1.5.3",
         "@types/mkdirp": "^0.5.1",
diff --git a/packages/sol-tracing-utils/src/artifact_adapters/sol_compiler_artifact_adapter.ts b/packages/sol-tracing-utils/src/artifact_adapters/sol_compiler_artifact_adapter.ts
index 57391abbe..d52587f2c 100644
--- a/packages/sol-tracing-utils/src/artifact_adapters/sol_compiler_artifact_adapter.ts
+++ b/packages/sol-tracing-utils/src/artifact_adapters/sol_compiler_artifact_adapter.ts
@@ -5,7 +5,7 @@ import * as glob from 'glob';
 import * as _ from 'lodash';
 import * as path from 'path';
 
-import { ContractData } from '../types';
+import { ContractData, SourceCodes, Sources } from '../types';
 
 import { AbstractArtifactAdapter } from './abstract_artifact_adapter';
 
@@ -43,9 +43,14 @@ export class SolCompilerArtifactAdapter extends AbstractArtifactAdapter {
                 logUtils.warn(`${artifactFileName} doesn't contain bytecode. Skipping...`);
                 continue;
             }
-            let sources = _.keys(artifact.sources);
-            sources = _.map(sources, relativeFilePath => path.resolve(this._sourcesPath, relativeFilePath));
-            const sourceCodes = _.map(sources, (source: string) => fs.readFileSync(source).toString());
+            const sources: Sources = {};
+            const sourceCodes: SourceCodes = {};
+            _.map(artifact.sources, (value: { id: number }, relativeFilePath: string) => {
+                const filePath = path.resolve(this._sourcesPath, relativeFilePath);
+                const fileContent = fs.readFileSync(filePath).toString();
+                sources[value.id] = filePath;
+                sourceCodes[value.id] = fileContent;
+            });
             const contractData = {
                 sourceCodes,
                 sources,
diff --git a/packages/sol-tracing-utils/src/ast_visitor.ts b/packages/sol-tracing-utils/src/ast_visitor.ts
index e55cdf6ec..1ac9cd1de 100644
--- a/packages/sol-tracing-utils/src/ast_visitor.ts
+++ b/packages/sol-tracing-utils/src/ast_visitor.ts
@@ -1,7 +1,7 @@
 import * as _ from 'lodash';
 import * as Parser from 'solidity-parser-antlr';
 
-import { BranchMap, FnMap, LocationByOffset, SingleFileSourceRange, StatementMap } from './types';
+import { BranchMap, FnMap, OffsetToLocation, SingleFileSourceRange, StatementMap } from './types';
 
 export interface CoverageEntriesDescription {
     fnMap: FnMap;
@@ -22,13 +22,13 @@ export class ASTVisitor {
     private readonly _branchMap: BranchMap = {};
     private readonly _modifiersStatementIds: number[] = [];
     private readonly _statementMap: StatementMap = {};
-    private readonly _locationByOffset: LocationByOffset;
+    private readonly _offsetToLocation: OffsetToLocation;
     private readonly _ignoreRangesBeginningAt: number[];
     // keep track of contract/function ranges that are to be ignored
     // so we can also ignore any children nodes within the contract/function
     private readonly _ignoreRangesWithin: Array<[number, number]> = [];
-    constructor(locationByOffset: LocationByOffset, ignoreRangesBeginningAt: number[] = []) {
-        this._locationByOffset = locationByOffset;
+    constructor(offsetToLocation: OffsetToLocation, ignoreRangesBeginningAt: number[] = []) {
+        this._offsetToLocation = offsetToLocation;
         this._ignoreRangesBeginningAt = ignoreRangesBeginningAt;
     }
     public getCollectedCoverageEntries(): CoverageEntriesDescription {
@@ -94,6 +94,39 @@ export class ASTVisitor {
     public InlineAssemblyStatement(ast: Parser.InlineAssemblyStatement): void {
         this._visitStatement(ast);
     }
+    public AssemblyLocalDefinition(ast: Parser.AssemblyLocalDefinition): void {
+        this._visitStatement(ast);
+    }
+    public AssemblyCall(ast: Parser.AssemblyCall): void {
+        this._visitStatement(ast);
+    }
+    public AssemblyIf(ast: Parser.AssemblyIf): void {
+        this._visitStatement(ast);
+    }
+    public AssemblyBlock(ast: Parser.AssemblyBlock): void {
+        this._visitStatement(ast);
+    }
+    public AssemblyExpression(ast: Parser.AssemblyExpression): void {
+        this._visitStatement(ast);
+    }
+    public AssemblyAssignment(ast: Parser.AssemblyAssignment): void {
+        this._visitStatement(ast);
+    }
+    public LabelDefinition(ast: Parser.LabelDefinition): void {
+        this._visitStatement(ast);
+    }
+    public AssemblySwitch(ast: Parser.AssemblySwitch): void {
+        this._visitStatement(ast);
+    }
+    public AssemblyFunctionDefinition(ast: Parser.AssemblyFunctionDefinition): void {
+        this._visitStatement(ast);
+    }
+    public AssemblyFor(ast: Parser.AssemblyFor): void {
+        this._visitStatement(ast);
+    }
+    public SubAssembly(ast: Parser.SubAssembly): void {
+        this._visitStatement(ast);
+    }
     public BinaryOperation(ast: Parser.BinaryOperation): void {
         const BRANCHING_BIN_OPS = ['&&', '||'];
         if (_.includes(BRANCHING_BIN_OPS, ast.operator)) {
@@ -136,8 +169,8 @@ export class ASTVisitor {
     }
     private _getExpressionRange(ast: Parser.ASTNode): SingleFileSourceRange {
         const astRange = ast.range as [number, number];
-        const start = this._locationByOffset[astRange[0]];
-        const end = this._locationByOffset[astRange[1] + 1];
+        const start = this._offsetToLocation[astRange[0]];
+        const end = this._offsetToLocation[astRange[1] + 1];
         const range = {
             start,
             end,
diff --git a/packages/sol-tracing-utils/src/collect_coverage_entries.ts b/packages/sol-tracing-utils/src/collect_coverage_entries.ts
index bdbcd613e..9e3591d74 100644
--- a/packages/sol-tracing-utils/src/collect_coverage_entries.ts
+++ b/packages/sol-tracing-utils/src/collect_coverage_entries.ts
@@ -3,24 +3,24 @@ import * as _ from 'lodash';
 import * as parser from 'solidity-parser-antlr';
 
 import { ASTVisitor, CoverageEntriesDescription } from './ast_visitor';
-import { getLocationByOffset } from './source_maps';
+import { getOffsetToLocation } from './source_maps';
 
 const IGNORE_RE = /\/\*\s*solcov\s+ignore\s+next\s*\*\/\s*/gm;
 
 // Parsing source code for each transaction/code is slow and therefore we cache it
-const coverageEntriesBySourceHash: { [sourceHash: string]: CoverageEntriesDescription } = {};
+const sourceHashToCoverageEntries: { [sourceHash: string]: CoverageEntriesDescription } = {};
 
 export const collectCoverageEntries = (contractSource: string) => {
     const sourceHash = ethUtil.sha3(contractSource).toString('hex');
-    if (_.isUndefined(coverageEntriesBySourceHash[sourceHash]) && !_.isUndefined(contractSource)) {
+    if (_.isUndefined(sourceHashToCoverageEntries[sourceHash]) && !_.isUndefined(contractSource)) {
         const ast = parser.parse(contractSource, { range: true });
-        const locationByOffset = getLocationByOffset(contractSource);
+        const offsetToLocation = getOffsetToLocation(contractSource);
         const ignoreRangesBegingingAt = gatherRangesToIgnore(contractSource);
-        const visitor = new ASTVisitor(locationByOffset, ignoreRangesBegingingAt);
+        const visitor = new ASTVisitor(offsetToLocation, ignoreRangesBegingingAt);
         parser.visit(ast, visitor);
-        coverageEntriesBySourceHash[sourceHash] = visitor.getCollectedCoverageEntries();
+        sourceHashToCoverageEntries[sourceHash] = visitor.getCollectedCoverageEntries();
     }
-    const coverageEntriesDescription = coverageEntriesBySourceHash[sourceHash];
+    const coverageEntriesDescription = sourceHashToCoverageEntries[sourceHash];
     return coverageEntriesDescription;
 };
 
diff --git a/packages/sol-tracing-utils/src/get_source_range_snippet.ts b/packages/sol-tracing-utils/src/get_source_range_snippet.ts
index f578675d3..7aef00fee 100644
--- a/packages/sol-tracing-utils/src/get_source_range_snippet.ts
+++ b/packages/sol-tracing-utils/src/get_source_range_snippet.ts
@@ -13,7 +13,7 @@ interface ASTInfo {
 }
 
 // Parsing source code for each transaction/code is slow and therefore we cache it
-const parsedSourceByHash: { [sourceHash: string]: Parser.ASTNode } = {};
+const hashToParsedSource: { [sourceHash: string]: Parser.ASTNode } = {};
 
 /**
  * Gets the source range snippet by source range to be used by revert trace.
@@ -22,10 +22,10 @@ const parsedSourceByHash: { [sourceHash: string]: Parser.ASTNode } = {};
  */
 export function getSourceRangeSnippet(sourceRange: SourceRange, sourceCode: string): SourceSnippet | null {
     const sourceHash = ethUtil.sha3(sourceCode).toString('hex');
-    if (_.isUndefined(parsedSourceByHash[sourceHash])) {
-        parsedSourceByHash[sourceHash] = Parser.parse(sourceCode, { loc: true });
+    if (_.isUndefined(hashToParsedSource[sourceHash])) {
+        hashToParsedSource[sourceHash] = Parser.parse(sourceCode, { loc: true });
     }
-    const astNode = parsedSourceByHash[sourceHash];
+    const astNode = hashToParsedSource[sourceHash];
     const visitor = new ASTInfoVisitor();
     Parser.visit(astNode, visitor);
     const astInfo = visitor.getASTInfoForRange(sourceRange);
diff --git a/packages/sol-tracing-utils/src/index.ts b/packages/sol-tracing-utils/src/index.ts
index 413e5305e..fdf024ae0 100644
--- a/packages/sol-tracing-utils/src/index.ts
+++ b/packages/sol-tracing-utils/src/index.ts
@@ -22,11 +22,13 @@ export {
     BranchMap,
     EvmCallStackEntry,
     FnMap,
-    LocationByOffset,
+    OffsetToLocation,
     StatementMap,
     TraceInfoBase,
     TraceInfoExistingContract,
     TraceInfoNewContract,
+    Sources,
+    SourceCodes,
 } from './types';
 export { collectCoverageEntries } from './collect_coverage_entries';
 export { TraceCollector, SingleFileSubtraceHandler } from './trace_collector';
diff --git a/packages/sol-tracing-utils/src/source_maps.ts b/packages/sol-tracing-utils/src/source_maps.ts
index af0fb4035..8c17652d9 100644
--- a/packages/sol-tracing-utils/src/source_maps.ts
+++ b/packages/sol-tracing-utils/src/source_maps.ts
@@ -1,7 +1,7 @@
 import * as _ from 'lodash';
 
 import { getPcToInstructionIndexMapping } from './instructions';
-import { LocationByOffset, SourceRange } from './types';
+import { OffsetToLocation, SourceCodes, SourceRange, Sources } from './types';
 
 const RADIX = 10;
 
@@ -15,38 +15,41 @@ export interface SourceLocation {
  * Receives a string with newlines and returns a map of byte offset to LineColumn
  * @param str A string to process
  */
-export function getLocationByOffset(str: string): LocationByOffset {
-    const locationByOffset: LocationByOffset = { 0: { line: 1, column: 0 } };
+export function getOffsetToLocation(str: string): OffsetToLocation {
+    const offsetToLocation: OffsetToLocation = { 0: { line: 1, column: 0 } };
     let currentOffset = 0;
     for (const char of str.split('')) {
-        const location = locationByOffset[currentOffset];
+        const location = offsetToLocation[currentOffset];
         const isNewline = char === '\n';
-        locationByOffset[currentOffset + 1] = {
+        offsetToLocation[currentOffset + 1] = {
             line: location.line + (isNewline ? 1 : 0),
             column: isNewline ? 0 : location.column + 1,
         };
         currentOffset++;
     }
-    return locationByOffset;
+    return offsetToLocation;
 }
 
 /**
  * Parses a sourcemap string.
  * The solidity sourcemap format is documented here: https://github.com/ethereum/solidity/blob/develop/docs/miscellaneous.rst#source-mappings
- * @param sourceCodes sources contents
+ * @param indexToSourceCode index to source code
  * @param srcMap source map string
  * @param bytecodeHex contract bytecode
- * @param sources sources file names
+ * @param indexToSource index to source file path
  */
 export function parseSourceMap(
-    sourceCodes: string[],
+    sourceCodes: SourceCodes,
     srcMap: string,
     bytecodeHex: string,
-    sources: string[],
+    sources: Sources,
 ): { [programCounter: number]: SourceRange } {
     const bytecode = Uint8Array.from(Buffer.from(bytecodeHex, 'hex'));
     const pcToInstructionIndex: { [programCounter: number]: number } = getPcToInstructionIndexMapping(bytecode);
-    const locationByOffsetByFileIndex = _.map(sourceCodes, s => (_.isUndefined(s) ? {} : getLocationByOffset(s)));
+    const fileIndexToOffsetToLocation: { [fileIndex: number]: OffsetToLocation } = {};
+    _.map(sourceCodes, (sourceCode: string, fileIndex: number) => {
+        fileIndexToOffsetToLocation[fileIndex] = _.isUndefined(sourceCode) ? {} : getOffsetToLocation(sourceCode);
+    });
     const entries = srcMap.split(';');
     let lastParsedEntry: SourceLocation = {} as any;
     const instructionIndexToSourceRange: { [instructionIndex: number]: SourceRange } = {};
@@ -66,14 +69,18 @@ export function parseSourceMap(
             length,
             fileIndex,
         };
-        if (parsedEntry.fileIndex !== -1 && !_.isUndefined(locationByOffsetByFileIndex[parsedEntry.fileIndex])) {
+        if (parsedEntry.fileIndex !== -1 && !_.isUndefined(fileIndexToOffsetToLocation[parsedEntry.fileIndex])) {
+            const offsetToLocation = fileIndexToOffsetToLocation[parsedEntry.fileIndex];
             const sourceRange = {
                 location: {
-                    start: locationByOffsetByFileIndex[parsedEntry.fileIndex][parsedEntry.offset],
-                    end: locationByOffsetByFileIndex[parsedEntry.fileIndex][parsedEntry.offset + parsedEntry.length],
+                    start: offsetToLocation[parsedEntry.offset],
+                    end: offsetToLocation[parsedEntry.offset + parsedEntry.length],
                 },
                 fileName: sources[parsedEntry.fileIndex],
             };
+            if (sourceRange.location.start === undefined || sourceRange.location.end === undefined) {
+                throw new Error(`Error while processing sourcemap: location out of range in ${sourceRange.fileName}`);
+            }
             instructionIndexToSourceRange[i] = sourceRange;
         } else {
             // Some assembly code generated by Solidity can't be mapped back to a line of source code.
diff --git a/packages/sol-tracing-utils/src/trace.ts b/packages/sol-tracing-utils/src/trace.ts
index 770080af3..973452b24 100644
--- a/packages/sol-tracing-utils/src/trace.ts
+++ b/packages/sol-tracing-utils/src/trace.ts
@@ -4,21 +4,21 @@ import * as _ from 'lodash';
 
 import { utils } from './utils';
 
-export interface TraceByContractAddress {
+export interface ContractAddressToTraces {
     [contractAddress: string]: StructLog[];
 }
 
 /**
- * Converts linear stack trace to `TraceByContractAddress`.
+ * Converts linear stack trace to `ContractAddressToTraces`.
  * @param structLogs stack trace
  * @param startAddress initial context address
  */
-export function getTracesByContractAddress(structLogs: StructLog[], startAddress: string): TraceByContractAddress {
-    const traceByContractAddress: TraceByContractAddress = {};
+export function getContractAddressToTraces(structLogs: StructLog[], startAddress: string): ContractAddressToTraces {
+    const contractAddressToTraces: ContractAddressToTraces = {};
     let currentTraceSegment = [];
     const addressStack = [startAddress];
     if (_.isEmpty(structLogs)) {
-        return traceByContractAddress;
+        return contractAddressToTraces;
     }
     const normalizedStructLogs = utils.normalizeStructLogs(structLogs);
     // tslint:disable-next-line:prefer-for-of
@@ -45,14 +45,14 @@ export function getTracesByContractAddress(structLogs: StructLog[], startAddress
             const nextStructLog = normalizedStructLogs[i + 1];
             if (nextStructLog.depth !== structLog.depth) {
                 addressStack.push(newAddress);
-                traceByContractAddress[currentAddress] = (traceByContractAddress[currentAddress] || []).concat(
+                contractAddressToTraces[currentAddress] = (contractAddressToTraces[currentAddress] || []).concat(
                     currentTraceSegment,
                 );
                 currentTraceSegment = [];
             }
         } else if (utils.isEndOpcode(structLog.op)) {
             const currentAddress = addressStack.pop() as string;
-            traceByContractAddress[currentAddress] = (traceByContractAddress[currentAddress] || []).concat(
+            contractAddressToTraces[currentAddress] = (contractAddressToTraces[currentAddress] || []).concat(
                 currentTraceSegment,
             );
             currentTraceSegment = [];
@@ -71,7 +71,7 @@ export function getTracesByContractAddress(structLogs: StructLog[], startAddress
             logUtils.warn(
                 "Detected a contract created from within another contract. We currently do not support that scenario. We'll just skip that trace",
             );
-            return traceByContractAddress;
+            return contractAddressToTraces;
         } else {
             if (structLog !== _.last(normalizedStructLogs)) {
                 const nextStructLog = normalizedStructLogs[i + 1];
@@ -79,7 +79,7 @@ export function getTracesByContractAddress(structLogs: StructLog[], startAddress
                     continue;
                 } else if (nextStructLog.depth === structLog.depth - 1) {
                     const currentAddress = addressStack.pop() as string;
-                    traceByContractAddress[currentAddress] = (traceByContractAddress[currentAddress] || []).concat(
+                    contractAddressToTraces[currentAddress] = (contractAddressToTraces[currentAddress] || []).concat(
                         currentTraceSegment,
                     );
                     currentTraceSegment = [];
@@ -94,11 +94,11 @@ export function getTracesByContractAddress(structLogs: StructLog[], startAddress
     }
     if (currentTraceSegment.length !== 0) {
         const currentAddress = addressStack.pop() as string;
-        traceByContractAddress[currentAddress] = (traceByContractAddress[currentAddress] || []).concat(
+        contractAddressToTraces[currentAddress] = (contractAddressToTraces[currentAddress] || []).concat(
             currentTraceSegment,
         );
         currentTraceSegment = [];
         logUtils.warn('Malformed trace. Current trace segment non empty at the end');
     }
-    return traceByContractAddress;
+    return contractAddressToTraces;
 }
diff --git a/packages/sol-tracing-utils/src/trace_collection_subprovider.ts b/packages/sol-tracing-utils/src/trace_collection_subprovider.ts
index 25e38768d..323e1523c 100644
--- a/packages/sol-tracing-utils/src/trace_collection_subprovider.ts
+++ b/packages/sol-tracing-utils/src/trace_collection_subprovider.ts
@@ -1,5 +1,6 @@
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { Callback, ErrorCallback, NextCallback, Subprovider } from '@0x/subproviders';
+import { logUtils } from '@0x/utils';
 import { CallDataRPC, marshaller, Web3Wrapper } from '@0x/web3-wrapper';
 import { JSONRPCRequestPayload, Provider, TxData } from 'ethereum-types';
 import * as _ from 'lodash';
@@ -20,6 +21,23 @@ export interface TraceCollectionSubproviderConfig {
     shouldCollectGasEstimateTraces: boolean;
 }
 
+type AsyncFunc = (...args: any[]) => Promise<void>;
+
+// HACK: This wrapper outputs errors to console even if the promise gets ignored
+// we need this because web3-provider-engine does not handle promises in
+// the after function of next(after).
+function logAsyncErrors(fn: AsyncFunc): AsyncFunc {
+    async function wrappedAsync(...args: any[]): Promise<void> {
+        try {
+            await fn(...args);
+        } catch (err) {
+            logUtils.log(err);
+            throw err;
+        }
+    }
+    return wrappedAsync;
+}
+
 // Because there is no notion of a call trace in the Ethereum rpc - we collect them in a rather non-obvious/hacky way.
 // On each call - we create a snapshot, execute the call as a transaction, get the trace, revert the snapshot.
 // That allows us to avoid influencing test behaviour.
@@ -74,7 +92,7 @@ export abstract class TraceCollectionSubprovider extends Subprovider {
                         next();
                     } else {
                         const txData = payload.params[0];
-                        next(this._onTransactionSentAsync.bind(this, txData));
+                        next(logAsyncErrors(this._onTransactionSentAsync.bind(this, txData)));
                     }
                     return;
 
@@ -83,7 +101,7 @@ export abstract class TraceCollectionSubprovider extends Subprovider {
                         next();
                     } else {
                         const callData = payload.params[0];
-                        next(this._onCallOrGasEstimateExecutedAsync.bind(this, callData));
+                        next(logAsyncErrors(this._onCallOrGasEstimateExecutedAsync.bind(this, callData)));
                     }
                     return;
 
@@ -92,7 +110,7 @@ export abstract class TraceCollectionSubprovider extends Subprovider {
                         next();
                     } else {
                         const estimateGasData = payload.params[0];
-                        next(this._onCallOrGasEstimateExecutedAsync.bind(this, estimateGasData));
+                        next(logAsyncErrors(this._onCallOrGasEstimateExecutedAsync.bind(this, estimateGasData)));
                     }
                     return;
 
diff --git a/packages/sol-tracing-utils/src/trace_collector.ts b/packages/sol-tracing-utils/src/trace_collector.ts
index 943e208cf..f5dde8762 100644
--- a/packages/sol-tracing-utils/src/trace_collector.ts
+++ b/packages/sol-tracing-utils/src/trace_collector.ts
@@ -56,7 +56,7 @@ export class TraceCollector {
         this._singleFileSubtraceHandler = singleFileSubtraceHandler;
     }
     public async writeOutputAsync(): Promise<void> {
-        const finalCoverage = this._collector.getFinalCoverage();
+        const finalCoverage: Coverage = this._collector.getFinalCoverage();
         const stringifiedCoverage = JSON.stringify(finalCoverage, null, '\t');
         await mkdirpAsync('coverage');
         fs.writeFileSync('coverage/coverage.json', stringifiedCoverage);
@@ -80,14 +80,14 @@ export class TraceCollector {
         const bytecodeHex = stripHexPrefix(bytecode);
         const sourceMap = isContractCreation ? contractData.sourceMap : contractData.sourceMapRuntime;
         const pcToSourceRange = parseSourceMap(contractData.sourceCodes, sourceMap, bytecodeHex, contractData.sources);
-        for (let fileIndex = 0; fileIndex < contractData.sources.length; fileIndex++) {
+        _.map(contractData.sources, (_sourcePath: string, fileIndex: string) => {
             const singleFileCoverageForTrace = this._singleFileSubtraceHandler(
                 contractData,
                 traceInfo.subtrace,
                 pcToSourceRange,
-                fileIndex,
+                _.parseInt(fileIndex),
             );
             this._collector.add(singleFileCoverageForTrace);
-        }
+        });
     }
 }
diff --git a/packages/sol-tracing-utils/src/trace_info_subprovider.ts b/packages/sol-tracing-utils/src/trace_info_subprovider.ts
index 635a68f58..b75fc7bf7 100644
--- a/packages/sol-tracing-utils/src/trace_info_subprovider.ts
+++ b/packages/sol-tracing-utils/src/trace_info_subprovider.ts
@@ -1,7 +1,8 @@
+import { NodeType } from '@0x/web3-wrapper';
 import * as _ from 'lodash';
 
 import { constants } from './constants';
-import { getTracesByContractAddress } from './trace';
+import { getContractAddressToTraces } from './trace';
 import { TraceCollectionSubprovider } from './trace_collection_subprovider';
 import { TraceInfo, TraceInfoExistingContract, TraceInfoNewContract } from './types';
 
@@ -12,18 +13,50 @@ export abstract class TraceInfoSubprovider extends TraceCollectionSubprovider {
     protected abstract _handleTraceInfoAsync(traceInfo: TraceInfo): Promise<void>;
     protected async _recordTxTraceAsync(address: string, data: string | undefined, txHash: string): Promise<void> {
         await this._web3Wrapper.awaitTransactionMinedAsync(txHash, 0);
-        const trace = await this._web3Wrapper.getTransactionTraceAsync(txHash, {
-            disableMemory: true,
-            disableStack: false,
-            disableStorage: true,
-        });
-        const tracesByContractAddress = getTracesByContractAddress(trace.structLogs, address);
-        const subcallAddresses = _.keys(tracesByContractAddress);
+        const nodeType = await this._web3Wrapper.getNodeTypeAsync();
+        let trace;
+        if (nodeType === NodeType.Geth) {
+            // For very large traces we use a custom tracer that outputs a format compatible with a
+            // regular trace. We only need the 2nd item on the stack when the instruction is a call.
+            // By not including other stack values, we drastically limit the amount of data to be collected.
+            // There are no good docs about how to write those tracers, but you can find some example ones here:
+            // https://github.com/ethereum/go-ethereum/tree/master/eth/tracers/internal/tracers
+            const tracer = `
+                {
+                    data: [],
+                    step: function(log) {
+                        const op = log.op.toString();
+                        const opn = 0 | log.op.toNumber();
+                        const pc = 0 | log.getPC();
+                        const depth = 0 | log.getDepth();
+                        const gasCost = 0 | log.getCost();
+                        const gas = 0 | log.getGas();
+                        const isCall = opn == 0xf1 || opn == 0xf2 || opn == 0xf4 || opn == 0xf5;
+                        const stack = isCall ? ['0x'+log.stack.peek(1).toString(16), null] : null;
+                        this.data.push({ pc, gasCost, depth, op, stack, gas });
+                    },
+                    fault: function() { },
+                    result: function() { return {structLogs: this.data}; }
+                }
+            `;
+            trace = await this._web3Wrapper.getTransactionTraceAsync(txHash, { tracer, timeout: '600s' });
+        } else {
+            /**
+             * Ganache doesn't support custom tracers yet.
+             */
+            trace = await this._web3Wrapper.getTransactionTraceAsync(txHash, {
+                disableMemory: true,
+                disableStack: false,
+                disableStorage: true,
+            });
+        }
+        const contractAddressToTraces = getContractAddressToTraces(trace.structLogs, address);
+        const subcallAddresses = _.keys(contractAddressToTraces);
         if (address === constants.NEW_CONTRACT) {
             for (const subcallAddress of subcallAddresses) {
                 let traceInfo: TraceInfoNewContract | TraceInfoExistingContract;
                 if (subcallAddress === 'NEW_CONTRACT') {
-                    const traceForThatSubcall = tracesByContractAddress[subcallAddress];
+                    const traceForThatSubcall = contractAddressToTraces[subcallAddress];
                     traceInfo = {
                         subtrace: traceForThatSubcall,
                         txHash,
@@ -32,7 +65,7 @@ export abstract class TraceInfoSubprovider extends TraceCollectionSubprovider {
                     };
                 } else {
                     const runtimeBytecode = await this._web3Wrapper.getContractCodeAsync(subcallAddress);
-                    const traceForThatSubcall = tracesByContractAddress[subcallAddress];
+                    const traceForThatSubcall = contractAddressToTraces[subcallAddress];
                     traceInfo = {
                         subtrace: traceForThatSubcall,
                         txHash,
@@ -45,7 +78,7 @@ export abstract class TraceInfoSubprovider extends TraceCollectionSubprovider {
         } else {
             for (const subcallAddress of subcallAddresses) {
                 const runtimeBytecode = await this._web3Wrapper.getContractCodeAsync(subcallAddress);
-                const traceForThatSubcall = tracesByContractAddress[subcallAddress];
+                const traceForThatSubcall = contractAddressToTraces[subcallAddress];
                 const traceInfo: TraceInfoExistingContract = {
                     subtrace: traceForThatSubcall,
                     txHash,
diff --git a/packages/sol-tracing-utils/src/types.ts b/packages/sol-tracing-utils/src/types.ts
index 54ade0400..27568ae03 100644
--- a/packages/sol-tracing-utils/src/types.ts
+++ b/packages/sol-tracing-utils/src/types.ts
@@ -16,7 +16,7 @@ export interface SingleFileSourceRange {
     end: LineColumn;
 }
 
-export interface LocationByOffset {
+export interface OffsetToLocation {
     [offset: number]: LineColumn;
 }
 
@@ -76,13 +76,20 @@ export interface Coverage {
     };
 }
 
+export interface SourceCodes {
+    [sourceId: number]: string;
+}
+export interface Sources {
+    [sourceId: number]: string;
+}
+
 export interface ContractData {
     bytecode: string;
     sourceMap: string;
     runtimeBytecode: string;
     sourceMapRuntime: string;
-    sourceCodes: string[];
-    sources: string[];
+    sourceCodes: SourceCodes;
+    sources: Sources;
 }
 
 // Part of the trace executed within the same context
diff --git a/packages/sol-tracing-utils/src/utils.ts b/packages/sol-tracing-utils/src/utils.ts
index d8bc65e73..644321f32 100644
--- a/packages/sol-tracing-utils/src/utils.ts
+++ b/packages/sol-tracing-utils/src/utils.ts
@@ -23,6 +23,12 @@ export const utils = {
             utils.compareLineColumn(childRange.end, parentRange.end) <= 0
         );
     },
+    isRangeEqual(childRange: SingleFileSourceRange, parentRange: SingleFileSourceRange): boolean {
+        return (
+            utils.compareLineColumn(parentRange.start, childRange.start) === 0 &&
+            utils.compareLineColumn(childRange.end, parentRange.end) === 0
+        );
+    },
     bytecodeToBytecodeRegex(bytecode: string): string {
         const bytecodeRegex = bytecode
             // Library linking placeholder: __ConvertLib____________________________
diff --git a/packages/sol-tracing-utils/test/source_maps_test.ts b/packages/sol-tracing-utils/test/source_maps_test.ts
index 5820bedd7..330a6a3e1 100644
--- a/packages/sol-tracing-utils/test/source_maps_test.ts
+++ b/packages/sol-tracing-utils/test/source_maps_test.ts
@@ -4,7 +4,7 @@ import * as _ from 'lodash';
 import 'mocha';
 import * as path from 'path';
 
-import { getLocationByOffset, parseSourceMap } from '../src/source_maps';
+import { getOffsetToLocation, parseSourceMap } from '../src/source_maps';
 
 const expect = chai.expect;
 
@@ -15,7 +15,7 @@ const simplestContract = fs.readFileSync(simplestContractFileName).toString();
 describe('source maps', () => {
     describe('#getLocationByOffset', () => {
         it('correctly computes location by offset', () => {
-            const locationByOffset = getLocationByOffset(simplestContract);
+            const offsetToLocation = getOffsetToLocation(simplestContract);
             const expectedLocationByOffset = {
                 '0': { line: 1, column: 0 },
                 '1': { line: 1, column: 1 },
@@ -41,7 +41,7 @@ describe('source maps', () => {
                 '21': { line: 2, column: 1 },
                 '22': { line: 3, column: 0 },
             };
-            expect(locationByOffset).to.be.deep.equal(expectedLocationByOffset);
+            expect(offsetToLocation).to.be.deep.equal(expectedLocationByOffset);
         });
     });
     describe('#parseSourceMap', () => {
diff --git a/packages/sol-tracing-utils/test/trace_test.ts b/packages/sol-tracing-utils/test/trace_test.ts
index 7a034362c..c9ed93e63 100644
--- a/packages/sol-tracing-utils/test/trace_test.ts
+++ b/packages/sol-tracing-utils/test/trace_test.ts
@@ -3,7 +3,7 @@ import { OpCode, StructLog } from 'ethereum-types';
 import * as _ from 'lodash';
 import 'mocha';
 
-import { getTracesByContractAddress } from '../src/trace';
+import { getContractAddressToTraces } from '../src/trace';
 
 const expect = chai.expect;
 
@@ -44,7 +44,7 @@ describe('Trace', () => {
             ];
             const fullTrace = _.map(trace, compactStructLog => addDefaultStructLogFields(compactStructLog));
             const startAddress = '0x0000000000000000000000000000000000000001';
-            const traceByContractAddress = getTracesByContractAddress(fullTrace, startAddress);
+            const traceByContractAddress = getContractAddressToTraces(fullTrace, startAddress);
             const expectedTraceByContractAddress = {
                 [startAddress]: [fullTrace[0], fullTrace[2]],
                 [delegateCallAddress]: [fullTrace[1]],
diff --git a/packages/sra-spec/CHANGELOG.json b/packages/sra-spec/CHANGELOG.json
index 7132d098f..3f2a9fbc1 100644
--- a/packages/sra-spec/CHANGELOG.json
+++ b/packages/sra-spec/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.0.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "1.0.14",
         "changes": [
diff --git a/packages/sra-spec/CHANGELOG.md b/packages/sra-spec/CHANGELOG.md
index 36b6b1fb0..5fe40ccb4 100644
--- a/packages/sra-spec/CHANGELOG.md
+++ b/packages/sra-spec/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.0.16 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.15 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.0.14 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/sra-spec/package.json b/packages/sra-spec/package.json
index a0caea0f4..9c4c0a24f 100644
--- a/packages/sra-spec/package.json
+++ b/packages/sra-spec/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/sra-spec",
-    "version": "1.0.14",
+    "version": "1.0.16",
     "engines": {
         "node": ">=6.12"
     },
@@ -35,11 +35,11 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/sra-spec/README.md",
     "dependencies": {
-        "@0x/json-schemas": "^2.1.5",
+        "@0x/json-schemas": "^2.1.7",
         "@loopback/openapi-v3-types": "^0.8.2"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/mocha": "^2.2.42",
         "@types/node": "^10.5.3",
         "chai": "^4.0.1",
diff --git a/packages/subproviders/CHANGELOG.json b/packages/subproviders/CHANGELOG.json
index c7763214f..dd4dccf4e 100644
--- a/packages/subproviders/CHANGELOG.json
+++ b/packages/subproviders/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "2.1.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "2.1.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "2.1.9",
         "changes": [
diff --git a/packages/subproviders/CHANGELOG.md b/packages/subproviders/CHANGELOG.md
index 076cce935..16457ee2b 100644
--- a/packages/subproviders/CHANGELOG.md
+++ b/packages/subproviders/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.1.11 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v2.1.10 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v2.1.9 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/subproviders/package.json b/packages/subproviders/package.json
index 178e7a99c..d5dc2b052 100644
--- a/packages/subproviders/package.json
+++ b/packages/subproviders/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/subproviders",
-    "version": "2.1.9",
+    "version": "2.1.11",
     "engines": {
         "node": ">=6.12"
     },
@@ -29,11 +29,11 @@
         }
     },
     "dependencies": {
-        "@0x/assert": "^1.0.21",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/assert": "^1.0.23",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@ledgerhq/hw-app-eth": "^4.3.0",
         "@ledgerhq/hw-transport-u2f": "4.24.0",
         "@types/eth-lightwallet": "^3.0.0",
@@ -43,7 +43,7 @@
         "bip39": "^2.5.0",
         "bn.js": "^4.11.8",
         "eth-lightwallet": "^3.0.1",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-tx": "^1.3.5",
         "ethereumjs-util": "^5.1.1",
         "ganache-core": "^2.2.1",
@@ -54,7 +54,7 @@
         "web3-provider-engine": "14.0.6"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/bip39": "^2.4.0",
         "@types/bn.js": "^4.11.0",
         "@types/ethereumjs-tx": "^1.0.0",
diff --git a/packages/testnet-faucets/package.json b/packages/testnet-faucets/package.json
index b01ef4b8e..b6e84698d 100644
--- a/packages/testnet-faucets/package.json
+++ b/packages/testnet-faucets/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@0x/testnet-faucets",
-    "version": "1.0.61",
+    "version": "1.0.63",
     "engines": {
         "node": ">=6.12"
     },
@@ -18,13 +18,13 @@
     "author": "Fabio Berger",
     "license": "Apache-2.0",
     "dependencies": {
-        "0x.js": "^3.0.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "0x.js": "^3.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "body-parser": "^1.17.1",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-tx": "^1.3.5",
         "ethereumjs-util": "^5.1.1",
         "express": "^4.15.2",
@@ -32,7 +32,7 @@
         "rollbar": "^0.6.5"
     },
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/body-parser": "^1.16.1",
         "@types/express": "^4.0.35",
         "@types/lodash": "4.14.104",
diff --git a/packages/testnet-faucets/src/ts/handler.ts b/packages/testnet-faucets/src/ts/handler.ts
index 2dfa3c3af..8f642d4b0 100644
--- a/packages/testnet-faucets/src/ts/handler.ts
+++ b/packages/testnet-faucets/src/ts/handler.ts
@@ -36,9 +36,9 @@ interface ItemByNetworkId<T> {
 }
 
 enum RequestedAssetType {
-    ETH = 'ETH',
-    WETH = 'WETH',
-    ZRX = 'ZRX',
+    ETH = 'ETH', // tslint:disable-line:enum-naming
+    WETH = 'WETH', // tslint:disable-line:enum-naming
+    ZRX = 'ZRX', // tslint:disable-line:enum-naming
 }
 
 const FIVE_DAYS_IN_MS = 4.32e8; // TODO: make this configurable
diff --git a/packages/tslint-config/CHANGELOG.json b/packages/tslint-config/CHANGELOG.json
index ccf87e354..fe34592fd 100644
--- a/packages/tslint-config/CHANGELOG.json
+++ b/packages/tslint-config/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "2.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "2.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "2.0.0",
         "changes": [
             {
diff --git a/packages/tslint-config/CHANGELOG.md b/packages/tslint-config/CHANGELOG.md
index 3cebb1e95..37d287c10 100644
--- a/packages/tslint-config/CHANGELOG.md
+++ b/packages/tslint-config/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v2.0.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v2.0.0 - _December 13, 2018_
 
     * Improve async-suffix rule to check functions too, not just methods (#1425)
diff --git a/packages/tslint-config/package.json b/packages/tslint-config/package.json
index 64ec1e967..f90321edb 100644
--- a/packages/tslint-config/package.json
+++ b/packages/tslint-config/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/tslint-config",
-    "version": "2.0.0",
+    "version": "2.0.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -9,6 +9,7 @@
     "scripts": {
         "build": "tsc -b",
         "build:ci": "yarn build",
+        "test": "mocha ./lib/test/*.spec.js",
         "clean": "shx rm -rf lib",
         "lint": "tslint --format stylish --project ."
     },
diff --git a/packages/tslint-config/rules/enumNamingRule.ts b/packages/tslint-config/rules/enumNamingRule.ts
new file mode 100644
index 000000000..56499618f
--- /dev/null
+++ b/packages/tslint-config/rules/enumNamingRule.ts
@@ -0,0 +1,60 @@
+import * as Lint from 'tslint';
+import * as ts from 'typescript';
+
+export class Rule extends Lint.Rules.AbstractRule {
+    public static FAILURE_STRING = `Enum member names should be PascalCase`;
+
+    public apply(sourceFile: ts.SourceFile): Lint.RuleFailure[] {
+        return this.applyWithFunction(sourceFile, walk);
+    }
+}
+
+function walk(ctx: Lint.WalkContext<void>): void {
+    // Recursively walk the AST starting with root node, `ctx.sourceFile`.
+    // Call the function `cb` (defined below) for each child.
+    return ts.forEachChild(ctx.sourceFile, cb);
+
+    function cb(node: ts.Node): void {
+        if (node.kind === ts.SyntaxKind.EnumMember) {
+            const keyNode = node.getFirstToken(ctx.sourceFile);
+            if (keyNode !== undefined) {
+                const keyText = keyNode.getText(ctx.sourceFile);
+                if (!isPascalCase(keyText)) {
+                    return ctx.addFailureAtNode(node, Rule.FAILURE_STRING, getFix(keyText, node));
+                }
+            }
+        }
+        // Continue recursion into the AST by calling function `cb` for every child of the current node.
+        return ts.forEachChild(node, cb);
+    }
+
+    function getFix(text: string, node: ts.Node): Lint.Replacement {
+        let fix = toPascalCase(text);
+        // check for `member = value`
+        if (node.getChildCount(ctx.sourceFile) === 3) {
+            const value = node.getLastToken(ctx.sourceFile);
+            if (value !== undefined) {
+                fix += ` = ${value.getText(ctx.sourceFile)}`;
+            }
+        }
+        return new Lint.Replacement(node.getStart(ctx.sourceFile), node.getWidth(ctx.sourceFile), fix);
+    }
+}
+
+// Modified from: https://github.com/jonschlinkert/pascalcase/
+function toPascalCase(str: string): string {
+    let result = str.replace(/([a-z0-9\W])([A-Z])/g, '$1 $2');
+    if (result.length === 1) {
+        return result.toUpperCase();
+    }
+    result = result.replace(/^[\W_\.]+|[\W_\.]+$/g, '').toLowerCase();
+    result = result.charAt(0).toUpperCase() + result.slice(1);
+    return result.replace(/[\W_\.]+(\w|$)/g, (_, ch) => {
+        return ch.toUpperCase();
+    });
+}
+function isPascalCase(s: string): boolean {
+    const regex = /^([A-Z0-9]+[a-z0-9]+)+$/g;
+    const key = s.split('=')[0].trim();
+    return regex.test(key);
+}
diff --git a/packages/tslint-config/test/enumNamingSpec.spec.ts b/packages/tslint-config/test/enumNamingSpec.spec.ts
new file mode 100644
index 000000000..d5b864eba
--- /dev/null
+++ b/packages/tslint-config/test/enumNamingSpec.spec.ts
@@ -0,0 +1,88 @@
+import * as assert from 'assert';
+
+import { Rule } from '../rules/enumNamingRule';
+
+import { getFixedResult, helper } from './lintrunner';
+const rule = 'enum-naming';
+
+describe('enumNamingRule', () => {
+    it(`should not fail PascalCase`, () => {
+        const src = `enum test { MemberOne, MemberTwo }`;
+        const result = helper(src, rule);
+        assert.equal(result.errorCount, 0);
+    });
+    it(`should not fail PascalCase keys with uncased values`, () => {
+        const src = `enum test { MemberOne = 'member_one', MemberTwo = 'member two' }`;
+        const result = helper(src, rule);
+        assert.equal(result.errorCount, 0);
+    });
+    it(`should not fail PascalCase keys with numbers`, () => {
+        const src = `enum test { Member1 = 'member_one', MemberTwo = 'member two' }`;
+        const result = helper(src, rule);
+        assert.equal(result.errorCount, 0);
+    });
+    it(`should fail with camelCase`, () => {
+        const src = `enum test { memberOne, memberTwo }`;
+        const result = helper(src, rule);
+        assert.equal(result.errorCount, 2);
+    });
+    it(`should fail with snake case`, () => {
+        const src = `enum test { member_one, member_two }`;
+        const result = helper(src, rule);
+        assert.equal(result.errorCount, 2);
+    });
+    it(`should fail with all caps`, () => {
+        const src = `enum test { MEMBERONE, MEMBER_TWO }`;
+        const result = helper(src, rule);
+        assert.equal(result.errorCount, 2);
+    });
+    it(`should fail with mixed case`, () => {
+        const src = `enum test { member_one, MemberTwo }`;
+        const result = helper(src, rule);
+        assert.equal(result.errorCount, 1);
+    });
+
+    it(`should fail with the right position`, () => {
+        const src = `enum test { MemberOne, member_two }`;
+        const startPosition = src.indexOf('member_two');
+        const endPosition = startPosition + 'member_two'.length;
+        const failure = helper(src, rule).failures[0];
+
+        assert.equal(failure.getStartPosition().getPosition(), startPosition);
+        assert.equal(failure.getEndPosition().getPosition(), endPosition);
+        assert.equal(failure.getFailure(), Rule.FAILURE_STRING);
+    });
+
+    it(`should fail with the right message`, () => {
+        const src = `enum test { memberOne, memberTwo }`;
+        const failure = helper(src, rule).failures[0];
+
+        assert.equal(failure.getFailure(), Rule.FAILURE_STRING);
+    });
+});
+describe('enumNaming fixer', () => {
+    it('should fix keys', () => {
+        const src = `enum test { MemberOne, memberTwo, member_three, MEMBER_FOUR, MEMBERFIVE }`;
+        const expected = `enum test { MemberOne, MemberTwo, MemberThree, MemberFour, Memberfive }`;
+        const actual = getFixedResult(src, rule);
+        const result = helper(src, rule);
+        assert.equal(result.errorCount, 4); // tslint:disable-line:custom-no-magic-numbers
+        assert.equal(actual, expected);
+    });
+    it('should not fix values', () => {
+        const src = `enum test { MemberOne = 'MemberOne', memberTwo = 'memberTwo', member_three = 'member_three', MEMBER_FOUR = 'MEMBER_FOUR' }`;
+        const expected = `enum test { MemberOne = 'MemberOne', MemberTwo = 'memberTwo', MemberThree = 'member_three', MemberFour = 'MEMBER_FOUR' }`;
+        const actual = getFixedResult(src, rule);
+        const result = helper(src, rule);
+        assert.equal(result.errorCount, 3); // tslint:disable-line:custom-no-magic-numbers
+        assert.equal(actual, expected);
+    });
+    it('should preserve values with equals sign', () => {
+        const src = `enum Operators { assign = '=', EQUALS = '==', Triple_Equals = '===' }`;
+        const expected = `enum Operators { Assign = '=', Equals = '==', TripleEquals = '===' }`;
+        const actual = getFixedResult(src, rule);
+        const result = helper(src, rule);
+        assert.equal(result.errorCount, 3); // tslint:disable-line:custom-no-magic-numbers
+        assert.equal(actual, expected);
+    });
+});
diff --git a/packages/tslint-config/test/lintrunner.ts b/packages/tslint-config/test/lintrunner.ts
new file mode 100644
index 000000000..fcd1b6844
--- /dev/null
+++ b/packages/tslint-config/test/lintrunner.ts
@@ -0,0 +1,23 @@
+import * as path from 'path';
+import { Configuration, Linter, Replacement } from 'tslint';
+
+export const helper = (src: string, rule: string) => {
+    const linter = new Linter({ fix: false });
+    linter.lint(
+        '',
+        src,
+        Configuration.parseConfigFile({
+            rules: {
+                [rule]: true,
+            },
+            rulesDirectory: path.join(__dirname, '../rules'),
+        }),
+    );
+    return linter.getResult();
+};
+
+export const getFixedResult = (src: string, rule: string) => {
+    const result = helper(src, rule);
+    const fixes = [].concat.apply(result.failures.map(x => x.getFix()));
+    return Replacement.applyFixes(src, fixes);
+};
diff --git a/packages/tslint-config/tsconfig.json b/packages/tslint-config/tsconfig.json
index 44845cf1f..b9a4dd03e 100644
--- a/packages/tslint-config/tsconfig.json
+++ b/packages/tslint-config/tsconfig.json
@@ -2,7 +2,7 @@
     "extends": "../../tsconfig",
     "compilerOptions": {
         "outDir": "lib",
-        "rootDir": "rules"
+        "rootDir": "."
     },
-    "include": ["./rules/**/*"]
+    "include": ["./rules/**/*", "test/**/*"]
 }
diff --git a/packages/tslint-config/tslint.json b/packages/tslint-config/tslint.json
index e8de6221e..a5fa6962c 100644
--- a/packages/tslint-config/tslint.json
+++ b/packages/tslint-config/tslint.json
@@ -25,6 +25,7 @@
         "curly": true,
         "custom-no-magic-numbers": [true, 0, 1, 2, 3, -1],
         "encoding": true,
+        "enum-naming": true,
         "eofline": true,
         "import-spacing": true,
         "indent": [true, "spaces", 4],
@@ -125,5 +126,5 @@
             "check-preblock"
         ]
     },
-    "rulesDirectory": "lib"
+    "rulesDirectory": "lib/rules"
 }
diff --git a/packages/types/CHANGELOG.json b/packages/types/CHANGELOG.json
index dab7e6825..40a46ac84 100644
--- a/packages/types/CHANGELOG.json
+++ b/packages/types/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "1.5.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.5.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "1.5.0",
         "changes": [
             {
diff --git a/packages/types/CHANGELOG.md b/packages/types/CHANGELOG.md
index a1745cf94..ac27d9096 100644
--- a/packages/types/CHANGELOG.md
+++ b/packages/types/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.5.2 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.5.1 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v1.5.0 - _January 9, 2019_
 
     * Added types for Dutch Auction contract (#1465)
diff --git a/packages/types/package.json b/packages/types/package.json
index 75c3b7c63..2fea809bc 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/types",
-    "version": "1.5.0",
+    "version": "1.5.2",
     "engines": {
         "node": ">=6.12"
     },
@@ -23,7 +23,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/types/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
         "tslint": "5.11.0",
@@ -32,7 +32,7 @@
     "dependencies": {
         "@types/node": "*",
         "bignumber.js": "~4.1.0",
-        "ethereum-types": "^1.1.4"
+        "ethereum-types": "^1.1.6"
     },
     "publishConfig": {
         "access": "public"
diff --git a/packages/typescript-typings/CHANGELOG.json b/packages/typescript-typings/CHANGELOG.json
index eb92e773d..cc7ef7fa4 100644
--- a/packages/typescript-typings/CHANGELOG.json
+++ b/packages/typescript-typings/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "3.0.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "3.0.7",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.6",
         "changes": [
             {
diff --git a/packages/typescript-typings/CHANGELOG.md b/packages/typescript-typings/CHANGELOG.md
index 1663d40af..8f23cce14 100644
--- a/packages/typescript-typings/CHANGELOG.md
+++ b/packages/typescript-typings/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.8 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v3.0.7 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v3.0.6 - _December 13, 2018_
 
     * Dependencies updated
diff --git a/packages/typescript-typings/package.json b/packages/typescript-typings/package.json
index c67b660c8..6640760e4 100644
--- a/packages/typescript-typings/package.json
+++ b/packages/typescript-typings/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/typescript-typings",
-    "version": "3.0.6",
+    "version": "3.0.8",
     "engines": {
         "node": ">=6.12"
     },
@@ -27,7 +27,7 @@
         "@types/bn.js": "^4.11.0",
         "@types/react": "*",
         "bignumber.js": "~4.1.0",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "popper.js": "1.14.3"
     },
     "devDependencies": {
diff --git a/packages/utils/CHANGELOG.json b/packages/utils/CHANGELOG.json
index 6b4bc3e82..851c106d8 100644
--- a/packages/utils/CHANGELOG.json
+++ b/packages/utils/CHANGELOG.json
@@ -1,12 +1,22 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "3.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "version": "3.0.0",
         "changes": [
             {
                 "note": "Make `promisify` resolve when the callback error is undefined.",
                 "pr": 1501
             }
-        ]
+        ],
+        "timestamp": 1547225310
     },
     {
         "version": "2.1.1",
diff --git a/packages/utils/CHANGELOG.md b/packages/utils/CHANGELOG.md
index 15d78e321..ed3f00158 100644
--- a/packages/utils/CHANGELOG.md
+++ b/packages/utils/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.0.1 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v3.0.0 - _January 11, 2019_
+
+    * Make `promisify` resolve when the callback error is undefined. (#1501)
+
 ## v2.1.1 - _January 9, 2019_
 
     * Add `should` prefix to names of properties in EncodingRules and DecodingRules (#1363)
diff --git a/packages/utils/package.json b/packages/utils/package.json
index 49d6e3013..315f5a08f 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/utils",
-    "version": "2.1.1",
+    "version": "3.0.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -28,7 +28,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/utils/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/detect-node": "2.0.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
@@ -44,14 +44,14 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.6",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
         "@types/node": "*",
         "abortcontroller-polyfill": "^1.1.9",
         "bignumber.js": "~4.1.0",
         "chalk": "^2.4.1",
         "detect-node": "2.0.3",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "ethers": "~4.0.4",
         "isomorphic-fetch": "^2.2.1",
diff --git a/packages/utils/src/abi_encoder/abstract_data_types/data_type.ts b/packages/utils/src/abi_encoder/abstract_data_types/data_type.ts
index 13cc87e2a..f23324721 100644
--- a/packages/utils/src/abi_encoder/abstract_data_types/data_type.ts
+++ b/packages/utils/src/abi_encoder/abstract_data_types/data_type.ts
@@ -51,8 +51,26 @@ export abstract class DataType {
         return value;
     }
 
+    public decodeAsArray(returndata: string, rules?: DecodingRules): any[] {
+        const value = this.decode(returndata, rules);
+        const valuesAsArray = _.isObject(value) ? _.values(value) : [value];
+        return valuesAsArray;
+    }
+
+    public getSignature(isDetailed?: boolean): string {
+        if (_.isEmpty(this._dataItem.name) || !isDetailed) {
+            return this.getSignatureType();
+        }
+        const name = this.getDataItem().name;
+        const lastIndexOfScopeDelimiter = name.lastIndexOf('.');
+        const isScopedName = !_.isUndefined(lastIndexOfScopeDelimiter) && lastIndexOfScopeDelimiter > 0;
+        const shortName = isScopedName ? name.substr((lastIndexOfScopeDelimiter as number) + 1) : name;
+        const detailedSignature = `${shortName} ${this.getSignatureType()}`;
+        return detailedSignature;
+    }
+
     public abstract generateCalldataBlock(value: any, parentBlock?: CalldataBlock): CalldataBlock;
     public abstract generateValue(calldata: RawCalldata, rules: DecodingRules): any;
-    public abstract getSignature(): string;
+    public abstract getSignatureType(): string;
     public abstract isStatic(): boolean;
 }
diff --git a/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts b/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts
index 00059a4b6..2c6c4b0f6 100644
--- a/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts
+++ b/packages/utils/src/abi_encoder/abstract_data_types/types/set.ts
@@ -1,3 +1,4 @@
+import { ObjectMap } from '@0x/types';
 import { DataItem } from 'ethereum-types';
 import * as ethUtil from 'ethereumjs-util';
 import * as _ from 'lodash';
@@ -134,31 +135,26 @@ export abstract class AbstractSetDataType extends DataType {
         const block = new SetCalldataBlock(this.getDataItem().name, this.getSignature(), parentName);
         // Create blocks for members of set.
         const memberCalldataBlocks: CalldataBlock[] = [];
-        const childMap = _.cloneDeep(this._memberIndexByName);
-        _.forOwn(obj, (value: any, key: string) => {
-            if (!(key in childMap)) {
+        _.forEach(this._memberIndexByName, (memberIndex: number, memberName: string) => {
+            if (!(memberName in obj)) {
                 throw new Error(
-                    `Could not assign tuple to object: unrecognized key '${key}' in object ${this.getDataItem().name}`,
+                    `Could not assign tuple to object: missing key '${memberName}' in object ${JSON.stringify(obj)}`,
                 );
             }
-            const memberBlock = this._members[this._memberIndexByName[key]].generateCalldataBlock(value, block);
+            const memberValue: any = (obj as ObjectMap<any>)[memberName];
+            const memberBlock = this._members[memberIndex].generateCalldataBlock(memberValue, block);
             memberCalldataBlocks.push(memberBlock);
-            delete childMap[key];
         });
-        // Sanity check that all members have been included.
-        if (Object.keys(childMap).length !== 0) {
-            throw new Error(`Could not assign tuple to object: missing keys ${Object.keys(childMap)}`);
-        }
         // Associate member blocks with Set block.
         block.setMembers(memberCalldataBlocks);
         return block;
     }
 
-    protected _computeSignatureOfMembers(): string {
+    protected _computeSignatureOfMembers(isDetailed?: boolean): string {
         // Compute signature of members
         let signature = `(`;
         _.each(this._members, (member: DataType, i: number) => {
-            signature += member.getSignature();
+            signature += member.getSignature(isDetailed);
             if (i < this._members.length - 1) {
                 signature += ',';
             }
@@ -179,17 +175,27 @@ export abstract class AbstractSetDataType extends DataType {
         // Create one member for each component of `dataItem`
         const members: DataType[] = [];
         const memberIndexByName: MemberIndexByName = {};
+        const memberNames: string[] = [];
         _.each(dataItem.components, (memberItem: DataItem) => {
+            // If a component with `name` already exists then
+            // rename to `name_nameIdx` to avoid naming conflicts.
+            let memberName = memberItem.name;
+            let nameIdx = 0;
+            while (_.includes(memberNames, memberName) || _.isEmpty(memberName)) {
+                nameIdx++;
+                memberName = `${memberItem.name}_${nameIdx}`;
+            }
+            memberNames.push(memberName);
             const childDataItem: DataItem = {
                 type: memberItem.type,
-                name: `${dataItem.name}.${memberItem.name}`,
+                name: `${dataItem.name}.${memberName}`,
             };
             const components = memberItem.components;
             if (!_.isUndefined(components)) {
                 childDataItem.components = components;
             }
             const child = this.getFactory().create(childDataItem, this);
-            memberIndexByName[memberItem.name] = members.length;
+            memberIndexByName[memberName] = members.length;
             members.push(child);
         });
         return [members, memberIndexByName];
diff --git a/packages/utils/src/abi_encoder/evm_data_type_factory.ts b/packages/utils/src/abi_encoder/evm_data_type_factory.ts
index 4cc124e0a..268649148 100644
--- a/packages/utils/src/abi_encoder/evm_data_type_factory.ts
+++ b/packages/utils/src/abi_encoder/evm_data_type_factory.ts
@@ -2,6 +2,8 @@
 import { DataItem, MethodAbi } from 'ethereum-types';
 import * as _ from 'lodash';
 
+import { generateDataItemsFromSignature } from './utils/signature_parser';
+
 import { DataType } from './abstract_data_types/data_type';
 import { DataTypeFactory } from './abstract_data_types/interfaces';
 import { AddressDataType } from './evm_data_types/address';
@@ -129,4 +131,35 @@ export class EvmDataTypeFactory implements DataTypeFactory {
 
     private constructor() {}
 }
+
+/**
+ * Convenience function for creating a DataType from different inputs.
+ * @param input A single or set of DataItem or a DataType signature.
+ *              A signature in the form of '<type>' is interpreted as a `DataItem`
+ *              For example, 'string' is interpreted as {type: 'string'}
+ *              A signature in the form '(<type1>, <type2>, ..., <typen>)' is interpreted as `DataItem[]`
+ *              For eaxmple, '(string, uint256)' is interpreted as [{type: 'string'}, {type: 'uint256'}]
+ * @return DataType corresponding to input.
+ */
+export function create(input: DataItem | DataItem[] | string): DataType {
+    // Handle different types of input
+    const isSignature = typeof input === 'string';
+    const isTupleSignature = isSignature && (input as string).startsWith('(');
+    const shouldParseAsTuple = isTupleSignature || _.isArray(input);
+    // Create input `dataItem`
+    let dataItem: DataItem;
+    if (shouldParseAsTuple) {
+        const dataItems = isSignature ? generateDataItemsFromSignature(input as string) : (input as DataItem[]);
+        dataItem = {
+            name: '',
+            type: 'tuple',
+            components: dataItems,
+        };
+    } else {
+        dataItem = isSignature ? generateDataItemsFromSignature(input as string)[0] : (input as DataItem);
+    }
+    // Create data type
+    const dataType = EvmDataTypeFactory.getInstance().create(dataItem);
+    return dataType;
+}
 /* tslint:enable no-construct */
diff --git a/packages/utils/src/abi_encoder/evm_data_types/address.ts b/packages/utils/src/abi_encoder/evm_data_types/address.ts
index 2e3a206c6..2278830eb 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/address.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/address.ts
@@ -39,10 +39,11 @@ export class AddressDataType extends AbstractBlobDataType {
         const valueBufPadded = calldata.popWord();
         const valueBuf = valueBufPadded.slice(AddressDataType._DECODED_ADDRESS_OFFSET_IN_BYTES);
         const value = ethUtil.bufferToHex(valueBuf);
-        return value;
+        const valueLowercase = _.toLower(value);
+        return valueLowercase;
     }
 
-    public getSignature(): string {
+    public getSignatureType(): string {
         return SolidityTypes.Address;
     }
     /* tslint:enable prefer-function-over-method */
diff --git a/packages/utils/src/abi_encoder/evm_data_types/array.ts b/packages/utils/src/abi_encoder/evm_data_types/array.ts
index 7595cb667..d9607f47e 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/array.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/array.ts
@@ -7,7 +7,6 @@ import { constants } from '../utils/constants';
 
 export class ArrayDataType extends AbstractSetDataType {
     private static readonly _MATCHER = RegExp('^(.+)\\[([0-9]*)\\]$');
-    private readonly _arraySignature: string;
     private readonly _elementType: string;
 
     public static matchType(type: string): boolean {
@@ -35,25 +34,36 @@ export class ArrayDataType extends AbstractSetDataType {
         super(dataItem, dataTypeFactory, isArray, arrayLength, arrayElementType);
         // Set array properties
         this._elementType = arrayElementType;
-        this._arraySignature = this._computeSignature();
     }
 
-    public getSignature(): string {
-        return this._arraySignature;
+    public getSignatureType(): string {
+        return this._computeSignature(false);
     }
 
-    private _computeSignature(): string {
+    public getSignature(isDetailed?: boolean): string {
+        if (_.isEmpty(this.getDataItem().name) || !isDetailed) {
+            return this.getSignatureType();
+        }
+        const name = this.getDataItem().name;
+        const lastIndexOfScopeDelimiter = name.lastIndexOf('.');
+        const isScopedName = !_.isUndefined(lastIndexOfScopeDelimiter) && lastIndexOfScopeDelimiter > 0;
+        const shortName = isScopedName ? name.substr((lastIndexOfScopeDelimiter as number) + 1) : name;
+        const detailedSignature = `${shortName} ${this._computeSignature(isDetailed)}`;
+        return detailedSignature;
+    }
+
+    private _computeSignature(isDetailed?: boolean): string {
         // Compute signature for a single array element
         const elementDataItem: DataItem = {
             type: this._elementType,
-            name: 'N/A',
+            name: '',
         };
         const elementComponents = this.getDataItem().components;
         if (!_.isUndefined(elementComponents)) {
             elementDataItem.components = elementComponents;
         }
         const elementDataType = this.getFactory().create(elementDataItem);
-        const elementSignature = elementDataType.getSignature();
+        const elementSignature = elementDataType.getSignature(isDetailed);
         // Construct signature for array of type `element`
         if (_.isUndefined(this._arrayLength)) {
             return `${elementSignature}[]`;
diff --git a/packages/utils/src/abi_encoder/evm_data_types/bool.ts b/packages/utils/src/abi_encoder/evm_data_types/bool.ts
index d713d5a94..7f91f34e6 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/bool.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/bool.ts
@@ -46,7 +46,7 @@ export class BoolDataType extends AbstractBlobDataType {
         return value;
     }
 
-    public getSignature(): string {
+    public getSignatureType(): string {
         return SolidityTypes.Bool;
     }
     /* tslint:enable prefer-function-over-method */
diff --git a/packages/utils/src/abi_encoder/evm_data_types/dynamic_bytes.ts b/packages/utils/src/abi_encoder/evm_data_types/dynamic_bytes.ts
index 5277efd6c..fa38b63c0 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/dynamic_bytes.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/dynamic_bytes.ts
@@ -65,7 +65,7 @@ export class DynamicBytesDataType extends AbstractBlobDataType {
         return value;
     }
 
-    public getSignature(): string {
+    public getSignatureType(): string {
         return SolidityTypes.Bytes;
     }
     /* tslint:enable prefer-function-over-method */
diff --git a/packages/utils/src/abi_encoder/evm_data_types/int.ts b/packages/utils/src/abi_encoder/evm_data_types/int.ts
index f1dcf5ea1..8d98e195b 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/int.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/int.ts
@@ -47,13 +47,17 @@ export class IntDataType extends AbstractBlobDataType {
         return encodedValue;
     }
 
-    public decodeValue(calldata: RawCalldata): BigNumber {
+    public decodeValue(calldata: RawCalldata): BigNumber | number {
         const valueBuf = calldata.popWord();
         const value = EncoderMath.safeDecodeNumericValue(valueBuf, this._minValue, this._maxValue);
+        const numberOfBytesInUint8 = 8;
+        if (this._width === numberOfBytesInUint8) {
+            return value.toNumber();
+        }
         return value;
     }
 
-    public getSignature(): string {
+    public getSignatureType(): string {
         return `${SolidityTypes.Int}${this._width}`;
     }
 }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/method.ts b/packages/utils/src/abi_encoder/evm_data_types/method.ts
index b1cd1377f..c852a0fdf 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/method.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/method.ts
@@ -44,7 +44,20 @@ export class MethodDataType extends AbstractSetDataType {
         return returnValues;
     }
 
-    public getSignature(): string {
+    public strictDecodeReturnValue<T>(returndata: string, rules?: DecodingRules): T {
+        const returnValues = this._returnDataType.decode(returndata, rules);
+        const returnValuesAsArray: any = _.isObject(returnValues) ? _.values(returnValues) : [returnValues];
+        switch (returnValuesAsArray.length) {
+            case 0:
+                return undefined as any;
+            case 1:
+                return returnValuesAsArray[0];
+            default:
+                return returnValuesAsArray;
+        }
+    }
+
+    public getSignatureType(): string {
         return this._methodSignature;
     }
 
diff --git a/packages/utils/src/abi_encoder/evm_data_types/pointer.ts b/packages/utils/src/abi_encoder/evm_data_types/pointer.ts
index 389e75927..250db7c64 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/pointer.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/pointer.ts
@@ -11,7 +11,11 @@ export class PointerDataType extends AbstractPointerDataType {
         super(dataItem, dataTypeFactory, destDataType, parentDataType);
     }
 
-    public getSignature(): string {
-        return this._destination.getSignature();
+    public getSignatureType(): string {
+        return this._destination.getSignature(false);
+    }
+
+    public getSignature(isDetailed?: boolean): string {
+        return this._destination.getSignature(isDetailed);
     }
 }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts b/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts
index 2e371c505..cbf1957d7 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/static_bytes.ts
@@ -36,7 +36,7 @@ export class StaticBytesDataType extends AbstractBlobDataType {
         this._width = StaticBytesDataType._decodeWidthFromType(dataItem.type);
     }
 
-    public getSignature(): string {
+    public getSignatureType(): string {
         // Note that `byte` reduces to `bytes1`
         return `${SolidityTypes.Bytes}${this._width}`;
     }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/string.ts b/packages/utils/src/abi_encoder/evm_data_types/string.ts
index 91a72ad3f..97ac46442 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/string.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/string.ts
@@ -52,7 +52,7 @@ export class StringDataType extends AbstractBlobDataType {
         return value;
     }
 
-    public getSignature(): string {
+    public getSignatureType(): string {
         return SolidityTypes.String;
     }
     /* tslint:enable prefer-function-over-method */
diff --git a/packages/utils/src/abi_encoder/evm_data_types/tuple.ts b/packages/utils/src/abi_encoder/evm_data_types/tuple.ts
index 31593c882..5000c85e8 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/tuple.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/tuple.ts
@@ -1,11 +1,10 @@
 import { DataItem, SolidityTypes } from 'ethereum-types';
+import * as _ from 'lodash';
 
 import { DataTypeFactory } from '../abstract_data_types/interfaces';
 import { AbstractSetDataType } from '../abstract_data_types/types/set';
 
 export class TupleDataType extends AbstractSetDataType {
-    private readonly _signature: string;
-
     public static matchType(type: string): boolean {
         return type === SolidityTypes.Tuple;
     }
@@ -15,10 +14,21 @@ export class TupleDataType extends AbstractSetDataType {
         if (!TupleDataType.matchType(dataItem.type)) {
             throw new Error(`Tried to instantiate Tuple with bad input: ${dataItem}`);
         }
-        this._signature = this._computeSignatureOfMembers();
     }
 
-    public getSignature(): string {
-        return this._signature;
+    public getSignatureType(): string {
+        return this._computeSignatureOfMembers(false);
+    }
+
+    public getSignature(isDetailed?: boolean): string {
+        if (_.isEmpty(this.getDataItem().name) || !isDetailed) {
+            return this.getSignatureType();
+        }
+        const name = this.getDataItem().name;
+        const lastIndexOfScopeDelimiter = name.lastIndexOf('.');
+        const isScopedName = !_.isUndefined(lastIndexOfScopeDelimiter) && lastIndexOfScopeDelimiter > 0;
+        const shortName = isScopedName ? name.substr((lastIndexOfScopeDelimiter as number) + 1) : name;
+        const detailedSignature = `${shortName} ${this._computeSignatureOfMembers(isDetailed)}`;
+        return detailedSignature;
     }
 }
diff --git a/packages/utils/src/abi_encoder/evm_data_types/uint.ts b/packages/utils/src/abi_encoder/evm_data_types/uint.ts
index 5180f0cf3..8e382e8dc 100644
--- a/packages/utils/src/abi_encoder/evm_data_types/uint.ts
+++ b/packages/utils/src/abi_encoder/evm_data_types/uint.ts
@@ -46,13 +46,17 @@ export class UIntDataType extends AbstractBlobDataType {
         return encodedValue;
     }
 
-    public decodeValue(calldata: RawCalldata): BigNumber {
+    public decodeValue(calldata: RawCalldata): BigNumber | number {
         const valueBuf = calldata.popWord();
         const value = EncoderMath.safeDecodeNumericValue(valueBuf, UIntDataType._MIN_VALUE, this._maxValue);
+        const numberOfBytesInUint8 = 8;
+        if (this._width === numberOfBytesInUint8) {
+            return value.toNumber();
+        }
         return value;
     }
 
-    public getSignature(): string {
+    public getSignatureType(): string {
         return `${SolidityTypes.Uint}${this._width}`;
     }
 }
diff --git a/packages/utils/src/abi_encoder/index.ts b/packages/utils/src/abi_encoder/index.ts
index baf844ac6..cfacfe075 100644
--- a/packages/utils/src/abi_encoder/index.ts
+++ b/packages/utils/src/abi_encoder/index.ts
@@ -11,4 +11,6 @@ export {
     String,
     Tuple,
     UInt,
+    create,
 } from './evm_data_type_factory';
+export { DataType } from './abstract_data_types/data_type';
diff --git a/packages/utils/src/abi_encoder/utils/constants.ts b/packages/utils/src/abi_encoder/utils/constants.ts
index 36de2dd4f..fc586f295 100644
--- a/packages/utils/src/abi_encoder/utils/constants.ts
+++ b/packages/utils/src/abi_encoder/utils/constants.ts
@@ -11,7 +11,7 @@ export const constants = {
     HEX_SELECTOR_BYTE_OFFSET_IN_CALLDATA: 0,
     // Disable no-object-literal-type-assertion so we can enforce cast
     /* tslint:disable no-object-literal-type-assertion */
-    DEFAULT_DECODING_RULES: { shouldConvertStructsToObjects: false } as DecodingRules,
+    DEFAULT_DECODING_RULES: { shouldConvertStructsToObjects: true } as DecodingRules,
     DEFAULT_ENCODING_RULES: { shouldOptimize: true, shouldAnnotate: false } as EncodingRules,
     /* tslint:enable no-object-literal-type-assertion */
 };
diff --git a/packages/utils/src/abi_encoder/utils/signature_parser.ts b/packages/utils/src/abi_encoder/utils/signature_parser.ts
new file mode 100644
index 000000000..315784cea
--- /dev/null
+++ b/packages/utils/src/abi_encoder/utils/signature_parser.ts
@@ -0,0 +1,101 @@
+import { DataItem } from 'ethereum-types';
+import * as _ from 'lodash';
+
+/**
+ * Returns an array of DataItem's corresponding to the input signature.
+ * A signature can be in two forms: '<DataItem.type>' or '(<DataItem1.type>, <DataItem2.type>, ...)
+ * An example of the first form would be 'address' or 'uint256'
+ * An example of the second form would be '(address, uint256)'
+ * Signatures can also include a name field, for example: 'foo address' or '(foo address, bar uint256)'
+ * @param signature of input DataItems
+ * @return DataItems derived from input signature
+ */
+export function generateDataItemsFromSignature(signature: string): DataItem[] {
+    let trimmedSignature = signature;
+    if (signature.startsWith('(')) {
+        if (!signature.endsWith(')')) {
+            throw new Error(`Failed to generate data item. Must end with ')'`);
+        }
+        trimmedSignature = signature.substr(1, signature.length - 2);
+    }
+    trimmedSignature += ',';
+    let isCurrTokenArray = false;
+    let currTokenArrayModifier = '';
+    let isParsingArrayModifier = false;
+    let currToken = '';
+    let parenCount = 0;
+    let currTokenName = '';
+    const dataItems: DataItem[] = [];
+    for (const char of trimmedSignature) {
+        // Tokenize the type string while keeping track of parentheses.
+        switch (char) {
+            case '(':
+                parenCount += 1;
+                currToken += char;
+                break;
+            case ')':
+                parenCount -= 1;
+                currToken += char;
+                break;
+            case '[':
+                if (parenCount === 0) {
+                    isParsingArrayModifier = true;
+                    isCurrTokenArray = true;
+                    currTokenArrayModifier += '[';
+                } else {
+                    currToken += char;
+                }
+                break;
+            case ']':
+                if (parenCount === 0) {
+                    isParsingArrayModifier = false;
+                    currTokenArrayModifier += ']';
+                } else {
+                    currToken += char;
+                }
+                break;
+            case ' ':
+                if (parenCount === 0) {
+                    currTokenName = currToken;
+                    currToken = '';
+                } else {
+                    currToken += char;
+                }
+                break;
+            case ',':
+                if (parenCount === 0) {
+                    // Generate new DataItem from token
+                    const components = currToken.startsWith('(') ? generateDataItemsFromSignature(currToken) : [];
+                    const isTuple = !_.isEmpty(components);
+                    const dataItem: DataItem = { name: currTokenName, type: '' };
+                    if (isTuple) {
+                        dataItem.type = 'tuple';
+                        dataItem.components = components;
+                    } else {
+                        dataItem.type = currToken;
+                    }
+                    if (isCurrTokenArray) {
+                        dataItem.type += currTokenArrayModifier;
+                    }
+                    dataItems.push(dataItem);
+                    // reset token state
+                    currTokenName = '';
+                    currToken = '';
+                    isCurrTokenArray = false;
+                    currTokenArrayModifier = '';
+                    break;
+                } else {
+                    currToken += char;
+                    break;
+                }
+            default:
+                if (isParsingArrayModifier) {
+                    currTokenArrayModifier += char;
+                } else {
+                    currToken += char;
+                }
+                break;
+        }
+    }
+    return dataItems;
+}
diff --git a/packages/utils/test/abi_encoder/evm_data_types_test.ts b/packages/utils/test/abi_encoder/evm_data_types_test.ts
index 55d582d10..54d536a7e 100644
--- a/packages/utils/test/abi_encoder/evm_data_types_test.ts
+++ b/packages/utils/test/abi_encoder/evm_data_types_test.ts
@@ -26,6 +26,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Dynamic size; Static elements', async () => {
             // Create DataType object
@@ -41,6 +45,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Fixed size; Dynamic elements', async () => {
             // Create DataType object
@@ -56,6 +64,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Dynamic size; Dynamic elements', async () => {
             // Create DataType object
@@ -71,6 +83,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Dynamic Size; Multidimensional; Dynamic Elements', async () => {
             // Create DataType object
@@ -89,6 +105,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Dynamic Size; Multidimensional; Static Elements', async () => {
             // Create DataType object
@@ -107,6 +127,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Static Size; Multidimensional; Static Elements', async () => {
             // Create DataType object
@@ -124,6 +148,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Static Size; Multidimensional; Dynamic Elements', async () => {
             // Create DataType object
@@ -141,6 +169,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Static size; Too Few Elements', async () => {
             // Create DataType object
@@ -197,6 +229,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const decodingRules: AbiEncoder.DecodingRules = { shouldConvertStructsToObjects: true };
             const decodedArgs = dataType.decode(encodedArgs, decodingRules);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args, encodingRules);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Dynamic elements only', async () => {
             // Create DataType object
@@ -217,6 +253,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const decodingRules: AbiEncoder.DecodingRules = { shouldConvertStructsToObjects: true };
             const decodedArgs = dataType.decode(encodedArgs, decodingRules);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Nested Static Array', async () => {
             // Create DataType object
@@ -237,6 +277,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const decodingRules: AbiEncoder.DecodingRules = { shouldConvertStructsToObjects: true };
             const decodedArgs = dataType.decode(encodedArgs, decodingRules);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Nested Dynamic Array', async () => {
             // Create DataType object
@@ -257,6 +301,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const decodingRules: AbiEncoder.DecodingRules = { shouldConvertStructsToObjects: true };
             const decodedArgs = dataType.decode(encodedArgs, decodingRules);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Nested Static Multidimensional Array', async () => {
             // Create DataType object
@@ -279,6 +327,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const decodingRules: AbiEncoder.DecodingRules = { shouldConvertStructsToObjects: true };
             const decodedArgs = dataType.decode(encodedArgs, decodingRules);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Nested Dynamic Multidimensional Array', async () => {
             // Create DataType object
@@ -301,6 +353,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const decodingRules: AbiEncoder.DecodingRules = { shouldConvertStructsToObjects: true };
             const decodedArgs = dataType.decode(encodedArgs, decodingRules);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Static and dynamic elements mixed', async () => {
             // Create DataType object
@@ -331,6 +387,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const decodingRules: AbiEncoder.DecodingRules = { shouldConvertStructsToObjects: true };
             const decodedArgs = dataType.decode(encodedArgs, decodingRules);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Missing Key', async () => {
             // Create DataType object
@@ -345,22 +405,7 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Encode Args and validate result
             expect(() => {
                 dataType.encode(args, encodingRules);
-            }).to.throw('Could not assign tuple to object: missing keys field_2');
-        });
-        it('Bad Key', async () => {
-            // Create DataType object
-            const testDataItem = {
-                name: 'Tuple',
-                type: 'tuple',
-                components: [{ name: 'field_1', type: 'int32' }, { name: 'field_2', type: 'bool' }],
-            };
-            const dataType = new AbiEncoder.Tuple(testDataItem);
-            // Construct args to be encoded
-            const args = { unknown_field: new BigNumber(-5) };
-            // Encode Args and validate result
-            expect(() => {
-                dataType.encode(args, encodingRules);
-            }).to.throw("Could not assign tuple to object: unrecognized key 'unknown_field' in object Tuple");
+            }).to.throw('Could not assign tuple to object: missing key \'field_2\' in object {"field_1":"-5"}');
         });
     });
 
@@ -378,6 +423,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Invalid Address - input is not valid hex', async () => {
             // Create DataType object
@@ -417,6 +466,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('False', async () => {
             // Create DataType object
@@ -431,6 +484,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
     });
 
@@ -455,6 +512,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Int256 - Negative Base Case', async () => {
             // Create DataType object
@@ -469,6 +530,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Int256 - Positive Value', async () => {
             // Create DataType object
@@ -483,6 +548,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Int256 - Negative Value', async () => {
             // Create DataType object
@@ -497,6 +566,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Int256 - Value too large', async () => {
             // Create DataType object
@@ -533,6 +606,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Int32 - Negative Base Case', async () => {
             // Create DataType object
@@ -547,6 +624,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Int32 - Positive Value', async () => {
             // Create DataType object
@@ -561,6 +642,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Int32 - Negative Value', async () => {
             // Create DataType object
@@ -575,6 +660,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Int32 - Value too large', async () => {
             // Create DataType object
@@ -621,6 +710,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('UInt256 - Positive Value', async () => {
             // Create DataType object
@@ -635,6 +728,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('UInt256 - Zero Value', async () => {
             // Create DataType object
@@ -649,6 +746,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('UInt256 - Value too large', async () => {
             // Create DataType object
@@ -685,6 +786,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('UInt32 - Positive Value', async () => {
             // Create DataType object
@@ -699,6 +804,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('UInt32 - Zero Value', async () => {
             // Create DataType object
@@ -713,6 +822,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('UInt32 - Value too large', async () => {
             // Create DataType object
@@ -752,6 +865,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Single Byte (bytes1)', async () => {
             // Create DataType object
@@ -766,6 +883,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('4 Bytes (bytes4)', async () => {
             // Create DataType object
@@ -780,6 +901,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('4 Bytes (bytes4); Encoder must pad input', async () => {
             // Create DataType object
@@ -796,6 +921,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const decodedArgs = dataType.decode(encodedArgs);
             const paddedArgs = '0x1a180000';
             expect(decodedArgs).to.be.deep.equal(paddedArgs);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('32 Bytes (bytes32)', async () => {
             // Create DataType object
@@ -810,6 +939,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('32 Bytes (bytes32); Encoder must pad input', async () => {
             // Create DataType object
@@ -826,6 +959,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             const decodedArgs = dataType.decode(encodedArgs);
             const paddedArgs = '0x1a18bf6100000000000000000000000000000000000000000000000000000000';
             expect(decodedArgs).to.be.deep.equal(paddedArgs);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Should throw when pass in too many bytes (bytes4)', async () => {
             // Create DataType object
@@ -893,6 +1030,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Spans multiple EVM words', async () => {
             // Create DataType object
@@ -910,6 +1051,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Input as Buffer', async () => {
             // Create DataType object
@@ -927,6 +1072,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Should throw when pass in bad hex (no 0x prefix)', async () => {
             // Create DataType object
@@ -968,6 +1117,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('Spans multiple EVM words', async () => {
             // Create DataType object
@@ -985,6 +1138,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
         it('String that begins with 0x prefix', async () => {
             // Create DataType object
@@ -1002,6 +1159,10 @@ describe('ABI Encoder: EVM Data Type Encoding/Decoding', () => {
             // Decode Encoded Args and validate result
             const decodedArgs = dataType.decode(encodedArgs);
             expect(decodedArgs).to.be.deep.equal(args);
+            // Validate signature
+            const dataTypeFromSignature = AbiEncoder.create(dataType.getSignature(true));
+            const argsEncodedFromSignature = dataTypeFromSignature.encode(args);
+            expect(argsEncodedFromSignature).to.be.deep.equal(expectedEncodedArgs);
         });
     });
 });
diff --git a/packages/utils/test/abi_encoder/methods_test.ts b/packages/utils/test/abi_encoder/methods_test.ts
index a0525967e..d8045fece 100644
--- a/packages/utils/test/abi_encoder/methods_test.ts
+++ b/packages/utils/test/abi_encoder/methods_test.ts
@@ -21,7 +21,8 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0x09f2b0c30000000000000000000000000000000000000000000000000000000000000001ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff560000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000140000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00000000000000000000000000000000000000000000000000000000000000015600000000000000000000000000000000000000000000000000000000000000';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Array of Static Tuples (Array has defined length)', async () => {
@@ -40,7 +41,8 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0x9eb20969000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000050000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000700000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000009000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000b000000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000000d000000000000000000000000000000000000000000000000000000000000000e000000000000000000000000000000000000000000000000000000000000000f0000000000000000000000000000000000000000000000000000000000000010';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Array of Static Tuples (Array has dynamic length)', async () => {
@@ -59,7 +61,8 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0x63275d6e00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000050000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000700000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000009000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000b000000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000000d000000000000000000000000000000000000000000000000000000000000000e000000000000000000000000000000000000000000000000000000000000000f0000000000000000000000000000000000000000000000000000000000000010';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Array of Dynamic Tuples (Array has defined length)', async () => {
@@ -78,7 +81,8 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0xdeedb00f00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000018000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000280000000000000000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000000000000000000003800000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000048000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000132000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000013400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000001360000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000070000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000138000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000009000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000023130000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000b000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000023132000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000023134000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000023136000000000000000000000000000000000000000000000000000000000000';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Array of Dynamic Tuples (Array has dynamic length)', async () => {
@@ -97,7 +101,8 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0x60c847fb000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000018000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000280000000000000000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000000000000000000003800000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000048000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000132000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000013400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000001360000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000070000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000138000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000009000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000023130000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000b000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000023132000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000023134000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000023136000000000000000000000000000000000000000000000000000000000000';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Multidimensional Arrays / Static Members', async () => {
@@ -108,19 +113,16 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
         const args = [];
         const argsLength = 8;
         for (let i = 0; i < argsLength; ++i) {
-            args.push([
-                [[new BigNumber(++value), new BigNumber(++value)], [new BigNumber(++value), new BigNumber(++value)]],
-                [[new BigNumber(++value), new BigNumber(++value)], [new BigNumber(++value), new BigNumber(++value)]],
-            ]);
+            args.push([[[++value, ++value], [++value, ++value]], [[++value, ++value], [++value, ++value]]]);
         }
         const calldata = method.encode(args, encodingRules);
         // Validate calldata
         const expectedCalldata =
             '0xc2f47d6f00000000000000000000000000000000000000000000000000000000000001e00000000000000000000000000000000000000000000000000000000000000480000000000000000000000000000000000000000000000000000000000000070000000000000000000000000000000000000000000000000000000000000009600000000000000000000000000000000000000000000000000000000000000b000000000000000000000000000000000000000000000000000000000000000d400000000000000000000000000000000000000000000000000000000000000e600000000000000000000000000000000000000000000000000000000000000039000000000000000000000000000000000000000000000000000000000000003a000000000000000000000000000000000000000000000000000000000000003b000000000000000000000000000000000000000000000000000000000000003c000000000000000000000000000000000000000000000000000000000000003d000000000000000000000000000000000000000000000000000000000000003e000000000000000000000000000000000000000000000000000000000000003f00000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000001600000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000050000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000070000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000001600000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000009000000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000b000000000000000000000000000000000000000000000000000000000000000c0000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000d000000000000000000000000000000000000000000000000000000000000000e0000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000f0000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000140000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000110000000000000000000000000000000000000000000000000000000000000012000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000130000000000000000000000000000000000000000000000000000000000000014000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000001500000000000000000000000000000000000000000000000000000000000000160000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000001700000000000000000000000000000000000000000000000000000000000000180000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000e000000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000019000000000000000000000000000000000000000000000000000000000000001a000000000000000000000000000000000000000000000000000000000000001b000000000000000000000000000000000000000000000000000000000000001c0000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000001d000000000000000000000000000000000000000000000000000000000000001e000000000000000000000000000000000000000000000000000000000000001f000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000140000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000210000000000000000000000000000000000000000000000000000000000000022000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000230000000000000000000000000000000000000000000000000000000000000024000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000025000000000000000000000000000000000000000000000000000000000000002600000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000027000000000000000000000000000000000000000000000000000000000000002800000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000029000000000000000000000000000000000000000000000000000000000000002a000000000000000000000000000000000000000000000000000000000000002b000000000000000000000000000000000000000000000000000000000000002c000000000000000000000000000000000000000000000000000000000000002d000000000000000000000000000000000000000000000000000000000000002e000000000000000000000000000000000000000000000000000000000000002f0000000000000000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000e00000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000003100000000000000000000000000000000000000000000000000000000000000320000000000000000000000000000000000000000000000000000000000000033000000000000000000000000000000000000000000000000000000000000003400000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000035000000000000000000000000000000000000000000000000000000000000003600000000000000000000000000000000000000000000000000000000000000370000000000000000000000000000000000000000000000000000000000000038';
         expect(calldata).to.be.equal(expectedCalldata);
-        expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Multidimensional Arrays / Dynamic Members', async () => {
@@ -148,7 +150,8 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0x81534ebd0000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000052000000000000000000000000000000000000000000000000000000000000009a00000000000000000000000000000000000000000000000000000000000000e00000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000260000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000131000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001320000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000013300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000134000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000001200000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000001350000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000013600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000137000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001380000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000260000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000139000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002313000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000023131000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000231320000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000001200000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000002313300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000023134000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000231350000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002313600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000024000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000231370000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002313800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000023139000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000232300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000012000000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000023231000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000232320000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000002323300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000023234000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000232350000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002323600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000232370000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002323800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000002323900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000023330000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000002333100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000023332000000000000000000000000000000000000000000000000000000000000';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Fixed Length Array / Dynamic Members', async () => {
@@ -161,7 +164,8 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0x243a6e6e0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e00000000000000000000000000000000000000000000000000000000000000005427261766500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000034e657700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005576f726c64000000000000000000000000000000000000000000000000000000';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Fixed Length Array / Dynamic Members', async () => {
@@ -174,7 +178,8 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0x243a6e6e0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e00000000000000000000000000000000000000000000000000000000000000005427261766500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000034e657700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005576f726c64000000000000000000000000000000000000000000000000000000';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Unfixed Length Array / Dynamic Members ABI', async () => {
@@ -187,33 +192,40 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0x13e751a900000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e00000000000000000000000000000000000000000000000000000000000000005427261766500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000034e657700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005576f726c64000000000000000000000000000000000000000000000000000000';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Unfixed Length Array / Static Members ABI', async () => {
         // Generate calldata
         const method = new AbiEncoder.Method(AbiSamples.dynamicArrayStaticMembersAbi);
-        const args = [[new BigNumber(127), new BigNumber(14), new BigNumber(54)]];
+        // tslint:disable custom-no-magic-numbers
+        const args = [[127, 14, 54]];
+        // tslint:enable custom-no-magic-numbers
         const calldata = method.encode(args, encodingRules);
         // Validate calldata
         const expectedCalldata =
             '0x4fc8a83300000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000007f000000000000000000000000000000000000000000000000000000000000000e0000000000000000000000000000000000000000000000000000000000000036';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Fixed Length Array / Static Members ABI', async () => {
         // Generate calldata
         const method = new AbiEncoder.Method(AbiSamples.staticArrayAbi);
-        const args = [[new BigNumber(127), new BigNumber(14), new BigNumber(54)]];
+        // tslint:disable custom-no-magic-numbers
+        const args = [[127, 14, 54]];
+        // tslint:enable custom-no-magic-numbers
         const calldata = method.encode(args, encodingRules);
         // Validate calldata
         const expectedCalldata =
             '0xf68ade72000000000000000000000000000000000000000000000000000000000000007f000000000000000000000000000000000000000000000000000000000000000e0000000000000000000000000000000000000000000000000000000000000036';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Array ABI', async () => {
@@ -226,7 +238,8 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0x13e751a900000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e000000000000000000000000000000000000000000000000000000000000000046669766500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000373697800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005736576656e000000000000000000000000000000000000000000000000000000';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Static Tuple', async () => {
@@ -240,7 +253,8 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0xa9125e150000000000000000000000000000000000000000000000000000000000000005000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000f0000000000000000000000000000000000000000000000000000000000000000';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Dynamic Tuple (Array input)', async () => {
@@ -254,7 +268,8 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0x5b998f3500000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000005000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000046669766500000000000000000000000000000000000000000000000000000000';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Dynamic Tuple (Object input)', async () => {
@@ -268,7 +283,8 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '0x5b998f3500000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000005000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000046669766500000000000000000000000000000000000000000000000000000000';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Large, Flat ABI', async () => {
@@ -291,13 +307,16 @@ describe('ABI Encoder: Method Encoding / Decoding', () => {
             '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';
         expect(calldata).to.be.equal(expectedCalldata);
         // Validate decoding
-        const decodedValue = method.decode(calldata);
+        const decodingRules = { shouldConvertStructsToObjects: false };
+        const decodedValue = method.decode(calldata, decodingRules);
         expect(decodedValue).to.be.deep.equal(args);
     });
     it('Large, Nested ABI', async () => {
         // Construct Calldata
         const method = new AbiEncoder.Method(AbiSamples.largeNestedAbi);
-        const someStaticArray = [new BigNumber(127), new BigNumber(14), new BigNumber(54)];
+        // tslint:disable custom-no-magic-numbers
+        const someStaticArray = [127, 14, 54];
+        // tslint:enable custom-no-magic-numbers
         const someStaticArrayWithDynamicMembers = [
             'the little piping piper piped a piping pipper papper',
             'the kid knows how to write poems, what can I say -- I guess theres a lot I could say to try to fill this line with a lot of text.',
diff --git a/packages/utils/test/abi_encoder/optimizer_test.ts b/packages/utils/test/abi_encoder/optimizer_test.ts
index ee0654ec3..c2881f14c 100644
--- a/packages/utils/test/abi_encoder/optimizer_test.ts
+++ b/packages/utils/test/abi_encoder/optimizer_test.ts
@@ -23,7 +23,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0x7221063300000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000640000000000000000000000000000000000000000000000000000000000000096';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Dynamic Arrays with Dynamic Elements', async () => {
@@ -38,7 +38,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0xbb4f12e300000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000548656c6c6f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005576f726c64000000000000000000000000000000000000000000000000000000';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Static Arrays with Static Elements (should not optimize)', async () => {
@@ -55,7 +55,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
         const unoptimizedCalldata = method.encode(args);
         expect(optimizedCalldata).to.be.equal(unoptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Static Arrays with Dynamic Elements', async () => {
@@ -70,7 +70,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0x9fe31f8e0000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000548656c6c6f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005576f726c64000000000000000000000000000000000000000000000000000000';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Array Elements (should optimize)', async () => {
@@ -84,7 +84,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0x13e751a900000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000c0000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000c0000000000000000000000000000000000000000000000000000000000000000548656c6c6f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005576f726c64000000000000000000000000000000000000000000000000000000';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Tuple Fields', async () => {
@@ -98,7 +98,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0x16780a5e000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Strings', async () => {
@@ -115,7 +115,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0x07370bfa00000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Bytes', async () => {
@@ -133,7 +133,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0x6045e42900000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000002801020304050607080910111213141516171819202122232425262728293031323334353637383940000000000000000000000000000000000000000000000000';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Tuples', async () => {
@@ -148,7 +148,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0x564f826d000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000006792a000000000000000000000000000000000000000000000000000000000000000d48656c6c6f2c20576f726c642100000000000000000000000000000000000000';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Fields Across Two Tuples', async () => {
@@ -164,7 +164,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0x564f826d000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000d48656c6c6f2c20576f726c642100000000000000000000000000000000000000';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Arrays, Nested in Separate Tuples', async () => {
@@ -180,7 +180,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0x18970a9e000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000000000000000000064000000000000000000000000000000000000000000000000000000000000009600000000000000000000000000000000000000000000000000000000000000c80000000000000000000000000000000000000000000000000000000000000035657874726120617267756d656e7420746f2070726576656e742065786163746c79206d61746368696e6720746865207475706c65730000000000000000000000';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Tuples, Nested in Separate Tuples', async () => {
@@ -196,7 +196,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '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';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Two-Dimensional Arrays', async () => {
@@ -211,7 +211,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0x0d28c4f9000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000002c0000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000548656c6c6f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005576f726c640000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e00000000000000000000000000000000000000000000000000000000000000003466f6f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003426172000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000035a61610000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000548656c6c6f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005576f726c640000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e00000000000000000000000000000000000000000000000000000000000000003466f6f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003426172000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000035a61610000000000000000000000000000000000000000000000000000000000';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Duplicate Array, Nested within Separate Two-Dimensional Arrays', async () => {
@@ -226,14 +226,21 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0x0d28c4f900000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000001200000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000003466f6f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000548656c6c6f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005576f726c640000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000034261720000000000000000000000000000000000000000000000000000000000';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Array Elements Duplicated as Tuple Fields', async () => {
         // Generate calldata
         const method = new AbiEncoder.Method(OptimizedAbis.arrayElementsDuplicatedAsTupleFields);
-        const array = [new BigNumber(100), new BigNumber(150), new BigNumber(200), new BigNumber(225)];
-        const tuple = [[array[0]], [array[1]], [array[2]], [array[3]]];
+        // tslint:disable custom-no-magic-numbers
+        const array = [100, 150, 200, 225];
+        // tslint:enable custom-no-magic-numbers
+        const tuple = [
+            [new BigNumber(array[0])],
+            [new BigNumber(array[1])],
+            [new BigNumber(array[2])],
+            [new BigNumber(array[3])],
+        ];
         const args = [array, tuple];
         // Validata calldata
         const optimizedCalldata = method.encode(args, encodingRules);
@@ -241,7 +248,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0x5b5c78fd0000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000064000000000000000000000000000000000000000000000000000000000000009600000000000000000000000000000000000000000000000000000000000000c800000000000000000000000000000000000000000000000000000000000000e1';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
     it('Array Elements Duplicated as Separate Parameter', async () => {
@@ -256,7 +263,7 @@ describe('ABI Encoder: Optimized Method Encoding/Decoding', () => {
             '0xe0e0d34900000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000120000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000005576f726c64000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000548656c6c6f000000000000000000000000000000000000000000000000000000';
         expect(optimizedCalldata).to.be.equal(expectedOptimizedCalldata);
         // Validate decoding
-        const decodedArgs = method.decode(optimizedCalldata);
+        const decodedArgs = method.decode(optimizedCalldata, { shouldConvertStructsToObjects: false });
         expect(decodedArgs).to.be.deep.equal(args);
     });
 });
diff --git a/packages/utils/test/abi_encoder/return_values_test.ts b/packages/utils/test/abi_encoder/return_values_test.ts
index 104c7f5db..308d11ee5 100644
--- a/packages/utils/test/abi_encoder/return_values_test.ts
+++ b/packages/utils/test/abi_encoder/return_values_test.ts
@@ -15,7 +15,7 @@ describe('ABI Encoder: Return Value Encoding/Decoding', () => {
         // Decode return value
         const method = new AbiEncoder.Method(ReturnValueAbis.noReturnValues);
         const returnValue = '0x';
-        const decodedReturnValue = method.decodeReturnValues(returnValue);
+        const decodedReturnValue = method.decodeReturnValues(returnValue, { shouldConvertStructsToObjects: false });
         const expectedDecodedReturnValue: any[] = [];
         expect(decodedReturnValue).to.be.deep.equal(expectedDecodedReturnValue);
     });
@@ -24,7 +24,9 @@ describe('ABI Encoder: Return Value Encoding/Decoding', () => {
         const method = new AbiEncoder.Method(ReturnValueAbis.singleStaticReturnValue);
         const returnValue = ['0x01020304'];
         const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue);
+        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+            shouldConvertStructsToObjects: false,
+        });
         // Validate decoded return value
         expect(decodedReturnValue).to.be.deep.equal(returnValue);
     });
@@ -33,7 +35,9 @@ describe('ABI Encoder: Return Value Encoding/Decoding', () => {
         const method = new AbiEncoder.Method(ReturnValueAbis.multipleStaticReturnValues);
         const returnValue = ['0x01020304', '0x05060708'];
         const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue);
+        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+            shouldConvertStructsToObjects: false,
+        });
         // Validate decoded return value
         expect(decodedReturnValue).to.be.deep.equal(returnValue);
     });
@@ -42,7 +46,9 @@ describe('ABI Encoder: Return Value Encoding/Decoding', () => {
         const method = new AbiEncoder.Method(ReturnValueAbis.singleDynamicReturnValue);
         const returnValue = ['0x01020304'];
         const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue);
+        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+            shouldConvertStructsToObjects: false,
+        });
         // Validate decoded return value
         expect(decodedReturnValue).to.be.deep.equal(returnValue);
     });
@@ -51,7 +57,9 @@ describe('ABI Encoder: Return Value Encoding/Decoding', () => {
         const method = new AbiEncoder.Method(ReturnValueAbis.multipleDynamicReturnValues);
         const returnValue = ['0x01020304', '0x05060708'];
         const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue);
+        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+            shouldConvertStructsToObjects: false,
+        });
         // Validate decoded return value
         expect(decodedReturnValue).to.be.deep.equal(returnValue);
     });
@@ -60,7 +68,9 @@ describe('ABI Encoder: Return Value Encoding/Decoding', () => {
         const method = new AbiEncoder.Method(ReturnValueAbis.mixedStaticAndDynamicReturnValues);
         const returnValue = ['0x01020304', '0x05060708'];
         const encodedReturnValue = method.encodeReturnValues(returnValue, encodingRules);
-        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue);
+        const decodedReturnValue = method.decodeReturnValues(encodedReturnValue, {
+            shouldConvertStructsToObjects: false,
+        });
         // Validate decoded return value
         expect(decodedReturnValue).to.be.deep.equal(returnValue);
     });
diff --git a/packages/utils/test/abi_encoder/signature_tests.ts b/packages/utils/test/abi_encoder/signature_tests.ts
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/packages/utils/test/abi_encoder/signature_tests.ts
diff --git a/packages/web3-wrapper/CHANGELOG.json b/packages/web3-wrapper/CHANGELOG.json
index 648544761..b9d5a37b1 100644
--- a/packages/web3-wrapper/CHANGELOG.json
+++ b/packages/web3-wrapper/CHANGELOG.json
@@ -1,5 +1,23 @@
 [
     {
+        "timestamp": 1547561734,
+        "version": "3.2.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "3.2.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
         "timestamp": 1547040760,
         "version": "3.2.2",
         "changes": [
diff --git a/packages/web3-wrapper/CHANGELOG.md b/packages/web3-wrapper/CHANGELOG.md
index 4242fe0cc..5850c5474 100644
--- a/packages/web3-wrapper/CHANGELOG.md
+++ b/packages/web3-wrapper/CHANGELOG.md
@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.2.4 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v3.2.3 - _January 11, 2019_
+
+    * Dependencies updated
+
 ## v3.2.2 - _January 9, 2019_
 
     * Dependencies updated
diff --git a/packages/web3-wrapper/package.json b/packages/web3-wrapper/package.json
index b67472a8a..ce9c41ae7 100644
--- a/packages/web3-wrapper/package.json
+++ b/packages/web3-wrapper/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/web3-wrapper",
-    "version": "3.2.2",
+    "version": "3.2.4",
     "engines": {
         "node": ">=6.12"
     },
@@ -36,7 +36,7 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/web3-wrapper/README.md",
     "devDependencies": {
-        "@0x/tslint-config": "^2.0.0",
+        "@0x/tslint-config": "^2.0.2",
         "@types/ganache-core": "^2.1.0",
         "@types/lodash": "4.14.104",
         "chai": "^4.0.1",
@@ -54,11 +54,11 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/assert": "^1.0.21",
-        "@0x/json-schemas": "^2.1.5",
-        "@0x/typescript-typings": "^3.0.6",
-        "@0x/utils": "^2.1.1",
-        "ethereum-types": "^1.1.4",
+        "@0x/assert": "^1.0.23",
+        "@0x/json-schemas": "^2.1.7",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "ethers": "~4.0.4",
         "lodash": "^4.17.5"
diff --git a/packages/website/package.json b/packages/website/package.json
index af43fabf9..0d2773a2c 100644
--- a/packages/website/package.json
+++ b/packages/website/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@0x/website",
-    "version": "0.0.64",
+    "version": "0.0.66",
     "engines": {
         "node": ">=6.12"
     },
@@ -20,18 +20,18 @@
     "author": "Fabio Berger",
     "license": "Apache-2.0",
     "dependencies": {
-        "@0x/asset-buyer": "^3.0.5",
-        "@0x/contract-addresses": "^2.1.0",
-        "@0x/contract-wrappers": "^4.2.0",
-        "@0x/json-schemas": "^2.1.5",
-        "@0x/order-utils": "^3.1.0",
-        "@0x/react-docs": "^1.0.23",
-        "@0x/react-shared": "^1.1.0",
-        "@0x/subproviders": "^2.1.9",
-        "@0x/types": "^1.5.0",
-        "@0x/typescript-typings": "^3.0.4",
-        "@0x/utils": "^2.1.1",
-        "@0x/web3-wrapper": "^3.2.2",
+        "@0x/asset-buyer": "^4.0.1",
+        "@0x/contract-addresses": "^2.2.0",
+        "@0x/contract-wrappers": "^5.0.0",
+        "@0x/json-schemas": "^2.1.7",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/react-docs": "^1.0.25",
+        "@0x/react-shared": "^1.1.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
         "@reach/dialog": "^0.1.2",
         "@types/react-lazyload": "^2.3.1",
         "@types/react-loadable": "^5.4.2",
@@ -42,7 +42,7 @@
         "blockies": "^0.0.2",
         "bowser": "^1.9.3",
         "deep-equal": "^1.0.1",
-        "ethereum-types": "^1.1.4",
+        "ethereum-types": "^1.1.6",
         "ethereumjs-util": "^5.1.1",
         "find-versions": "^2.0.0",
         "jsonschema": "^1.2.0",
@@ -54,18 +54,20 @@
         "polished": "^1.9.2",
         "query-string": "^6.0.0",
         "rc-slider": "^8.6.3",
-        "react": "^16.4.2",
+        "react": "^16.5.2",
         "react-copy-to-clipboard": "^5.0.0",
         "react-document-title": "^2.0.3",
-        "react-dom": "^16.4.2",
+        "react-dom": "^16.5.2",
         "react-flickity-component": "^3.1.0",
         "react-headroom": "2.2.2",
         "react-helmet": "^5.2.0",
         "react-lazyload": "^2.3.0",
         "react-loadable": "^5.5.0",
+        "react-markdown": "^4.0.6",
         "react-popper": "^1.0.0-beta.6",
         "react-redux": "^5.0.3",
         "react-responsive": "^6.0.1",
+        "react-router-dom": "^4.3.1",
         "react-scroll": "0xproject/react-scroll#pr-330-and-replace-state",
         "react-scrollable-anchor": "^0.6.1",
         "react-syntax-highlighter": "^10.1.1",
diff --git a/packages/website/public/css/basscss.min.css b/packages/website/public/css/basscss.min.css
new file mode 100644
index 000000000..cb6f13198
--- /dev/null
+++ b/packages/website/public/css/basscss.min.css
@@ -0,0 +1 @@
+/*! Basscss | http://basscss.com | MIT License */.h1{font-size:2rem}.h2{font-size:1.5rem}.h3{font-size:1.25rem}.h4{font-size:1rem}.h5{font-size:.875rem}.h6{font-size:.75rem}.font-family-inherit{font-family:inherit}.font-size-inherit{font-size:inherit}.text-decoration-none{text-decoration:none}.bold{font-weight:700}.regular{font-weight:400}.italic{font-style:italic}.caps{text-transform:uppercase;letter-spacing:.2em}.left-align{text-align:left}.center{text-align:center}.right-align{text-align:right}.justify{text-align:justify}.nowrap{white-space:nowrap}.break-word{word-wrap:break-word}.line-height-1{line-height:1}.line-height-2{line-height:1.125}.line-height-3{line-height:1.25}.line-height-4{line-height:1.5}.list-style-none{list-style:none}.underline{text-decoration:underline}.truncate{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.list-reset{list-style:none;padding-left:0}.inline{display:inline}.block{display:block}.inline-block{display:inline-block}.table{display:table}.table-cell{display:table-cell}.overflow-hidden{overflow:hidden}.overflow-scroll{overflow:scroll}.overflow-auto{overflow:auto}.clearfix:after,.clearfix:before{content:" ";display:table}.clearfix:after{clear:both}.left{float:left}.right{float:right}.fit{max-width:100%}.max-width-1{max-width:24rem}.max-width-2{max-width:32rem}.max-width-3{max-width:48rem}.max-width-4{max-width:64rem}.border-box{box-sizing:border-box}.align-baseline{vertical-align:baseline}.align-top{vertical-align:top}.align-middle{vertical-align:middle}.align-bottom{vertical-align:bottom}.m0{margin:0}.mt0{margin-top:0}.mr0{margin-right:0}.mb0{margin-bottom:0}.ml0,.mx0{margin-left:0}.mx0{margin-right:0}.my0{margin-top:0;margin-bottom:0}.m1{margin:.5rem}.mt1{margin-top:.5rem}.mr1{margin-right:.5rem}.mb1{margin-bottom:.5rem}.ml1,.mx1{margin-left:.5rem}.mx1{margin-right:.5rem}.my1{margin-top:.5rem;margin-bottom:.5rem}.m2{margin:1rem}.mt2{margin-top:1rem}.mr2{margin-right:1rem}.mb2{margin-bottom:1rem}.ml2,.mx2{margin-left:1rem}.mx2{margin-right:1rem}.my2{margin-top:1rem;margin-bottom:1rem}.m3{margin:2rem}.mt3{margin-top:2rem}.mr3{margin-right:2rem}.mb3{margin-bottom:2rem}.ml3,.mx3{margin-left:2rem}.mx3{margin-right:2rem}.my3{margin-top:2rem;margin-bottom:2rem}.m4{margin:4rem}.mt4{margin-top:4rem}.mr4{margin-right:4rem}.mb4{margin-bottom:4rem}.ml4,.mx4{margin-left:4rem}.mx4{margin-right:4rem}.my4{margin-top:4rem;margin-bottom:4rem}.mxn1{margin-left:-.5rem;margin-right:-.5rem}.mxn2{margin-left:-1rem;margin-right:-1rem}.mxn3{margin-left:-2rem;margin-right:-2rem}.mxn4{margin-left:-4rem;margin-right:-4rem}.ml-auto{margin-left:auto}.mr-auto,.mx-auto{margin-right:auto}.mx-auto{margin-left:auto}.p0{padding:0}.pt0{padding-top:0}.pr0{padding-right:0}.pb0{padding-bottom:0}.pl0,.px0{padding-left:0}.px0{padding-right:0}.py0{padding-top:0;padding-bottom:0}.p1{padding:.5rem}.pt1{padding-top:.5rem}.pr1{padding-right:.5rem}.pb1{padding-bottom:.5rem}.pl1{padding-left:.5rem}.py1{padding-top:.5rem;padding-bottom:.5rem}.px1{padding-left:.5rem;padding-right:.5rem}.p2{padding:1rem}.pt2{padding-top:1rem}.pr2{padding-right:1rem}.pb2{padding-bottom:1rem}.pl2{padding-left:1rem}.py2{padding-top:1rem;padding-bottom:1rem}.px2{padding-left:1rem;padding-right:1rem}.p3{padding:2rem}.pt3{padding-top:2rem}.pr3{padding-right:2rem}.pb3{padding-bottom:2rem}.pl3{padding-left:2rem}.py3{padding-top:2rem;padding-bottom:2rem}.px3{padding-left:2rem;padding-right:2rem}.p4{padding:4rem}.pt4{padding-top:4rem}.pr4{padding-right:4rem}.pb4{padding-bottom:4rem}.pl4{padding-left:4rem}.py4{padding-top:4rem;padding-bottom:4rem}.px4{padding-left:4rem;padding-right:4rem}.col{float:left}.col,.col-right{box-sizing:border-box}.col-right{float:right}.col-1{width:8.33333%}.col-2{width:16.66667%}.col-3{width:25%}.col-4{width:33.33333%}.col-5{width:41.66667%}.col-6{width:50%}.col-7{width:58.33333%}.col-8{width:66.66667%}.col-9{width:75%}.col-10{width:83.33333%}.col-11{width:91.66667%}.col-12{width:100%}@media 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(min-width:64em){.lg-col{float:left;box-sizing:border-box}.lg-col-right{float:right;box-sizing:border-box}.lg-col-1{width:8.33333%}.lg-col-2{width:16.66667%}.lg-col-3{width:25%}.lg-col-4{width:33.33333%}.lg-col-5{width:41.66667%}.lg-col-6{width:50%}.lg-col-7{width:58.33333%}.lg-col-8{width:66.66667%}.lg-col-9{width:75%}.lg-col-10{width:83.33333%}.lg-col-11{width:91.66667%}.lg-col-12{width:100%}}.flex{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex}@media (min-width:40em){.sm-flex{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex}}@media (min-width:52em){.md-flex{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex}}@media 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\ No newline at end of file
diff --git a/packages/website/public/index.html b/packages/website/public/index.html
index 26ebcdec8..738b675e7 100644
--- a/packages/website/public/index.html
+++ b/packages/website/public/index.html
@@ -18,6 +18,7 @@
         <link rel="stylesheet" href="/css/roboto.css" />
         <link rel="stylesheet" href="/css/roboto_mono.css" />
         <link rel="stylesheet" href="/css/formular.css" />
+        <link rel="stylesheet" href="/css/basscss.min.css" />
         <link rel="stylesheet" href="/css/basscss_responsive_custom.css" />
         <link rel="stylesheet" href="/css/basscss_responsive_padding.css" />
         <link rel="stylesheet" href="/css/basscss_responsive_margin.css" />
diff --git a/packages/website/ts/components/dialogs/ledger_config_dialog.tsx b/packages/website/ts/components/dialogs/ledger_config_dialog.tsx
index e15a2dd94..527353aa0 100644
--- a/packages/website/ts/components/dialogs/ledger_config_dialog.tsx
+++ b/packages/website/ts/components/dialogs/ledger_config_dialog.tsx
@@ -20,8 +20,8 @@ import { utils } from 'ts/utils/utils';
 const VALID_ETHEREUM_DERIVATION_PATH_PREFIX = `44'/60'`;
 
 enum LedgerSteps {
-    CONNECT,
-    SELECT_ADDRESS,
+    Connect,
+    SelectAddress,
 }
 
 interface LedgerConfigDialogProps {
@@ -52,7 +52,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         const derivationPathIfExists = props.blockchain.getLedgerDerivationPathIfExists();
         this.state = {
             connectionErrMsg: '',
-            stepIndex: LedgerSteps.CONNECT,
+            stepIndex: LedgerSteps.Connect,
             userAddresses: [],
             addressBalances: [],
             derivationPath: _.isUndefined(derivationPathIfExists)
@@ -67,7 +67,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
             <FlatButton key="ledgerConnectCancel" label="Cancel" onClick={this._onClose.bind(this)} />,
         ];
         const dialogTitle =
-            this.state.stepIndex === LedgerSteps.CONNECT ? 'Connect to your Ledger' : 'Select desired address';
+            this.state.stepIndex === LedgerSteps.Connect ? 'Connect to your Ledger' : 'Select desired address';
         return (
             <Dialog
                 title={dialogTitle}
@@ -79,8 +79,8 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
                 bodyStyle={{ paddingBottom: 0 }}
             >
                 <div style={{ color: colors.grey700, paddingTop: 1 }}>
-                    {this.state.stepIndex === LedgerSteps.CONNECT && this._renderConnectStep()}
-                    {this.state.stepIndex === LedgerSteps.SELECT_ADDRESS && this._renderSelectAddressStep()}
+                    {this.state.stepIndex === LedgerSteps.Connect && this._renderConnectStep()}
+                    {this.state.stepIndex === LedgerSteps.SelectAddress && this._renderSelectAddressStep()}
                 </div>
             </Dialog>
         );
@@ -195,7 +195,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
     private _onClose(): void {
         this.setState({
             connectionErrMsg: '',
-            stepIndex: LedgerSteps.CONNECT,
+            stepIndex: LedgerSteps.Connect,
         });
         const isOpen = false;
         this.props.toggleDialogFn(isOpen);
@@ -210,7 +210,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         this.props.blockchain.fetchTokenInformationAsync();
         this.props.dispatcher.updateUserWeiBalance(selectAddressBalance);
         this.setState({
-            stepIndex: LedgerSteps.CONNECT,
+            stepIndex: LedgerSteps.Connect,
         });
         const isOpen = false;
         this.props.toggleDialogFn(isOpen);
@@ -284,7 +284,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         const didSucceed = await this._fetchAddressesAndBalancesAsync();
         if (didSucceed) {
             this.setState({
-                stepIndex: LedgerSteps.SELECT_ADDRESS,
+                stepIndex: LedgerSteps.SelectAddress,
                 connectionErrMsg: '',
             });
         }
diff --git a/packages/website/ts/components/fill_order.tsx b/packages/website/ts/components/fill_order.tsx
index 2fa2b94a0..7fee8c4df 100644
--- a/packages/website/ts/components/fill_order.tsx
+++ b/packages/website/ts/components/fill_order.tsx
@@ -182,7 +182,7 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
                     </div>
                 )}
                 {!_.isEmpty(this.state.orderJSONErrMsg) && (
-                    <Alert type={AlertTypes.ERROR} message={this.state.orderJSONErrMsg} />
+                    <Alert type={AlertTypes.Error} message={this.state.orderJSONErrMsg} />
                 )}
             </div>
         );
@@ -298,7 +298,7 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
                                 onClick={this._onCancelOrderClickFireAndForgetAsync.bind(this)}
                             />
                             {this.state.didCancelOrderSucceed && (
-                                <Alert type={AlertTypes.SUCCESS} message={this._renderCancelSuccessMsg()} />
+                                <Alert type={AlertTypes.Success} message={this._renderCancelSuccessMsg()} />
                             )}
                         </div>
                     ) : (
@@ -310,10 +310,10 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
                                 onClick={this._onFillOrderClick.bind(this)}
                             />
                             {!_.isEmpty(this.state.globalErrMsg) && (
-                                <Alert type={AlertTypes.ERROR} message={this.state.globalErrMsg} />
+                                <Alert type={AlertTypes.Error} message={this.state.globalErrMsg} />
                             )}
                             {this.state.didFillOrderSucceed && (
-                                <Alert type={AlertTypes.SUCCESS} message={this._renderFillSuccessMsg()} />
+                                <Alert type={AlertTypes.Success} message={this._renderFillSuccessMsg()} />
                             )}
                         </div>
                     )}
diff --git a/packages/website/ts/components/generate_order/asset_picker.tsx b/packages/website/ts/components/generate_order/asset_picker.tsx
index e6ecd2ec8..d3f11f962 100644
--- a/packages/website/ts/components/generate_order/asset_picker.tsx
+++ b/packages/website/ts/components/generate_order/asset_picker.tsx
@@ -18,9 +18,9 @@ import { utils } from 'ts/utils/utils';
 const TOKEN_ICON_DIMENSION = 100;
 const TILE_DIMENSION = 146;
 enum AssetViews {
-    ASSET_PICKER = 'ASSET_PICKER',
-    NEW_TOKEN_FORM = 'NEW_TOKEN_FORM',
-    CONFIRM_TRACK_TOKEN = 'CONFIRM_TRACK_TOKEN',
+    AssetPicker = 'ASSET_PICKER',
+    NewTokenForm = 'NEW_TOKEN_FORM',
+    ConfirmTrackToken = 'CONFIRM_TRACK_TOKEN',
 }
 
 interface AssetPickerProps {
@@ -44,29 +44,29 @@ interface AssetPickerState {
 
 export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerState> {
     public static defaultProps: Partial<AssetPickerProps> = {
-        tokenVisibility: TokenVisibility.ALL,
+        tokenVisibility: TokenVisibility.All,
     };
     private readonly _dialogConfigsByAssetView: { [assetView: string]: DialogConfigs };
     constructor(props: AssetPickerProps) {
         super(props);
         this.state = {
-            assetView: AssetViews.ASSET_PICKER,
+            assetView: AssetViews.AssetPicker,
             hoveredAddress: undefined,
             chosenTrackTokenAddress: undefined,
             isAddingTokenToTracked: false,
         };
         this._dialogConfigsByAssetView = {
-            [AssetViews.ASSET_PICKER]: {
+            [AssetViews.AssetPicker]: {
                 title: 'Select token',
                 isModal: false,
                 actions: [],
             },
-            [AssetViews.NEW_TOKEN_FORM]: {
+            [AssetViews.NewTokenForm]: {
                 title: 'Add an ERC20 token',
                 isModal: false,
                 actions: [],
             },
-            [AssetViews.CONFIRM_TRACK_TOKEN]: {
+            [AssetViews.ConfirmTrackToken]: {
                 title: 'Tracking confirmation',
                 isModal: true,
                 actions: [
@@ -95,15 +95,15 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
                 autoScrollBodyContent={true}
                 onRequestClose={this._onCloseDialog.bind(this)}
             >
-                {this.state.assetView === AssetViews.ASSET_PICKER && this._renderAssetPicker()}
-                {this.state.assetView === AssetViews.NEW_TOKEN_FORM && (
+                {this.state.assetView === AssetViews.AssetPicker && this._renderAssetPicker()}
+                {this.state.assetView === AssetViews.NewTokenForm && (
                     <NewTokenForm
                         blockchain={this.props.blockchain}
                         onNewTokenSubmitted={this._onNewTokenSubmitted.bind(this)}
                         tokenByAddress={this.props.tokenByAddress}
                     />
                 )}
-                {this.state.assetView === AssetViews.CONFIRM_TRACK_TOKEN && this._renderConfirmTrackToken()}
+                {this.state.assetView === AssetViews.ConfirmTrackToken && this._renderConfirmTrackToken()}
             </Dialog>
         );
     }
@@ -138,19 +138,19 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
         const allTokens = _.values(this.props.tokenByAddress);
         // filter tokens based on visibility specified in props, do not show ZRX or ETHER as tracked or untracked
         const filteredTokens =
-            this.props.tokenVisibility === TokenVisibility.ALL
+            this.props.tokenVisibility === TokenVisibility.All
                 ? allTokens
                 : _.filter(allTokens, token => {
                       return (
                           token.symbol !== constants.ZRX_TOKEN_SYMBOL &&
                           token.symbol !== constants.ETHER_TOKEN_SYMBOL &&
-                          ((this.props.tokenVisibility === TokenVisibility.TRACKED && utils.isTokenTracked(token)) ||
-                              (this.props.tokenVisibility === TokenVisibility.UNTRACKED &&
+                          ((this.props.tokenVisibility === TokenVisibility.Tracked && utils.isTokenTracked(token)) ||
+                              (this.props.tokenVisibility === TokenVisibility.Untracked &&
                                   !utils.isTokenTracked(token)))
                       );
                   });
         // if we are showing tracked tokens, sort by date added, otherwise sort by symbol
-        const sortKey = this.props.tokenVisibility === TokenVisibility.TRACKED ? 'trackedTimestamp' : 'symbol';
+        const sortKey = this.props.tokenVisibility === TokenVisibility.Tracked ? 'trackedTimestamp' : 'symbol';
         const sortedTokens = filteredTokens.sort(firstBy(sortKey));
         if (_.isEmpty(sortedTokens)) {
             return <div className="mx-auto p4 h2">No tokens to remove.</div>;
@@ -188,7 +188,7 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
             cursor: 'pointer',
             opacity: isHovered ? 0.6 : 1,
         };
-        if (this.props.tokenVisibility !== TokenVisibility.TRACKED) {
+        if (this.props.tokenVisibility !== TokenVisibility.Tracked) {
             gridTiles.push(
                 <div
                     key={otherTokenKey}
@@ -222,7 +222,7 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
     }
     private _onCloseDialog(): void {
         this.setState({
-            assetView: AssetViews.ASSET_PICKER,
+            assetView: AssetViews.AssetPicker,
         });
         this.props.onTokenChosen(this.props.currentTokenAddress);
     }
@@ -232,21 +232,21 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
             this.props.onTokenChosen(tokenAddress);
         } else {
             this.setState({
-                assetView: AssetViews.CONFIRM_TRACK_TOKEN,
+                assetView: AssetViews.ConfirmTrackToken,
                 chosenTrackTokenAddress: tokenAddress,
             });
         }
     }
     private _onCustomAssetChosen(): void {
         this.setState({
-            assetView: AssetViews.NEW_TOKEN_FORM,
+            assetView: AssetViews.NewTokenForm,
         });
     }
     private _onNewTokenSubmitted(newToken: Token): void {
         trackedTokenStorage.addTrackedTokenToUser(this.props.userAddress, this.props.networkId, newToken);
         this.props.dispatcher.addTokenToTokenByAddress(newToken);
         this.setState({
-            assetView: AssetViews.ASSET_PICKER,
+            assetView: AssetViews.AssetPicker,
         });
         this.props.onTokenChosen(newToken.address);
     }
@@ -254,7 +254,7 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
         const resetState: AssetPickerState = {
             ...this.state,
             isAddingTokenToTracked: false,
-            assetView: AssetViews.ASSET_PICKER,
+            assetView: AssetViews.AssetPicker,
             chosenTrackTokenAddress: undefined,
         };
         if (!didUserAcceptTracking) {
diff --git a/packages/website/ts/components/generate_order/generate_order_form.tsx b/packages/website/ts/components/generate_order/generate_order_form.tsx
index 8afbee977..0f70aa18f 100644
--- a/packages/website/ts/components/generate_order/generate_order_form.tsx
+++ b/packages/website/ts/components/generate_order/generate_order_form.tsx
@@ -36,9 +36,9 @@ import { errorReporter } from 'ts/utils/error_reporter';
 import { utils } from 'ts/utils/utils';
 
 enum SigningState {
-    UNSIGNED,
-    SIGNING,
-    SIGNED,
+    Unsigned,
+    Signing,
+    Signed,
 }
 
 interface GenerateOrderFormProps {
@@ -76,7 +76,7 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
         this.state = {
             globalErrMsg: '',
             shouldShowIncompleteErrs: false,
-            signingState: SigningState.UNSIGNED,
+            signingState: SigningState.Unsigned,
         };
     }
     public componentDidMount(): void {
@@ -207,7 +207,7 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
                             />
                         </div>
                         {this.state.globalErrMsg !== '' && (
-                            <Alert type={AlertTypes.ERROR} message={this.state.globalErrMsg} />
+                            <Alert type={AlertTypes.Error} message={this.state.globalErrMsg} />
                         )}
                     </div>
                 </div>
@@ -215,7 +215,7 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
                     title="Order JSON"
                     titleStyle={{ fontWeight: 100 }}
                     modal={false}
-                    open={this.state.signingState === SigningState.SIGNED}
+                    open={this.state.signingState === SigningState.Signed}
                     onRequestClose={this._onCloseOrderJSONDialog.bind(this)}
                 >
                     <OrderJSON
@@ -247,7 +247,7 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
         // orderHash will not collide with the previously generated orderHash.
         this.props.dispatcher.updateOrderSalt(generatePseudoRandomSalt());
         this.setState({
-            signingState: SigningState.UNSIGNED,
+            signingState: SigningState.Unsigned,
         });
     }
     private async _onSignClickedAsync(): Promise<boolean> {
@@ -305,13 +305,13 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
     }
     private async _signTransactionAsync(): Promise<PortalOrder | undefined> {
         this.setState({
-            signingState: SigningState.SIGNING,
+            signingState: SigningState.Signing,
         });
         const exchangeAddress = this.props.blockchain.getExchangeContractAddressIfExists();
         if (_.isUndefined(exchangeAddress)) {
             this.props.dispatcher.updateShouldBlockchainErrDialogBeOpen(true);
             this.setState({
-                signingState: SigningState.UNSIGNED,
+                signingState: SigningState.Unsigned,
             });
             return undefined;
         }
@@ -371,7 +371,7 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
             }
         }
         this.setState({
-            signingState: globalErrMsg === '' ? SigningState.SIGNED : SigningState.UNSIGNED,
+            signingState: globalErrMsg === '' ? SigningState.Signed : SigningState.Unsigned,
             globalErrMsg,
         });
         return order;
diff --git a/packages/website/ts/components/generate_order/new_token_form.tsx b/packages/website/ts/components/generate_order/new_token_form.tsx
index b8cd88b18..ce684d177 100644
--- a/packages/website/ts/components/generate_order/new_token_form.tsx
+++ b/packages/website/ts/components/generate_order/new_token_form.tsx
@@ -93,7 +93,7 @@ export class NewTokenForm extends React.Component<NewTokenFormProps, NewTokenFor
                         onClickAsyncFn={this._onAddNewTokenClickAsync.bind(this)}
                     />
                 </div>
-                {this.state.globalErrMsg !== '' && <Alert type={AlertTypes.ERROR} message={this.state.globalErrMsg} />}
+                {this.state.globalErrMsg !== '' && <Alert type={AlertTypes.Error} message={this.state.globalErrMsg} />}
             </div>
         );
     }
diff --git a/packages/website/ts/components/inputs/allowance_state_toggle.tsx b/packages/website/ts/components/inputs/allowance_state_toggle.tsx
index 5396295d2..3a78d32f3 100644
--- a/packages/website/ts/components/inputs/allowance_state_toggle.tsx
+++ b/packages/website/ts/components/inputs/allowance_state_toggle.tsx
@@ -150,7 +150,7 @@ export class AllowanceStateToggle extends React.Component<AllowanceStateTogglePr
             }
             logUtils.log(`Unexpected error encountered: ${err}`);
             logUtils.log(err.stack);
-            this.props.onErrorOccurred(BalanceErrs.allowanceSettingFailed);
+            this.props.onErrorOccurred(BalanceErrs.AllowanceSettingFailed);
             errorReporter.report(err);
         }
     }
diff --git a/packages/website/ts/components/portal/portal.tsx b/packages/website/ts/components/portal/portal.tsx
index 6d7c90573..59cf2db71 100644
--- a/packages/website/ts/components/portal/portal.tsx
+++ b/packages/website/ts/components/portal/portal.tsx
@@ -229,8 +229,8 @@ export class Portal extends React.Component<PortalProps, PortalState> {
         const isAssetPickerDialogOpen = this.state.tokenManagementState !== TokenManagementState.None;
         const tokenVisibility =
             this.state.tokenManagementState === TokenManagementState.Add
-                ? TokenVisibility.UNTRACKED
-                : TokenVisibility.TRACKED;
+                ? TokenVisibility.Untracked
+                : TokenVisibility.Tracked;
         return (
             <Container>
                 <MetaTags title={DOCUMENT_TITLE} description={DOCUMENT_DESCRIPTION} />
diff --git a/packages/website/ts/components/token_balances.tsx b/packages/website/ts/components/token_balances.tsx
index 2ed0229c8..e8f2a6461 100644
--- a/packages/website/ts/components/token_balances.tsx
+++ b/packages/website/ts/components/token_balances.tsx
@@ -303,7 +303,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
                     currentTokenAddress={''}
                     onTokenChosen={this._onAssetTokenPicked.bind(this)}
                     tokenByAddress={this.props.tokenByAddress}
-                    tokenVisibility={this.state.isAddingToken ? TokenVisibility.UNTRACKED : TokenVisibility.TRACKED}
+                    tokenVisibility={this.state.isAddingToken ? TokenVisibility.Untracked : TokenVisibility.Tracked}
                 />
             </div>
         );
@@ -439,7 +439,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
     }
     private _onSendFailed(): void {
         this.setState({
-            errorType: BalanceErrs.sendFailed,
+            errorType: BalanceErrs.SendFailed,
         });
     }
     private _renderAmount(amount: BigNumber, decimals: number): React.ReactNode {
@@ -460,7 +460,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
     }
     private _renderErrorDialogBody(): React.ReactNode {
         switch (this.state.errorType) {
-            case BalanceErrs.incorrectNetworkForFaucet:
+            case BalanceErrs.IncorrectNetworkForFaucet:
                 return (
                     <div>
                         Our faucet can only send test Ether to addresses on testnets. Please make sure you are connected
@@ -468,7 +468,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
                     </div>
                 );
 
-            case BalanceErrs.faucetRequestFailed:
+            case BalanceErrs.FaucetRequestFailed:
                 return (
                     <div>
                         An unexpected error occurred while trying to request test Ether from our faucet. Please refresh
@@ -476,13 +476,13 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
                     </div>
                 );
 
-            case BalanceErrs.faucetQueueIsFull:
+            case BalanceErrs.FaucetQueueIsFull:
                 return <div>Our test Ether faucet queue is full. Please try requesting test Ether again later.</div>;
 
-            case BalanceErrs.mintingFailed:
+            case BalanceErrs.MintingFailed:
                 return <div>Minting your test tokens failed unexpectedly. Please refresh the page and try again.</div>;
 
-            case BalanceErrs.allowanceSettingFailed:
+            case BalanceErrs.AllowanceSettingFailed:
                 return (
                     <div>
                         An unexpected error occurred while trying to set your test token allowance. Please refresh the
@@ -521,7 +521,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             logUtils.log(`Unexpected error encountered: ${err}`);
             logUtils.log(err.stack);
             this.setState({
-                errorType: BalanceErrs.mintingFailed,
+                errorType: BalanceErrs.MintingFailed,
             });
             errorReporter.report(err);
             return false;
@@ -537,7 +537,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
         // from, we must show user an error message
         if (!utils.isTestNetwork(this.props.blockchain.networkId)) {
             this.setState({
-                errorType: BalanceErrs.incorrectNetworkForFaucet,
+                errorType: BalanceErrs.IncorrectNetworkForFaucet,
             });
             return false;
         }
@@ -553,8 +553,8 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             logUtils.log(`Unexpected status code: ${response.status} -> ${responseBody}`);
             const errorType =
                 response.status === constants.UNAVAILABLE_STATUS
-                    ? BalanceErrs.faucetQueueIsFull
-                    : BalanceErrs.faucetRequestFailed;
+                    ? BalanceErrs.FaucetQueueIsFull
+                    : BalanceErrs.FaucetRequestFailed;
             this.setState({
                 errorType,
             });
diff --git a/packages/website/ts/components/ui/alert.tsx b/packages/website/ts/components/ui/alert.tsx
index 32e0f1be8..c7a5b9030 100644
--- a/packages/website/ts/components/ui/alert.tsx
+++ b/packages/website/ts/components/ui/alert.tsx
@@ -8,7 +8,7 @@ interface AlertProps {
 }
 
 export const Alert = (props: AlertProps) => {
-    const isAlert = props.type === AlertTypes.ERROR;
+    const isAlert = props.type === AlertTypes.Error;
     const errMsgStyles = {
         background: isAlert ? colors.red200 : colors.lightestGreen,
         color: colors.white,
diff --git a/packages/website/ts/components/ui/lifecycle_raised_button.tsx b/packages/website/ts/components/ui/lifecycle_raised_button.tsx
index a8daf4102..f004dd47f 100644
--- a/packages/website/ts/components/ui/lifecycle_raised_button.tsx
+++ b/packages/website/ts/components/ui/lifecycle_raised_button.tsx
@@ -6,9 +6,9 @@ import * as React from 'react';
 const COMPLETE_STATE_SHOW_LENGTH_MS = 2000;
 
 enum ButtonState {
-    READY,
-    LOADING,
-    COMPLETE,
+    Ready,
+    Loading,
+    Complete,
 }
 
 interface LifeCycleRaisedButtonProps {
@@ -38,7 +38,7 @@ export class LifeCycleRaisedButton extends React.Component<LifeCycleRaisedButton
     constructor(props: LifeCycleRaisedButtonProps) {
         super(props);
         this.state = {
-            buttonState: ButtonState.READY,
+            buttonState: ButtonState.Ready,
         };
     }
     public componentWillUnmount(): void {
@@ -52,13 +52,13 @@ export class LifeCycleRaisedButton extends React.Component<LifeCycleRaisedButton
 
         let label;
         switch (this.state.buttonState) {
-            case ButtonState.READY:
+            case ButtonState.Ready:
                 label = this.props.labelReady;
                 break;
-            case ButtonState.LOADING:
+            case ButtonState.Loading:
                 label = this.props.labelLoading;
                 break;
-            case ButtonState.COMPLETE:
+            case ButtonState.Complete:
                 label = this.props.labelComplete;
                 break;
             default:
@@ -72,13 +72,13 @@ export class LifeCycleRaisedButton extends React.Component<LifeCycleRaisedButton
                 backgroundColor={this.props.backgroundColor}
                 labelColor={this.props.labelColor}
                 onClick={this.onClickAsync.bind(this)}
-                disabled={this.props.isDisabled || this.state.buttonState !== ButtonState.READY}
+                disabled={this.props.isDisabled || this.state.buttonState !== ButtonState.Ready}
             />
         );
     }
     public async onClickAsync(): Promise<void> {
         this.setState({
-            buttonState: ButtonState.LOADING,
+            buttonState: ButtonState.Loading,
         });
         const didSucceed = await this.props.onClickAsyncFn();
         if (this._didUnmount) {
@@ -86,16 +86,16 @@ export class LifeCycleRaisedButton extends React.Component<LifeCycleRaisedButton
         }
         if (didSucceed) {
             this.setState({
-                buttonState: ButtonState.COMPLETE,
+                buttonState: ButtonState.Complete,
             });
             this._buttonTimeoutId = window.setTimeout(() => {
                 this.setState({
-                    buttonState: ButtonState.READY,
+                    buttonState: ButtonState.Ready,
                 });
             }, COMPLETE_STATE_SHOW_LENGTH_MS);
         } else {
             this.setState({
-                buttonState: ButtonState.READY,
+                buttonState: ButtonState.Ready,
             });
         }
     }
diff --git a/packages/website/ts/index.tsx b/packages/website/ts/index.tsx
index 4ed66c572..7bb018d17 100644
--- a/packages/website/ts/index.tsx
+++ b/packages/website/ts/index.tsx
@@ -31,7 +31,6 @@ import { NextWhy } from 'ts/pages/why';
 tradeHistoryStorage.clearIfRequired();
 trackedTokenStorage.clearIfRequired();
 
-import 'basscss/css/basscss.css';
 import 'less/all.less';
 
 // We pass modulePromise returning lambda instead of module promise,
diff --git a/packages/website/ts/types.ts b/packages/website/ts/types.ts
index 50114e2d6..9492da5a5 100644
--- a/packages/website/ts/types.ts
+++ b/packages/website/ts/types.ts
@@ -83,12 +83,12 @@ export interface Fill {
 }
 
 export enum BalanceErrs {
-    incorrectNetworkForFaucet,
-    faucetRequestFailed,
-    faucetQueueIsFull,
-    mintingFailed,
-    sendFailed,
-    allowanceSettingFailed,
+    IncorrectNetworkForFaucet,
+    FaucetRequestFailed,
+    FaucetQueueIsFull,
+    MintingFailed,
+    SendFailed,
+    AllowanceSettingFailed,
 }
 
 export enum ActionTypes {
@@ -209,8 +209,8 @@ export enum ScreenWidths {
 }
 
 export enum AlertTypes {
-    ERROR,
-    SUCCESS,
+    Error,
+    Success,
 }
 
 export enum BlockchainErrs {
@@ -228,11 +228,11 @@ export enum BlockchainCallErrs {
 }
 
 export enum Environments {
-    DEVELOPMENT = 'DEVELOPMENT',
-    DOGFOOD = 'DOGFOOD',
-    STAGING = 'STAGING',
-    PRODUCTION = 'PRODUCTION',
-    UNKNOWN = 'UNKNOWN',
+    Development = 'DEVELOPMENT',
+    Dogfood = 'DOGFOOD',
+    Staging = 'STAGING',
+    Production = 'PRODUCTION',
+    Unknown = 'UNKNOWN',
 }
 
 export type ContractInstance = any; // TODO: add type definition for Contract
@@ -323,9 +323,9 @@ export interface DialogConfigs {
 }
 
 export enum TokenVisibility {
-    ALL = 'ALL',
-    UNTRACKED = 'UNTRACKED',
-    TRACKED = 'TRACKED',
+    All = 'ALL',
+    Untracked = 'UNTRACKED',
+    Tracked = 'TRACKED',
 }
 
 export interface VersionToFilePath {
@@ -350,7 +350,7 @@ export enum WebsitePaths {
     Docs = '/docs',
     ZeroExJs = '/docs/0x.js',
     Home = '/',
-    FAQ = '/faq',
+    FAQ = '/faq', // tslint:disable-line:enum-naming
     About = '/about',
     AboutMission = '/about/mission',
     AboutTeam = '/about/team',
@@ -629,7 +629,7 @@ export enum BrowserType {
 
 export enum OperatingSystemType {
     Android = 'Android',
-    iOS = 'iOS',
+    iOS = 'iOS', // tslint:disable-line:enum-naming
     Mac = 'Mac',
     Windows = 'Windows',
     WindowsPhone = 'WindowsPhone',
diff --git a/packages/website/ts/utils/utils.ts b/packages/website/ts/utils/utils.ts
index 8cc0061de..890f1553a 100644
--- a/packages/website/ts/utils/utils.ts
+++ b/packages/website/ts/utils/utils.ts
@@ -342,18 +342,18 @@ export const utils = {
     },
     getEnvironment(): Environments {
         if (utils.isDogfood()) {
-            return Environments.DOGFOOD;
+            return Environments.Dogfood;
         }
         if (utils.isDevelopment()) {
-            return Environments.DEVELOPMENT;
+            return Environments.Development;
         }
         if (utils.isStaging()) {
-            return Environments.STAGING;
+            return Environments.Staging;
         }
         if (utils.isProduction()) {
-            return Environments.PRODUCTION;
+            return Environments.Production;
         }
-        return Environments.UNKNOWN;
+        return Environments.Unknown;
     },
     getEthToken(tokenByAddress: TokenByAddress): Token {
         return utils.getTokenBySymbol(constants.ETHER_TOKEN_SYMBOL, tokenByAddress);
diff --git a/python-packages/contract_artifacts/src/zero_ex/contract_artifacts/artifacts/MultiAssetProxy.json b/python-packages/contract_artifacts/src/zero_ex/contract_artifacts/artifacts/MultiAssetProxy.json
new file mode 100644
index 000000000..f143cd817
--- /dev/null
+++ b/python-packages/contract_artifacts/src/zero_ex/contract_artifacts/artifacts/MultiAssetProxy.json
@@ -0,0 +1,263 @@
+{
+    "schemaVersion": "2.0.0",
+    "contractName": "MultiAssetProxy",
+    "compilerOutput": {
+        "abi": [
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "bytes4"
+                    }
+                ],
+                "name": "assetProxies",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "target",
+                        "type": "address"
+                    }
+                ],
+                "name": "addAuthorizedAddress",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "authorities",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "assetProxyId",
+                        "type": "bytes4"
+                    }
+                ],
+                "name": "getAssetProxy",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "target",
+                        "type": "address"
+                    }
+                ],
+                "name": "removeAuthorizedAddress",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "owner",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "name": "index",
+                        "type": "uint256"
+                    }
+                ],
+                "name": "removeAuthorizedAddressAtIndex",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "getProxyId",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bytes4"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "pure",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [
+                    {
+                        "name": "",
+                        "type": "address"
+                    }
+                ],
+                "name": "authorized",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "bool"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "assetProxy",
+                        "type": "address"
+                    }
+                ],
+                "name": "registerAssetProxy",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "constant": true,
+                "inputs": [],
+                "name": "getAuthorizedAddresses",
+                "outputs": [
+                    {
+                        "name": "",
+                        "type": "address[]"
+                    }
+                ],
+                "payable": false,
+                "stateMutability": "view",
+                "type": "function"
+            },
+            {
+                "constant": false,
+                "inputs": [
+                    {
+                        "name": "newOwner",
+                        "type": "address"
+                    }
+                ],
+                "name": "transferOwnership",
+                "outputs": [],
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "function"
+            },
+            {
+                "payable": false,
+                "stateMutability": "nonpayable",
+                "type": "fallback"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "caller",
+                        "type": "address"
+                    }
+                ],
+                "name": "AuthorizedAddressAdded",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": true,
+                        "name": "target",
+                        "type": "address"
+                    },
+                    {
+                        "indexed": true,
+                        "name": "caller",
+                        "type": "address"
+                    }
+                ],
+                "name": "AuthorizedAddressRemoved",
+                "type": "event"
+            },
+            {
+                "anonymous": false,
+                "inputs": [
+                    {
+                        "indexed": false,
+                        "name": "id",
+                        "type": "bytes4"
+                    },
+                    {
+                        "indexed": false,
+                        "name": "assetProxy",
+                        "type": "address"
+                    }
+                ],
+                "name": "AssetProxyRegistered",
+                "type": "event"
+            }
+        ],
+        "evm": {
+            "bytecode": {
+                "linkReferences": {},
+                "object": "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"
+            }
+        }
+    },
+    "networks": {}
+}
diff --git a/yarn.lock b/yarn.lock
index a03d5e095..307d8c54b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -528,6 +528,24 @@
     ethers "~4.0.4"
     lodash "^4.17.5"
 
+"@0x/utils@^2.0.4":
+  version "2.1.1"
+  resolved "https://registry.npmjs.org/@0x/utils/-/utils-2.1.1.tgz#0a79f9ce6207a8a7ff0751366e618d0f6b9d903f"
+  dependencies:
+    "@0x/types" "^1.5.0"
+    "@0x/typescript-typings" "^3.0.6"
+    "@types/node" "*"
+    abortcontroller-polyfill "^1.1.9"
+    bignumber.js "~4.1.0"
+    chalk "^2.4.1"
+    detect-node "2.0.3"
+    ethereum-types "^1.1.4"
+    ethereumjs-util "^5.1.1"
+    ethers "~4.0.4"
+    isomorphic-fetch "^2.2.1"
+    js-sha3 "^0.7.0"
+    lodash "^4.17.5"
+
 "@0xproject/npm-cli-login@^0.0.11":
   version "0.0.11"
   resolved "https://registry.yarnpkg.com/@0xproject/npm-cli-login/-/npm-cli-login-0.0.11.tgz#3f1ec06112ce62aad300ff0575358f68aeecde2e"
@@ -546,6 +564,12 @@
   dependencies:
     "@babel/types" "^7.0.0"
 
+"@babel/helper-module-imports@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.0.0.tgz#96081b7111e486da4d2cd971ad1a4fe216cc2e3d"
+  dependencies:
+    "@babel/types" "^7.0.0"
+
 "@babel/highlight@^7.0.0":
   version "7.0.0"
   resolved "https://registry.npmjs.org/@babel/highlight/-/highlight-7.0.0.tgz#f710c38c8d458e6dd9a201afb637fcb781ce99e4"
@@ -586,6 +610,16 @@
   dependencies:
     "@emotion/memoize" "^0.6.6"
 
+"@emotion/is-prop-valid@^0.7.3":
+  version "0.7.3"
+  resolved "https://registry.npmjs.org/@emotion/is-prop-valid/-/is-prop-valid-0.7.3.tgz#a6bf4fa5387cbba59d44e698a4680f481a8da6cc"
+  dependencies:
+    "@emotion/memoize" "0.7.1"
+
+"@emotion/memoize@0.7.1":
+  version "0.7.1"
+  resolved "https://registry.npmjs.org/@emotion/memoize/-/memoize-0.7.1.tgz#e93c13942592cf5ef01aa8297444dc192beee52f"
+
 "@emotion/memoize@^0.6.6":
   version "0.6.6"
   resolved "https://registry.npmjs.org/@emotion/memoize/-/memoize-0.6.6.tgz#004b98298d04c7ca3b4f50ca2035d4f60d2eed1b"
@@ -5734,6 +5768,12 @@ domhandler@^2.3.0:
   dependencies:
     domelementtype "1"
 
+domhandler@^2.4.2:
+  version "2.4.2"
+  resolved "https://registry.npmjs.org/domhandler/-/domhandler-2.4.2.tgz#8805097e933d65e85546f726d60f5eb88b44f803"
+  dependencies:
+    domelementtype "1"
+
 dompurify@^1.0.6:
   version "1.0.7"
   resolved "https://registry.npmjs.org/dompurify/-/dompurify-1.0.7.tgz#33e5c4a5fc84df93b58ca162d1d3f28537aa3ec2"
@@ -8309,6 +8349,16 @@ html-minifier@3.5.20, html-minifier@^3.2.3:
     relateurl "0.2.x"
     uglify-js "3.4.x"
 
+html-to-react@^1.3.4:
+  version "1.3.4"
+  resolved "https://registry.npmjs.org/html-to-react/-/html-to-react-1.3.4.tgz#647b3a54fdec73a6461864b129fb0d1eec7d4589"
+  dependencies:
+    domhandler "^2.4.2"
+    escape-string-regexp "^1.0.5"
+    htmlparser2 "^3.10.0"
+    lodash.camelcase "^4.3.0"
+    ramda "^0.26"
+
 html-webpack-plugin@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/html-webpack-plugin/-/html-webpack-plugin-3.2.0.tgz#b01abbd723acaaa7b37b6af4492ebda03d9dd37b"
@@ -8321,6 +8371,17 @@ html-webpack-plugin@^3.2.0:
     toposort "^1.0.0"
     util.promisify "1.0.0"
 
+htmlparser2@^3.10.0:
+  version "3.10.0"
+  resolved "https://registry.npmjs.org/htmlparser2/-/htmlparser2-3.10.0.tgz#5f5e422dcf6119c0d983ed36260ce9ded0bee464"
+  dependencies:
+    domelementtype "^1.3.0"
+    domhandler "^2.3.0"
+    domutils "^1.5.1"
+    entities "^1.1.1"
+    inherits "^2.0.1"
+    readable-stream "^3.0.6"
+
 htmlparser2@^3.9.1:
   version "3.9.2"
   resolved "https://registry.yarnpkg.com/htmlparser2/-/htmlparser2-3.9.2.tgz#1bdf87acca0f3f9e53fa4fcceb0f4b4cbb00b338"
@@ -10398,6 +10459,10 @@ lodash.camelcase@^3.0.1:
   dependencies:
     lodash._createcompounder "^3.0.0"
 
+lodash.camelcase@^4.3.0:
+  version "4.3.0"
+  resolved "https://registry.npmjs.org/lodash.camelcase/-/lodash.camelcase-4.3.0.tgz#b28aa6288a2b9fc651035c7711f65ab6190331a6"
+
 lodash.debounce@^4.0.8:
   version "4.0.8"
   resolved "https://registry.yarnpkg.com/lodash.debounce/-/lodash.debounce-4.0.8.tgz#82d79bff30a67c4005ffd5e2515300ad9ca4d7af"
@@ -10843,6 +10908,12 @@ md5.js@^1.3.4:
     hash-base "^3.0.0"
     inherits "^2.0.1"
 
+mdast-add-list-metadata@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.npmjs.org/mdast-add-list-metadata/-/mdast-add-list-metadata-1.0.1.tgz#95e73640ce2fc1fa2dcb7ec443d09e2bfe7db4cf"
+  dependencies:
+    unist-util-visit-parents "1.1.2"
+
 mdn-data@~1.1.0:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/mdn-data/-/mdn-data-1.1.4.tgz#50b5d4ffc4575276573c4eedb8780812a8419f01"
@@ -13320,6 +13391,10 @@ ramda@^0.25.0:
   version "0.25.0"
   resolved "https://registry.yarnpkg.com/ramda/-/ramda-0.25.0.tgz#8fdf68231cffa90bc2f9460390a0cb74a29b29a9"
 
+ramda@^0.26:
+  version "0.26.1"
+  resolved "https://registry.npmjs.org/ramda/-/ramda-0.26.1.tgz#8d41351eb8111c55353617fc3bbffad8e4d35d06"
+
 randexp@0.4.6:
   version "0.4.6"
   resolved "https://registry.npmjs.org/randexp/-/randexp-0.4.6.tgz#e986ad5e5e31dae13ddd6f7b3019aa7c87f60ca3"
@@ -13469,7 +13544,7 @@ react-document-title@^2.0.3:
     prop-types "^15.5.6"
     react-side-effect "^1.0.2"
 
-react-dom@^16.3.2, react-dom@^16.4.2:
+react-dom@^16.3.2:
   version "16.4.2"
   resolved "https://registry.npmjs.org/react-dom/-/react-dom-16.4.2.tgz#4afed569689f2c561d2b8da0b819669c38a0bda4"
   dependencies:
@@ -13529,14 +13604,14 @@ react-helmet@^5.2.0:
     prop-types "^15.5.4"
     react-side-effect "^1.1.0"
 
-react-highlight@0xproject/react-highlight#2f40a42e0a3f0ad126f9f42d505b97b603fc7162:
+react-highlight@0xproject/react-highlight#699ac4d9529e33520bff4b9bd9c624d21efbba75:
   version "1.0.0"
-  resolved "https://codeload.github.com/0xproject/react-highlight/tar.gz/2f40a42e0a3f0ad126f9f42d505b97b603fc7162"
+  resolved "https://codeload.github.com/0xproject/react-highlight/tar.gz/699ac4d9529e33520bff4b9bd9c624d21efbba75"
   dependencies:
     highlight.js "^9.11.0"
     highlightjs-solidity "^1.0.5"
-    react "^16.4.2"
-    react-dom "^16.4.2"
+    react "^16.5.2"
+    react-dom "^16.5.2"
 
 react-hot-loader@^4.3.3:
   version "4.3.4"
@@ -13602,6 +13677,18 @@ react-markdown@^3.2.2:
     unist-util-visit "^1.3.0"
     xtend "^4.0.1"
 
+react-markdown@^4.0.6:
+  version "4.0.6"
+  resolved "https://registry.npmjs.org/react-markdown/-/react-markdown-4.0.6.tgz#927d44421735cd90b7634bb221e9d7d8656e01e9"
+  dependencies:
+    html-to-react "^1.3.4"
+    mdast-add-list-metadata "1.0.1"
+    prop-types "^15.6.1"
+    remark-parse "^5.0.0"
+    unified "^6.1.5"
+    unist-util-visit "^1.3.0"
+    xtend "^4.0.1"
+
 react-popper@^1.0.0-beta.6:
   version "1.0.0-beta.6"
   resolved "https://registry.npmjs.org/react-popper/-/react-popper-1.0.0-beta.6.tgz#cb27a2ac56adccbaf5f9c4132387289069240834"
@@ -13643,6 +13730,17 @@ react-router-dom@^4.1.1:
     react-router "^4.2.0"
     warning "^3.0.0"
 
+react-router-dom@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.npmjs.org/react-router-dom/-/react-router-dom-4.3.1.tgz#4c2619fc24c4fa87c9fd18f4fb4a43fe63fbd5c6"
+  dependencies:
+    history "^4.7.2"
+    invariant "^2.2.4"
+    loose-envify "^1.3.1"
+    prop-types "^15.6.1"
+    react-router "^4.3.1"
+    warning "^4.0.1"
+
 react-router@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/react-router/-/react-router-4.2.0.tgz#61f7b3e3770daeb24062dae3eedef1b054155986"
@@ -13655,6 +13753,18 @@ react-router@^4.2.0:
     prop-types "^15.5.4"
     warning "^3.0.0"
 
+react-router@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.npmjs.org/react-router/-/react-router-4.3.1.tgz#aada4aef14c809cb2e686b05cee4742234506c4e"
+  dependencies:
+    history "^4.7.2"
+    hoist-non-react-statics "^2.5.0"
+    invariant "^2.2.4"
+    loose-envify "^1.3.1"
+    path-to-regexp "^1.7.0"
+    prop-types "^15.6.1"
+    warning "^4.0.1"
+
 react-scroll@0xproject/react-scroll#pr-330-and-replace-state:
   version "1.7.11"
   resolved "https://codeload.github.com/0xproject/react-scroll/tar.gz/d2afc2729dc09980e4113d8c38a1b012ba180d81"
@@ -13775,7 +13885,7 @@ react-typist@^2.0.4:
   dependencies:
     prop-types "^15.5.10"
 
-react@^16.3.2, react@^16.4.2:
+react@^16.3.2:
   version "16.4.2"
   resolved "https://registry.npmjs.org/react/-/react-16.4.2.tgz#2cd90154e3a9d9dd8da2991149fdca3c260e129f"
   dependencies:
@@ -13901,6 +14011,14 @@ readable-stream@^1.0.33, readable-stream@~1.1.9:
     isarray "0.0.1"
     string_decoder "~0.10.x"
 
+readable-stream@^3.0.6:
+  version "3.1.1"
+  resolved "https://registry.npmjs.org/readable-stream/-/readable-stream-3.1.1.tgz#ed6bbc6c5ba58b090039ff18ce670515795aeb06"
+  dependencies:
+    inherits "^2.0.3"
+    string_decoder "^1.1.1"
+    util-deprecate "^1.0.1"
+
 readdir-scoped-modules@^1.0.0:
   version "1.0.2"
   resolved "http://registry.yarnpkg.com/readdir-scoped-modules/-/readdir-scoped-modules-1.0.2.tgz#9fafa37d286be5d92cbaebdee030dc9b5f406747"
@@ -15592,6 +15710,12 @@ string_decoder@^1.0.0, string_decoder@~1.1.1:
   dependencies:
     safe-buffer "~5.1.0"
 
+string_decoder@^1.1.1:
+  version "1.2.0"
+  resolved "https://registry.npmjs.org/string_decoder/-/string_decoder-1.2.0.tgz#fe86e738b19544afe70469243b2a1ee9240eae8d"
+  dependencies:
+    safe-buffer "~5.1.0"
+
 string_decoder@~0.10.x:
   version "0.10.31"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
@@ -15697,34 +15821,35 @@ style-loader@0.23.x:
     loader-utils "^1.1.0"
     schema-utils "^0.4.5"
 
-styled-components@^3.3.0:
-  version "3.3.0"
-  resolved "https://registry.npmjs.org/styled-components/-/styled-components-3.3.0.tgz#335b1b2b673b416cd5ec012010e237ed1f877fe9"
+styled-components@^3.3.3:
+  version "3.4.2"
+  resolved "https://registry.npmjs.org/styled-components/-/styled-components-3.4.2.tgz#8f518419932327e47fe9144824e3184b3e2da95d"
   dependencies:
     buffer "^5.0.3"
     css-to-react-native "^2.0.3"
     fbjs "^0.8.16"
     hoist-non-react-statics "^2.5.0"
-    is-plain-object "^2.0.1"
     prop-types "^15.5.4"
     react-is "^16.3.1"
     stylis "^3.5.0"
     stylis-rule-sheet "^0.0.10"
     supports-color "^3.2.3"
 
-styled-components@^3.3.3:
-  version "3.4.2"
-  resolved "https://registry.npmjs.org/styled-components/-/styled-components-3.4.2.tgz#8f518419932327e47fe9144824e3184b3e2da95d"
+styled-components@^4.0.1:
+  version "4.1.3"
+  resolved "https://registry.npmjs.org/styled-components/-/styled-components-4.1.3.tgz#4472447208e618b57e84deaaeb6acd34a5e0fe9b"
   dependencies:
-    buffer "^5.0.3"
-    css-to-react-native "^2.0.3"
-    fbjs "^0.8.16"
-    hoist-non-react-statics "^2.5.0"
+    "@babel/helper-module-imports" "^7.0.0"
+    "@emotion/is-prop-valid" "^0.7.3"
+    "@emotion/unitless" "^0.7.0"
+    babel-plugin-styled-components ">= 1"
+    css-to-react-native "^2.2.2"
+    memoize-one "^4.0.0"
     prop-types "^15.5.4"
-    react-is "^16.3.1"
+    react-is "^16.6.0"
     stylis "^3.5.0"
     stylis-rule-sheet "^0.0.10"
-    supports-color "^3.2.3"
+    supports-color "^5.5.0"
 
 styled-components@^4.0.2:
   version "4.0.2"
@@ -16821,6 +16946,10 @@ unist-util-stringify-position@^1.0.0, unist-util-stringify-position@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/unist-util-stringify-position/-/unist-util-stringify-position-1.1.1.tgz#3ccbdc53679eed6ecf3777dd7f5e3229c1b6aa3c"
 
+unist-util-visit-parents@1.1.2:
+  version "1.1.2"
+  resolved "https://registry.npmjs.org/unist-util-visit-parents/-/unist-util-visit-parents-1.1.2.tgz#f6e3afee8bdbf961c0e6f028ea3c0480028c3d06"
+
 unist-util-visit@^1.1.0, unist-util-visit@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/unist-util-visit/-/unist-util-visit-1.3.0.tgz#41ca7c82981fd1ce6c762aac397fc24e35711444"
@@ -16959,7 +17088,7 @@ utf8@^2.1.1:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/utf8/-/utf8-2.1.2.tgz#1fa0d9270e9be850d9b05027f63519bf46457d96"
 
-util-deprecate@^1.0.2, util-deprecate@~1.0.1:
+util-deprecate@^1.0.1, util-deprecate@^1.0.2, util-deprecate@~1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"