Publish

- @0x/contracts-asset-proxy@3.6.3
 - @0x/contracts-broker@1.1.11
 - @0x/contracts-coordinator@3.1.12
 - @0x/contracts-dev-utils@1.3.10
 - @0x/contracts-erc1155@2.1.12
 - @0x/contracts-erc20@3.2.6
 - @0x/contracts-erc721@3.1.12
 - @0x/contracts-exchange-forwarder@4.2.12
 - @0x/contracts-exchange-libs@4.3.12
 - @0x/contracts-exchange@3.2.12
 - @0x/contracts-extensions@6.2.6
 - @0x/contracts-integrations@2.7.5
 - @0x/contracts-multisig@4.1.12
 - @0x/contracts-staking@2.0.19
 - @0x/contracts-test-utils@5.3.9
 - @0x/contracts-utils@4.5.6
 - @0x/contracts-zero-ex@0.7.0
 - @0x/asset-swapper@5.0.1
 - @0x/contract-addresses@5.1.0
 - @0x/contract-artifacts@3.8.2
 - @0x/contract-wrappers-test@12.2.22
 - @0x/contract-wrappers@13.9.4
 - @0x/migrations@6.4.6
 - @0x/order-utils@10.4.4

.github/workflows/publish.yml

@@ -0,0 +1,48 @@
+name: publish
+
+on:
+  workflow_dispatch:
+      inputs:
+          ci_status:
+              description: 'required CI status'
+              default: 'success'
+              required: true
+
+jobs:
+    publish:
+        runs-on: ubuntu-latest
+        steps:
+            - name: 'check successful status'
+              run: |
+                  REF_STATUS=$(curl -s \
+                  'https://api.github.com/repos/${{ github.repository }}/commits/${{ github.ref }}/status' \
+                  | jq .state)
+                  [[ "${REF_STATUS}" == '"${{ github.event.inputs.ci_status }}"' ]] || \
+                  (echo "::error ::${{ github.ref }} does not have a successful CI status" && false)
+            - uses: actions/checkout@v2
+              with:
+                ref: 'development'
+                fetch-depth: 0
+            - uses: actions/setup-node@v1
+              with:
+                node-version: 10
+            - uses: actions/setup-python@v2
+            - name: 'configure git'
+              run: |
+                  git config --global user.email "github-actions@github.com"
+                  git config --global user.name "Github Actions"
+            - name: 'install dependencies'
+              run: |
+                  yarn -D
+            - name: 'build and publish'
+              run: |
+                  echo '//registry.npmjs.org/:_authToken=${NPM_TOKEN}' > .npmrc
+                  npm run run:publish:gha
+              env:
+                  NPM_TOKEN: ${{ secrets.NPM_PUBLISH_TOKEN }}
+                  GITHUB_TOKEN: ${{ github.token }}
+            - name: 'merge into main branch'
+              run: |
+                  git checkout main && \
+                  git merge ${{ github.ref }} && \
+                  git push

.prettierignore

@@ -82,4 +82,5 @@ lib
 /packages/asset-swapper/test/generated-wrappers
 package.json
 packages/*/docs
+docs/
 *.sol

README.md

@@ -8,7 +8,7 @@ This repository is a monorepo including the 0x protocol smart contracts and nume
 
 [website-url]: https://0x.org
 
-[![CircleCI](https://circleci.com/gh/0xProject/0x-monorepo.svg?style=svg&circle-token=61bf7cd8c9b4e11b132089dfcffdd1be277d1e0c)](https://circleci.com/gh/0xProject/0x-monorepo)
+[![CircleCI](https://circleci.com/gh/0xProject/protocol.svg?style=svg&circle-token=61bf7cd8c9b4e11b132089dfcffdd1be277d1e0c)](https://circleci.com/gh/0xProject/protocool)
 [![Coverage Status](https://coveralls.io/repos/github/0xProject/0x-monorepo/badge.svg?branch=development)](https://coveralls.io/github/0xProject/0x-monorepo?branch=development)
 [![Discord](https://img.shields.io/badge/chat-discord.chat-yellow.svg?style=flat)](https://discordapp.com/invite/d3FTX3M)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
@@ -92,7 +92,7 @@ yarn build
 To build a specific package:
 
 ```bash
-PKG=@0x/web3-wrapper yarn build
+PKG=@0x/contract-wrappers yarn build
 ```
 
 To build all contracts packages:
@@ -115,7 +115,7 @@ To watch a specific package and all it's dependent packages:
 PKG=[NPM_PACKAGE_NAME] yarn watch
 
 e.g
-PKG=@0x/web3-wrapper yarn watch
+PKG=@0x/contract-wrappers yarn watch
 ```
 
 ### Clean
@@ -143,7 +143,7 @@ yarn rebuild
 To re-build (clean & build) a specific package & it's deps:
 
 ```bash
-PKG=0x.js yarn rebuild
+PKG=@0x/contract-wrappers yarn rebuild
 ```
 
 ### Lint
@@ -157,7 +157,7 @@ yarn lint
 Lint a specific package:
 
 ```bash
-PKG=0x.js yarn lint
+PKG=@0x/contract-wrappers yarn lint
 ```
 
 ### Run Tests
@@ -171,7 +171,7 @@ yarn test
 Run a specific package's test:
 
 ```bash
-PKG=@0x/web3-wrapper yarn test
+PKG=@0x/contract-wrappers yarn test
 ```
 
 Run all contracts packages tests:

contracts/asset-proxy/CHANGELOG.json

@@ -1,4 +1,41 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "3.6.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "3.6.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "3.6.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "3.6.0",
+        "changes": [
+            {
+                "note": "Add `SwerveBridge` and `SnowSwapBridge` (duplicate of `CurveBridge`)",
+                "pr": 2707
+            }
+        ],
+        "timestamp": 1603833198
+    },
     {
         "version": "3.5.0",
         "changes": [

contracts/asset-proxy/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.6.3 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.6.2 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v3.6.1 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v3.6.0 - _October 27, 2020_
+
+    * Add `SwerveBridge` and `SnowSwapBridge` (duplicate of `CurveBridge`) (#2707)
+
 ## v3.5.0 - _October 21, 2020_
 
     * Update `CurveBridge` to support more varied curves (#2633)

contracts/asset-proxy/contracts/src/bridges/ShellBridge.sol

@@ -51,16 +51,15 @@ contract ShellBridge is
         external
         returns (bytes4 success)
     {
-        // Decode the bridge data to get the `fromTokenAddress`.
-        (address fromTokenAddress) = abi.decode(bridgeData, (address));
+        // Decode the bridge data to get the `fromTokenAddress` and `pool`.
+        (address fromTokenAddress, address pool) = abi.decode(bridgeData, (address, address));
 
         uint256 fromTokenBalance = IERC20Token(fromTokenAddress).balanceOf(address(this));
-        IShell exchange = IShell(_getShellAddress());
         // Grant an allowance to the exchange to spend `fromTokenAddress` token.
-        LibERC20Token.approveIfBelow(fromTokenAddress, address(exchange), fromTokenBalance);
+        LibERC20Token.approveIfBelow(fromTokenAddress, pool, fromTokenBalance);
 
         // Try to sell all of this contract's `fromTokenAddress` token balance.
-        uint256 boughtAmount = exchange.originSwap(
+        uint256 boughtAmount = IShell(pool).originSwap(
             fromTokenAddress,
             toTokenAddress,
             fromTokenBalance,

contracts/asset-proxy/contracts/src/bridges/SnowSwapBridge.sol

@@ -0,0 +1,119 @@
+
+/*
+
+  Copyright 2019 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.5.9;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
+import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
+import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
+import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
+import "../interfaces/IERC20Bridge.sol";
+import "../interfaces/ICurve.sol";
+
+
+// solhint-disable not-rely-on-time
+// solhint-disable space-after-comma
+contract SnowSwapBridge is
+    IERC20Bridge,
+    IWallet,
+    DeploymentConstants
+{
+    struct SnowSwapBridgeData {
+        address curveAddress;
+        bytes4 exchangeFunctionSelector;
+        address fromTokenAddress;
+        int128 fromCoinIdx;
+        int128 toCoinIdx;
+    }
+
+    /// @dev Callback for `ICurve`. Tries to buy `amount` of
+    ///      `toTokenAddress` tokens by selling the entirety of the opposing asset
+    ///      (DAI, USDC) to the Curve contract, then transfers the bought
+    ///      tokens to `to`.
+    /// @param toTokenAddress The token to give to `to` (i.e DAI, USDC, USDT).
+    /// @param from The maker (this contract).
+    /// @param to The recipient of the bought tokens.
+    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
+    /// @param bridgeData The abi-encoeded "from" token address.
+    /// @return success The magic bytes if successful.
+    function bridgeTransferFrom(
+        address toTokenAddress,
+        address from,
+        address to,
+        uint256 amount,
+        bytes calldata bridgeData
+    )
+        external
+        returns (bytes4 success)
+    {
+        // Decode the bridge data to get the SnowSwap metadata.
+        SnowSwapBridgeData memory data = abi.decode(bridgeData, (SnowSwapBridgeData));
+
+        require(toTokenAddress != data.fromTokenAddress, "SnowSwapBridge/INVALID_PAIR");
+        uint256 fromTokenBalance = IERC20Token(data.fromTokenAddress).balanceOf(address(this));
+        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
+        LibERC20Token.approveIfBelow(data.fromTokenAddress, data.curveAddress, fromTokenBalance);
+
+        // Try to sell all of this contract's `fromTokenAddress` token balance.
+        {
+            (bool didSucceed, bytes memory resultData) =
+                data.curveAddress.call(abi.encodeWithSelector(
+                    data.exchangeFunctionSelector,
+                    data.fromCoinIdx,
+                    data.toCoinIdx,
+                    // dx
+                    fromTokenBalance,
+                    // min dy
+                    amount
+                ));
+            if (!didSucceed) {
+                assembly { revert(add(resultData, 32), mload(resultData)) }
+            }
+        }
+
+        uint256 toTokenBalance = IERC20Token(toTokenAddress).balanceOf(address(this));
+        // Transfer the converted `toToken`s to `to`.
+        LibERC20Token.transfer(toTokenAddress, to, toTokenBalance);
+
+        emit ERC20BridgeTransfer(
+            data.fromTokenAddress,
+            toTokenAddress,
+            fromTokenBalance,
+            toTokenBalance,
+            from,
+            to
+        );
+        return BRIDGE_SUCCESS;
+    }
+
+    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
+    ///      and sign for itself in orders. Always succeeds.
+    /// @return magicValue Magic success bytes, always.
+    function isValidSignature(
+        bytes32,
+        bytes calldata
+    )
+        external
+        view
+        returns (bytes4 magicValue)
+    {
+        return LEGACY_WALLET_MAGIC_VALUE;
+    }
+}

contracts/asset-proxy/contracts/src/bridges/SwerveBridge.sol

@@ -0,0 +1,119 @@
+
+/*
+
+  Copyright 2019 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.5.9;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
+import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
+import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
+import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
+import "../interfaces/IERC20Bridge.sol";
+import "../interfaces/ICurve.sol";
+
+
+// solhint-disable not-rely-on-time
+// solhint-disable space-after-comma
+contract SwerveBridge is
+    IERC20Bridge,
+    IWallet,
+    DeploymentConstants
+{
+    struct SwerveBridgeData {
+        address curveAddress;
+        bytes4 exchangeFunctionSelector;
+        address fromTokenAddress;
+        int128 fromCoinIdx;
+        int128 toCoinIdx;
+    }
+
+    /// @dev Callback for `ICurve`. Tries to buy `amount` of
+    ///      `toTokenAddress` tokens by selling the entirety of the opposing asset
+    ///      (DAI, USDC) to the Curve contract, then transfers the bought
+    ///      tokens to `to`.
+    /// @param toTokenAddress The token to give to `to` (i.e DAI, USDC, USDT).
+    /// @param from The maker (this contract).
+    /// @param to The recipient of the bought tokens.
+    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
+    /// @param bridgeData The abi-encoeded "from" token address.
+    /// @return success The magic bytes if successful.
+    function bridgeTransferFrom(
+        address toTokenAddress,
+        address from,
+        address to,
+        uint256 amount,
+        bytes calldata bridgeData
+    )
+        external
+        returns (bytes4 success)
+    {
+        // Decode the bridge data to get the SwerveBridgeData metadata.
+        SwerveBridgeData memory data = abi.decode(bridgeData, (SwerveBridgeData));
+
+        require(toTokenAddress != data.fromTokenAddress, "SwerveBridge/INVALID_PAIR");
+        uint256 fromTokenBalance = IERC20Token(data.fromTokenAddress).balanceOf(address(this));
+        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
+        LibERC20Token.approveIfBelow(data.fromTokenAddress, data.curveAddress, fromTokenBalance);
+
+        // Try to sell all of this contract's `fromTokenAddress` token balance.
+        {
+            (bool didSucceed, bytes memory resultData) =
+                data.curveAddress.call(abi.encodeWithSelector(
+                    data.exchangeFunctionSelector,
+                    data.fromCoinIdx,
+                    data.toCoinIdx,
+                    // dx
+                    fromTokenBalance,
+                    // min dy
+                    amount
+                ));
+            if (!didSucceed) {
+                assembly { revert(add(resultData, 32), mload(resultData)) }
+            }
+        }
+
+        uint256 toTokenBalance = IERC20Token(toTokenAddress).balanceOf(address(this));
+        // Transfer the converted `toToken`s to `to`.
+        LibERC20Token.transfer(toTokenAddress, to, toTokenBalance);
+
+        emit ERC20BridgeTransfer(
+            data.fromTokenAddress,
+            toTokenAddress,
+            fromTokenBalance,
+            toTokenBalance,
+            from,
+            to
+        );
+        return BRIDGE_SUCCESS;
+    }
+
+    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
+    ///      and sign for itself in orders. Always succeeds.
+    /// @return magicValue Magic success bytes, always.
+    function isValidSignature(
+        bytes32,
+        bytes calldata
+    )
+        external
+        view
+        returns (bytes4 magicValue)
+    {
+        return LEGACY_WALLET_MAGIC_VALUE;
+    }
+}

contracts/asset-proxy/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-asset-proxy",
-    "version": "3.5.0",
+    "version": "3.6.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -38,7 +38,7 @@
         "docs:json": "typedoc --excludePrivate --excludeExternals --excludeProtected --ignoreCompilerErrors --target ES5 --tsconfig typedoc-tsconfig.json --json $JSON_FILE_PATH $PROJECT_FILES"
     },
     "config": {
-        "abis": "./test/generated-artifacts/@(BalancerBridge|BancorBridge|ChaiBridge|CreamBridge|CurveBridge|DODOBridge|DexForwarderBridge|DydxBridge|ERC1155Proxy|ERC20BridgeProxy|ERC20Proxy|ERC721Proxy|Eth2DaiBridge|IAssetData|IAssetProxy|IAssetProxyDispatcher|IAuthorizable|IBalancerPool|IBancorNetwork|IChai|ICurve|IDydx|IDydxBridge|IERC20Bridge|IEth2Dai|IGasToken|IKyberNetworkProxy|IMStable|IMooniswap|IShell|IUniswapExchange|IUniswapExchangeFactory|IUniswapV2Router01|KyberBridge|MStableBridge|MixinAssetProxyDispatcher|MixinAuthorizable|MixinGasToken|MooniswapBridge|MultiAssetProxy|Ownable|ShellBridge|StaticCallProxy|SushiSwapBridge|TestBancorBridge|TestChaiBridge|TestDexForwarderBridge|TestDydxBridge|TestERC20Bridge|TestEth2DaiBridge|TestKyberBridge|TestStaticCallTarget|TestUniswapBridge|TestUniswapV2Bridge|UniswapBridge|UniswapV2Bridge).json",
+        "abis": "./test/generated-artifacts/@(BalancerBridge|BancorBridge|ChaiBridge|CreamBridge|CurveBridge|DODOBridge|DexForwarderBridge|DydxBridge|ERC1155Proxy|ERC20BridgeProxy|ERC20Proxy|ERC721Proxy|Eth2DaiBridge|IAssetData|IAssetProxy|IAssetProxyDispatcher|IAuthorizable|IBalancerPool|IBancorNetwork|IChai|ICurve|IDydx|IDydxBridge|IERC20Bridge|IEth2Dai|IGasToken|IKyberNetworkProxy|IMStable|IMooniswap|IShell|IUniswapExchange|IUniswapExchangeFactory|IUniswapV2Router01|KyberBridge|MStableBridge|MixinAssetProxyDispatcher|MixinAuthorizable|MixinGasToken|MooniswapBridge|MultiAssetProxy|Ownable|ShellBridge|SnowSwapBridge|StaticCallProxy|SushiSwapBridge|SwerveBridge|TestBancorBridge|TestChaiBridge|TestDexForwarderBridge|TestDydxBridge|TestERC20Bridge|TestEth2DaiBridge|TestKyberBridge|TestStaticCallTarget|TestUniswapBridge|TestUniswapV2Bridge|UniswapBridge|UniswapV2Bridge).json",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
@@ -51,13 +51,13 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/protocol",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contract-wrappers": "^13.9.0",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/contracts-utils": "^4.5.2",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contract-wrappers": "^13.9.4",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/contracts-utils": "^4.5.6",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
         "@types/lodash": "4.14.104",
@@ -79,16 +79,16 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
-        "@0x/contracts-erc1155": "^2.1.8",
-        "@0x/contracts-erc20": "^3.2.2",
-        "@0x/contracts-erc721": "^3.1.8",
-        "@0x/contracts-exchange-libs": "^4.3.8",
-        "@0x/order-utils": "^10.4.0",
-        "@0x/types": "^3.2.4",
+        "@0x/base-contract": "^6.2.11",
+        "@0x/contracts-erc1155": "^2.1.12",
+        "@0x/contracts-erc20": "^3.2.6",
+        "@0x/contracts-erc721": "^3.1.12",
+        "@0x/contracts-exchange-libs": "^4.3.12",
+        "@0x/order-utils": "^10.4.4",
+        "@0x/types": "^3.3.0",
         "@0x/typescript-typings": "^5.1.5",
-        "@0x/utils": "^5.6.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/utils": "^6.1.0",
+        "@0x/web3-wrapper": "^7.2.8",
         "ethereum-types": "^3.3.3",
         "lodash": "^4.17.11"
     },

contracts/asset-proxy/src/artifacts.ts

@@ -47,8 +47,10 @@ import * as MStableBridge from '../generated-artifacts/MStableBridge.json';
 import * as MultiAssetProxy from '../generated-artifacts/MultiAssetProxy.json';
 import * as Ownable from '../generated-artifacts/Ownable.json';
 import * as ShellBridge from '../generated-artifacts/ShellBridge.json';
+import * as SnowSwapBridge from '../generated-artifacts/SnowSwapBridge.json';
 import * as StaticCallProxy from '../generated-artifacts/StaticCallProxy.json';
 import * as SushiSwapBridge from '../generated-artifacts/SushiSwapBridge.json';
+import * as SwerveBridge from '../generated-artifacts/SwerveBridge.json';
 import * as TestBancorBridge from '../generated-artifacts/TestBancorBridge.json';
 import * as TestChaiBridge from '../generated-artifacts/TestChaiBridge.json';
 import * as TestDexForwarderBridge from '../generated-artifacts/TestDexForwarderBridge.json';
@@ -85,7 +87,9 @@ export const artifacts = {
     MixinGasToken: MixinGasToken as ContractArtifact,
     MooniswapBridge: MooniswapBridge as ContractArtifact,
     ShellBridge: ShellBridge as ContractArtifact,
+    SnowSwapBridge: SnowSwapBridge as ContractArtifact,
     SushiSwapBridge: SushiSwapBridge as ContractArtifact,
+    SwerveBridge: SwerveBridge as ContractArtifact,
     UniswapBridge: UniswapBridge as ContractArtifact,
     UniswapV2Bridge: UniswapV2Bridge as ContractArtifact,
     IAssetData: IAssetData as ContractArtifact,

contracts/asset-proxy/src/wrappers.ts

@@ -45,8 +45,10 @@ export * from '../generated-wrappers/mooniswap_bridge';
 export * from '../generated-wrappers/multi_asset_proxy';
 export * from '../generated-wrappers/ownable';
 export * from '../generated-wrappers/shell_bridge';
+export * from '../generated-wrappers/snow_swap_bridge';
 export * from '../generated-wrappers/static_call_proxy';
 export * from '../generated-wrappers/sushi_swap_bridge';
+export * from '../generated-wrappers/swerve_bridge';
 export * from '../generated-wrappers/test_bancor_bridge';
 export * from '../generated-wrappers/test_chai_bridge';
 export * from '../generated-wrappers/test_dex_forwarder_bridge';

contracts/asset-proxy/test/artifacts.ts

@@ -47,8 +47,10 @@ import * as MStableBridge from '../test/generated-artifacts/MStableBridge.json';
 import * as MultiAssetProxy from '../test/generated-artifacts/MultiAssetProxy.json';
 import * as Ownable from '../test/generated-artifacts/Ownable.json';
 import * as ShellBridge from '../test/generated-artifacts/ShellBridge.json';
+import * as SnowSwapBridge from '../test/generated-artifacts/SnowSwapBridge.json';
 import * as StaticCallProxy from '../test/generated-artifacts/StaticCallProxy.json';
 import * as SushiSwapBridge from '../test/generated-artifacts/SushiSwapBridge.json';
+import * as SwerveBridge from '../test/generated-artifacts/SwerveBridge.json';
 import * as TestBancorBridge from '../test/generated-artifacts/TestBancorBridge.json';
 import * as TestChaiBridge from '../test/generated-artifacts/TestChaiBridge.json';
 import * as TestDexForwarderBridge from '../test/generated-artifacts/TestDexForwarderBridge.json';
@@ -85,7 +87,9 @@ export const artifacts = {
     MixinGasToken: MixinGasToken as ContractArtifact,
     MooniswapBridge: MooniswapBridge as ContractArtifact,
     ShellBridge: ShellBridge as ContractArtifact,
+    SnowSwapBridge: SnowSwapBridge as ContractArtifact,
     SushiSwapBridge: SushiSwapBridge as ContractArtifact,
+    SwerveBridge: SwerveBridge as ContractArtifact,
     UniswapBridge: UniswapBridge as ContractArtifact,
     UniswapV2Bridge: UniswapV2Bridge as ContractArtifact,
     IAssetData: IAssetData as ContractArtifact,

contracts/asset-proxy/test/wrappers.ts

@@ -45,8 +45,10 @@ export * from '../test/generated-wrappers/mooniswap_bridge';
 export * from '../test/generated-wrappers/multi_asset_proxy';
 export * from '../test/generated-wrappers/ownable';
 export * from '../test/generated-wrappers/shell_bridge';
+export * from '../test/generated-wrappers/snow_swap_bridge';
 export * from '../test/generated-wrappers/static_call_proxy';
 export * from '../test/generated-wrappers/sushi_swap_bridge';
+export * from '../test/generated-wrappers/swerve_bridge';
 export * from '../test/generated-wrappers/test_bancor_bridge';
 export * from '../test/generated-wrappers/test_chai_bridge';
 export * from '../test/generated-wrappers/test_dex_forwarder_bridge';

contracts/asset-proxy/tsconfig.json

@@ -45,8 +45,10 @@
         "generated-artifacts/MultiAssetProxy.json",
         "generated-artifacts/Ownable.json",
         "generated-artifacts/ShellBridge.json",
+        "generated-artifacts/SnowSwapBridge.json",
         "generated-artifacts/StaticCallProxy.json",
         "generated-artifacts/SushiSwapBridge.json",
+        "generated-artifacts/SwerveBridge.json",
         "generated-artifacts/TestBancorBridge.json",
         "generated-artifacts/TestChaiBridge.json",
         "generated-artifacts/TestDexForwarderBridge.json",
@@ -101,8 +103,10 @@
         "test/generated-artifacts/MultiAssetProxy.json",
         "test/generated-artifacts/Ownable.json",
         "test/generated-artifacts/ShellBridge.json",
+        "test/generated-artifacts/SnowSwapBridge.json",
         "test/generated-artifacts/StaticCallProxy.json",
         "test/generated-artifacts/SushiSwapBridge.json",
+        "test/generated-artifacts/SwerveBridge.json",
         "test/generated-artifacts/TestBancorBridge.json",
         "test/generated-artifacts/TestChaiBridge.json",
         "test/generated-artifacts/TestDexForwarderBridge.json",

contracts/broker/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "1.1.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "1.1.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "1.1.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "1.1.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "1.1.7",

contracts/broker/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.1.11 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v1.1.10 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v1.1.9 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v1.1.8 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v1.1.7 - _October 21, 2020_
 
     * Dependencies updated

contracts/broker/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-broker",
-    "version": "1.1.7",
+    "version": "1.1.11",
     "engines": {
         "node": ">=6.12"
     },
@@ -51,20 +51,20 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-asset-proxy": "^3.5.0",
-        "@0x/contracts-erc20": "^3.2.2",
-        "@0x/contracts-erc721": "^3.1.8",
-        "@0x/contracts-exchange": "^3.2.8",
-        "@0x/contracts-exchange-libs": "^4.3.8",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/contracts-utils": "^4.5.2",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-asset-proxy": "^3.6.3",
+        "@0x/contracts-erc20": "^3.2.6",
+        "@0x/contracts-erc721": "^3.1.12",
+        "@0x/contracts-exchange": "^3.2.12",
+        "@0x/contracts-exchange-libs": "^4.3.12",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/contracts-utils": "^4.5.6",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/types": "^3.3.0",
+        "@0x/web3-wrapper": "^7.2.8",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -84,10 +84,10 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
-        "@0x/order-utils": "^10.4.0",
+        "@0x/base-contract": "^6.2.11",
+        "@0x/order-utils": "^10.4.4",
         "@0x/typescript-typings": "^5.1.5",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.1.0",
         "ethereum-types": "^3.3.3"
     },
     "publishConfig": {

contracts/coordinator/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "3.1.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "3.1.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "3.1.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "3.1.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "3.1.8",

contracts/coordinator/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.1.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.1.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v3.1.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v3.1.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v3.1.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/coordinator/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-coordinator",
-    "version": "3.1.8",
+    "version": "3.1.12",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,17 +52,17 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-asset-proxy": "^3.5.0",
-        "@0x/contracts-dev-utils": "^1.3.6",
-        "@0x/contracts-erc20": "^3.2.2",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/order-utils": "^10.4.0",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-asset-proxy": "^3.6.3",
+        "@0x/contracts-dev-utils": "^1.3.10",
+        "@0x/contracts-erc20": "^3.2.6",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/order-utils": "^10.4.4",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.2.8",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -82,16 +82,16 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/assert": "^3.0.13",
-        "@0x/base-contract": "^6.2.7",
-        "@0x/contract-addresses": "^4.12.0",
-        "@0x/contracts-exchange": "^3.2.8",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/contracts-utils": "^4.5.2",
-        "@0x/json-schemas": "^5.2.3",
-        "@0x/types": "^3.2.4",
+        "@0x/assert": "^3.0.17",
+        "@0x/base-contract": "^6.2.11",
+        "@0x/contract-addresses": "^5.1.0",
+        "@0x/contracts-exchange": "^3.2.12",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/contracts-utils": "^4.5.6",
+        "@0x/json-schemas": "^5.3.3",
+        "@0x/types": "^3.3.0",
         "@0x/typescript-typings": "^5.1.5",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.1.0",
         "ethereum-types": "^3.3.3",
         "http-status-codes": "^1.3.2"
     },

contracts/dev-utils/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "1.3.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "1.3.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "1.3.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "1.3.7",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "1.3.6",

contracts/dev-utils/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.3.10 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v1.3.9 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v1.3.8 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v1.3.7 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v1.3.6 - _October 21, 2020_
 
     * Dependencies updated

contracts/dev-utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-dev-utils",
-    "version": "1.3.6",
+    "version": "1.3.10",
     "engines": {
         "node": ">=6.12"
     },
@@ -41,17 +41,17 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/dev-utils",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/assert": "^3.0.13",
-        "@0x/contracts-asset-proxy": "^3.5.0",
-        "@0x/contracts-erc20": "^3.2.2",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/assert": "^3.0.17",
+        "@0x/contracts-asset-proxy": "^3.6.3",
+        "@0x/contracts-erc20": "^3.2.6",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
-        "@0x/utils": "^5.6.3",
+        "@0x/types": "^3.3.0",
+        "@0x/utils": "^6.1.0",
         "ethereum-types": "^3.3.3",
         "ethers": "~4.0.4",
         "npm-run-all": "^4.1.2",
@@ -63,7 +63,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.11",
         "@types/node": "12.12.54"
     },
     "publishConfig": {

contracts/erc1155/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "2.1.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "2.1.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "2.1.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "2.1.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "2.1.8",

contracts/erc1155/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.1.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v2.1.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v2.1.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v2.1.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v2.1.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/erc1155/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc1155",
-    "version": "2.1.8",
+    "version": "2.1.12",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,14 +52,14 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/tokens",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-utils": "^4.5.2",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-utils": "^4.5.6",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.0",
         "@0x/typescript-typings": "^5.1.5",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
@@ -80,10 +80,10 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/utils": "^5.6.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/base-contract": "^6.2.11",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/utils": "^6.1.0",
+        "@0x/web3-wrapper": "^7.2.8",
         "lodash": "^4.17.11"
     },
     "publishConfig": {

contracts/erc20/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "3.2.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "3.2.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "3.2.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "3.2.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "3.2.2",

contracts/erc20/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.2.6 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.2.5 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v3.2.4 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v3.2.3 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v3.2.2 - _October 21, 2020_
 
     * Dependencies updated

contracts/erc20/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc20",
-    "version": "3.2.2",
+    "version": "3.2.6",
     "engines": {
         "node": ">=6.12"
     },
@@ -51,18 +51,18 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/tokens",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/contracts-utils": "^4.5.2",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/contracts-utils": "^4.5.6",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.0",
         "@0x/typescript-typings": "^5.1.5",
-        "@0x/utils": "^5.6.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/utils": "^6.1.0",
+        "@0x/web3-wrapper": "^7.2.8",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -82,7 +82,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7"
+        "@0x/base-contract": "^6.2.11"
     },
     "publishConfig": {
         "access": "public"

contracts/erc721/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "3.1.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "3.1.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "3.1.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "3.1.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "3.1.8",

contracts/erc721/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.1.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.1.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v3.1.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v3.1.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v3.1.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/erc721/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc721",
-    "version": "3.1.8",
+    "version": "3.1.12",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,18 +52,18 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/tokens",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/contracts-utils": "^4.5.2",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/contracts-utils": "^4.5.6",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.0",
         "@0x/typescript-typings": "^5.1.5",
-        "@0x/utils": "^5.6.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/utils": "^6.1.0",
+        "@0x/web3-wrapper": "^7.2.8",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -84,7 +84,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7"
+        "@0x/base-contract": "^6.2.11"
     },
     "publishConfig": {
         "access": "public"

contracts/exchange-forwarder/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "4.2.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "4.2.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "4.2.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "4.2.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "4.2.8",

contracts/exchange-forwarder/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.2.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v4.2.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v4.2.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v4.2.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v4.2.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/exchange-forwarder/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-exchange-forwarder",
-    "version": "4.2.8",
+    "version": "4.2.12",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,25 +52,25 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-asset-proxy": "^3.5.0",
-        "@0x/contracts-dev-utils": "^1.3.6",
-        "@0x/contracts-erc1155": "^2.1.8",
-        "@0x/contracts-erc20": "^3.2.2",
-        "@0x/contracts-erc721": "^3.1.8",
-        "@0x/contracts-exchange": "^3.2.8",
-        "@0x/contracts-exchange-libs": "^4.3.8",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/contracts-utils": "^4.5.2",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/order-utils": "^10.4.0",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-asset-proxy": "^3.6.3",
+        "@0x/contracts-dev-utils": "^1.3.10",
+        "@0x/contracts-erc1155": "^2.1.12",
+        "@0x/contracts-erc20": "^3.2.6",
+        "@0x/contracts-erc721": "^3.1.12",
+        "@0x/contracts-exchange": "^3.2.12",
+        "@0x/contracts-exchange-libs": "^4.3.12",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/contracts-utils": "^4.5.6",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/order-utils": "^10.4.4",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
-        "@0x/utils": "^5.6.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/types": "^3.3.0",
+        "@0x/utils": "^6.1.0",
+        "@0x/web3-wrapper": "^7.2.8",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -90,7 +90,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.11",
         "@0x/typescript-typings": "^5.1.5",
         "ethereum-types": "^3.3.3"
     },

contracts/exchange-libs/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "4.3.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "4.3.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "4.3.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "4.3.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "4.3.8",

contracts/exchange-libs/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.3.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v4.3.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v4.3.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v4.3.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v4.3.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/exchange-libs/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-exchange-libs",
-    "version": "4.3.8",
+    "version": "4.3.12",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,14 +52,14 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/libs",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/sol-compiler": "^4.2.3",
-        "@0x/subproviders": "^6.1.5",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/sol-compiler": "^4.2.7",
+        "@0x/subproviders": "^6.1.9",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.2.8",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -80,13 +80,13 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/contracts-utils": "^4.5.2",
-        "@0x/order-utils": "^10.4.0",
-        "@0x/types": "^3.2.4",
+        "@0x/base-contract": "^6.2.11",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/contracts-utils": "^4.5.6",
+        "@0x/order-utils": "^10.4.4",
+        "@0x/types": "^3.3.0",
         "@0x/typescript-typings": "^5.1.5",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.1.0",
         "ethereum-types": "^3.3.3"
     },
     "publishConfig": {

contracts/exchange/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "3.2.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "3.2.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "3.2.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "3.2.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "3.2.8",

contracts/exchange/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.2.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.2.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v3.2.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v3.2.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v3.2.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/exchange/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-exchange",
-    "version": "3.2.8",
+    "version": "3.2.12",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,21 +52,21 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/protocol",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-asset-proxy": "^3.5.0",
-        "@0x/contracts-exchange-libs": "^4.3.8",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-multisig": "^4.1.8",
-        "@0x/contracts-staking": "^2.0.15",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/contracts-utils": "^4.5.2",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-asset-proxy": "^3.6.3",
+        "@0x/contracts-exchange-libs": "^4.3.12",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-multisig": "^4.1.12",
+        "@0x/contracts-staking": "^2.0.19",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/contracts-utils": "^4.5.6",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.0",
         "@0x/typescript-typings": "^5.1.5",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.2.8",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -88,13 +88,13 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
-        "@0x/contracts-dev-utils": "^1.3.6",
-        "@0x/contracts-erc1155": "^2.1.8",
-        "@0x/contracts-erc20": "^3.2.2",
-        "@0x/contracts-erc721": "^3.1.8",
-        "@0x/order-utils": "^10.4.0",
-        "@0x/utils": "^5.6.3",
+        "@0x/base-contract": "^6.2.11",
+        "@0x/contracts-dev-utils": "^1.3.10",
+        "@0x/contracts-erc1155": "^2.1.12",
+        "@0x/contracts-erc20": "^3.2.6",
+        "@0x/contracts-erc721": "^3.1.12",
+        "@0x/order-utils": "^10.4.4",
+        "@0x/utils": "^6.1.0",
         "lodash": "^4.17.11"
     },
     "publishConfig": {

contracts/extensions/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "6.2.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "6.2.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "6.2.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "6.2.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "6.2.2",

contracts/extensions/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v6.2.6 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v6.2.5 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v6.2.4 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v6.2.3 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v6.2.2 - _October 21, 2020_
 
     * Dependencies updated

contracts/extensions/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-extensions",
-    "version": "6.2.2",
+    "version": "6.2.6",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,23 +52,23 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-asset-proxy": "^3.5.0",
-        "@0x/contracts-dev-utils": "^1.3.6",
-        "@0x/contracts-erc20": "^3.2.2",
-        "@0x/contracts-erc721": "^3.1.8",
-        "@0x/contracts-exchange": "^3.2.8",
-        "@0x/contracts-exchange-libs": "^4.3.8",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-utils": "^4.5.2",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/order-utils": "^10.4.0",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-asset-proxy": "^3.6.3",
+        "@0x/contracts-dev-utils": "^1.3.10",
+        "@0x/contracts-erc20": "^3.2.6",
+        "@0x/contracts-erc721": "^3.1.12",
+        "@0x/contracts-exchange": "^3.2.12",
+        "@0x/contracts-exchange-libs": "^4.3.12",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-utils": "^4.5.6",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/order-utils": "^10.4.4",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
-        "@0x/utils": "^5.6.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/types": "^3.3.0",
+        "@0x/utils": "^6.1.0",
+        "@0x/web3-wrapper": "^7.2.8",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -90,8 +90,8 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/base-contract": "^6.2.11",
+        "@0x/contracts-test-utils": "^5.3.9",
         "@0x/typescript-typings": "^5.1.5",
         "ethereum-types": "^3.3.3"
     },

contracts/integrations/CHANGELOG.json

@@ -1,4 +1,49 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "2.7.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "2.7.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "2.7.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "2.7.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603487270,
+        "version": "2.7.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "version": "2.7.0",
         "changes": [

contracts/integrations/CHANGELOG.md

@@ -5,6 +5,26 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.7.5 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v2.7.4 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v2.7.3 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v2.7.2 - _October 27, 2020_
+
+    * Dependencies updated
+
+## v2.7.1 - _October 23, 2020_
+
+    * Dependencies updated
+
 ## v2.7.0 - _October 21, 2020_
 
     * Update curveBridge tests (#2633)

contracts/integrations/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-integrations",
-    "version": "2.7.0",
+    "version": "2.7.5",
     "engines": {
         "node": ">=6.12"
     },
@@ -51,24 +51,24 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contract-addresses": "^4.12.0",
-        "@0x/contract-wrappers": "^13.9.0",
-        "@0x/contracts-broker": "^1.1.7",
-        "@0x/contracts-coordinator": "^3.1.8",
-        "@0x/contracts-dev-utils": "^1.3.6",
-        "@0x/contracts-exchange-forwarder": "^4.2.8",
-        "@0x/contracts-exchange-libs": "^4.3.8",
-        "@0x/contracts-extensions": "^6.2.2",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contract-addresses": "^5.1.0",
+        "@0x/contract-wrappers": "^13.9.4",
+        "@0x/contracts-broker": "^1.1.11",
+        "@0x/contracts-coordinator": "^3.1.12",
+        "@0x/contracts-dev-utils": "^1.3.10",
+        "@0x/contracts-exchange-forwarder": "^4.2.12",
+        "@0x/contracts-exchange-libs": "^4.3.12",
+        "@0x/contracts-extensions": "^6.2.6",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-utils": "^4.5.6",
         "@0x/coordinator-server": "^1.0.5",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/migrations": "^6.4.1",
-        "@0x/order-utils": "^10.4.0",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/migrations": "^6.4.6",
+        "@0x/order-utils": "^10.4.4",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.2.8",
         "@azure/core-asynciterator-polyfill": "^1.0.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
@@ -91,21 +91,21 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/asset-swapper": "0xProject/gitpkg-registry#0x-asset-swapper-v4.6.0-36546480b",
-        "@0x/base-contract": "^6.2.7",
-        "@0x/contracts-asset-proxy": "^3.5.0",
-        "@0x/contracts-erc1155": "^2.1.8",
-        "@0x/contracts-erc20": "^3.2.2",
-        "@0x/contracts-erc721": "^3.1.8",
-        "@0x/contracts-exchange": "^3.2.8",
-        "@0x/contracts-multisig": "^4.1.8",
-        "@0x/contracts-staking": "^2.0.15",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/contracts-zero-ex": "^0.3.0",
-        "@0x/subproviders": "^6.1.5",
-        "@0x/types": "^3.2.4",
+        "@0x/asset-swapper": "^5.0.1",
+        "@0x/base-contract": "^6.2.11",
+        "@0x/contracts-asset-proxy": "^3.6.3",
+        "@0x/contracts-erc1155": "^2.1.12",
+        "@0x/contracts-erc20": "^3.2.6",
+        "@0x/contracts-erc721": "^3.1.12",
+        "@0x/contracts-exchange": "^3.2.12",
+        "@0x/contracts-multisig": "^4.1.12",
+        "@0x/contracts-staking": "^2.0.19",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/contracts-zero-ex": "^0.7.0",
+        "@0x/subproviders": "^6.1.9",
+        "@0x/types": "^3.3.0",
         "@0x/typescript-typings": "^5.1.5",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.1.0",
         "ethereum-types": "^3.3.3",
         "ethereumjs-util": "^6.2.0",
         "lodash": "^4.17.11"

contracts/multisig/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "4.1.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "4.1.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "4.1.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "4.1.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "4.1.8",

contracts/multisig/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.1.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v4.1.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v4.1.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v4.1.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v4.1.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/multisig/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-multisig",
-    "version": "4.1.8",
+    "version": "4.1.12",
     "engines": {
         "node": ">=6.12"
     },
@@ -49,18 +49,18 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/multisig",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-asset-proxy": "^3.5.0",
-        "@0x/contracts-erc20": "^3.2.2",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/contracts-utils": "^4.5.2",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-asset-proxy": "^3.6.3",
+        "@0x/contracts-erc20": "^3.2.6",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/contracts-utils": "^4.5.6",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
-        "@0x/utils": "^5.6.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/types": "^3.3.0",
+        "@0x/utils": "^6.1.0",
+        "@0x/web3-wrapper": "^7.2.8",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -78,7 +78,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.11",
         "@0x/typescript-typings": "^5.1.5",
         "ethereum-types": "^3.3.3"
     },

contracts/staking/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "2.0.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "2.0.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "2.0.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "2.0.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "2.0.15",

contracts/staking/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.19 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v2.0.18 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v2.0.17 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v2.0.16 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v2.0.15 - _October 21, 2020_
 
     * Dependencies updated

contracts/staking/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-staking",
-    "version": "2.0.15",
+    "version": "2.0.19",
     "engines": {
         "node": ">=6.12"
     },
@@ -53,20 +53,20 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/tokens",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-asset-proxy": "^3.5.0",
-        "@0x/contracts-dev-utils": "^1.3.6",
-        "@0x/contracts-erc20": "^3.2.2",
-        "@0x/contracts-exchange-libs": "^4.3.8",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-utils": "^4.5.2",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/order-utils": "^10.4.0",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-asset-proxy": "^3.6.3",
+        "@0x/contracts-dev-utils": "^1.3.10",
+        "@0x/contracts-erc20": "^3.2.6",
+        "@0x/contracts-exchange-libs": "^4.3.12",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-utils": "^4.5.6",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/order-utils": "^10.4.4",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/types": "^3.3.0",
+        "@0x/web3-wrapper": "^7.2.8",
         "@types/lodash": "4.14.104",
         "@types/node": "12.12.54",
         "chai": "^4.0.1",
@@ -87,10 +87,10 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/base-contract": "^6.2.11",
+        "@0x/contracts-test-utils": "^5.3.9",
         "@0x/typescript-typings": "^5.1.5",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.1.0",
         "ethereum-types": "^3.3.3",
         "ethereumjs-util": "^5.1.1"
     },

contracts/test-utils/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "5.3.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "5.3.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "5.3.7",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "5.3.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "5.3.5",

contracts/test-utils/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v5.3.9 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v5.3.8 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v5.3.7 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v5.3.6 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v5.3.5 - _October 21, 2020_
 
     * Dependencies updated

contracts/test-utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-test-utils",
-    "version": "5.3.5",
+    "version": "5.3.9",
     "engines": {
         "node": ">=6.12"
     },
@@ -34,7 +34,7 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/test-utils",
     "devDependencies": {
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/tslint-config": "^4.1.3",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
@@ -42,20 +42,20 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/assert": "^3.0.13",
-        "@0x/base-contract": "^6.2.7",
-        "@0x/contract-addresses": "^4.12.0",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/json-schemas": "^5.2.3",
-        "@0x/order-utils": "^10.4.0",
-        "@0x/sol-coverage": "^4.0.14",
-        "@0x/sol-profiler": "^4.1.4",
-        "@0x/sol-trace": "^3.0.14",
-        "@0x/subproviders": "^6.1.5",
-        "@0x/types": "^3.2.4",
+        "@0x/assert": "^3.0.17",
+        "@0x/base-contract": "^6.2.11",
+        "@0x/contract-addresses": "^5.1.0",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/json-schemas": "^5.3.3",
+        "@0x/order-utils": "^10.4.4",
+        "@0x/sol-coverage": "^4.0.18",
+        "@0x/sol-profiler": "^4.1.8",
+        "@0x/sol-trace": "^3.0.18",
+        "@0x/subproviders": "^6.1.9",
+        "@0x/types": "^3.3.0",
         "@0x/typescript-typings": "^5.1.5",
-        "@0x/utils": "^5.6.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/utils": "^6.1.0",
+        "@0x/web3-wrapper": "^7.2.8",
         "@types/bn.js": "^4.11.0",
         "@types/js-combinatorics": "^0.5.29",
         "@types/lodash": "4.14.104",

contracts/utils/CHANGELOG.json

@@ -1,4 +1,40 @@
 [
+    {
+        "timestamp": 1604376968,
+        "version": "4.5.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "4.5.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "4.5.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "4.5.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "version": "4.5.2",
         "changes": [

contracts/utils/CHANGELOG.md

@@ -5,6 +5,22 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.5.6 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v4.5.5 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v4.5.4 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v4.5.3 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v4.5.2 - _October 21, 2020_
 
     * Add Ropsten and Rinkeby addresses to `DeploymentConstants` (#2656)

contracts/utils/contracts/src/DeploymentConstants.sol

@@ -56,8 +56,6 @@ contract DeploymentConstants {
     address constant private MUSD_ADDRESS = 0xe2f2a5C287993345a840Db3B0845fbC70f5935a5;
     /// @dev Mainnet address of the Mooniswap Registry contract
     address constant private MOONISWAP_REGISTRY = 0x71CD6666064C3A1354a3B4dca5fA1E2D3ee7D303;
-    /// @dev Mainnet address of the Shell contract
-    address constant private SHELL_CONTRACT = 0x2E703D658f8dd21709a7B458967aB4081F8D3d05;
     /// @dev Mainnet address of the DODO Registry (ZOO) contract
     address constant private DODO_REGISTRY = 0x3A97247DF274a17C59A3bd12735ea3FcDFb49950;
     /// @dev Mainnet address of the DODO Helper contract
@@ -303,16 +301,6 @@ contract DeploymentConstants {
         return MOONISWAP_REGISTRY;
     }
 
-    /// @dev An overridable way to retrieve the Shell contract address.
-    /// @return registry The Shell contract address.
-    function _getShellAddress()
-        internal
-        view
-        returns (address)
-    {
-        return SHELL_CONTRACT;
-    }
-
     /// @dev An overridable way to retrieve the DODO Registry contract address.
     /// @return registry The DODO Registry contract address.
     function _getDODORegistryAddress()

contracts/utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-utils",
-    "version": "4.5.2",
+    "version": "4.5.6",
     "engines": {
         "node": ">=6.12"
     },
@@ -50,15 +50,15 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/utils",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/order-utils": "^10.4.0",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/order-utils": "^10.4.4",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/types": "^3.3.0",
+        "@0x/web3-wrapper": "^7.2.8",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
@@ -79,9 +79,9 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.11",
         "@0x/typescript-typings": "^5.1.5",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.1.0",
         "bn.js": "^4.11.8",
         "ethereum-types": "^3.3.3"
     },

contracts/zero-ex/CHANGELOG.json

@@ -1,4 +1,61 @@
 [
+    {
+        "version": "0.7.0",
+        "changes": [
+            {
+                "note": "Change `ProtocolFeeUnfunded` event in FQT",
+                "pr": 28
+            },
+            {
+                "note": "Use new PLP interface in FQT.",
+                "pr": 28
+            }
+        ],
+        "timestamp": 1604376968
+    },
+    {
+        "version": "0.6.0",
+        "changes": [
+            {
+                "note": "Add support for collecting protocol fees in ETH or WETH",
+                "pr": 2
+            },
+            {
+                "note": "Add `LibSignature` library",
+                "pr": 21
+            }
+        ],
+        "timestamp": 1604355662
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "0.5.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "0.5.0",
+        "changes": [
+            {
+                "note": "Add `Swerve`, `SnowSwap`, `DODO` and `SushiSwap` into FQT",
+                "pr": 7
+            }
+        ],
+        "timestamp": 1603833198
+    },
+    {
+        "version": "0.4.0",
+        "changes": [
+            {
+                "note": "Use the exchange proxy as the primary allowance target",
+                "pr": 3
+            }
+        ],
+        "timestamp": 1603487270
+    },
     {
         "version": "0.3.0",
         "changes": [

contracts/zero-ex/CHANGELOG.md

@@ -5,6 +5,28 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v0.7.0 - _November 3, 2020_
+
+    * Change `ProtocolFeeUnfunded` event in FQT (#28)
+    * Use new PLP interface in FQT. (#28)
+
+## v0.6.0 - _November 2, 2020_
+
+    * Add support for collecting protocol fees in ETH or WETH (#2)
+    * Add `LibSignature` library (#21)
+
+## v0.5.1 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v0.5.0 - _October 27, 2020_
+
+    * Add `Swerve`, `SnowSwap`, `DODO` and `SushiSwap` into FQT (#7)
+
+## v0.4.0 - _October 23, 2020_
+
+    * Use the exchange proxy as the primary allowance target (#3)
+
 ## v0.3.0 - _October 21, 2020_
 
     * Internal audit fixes (#2657)

contracts/zero-ex/contracts/src/errors/LibSignatureRichErrors.sol

@@ -26,7 +26,8 @@ library LibSignatureRichErrors {
         INVALID_LENGTH,
         UNSUPPORTED,
         ILLEGAL,
-        WRONG_SIGNER
+        WRONG_SIGNER,
+        BAD_SIGNATURE_DATA
     }
 
     // solhint-disable func-name-mixedcase
@@ -49,4 +50,19 @@ library LibSignatureRichErrors {
             signature
         );
     }
+
+    function SignatureValidationError(
+        SignatureValidationErrorCodes code,
+        bytes32 hash
+    )
+        internal
+        pure
+        returns (bytes memory)
+    {
+        return abi.encodeWithSelector(
+            bytes4(keccak256("SignatureValidationError(uint8,bytes32)")),
+            code,
+            hash
+        );
+    }
 }

contracts/zero-ex/contracts/src/external/FeeCollector.sol

@@ -0,0 +1,65 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+import "@0x/contracts-utils/contracts/src/v06/AuthorizableV06.sol";
+import "../vendor/v3/IStaking.sol";
+
+/// @dev The collector contract for protocol fees
+contract FeeCollector is AuthorizableV06 {
+    /// @dev Allow ether transfers to the collector.
+    receive() external payable { }
+
+    constructor() public {
+        _addAuthorizedAddress(msg.sender);
+    }
+
+    /// @dev   Approve the staking contract and join a pool. Only an authority
+    ///        can call this.
+    /// @param weth The WETH contract.
+    /// @param staking The staking contract.
+    /// @param poolId The pool ID this contract is collecting fees for.
+    function initialize(
+        IEtherTokenV06 weth,
+        IStaking staking,
+        bytes32 poolId
+    )
+        external
+        onlyAuthorized
+    {
+        weth.approve(address(staking), type(uint256).max);
+        staking.joinStakingPoolAsMaker(poolId);
+    }
+
+    /// @dev Convert all held ether to WETH. Only an authority can call this.
+    /// @param weth The WETH contract.
+    function convertToWeth(
+        IEtherTokenV06 weth
+    )
+        external
+        onlyAuthorized
+    {
+        // Leave 1 wei behind to avoid expensive zero-->non-zero state change.
+        if (address(this).balance > 1) {
+            weth.deposit{value: address(this).balance - 1}();
+        }
+    }
+}

contracts/zero-ex/contracts/src/features/LiquidityProviderFeature.sol

@@ -31,7 +31,7 @@ import "../storage/LibLiquidityProviderStorage.sol";
 import "../vendor/v3/IERC20Bridge.sol";
 import "./IFeature.sol";
 import "./ILiquidityProviderFeature.sol";
-import "./ITokenSpenderFeature.sol";
+import "./libs/LibTokenSpender.sol";
 
 
 contract LiquidityProviderFeature is
@@ -97,7 +97,7 @@ contract LiquidityProviderFeature is
             weth.deposit{value: sellAmount}();
             weth.transfer(providerAddress, sellAmount);
         } else {
-            ITokenSpenderFeature(address(this))._spendERC20Tokens(
+            LibTokenSpender.spendERC20Tokens(
                 IERC20TokenV06(takerToken),
                 msg.sender,
                 providerAddress,

contracts/zero-ex/contracts/src/features/MetaTransactionsFeature.sol

@@ -32,8 +32,8 @@ import "./libs/LibSignedCallData.sol";
 import "./IMetaTransactionsFeature.sol";
 import "./ITransformERC20Feature.sol";
 import "./ISignatureValidatorFeature.sol";
-import "./ITokenSpenderFeature.sol";
 import "./IFeature.sol";
+import "./libs/LibTokenSpender.sol";
 
 
 /// @dev MetaTransactions feature.
@@ -279,10 +279,10 @@ contract MetaTransactionsFeature is
 
         // Pay the fee to the sender.
         if (mtx.feeAmount > 0) {
-            ITokenSpenderFeature(address(this))._spendERC20Tokens(
+            LibTokenSpender.spendERC20Tokens(
                 mtx.feeToken,
-                mtx.signer, // From the signer.
-                sender, // To the sender.
+                mtx.signer,
+                sender,
                 mtx.feeAmount
             );
         }

contracts/zero-ex/contracts/src/features/TransformERC20Feature.sol

@@ -33,9 +33,9 @@ import "../transformers/IERC20Transformer.sol";
 import "../transformers/LibERC20Transformer.sol";
 import "./libs/LibSignedCallData.sol";
 import "./ITransformERC20Feature.sol";
-import "./ITokenSpenderFeature.sol";
 import "./IFeature.sol";
 import "./ISignatureValidatorFeature.sol";
+import "./libs/LibTokenSpender.sol";
 
 
 /// @dev Feature to composably transform between ERC20 tokens.
@@ -211,8 +211,10 @@ contract TransformERC20Feature is
         // If the input token amount is -1, transform the taker's entire
         // spendable balance.
         if (args.inputTokenAmount == uint256(-1)) {
-            args.inputTokenAmount = ITokenSpenderFeature(address(this))
-                .getSpendableERC20BalanceOf(args.inputToken, args.taker);
+            args.inputTokenAmount = LibTokenSpender.getSpendableERC20BalanceOf(
+                args.inputToken,
+                args.taker
+            );
         }
 
         TransformERC20PrivateState memory state;
@@ -315,12 +317,7 @@ contract TransformERC20Feature is
         // Transfer input tokens.
         if (!LibERC20Transformer.isTokenETH(inputToken)) {
             // Token is not ETH, so pull ERC20 tokens.
-            ITokenSpenderFeature(address(this))._spendERC20Tokens(
-                inputToken,
-                from,
-                to,
-                amount
-            );
+            LibTokenSpender.spendERC20Tokens(inputToken, from, to, amount);
         } else if (msg.value < amount) {
              // Token is ETH, so the caller must attach enough ETH to the call.
             LibTransformERC20RichErrors.InsufficientEthAttachedError(

contracts/zero-ex/contracts/src/features/UniswapFeature.sol

@@ -157,17 +157,49 @@ contract UniswapFeature is
                     switch eq(sellToken, ETH_TOKEN_ADDRESS_32)
                         case 0 {
                             // For the first pair we need to transfer sellTokens into the
-                            // pair contract using `AllowanceTarget.executeCall()`
-                            mstore(0xB00, ALLOWANCE_TARGET_EXECUTE_CALL_SELECTOR_32)
-                            mstore(0xB04, sellToken)
-                            mstore(0xB24, 0x40)
-                            mstore(0xB44, 0x64)
-                            mstore(0xB64, TRANSFER_FROM_CALL_SELECTOR_32)
-                            mstore(0xB68, caller())
-                            mstore(0xB88, pair)
-                            mstore(0xBA8, sellAmount)
-                            if iszero(call(gas(), mload(0xA60), 0, 0xB00, 0xC8, 0x00, 0x0)) {
-                                bubbleRevert()
+                            // pair contract.
+                            mstore(0xB00, TRANSFER_FROM_CALL_SELECTOR_32)
+                            mstore(0xB04, caller())
+                            mstore(0xB24, pair)
+                            mstore(0xB44, sellAmount)
+
+                            // Copy only the first 32 bytes of return data. We
+                            // only care about reading a boolean in the success
+                            // case, and we discard the return data in the
+                            // failure case.
+                            let success := call(gas(), sellToken, 0, 0xB00, 0x64, 0xC00, 0x20)
+
+                            let rdsize := returndatasize()
+
+                            // Check for ERC20 success. ERC20 tokens should
+                            // return a boolean, but some return nothing or
+                            // extra data. We accept 0-length return data as
+                            // success, or at least 32 bytes that starts with
+                            // a 32-byte boolean true.
+                            success := and(
+                                success,                         // call itself succeeded
+                                or(
+                                    iszero(rdsize),              // no return data, or
+                                    and(
+                                        iszero(lt(rdsize, 32)),  // at least 32 bytes
+                                        eq(mload(0xC00), 1)      // starts with uint256(1)
+                                    )
+                                )
+                            )
+
+                            if iszero(success) {
+                                // Try to fall back to the allowance target.
+                                mstore(0xB00, ALLOWANCE_TARGET_EXECUTE_CALL_SELECTOR_32)
+                                mstore(0xB04, sellToken)
+                                mstore(0xB24, 0x40)
+                                mstore(0xB44, 0x64)
+                                mstore(0xB64, TRANSFER_FROM_CALL_SELECTOR_32)
+                                mstore(0xB68, caller())
+                                mstore(0xB88, pair)
+                                mstore(0xBA8, sellAmount)
+                                if iszero(call(gas(), mload(0xA60), 0, 0xB00, 0xC8, 0x00, 0x0)) {
+                                    bubbleRevert()
+                                }
                             }
                         }
                         default {

contracts/zero-ex/contracts/src/features/libs/LibSignature.sol

@@ -0,0 +1,151 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-utils/contracts/src/v06/errors/LibRichErrorsV06.sol";
+import "../../errors/LibSignatureRichErrors.sol";
+
+
+/// @dev A library for validating signatures.
+library LibSignature {
+    using LibRichErrorsV06 for bytes;
+
+    // '\x19Ethereum Signed Message:\n32\x00\x00\x00\x00' in a word.
+    uint256 private constant ETH_SIGN_HASH_PREFIX =
+        0x19457468657265756d205369676e6564204d6573736167653a0a333200000000;
+    /// @dev Exclusive upper limit on ECDSA signatures 'R' values.
+    ///      The valid range is given by fig (282) of the yellow paper.
+    uint256 private constant ECDSA_SIGNATURE_R_LIMIT =
+        uint256(0xfffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141);
+    /// @dev Exclusive upper limit on ECDSA signatures 'S' values.
+    ///      The valid range is given by fig (283) of the yellow paper.
+    uint256 private constant ECDSA_SIGNATURE_S_LIMIT = ECDSA_SIGNATURE_R_LIMIT / 2 + 1;
+
+   /// @dev Allowed signature types.
+    enum SignatureType {
+        ILLEGAL,
+        INVALID,
+        EIP712,
+        ETHSIGN
+    }
+
+    /// @dev Encoded EC signature.
+    struct Signature {
+        // How to validate the signature.
+        SignatureType signatureType;
+        // EC Signature data.
+        uint8 v;
+        // EC Signature data.
+        bytes32 r;
+        // EC Signature data.
+        bytes32 s;
+    }
+
+    /// @dev Retrieve the signer of a signature.
+    ///      Throws if the signature can't be validated.
+    /// @param hash The hash that was signed.
+    /// @param signature The signature.
+    /// @return recovered The recovered signer address.
+    function getSignerOfHash(
+        bytes32 hash,
+        Signature memory signature
+    )
+        internal
+        pure
+        returns (address recovered)
+    {
+        // Ensure this is a signature type that can be validated against a hash.
+        _validateHashCompatibleSignature(hash, signature);
+
+        if (signature.signatureType == SignatureType.EIP712) {
+            // Signed using EIP712
+            recovered = ecrecover(
+                hash,
+                signature.v,
+                signature.r,
+                signature.s
+            );
+        } else if (signature.signatureType == SignatureType.ETHSIGN) {
+            // Signed using `eth_sign`
+            // Need to hash `hash` with "\x19Ethereum Signed Message:\n32" prefix
+            // in packed encoding.
+            bytes32 ethSignHash;
+            assembly {
+                // Use scratch space
+                mstore(0, ETH_SIGN_HASH_PREFIX) // length of 28 bytes
+                mstore(28, hash) // length of 32 bytes
+                ethSignHash := keccak256(0, 60)
+            }
+            recovered = ecrecover(
+                ethSignHash,
+                signature.v,
+                signature.r,
+                signature.s
+            );
+        }
+        // `recovered` can be null if the signature values are out of range.
+        if (recovered == address(0)) {
+            LibSignatureRichErrors.SignatureValidationError(
+                LibSignatureRichErrors.SignatureValidationErrorCodes.BAD_SIGNATURE_DATA,
+                hash
+            ).rrevert();
+        }
+    }
+
+    /// @dev Validates that a signature is compatible with a hash signee.
+    /// @param hash The hash that was signed.
+    /// @param signature The signature.
+    function _validateHashCompatibleSignature(
+        bytes32 hash,
+        Signature memory signature
+    )
+        private
+        pure
+    {
+        // Ensure the r and s are within malleability limits.
+        if (uint256(signature.r) >= ECDSA_SIGNATURE_R_LIMIT ||
+            uint256(signature.s) >= ECDSA_SIGNATURE_S_LIMIT)
+        {
+            LibSignatureRichErrors.SignatureValidationError(
+                LibSignatureRichErrors.SignatureValidationErrorCodes.BAD_SIGNATURE_DATA,
+                hash
+            ).rrevert();
+        }
+
+        // Always illegal signature.
+        if (signature.signatureType == SignatureType.ILLEGAL) {
+            LibSignatureRichErrors.SignatureValidationError(
+                LibSignatureRichErrors.SignatureValidationErrorCodes.ILLEGAL,
+                hash
+            ).rrevert();
+        }
+
+        // Always invalid.
+        if (signature.signatureType == SignatureType.INVALID) {
+            LibSignatureRichErrors.SignatureValidationError(
+                LibSignatureRichErrors.SignatureValidationErrorCodes.ALWAYS_INVALID,
+                hash
+            ).rrevert();
+        }
+
+        // Solidity should check that the signature type is within enum range for us
+        // when abi-decoding.
+    }
+}

contracts/zero-ex/contracts/src/features/libs/LibTokenSpender.sol

@@ -0,0 +1,131 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
+import "@0x/contracts-utils/contracts/src/v06/LibSafeMathV06.sol";
+import "../../errors/LibSpenderRichErrors.sol";
+import "../ITokenSpenderFeature.sol";
+
+library LibTokenSpender {
+    using LibRichErrorsV06 for bytes;
+
+    // Mask of the lower 20 bytes of a bytes32.
+    uint256 constant private ADDRESS_MASK = 0x000000000000000000000000ffffffffffffffffffffffffffffffffffffffff;
+
+    /// @dev Transfers ERC20 tokens from `owner` to `to`.
+    /// @param token The token to spend.
+    /// @param owner The owner of the tokens.
+    /// @param to The recipient of the tokens.
+    /// @param amount The amount of `token` to transfer.
+    function spendERC20Tokens(
+        IERC20TokenV06 token,
+        address owner,
+        address to,
+        uint256 amount
+    )
+        internal
+    {
+        bool success;
+        bytes memory revertData;
+
+        require(address(token) != address(this), "LibTokenSpender/CANNOT_INVOKE_SELF");
+
+        assembly {
+            let ptr := mload(0x40) // free memory pointer
+
+            // selector for transferFrom(address,address,uint256)
+            mstore(ptr, 0x23b872dd00000000000000000000000000000000000000000000000000000000)
+            mstore(add(ptr, 0x04), and(owner, ADDRESS_MASK))
+            mstore(add(ptr, 0x24), and(to, ADDRESS_MASK))
+            mstore(add(ptr, 0x44), amount)
+
+            success := call(gas(), and(token, ADDRESS_MASK), 0, ptr, 0x64, 0, 0)
+
+            let rdsize := returndatasize()
+
+            returndatacopy(add(ptr, 0x20), 0, rdsize) // reuse memory
+
+            // Check for ERC20 success. ERC20 tokens should return a boolean,
+            // but some don't. We accept 0-length return data as success, or at
+            // least 32 bytes that starts with a 32-byte boolean true.
+            success := and(
+                success,                             // call itself succeeded
+                or(
+                    iszero(rdsize),                  // no return data, or
+                    and(
+                        iszero(lt(rdsize, 32)),      // at least 32 bytes
+                        eq(mload(add(ptr, 0x20)), 1) // starts with uint256(1)
+                    )
+                )
+            )
+
+            if iszero(success) {
+                // revertData is a bytes, so length-prefixed data
+                mstore(ptr, rdsize)
+                revertData := ptr
+
+                // update free memory pointer (ptr + 32-byte length + return data)
+                mstore(0x40, add(add(ptr, 0x20), rdsize))
+            }
+        }
+
+        if (!success) {
+            // Try the old AllowanceTarget.
+            try ITokenSpenderFeature(address(this))._spendERC20Tokens(
+                    token,
+                    owner,
+                    to,
+                    amount
+                ) {
+            } catch {
+                // Bubble up the first error message. (In general, the fallback to the
+                // allowance target is opportunistic. We ignore the specific error
+                // message if it fails.)
+                LibSpenderRichErrors.SpenderERC20TransferFromFailedError(
+                    address(token),
+                    owner,
+                    to,
+                    amount,
+                    revertData
+                ).rrevert();
+            }
+        }
+    }
+
+    /// @dev Gets the maximum amount of an ERC20 token `token` that can be
+    ///      pulled from `owner` by this address.
+    /// @param token The token to spend.
+    /// @param owner The owner of the tokens.
+    /// @return amount The amount of tokens that can be pulled.
+    function getSpendableERC20BalanceOf(
+        IERC20TokenV06 token,
+        address owner
+    )
+        internal
+        view
+        returns (uint256)
+    {
+        return LibSafeMathV06.min256(
+            token.allowance(owner, address(this)),
+            token.balanceOf(owner)
+        );
+    }
+}

contracts/zero-ex/contracts/src/fixins/FixinProtocolFees.sol

@@ -0,0 +1,114 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+import "../external/FeeCollector.sol";
+import "../features/libs/LibTokenSpender.sol";
+
+/// @dev Helpers for collecting protocol fees.
+abstract contract FixinProtocolFees {
+    bytes32 immutable feeCollectorCodeHash;
+
+    constructor() internal {
+        feeCollectorCodeHash = keccak256(type(FeeCollector).creationCode);
+    }
+
+    /// @dev   Collect the specified protocol fee in either WETH or ETH. If
+    ///        msg.value is non-zero, the fee will be paid in ETH. Otherwise,
+    ///        this function attempts to transfer the fee in WETH. Either way,
+    ///        The fee is stored in a per-pool fee collector contract.
+    /// @param poolId The pool ID for which a fee is being collected.
+    /// @param amount The amount of ETH/WETH to be collected.
+    /// @param weth The WETH token contract.
+    function _collectProtocolFee(
+        bytes32 poolId,
+        uint256 amount,
+        IERC20TokenV06 weth
+    )
+        internal
+    {
+        FeeCollector feeCollector = _getFeeCollector(poolId);
+
+        if (msg.value == 0) {
+            // WETH
+            LibTokenSpender.spendERC20Tokens(weth, msg.sender, address(feeCollector), amount);
+        } else {
+            // ETH
+            (bool success,) = address(feeCollector).call{value: amount}("");
+            require(success, "FixinProtocolFees/ETHER_TRANSFER_FALIED");
+        }
+    }
+
+    /// @dev Transfer fees for a given pool to the staking contract.
+    /// @param poolId Identifies the pool whose fees are being paid.
+    function _transferFeesForPool(
+        bytes32 poolId,
+        IStaking staking,
+        IEtherTokenV06 weth
+    )
+        internal
+    {
+        FeeCollector feeCollector = _getFeeCollector(poolId);
+
+        uint256 codeSize;
+        assembly {
+            codeSize := extcodesize(feeCollector)
+        }
+
+        if (codeSize == 0) {
+            // Create and initialize the contract if necessary.
+            new FeeCollector{salt: poolId}();
+            feeCollector.initialize(weth, staking, poolId);
+        }
+
+        if (address(feeCollector).balance > 1) {
+            feeCollector.convertToWeth(weth);
+        }
+
+        uint256 bal = weth.balanceOf(address(feeCollector));
+        if (bal > 1) {
+            // Leave 1 wei behind to avoid high SSTORE cost of zero-->non-zero.
+            staking.payProtocolFee(
+                address(feeCollector),
+                address(feeCollector),
+                bal - 1);
+        }
+    }
+
+    /// @dev Compute the CREATE2 address for a fee collector.
+    /// @param poolId The fee collector's pool ID.
+    function _getFeeCollector(
+        bytes32 poolId
+    )
+        internal
+        view
+        returns (FeeCollector)
+    {
+        // Compute the CREATE2 address for the fee collector.
+        address payable addr = address(uint256(keccak256(abi.encodePacked(
+            byte(0xff),
+            address(this),
+            poolId, // pool ID is salt
+            feeCollectorCodeHash
+        ))));
+        return FeeCollector(addr);
+    }
+}

contracts/zero-ex/contracts/src/transformers/FillQuoteTransformer.sol

@@ -27,6 +27,7 @@ import "@0x/contracts-utils/contracts/src/v06/LibSafeMathV06.sol";
 import "@0x/contracts-utils/contracts/src/v06/LibMathV06.sol";
 import "../errors/LibTransformERC20RichErrors.sol";
 import "../vendor/v3/IExchange.sol";
+import "../vendor/v3/LibOrderHash.sol";
 import "./bridges/IBridgeAdapter.sol";
 import "./Transformer.sol";
 import "./LibERC20Transformer.sol";
@@ -104,13 +105,8 @@ contract FillQuoteTransformer is
 
     /// @dev Emitted when a trade is skipped due to a lack of funds
     ///      to pay the 0x Protocol fee.
-    /// @param ethBalance The current eth balance.
-    /// @param ethNeeded The current eth balance required to pay
-    ///        the protocol fee.
-    event ProtocolFeeUnfunded(
-        uint256 ethBalance,
-        uint256 ethNeeded
-    );
+    /// @param orderHash The hash of the order that was skipped.
+    event ProtocolFeeUnfunded(bytes32 orderHash);
 
     /// @dev The Exchange ERC20Proxy ID.
     bytes4 private constant ERC20_ASSET_PROXY_ID = 0xf47261b0;
@@ -450,7 +446,11 @@ contract FillQuoteTransformer is
             }
             // Emit an event if we do not have sufficient ETH to cover the protocol fee.
             if (state.ethRemaining < state.protocolFee) {
-                emit ProtocolFeeUnfunded(state.ethRemaining, state.protocolFee);
+                bytes32 orderHash = LibOrderHash.getTypedDataHash(
+                    order,
+                    exchange.EIP712_EXCHANGE_DOMAIN_HASH()
+                );
+                emit ProtocolFeeUnfunded(orderHash);
                 return results;
             }
             try

contracts/zero-ex/contracts/src/transformers/bridges/BridgeAdapter.sol

@@ -22,11 +22,13 @@ pragma experimental ABIEncoderV2;
 import "./mixins/MixinAdapterAddresses.sol";
 import "./mixins/MixinBalancer.sol";
 import "./mixins/MixinCurve.sol";
+import "./mixins/MixinDodo.sol";
 import "./mixins/MixinKyber.sol";
 import "./mixins/MixinMooniswap.sol";
 import "./mixins/MixinMStable.sol";
 import "./mixins/MixinOasis.sol";
 import "./mixins/MixinShell.sol";
+import "./mixins/MixinSushiswap.sol";
 import "./mixins/MixinUniswap.sol";
 import "./mixins/MixinUniswapV2.sol";
 import "./mixins/MixinZeroExBridge.sol";
@@ -35,11 +37,13 @@ contract BridgeAdapter is
     MixinAdapterAddresses,
     MixinBalancer,
     MixinCurve,
+    MixinDodo,
     MixinKyber,
     MixinMooniswap,
     MixinMStable,
     MixinOasis,
     MixinShell,
+    MixinSushiswap,
     MixinUniswap,
     MixinUniswapV2,
     MixinZeroExBridge
@@ -48,39 +52,29 @@ contract BridgeAdapter is
     address private immutable BALANCER_BRIDGE_ADDRESS;
     address private immutable CREAM_BRIDGE_ADDRESS;
     address private immutable CURVE_BRIDGE_ADDRESS;
+    address private immutable DODO_BRIDGE_ADDRESS;
     address private immutable KYBER_BRIDGE_ADDRESS;
     address private immutable MOONISWAP_BRIDGE_ADDRESS;
     address private immutable MSTABLE_BRIDGE_ADDRESS;
     address private immutable OASIS_BRIDGE_ADDRESS;
     address private immutable SHELL_BRIDGE_ADDRESS;
+    address private immutable SNOW_SWAP_BRIDGE_ADDRESS;
+    address private immutable SUSHISWAP_BRIDGE_ADDRESS;
+    address private immutable SWERVE_BRIDGE_ADDRESS;
     address private immutable UNISWAP_BRIDGE_ADDRESS;
     address private immutable UNISWAP_V2_BRIDGE_ADDRESS;
 
-    /// @dev Emitted when a trade occurs.
-    /// @param inputToken The token the bridge is converting from.
-    /// @param outputToken The token the bridge is converting to.
-    /// @param inputTokenAmount Amount of input token.
-    /// @param outputTokenAmount Amount of output token.
-    /// @param from The bridge address, indicating the underlying source of the fill.
-    /// @param to The `to` address, currrently `address(this)`
-    event ERC20BridgeTransfer(
-        IERC20TokenV06 inputToken,
-        IERC20TokenV06 outputToken,
-        uint256 inputTokenAmount,
-        uint256 outputTokenAmount,
-        address from,
-        address to
-    );
-
     constructor(AdapterAddresses memory addresses)
         public
         MixinBalancer()
         MixinCurve()
+        MixinDodo(addresses)
         MixinKyber(addresses)
         MixinMooniswap(addresses)
         MixinMStable(addresses)
         MixinOasis(addresses)
-        MixinShell(addresses)
+        MixinShell()
+        MixinSushiswap(addresses)
         MixinUniswap(addresses)
         MixinUniswapV2(addresses)
         MixinZeroExBridge()
@@ -92,9 +86,13 @@ contract BridgeAdapter is
         MSTABLE_BRIDGE_ADDRESS = addresses.mStableBridge;
         OASIS_BRIDGE_ADDRESS = addresses.oasisBridge;
         SHELL_BRIDGE_ADDRESS = addresses.shellBridge;
+        SUSHISWAP_BRIDGE_ADDRESS = addresses.sushiswapBridge;
+        SWERVE_BRIDGE_ADDRESS = addresses.swerveBridge;
         UNISWAP_BRIDGE_ADDRESS = addresses.uniswapBridge;
         UNISWAP_V2_BRIDGE_ADDRESS = addresses.uniswapV2Bridge;
         CREAM_BRIDGE_ADDRESS = addresses.creamBridge;
+        SNOW_SWAP_BRIDGE_ADDRESS = addresses.snowSwapBridge;
+        DODO_BRIDGE_ADDRESS = addresses.dodoBridge;
     }
 
     function trade(
@@ -118,12 +116,20 @@ contract BridgeAdapter is
             "BridgeAdapter/INVALID_BRIDGE_ADDRESS"
         );
 
-        if (bridgeAddress == CURVE_BRIDGE_ADDRESS) {
+        if (bridgeAddress == CURVE_BRIDGE_ADDRESS ||
+            bridgeAddress == SWERVE_BRIDGE_ADDRESS ||
+            bridgeAddress == SNOW_SWAP_BRIDGE_ADDRESS) {
             boughtAmount = _tradeCurve(
                 buyToken,
                 sellAmount,
                 bridgeData
             );
+        } else if (bridgeAddress == SUSHISWAP_BRIDGE_ADDRESS) {
+            boughtAmount = _tradeSushiswap(
+                buyToken,
+                sellAmount,
+                bridgeData
+            );
         } else if (bridgeAddress == UNISWAP_V2_BRIDGE_ADDRESS) {
             boughtAmount = _tradeUniswapV2(
                 buyToken,
@@ -136,7 +142,8 @@ contract BridgeAdapter is
                 sellAmount,
                 bridgeData
             );
-        } else if (bridgeAddress == BALANCER_BRIDGE_ADDRESS  || bridgeAddress == CREAM_BRIDGE_ADDRESS) {
+        } else if (bridgeAddress == BALANCER_BRIDGE_ADDRESS ||
+                   bridgeAddress == CREAM_BRIDGE_ADDRESS) {
             boughtAmount = _tradeBalancer(
                 buyToken,
                 sellAmount,
@@ -172,6 +179,12 @@ contract BridgeAdapter is
                 sellAmount,
                 bridgeData
             );
+        } else if (bridgeAddress == DODO_BRIDGE_ADDRESS) {
+            boughtAmount = _tradeDodo(
+                buyToken,
+                sellAmount,
+                bridgeData
+            );
         } else {
             boughtAmount = _tradeZeroExBridge(
                 bridgeAddress,
@@ -180,7 +193,8 @@ contract BridgeAdapter is
                 sellAmount,
                 bridgeData
             );
-            // Do not emit an event. The bridge contract should emit one itself.
+            // Old bridge contracts should emit an `ERC20BridgeTransfer` themselves,
+            // otherwise an event will be emitted from `_tradeZeroExBridge`.
             return boughtAmount;
         }
 

contracts/zero-ex/contracts/src/transformers/bridges/mixins/MixinAdapterAddresses.sol

@@ -26,20 +26,25 @@ contract MixinAdapterAddresses
         address balancerBridge;
         address creamBridge;
         address curveBridge;
+        address dodoBridge;
         address kyberBridge;
         address mooniswapBridge;
         address mStableBridge;
         address oasisBridge;
         address shellBridge;
+        address snowSwapBridge;
+        address swerveBridge;
+        address sushiswapBridge;
         address uniswapBridge;
         address uniswapV2Bridge;
         // Exchanges
         address kyberNetworkProxy;
         address oasis;
+        address sushiswapRouter;
         address uniswapV2Router;
         address uniswapExchangeFactory;
         address mStable;
-        address shell;
+        address dodoHelper;
         // Other
         address weth;
     }

contracts/zero-ex/contracts/src/transformers/bridges/mixins/MixinDodo.sol

@@ -0,0 +1,97 @@
+
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/v06/LibERC20TokenV06.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
+import "./MixinAdapterAddresses.sol";
+
+interface IDODOHelper {
+
+    function querySellQuoteToken(address dodo, uint256 amount) external view returns (uint256);
+}
+
+
+interface IDODO {
+
+    function sellBaseToken(uint256 amount, uint256 minReceiveQuote, bytes calldata data) external returns (uint256);
+
+    function buyBaseToken(uint256 amount, uint256 maxPayQuote, bytes calldata data) external returns (uint256);
+
+}
+
+
+contract MixinDodo is
+    MixinAdapterAddresses
+{
+    using LibERC20TokenV06 for IERC20TokenV06;
+
+    /// @dev Mainnet address of the `DOODO Helper` contract.
+    IDODOHelper private immutable DODO_HELPER;
+
+    constructor(AdapterAddresses memory addresses)
+        public
+    {
+        DODO_HELPER = IDODOHelper(addresses.dodoHelper);
+    }
+
+    function _tradeDodo(
+        IERC20TokenV06 /* buyToken */,
+        uint256 sellAmount,
+        bytes memory bridgeData
+    )
+        internal
+        returns (uint256 boughtAmount)
+    {
+        (address fromTokenAddress,
+         address pool,
+         bool isSellBase) = abi.decode(bridgeData, (address, address, bool));
+
+        // Grant the Dodo pool contract an allowance to sell the first token.
+        IERC20TokenV06(fromTokenAddress).approveIfBelow(pool, sellAmount);
+
+        if (isSellBase) {
+            // Sell the Base token directly against the contract
+            boughtAmount = IDODO(pool).sellBaseToken(
+                // amount to sell
+                sellAmount,
+                // min receive amount
+                1,
+                new bytes(0)
+            );
+        } else {
+            // Need to re-calculate the sell quote amount into buyBase
+            boughtAmount = DODO_HELPER.querySellQuoteToken(
+                pool,
+                sellAmount
+            );
+            IDODO(pool).buyBaseToken(
+                // amount to buy
+                boughtAmount,
+                // max pay amount
+                sellAmount,
+                new bytes(0)
+            );
+        }
+
+        return boughtAmount;
+    }
+}

contracts/zero-ex/contracts/src/transformers/bridges/mixins/MixinShell.sol

@@ -37,22 +37,11 @@ interface IShell {
         returns (uint256 toAmount);
 }
 
-
-
 contract MixinShell is
     MixinAdapterAddresses
 {
     using LibERC20TokenV06 for IERC20TokenV06;
 
-    /// @dev Mainnet address of the `Shell` contract.
-    IShell private immutable SHELL;
-
-    constructor(AdapterAddresses memory addresses)
-        public
-    {
-        SHELL = IShell(addresses.shell);
-    }
-
     function _tradeShell(
         IERC20TokenV06 buyToken,
         uint256 sellAmount,
@@ -61,15 +50,15 @@ contract MixinShell is
         internal
         returns (uint256 boughtAmount)
     {
-        (address fromTokenAddress) = abi.decode(bridgeData, (address));
+        (address fromTokenAddress, address pool) = abi.decode(bridgeData, (address, address));
 
         // Grant the Shell contract an allowance to sell the first token.
         IERC20TokenV06(fromTokenAddress).approveIfBelow(
-            address(SHELL),
+            pool,
             sellAmount
         );
 
-        uint256 buyAmount = SHELL.originSwap(
+        boughtAmount = IShell(pool).originSwap(
             fromTokenAddress,
             address(buyToken),
              // Sell all tokens we hold.
@@ -79,6 +68,6 @@ contract MixinShell is
             // deadline
             block.timestamp + 1
         );
-        return buyAmount;
+        return boughtAmount;
     }
 }

contracts/zero-ex/contracts/src/transformers/bridges/mixins/MixinSushiswap.sol

@@ -0,0 +1,79 @@
+
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/v06/LibERC20TokenV06.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
+import "./MixinAdapterAddresses.sol";
+import "./MixinUniswapV2.sol";
+
+contract MixinSushiswap is
+    MixinAdapterAddresses
+{
+    using LibERC20TokenV06 for IERC20TokenV06;
+
+    /// @dev Mainnet address of the `SushiswapRouter` contract.
+    IUniswapV2Router02 private immutable SUSHISWAP_ROUTER;
+
+    constructor(AdapterAddresses memory addresses)
+        public
+    {
+        SUSHISWAP_ROUTER = IUniswapV2Router02(addresses.sushiswapRouter);
+    }
+
+    function _tradeSushiswap(
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bytes memory bridgeData
+    )
+        internal
+        returns (uint256 boughtAmount)
+    {
+        // solhint-disable indent
+        address[] memory path = abi.decode(bridgeData, (address[]));
+        // solhint-enable indent
+
+        require(path.length >= 2, "SushiswapBridge/PATH_LENGTH_MUST_BE_AT_LEAST_TWO");
+        require(
+            path[path.length - 1] == address(buyToken),
+            "SushiswapBridge/LAST_ELEMENT_OF_PATH_MUST_MATCH_OUTPUT_TOKEN"
+        );
+        // Grant the Uniswap router an allowance to sell the first token.
+        IERC20TokenV06(path[0]).approveIfBelow(
+            address(SUSHISWAP_ROUTER),
+            sellAmount
+        );
+
+        uint[] memory amounts = SUSHISWAP_ROUTER.swapExactTokensForTokens(
+             // Sell all tokens we hold.
+            sellAmount,
+             // Minimum buy amount.
+            1,
+            // Convert to `buyToken` along this path.
+            path,
+            // Recipient is `this`.
+            address(this),
+            // Expires after this block.
+            block.timestamp
+        );
+        return amounts[amounts.length-1];
+    }
+}

contracts/zero-ex/contracts/src/transformers/bridges/mixins/MixinZeroExBridge.sol

@@ -21,32 +21,31 @@ pragma solidity ^0.6.5;
 import "@0x/contracts-erc20/contracts/src/v06/LibERC20TokenV06.sol";
 import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
 import "@0x/contracts-utils/contracts/src/v06/LibSafeMathV06.sol";
+import "../../../vendor/ILiquidityProvider.sol";
+import "../../../vendor/v3/IERC20Bridge.sol";
 
-interface IERC20Bridge {
-
-    /// @dev Transfers `amount` of the ERC20 `buyToken` from `from` to `to`.
-    /// @param buyToken The address of the ERC20 token to transfer.
-    /// @param from Address to transfer asset from.
-    /// @param to Address to transfer asset to.
-    /// @param amount Amount of asset to transfer.
-    /// @param bridgeData Arbitrary asset data needed by the bridge contract.
-    /// @return success The magic bytes `0xdc1600f3` if successful.
-    function bridgeTransferFrom(
-        IERC20TokenV06 buyToken,
-        address from,
-        address to,
-        uint256 amount,
-        bytes calldata bridgeData
-    )
-        external
-        returns (bytes4 success);
-}
 
 contract MixinZeroExBridge {
 
     using LibERC20TokenV06 for IERC20TokenV06;
     using LibSafeMathV06 for uint256;
 
+    /// @dev Emitted when a trade occurs.
+    /// @param inputToken The token the bridge is converting from.
+    /// @param outputToken The token the bridge is converting to.
+    /// @param inputTokenAmount Amount of input token.
+    /// @param outputTokenAmount Amount of output token.
+    /// @param from The bridge address, indicating the underlying source of the fill.
+    /// @param to The `to` address, currrently `address(this)`
+    event ERC20BridgeTransfer(
+        IERC20TokenV06 inputToken,
+        IERC20TokenV06 outputToken,
+        uint256 inputTokenAmount,
+        uint256 outputTokenAmount,
+        address from,
+        address to
+    );
+
     function _tradeZeroExBridge(
         address bridgeAddress,
         IERC20TokenV06 sellToken,
@@ -63,13 +62,31 @@ contract MixinZeroExBridge {
             bridgeAddress,
             sellAmount
         );
-        IERC20Bridge(bridgeAddress).bridgeTransferFrom(
-            buyToken,
-            address(bridgeAddress),
-            address(this),
-            1, // amount to transfer back from the bridge
-            bridgeData
-        );
-        boughtAmount = buyToken.balanceOf(address(this)).safeSub(balanceBefore);
+        try ILiquidityProvider(bridgeAddress).sellTokenForToken(
+                address(sellToken),
+                address(buyToken),
+                address(this), // recipient
+                1, // minBuyAmount
+                bridgeData
+        ) {
+            boughtAmount = buyToken.balanceOf(address(this)).safeSub(balanceBefore);
+            emit ERC20BridgeTransfer(
+                sellToken,
+                buyToken,
+                sellAmount,
+                boughtAmount,
+                bridgeAddress,
+                address(this)
+            );
+        } catch {
+            IERC20Bridge(bridgeAddress).bridgeTransferFrom(
+                address(buyToken),
+                bridgeAddress,
+                address(this), // recipient
+                1, // minBuyAmount
+                bridgeData
+            );
+            boughtAmount = buyToken.balanceOf(address(this)).safeSub(balanceBefore);
+        }
     }
 }

contracts/zero-ex/contracts/src/vendor/ILiquidityProvider.sol

@@ -0,0 +1,92 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+
+interface ILiquidityProvider {
+
+    /// @dev Trades `inputToken` for `outputToken`. The amount of `inputToken`
+    ///      to sell must be transferred to the contract prior to calling this
+    ///      function to trigger the trade.
+    /// @param inputToken The token being sold.
+    /// @param outputToken The token being bought.
+    /// @param recipient The recipient of the bought tokens.
+    /// @param minBuyAmount The minimum acceptable amount of `outputToken` to buy.
+    /// @param auxiliaryData Arbitrary auxiliary data supplied to the contract.
+    /// @return boughtAmount The amount of `outputToken` bought.
+    function sellTokenForToken(
+        address inputToken,
+        address outputToken,
+        address recipient,
+        uint256 minBuyAmount,
+        bytes calldata auxiliaryData
+    )
+        external
+        returns (uint256 boughtAmount);
+
+    /// @dev Trades ETH for token. ETH must either be attached to this function
+    ///      call or sent to the contract prior to calling this function to
+    ///      trigger the trade.
+    /// @param outputToken The token being bought.
+    /// @param recipient The recipient of the bought tokens.
+    /// @param minBuyAmount The minimum acceptable amount of `outputToken` to buy.
+    /// @param auxiliaryData Arbitrary auxiliary data supplied to the contract.
+    /// @return boughtAmount The amount of `outputToken` bought.
+    function sellEthForToken(
+        address outputToken,
+        address recipient,
+        uint256 minBuyAmount,
+        bytes calldata auxiliaryData
+    )
+        external
+        payable
+        returns (uint256 boughtAmount);
+
+    /// @dev Trades token for ETH. The token must be sent to the contract prior
+    ///      to calling this function to trigger the trade.
+    /// @param inputToken The token being sold.
+    /// @param recipient The recipient of the bought tokens.
+    /// @param minBuyAmount The minimum acceptable amount of ETH to buy.
+    /// @param auxiliaryData Arbitrary auxiliary data supplied to the contract.
+    /// @return boughtAmount The amount of ETH bought.
+    function sellTokenForEth(
+        address inputToken,
+        address payable recipient,
+        uint256 minBuyAmount,
+        bytes calldata auxiliaryData
+    )
+        external
+        returns (uint256 boughtAmount);
+
+    /// @dev Quotes the amount of `outputToken` that would be obtained by
+    ///      selling `sellAmount` of `inputToken`.
+    /// @param inputToken Address of the taker token (what to sell). Use
+    ///        the wETH address if selling ETH.
+    /// @param outputToken Address of the maker token (what to buy). Use
+    ///        the wETH address if buying ETH.
+    /// @param sellAmount Amount of `inputToken` to sell.
+    /// @return outputTokenAmount Amount of `outputToken` that would be obtained.
+    function getSellQuote(
+        address inputToken,
+        address outputToken,
+        uint256 sellAmount
+    )
+        external
+        view
+        returns (uint256 outputTokenAmount);
+}

contracts/zero-ex/contracts/src/vendor/v3/IExchange.sol

@@ -104,4 +104,9 @@ interface IExchange {
         external
         view
         returns (address proxyAddress);
+
+    function EIP712_EXCHANGE_DOMAIN_HASH()
+        external
+        view
+        returns (bytes32 domainHash);
 }

contracts/zero-ex/contracts/src/vendor/v3/IStaking.sol

@@ -0,0 +1,24 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+
+interface IStaking {
+    function joinStakingPoolAsMaker(bytes32) external;
+    function payProtocolFee(address, address, uint256) external payable;
+}

contracts/zero-ex/contracts/src/vendor/v3/LibOrderHash.sol

@@ -0,0 +1,167 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+
+import "./IExchange.sol";
+
+
+library LibOrderHash {
+
+    using LibOrderHash for IExchange.Order;
+
+    // Hash for the EIP712 Order Schema:
+    // keccak256(abi.encodePacked(
+    //     "Order(",
+    //     "address makerAddress,",
+    //     "address takerAddress,",
+    //     "address feeRecipientAddress,",
+    //     "address senderAddress,",
+    //     "uint256 makerAssetAmount,",
+    //     "uint256 takerAssetAmount,",
+    //     "uint256 makerFee,",
+    //     "uint256 takerFee,",
+    //     "uint256 expirationTimeSeconds,",
+    //     "uint256 salt,",
+    //     "bytes makerAssetData,",
+    //     "bytes takerAssetData,",
+    //     "bytes makerFeeAssetData,",
+    //     "bytes takerFeeAssetData",
+    //     ")"
+    // ))
+    bytes32 constant internal _EIP712_ORDER_SCHEMA_HASH =
+        0xf80322eb8376aafb64eadf8f0d7623f22130fd9491a221e902b713cb984a7534;
+
+    /// @dev Calculates the EIP712 typed data hash of an order with a given domain separator.
+    /// @param order The order structure.
+    /// @param eip712ExchangeDomainHash Domain hash for the Exchange.
+    /// @return orderHash EIP712 typed data hash of the order.
+    function getTypedDataHash(IExchange.Order memory order, bytes32 eip712ExchangeDomainHash)
+        internal
+        pure
+        returns (bytes32 orderHash)
+    {
+        orderHash = _hashEIP712Message(
+            eip712ExchangeDomainHash,
+            order.getStructHash()
+        );
+        return orderHash;
+    }
+
+    /// @dev Calculates EIP712 hash of the order struct.
+    /// @param order The order structure.
+    /// @return result EIP712 hash of the order struct.
+    function getStructHash(IExchange.Order memory order)
+        internal
+        pure
+        returns (bytes32 result)
+    {
+        bytes32 schemaHash = _EIP712_ORDER_SCHEMA_HASH;
+        bytes memory makerAssetData = order.makerAssetData;
+        bytes memory takerAssetData = order.takerAssetData;
+        bytes memory makerFeeAssetData = order.makerFeeAssetData;
+        bytes memory takerFeeAssetData = order.takerFeeAssetData;
+
+        // Assembly for more efficiently computing:
+        // keccak256(abi.encodePacked(
+        //     EIP712_ORDER_SCHEMA_HASH,
+        //     uint256(order.makerAddress),
+        //     uint256(order.takerAddress),
+        //     uint256(order.feeRecipientAddress),
+        //     uint256(order.senderAddress),
+        //     order.makerAssetAmount,
+        //     order.takerAssetAmount,
+        //     order.makerFee,
+        //     order.takerFee,
+        //     order.expirationTimeSeconds,
+        //     order.salt,
+        //     keccak256(order.makerAssetData),
+        //     keccak256(order.takerAssetData),
+        //     keccak256(order.makerFeeAssetData),
+        //     keccak256(order.takerFeeAssetData)
+        // ));
+
+        assembly {
+            // Assert order offset (this is an internal error that should never be triggered)
+            if lt(order, 32) {
+                invalid()
+            }
+
+            // Calculate memory addresses that will be swapped out before hashing
+            let pos1 := sub(order, 32)
+            let pos2 := add(order, 320)
+            let pos3 := add(order, 352)
+            let pos4 := add(order, 384)
+            let pos5 := add(order, 416)
+
+            // Backup
+            let temp1 := mload(pos1)
+            let temp2 := mload(pos2)
+            let temp3 := mload(pos3)
+            let temp4 := mload(pos4)
+            let temp5 := mload(pos5)
+
+            // Hash in place
+            mstore(pos1, schemaHash)
+            mstore(pos2, keccak256(add(makerAssetData, 32), mload(makerAssetData)))        // store hash of makerAssetData
+            mstore(pos3, keccak256(add(takerAssetData, 32), mload(takerAssetData)))        // store hash of takerAssetData
+            mstore(pos4, keccak256(add(makerFeeAssetData, 32), mload(makerFeeAssetData)))  // store hash of makerFeeAssetData
+            mstore(pos5, keccak256(add(takerFeeAssetData, 32), mload(takerFeeAssetData)))  // store hash of takerFeeAssetData
+            result := keccak256(pos1, 480)
+
+            // Restore
+            mstore(pos1, temp1)
+            mstore(pos2, temp2)
+            mstore(pos3, temp3)
+            mstore(pos4, temp4)
+            mstore(pos5, temp5)
+        }
+        return result;
+    }
+
+    /// @dev Calculates EIP712 encoding for a hash struct with a given domain hash.
+    /// @param eip712DomainHash Hash of the domain domain separator data, computed
+    ///                         with getDomainHash().
+    /// @param hashStruct The EIP712 hash struct.
+    /// @return result EIP712 hash applied to the given EIP712 Domain.
+    function _hashEIP712Message(bytes32 eip712DomainHash, bytes32 hashStruct)
+        internal
+        pure
+        returns (bytes32 result)
+    {
+        // Assembly for more efficient computing:
+        // keccak256(abi.encodePacked(
+        //     EIP191_HEADER,
+        //     EIP712_DOMAIN_HASH,
+        //     hashStruct
+        // ));
+
+        assembly {
+            // Load free memory pointer
+            let memPtr := mload(64)
+
+            mstore(memPtr, 0x1901000000000000000000000000000000000000000000000000000000000000)  // EIP191 header
+            mstore(add(memPtr, 2), eip712DomainHash)                                            // EIP712 domain hash
+            mstore(add(memPtr, 34), hashStruct)                                                 // Hash of struct
+
+            // Compute hash
+            result := keccak256(memPtr, 66)
+        }
+        return result;
+    }
+}

contracts/zero-ex/contracts/test/TestFillQuoteTransformerExchange.sol

@@ -35,6 +35,8 @@ contract TestFillQuoteTransformerExchange {
         uint256 makerAssetMintRatio;
     }
 
+    bytes32 public constant EIP712_EXCHANGE_DOMAIN_HASH = 0xaa81d881b1adbbf115e15b849cb9cdc643cad3c6a90f30eb505954af943247e6;
+
     uint256 private constant PROTOCOL_FEE_MULTIPLIER = 1337;
 
     using LibSafeMathV06 for uint256;

contracts/zero-ex/contracts/test/TestLibSignature.sol

@@ -0,0 +1,34 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+pragma experimental ABIEncoderV2;
+
+import "../src/features/libs/LibSignature.sol";
+
+
+contract TestLibSignature {
+
+    function getSignerOfHash(bytes32 hash, LibSignature.Signature calldata signature)
+        external
+        pure
+        returns (address signer)
+    {
+        return LibSignature.getSignerOfHash(hash, signature);
+    }
+}

contracts/zero-ex/contracts/test/TestLibTokenSpender.sol

@@ -0,0 +1,72 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
+
+import "../src/features/libs/LibTokenSpender.sol";
+
+contract TestLibTokenSpender {
+    uint256 constant private TRIGGER_FALLBACK_SUCCESS_AMOUNT = 1340;
+
+    function spendERC20Tokens(
+        IERC20TokenV06 token,
+        address owner,
+        address to,
+        uint256 amount
+    )
+        external
+    {
+        LibTokenSpender.spendERC20Tokens(token, owner, to, amount);
+    }
+
+    event FallbackCalled(
+        address token,
+        address owner,
+        address to,
+        uint256 amount
+    );
+
+    // This is called as a fallback when the original transferFrom() fails.
+    function _spendERC20Tokens(
+        IERC20TokenV06 token,
+        address owner,
+        address to,
+        uint256 amount
+    )
+        external
+    {
+        require(amount == TRIGGER_FALLBACK_SUCCESS_AMOUNT,
+            "TokenSpenderFallback/FAILURE_AMOUNT");
+
+        emit FallbackCalled(address(token), owner, to, amount);
+    }
+
+    function getSpendableERC20BalanceOf(
+        IERC20TokenV06 token,
+        address owner
+    )
+        external
+        view
+        returns (uint256)
+    {
+        return LibTokenSpender.getSpendableERC20BalanceOf(token, owner);
+    }
+}

contracts/zero-ex/contracts/test/TestProtocolFees.sol

@@ -0,0 +1,55 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+pragma experimental ABIEncoderV2;
+
+import "../src/fixins/FixinProtocolFees.sol";
+
+contract TestProtocolFees is FixinProtocolFees {
+    function collectProtocolFee(
+        bytes32 poolId,
+        uint256 amount,
+        IERC20TokenV06 weth
+    )
+        external
+        payable
+    {
+        _collectProtocolFee(poolId, amount, weth);
+    }
+
+    function transferFeesForPool(
+        bytes32 poolId,
+        IStaking staking,
+        IEtherTokenV06 weth
+    )
+        external
+    {
+        _transferFeesForPool(poolId, staking, weth);
+    }
+
+    function getFeeCollector(
+        bytes32 poolId
+    )
+        external
+        view
+        returns (FeeCollector)
+    {
+        return _getFeeCollector(poolId);
+    }
+}

contracts/zero-ex/contracts/test/TestStaking.sol

@@ -0,0 +1,49 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+
+contract TestStaking {
+    mapping(address => bytes32) public poolForMaker;
+    mapping(bytes32 => uint256) public balanceForPool;
+
+    IEtherTokenV06 immutable weth;
+
+    constructor(IEtherTokenV06 _weth) public {
+        weth = _weth;
+    }
+
+    function joinStakingPoolAsMaker(bytes32 poolId) external {
+        poolForMaker[msg.sender] = poolId;
+    }
+
+    function payProtocolFee(
+        address makerAddress,
+        address payerAddress,
+        uint256 amount
+    )
+        external
+        payable
+    {
+        require(weth.transferFrom(payerAddress, address(this), amount));
+        balanceForPool[poolForMaker[makerAddress]] += amount;
+    }
+}

contracts/zero-ex/contracts/test/TestTokenSpenderERC20Token.sol

@@ -37,6 +37,9 @@ contract TestTokenSpenderERC20Token is
     uint256 constant private EMPTY_RETURN_AMOUNT = 1337;
     uint256 constant private FALSE_RETURN_AMOUNT = 1338;
     uint256 constant private REVERT_RETURN_AMOUNT = 1339;
+    uint256 constant private TRIGGER_FALLBACK_SUCCESS_AMOUNT = 1340;
+    uint256 constant private EXTRA_RETURN_TRUE_AMOUNT = 1341;
+    uint256 constant private EXTRA_RETURN_FALSE_AMOUNT = 1342;
 
     function transferFrom(address from, address to, uint256 amount)
         public
@@ -53,6 +56,19 @@ contract TestTokenSpenderERC20Token is
         if (amount == REVERT_RETURN_AMOUNT) {
             revert("TestTokenSpenderERC20Token/Revert");
         }
+        if (amount == TRIGGER_FALLBACK_SUCCESS_AMOUNT) {
+            return false;
+        }
+        if (amount == EXTRA_RETURN_TRUE_AMOUNT
+            || amount == EXTRA_RETURN_FALSE_AMOUNT) {
+            bool ret = amount == EXTRA_RETURN_TRUE_AMOUNT;
+
+            assembly {
+                mstore(0x00, ret)
+                mstore(0x20, amount) // just something extra to return
+                return(0, 0x40)
+            }
+        }
         return true;
     }
 

contracts/zero-ex/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-zero-ex",
-    "version": "0.3.0",
+    "version": "0.7.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -10,8 +10,9 @@
         "test": "test"
     },
     "scripts": {
-        "build": "yarn pre_build && tsc -b",
+        "build": "yarn pre_build && yarn build:ts",
         "build:ci": "yarn build",
+        "build:ts": "tsc -b",
         "pre_build": "run-s compile contracts:gen generate_contract_wrappers contracts:copy",
         "test": "yarn run_mocha",
         "rebuild_and_test": "run-s build test",
@@ -41,7 +42,7 @@
     "config": {
         "publicInterfaceContracts": "IZeroEx,ZeroEx,FullMigration,InitialMigration,IFlashWallet,IAllowanceTarget,IERC20Transformer,IOwnableFeature,ISimpleFunctionRegistryFeature,ITokenSpenderFeature,ITransformERC20Feature,FillQuoteTransformer,PayTakerTransformer,WethTransformer,OwnableFeature,SimpleFunctionRegistryFeature,TransformERC20Feature,TokenSpenderFeature,AffiliateFeeTransformer,SignatureValidatorFeature,MetaTransactionsFeature,LogMetadataTransformer,BridgeAdapter,LiquidityProviderFeature",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually.",
-        "abis": "./test/generated-artifacts/@(AffiliateFeeTransformer|AllowanceTarget|BootstrapFeature|BridgeAdapter|FillQuoteTransformer|FixinCommon|FixinEIP712|FixinReentrancyGuard|FlashWallet|FullMigration|IAllowanceTarget|IBootstrapFeature|IBridgeAdapter|IERC20Bridge|IERC20Transformer|IExchange|IFeature|IFlashWallet|IGasToken|ILiquidityProviderFeature|IMetaTransactionsFeature|IOwnableFeature|ISignatureValidatorFeature|ISimpleFunctionRegistryFeature|ITestSimpleFunctionRegistryFeature|ITokenSpenderFeature|ITransformERC20Feature|IUniswapFeature|IZeroEx|InitialMigration|LibBootstrap|LibCommonRichErrors|LibERC20Transformer|LibLiquidityProviderRichErrors|LibLiquidityProviderStorage|LibMetaTransactionsRichErrors|LibMetaTransactionsStorage|LibMigrate|LibOwnableRichErrors|LibOwnableStorage|LibProxyRichErrors|LibProxyStorage|LibReentrancyGuardStorage|LibSignatureRichErrors|LibSignedCallData|LibSimpleFunctionRegistryRichErrors|LibSimpleFunctionRegistryStorage|LibSpenderRichErrors|LibStorage|LibTokenSpenderStorage|LibTransformERC20RichErrors|LibTransformERC20Storage|LibWalletRichErrors|LiquidityProviderFeature|LogMetadataTransformer|MetaTransactionsFeature|MixinAdapterAddresses|MixinBalancer|MixinCurve|MixinKyber|MixinMStable|MixinMooniswap|MixinOasis|MixinShell|MixinUniswap|MixinUniswapV2|MixinZeroExBridge|OwnableFeature|PayTakerTransformer|SignatureValidatorFeature|SimpleFunctionRegistryFeature|TestBridge|TestCallTarget|TestDelegateCaller|TestFillQuoteTransformerBridge|TestFillQuoteTransformerExchange|TestFillQuoteTransformerHost|TestFullMigration|TestInitialMigration|TestMetaTransactionsTransformERC20Feature|TestMigrator|TestMintTokenERC20Transformer|TestMintableERC20Token|TestSimpleFunctionRegistryFeatureImpl1|TestSimpleFunctionRegistryFeatureImpl2|TestTokenSpender|TestTokenSpenderERC20Token|TestTransformERC20|TestTransformerBase|TestTransformerDeployerTransformer|TestTransformerHost|TestWeth|TestWethTransformerHost|TestZeroExFeature|TokenSpenderFeature|TransformERC20Feature|Transformer|TransformerDeployer|UniswapFeature|WethTransformer|ZeroEx).json"
+        "abis": "./test/generated-artifacts/@(AffiliateFeeTransformer|AllowanceTarget|BootstrapFeature|BridgeAdapter|FeeCollector|FillQuoteTransformer|FixinCommon|FixinEIP712|FixinProtocolFees|FixinReentrancyGuard|FlashWallet|FullMigration|IAllowanceTarget|IBootstrapFeature|IBridgeAdapter|IERC20Bridge|IERC20Transformer|IExchange|IFeature|IFlashWallet|IGasToken|ILiquidityProvider|ILiquidityProviderFeature|IMetaTransactionsFeature|IOwnableFeature|ISignatureValidatorFeature|ISimpleFunctionRegistryFeature|IStaking|ITestSimpleFunctionRegistryFeature|ITokenSpenderFeature|ITransformERC20Feature|IUniswapFeature|IZeroEx|InitialMigration|LibBootstrap|LibCommonRichErrors|LibERC20Transformer|LibLiquidityProviderRichErrors|LibLiquidityProviderStorage|LibMetaTransactionsRichErrors|LibMetaTransactionsStorage|LibMigrate|LibOrderHash|LibOwnableRichErrors|LibOwnableStorage|LibProxyRichErrors|LibProxyStorage|LibReentrancyGuardStorage|LibSignature|LibSignatureRichErrors|LibSignedCallData|LibSimpleFunctionRegistryRichErrors|LibSimpleFunctionRegistryStorage|LibSpenderRichErrors|LibStorage|LibTokenSpender|LibTokenSpenderStorage|LibTransformERC20RichErrors|LibTransformERC20Storage|LibWalletRichErrors|LiquidityProviderFeature|LogMetadataTransformer|MetaTransactionsFeature|MixinAdapterAddresses|MixinBalancer|MixinCurve|MixinDodo|MixinKyber|MixinMStable|MixinMooniswap|MixinOasis|MixinShell|MixinSushiswap|MixinUniswap|MixinUniswapV2|MixinZeroExBridge|OwnableFeature|PayTakerTransformer|SignatureValidatorFeature|SimpleFunctionRegistryFeature|TestBridge|TestCallTarget|TestDelegateCaller|TestFillQuoteTransformerBridge|TestFillQuoteTransformerExchange|TestFillQuoteTransformerHost|TestFullMigration|TestInitialMigration|TestLibSignature|TestLibTokenSpender|TestMetaTransactionsTransformERC20Feature|TestMigrator|TestMintTokenERC20Transformer|TestMintableERC20Token|TestProtocolFees|TestSimpleFunctionRegistryFeatureImpl1|TestSimpleFunctionRegistryFeatureImpl2|TestStaking|TestTokenSpender|TestTokenSpenderERC20Token|TestTransformERC20|TestTransformerBase|TestTransformerDeployerTransformer|TestTransformerHost|TestWeth|TestWethTransformerHost|TestZeroExFeature|TokenSpenderFeature|TransformERC20Feature|Transformer|TransformerDeployer|UniswapFeature|WethTransformer|ZeroEx).json"
     },
     "repository": {
         "type": "git",
@@ -53,13 +54,12 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/zero-ex",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
-        "@0x/contracts-erc20": "^3.2.2",
-        "@0x/contracts-gen": "2.0.13",
-        "@0x/contracts-test-utils": "^5.3.5",
-        "@0x/dev-utils": "^3.3.4",
-        "@0x/order-utils": "^10.4.0",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/abi-gen": "^5.4.7",
+        "@0x/contracts-erc20": "^3.2.6",
+        "@0x/contracts-gen": "2.0.18",
+        "@0x/contracts-test-utils": "^5.3.9",
+        "@0x/dev-utils": "^4.0.1",
+        "@0x/sol-compiler": "^4.2.7",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
         "@types/lodash": "4.14.104",
@@ -75,12 +75,13 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
-        "@0x/subproviders": "^6.1.5",
-        "@0x/types": "^3.2.4",
+        "@0x/base-contract": "^6.2.11",
+        "@0x/order-utils": "^10.4.4",
+        "@0x/subproviders": "^6.1.9",
+        "@0x/types": "^3.3.0",
         "@0x/typescript-typings": "^5.1.5",
-        "@0x/utils": "^5.6.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/utils": "^6.1.0",
+        "@0x/web3-wrapper": "^7.2.8",
         "ethereum-types": "^3.3.3",
         "ethereumjs-util": "^5.1.1"
     },

contracts/zero-ex/src/index.ts

@@ -32,6 +32,7 @@ export { artifacts } from './artifacts';
 export * from './migration';
 export * from './nonce_utils';
 export * from './signed_call_data';
+export * from './signature_utils';
 export {
     AffiliateFeeTransformerContract,
     BridgeAdapterContract,
@@ -48,3 +49,6 @@ export {
     WethTransformerContract,
     ZeroExContract,
 } from './wrappers';
+export * from './revert_errors';
+export { EIP712TypedData } from '@0x/types';
+export { SupportedProvider } from '@0x/subproviders';

contracts/zero-ex/src/revert_errors.ts

@@ -0,0 +1,30 @@
+// TODO(dorothy-zbornak): Move these into `@0x/protocol-utils` whenever that
+// becomes a thing.
+// tslint:disable:max-classes-per-file
+import { RevertError } from '@0x/utils';
+
+export enum SignatureValidationErrorCodes {
+    AlwaysInvalid = 0,
+    InvalidLength = 1,
+    Unsupported = 2,
+    Illegal = 3,
+    WrongSigner = 4,
+    BadSignatureData = 5,
+}
+
+// tslint:disable:max-classes-per-file
+export class SignatureValidationError extends RevertError {
+    constructor(code?: SignatureValidationErrorCodes, hash?: string) {
+        super('SignatureValidationError', 'SignatureValidationError(uint8 code, bytes32 hash)', {
+            code,
+            hash,
+        });
+    }
+}
+
+const types = [SignatureValidationError];
+
+// Register the types we've defined.
+for (const type of types) {
+    RevertError.registerType(type);
+}

contracts/zero-ex/src/signature_utils.ts

@@ -0,0 +1,113 @@
+import { signatureUtils } from '@0x/order-utils';
+import { SupportedProvider } from '@0x/subproviders';
+import { EIP712TypedData } from '@0x/types';
+import { hexUtils, signTypedDataUtils } from '@0x/utils';
+import * as ethjs from 'ethereumjs-util';
+
+/**
+ * Valid signature types on the Exchange Proxy.
+ */
+export enum SignatureType {
+    Illegal = 0,
+    Invalid = 1,
+    EIP712 = 2,
+    EthSign = 3,
+}
+
+/**
+ * Represents a raw EC signature.
+ */
+export interface ECSignature {
+    v: number;
+    r: string;
+    s: string;
+}
+
+/**
+ * A complete signature on the Exchange Proxy.
+ */
+export interface Signature extends ECSignature {
+    signatureType: SignatureType;
+}
+
+/**
+ * Sign a hash with the EthSign signature type on a provider.
+ */
+export async function ethSignHashFromProviderAsync(
+    signer: string,
+    hash: string,
+    provider: SupportedProvider,
+): Promise<Signature> {
+    const signatureBytes = await signatureUtils.ecSignHashAsync(provider, hash, signer);
+    const parsed = parsePackedSignatureBytes(signatureBytes);
+    assertSignatureType(parsed, SignatureType.EthSign);
+    return parsed;
+}
+
+/**
+ * Sign a hash with the EthSign signature type, given a private key.
+ */
+export function ethSignHashWithKey(hash: string, key: string): Signature {
+    const ethHash = hexUtils.toHex(
+        ethjs.sha3(hexUtils.concat(ethjs.toBuffer('\x19Ethereum Signed Message:\n32'), hash)),
+    );
+    return {
+        ...ecSignHashWithKey(ethHash, key),
+        signatureType: SignatureType.EthSign,
+    };
+}
+
+/**
+ * Sign a typed data object with the EIP712 signature type, given a private key.
+ */
+export function eip712SignTypedDataWithKey(typedData: EIP712TypedData, key: string): Signature {
+    const hash = hexUtils.toHex(signTypedDataUtils.generateTypedDataHash(typedData));
+    return {
+        ...ecSignHashWithKey(hash, key),
+        signatureType: SignatureType.EIP712,
+    };
+}
+
+/**
+ * Sign an EIP712 hash with the EIP712 signature type, given a private key.
+ */
+export function eip712SignHashWithKey(hash: string, key: string): Signature {
+    return {
+        ...ecSignHashWithKey(hash, key),
+        signatureType: SignatureType.EIP712,
+    };
+}
+
+/**
+ * Generate the EC signature for a hash given a private key.
+ */
+export function ecSignHashWithKey(hash: string, key: string): ECSignature {
+    const { v, r, s } = ethjs.ecsign(ethjs.toBuffer(hash), ethjs.toBuffer(key));
+    return {
+        v,
+        r: ethjs.bufferToHex(r),
+        s: ethjs.bufferToHex(s),
+    };
+}
+
+function assertSignatureType(signature: Signature, expectedType: SignatureType): void {
+    if (signature.signatureType !== expectedType) {
+        throw new Error(`Expected signature type to be ${expectedType} but received ${signature.signatureType}.`);
+    }
+}
+
+function parsePackedSignatureBytes(signatureBytes: string): Signature {
+    if (hexUtils.size(signatureBytes) !== 66) {
+        throw new Error(`Expected packed signatureBytes to be 66 bytes long: ${signatureBytes}`);
+    }
+    const typeId = parseInt(signatureBytes.slice(-2), 16) as SignatureType;
+    if (!Object.values(SignatureType).includes(typeId)) {
+        throw new Error(`Invalid signatureBytes type ID detected: ${typeId}`);
+    }
+    return {
+        signatureType: typeId,
+        v: parseInt(signatureBytes.slice(2, 4), 16),
+        r: hexUtils.slice(signatureBytes, 1, 33),
+        s: hexUtils.slice(signatureBytes, 33),
+    };
+}

contracts/zero-ex/test/artifacts.ts

@@ -9,9 +9,11 @@ import * as AffiliateFeeTransformer from '../test/generated-artifacts/AffiliateF
 import * as AllowanceTarget from '../test/generated-artifacts/AllowanceTarget.json';
 import * as BootstrapFeature from '../test/generated-artifacts/BootstrapFeature.json';
 import * as BridgeAdapter from '../test/generated-artifacts/BridgeAdapter.json';
+import * as FeeCollector from '../test/generated-artifacts/FeeCollector.json';
 import * as FillQuoteTransformer from '../test/generated-artifacts/FillQuoteTransformer.json';
 import * as FixinCommon from '../test/generated-artifacts/FixinCommon.json';
 import * as FixinEIP712 from '../test/generated-artifacts/FixinEIP712.json';
+import * as FixinProtocolFees from '../test/generated-artifacts/FixinProtocolFees.json';
 import * as FixinReentrancyGuard from '../test/generated-artifacts/FixinReentrancyGuard.json';
 import * as FlashWallet from '../test/generated-artifacts/FlashWallet.json';
 import * as FullMigration from '../test/generated-artifacts/FullMigration.json';
@@ -24,12 +26,14 @@ import * as IExchange from '../test/generated-artifacts/IExchange.json';
 import * as IFeature from '../test/generated-artifacts/IFeature.json';
 import * as IFlashWallet from '../test/generated-artifacts/IFlashWallet.json';
 import * as IGasToken from '../test/generated-artifacts/IGasToken.json';
+import * as ILiquidityProvider from '../test/generated-artifacts/ILiquidityProvider.json';
 import * as ILiquidityProviderFeature from '../test/generated-artifacts/ILiquidityProviderFeature.json';
 import * as IMetaTransactionsFeature from '../test/generated-artifacts/IMetaTransactionsFeature.json';
 import * as InitialMigration from '../test/generated-artifacts/InitialMigration.json';
 import * as IOwnableFeature from '../test/generated-artifacts/IOwnableFeature.json';
 import * as ISignatureValidatorFeature from '../test/generated-artifacts/ISignatureValidatorFeature.json';
 import * as ISimpleFunctionRegistryFeature from '../test/generated-artifacts/ISimpleFunctionRegistryFeature.json';
+import * as IStaking from '../test/generated-artifacts/IStaking.json';
 import * as ITestSimpleFunctionRegistryFeature from '../test/generated-artifacts/ITestSimpleFunctionRegistryFeature.json';
 import * as ITokenSpenderFeature from '../test/generated-artifacts/ITokenSpenderFeature.json';
 import * as ITransformERC20Feature from '../test/generated-artifacts/ITransformERC20Feature.json';
@@ -43,17 +47,20 @@ import * as LibLiquidityProviderStorage from '../test/generated-artifacts/LibLiq
 import * as LibMetaTransactionsRichErrors from '../test/generated-artifacts/LibMetaTransactionsRichErrors.json';
 import * as LibMetaTransactionsStorage from '../test/generated-artifacts/LibMetaTransactionsStorage.json';
 import * as LibMigrate from '../test/generated-artifacts/LibMigrate.json';
+import * as LibOrderHash from '../test/generated-artifacts/LibOrderHash.json';
 import * as LibOwnableRichErrors from '../test/generated-artifacts/LibOwnableRichErrors.json';
 import * as LibOwnableStorage from '../test/generated-artifacts/LibOwnableStorage.json';
 import * as LibProxyRichErrors from '../test/generated-artifacts/LibProxyRichErrors.json';
 import * as LibProxyStorage from '../test/generated-artifacts/LibProxyStorage.json';
 import * as LibReentrancyGuardStorage from '../test/generated-artifacts/LibReentrancyGuardStorage.json';
+import * as LibSignature from '../test/generated-artifacts/LibSignature.json';
 import * as LibSignatureRichErrors from '../test/generated-artifacts/LibSignatureRichErrors.json';
 import * as LibSignedCallData from '../test/generated-artifacts/LibSignedCallData.json';
 import * as LibSimpleFunctionRegistryRichErrors from '../test/generated-artifacts/LibSimpleFunctionRegistryRichErrors.json';
 import * as LibSimpleFunctionRegistryStorage from '../test/generated-artifacts/LibSimpleFunctionRegistryStorage.json';
 import * as LibSpenderRichErrors from '../test/generated-artifacts/LibSpenderRichErrors.json';
 import * as LibStorage from '../test/generated-artifacts/LibStorage.json';
+import * as LibTokenSpender from '../test/generated-artifacts/LibTokenSpender.json';
 import * as LibTokenSpenderStorage from '../test/generated-artifacts/LibTokenSpenderStorage.json';
 import * as LibTransformERC20RichErrors from '../test/generated-artifacts/LibTransformERC20RichErrors.json';
 import * as LibTransformERC20Storage from '../test/generated-artifacts/LibTransformERC20Storage.json';
@@ -64,11 +71,13 @@ import * as MetaTransactionsFeature from '../test/generated-artifacts/MetaTransa
 import * as MixinAdapterAddresses from '../test/generated-artifacts/MixinAdapterAddresses.json';
 import * as MixinBalancer from '../test/generated-artifacts/MixinBalancer.json';
 import * as MixinCurve from '../test/generated-artifacts/MixinCurve.json';
+import * as MixinDodo from '../test/generated-artifacts/MixinDodo.json';
 import * as MixinKyber from '../test/generated-artifacts/MixinKyber.json';
 import * as MixinMooniswap from '../test/generated-artifacts/MixinMooniswap.json';
 import * as MixinMStable from '../test/generated-artifacts/MixinMStable.json';
 import * as MixinOasis from '../test/generated-artifacts/MixinOasis.json';
 import * as MixinShell from '../test/generated-artifacts/MixinShell.json';
+import * as MixinSushiswap from '../test/generated-artifacts/MixinSushiswap.json';
 import * as MixinUniswap from '../test/generated-artifacts/MixinUniswap.json';
 import * as MixinUniswapV2 from '../test/generated-artifacts/MixinUniswapV2.json';
 import * as MixinZeroExBridge from '../test/generated-artifacts/MixinZeroExBridge.json';
@@ -84,12 +93,16 @@ import * as TestFillQuoteTransformerExchange from '../test/generated-artifacts/T
 import * as TestFillQuoteTransformerHost from '../test/generated-artifacts/TestFillQuoteTransformerHost.json';
 import * as TestFullMigration from '../test/generated-artifacts/TestFullMigration.json';
 import * as TestInitialMigration from '../test/generated-artifacts/TestInitialMigration.json';
+import * as TestLibSignature from '../test/generated-artifacts/TestLibSignature.json';
+import * as TestLibTokenSpender from '../test/generated-artifacts/TestLibTokenSpender.json';
 import * as TestMetaTransactionsTransformERC20Feature from '../test/generated-artifacts/TestMetaTransactionsTransformERC20Feature.json';
 import * as TestMigrator from '../test/generated-artifacts/TestMigrator.json';
 import * as TestMintableERC20Token from '../test/generated-artifacts/TestMintableERC20Token.json';
 import * as TestMintTokenERC20Transformer from '../test/generated-artifacts/TestMintTokenERC20Transformer.json';
+import * as TestProtocolFees from '../test/generated-artifacts/TestProtocolFees.json';
 import * as TestSimpleFunctionRegistryFeatureImpl1 from '../test/generated-artifacts/TestSimpleFunctionRegistryFeatureImpl1.json';
 import * as TestSimpleFunctionRegistryFeatureImpl2 from '../test/generated-artifacts/TestSimpleFunctionRegistryFeatureImpl2.json';
+import * as TestStaking from '../test/generated-artifacts/TestStaking.json';
 import * as TestTokenSpender from '../test/generated-artifacts/TestTokenSpender.json';
 import * as TestTokenSpenderERC20Token from '../test/generated-artifacts/TestTokenSpenderERC20Token.json';
 import * as TestTransformerBase from '../test/generated-artifacts/TestTransformerBase.json';
@@ -120,6 +133,7 @@ export const artifacts = {
     LibTransformERC20RichErrors: LibTransformERC20RichErrors as ContractArtifact,
     LibWalletRichErrors: LibWalletRichErrors as ContractArtifact,
     AllowanceTarget: AllowanceTarget as ContractArtifact,
+    FeeCollector: FeeCollector as ContractArtifact,
     FlashWallet: FlashWallet as ContractArtifact,
     IAllowanceTarget: IAllowanceTarget as ContractArtifact,
     IFlashWallet: IFlashWallet as ContractArtifact,
@@ -143,9 +157,12 @@ export const artifacts = {
     TokenSpenderFeature: TokenSpenderFeature as ContractArtifact,
     TransformERC20Feature: TransformERC20Feature as ContractArtifact,
     UniswapFeature: UniswapFeature as ContractArtifact,
+    LibSignature: LibSignature as ContractArtifact,
     LibSignedCallData: LibSignedCallData as ContractArtifact,
+    LibTokenSpender: LibTokenSpender as ContractArtifact,
     FixinCommon: FixinCommon as ContractArtifact,
     FixinEIP712: FixinEIP712 as ContractArtifact,
+    FixinProtocolFees: FixinProtocolFees as ContractArtifact,
     FixinReentrancyGuard: FixinReentrancyGuard as ContractArtifact,
     FullMigration: FullMigration as ContractArtifact,
     InitialMigration: InitialMigration as ContractArtifact,
@@ -173,17 +190,22 @@ export const artifacts = {
     MixinAdapterAddresses: MixinAdapterAddresses as ContractArtifact,
     MixinBalancer: MixinBalancer as ContractArtifact,
     MixinCurve: MixinCurve as ContractArtifact,
+    MixinDodo: MixinDodo as ContractArtifact,
     MixinKyber: MixinKyber as ContractArtifact,
     MixinMStable: MixinMStable as ContractArtifact,
     MixinMooniswap: MixinMooniswap as ContractArtifact,
     MixinOasis: MixinOasis as ContractArtifact,
     MixinShell: MixinShell as ContractArtifact,
+    MixinSushiswap: MixinSushiswap as ContractArtifact,
     MixinUniswap: MixinUniswap as ContractArtifact,
     MixinUniswapV2: MixinUniswapV2 as ContractArtifact,
     MixinZeroExBridge: MixinZeroExBridge as ContractArtifact,
+    ILiquidityProvider: ILiquidityProvider as ContractArtifact,
     IERC20Bridge: IERC20Bridge as ContractArtifact,
     IExchange: IExchange as ContractArtifact,
     IGasToken: IGasToken as ContractArtifact,
+    IStaking: IStaking as ContractArtifact,
+    LibOrderHash: LibOrderHash as ContractArtifact,
     ITestSimpleFunctionRegistryFeature: ITestSimpleFunctionRegistryFeature as ContractArtifact,
     TestBridge: TestBridge as ContractArtifact,
     TestCallTarget: TestCallTarget as ContractArtifact,
@@ -193,12 +215,16 @@ export const artifacts = {
     TestFillQuoteTransformerHost: TestFillQuoteTransformerHost as ContractArtifact,
     TestFullMigration: TestFullMigration as ContractArtifact,
     TestInitialMigration: TestInitialMigration as ContractArtifact,
+    TestLibSignature: TestLibSignature as ContractArtifact,
+    TestLibTokenSpender: TestLibTokenSpender as ContractArtifact,
     TestMetaTransactionsTransformERC20Feature: TestMetaTransactionsTransformERC20Feature as ContractArtifact,
     TestMigrator: TestMigrator as ContractArtifact,
     TestMintTokenERC20Transformer: TestMintTokenERC20Transformer as ContractArtifact,
     TestMintableERC20Token: TestMintableERC20Token as ContractArtifact,
+    TestProtocolFees: TestProtocolFees as ContractArtifact,
     TestSimpleFunctionRegistryFeatureImpl1: TestSimpleFunctionRegistryFeatureImpl1 as ContractArtifact,
     TestSimpleFunctionRegistryFeatureImpl2: TestSimpleFunctionRegistryFeatureImpl2 as ContractArtifact,
+    TestStaking: TestStaking as ContractArtifact,
     TestTokenSpender: TestTokenSpender as ContractArtifact,
     TestTokenSpenderERC20Token: TestTokenSpenderERC20Token as ContractArtifact,
     TestTransformERC20: TestTransformERC20 as ContractArtifact,

contracts/zero-ex/test/features/liquidity_provider_test.ts

@@ -2,12 +2,7 @@ import { artifacts as erc20Artifacts, DummyERC20TokenContract } from '@0x/contra
 import { blockchainTests, constants, expect, randomAddress, verifyEventsFromLogs } from '@0x/contracts-test-utils';
 import { BigNumber, OwnableRevertErrors, ZeroExRevertErrors } from '@0x/utils';
 
-import {
-    IOwnableFeatureContract,
-    IZeroExContract,
-    LiquidityProviderFeatureContract,
-    TokenSpenderFeatureContract,
-} from '../../src/wrappers';
+import { IOwnableFeatureContract, IZeroExContract, LiquidityProviderFeatureContract } from '../../src/wrappers';
 import { artifacts } from '../artifacts';
 import { abis } from '../utils/abis';
 import { fullMigrateAsync } from '../utils/migration';
@@ -23,16 +18,7 @@ blockchainTests('LiquidityProvider feature', env => {
 
     before(async () => {
         [owner, taker] = await env.getAccountAddressesAsync();
-        zeroEx = await fullMigrateAsync(owner, env.provider, env.txDefaults, {
-            tokenSpender: (await TokenSpenderFeatureContract.deployFrom0xArtifactAsync(
-                artifacts.TestTokenSpender,
-                env.provider,
-                env.txDefaults,
-                artifacts,
-            )).address,
-        });
-        const tokenSpender = new TokenSpenderFeatureContract(zeroEx.address, env.provider, env.txDefaults, abis);
-        const allowanceTarget = await tokenSpender.getAllowanceTarget().callAsync();
+        zeroEx = await fullMigrateAsync(owner, env.provider, env.txDefaults, {});
 
         token = await DummyERC20TokenContract.deployFrom0xArtifactAsync(
             erc20Artifacts.DummyERC20Token,
@@ -52,7 +38,7 @@ blockchainTests('LiquidityProvider feature', env => {
             artifacts,
         );
         await token
-            .approve(allowanceTarget, constants.INITIAL_ERC20_ALLOWANCE)
+            .approve(zeroEx.address, constants.INITIAL_ERC20_ALLOWANCE)
             .awaitTransactionSuccessAsync({ from: taker });
 
         feature = new LiquidityProviderFeatureContract(zeroEx.address, env.provider, env.txDefaults, abis);

contracts/zero-ex/test/features/meta_transactions_test.ts

@@ -17,7 +17,6 @@ import { artifacts } from '../artifacts';
 import { abis } from '../utils/abis';
 import { fullMigrateAsync } from '../utils/migration';
 import {
-    ITokenSpenderFeatureContract,
     TestMetaTransactionsTransformERC20FeatureContract,
     TestMetaTransactionsTransformERC20FeatureEvents,
     TestMintableERC20TokenContract,
@@ -33,7 +32,6 @@ blockchainTests.resets('MetaTransactions feature', env => {
     let feature: MetaTransactionsFeatureContract;
     let feeToken: TestMintableERC20TokenContract;
     let transformERC20Feature: TestMetaTransactionsTransformERC20FeatureContract;
-    let allowanceTarget: string;
 
     const MAX_FEE_AMOUNT = new BigNumber('1e18');
     const TRANSFORM_ERC20_FAILING_VALUE = new BigNumber(666);
@@ -64,14 +62,11 @@ blockchainTests.resets('MetaTransactions feature', env => {
             env.txDefaults,
             {},
         );
-        allowanceTarget = await new ITokenSpenderFeatureContract(zeroEx.address, env.provider, env.txDefaults)
-            .getAllowanceTarget()
-            .callAsync();
         // Fund signers with fee tokens.
         await Promise.all(
             signers.map(async signer => {
                 await feeToken.mint(signer, MAX_FEE_AMOUNT).awaitTransactionSuccessAsync();
-                await feeToken.approve(allowanceTarget, MAX_FEE_AMOUNT).awaitTransactionSuccessAsync({ from: signer });
+                await feeToken.approve(zeroEx.address, MAX_FEE_AMOUNT).awaitTransactionSuccessAsync({ from: signer });
             }),
         );
     });

contracts/zero-ex/test/features/transform_erc20_test.ts

@@ -20,7 +20,6 @@ import { abis } from '../utils/abis';
 import { fullMigrateAsync } from '../utils/migration';
 import {
     FlashWalletContract,
-    ITokenSpenderFeatureContract,
     TestMintableERC20TokenContract,
     TestMintTokenERC20TransformerContract,
     TestMintTokenERC20TransformerEvents,
@@ -42,7 +41,6 @@ blockchainTests.resets('TransformERC20 feature', env => {
     let zeroEx: IZeroExContract;
     let feature: TransformERC20FeatureContract;
     let wallet: FlashWalletContract;
-    let allowanceTarget: string;
 
     before(async () => {
         [owner, taker, sender, transformerDeployer] = await env.getAccountAddressesAsync();
@@ -67,9 +65,6 @@ blockchainTests.resets('TransformERC20 feature', env => {
             abis,
         );
         wallet = new FlashWalletContract(await feature.getTransformWallet().callAsync(), env.provider, env.txDefaults);
-        allowanceTarget = await new ITokenSpenderFeatureContract(zeroEx.address, env.provider, env.txDefaults)
-            .getAllowanceTarget()
-            .callAsync();
         await feature.setQuoteSigner(callDataSigner).awaitTransactionSuccessAsync({ from: owner });
     });
 
@@ -173,7 +168,7 @@ blockchainTests.resets('TransformERC20 feature', env => {
                 },
                 artifacts,
             );
-            await inputToken.approve(allowanceTarget, MAX_UINT256).awaitTransactionSuccessAsync({ from: taker });
+            await inputToken.approve(zeroEx.address, MAX_UINT256).awaitTransactionSuccessAsync({ from: taker });
         });
 
         interface Transformation {

contracts/zero-ex/test/lib_signature_test.ts

@@ -0,0 +1,98 @@
+import { blockchainTests, expect } from '@0x/contracts-test-utils';
+import { hexUtils } from '@0x/utils';
+import * as ethjs from 'ethereumjs-util';
+
+import { SignatureValidationError, SignatureValidationErrorCodes } from '../src/revert_errors';
+import { eip712SignHashWithKey, ethSignHashWithKey, SignatureType } from '../src/signature_utils';
+
+import { artifacts } from './artifacts';
+import { TestLibSignatureContract } from './wrappers';
+
+const EMPTY_REVERT = 'reverted with no data';
+
+blockchainTests.resets('LibSignature library', env => {
+    let testLib: TestLibSignatureContract;
+    let signerKey: string;
+    let signer: string;
+
+    before(async () => {
+        signerKey = hexUtils.random();
+        signer = ethjs.bufferToHex(ethjs.privateToAddress(ethjs.toBuffer(signerKey)));
+        testLib = await TestLibSignatureContract.deployFrom0xArtifactAsync(
+            artifacts.TestLibSignature,
+            env.provider,
+            env.txDefaults,
+            artifacts,
+        );
+    });
+
+    describe('getSignerOfHash()', () => {
+        it('can recover the signer of an EIP712 signature', async () => {
+            const hash = hexUtils.random();
+            const sig = eip712SignHashWithKey(hash, signerKey);
+            const recovered = await testLib.getSignerOfHash(hash, sig).callAsync();
+            expect(recovered).to.eq(signer);
+        });
+
+        it('can recover the signer of an EthSign signature', async () => {
+            const hash = hexUtils.random();
+            const sig = ethSignHashWithKey(hash, signerKey);
+            const recovered = await testLib.getSignerOfHash(hash, sig).callAsync();
+            expect(recovered).to.eq(signer);
+        });
+
+        it('throws if the signature type is out of range', async () => {
+            const hash = hexUtils.random();
+            const badType = (Object.values(SignatureType).slice(-1)[0] as number) + 1;
+            const sig = {
+                ...ethSignHashWithKey(hash, signerKey),
+                signatureType: badType,
+            };
+            return expect(testLib.getSignerOfHash(hash, sig).callAsync()).to.be.rejectedWith(EMPTY_REVERT);
+        });
+
+        it('throws if the signature data is malformed', async () => {
+            const hash = hexUtils.random();
+            const sig = {
+                ...ethSignHashWithKey(hash, signerKey),
+                v: 1,
+            };
+            return expect(testLib.getSignerOfHash(hash, sig).callAsync()).to.revertWith(
+                new SignatureValidationError(SignatureValidationErrorCodes.BadSignatureData, hash),
+            );
+        });
+
+        it('throws if an EC value is out of range', async () => {
+            const hash = hexUtils.random();
+            const sig = {
+                ...ethSignHashWithKey(hash, signerKey),
+                r: '0xfffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141',
+            };
+            return expect(testLib.getSignerOfHash(hash, sig).callAsync()).to.revertWith(
+                new SignatureValidationError(SignatureValidationErrorCodes.BadSignatureData, hash),
+            );
+        });
+
+        it('throws if the type is Illegal', async () => {
+            const hash = hexUtils.random();
+            const sig = {
+                ...ethSignHashWithKey(hash, signerKey),
+                signatureType: SignatureType.Illegal,
+            };
+            return expect(testLib.getSignerOfHash(hash, sig).callAsync()).to.revertWith(
+                new SignatureValidationError(SignatureValidationErrorCodes.Illegal, hash),
+            );
+        });
+
+        it('throws if the type is Invalid', async () => {
+            const hash = hexUtils.random();
+            const sig = {
+                ...ethSignHashWithKey(hash, signerKey),
+                signatureType: SignatureType.Invalid,
+            };
+            return expect(testLib.getSignerOfHash(hash, sig).callAsync()).to.revertWith(
+                new SignatureValidationError(SignatureValidationErrorCodes.AlwaysInvalid, hash),
+            );
+        });
+    });
+});

contracts/zero-ex/test/lib_token_spender_test.ts

@@ -0,0 +1,210 @@
+import {
+    blockchainTests,
+    expect,
+    getRandomInteger,
+    randomAddress,
+    verifyEventsFromLogs,
+} from '@0x/contracts-test-utils';
+import { BigNumber, hexUtils, StringRevertError, ZeroExRevertErrors } from '@0x/utils';
+
+import { artifacts } from './artifacts';
+import {
+    TestLibTokenSpenderContract,
+    TestLibTokenSpenderEvents,
+    TestTokenSpenderERC20TokenContract,
+    TestTokenSpenderERC20TokenEvents,
+} from './wrappers';
+
+blockchainTests.resets('LibTokenSpender library', env => {
+    let tokenSpender: TestLibTokenSpenderContract;
+    let token: TestTokenSpenderERC20TokenContract;
+
+    before(async () => {
+        tokenSpender = await TestLibTokenSpenderContract.deployFrom0xArtifactAsync(
+            artifacts.TestLibTokenSpender,
+            env.provider,
+            env.txDefaults,
+            artifacts,
+        );
+        token = await TestTokenSpenderERC20TokenContract.deployFrom0xArtifactAsync(
+            artifacts.TestTokenSpenderERC20Token,
+            env.provider,
+            env.txDefaults,
+            artifacts,
+        );
+    });
+
+    describe('spendERC20Tokens()', () => {
+        const EMPTY_RETURN_AMOUNT = 1337;
+        const FALSE_RETURN_AMOUNT = 1338;
+        const REVERT_RETURN_AMOUNT = 1339;
+        const TRIGGER_FALLBACK_SUCCESS_AMOUNT = 1340;
+        const EXTRA_RETURN_TRUE_AMOUNT = 1341;
+        const EXTRA_RETURN_FALSE_AMOUNT = 1342;
+
+        it('spendERC20Tokens() successfully calls compliant ERC20 token', async () => {
+            const tokenFrom = randomAddress();
+            const tokenTo = randomAddress();
+            const tokenAmount = new BigNumber(123456);
+            const receipt = await tokenSpender
+                .spendERC20Tokens(token.address, tokenFrom, tokenTo, tokenAmount)
+                .awaitTransactionSuccessAsync();
+            verifyEventsFromLogs(
+                receipt.logs,
+                [
+                    {
+                        sender: tokenSpender.address,
+                        from: tokenFrom,
+                        to: tokenTo,
+                        amount: tokenAmount,
+                    },
+                ],
+                TestTokenSpenderERC20TokenEvents.TransferFromCalled,
+            );
+        });
+
+        it('spendERC20Tokens() successfully calls non-compliant ERC20 token', async () => {
+            const tokenFrom = randomAddress();
+            const tokenTo = randomAddress();
+            const tokenAmount = new BigNumber(EMPTY_RETURN_AMOUNT);
+            const receipt = await tokenSpender
+                .spendERC20Tokens(token.address, tokenFrom, tokenTo, tokenAmount)
+                .awaitTransactionSuccessAsync();
+            verifyEventsFromLogs(
+                receipt.logs,
+                [
+                    {
+                        sender: tokenSpender.address,
+                        from: tokenFrom,
+                        to: tokenTo,
+                        amount: tokenAmount,
+                    },
+                ],
+                TestTokenSpenderERC20TokenEvents.TransferFromCalled,
+            );
+        });
+
+        it('spendERC20Tokens() reverts if ERC20 token reverts', async () => {
+            const tokenFrom = randomAddress();
+            const tokenTo = randomAddress();
+            const tokenAmount = new BigNumber(REVERT_RETURN_AMOUNT);
+            const tx = tokenSpender
+                .spendERC20Tokens(token.address, tokenFrom, tokenTo, tokenAmount)
+                .awaitTransactionSuccessAsync();
+            const expectedError = new ZeroExRevertErrors.Spender.SpenderERC20TransferFromFailedError(
+                token.address,
+                tokenFrom,
+                tokenTo,
+                tokenAmount,
+                new StringRevertError('TestTokenSpenderERC20Token/Revert').encode(),
+            );
+            return expect(tx).to.revertWith(expectedError);
+        });
+
+        it('spendERC20Tokens() reverts if ERC20 token returns false', async () => {
+            const tokenFrom = randomAddress();
+            const tokenTo = randomAddress();
+            const tokenAmount = new BigNumber(FALSE_RETURN_AMOUNT);
+            const tx = tokenSpender
+                .spendERC20Tokens(token.address, tokenFrom, tokenTo, tokenAmount)
+                .awaitTransactionSuccessAsync();
+            return expect(tx).to.revertWith(
+                new ZeroExRevertErrors.Spender.SpenderERC20TransferFromFailedError(
+                    token.address,
+                    tokenFrom,
+                    tokenTo,
+                    tokenAmount,
+                    hexUtils.leftPad(0),
+                ),
+            );
+        });
+
+        it('spendERC20Tokens() falls back successfully to TokenSpender._spendERC20Tokens()', async () => {
+            const tokenFrom = randomAddress();
+            const tokenTo = randomAddress();
+            const tokenAmount = new BigNumber(TRIGGER_FALLBACK_SUCCESS_AMOUNT);
+            const receipt = await tokenSpender
+                .spendERC20Tokens(token.address, tokenFrom, tokenTo, tokenAmount)
+                .awaitTransactionSuccessAsync();
+            verifyEventsFromLogs(
+                receipt.logs,
+                [
+                    {
+                        token: token.address,
+                        owner: tokenFrom,
+                        to: tokenTo,
+                        amount: tokenAmount,
+                    },
+                ],
+                TestLibTokenSpenderEvents.FallbackCalled,
+            );
+        });
+
+        it('spendERC20Tokens() allows extra data after true', async () => {
+            const tokenFrom = randomAddress();
+            const tokenTo = randomAddress();
+            const tokenAmount = new BigNumber(EXTRA_RETURN_TRUE_AMOUNT);
+
+            const receipt = await tokenSpender
+                .spendERC20Tokens(token.address, tokenFrom, tokenTo, tokenAmount)
+                .awaitTransactionSuccessAsync();
+            verifyEventsFromLogs(
+                receipt.logs,
+                [
+                    {
+                        sender: tokenSpender.address,
+                        from: tokenFrom,
+                        to: tokenTo,
+                        amount: tokenAmount,
+                    },
+                ],
+                TestTokenSpenderERC20TokenEvents.TransferFromCalled,
+            );
+        });
+
+        it("spendERC20Tokens() reverts when there's extra data after false", async () => {
+            const tokenFrom = randomAddress();
+            const tokenTo = randomAddress();
+            const tokenAmount = new BigNumber(EXTRA_RETURN_FALSE_AMOUNT);
+
+            const tx = tokenSpender
+                .spendERC20Tokens(token.address, tokenFrom, tokenTo, tokenAmount)
+                .awaitTransactionSuccessAsync();
+            return expect(tx).to.revertWith(
+                new ZeroExRevertErrors.Spender.SpenderERC20TransferFromFailedError(
+                    token.address,
+                    tokenFrom,
+                    tokenTo,
+                    tokenAmount,
+                    hexUtils.leftPad(EXTRA_RETURN_FALSE_AMOUNT, 64),
+                ),
+            );
+        });
+
+        it('spendERC20Tokens() cannot call self', async () => {
+            const tokenFrom = randomAddress();
+            const tokenTo = randomAddress();
+            const tokenAmount = new BigNumber(123456);
+
+            const tx = tokenSpender
+                .spendERC20Tokens(tokenSpender.address, tokenFrom, tokenTo, tokenAmount)
+                .awaitTransactionSuccessAsync();
+            return expect(tx).to.revertWith('LibTokenSpender/CANNOT_INVOKE_SELF');
+        });
+    });
+
+    describe('getSpendableERC20BalanceOf()', () => {
+        it("returns the minimum of the owner's balance and allowance", async () => {
+            const balance = getRandomInteger(1, '1e18');
+            const allowance = getRandomInteger(1, '1e18');
+            const tokenOwner = randomAddress();
+            await token
+                .setBalanceAndAllowanceOf(tokenOwner, balance, tokenSpender.address, allowance)
+                .awaitTransactionSuccessAsync();
+            const spendableBalance = await tokenSpender
+                .getSpendableERC20BalanceOf(token.address, tokenOwner)
+                .callAsync();
+            expect(spendableBalance).to.bignumber.eq(BigNumber.min(balance, allowance));
+        });
+    });
+});

contracts/zero-ex/test/protocol_fees_test.ts

@@ -0,0 +1,75 @@
+import { blockchainTests, constants, expect } from '@0x/contracts-test-utils';
+import { BigNumber, hexUtils } from '@0x/utils';
+
+import { artifacts } from './artifacts';
+import { TestProtocolFeesContract, TestStakingContract, TestWethContract } from './wrappers';
+
+blockchainTests.resets('ProtocolFees', env => {
+    let payer: string;
+    let protocolFees: TestProtocolFeesContract;
+    let staking: TestStakingContract;
+    let weth: TestWethContract;
+
+    before(async () => {
+        [payer] = await env.getAccountAddressesAsync();
+        protocolFees = await TestProtocolFeesContract.deployFrom0xArtifactAsync(
+            artifacts.TestProtocolFees,
+            env.provider,
+            env.txDefaults,
+            artifacts,
+        );
+        weth = await TestWethContract.deployFrom0xArtifactAsync(
+            artifacts.TestWeth,
+            env.provider,
+            env.txDefaults,
+            artifacts,
+        );
+        staking = await TestStakingContract.deployFrom0xArtifactAsync(
+            artifacts.TestStaking,
+            env.provider,
+            env.txDefaults,
+            artifacts,
+            weth.address,
+        );
+        await weth.mint(payer, constants.ONE_ETHER).awaitTransactionSuccessAsync();
+        await weth.approve(protocolFees.address, constants.ONE_ETHER).awaitTransactionSuccessAsync({ from: payer });
+    });
+
+    describe('_collectProtocolFee()', () => {
+        it('can collect a protocol fee multiple times', async () => {
+            const poolId = hexUtils.random();
+            const amount1 = new BigNumber(123456);
+            const amount2 = new BigNumber(456789);
+
+            // Transfer amount1 via WETH.
+            await protocolFees
+                .collectProtocolFee(poolId, amount1, weth.address)
+                .awaitTransactionSuccessAsync({ from: payer });
+
+            // Send to staking contract.
+            await protocolFees
+                .transferFeesForPool(poolId, staking.address, weth.address)
+                .awaitTransactionSuccessAsync();
+
+            // Transfer amount2 via ETH.
+            await protocolFees
+                .collectProtocolFee(poolId, amount2, weth.address)
+                .awaitTransactionSuccessAsync({ from: payer, value: amount2 });
+
+            // Send to staking contract again.
+            await protocolFees
+                .transferFeesForPool(poolId, staking.address, weth.address)
+                .awaitTransactionSuccessAsync();
+
+            const balance = await staking.balanceForPool(poolId).callAsync();
+            const wethBalance = await weth.balanceOf(staking.address).callAsync();
+
+            // Check that staking accounted for the collected ether properly.
+            expect(balance).to.bignumber.eq(wethBalance);
+
+            // We leave 1 wei behind, of both ETH and WETH, for gas reasons.
+            const total = amount1.plus(amount2).minus(2);
+            return expect(balance).to.bignumber.eq(total);
+        });
+    });
+});

contracts/zero-ex/test/transformers/fill_quote_transformer_test.ts

@@ -65,17 +65,22 @@ blockchainTests.resets('FillQuoteTransformer', env => {
                 mooniswapBridge: NULL_ADDRESS,
                 mStableBridge: NULL_ADDRESS,
                 oasisBridge: NULL_ADDRESS,
+                sushiswapBridge: NULL_ADDRESS,
+                swerveBridge: NULL_ADDRESS,
                 uniswapBridge: NULL_ADDRESS,
                 uniswapV2Bridge: NULL_ADDRESS,
                 kyberNetworkProxy: NULL_ADDRESS,
                 oasis: NULL_ADDRESS,
+                sushiswapRouter: NULL_ADDRESS,
                 uniswapV2Router: NULL_ADDRESS,
                 uniswapExchangeFactory: NULL_ADDRESS,
                 mStable: NULL_ADDRESS,
                 weth: NULL_ADDRESS,
                 shellBridge: NULL_ADDRESS,
-                shell: NULL_ADDRESS,
                 creamBridge: NULL_ADDRESS,
+                dodoBridge: NULL_ADDRESS,
+                dodoHelper: NULL_ADDRESS,
+                snowSwapBridge: NULL_ADDRESS,
             },
         );
         transformer = await FillQuoteTransformerContract.deployFrom0xArtifactAsync(