wip: stash

* Added some more deployments

* Rename WETH9 to WETH9V06

* Set to 0.6.x

* fix typo

.circleci/config.yml

@@ -10,6 +10,7 @@ jobs:
         working_directory: ~/repo
         steps:
             - checkout
+            - run: git submodule update --init --recursive
             - run: echo 'export PATH=$HOME/CIRCLE_PROJECT_REPONAME/node_modules/.bin:$PATH' >> $BASH_ENV
             - run:
                   name: install-yarn
@@ -77,6 +78,17 @@ jobs:
                   keys:
                       - repo-{{ .Environment.CIRCLE_SHA1 }}
             - run: yarn wsrun -p @0x/contracts-multisig -p @0x/contracts-utils -p @0x/contracts-exchange-libs -p  @0x/contracts-erc20 -p @0x/contracts-erc721 -p @0x/contracts-erc1155 -p @0x/contracts-asset-proxy -p @0x/contracts-broker -p @0x/contracts-zero-ex -m --serial -c test:circleci
+    test-foundry:
+        resource_class: medium+
+        docker:
+            - image: ghcr.io/foundry-rs/foundry:latest
+        working_directory: ~/repo/contracts/zero-ex
+        steps:
+            - restore_cache:
+                  keys:
+                      - repo-{{ .Environment.CIRCLE_SHA1 }}
+            # - run: forge install
+            - run: forge test -vvv
     test-publish:
         resource_class: large
         environment:
@@ -110,15 +122,15 @@ jobs:
             - image: node:16
         working_directory: ~/repo
         environment:
-            RUST_ROUTER: "true"
+            RUST_ROUTER: 'true'
         steps:
             - restore_cache:
                   keys:
                       - repo-{{ .Environment.CIRCLE_SHA1 }}
             - run: yarn wsrun -p @0x/contracts-test-utils -m --serial -c test:circleci
+            - run: yarn wsrun -p @0x/contract-addresses -m --serial -c test:circleci
             - run: yarn wsrun -p @0x/contract-artifacts -m --serial -c test:circleci
             - run: yarn wsrun -p @0x/contract-wrappers-test -m --serial -c test:circleci
-            - run: yarn wsrun -p @0x/migrations -m --serial -c test:circleci
             - run: yarn wsrun -p @0x/order-utils -m --serial -c test:circleci
             - run: yarn wsrun -p @0x/asset-swapper -m --serial -c test:circleci
             - save_cache:
@@ -182,6 +194,9 @@ workflows:
             # - test-contracts-extra-ganache:
             #       requires:
             #           - build
+            - test-foundry:
+                  requires:
+                      - build
             - test-contracts-rest-ganache:
                   requires:
                       - build

.github/autolabeler.yml

@@ -1,7 +1,6 @@
 python: ['python-packages']
 contracts: ['contracts']
 @0x/contract-addresses: ['packages/contract-addresses']
-@0x/migrations: ['packages/migrations']
 @0x/order-utils: ['packages/order-utils']
 @0x/contract-artifacts: ['packages/contract-artifacts']
 @0x/contract-wrappers: ['packages/contract-wrappers']

.gitignore

@@ -173,6 +173,15 @@ contracts/zero-ex/test/generated-wrappers/
 contracts/treasury/generated-wrappers/
 contracts/treasury/test/generated-wrappers/
 
+# foundry artifacts
+contracts/zero-ex/foundry-artifacts/
+
+# foundry cache 
+contracts/zero-ex/foundry-cache/
+
+# typechain wrappers
+contracts/zero-ex/typechain-wrappers/
+
 # Doc README copy
 packages/*/docs/README.md
 

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "contracts/zero-ex/contracts/deps/forge-std"]
+	path = contracts/zero-ex/contracts/deps/forge-std
+	url = https://github.com/foundry-rs/forge-std
+[submodule "contracts/utils/contracts/src/openzeppelin-contracts"]
+	path = contracts/utils/contracts/src/openzeppelin-contracts
+	url = https://github.com/OpenZeppelin/openzeppelin-contracts

CODEOWNERS

@@ -1,18 +1,20 @@
 # See https://help.github.com/articles/about-codeowners/
+
 # for more info about CODEOWNERS file
 
 # It uses the same pattern rule for gitignore file
+
 # https://git-scm.com/docs/gitignore#_pattern_format
 
-# Website
-packages/asset-swapper/  @BMillman19 @fragosti @dave4506
-packages/instant/  @BMillman19 @fragosti @dave4506
+packages/asset-swapper/ @dekz @dextracker @kyu-c
 
 # Dev tools & setup
-.circleci/ @dorothy-zbornak
-packages/contract-addresses/ @abandeali1
-packages/contract-artifacts/ @abandeali1
-packages/order-utils/ @dorothy-zbornak 
+
+.circleci/ @dekz
+packages/contract-addresses/ @dekz @dextracker @kyu-c
+packages/contract-artifacts/ @dekz
+packages/protocol-utils/ @dekz
 
 # Protocol/smart contracts
-contracts/ @abandeali1 @hysz @dorothy-zbornak @mzhu25
+
+contracts/ @dekz @dextracker

README.md

@@ -38,7 +38,6 @@ These packages are all under development. See [/contracts/README.md](/contracts/
 | [`@0x/protocol-utils`](/packages/protocol-utils)         | [![npm](https://img.shields.io/npm/v/@0x/protocol-utils.svg)](https://www.npmjs.com/package/@0x/protocol-utils)         | A set of utilities for generating, parsing, signing and validating 0x orders                   |
 | [`@0x/contract-addresses`](/packages/contract-addresses) | [![npm](https://img.shields.io/npm/v/@0x/contract-addresses.svg)](https://www.npmjs.com/package/@0x/contract-addresses) | A tiny utility library for getting known deployed contract addresses for a particular network. |
 | [`@0x/contract-wrappers`](/packages/contract-wrappers)   | [![npm](https://img.shields.io/npm/v/@0x/contract-wrappers.svg)](https://www.npmjs.com/package/@0x/contract-wrappers)   | JS/TS wrappers for interacting with the 0x smart contracts                                     |
-| [`@0x/migrations`](/packages/migrations)                 | [![npm](https://img.shields.io/npm/v/@0x/migrations.svg)](https://www.npmjs.com/package/@0x/migrations)                 | Migration tool for deploying 0x smart contracts on private testnets                            |
 | [`@0x/contract-artifacts`](/packages/contract-artifacts) | [![npm](https://img.shields.io/npm/v/@0x/contract-artifacts.svg)](https://www.npmjs.com/package/@0x/contract-artifacts) | 0x smart contract compilation artifacts                                                        |  |
 
 ## Usage

contracts/erc20/CHANGELOG.json

@@ -1,4 +1,58 @@
 [
+    {
+        "timestamp": 1660093941,
+        "version": "3.3.36",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1660073235,
+        "version": "3.3.35",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1659750766,
+        "version": "3.3.34",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1658950329,
+        "version": "3.3.33",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1655244958,
+        "version": "3.3.32",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1654284040,
+        "version": "3.3.31",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1652919697,
         "version": "3.3.30",

contracts/erc20/CHANGELOG.md

@@ -5,6 +5,30 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.3.36 - _August 10, 2022_
+
+    * Dependencies updated
+
+## v3.3.35 - _August 9, 2022_
+
+    * Dependencies updated
+
+## v3.3.34 - _August 6, 2022_
+
+    * Dependencies updated
+
+## v3.3.33 - _July 27, 2022_
+
+    * Dependencies updated
+
+## v3.3.32 - _June 14, 2022_
+
+    * Dependencies updated
+
+## v3.3.31 - _June 3, 2022_
+
+    * Dependencies updated
+
 ## v3.3.30 - _May 19, 2022_
 
     * Dependencies updated

contracts/erc20/contracts/src/v06/WETH9V06.sol

@@ -0,0 +1,758 @@
+// Copyright (C) 2015, 2016, 2017 Dapphub
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+// solhint-disable
+pragma solidity ^0.6.0;
+
+
+contract WETH9V06 {
+    string public name     = "Wrapped Ether";
+    string public symbol   = "WETH";
+    uint8  public decimals = 18;
+
+    event  Approval(address indexed _owner, address indexed _spender, uint _value);
+    event  Transfer(address indexed _from, address indexed _to, uint _value);
+    event  Deposit(address indexed _owner, uint _value);
+    event  Withdrawal(address indexed _owner, uint _value);
+
+    mapping (address => uint)                       public  balanceOf;
+    mapping (address => mapping (address => uint))  public  allowance;
+
+    receive() external payable {
+        deposit();
+    }
+    function deposit() public payable {
+        balanceOf[msg.sender] += msg.value;
+        emit Deposit(msg.sender, msg.value);
+    }
+    function withdraw(uint wad) public {
+        require(balanceOf[msg.sender] >= wad);
+        balanceOf[msg.sender] -= wad;
+        msg.sender.transfer(wad);
+        emit Withdrawal(msg.sender, wad);
+    }
+
+    function totalSupply() public view returns (uint) {
+        return address(this).balance;
+    }
+
+    function approve(address guy, uint wad) public returns (bool) {
+        allowance[msg.sender][guy] = wad;
+        emit Approval(msg.sender, guy, wad);
+        return true;
+    }
+
+    function transfer(address dst, uint wad) public returns (bool) {
+        return transferFrom(msg.sender, dst, wad);
+    }
+
+    function transferFrom(address src, address dst, uint wad)
+        public
+        returns (bool)
+    {
+        require(balanceOf[src] >= wad);
+
+        if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) {
+            require(allowance[src][msg.sender] >= wad);
+            allowance[src][msg.sender] -= wad;
+        }
+
+        balanceOf[src] -= wad;
+        balanceOf[dst] += wad;
+
+        emit Transfer(src, dst, wad);
+
+        return true;
+    }
+}
+
+
+/*
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
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+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
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+    but WITHOUT ANY WARRANTY; without even the implied warranty of
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+*/

contracts/erc20/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc20",
-    "version": "3.3.30",
+    "version": "3.3.36",
     "engines": {
         "node": ">=6.12"
     },
@@ -38,7 +38,7 @@
     },
     "config": {
         "publicInterfaceContracts": "DummyERC20Token,ERC20Token,WETH9,ZRXToken,DummyNoReturnERC20Token,DummyMultipleReturnERC20Token",
-        "abis": "./test/generated-artifacts/@(DummyERC20Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|ERC20Token|IERC20Token|IERC20TokenV06|IEtherToken|IEtherTokenV06|LibERC20Token|LibERC20TokenV06|MintableERC20Token|TestLibERC20Token|TestLibERC20TokenTarget|UnlimitedAllowanceERC20Token|UntransferrableDummyERC20Token|WETH9|ZRXToken).json",
+        "abis": "./test/generated-artifacts/@(DummyERC20Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|ERC20Token|IERC20Token|IERC20TokenV06|IEtherToken|IEtherTokenV06|LibERC20Token|LibERC20TokenV06|MintableERC20Token|TestLibERC20Token|TestLibERC20TokenTarget|UnlimitedAllowanceERC20Token|UntransferrableDummyERC20Token|WETH9|WETH9V06|ZRXToken).json",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
@@ -51,18 +51,18 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/tokens",
     "devDependencies": {
-        "@0x/abi-gen": "^5.8.0",
-        "@0x/contracts-gen": "^2.0.46",
-        "@0x/contracts-test-utils": "^5.4.21",
-        "@0x/contracts-utils": "^4.8.11",
-        "@0x/dev-utils": "^4.2.14",
-        "@0x/sol-compiler": "^4.8.1",
+        "@0x/abi-gen": "^5.8.1",
+        "@0x/contracts-gen": "^2.0.47",
+        "@0x/contracts-test-utils": "^5.4.27",
+        "@0x/contracts-utils": "^4.8.17",
+        "@0x/dev-utils": "^5.0.0",
+        "@0x/sol-compiler": "^4.8.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.4",
         "@0x/types": "^3.3.6",
         "@0x/typescript-typings": "^5.3.1",
-        "@0x/utils": "^6.5.3",
-        "@0x/web3-wrapper": "^7.6.5",
+        "@0x/utils": "^7.0.0",
+        "@0x/web3-wrapper": "^8.0.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -70,7 +70,7 @@
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
         "dirty-chai": "^2.0.1",
-        "ethereum-types": "^3.7.0",
+        "ethereum-types": "^3.7.1",
         "lodash": "^4.17.11",
         "make-promises-safe": "^1.1.0",
         "mocha": "^6.2.0",
@@ -82,7 +82,7 @@
         "typescript": "4.6.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.5.0",
+        "@0x/base-contract": "^7.0.0",
         "ethers": "~4.0.4"
     },
     "publishConfig": {

contracts/erc20/test/artifacts.ts

@@ -21,6 +21,7 @@ import * as TestLibERC20TokenTarget from '../test/generated-artifacts/TestLibERC
 import * as UnlimitedAllowanceERC20Token from '../test/generated-artifacts/UnlimitedAllowanceERC20Token.json';
 import * as UntransferrableDummyERC20Token from '../test/generated-artifacts/UntransferrableDummyERC20Token.json';
 import * as WETH9 from '../test/generated-artifacts/WETH9.json';
+import * as WETH9V06 from '../test/generated-artifacts/WETH9V06.json';
 import * as ZRXToken from '../test/generated-artifacts/ZRXToken.json';
 export const artifacts = {
     ERC20Token: ERC20Token as ContractArtifact,
@@ -34,6 +35,7 @@ export const artifacts = {
     IERC20TokenV06: IERC20TokenV06 as ContractArtifact,
     IEtherTokenV06: IEtherTokenV06 as ContractArtifact,
     LibERC20TokenV06: LibERC20TokenV06 as ContractArtifact,
+    WETH9V06: WETH9V06 as ContractArtifact,
     DummyERC20Token: DummyERC20Token as ContractArtifact,
     DummyMultipleReturnERC20Token: DummyMultipleReturnERC20Token as ContractArtifact,
     DummyNoReturnERC20Token: DummyNoReturnERC20Token as ContractArtifact,

contracts/erc20/test/wrappers.ts

@@ -19,4 +19,5 @@ export * from '../test/generated-wrappers/test_lib_erc20_token_target';
 export * from '../test/generated-wrappers/unlimited_allowance_erc20_token';
 export * from '../test/generated-wrappers/untransferrable_dummy_erc20_token';
 export * from '../test/generated-wrappers/weth9';
+export * from '../test/generated-wrappers/weth9v06';
 export * from '../test/generated-wrappers/zrx_token';

contracts/erc20/tsconfig.json

@@ -25,6 +25,7 @@
         "test/generated-artifacts/UnlimitedAllowanceERC20Token.json",
         "test/generated-artifacts/UntransferrableDummyERC20Token.json",
         "test/generated-artifacts/WETH9.json",
+        "test/generated-artifacts/WETH9V06.json",
         "test/generated-artifacts/ZRXToken.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]

contracts/test-utils/CHANGELOG.json

@@ -1,4 +1,58 @@
 [
+    {
+        "timestamp": 1660093941,
+        "version": "5.4.27",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1660073235,
+        "version": "5.4.26",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1659750766,
+        "version": "5.4.25",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1658950329,
+        "version": "5.4.24",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1655244958,
+        "version": "5.4.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1654284040,
+        "version": "5.4.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1652919697,
         "version": "5.4.21",

contracts/test-utils/CHANGELOG.md

@@ -5,6 +5,30 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v5.4.27 - _August 10, 2022_
+
+    * Dependencies updated
+
+## v5.4.26 - _August 9, 2022_
+
+    * Dependencies updated
+
+## v5.4.25 - _August 6, 2022_
+
+    * Dependencies updated
+
+## v5.4.24 - _July 27, 2022_
+
+    * Dependencies updated
+
+## v5.4.23 - _June 14, 2022_
+
+    * Dependencies updated
+
+## v5.4.22 - _June 3, 2022_
+
+    * Dependencies updated
+
 ## v5.4.21 - _May 19, 2022_
 
     * Dependencies updated

contracts/test-utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-test-utils",
-    "version": "5.4.21",
+    "version": "5.4.27",
     "engines": {
         "node": ">=6.12"
     },
@@ -34,7 +34,7 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/test-utils",
     "devDependencies": {
-        "@0x/sol-compiler": "^4.8.1",
+        "@0x/sol-compiler": "^4.8.2",
         "@0x/tslint-config": "^4.1.4",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
@@ -42,20 +42,20 @@
         "typescript": "4.6.3"
     },
     "dependencies": {
-        "@0x/assert": "^3.0.34",
-        "@0x/base-contract": "^6.5.0",
-        "@0x/contract-addresses": "^6.14.0",
-        "@0x/dev-utils": "^4.2.14",
+        "@0x/assert": "^3.0.35",
+        "@0x/base-contract": "^7.0.0",
+        "@0x/contract-addresses": "^6.19.2",
+        "@0x/dev-utils": "^5.0.0",
         "@0x/json-schemas": "^6.4.4",
         "@0x/order-utils": "^10.4.28",
-        "@0x/sol-coverage": "^4.0.45",
-        "@0x/sol-profiler": "^4.1.35",
-        "@0x/sol-trace": "^3.0.45",
-        "@0x/subproviders": "^6.6.5",
+        "@0x/sol-coverage": "^4.0.46",
+        "@0x/sol-profiler": "^4.1.36",
+        "@0x/sol-trace": "^3.0.46",
+        "@0x/subproviders": "^7.0.0",
         "@0x/types": "^3.3.6",
         "@0x/typescript-typings": "^5.3.1",
-        "@0x/utils": "^6.5.3",
-        "@0x/web3-wrapper": "^7.6.5",
+        "@0x/utils": "^7.0.0",
+        "@0x/web3-wrapper": "^8.0.0",
         "@types/bn.js": "^4.11.0",
         "@types/js-combinatorics": "^0.5.29",
         "@types/lodash": "4.14.104",
@@ -67,7 +67,7 @@
         "chai-bignumber": "^3.0.0",
         "decimal.js": "^10.2.0",
         "dirty-chai": "^2.0.1",
-        "ethereum-types": "^3.7.0",
+        "ethereum-types": "^3.7.1",
         "ethereumjs-util": "^7.0.10",
         "ethers": "~4.0.4",
         "js-combinatorics": "^0.5.3",

contracts/test-utils/src/assertions.ts

@@ -38,7 +38,7 @@ async function _getGanacheOrGethErrorAsync(ganacheError: string, gethError: stri
 }
 
 async function _getInsufficientFundsErrorMessageAsync(): Promise<string> {
-    return _getGanacheOrGethErrorAsync("sender doesn't have enough funds", 'insufficient funds');
+    return _getGanacheOrGethErrorAsync('insufficient funds for gas * price + value', 'insufficient funds');
 }
 
 async function _getTransactionFailedErrorMessageAsync(): Promise<string> {

contracts/treasury/CHANGELOG.json

@@ -1,4 +1,58 @@
 [
+    {
+        "timestamp": 1660093941,
+        "version": "1.4.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1660073235,
+        "version": "1.4.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1659750766,
+        "version": "1.4.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1658950329,
+        "version": "1.4.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1655244958,
+        "version": "1.4.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1654284040,
+        "version": "1.4.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1652919697,
         "version": "1.4.13",

contracts/treasury/CHANGELOG.md

@@ -5,6 +5,30 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.4.19 - _August 10, 2022_
+
+    * Dependencies updated
+
+## v1.4.18 - _August 9, 2022_
+
+    * Dependencies updated
+
+## v1.4.17 - _August 6, 2022_
+
+    * Dependencies updated
+
+## v1.4.16 - _July 27, 2022_
+
+    * Dependencies updated
+
+## v1.4.15 - _June 14, 2022_
+
+    * Dependencies updated
+
+## v1.4.14 - _June 3, 2022_
+
+    * Dependencies updated
+
 ## v1.4.13 - _May 19, 2022_
 
     * Dependencies updated

contracts/treasury/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-treasury",
-    "version": "1.4.13",
+    "version": "1.4.19",
     "engines": {
         "node": ">=6.12"
     },
@@ -46,14 +46,14 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/treasury",
     "devDependencies": {
-        "@0x/abi-gen": "^5.8.0",
-        "@0x/contract-addresses": "^6.14.0",
+        "@0x/abi-gen": "^5.8.1",
+        "@0x/contract-addresses": "^6.19.2",
         "@0x/contracts-asset-proxy": "^3.7.19",
-        "@0x/contracts-erc20": "^3.3.30",
-        "@0x/contracts-gen": "^2.0.46",
+        "@0x/contracts-erc20": "^3.3.36",
+        "@0x/contracts-gen": "^2.0.47",
         "@0x/contracts-staking": "^2.0.45",
-        "@0x/contracts-test-utils": "^5.4.21",
-        "@0x/sol-compiler": "^4.8.1",
+        "@0x/contracts-test-utils": "^5.4.27",
+        "@0x/sol-compiler": "^4.8.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.4",
         "@types/isomorphic-fetch": "^0.0.35",
@@ -72,14 +72,14 @@
         "typescript": "4.6.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.5.0",
-        "@0x/protocol-utils": "^11.13.0",
-        "@0x/subproviders": "^6.6.5",
+        "@0x/base-contract": "^7.0.0",
+        "@0x/protocol-utils": "^11.16.3",
+        "@0x/subproviders": "^7.0.0",
         "@0x/types": "^3.3.6",
         "@0x/typescript-typings": "^5.3.1",
-        "@0x/utils": "^6.5.3",
-        "@0x/web3-wrapper": "^7.6.5",
-        "ethereum-types": "^3.7.0",
+        "@0x/utils": "^7.0.0",
+        "@0x/web3-wrapper": "^8.0.0",
+        "ethereum-types": "^3.7.1",
         "ethereumjs-util": "^7.0.10"
     },
     "publishConfig": {

contracts/utils/CHANGELOG.json

@@ -1,4 +1,58 @@
 [
+    {
+        "timestamp": 1660093941,
+        "version": "4.8.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1660073235,
+        "version": "4.8.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1659750766,
+        "version": "4.8.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1658950329,
+        "version": "4.8.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1655244958,
+        "version": "4.8.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1654284040,
+        "version": "4.8.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1652919697,
         "version": "4.8.11",

contracts/utils/CHANGELOG.md

@@ -5,6 +5,30 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.8.17 - _August 10, 2022_
+
+    * Dependencies updated
+
+## v4.8.16 - _August 9, 2022_
+
+    * Dependencies updated
+
+## v4.8.15 - _August 6, 2022_
+
+    * Dependencies updated
+
+## v4.8.14 - _July 27, 2022_
+
+    * Dependencies updated
+
+## v4.8.13 - _June 14, 2022_
+
+    * Dependencies updated
+
+## v4.8.12 - _June 3, 2022_
+
+    * Dependencies updated
+
 ## v4.8.11 - _May 19, 2022_
 
     * Dependencies updated

contracts/utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-utils",
-    "version": "4.8.11",
+    "version": "4.8.17",
     "engines": {
         "node": ">=6.12"
     },
@@ -50,15 +50,15 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/utils",
     "devDependencies": {
-        "@0x/abi-gen": "^5.8.0",
-        "@0x/contracts-gen": "^2.0.46",
-        "@0x/contracts-test-utils": "^5.4.21",
-        "@0x/dev-utils": "^4.2.14",
+        "@0x/abi-gen": "^5.8.1",
+        "@0x/contracts-gen": "^2.0.47",
+        "@0x/contracts-test-utils": "^5.4.27",
+        "@0x/dev-utils": "^5.0.0",
         "@0x/order-utils": "^10.4.28",
-        "@0x/sol-compiler": "^4.8.1",
+        "@0x/sol-compiler": "^4.8.2",
         "@0x/tslint-config": "^4.1.4",
         "@0x/types": "^3.3.6",
-        "@0x/web3-wrapper": "^7.6.5",
+        "@0x/web3-wrapper": "^8.0.0",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
@@ -79,11 +79,11 @@
         "typescript": "4.6.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.5.0",
+        "@0x/base-contract": "^7.0.0",
         "@0x/typescript-typings": "^5.3.1",
-        "@0x/utils": "^6.5.3",
+        "@0x/utils": "^7.0.0",
         "bn.js": "^4.11.8",
-        "ethereum-types": "^3.7.0"
+        "ethereum-types": "^3.7.1"
     },
     "publishConfig": {
         "access": "public"

contracts/zero-ex/CHANGELOG.json

@@ -1,4 +1,70 @@
 [
+    {
+        "timestamp": 1660093941,
+        "version": "0.36.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "0.36.2",
+        "changes": [
+            {
+                "note": "Add Foundry support",
+                "pr": 534
+            }
+        ],
+        "timestamp": 1659976271
+    },
+    {
+        "timestamp": 1659750766,
+        "version": "0.36.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "0.36.0",
+        "changes": [
+            {
+                "note": "Add Synthetix support in Ethereum and Optimism bridge adapters",
+                "pr": 518
+            }
+        ],
+        "timestamp": 1658950329
+    },
+    {
+        "version": "0.35.0",
+        "changes": [
+            {
+                "note": "Adds support for Velodrome OptimismBridgeAdapter",
+                "pr": 494
+            }
+        ],
+        "timestamp": 1655244958
+    },
+    {
+        "version": "0.34.0",
+        "changes": [
+            {
+                "note": "Splits BridgeAdapter up by chain",
+                "pr": 487
+            },
+            {
+                "note": "Add stETH wrap/unwrap support",
+                "pr": 476
+            },
+            {
+                "note": "Adds support for BancorV3 to EthereumBridgeAdapter",
+                "pr": 492
+            }
+        ],
+        "timestamp": 1654284040
+    },
     {
         "version": "0.33.0",
         "changes": [

contracts/zero-ex/CHANGELOG.md

@@ -5,6 +5,32 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v0.36.3 - _August 10, 2022_
+
+    * Dependencies updated
+
+## v0.36.2 - _August 8, 2022_
+
+    * Add Foundry support (#534)
+
+## v0.36.1 - _August 6, 2022_
+
+    * Dependencies updated
+
+## v0.36.0 - _July 27, 2022_
+
+    * Add Synthetix support in Ethereum and Optimism bridge adapters (#518)
+
+## v0.35.0 - _June 14, 2022_
+
+    * Adds support for Velodrome OptimismBridgeAdapter (#494)
+
+## v0.34.0 - _June 3, 2022_
+
+    * Splits BridgeAdapter up by chain (#487)
+    * Add stETH wrap/unwrap support (#476)
+    * Adds support for BancorV3 to EthereumBridgeAdapter (#492)
+
 ## v0.33.0 - _May 19, 2022_
 
     * Add support for GMX and Platypus to bridge adapter (#478)

contracts/zero-ex/README.md

@@ -2,6 +2,10 @@
 
 This package contains contracts for the ZeroEx extensible contract architecture.
 
+> **_NOTE:_**  This repo is undergoing a tooling change. If adding a contract, you will need to
+> add it to `compiler.json`. You can generate the entire list by running the following:
+> `find . -type f -name "*.sol" | grep -v foundry | grep -v "contracts/dep" | grep -v "node_modules"`
+
 ## Installation
 
 **Install**

contracts/zero-ex/compiler.json

@@ -1,6 +1,212 @@
 {
     "artifactsDir": "./test/generated-artifacts",
     "contractsDir": "./contracts",
+    "contracts": [
+        "./contracts/src/IZeroEx.sol",
+        "./contracts/src/ZeroEx.sol",
+        "./contracts/src/ZeroExOptimized.sol",
+        "./contracts/src/errors/LibCommonRichErrors.sol",
+        "./contracts/src/errors/LibLiquidityProviderRichErrors.sol",
+        "./contracts/src/errors/LibMetaTransactionsRichErrors.sol",
+        "./contracts/src/errors/LibNFTOrdersRichErrors.sol",
+        "./contracts/src/errors/LibNativeOrdersRichErrors.sol",
+        "./contracts/src/errors/LibOwnableRichErrors.sol",
+        "./contracts/src/errors/LibProxyRichErrors.sol",
+        "./contracts/src/errors/LibSignatureRichErrors.sol",
+        "./contracts/src/errors/LibSimpleFunctionRegistryRichErrors.sol",
+        "./contracts/src/errors/LibTransformERC20RichErrors.sol",
+        "./contracts/src/errors/LibWalletRichErrors.sol",
+        "./contracts/src/external/FeeCollector.sol",
+        "./contracts/src/external/FeeCollectorController.sol",
+        "./contracts/src/external/FlashWallet.sol",
+        "./contracts/src/external/IFlashWallet.sol",
+        "./contracts/src/external/ILiquidityProviderSandbox.sol",
+        "./contracts/src/external/LibFeeCollector.sol",
+        "./contracts/src/external/LiquidityProviderSandbox.sol",
+        "./contracts/src/external/PermissionlessTransformerDeployer.sol",
+        "./contracts/src/external/TransformerDeployer.sol",
+        "./contracts/src/features/BatchFillNativeOrdersFeature.sol",
+        "./contracts/src/features/BootstrapFeature.sol",
+        "./contracts/src/features/ERC165Feature.sol",
+        "./contracts/src/features/FundRecoveryFeature.sol",
+        "./contracts/src/features/LiquidityProviderFeature.sol",
+        "./contracts/src/features/MetaTransactionsFeature.sol",
+        "./contracts/src/features/NativeOrdersFeature.sol",
+        "./contracts/src/features/OtcOrdersFeature.sol",
+        "./contracts/src/features/OwnableFeature.sol",
+        "./contracts/src/features/PancakeSwapFeature.sol",
+        "./contracts/src/features/SimpleFunctionRegistryFeature.sol",
+        "./contracts/src/features/TransformERC20Feature.sol",
+        "./contracts/src/features/UniswapFeature.sol",
+        "./contracts/src/features/UniswapV3Feature.sol",
+        "./contracts/src/features/interfaces/IBatchFillNativeOrdersFeature.sol",
+        "./contracts/src/features/interfaces/IBootstrapFeature.sol",
+        "./contracts/src/features/interfaces/IERC1155OrdersFeature.sol",
+        "./contracts/src/features/interfaces/IERC165Feature.sol",
+        "./contracts/src/features/interfaces/IERC721OrdersFeature.sol",
+        "./contracts/src/features/interfaces/IFeature.sol",
+        "./contracts/src/features/interfaces/IFundRecoveryFeature.sol",
+        "./contracts/src/features/interfaces/ILiquidityProviderFeature.sol",
+        "./contracts/src/features/interfaces/IMetaTransactionsFeature.sol",
+        "./contracts/src/features/interfaces/IMultiplexFeature.sol",
+        "./contracts/src/features/interfaces/INativeOrdersEvents.sol",
+        "./contracts/src/features/interfaces/INativeOrdersFeature.sol",
+        "./contracts/src/features/interfaces/IOtcOrdersFeature.sol",
+        "./contracts/src/features/interfaces/IOwnableFeature.sol",
+        "./contracts/src/features/interfaces/IPancakeSwapFeature.sol",
+        "./contracts/src/features/interfaces/ISimpleFunctionRegistryFeature.sol",
+        "./contracts/src/features/interfaces/ITokenSpenderFeature.sol",
+        "./contracts/src/features/interfaces/ITransformERC20Feature.sol",
+        "./contracts/src/features/interfaces/IUniswapFeature.sol",
+        "./contracts/src/features/interfaces/IUniswapV3Feature.sol",
+        "./contracts/src/features/libs/LibNFTOrder.sol",
+        "./contracts/src/features/libs/LibNativeOrder.sol",
+        "./contracts/src/features/libs/LibSignature.sol",
+        "./contracts/src/features/multiplex/MultiplexFeature.sol",
+        "./contracts/src/features/multiplex/MultiplexLiquidityProvider.sol",
+        "./contracts/src/features/multiplex/MultiplexOtc.sol",
+        "./contracts/src/features/multiplex/MultiplexRfq.sol",
+        "./contracts/src/features/multiplex/MultiplexTransformERC20.sol",
+        "./contracts/src/features/multiplex/MultiplexUniswapV2.sol",
+        "./contracts/src/features/multiplex/MultiplexUniswapV3.sol",
+        "./contracts/src/features/native_orders/NativeOrdersCancellation.sol",
+        "./contracts/src/features/native_orders/NativeOrdersInfo.sol",
+        "./contracts/src/features/native_orders/NativeOrdersProtocolFees.sol",
+        "./contracts/src/features/native_orders/NativeOrdersSettlement.sol",
+        "./contracts/src/features/nft_orders/ERC1155OrdersFeature.sol",
+        "./contracts/src/features/nft_orders/ERC721OrdersFeature.sol",
+        "./contracts/src/features/nft_orders/NFTOrders.sol",
+        "./contracts/src/fixins/FixinCommon.sol",
+        "./contracts/src/fixins/FixinEIP712.sol",
+        "./contracts/src/fixins/FixinERC1155Spender.sol",
+        "./contracts/src/fixins/FixinERC721Spender.sol",
+        "./contracts/src/fixins/FixinProtocolFees.sol",
+        "./contracts/src/fixins/FixinReentrancyGuard.sol",
+        "./contracts/src/fixins/FixinTokenSpender.sol",
+        "./contracts/src/liquidity-providers/CurveLiquidityProvider.sol",
+        "./contracts/src/liquidity-providers/MooniswapLiquidityProvider.sol",
+        "./contracts/src/migrations/FullMigration.sol",
+        "./contracts/src/migrations/InitialMigration.sol",
+        "./contracts/src/migrations/LibBootstrap.sol",
+        "./contracts/src/migrations/LibMigrate.sol",
+        "./contracts/src/storage/LibERC1155OrdersStorage.sol",
+        "./contracts/src/storage/LibERC721OrdersStorage.sol",
+        "./contracts/src/storage/LibMetaTransactionsStorage.sol",
+        "./contracts/src/storage/LibNativeOrdersStorage.sol",
+        "./contracts/src/storage/LibOtcOrdersStorage.sol",
+        "./contracts/src/storage/LibOwnableStorage.sol",
+        "./contracts/src/storage/LibProxyStorage.sol",
+        "./contracts/src/storage/LibReentrancyGuardStorage.sol",
+        "./contracts/src/storage/LibSimpleFunctionRegistryStorage.sol",
+        "./contracts/src/storage/LibStorage.sol",
+        "./contracts/src/storage/LibTransformERC20Storage.sol",
+        "./contracts/src/transformers/AffiliateFeeTransformer.sol",
+        "./contracts/src/transformers/FillQuoteTransformer.sol",
+        "./contracts/src/transformers/IERC20Transformer.sol",
+        "./contracts/src/transformers/LibERC20Transformer.sol",
+        "./contracts/src/transformers/LogMetadataTransformer.sol",
+        "./contracts/src/transformers/PayTakerTransformer.sol",
+        "./contracts/src/transformers/PositiveSlippageFeeTransformer.sol",
+        "./contracts/src/transformers/Transformer.sol",
+        "./contracts/src/transformers/WethTransformer.sol",
+        "./contracts/src/transformers/bridges/AbstractBridgeAdapter.sol",
+        "./contracts/src/transformers/bridges/AvalancheBridgeAdapter.sol",
+        "./contracts/src/transformers/bridges/BSCBridgeAdapter.sol",
+        "./contracts/src/transformers/bridges/BridgeProtocols.sol",
+        "./contracts/src/transformers/bridges/CeloBridgeAdapter.sol",
+        "./contracts/src/transformers/bridges/EthereumBridgeAdapter.sol",
+        "./contracts/src/transformers/bridges/FantomBridgeAdapter.sol",
+        "./contracts/src/transformers/bridges/IBridgeAdapter.sol",
+        "./contracts/src/transformers/bridges/OptimismBridgeAdapter.sol",
+        "./contracts/src/transformers/bridges/PolygonBridgeAdapter.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinAaveV2.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinBalancer.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinBalancerV2.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinBalancerV2Batch.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinBancor.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinBancorV3.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinCompound.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinCryptoCom.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinCurve.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinCurveV2.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinDodo.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinDodoV2.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinGMX.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinKyberDmm.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinLido.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinMStable.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinMakerPSM.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinMooniswap.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinNerve.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinPlatypus.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinShell.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinSynthetix.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinUniswap.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinUniswapV2.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinUniswapV3.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinVelodrome.sol",
+        "./contracts/src/transformers/bridges/mixins/MixinZeroExBridge.sol",
+        "./contracts/src/vendor/IERC1155Token.sol",
+        "./contracts/src/vendor/IERC721Token.sol",
+        "./contracts/src/vendor/IFeeRecipient.sol",
+        "./contracts/src/vendor/ILiquidityProvider.sol",
+        "./contracts/src/vendor/IMooniswapPool.sol",
+        "./contracts/src/vendor/IPropertyValidator.sol",
+        "./contracts/src/vendor/ITakerCallback.sol",
+        "./contracts/src/vendor/IUniswapV2Pair.sol",
+        "./contracts/src/vendor/IUniswapV3Pool.sol",
+        "./contracts/src/vendor/v3/IERC20Bridge.sol",
+        "./contracts/src/vendor/v3/IStaking.sol",
+        "./contracts/test/ITestSimpleFunctionRegistryFeature.sol",
+        "./contracts/test/TestBridge.sol",
+        "./contracts/test/TestCallTarget.sol",
+        "./contracts/test/TestDelegateCaller.sol",
+        "./contracts/test/TestFeeCollectorController.sol",
+        "./contracts/test/TestFeeRecipient.sol",
+        "./contracts/test/TestFillQuoteTransformerBridge.sol",
+        "./contracts/test/TestFillQuoteTransformerExchange.sol",
+        "./contracts/test/TestFillQuoteTransformerHost.sol",
+        "./contracts/test/TestFixinProtocolFees.sol",
+        "./contracts/test/TestFixinTokenSpender.sol",
+        "./contracts/test/TestFullMigration.sol",
+        "./contracts/test/TestInitialMigration.sol",
+        "./contracts/test/TestLibNativeOrder.sol",
+        "./contracts/test/TestLibSignature.sol",
+        "./contracts/test/TestMetaTransactionsNativeOrdersFeature.sol",
+        "./contracts/test/TestMetaTransactionsTransformERC20Feature.sol",
+        "./contracts/test/TestMigrator.sol",
+        "./contracts/test/TestMintTokenERC20Transformer.sol",
+        "./contracts/test/TestNFTOrderPresigner.sol",
+        "./contracts/test/TestNativeOrdersFeature.sol",
+        "./contracts/test/TestNoEthRecipient.sol",
+        "./contracts/test/TestOrderSignerRegistryWithContractWallet.sol",
+        "./contracts/test/TestPermissionlessTransformerDeployerSuicidal.sol",
+        "./contracts/test/TestPermissionlessTransformerDeployerTransformer.sol",
+        "./contracts/test/TestPropertyValidator.sol",
+        "./contracts/test/TestRfqOriginRegistration.sol",
+        "./contracts/test/TestSimpleFunctionRegistryFeatureImpl1.sol",
+        "./contracts/test/TestSimpleFunctionRegistryFeatureImpl2.sol",
+        "./contracts/test/TestStaking.sol",
+        "./contracts/test/TestTransformERC20.sol",
+        "./contracts/test/TestTransformerBase.sol",
+        "./contracts/test/TestTransformerDeployerTransformer.sol",
+        "./contracts/test/TestTransformerHost.sol",
+        "./contracts/test/TestUniswapV3Feature.sol",
+        "./contracts/test/TestWethTransformerHost.sol",
+        "./contracts/test/TestZeroExFeature.sol",
+        "./contracts/test/integration/TestCurve.sol",
+        "./contracts/test/integration/TestLiquidityProvider.sol",
+        "./contracts/test/integration/TestMooniswap.sol",
+        "./contracts/test/integration/TestUniswapV2Factory.sol",
+        "./contracts/test/integration/TestUniswapV2Pool.sol",
+        "./contracts/test/integration/TestUniswapV3Factory.sol",
+        "./contracts/test/integration/TestUniswapV3Pool.sol",
+        "./contracts/test/tokens/TestMintableERC1155Token.sol",
+        "./contracts/test/tokens/TestMintableERC20Token.sol",
+        "./contracts/test/tokens/TestMintableERC721Token.sol",
+        "./contracts/test/tokens/TestTokenSpenderERC20Token.sol",
+        "./contracts/test/tokens/TestWeth.sol"
+    ],
     "useDockerisedSolc": false,
     "isOfflineMode": false,
     "shouldSaveStandardInput": true,

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

@@ -35,6 +35,9 @@ import "./interfaces/IOtcOrdersFeature.sol";
 import "./libs/LibNativeOrder.sol";
 import "./libs/LibSignature.sol";
 
+import "forge-std/console.sol";
+
+
 
 /// @dev Feature for interacting with OTC orders.
 contract OtcOrdersFeature is
@@ -76,6 +79,7 @@ contract OtcOrdersFeature is
         _registerFeatureFunction(this.fillTakerSignedOtcOrderForEth.selector);
         _registerFeatureFunction(this.fillTakerSignedOtcOrder.selector);
         _registerFeatureFunction(this.batchFillTakerSignedOtcOrders.selector);
+        _registerFeatureFunction(this.matchOtcOrders.selector);
         _registerFeatureFunction(this._fillOtcOrder.selector);
         _registerFeatureFunction(this.getOtcOrderInfo.selector);
         _registerFeatureFunction(this.getOtcOrderHash.selector);
@@ -364,6 +368,95 @@ contract OtcOrdersFeature is
                 )
             );
         }
+    }
+
+    function matchOtcOrders(
+        LibNativeOrder.OtcOrder calldata takerOrder,
+        LibSignature.Signature calldata takerSignature,
+        MatchingRfqLiquidity[] calldata rfqLiquidity
+    )
+        external 
+        override
+    {
+        // Validate the takerOrder
+        LibNativeOrder.OtcOrderInfo memory takerOrderInfo = getOtcOrderInfo(takerOrder);
+        _validateOtcOrder(
+            takerOrder, 
+            takerOrderInfo,
+            takerSignature,
+            takerOrder.taker
+        );
+        // {
+        //     address taker = LibSignature.getSignerOfHash(
+        //         getOtcOrderInfo(takerOrder).orderHash,
+        //         takerSignature
+        //     );
+        //     require(taker == takerOrder.maker, "Signer of the takerOrder is incorrect");
+        // }
+
+        // price in terms of maker token per taker token
+        uint128 takerPrice = takerOrder.takerAmount * 1000 / takerOrder.makerAmount; 
+        uint128 takerAmountToFill = takerOrder.makerAmount;
+
+        for (uint256 i = 0; i != rfqLiquidity.length; i++) {
+            LibNativeOrder.OtcOrder calldata makerOrder = rfqLiquidity[i].makerOrder;
+            require(takerOrder.makerToken == makerOrder.takerToken && 
+                takerOrder.takerToken == makerOrder.makerToken, "orders do not match");
+
+            // Validate the maker
+            {
+                address maker = LibSignature.getSignerOfHash(
+                    getOtcOrderInfo(makerOrder).orderHash,
+                    rfqLiquidity[i].makerSignature
+                );
+                require(maker == takerOrder.maker, "Signer of the makerOrder is not maker");
+            }
+
+            // Find the midpoint amounts
+            // TODO - logic will be different for buy and sell amount targets - or we can only support one side :(
+            uint128 makerAmount;
+            uint128 takerAmount = LibSafeMathV06.min128(
+                takerAmountToFill, 
+                makerOrder.takerAmount
+            );
+            {
+                uint128 makerPrice = makerOrder.makerAmount * 1000 / makerOrder.takerAmount;
+                require(takerPrice <= makerPrice, "maker price is less than taker price");
+                uint128 midpointPrice = (takerPrice + makerPrice) / 2; // TODO make this safe
+                // console.log("takerPrice");
+                // console.log(takerPrice);
+                // console.log("makerPrice");
+                // console.log(makerPrice);
+                // console.log("midpointPrice");
+                // console.log(midpointPrice);
+                makerAmount = (takerAmount * midpointPrice) / 1000;
+            }
+
+
+
+
+            // // TODO - scale the taker amount to the maker amount
+            // uint128 takerTokenFillAmount = takerOrder.makerAmount;
+            // uint128 makerTokenFillAmount = makerOrder.makerAmount;
+
+            takerAmountToFill -= takerAmount; // TODO is this safe? is there a re-entrancy attack vector here?
+            address taker = takerOrder.maker;
+            _matchSettleOtcOrder(
+                takerOrder,
+                makerOrder,
+                takerAmount,
+                makerAmount,
+                taker,
+                taker
+                // takerOrder.maker,
+                // takerOrder.maker
+            );
+        }
+
+
+
+
+
     }
 
     /// @dev Fill an OTC order for up to `takerTokenFillAmount` taker tokens.
@@ -433,6 +526,7 @@ contract OtcOrdersFeature is
     {
         // Must be fillable.
         if (orderInfo.status != LibNativeOrder.OrderStatus.FILLABLE) {
+            console.log("OrderNotFillable");
             LibNativeOrdersRichErrors.OrderNotFillableError(
                 orderInfo.orderHash,
                 uint8(orderInfo.status)
@@ -441,6 +535,7 @@ contract OtcOrdersFeature is
 
         // Must be a valid taker for the order.
         if (order.taker != address(0) && order.taker != taker) {
+            console.log("OrderNotFillableByTaker");
             LibNativeOrdersRichErrors.OrderNotFillableByTakerError(
                 orderInfo.orderHash,
                 taker,
@@ -456,6 +551,9 @@ contract OtcOrdersFeature is
             order.txOrigin != tx.origin &&
             !stor.originRegistry[order.txOrigin][tx.origin]
         ) {
+            console.log("OrderNotFillableByOrigin");
+            console.log(tx.origin);
+            console.log(order.txOrigin);
             LibNativeOrdersRichErrors.OrderNotFillableByOriginError(
                 orderInfo.orderHash,
                 tx.origin,
@@ -469,6 +567,9 @@ contract OtcOrdersFeature is
             makerSigner != order.maker &&
             !stor.orderSignerRegistry[order.maker][makerSigner]
         ) {
+            console.log("OrderNotSignedByMaker");
+            console.log(makerSigner);
+            console.log(order.maker);
             LibNativeOrdersRichErrors.OrderNotSignedByMakerError(
                 orderInfo.orderHash,
                 makerSigner,
@@ -552,6 +653,104 @@ contract OtcOrdersFeature is
         );
     }
 
+
+    /// @dev Match two OTC orders and settle.
+    /// @param takerOrder The taker's OTC order.
+    /// @param makerOrder The maker's OTC order.
+    /// @param takerTokenFillAmount Maximum taker token amount to fill this
+    ///        order with.
+    /// @param payer The address holding the taker tokens.
+    /// @param recipient The recipient of the maker tokens.
+    /// @return takerTokenFilledAmount How much taker token was filled.
+    /// @return makerTokenFilledAmount How much maker token was filled.
+    function _matchSettleOtcOrder(
+        LibNativeOrder.OtcOrder memory takerOrder,
+        LibNativeOrder.OtcOrder memory makerOrder,
+        uint128 takerTokenFillAmount,
+        uint128 makerTokenFillAmount,
+        address payer,
+        address recipient
+    )
+        private
+        returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount)
+    {
+        // Handle the takerOrder (should only be done once at the end....)
+        {
+            // Unpack nonce fields
+            uint64 nonceBucket = uint64(takerOrder.expiryAndNonce >> 128);
+            uint128 nonce = uint128(takerOrder.expiryAndNonce);
+            // Update tx origin nonce for the order
+            LibOtcOrdersStorage.getStorage().txOriginNonces
+                [takerOrder.txOrigin][nonceBucket] = nonce;
+        }
+
+        // Handle the makerOrder
+        {
+            // Unpack nonce fields
+            uint64 nonceBucket = uint64(makerOrder.expiryAndNonce >> 128);
+            uint128 nonce = uint128(makerOrder.expiryAndNonce);
+            // Update tx origin nonce for the order
+            LibOtcOrdersStorage.getStorage().txOriginNonces
+                [makerOrder.txOrigin][nonceBucket] = nonce;
+        }
+
+        address maker = makerOrder.maker;
+        address taker = takerOrder.maker;
+        console.log("transfer between");
+        console.log(maker);
+        console.log(taker);
+        IERC20TokenV06 makerToken = makerOrder.makerToken;
+        IERC20TokenV06 takerToken = takerOrder.makerToken;
+
+        // TODO
+        // validate the orders are both good (i.e. going in opposite directions)
+
+        // TODO: do we need to do this here, or should it be done outside?
+        // if (takerTokenFillAmount == order.takerAmount) {
+        //     takerTokenFilledAmount = order.takerAmount;
+        //     makerTokenFilledAmount = order.makerAmount;
+        // } else {
+        //     // Clamp the taker token fill amount to the fillable amount.
+        //     takerTokenFilledAmount = LibSafeMathV06.min128(
+        //         takerTokenFillAmount,
+        //         order.takerAmount
+        //     );
+        //     // Compute the maker token amount.
+        //     // This should never overflow because the values are all clamped to
+        //     // (2^128-1).
+        //     makerTokenFilledAmount = uint128(LibMathV06.getPartialAmountFloor(
+        //         uint256(takerTokenFilledAmount),
+        //         uint256(order.takerAmount),
+        //         uint256(order.makerAmount)
+        //     ));
+        // }
+
+
+        if (payer == address(this)) {
+            // Transfer this -> maker.
+            _transferERC20Tokens(
+                takerToken,
+                taker,
+                takerTokenFilledAmount
+            );                
+        } else {
+            // Transfer taker -> maker
+            _transferERC20TokensFrom(
+                takerToken,
+                payer,
+                maker,
+                takerTokenFillAmount
+            );
+        }
+        // Transfer maker -> recipient 
+        _transferERC20TokensFrom(
+            makerToken,
+            maker,
+            recipient,
+            makerTokenFillAmount
+        );
+    }
+
     /// @dev Get the order info for an OTC order.
     /// @param order The OTC order.
     /// @return orderInfo Info about the order.
@@ -577,12 +776,14 @@ contract OtcOrdersFeature is
             [order.txOrigin]
             [nonceBucket];
         if (nonce <= lastNonce) {
+            console.log("tx origin nonce is invalid");
             orderInfo.status = LibNativeOrder.OrderStatus.INVALID;
             return orderInfo;
         }
 
         // Check for expiration.
         if (expiry <= uint64(block.timestamp)) {
+            console.log("expired");
             orderInfo.status = LibNativeOrder.OrderStatus.EXPIRED;
             return orderInfo;
         }

contracts/zero-ex/contracts/src/features/interfaces/IOtcOrdersFeature.sol

@@ -42,6 +42,13 @@ interface IOtcOrdersFeature {
         uint128 makerTokenFilledAmount,
         uint128 takerTokenFilledAmount
     );
+    
+    struct MatchingRfqLiquidity {
+        LibNativeOrder.OtcOrder makerOrder;
+        LibSignature.Signature makerSignature;
+        uint128 settlementTakerAmount; // <= makerOrder.takerAmount
+        uint128 settlementMakerAmount; // <= makerOrder.makerAmount
+    }
 
     /// @dev Fill an OTC order for up to `takerTokenFillAmount` taker tokens.
     /// @param order The OTC order.
@@ -133,6 +140,14 @@ interface IOtcOrdersFeature {
         external
         returns (bool[] memory successes);
 
+    function matchOtcOrders(
+        LibNativeOrder.OtcOrder memory takerOrder,
+        LibSignature.Signature memory takerSignature,
+        MatchingRfqLiquidity[] calldata rfqLiquidity
+        // IBridgeAdapter.BridgeOrder[] calldata ammLiquidity // TODO
+    )
+        external;
+
     /// @dev Fill an OTC order for up to `takerTokenFillAmount` taker tokens.
     ///      Internal variant.
     /// @param order The OTC order.

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

@@ -313,7 +313,7 @@ contract FillQuoteTransformer is
         if (success) {
             results.makerTokenBoughtAmount = abi.decode(resultData, (uint256));
             results.takerTokenSoldAmount = takerTokenFillAmount;
-        }
+        } 
     }
 
     // Fill a single limit order.

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

@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
+pragma experimental ABIEncoderV2;
+
+import "./IBridgeAdapter.sol";
+
+abstract contract AbstractBridgeAdapter is IBridgeAdapter {
+
+    constructor(
+        uint256 expectedChainId, 
+        string memory expectedChainName
+    )
+        public
+    {
+        uint256 chainId;
+        assembly { chainId := chainid() }
+        // Allow testing on Ganache
+        if (chainId != expectedChainId && chainId != 1337) {
+            revert(string(abi.encodePacked(expectedChainName, "BridgeAdapter.constructor: wrong chain ID")));
+        }
+    }
+
+    function isSupportedSource(bytes32 source)
+        external
+        override
+        returns (bool isSupported)
+    {
+        BridgeOrder memory placeholderOrder;
+        placeholderOrder.source = source;
+        IERC20TokenV06 placeholderToken = IERC20TokenV06(address(0));
+        
+        (, isSupported) = _trade(
+            placeholderOrder,
+            placeholderToken,
+            placeholderToken,
+            0,
+            true
+        );
+    }
+
+    function trade(
+        BridgeOrder memory order,
+        IERC20TokenV06 sellToken,
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount
+    )
+        public
+        override
+        returns (uint256 boughtAmount)
+    {
+        (boughtAmount, ) = _trade(
+            order,
+            sellToken,
+            buyToken,
+            sellAmount,
+            false
+        );
+    }
+
+    function _trade(
+        BridgeOrder memory order,
+        IERC20TokenV06 sellToken,
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bool dryRun
+    )
+        internal
+        virtual
+        returns (uint256 boughtAmount, bool supportedSource);
+}

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

@@ -0,0 +1,151 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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 "./AbstractBridgeAdapter.sol";
+import "./BridgeProtocols.sol";
+import "./mixins/MixinCurve.sol";
+import "./mixins/MixinCurveV2.sol";
+import "./mixins/MixinGMX.sol";
+import "./mixins/MixinKyberDmm.sol";
+import "./mixins/MixinAaveV2.sol";
+import "./mixins/MixinNerve.sol";
+import "./mixins/MixinPlatypus.sol";
+import "./mixins/MixinUniswapV2.sol";
+import "./mixins/MixinWOOFi.sol";
+import "./mixins/MixinZeroExBridge.sol";
+
+contract AvalancheBridgeAdapter is
+    AbstractBridgeAdapter(43114, "Avalanche"),
+    MixinCurve,
+    MixinCurveV2,
+    MixinGMX,
+    MixinKyberDmm,
+    MixinAaveV2,
+    MixinNerve,
+    MixinPlatypus,
+    MixinUniswapV2,
+    MixinWOOFi,
+    MixinZeroExBridge
+{
+    constructor(IEtherTokenV06 weth)
+        public
+        MixinCurve(weth)
+    {}
+
+    function _trade(
+        BridgeOrder memory order,
+        IERC20TokenV06 sellToken,
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bool dryRun
+    )
+        internal
+        override
+        returns (uint256 boughtAmount, bool supportedSource)
+    {
+        uint128 protocolId = uint128(uint256(order.source) >> 128);
+        if (protocolId == BridgeProtocols.CURVE) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeCurve(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.CURVEV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeCurveV2(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.UNISWAPV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeUniswapV2(
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.NERVE) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeNerve(
+                sellToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.KYBERDMM) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeKyberDmm(
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.AAVEV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeAaveV2(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.GMX) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeGMX(
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.PLATYPUS) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradePlatypus(
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.WOOFI) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeWOOFi(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.UNKNOWN) {
+            if (dryRun) { return (0, true); }            
+            boughtAmount = _tradeZeroExBridge(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        }
+
+        emit BridgeFill(
+            order.source,
+            sellToken,
+            buyToken,
+            sellAmount,
+            boughtAmount
+        );
+    }
+}

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

@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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 "./AbstractBridgeAdapter.sol";
+import "./BridgeProtocols.sol";
+import "./mixins/MixinCurve.sol";
+import "./mixins/MixinDodo.sol";
+import "./mixins/MixinDodoV2.sol";
+import "./mixins/MixinKyberDmm.sol";
+import "./mixins/MixinMooniswap.sol";
+import "./mixins/MixinNerve.sol";
+import "./mixins/MixinUniswapV2.sol";
+import "./mixins/MixinWOOFi.sol";
+import "./mixins/MixinZeroExBridge.sol";
+
+contract BSCBridgeAdapter is
+    AbstractBridgeAdapter(56, "BSC"),
+    MixinCurve,
+    MixinDodo,
+    MixinDodoV2,
+    MixinKyberDmm,
+    MixinMooniswap,
+    MixinNerve,
+    MixinUniswapV2,
+    MixinWOOFi,
+    MixinZeroExBridge
+{
+    constructor(IEtherTokenV06 weth)
+        public
+        MixinCurve(weth)
+        MixinMooniswap(weth)
+    {}
+
+    function _trade(
+        BridgeOrder memory order,
+        IERC20TokenV06 sellToken,
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bool dryRun
+    )
+        internal
+        override
+        returns (uint256 boughtAmount, bool supportedSource)
+    {
+        uint128 protocolId = uint128(uint256(order.source) >> 128);
+        if (protocolId == BridgeProtocols.CURVE) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeCurve(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.UNISWAPV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeUniswapV2(
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.MOONISWAP) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeMooniswap(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.DODO) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeDodo(
+                sellToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.DODOV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeDodoV2(
+                sellToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.NERVE) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeNerve(
+                sellToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.KYBERDMM) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeKyberDmm(
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.WOOFI) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeWOOFi(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.UNKNOWN) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeZeroExBridge(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        }
+
+        emit BridgeFill(
+            order.source,
+            sellToken,
+            buyToken,
+            sellAmount,
+            boughtAmount
+        );
+    }
+}

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

@@ -32,16 +32,16 @@ library BridgeProtocols {
     uint128 internal constant UNISWAPV2       = 2;
     uint128 internal constant UNISWAP         = 3;
     uint128 internal constant BALANCER        = 4;
-    uint128 internal constant KYBER           = 5;
+    uint128 internal constant KYBER           = 5;  // Not used: deprecated.
     uint128 internal constant MOONISWAP       = 6;
     uint128 internal constant MSTABLE         = 7;
-    uint128 internal constant OASIS           = 8;
+    uint128 internal constant OASIS           = 8;  // Not used: deprecated.
     uint128 internal constant SHELL           = 9;
     uint128 internal constant DODO            = 10;
     uint128 internal constant DODOV2          = 11;
     uint128 internal constant CRYPTOCOM       = 12;
     uint128 internal constant BANCOR          = 13;
-    uint128 internal constant COFIX           = 14;
+    uint128 internal constant COFIX           = 14; // Not used: deprecated.
     uint128 internal constant NERVE           = 15;
     uint128 internal constant MAKERPSM        = 16;
     uint128 internal constant BALANCERV2      = 17;
@@ -55,4 +55,8 @@ library BridgeProtocols {
     uint128 internal constant BALANCERV2BATCH = 25;
     uint128 internal constant GMX             = 26;
     uint128 internal constant PLATYPUS        = 27;
+    uint128 internal constant BANCORV3        = 28;
+    uint128 internal constant VELODROME       = 29;
+    uint128 internal constant SYNTHETIX       = 30;
+    uint128 internal constant WOOFI           = 31;
 }

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

@@ -0,0 +1,84 @@
+
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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 "./AbstractBridgeAdapter.sol";
+import "./BridgeProtocols.sol";
+import "./mixins/MixinNerve.sol";
+import "./mixins/MixinUniswapV2.sol";
+import "./mixins/MixinZeroExBridge.sol";
+
+contract CeloBridgeAdapter is
+    AbstractBridgeAdapter(42220, "Celo"),
+    MixinNerve,
+    MixinUniswapV2,
+    MixinZeroExBridge
+{
+    constructor(address _weth)
+        public
+    {}
+
+    function _trade(
+        BridgeOrder memory order,
+        IERC20TokenV06 sellToken,
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bool dryRun
+    )
+        internal
+        override
+        returns (uint256 boughtAmount, bool supportedSource)
+    {
+        uint128 protocolId = uint128(uint256(order.source) >> 128);
+        if (protocolId == BridgeProtocols.UNISWAPV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeUniswapV2(
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.NERVE) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeNerve(
+                sellToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.UNKNOWN) {
+            if (dryRun) { return (0, true); }            
+            boughtAmount = _tradeZeroExBridge(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        }
+
+        emit BridgeFill(
+            order.source,
+            sellToken,
+            buyToken,
+            sellAmount,
+            boughtAmount
+        );
+    }
+}

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

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 /*
 
-  Copyright 2021 ZeroEx Intl.
+  Copyright 2022 ZeroEx Intl.
 
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -20,57 +20,53 @@
 pragma solidity ^0.6.5;
 pragma experimental ABIEncoderV2;
 
-import "./IBridgeAdapter.sol";
+import "./AbstractBridgeAdapter.sol";
 import "./BridgeProtocols.sol";
 import "./mixins/MixinAaveV2.sol";
 import "./mixins/MixinBalancer.sol";
 import "./mixins/MixinBalancerV2.sol";
 import "./mixins/MixinBalancerV2Batch.sol";
 import "./mixins/MixinBancor.sol";
+import "./mixins/MixinBancorV3.sol";
 import "./mixins/MixinCompound.sol";
 import "./mixins/MixinCurve.sol";
 import "./mixins/MixinCurveV2.sol";
 import "./mixins/MixinCryptoCom.sol";
 import "./mixins/MixinDodo.sol";
 import "./mixins/MixinDodoV2.sol";
-import "./mixins/MixinGMX.sol";
 import "./mixins/MixinKyberDmm.sol";
 import "./mixins/MixinLido.sol";
 import "./mixins/MixinMakerPSM.sol";
-import "./mixins/MixinMooniswap.sol";
 import "./mixins/MixinMStable.sol";
 import "./mixins/MixinNerve.sol";
-import "./mixins/MixinOasis.sol";
-import "./mixins/MixinPlatypus.sol";
 import "./mixins/MixinShell.sol";
+import "./mixins/MixinSynthetix.sol";
 import "./mixins/MixinUniswap.sol";
 import "./mixins/MixinUniswapV2.sol";
 import "./mixins/MixinUniswapV3.sol";
 import "./mixins/MixinZeroExBridge.sol";
 
-contract BridgeAdapter is
-    IBridgeAdapter,
+contract EthereumBridgeAdapter is
+    AbstractBridgeAdapter(1, "Ethereum"),
     MixinAaveV2,
     MixinBalancer,
     MixinBalancerV2,
     MixinBalancerV2Batch,
     MixinBancor,
+    MixinBancorV3,
     MixinCompound,
     MixinCurve,
     MixinCurveV2,
     MixinCryptoCom,
     MixinDodo,
     MixinDodoV2,
-    MixinGMX,
     MixinKyberDmm,
     MixinLido,
     MixinMakerPSM,
-    MixinMooniswap,
     MixinMStable,
     MixinNerve,
-    MixinOasis,
-    MixinPlatypus,
     MixinShell,
+    MixinSynthetix,
     MixinUniswap,
     MixinUniswapV2,
     MixinUniswapV3,
@@ -78,43 +74,28 @@ contract BridgeAdapter is
 {
     constructor(IEtherTokenV06 weth)
         public
-        MixinAaveV2()
-        MixinBalancer()
-        MixinBalancerV2()
         MixinBancor(weth)
+        MixinBancorV3(weth)
         MixinCompound(weth)
         MixinCurve(weth)
-        MixinCurveV2()
-        MixinCryptoCom()
-        MixinDodo()
-        MixinDodoV2()
-        MixinGMX()
         MixinLido(weth)
-        MixinMakerPSM()
-        MixinMooniswap(weth)
-        MixinMStable()
-        MixinNerve()
-        MixinOasis()
-        MixinPlatypus()
-        MixinShell()
         MixinUniswap(weth)
-        MixinUniswapV2()
-        MixinUniswapV3()
-        MixinZeroExBridge()
     {}
 
-    function trade(
+    function _trade(
         BridgeOrder memory order,
         IERC20TokenV06 sellToken,
         IERC20TokenV06 buyToken,
-        uint256 sellAmount
+        uint256 sellAmount,
+        bool dryRun
     )
-        public
+        internal
         override
-        returns (uint256 boughtAmount)
+        returns (uint256 boughtAmount, bool supportedSource)
     {
         uint128 protocolId = uint128(uint256(order.source) >> 128);
         if (protocolId == BridgeProtocols.CURVE) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeCurve(
                 sellToken,
                 buyToken,
@@ -122,6 +103,7 @@ contract BridgeAdapter is
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.CURVEV2) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeCurveV2(
                 sellToken,
                 buyToken,
@@ -129,18 +111,21 @@ contract BridgeAdapter is
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.UNISWAPV3) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeUniswapV3(
                 sellToken,
                 sellAmount,
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.UNISWAPV2) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeUniswapV2(
                 buyToken,
                 sellAmount,
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.UNISWAP) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeUniswap(
                 sellToken,
                 buyToken,
@@ -148,6 +133,7 @@ contract BridgeAdapter is
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.BALANCER) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeBalancer(
                 sellToken,
                 buyToken,
@@ -155,6 +141,7 @@ contract BridgeAdapter is
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.BALANCERV2) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeBalancerV2(
                 sellToken,
                 buyToken,
@@ -162,39 +149,29 @@ contract BridgeAdapter is
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.BALANCERV2BATCH) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeBalancerV2Batch(
                 sellAmount,
                 order.bridgeData
             );
-        }else if (protocolId == BridgeProtocols.MAKERPSM) {
+        } else if (protocolId == BridgeProtocols.MAKERPSM) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeMakerPsm(
                 sellToken,
                 buyToken,
                 sellAmount,
                 order.bridgeData
             );
-        } else if (protocolId == BridgeProtocols.MOONISWAP) {
-            boughtAmount = _tradeMooniswap(
-                sellToken,
-                buyToken,
-                sellAmount,
-                order.bridgeData
-            );
         } else if (protocolId == BridgeProtocols.MSTABLE) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeMStable(
                 sellToken,
                 buyToken,
                 sellAmount,
                 order.bridgeData
             );
-        } else if (protocolId == BridgeProtocols.OASIS) {
-            boughtAmount = _tradeOasis(
-                sellToken,
-                buyToken,
-                sellAmount,
-                order.bridgeData
-            );
         } else if (protocolId == BridgeProtocols.SHELL) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeShell(
                 sellToken,
                 buyToken,
@@ -202,42 +179,49 @@ contract BridgeAdapter is
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.DODO) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeDodo(
                 sellToken,
                 sellAmount,
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.DODOV2) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeDodoV2(
                 sellToken,
                 sellAmount,
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.CRYPTOCOM) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeCryptoCom(
                 buyToken,
                 sellAmount,
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.BANCOR) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeBancor(
                 buyToken,
                 sellAmount,
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.NERVE) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeNerve(
                 sellToken,
                 sellAmount,
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.KYBERDMM) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeKyberDmm(
                 buyToken,
                 sellAmount,
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.LIDO) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeLido(
                 sellToken,
                 buyToken,
@@ -245,6 +229,7 @@ contract BridgeAdapter is
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.AAVEV2) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeAaveV2(
                 sellToken,
                 buyToken,
@@ -252,25 +237,28 @@ contract BridgeAdapter is
                 order.bridgeData
             );
         } else if (protocolId == BridgeProtocols.COMPOUND) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeCompound(
                 sellToken,
                 buyToken,
                 sellAmount,
                 order.bridgeData
             );
-        } else if (protocolId == BridgeProtocols.GMX) {
-            boughtAmount = _tradeGMX(
+        } else if (protocolId == BridgeProtocols.BANCORV3) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeBancorV3(
                 buyToken,
                 sellAmount,
                 order.bridgeData
             );
-        } else if (protocolId == BridgeProtocols.PLATYPUS) {
-            boughtAmount = _tradePlatypus(
-                buyToken,
+        } else if (protocolId == BridgeProtocols.SYNTHETIX) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeSynthetix(
                 sellAmount,
                 order.bridgeData
             );
-        } else {
+        } else if (protocolId == BridgeProtocols.UNKNOWN) {
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeZeroExBridge(
                 sellToken,
                 buyToken,

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

@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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 "./AbstractBridgeAdapter.sol";
+import "./BridgeProtocols.sol";
+import "./mixins/MixinAaveV2.sol";
+import "./mixins/MixinBalancerV2.sol";
+import "./mixins/MixinCurve.sol";
+import "./mixins/MixinCurveV2.sol";
+import "./mixins/MixinNerve.sol";
+import "./mixins/MixinUniswapV2.sol";
+import "./mixins/MixinWOOFi.sol";
+import "./mixins/MixinZeroExBridge.sol";
+
+contract FantomBridgeAdapter is
+    AbstractBridgeAdapter(250, "Fantom"),
+    MixinAaveV2,
+    MixinBalancerV2,
+    MixinCurve,
+    MixinCurveV2,
+    MixinNerve,
+    MixinUniswapV2,
+    MixinWOOFi,
+    MixinZeroExBridge
+{
+    constructor(IEtherTokenV06 weth)
+        public
+        MixinCurve(weth)
+    {}
+
+    function _trade(
+        BridgeOrder memory order,
+        IERC20TokenV06 sellToken,
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bool dryRun
+    )
+        internal
+        override
+        returns (uint256 boughtAmount, bool supportedSource)
+    {
+        uint128 protocolId = uint128(uint256(order.source) >> 128);
+        if (protocolId == BridgeProtocols.CURVE) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeCurve(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.CURVEV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeCurveV2(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.UNISWAPV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeUniswapV2(
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.BALANCERV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeBalancerV2(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.NERVE) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeNerve(
+                sellToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.AAVEV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeAaveV2(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.WOOFI) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeWOOFi(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.UNKNOWN) {
+            if (dryRun) { return (0, true); }            
+            boughtAmount = _tradeZeroExBridge(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        }
+
+        emit BridgeFill(
+            order.source,
+            sellToken,
+            buyToken,
+            sellAmount,
+            boughtAmount
+        );
+    }
+}

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

@@ -50,6 +50,10 @@ interface IBridgeAdapter {
         uint256 outputTokenAmount
     );
 
+    function isSupportedSource(bytes32 source)
+        external
+        returns (bool isSupported);
+
     function trade(
         BridgeOrder calldata order,
         IERC20TokenV06 sellToken,

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

@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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 "./AbstractBridgeAdapter.sol";
+import "./BridgeProtocols.sol";
+import "./mixins/MixinCurve.sol";
+import "./mixins/MixinCurveV2.sol";
+import "./mixins/MixinNerve.sol";
+import "./mixins/MixinSynthetix.sol";
+import "./mixins/MixinUniswapV3.sol";
+import "./mixins/MixinVelodrome.sol";
+import "./mixins/MixinZeroExBridge.sol";
+
+contract OptimismBridgeAdapter is
+    AbstractBridgeAdapter(10, "Optimism"),
+    MixinCurve,
+    MixinCurveV2,
+    MixinNerve,
+    MixinSynthetix,
+    MixinUniswapV3,
+    MixinVelodrome,
+    MixinZeroExBridge
+{
+    constructor(IEtherTokenV06 weth)
+        public
+        MixinCurve(weth)
+    {}
+
+    function _trade(
+        BridgeOrder memory order,
+        IERC20TokenV06 sellToken,
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bool dryRun
+    )
+        internal
+        override
+        returns (uint256 boughtAmount, bool supportedSource)
+    {
+        uint128 protocolId = uint128(uint256(order.source) >> 128);
+        if (protocolId == BridgeProtocols.CURVE) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeCurve(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.CURVEV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeCurveV2(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.UNISWAPV3) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeUniswapV3(
+                sellToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.NERVE) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeNerve(
+                sellToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.VELODROME) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeVelodrome(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.SYNTHETIX) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeSynthetix(
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.UNKNOWN) {
+            if (dryRun) { return (0, true); }            
+            boughtAmount = _tradeZeroExBridge(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        }
+
+        emit BridgeFill(
+            order.source,
+            sellToken,
+            buyToken,
+            sellAmount,
+            boughtAmount
+        );
+    }
+}

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

@@ -0,0 +1,188 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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 "./AbstractBridgeAdapter.sol";
+import "./BridgeProtocols.sol";
+import "./mixins/MixinAaveV2.sol";
+import "./mixins/MixinBalancerV2.sol";
+import "./mixins/MixinBalancerV2Batch.sol";
+import "./mixins/MixinCurve.sol";
+import "./mixins/MixinCurveV2.sol";
+import "./mixins/MixinDodo.sol";
+import "./mixins/MixinDodoV2.sol";
+import "./mixins/MixinKyberDmm.sol";
+import "./mixins/MixinMStable.sol";
+import "./mixins/MixinNerve.sol";
+import "./mixins/MixinUniswapV2.sol";
+import "./mixins/MixinUniswapV3.sol";
+import "./mixins/MixinWOOFi.sol";
+import "./mixins/MixinZeroExBridge.sol";
+
+contract PolygonBridgeAdapter is
+    AbstractBridgeAdapter(137, "Polygon"),
+    MixinAaveV2,
+    MixinBalancerV2,
+    MixinBalancerV2Batch,
+    MixinCurve,
+    MixinCurveV2,
+    MixinDodo,
+    MixinDodoV2,
+    MixinKyberDmm,
+    MixinMStable,
+    MixinNerve,
+    MixinUniswapV2,
+    MixinUniswapV3,
+    MixinWOOFi,
+    MixinZeroExBridge
+{
+    constructor(IEtherTokenV06 weth)
+        public
+        MixinCurve(weth)
+    {}
+
+    function _trade(
+        BridgeOrder memory order,
+        IERC20TokenV06 sellToken,
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bool dryRun
+    )
+        internal
+        override
+        returns (uint256 boughtAmount, bool supportedSource)
+    {
+        uint128 protocolId = uint128(uint256(order.source) >> 128);
+        if (protocolId == BridgeProtocols.CURVE) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeCurve(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.CURVEV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeCurveV2(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.UNISWAPV3) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeUniswapV3(
+                sellToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.UNISWAPV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeUniswapV2(
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.BALANCERV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeBalancerV2(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.BALANCERV2BATCH) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeBalancerV2Batch(
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.MSTABLE) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeMStable(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.DODO) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeDodo(
+                sellToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.DODOV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeDodoV2(
+                sellToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.NERVE) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeNerve(
+                sellToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.KYBERDMM) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeKyberDmm(
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.AAVEV2) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeAaveV2(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.WOOFI) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeWOOFi(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        } else if (protocolId == BridgeProtocols.UNKNOWN) {
+            if (dryRun) { return (0, true); }            
+            boughtAmount = _tradeZeroExBridge(
+                sellToken,
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
+        }
+
+        emit BridgeFill(
+            order.source,
+            sellToken,
+            buyToken,
+            sellAmount,
+            boughtAmount
+        );
+    }
+}

contracts/zero-ex/contracts/src/transformers/bridges/mixins/MixinBancorV3.sol

@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: Apache-2.0
+
+/*
+
+  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 "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+
+
+/*
+    BancorV3
+*/
+interface IBancorV3 {
+    /**
+     * @dev performs a trade by providing the source amount and returns the target amount and the associated fee
+     *
+     * requirements:
+     *
+     * - the caller must be the network contract
+     */
+    function tradeBySourceAmount(
+        address sourceToken,
+        address targetToken,
+        uint256 sourceAmount,
+        uint256 minReturnAmount,
+        uint256 deadline,
+        address beneficiary
+    ) external payable returns (uint256 amount);
+}
+
+contract MixinBancorV3 {
+
+    using LibERC20TokenV06 for IERC20TokenV06;
+
+    IERC20TokenV06 constant public BANCORV3_ETH_ADDRESS =
+        IERC20TokenV06(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
+    IEtherTokenV06 private immutable WETH;
+
+    constructor(IEtherTokenV06 weth)
+        public
+    {
+        WETH = weth;
+    }
+
+    function _tradeBancorV3(
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bytes memory bridgeData
+    )
+        internal
+        returns (uint256 amountOut)
+
+    {
+        IBancorV3 router;
+        IERC20TokenV06[] memory path;
+        address[] memory _path;
+        uint256 payableAmount = 0;
+
+        {
+            (router, _path) = abi.decode(bridgeData, (IBancorV3, address[]));
+            // To get around `abi.decode()` not supporting interface array types.
+            assembly { path := _path }
+        }
+
+        require(path.length >= 2, "MixinBancorV3/PATH_LENGTH_MUST_BE_AT_LEAST_TWO");
+        require(
+            path[path.length - 1] == buyToken,
+            "MixinBancorV3/LAST_ELEMENT_OF_PATH_MUST_MATCH_OUTPUT_TOKEN"
+        );
+
+        //swap WETH->ETH as Bancor only deals in ETH
+        if(_path[0] == address(WETH)) {
+            //withdraw the sell amount of WETH for ETH
+            WETH.withdraw(sellAmount);
+            payableAmount = sellAmount;
+            // set _path[0] to the ETH address if WETH is our buy token
+            _path[0] = address(BANCORV3_ETH_ADDRESS);
+        } else {
+            // Grant the BancorV3 router an allowance to sell the first token.
+            path[0].approveIfBelow(address(router), sellAmount);
+        }
+
+        // if we are buying WETH we need to swap to ETH and deposit into WETH after the swap
+        if(_path[1] == address(WETH)){
+            _path[1] = address(BANCORV3_ETH_ADDRESS);
+        }
+
+
+        uint256 amountOut = router.tradeBySourceAmount{value: payableAmount}(
+            _path[0],
+            _path[1],
+             // Sell all tokens we hold.
+            sellAmount,
+             // Minimum buy amount.
+            1,
+            //deadline
+            block.timestamp + 1,
+            // address of the mixin
+            address(this)
+        );
+
+        // if we want to return WETH deposit the ETH amount we sold
+        if(buyToken == WETH){
+            WETH.deposit{value: amountOut}();
+        }
+
+        return amountOut;
+    }
+}

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

@@ -1,92 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-/*
-
-  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 "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
-
-
-interface ICoFiXRouter {
-    // msg.value = fee
-    function swapExactTokensForETH(
-        address token,
-        uint amountIn,
-        uint amountOutMin,
-        address to,
-        address rewardTo,
-        uint deadline
-    ) external payable returns (uint _amountIn, uint _amountOut);
-
-    // msg.value = amountIn + fee
-    function swapExactETHForTokens(
-        address token,
-        uint amountIn,
-        uint amountOutMin,
-        address to,
-        address rewardTo,
-        uint deadline
-    ) external payable returns (uint _amountIn, uint _amountOut);
-}
-
-interface ICoFiXPair {
-
-    function swapWithExact(address outToken, address to)
-        external
-        payable
-        returns (
-            uint amountIn,
-            uint amountOut,
-            uint oracleFeeChange,
-            uint256[4] memory tradeInfo
-        );
-}
-
-contract MixinCoFiX {
-
-    using LibERC20TokenV06 for IERC20TokenV06;
-
-    function _tradeCoFiX(
-        IERC20TokenV06 sellToken,
-        IERC20TokenV06 buyToken,
-        uint256 sellAmount,
-        bytes memory bridgeData
-    )
-        internal
-        returns (uint256 boughtAmount)
-    {
-        (uint256 fee, ICoFiXPair pool) = abi.decode(bridgeData, (uint256, ICoFiXPair));
-        // Transfer tokens into the pool
-        LibERC20TokenV06.compatTransfer(
-            sellToken,
-            address(pool),
-            sellAmount
-        );
-        // Call the swap exact with the tokens now in the pool
-        // pay the NEST Oracle fee with ETH
-        (/* In */, boughtAmount, , ) = pool.swapWithExact{value: fee}(
-            address(buyToken),
-            address(this)
-        );
-
-        return boughtAmount;
-    }
-}

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

@@ -1,124 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-/*
-
-  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 "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
-import "../IBridgeAdapter.sol";
-
-interface IKyberNetworkProxy {
-
-    /// @dev Sells `sellTokenAddress` tokens for `buyTokenAddress` tokens
-    /// using a hint for the reserve.
-    /// @param sellToken Token to sell.
-    /// @param sellAmount Amount of tokens to sell.
-    /// @param buyToken Token to buy.
-    /// @param recipientAddress Address to send bought tokens to.
-    /// @param maxBuyTokenAmount A limit on the amount of tokens to buy.
-    /// @param minConversionRate The minimal conversion rate. If actual rate
-    ///        is lower, trade is canceled.
-    /// @param walletId The wallet ID to send part of the fees
-    /// @param hint The hint for the selective inclusion (or exclusion) of reserves
-    /// @return boughtAmount Amount of tokens bought.
-    function tradeWithHint(
-        IERC20TokenV06 sellToken,
-        uint256 sellAmount,
-        IERC20TokenV06 buyToken,
-        address payable recipientAddress,
-        uint256 maxBuyTokenAmount,
-        uint256 minConversionRate,
-        address payable walletId,
-        bytes calldata hint
-    )
-        external
-        payable
-        returns (uint256 boughtAmount);
-}
-
-contract MixinKyber {
-
-    using LibERC20TokenV06 for IERC20TokenV06;
-
-    /// @dev Address indicating the trade is using ETH
-    IERC20TokenV06 private immutable KYBER_ETH_ADDRESS =
-        IERC20TokenV06(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
-    /// @dev Mainnet address of the WETH contract.
-    IEtherTokenV06 private immutable WETH;
-
-    constructor(IEtherTokenV06 weth)
-        public
-    {
-        WETH = weth;
-    }
-
-    function _tradeKyber(
-        IERC20TokenV06 sellToken,
-        IERC20TokenV06 buyToken,
-        uint256 sellAmount,
-        bytes memory bridgeData
-    )
-        internal
-        returns (uint256 boughtAmount)
-    {
-        (IKyberNetworkProxy kyber, bytes memory hint) =
-            abi.decode(bridgeData, (IKyberNetworkProxy, bytes));
-
-        uint256 payableAmount = 0;
-        if (sellToken != WETH) {
-            // If the input token is not WETH, grant an allowance to the exchange
-            // to spend them.
-            sellToken.approveIfBelow(
-                address(kyber),
-                sellAmount
-            );
-        } else {
-            // If the input token is WETH, unwrap it and attach it to the call.
-            payableAmount = sellAmount;
-            WETH.withdraw(payableAmount);
-        }
-
-        // Try to sell all of this contract's input token balance through
-        // `KyberNetworkProxy.trade()`.
-        boughtAmount = kyber.tradeWithHint{ value: payableAmount }(
-            // Input token.
-            sellToken == WETH ? KYBER_ETH_ADDRESS : sellToken,
-            // Sell amount.
-            sellAmount,
-            // Output token.
-            buyToken == WETH ? KYBER_ETH_ADDRESS : buyToken,
-            // Transfer to this contract
-            address(uint160(address(this))),
-            // Buy as much as possible.
-            uint256(-1),
-            // Lowest minimum conversion rate
-            1,
-            // No affiliate address.
-            address(0),
-            hint
-        );
-        // If receving ETH, wrap it to WETH.
-        if (buyToken == WETH) {
-            WETH.deposit{ value: boughtAmount }();
-        }
-        return boughtAmount;
-    }
-}

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

@@ -26,7 +26,7 @@ import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
 
 
 /// @dev Minimal interface for minting StETH
-interface ILido {
+interface IStETH {
     /// @dev Adds eth to the pool
     /// @param _referral optional address for referrals
     /// @return StETH Amount of shares generated
@@ -37,6 +37,33 @@ interface ILido {
     function getPooledEthByShares(uint256 _sharesAmount) external view returns (uint256);
 }
 
+/// @dev Minimal interface for wrapping/unwrapping stETH.
+interface IWstETH {
+
+    /**
+     * @notice Exchanges stETH to wstETH
+     * @param _stETHAmount amount of stETH to wrap in exchange for wstETH
+     * @dev Requirements:
+     *  - `_stETHAmount` must be non-zero
+     *  - msg.sender must approve at least `_stETHAmount` stETH to this
+     *    contract.
+     *  - msg.sender must have at least `_stETHAmount` of stETH.
+     * User should first approve _stETHAmount to the WstETH contract
+     * @return Amount of wstETH user receives after wrap
+     */
+    function wrap(uint256 _stETHAmount) external returns (uint256);
+
+    /**
+     * @notice Exchanges wstETH to stETH
+     * @param _wstETHAmount amount of wstETH to uwrap in exchange for stETH
+     * @dev Requirements:
+     *  - `_wstETHAmount` must be non-zero
+     *  - msg.sender must have at least `_wstETHAmount` wstETH.
+     * @return Amount of stETH user receives after unwrap
+     */
+    function unwrap(uint256 _wstETHAmount) external returns (uint256);
+}
+
 
 contract MixinLido {
     using LibERC20TokenV06 for IERC20TokenV06;
@@ -59,12 +86,43 @@ contract MixinLido {
         internal
         returns (uint256 boughtAmount)
     {
-        (ILido lido) = abi.decode(bridgeData, (ILido));
-        if (address(sellToken) == address(WETH) && address(buyToken) == address(lido)) {
+        if (address(sellToken) == address(WETH)) {
+            return _tradeStETH(buyToken, sellAmount, bridgeData);
+        } 
+
+        return _tradeWstETH(sellToken, buyToken, sellAmount, bridgeData);
+    }
+
+    function _tradeStETH(
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bytes memory bridgeData
+    ) private returns (uint256 boughtAmount) {
+        (IStETH stETH) = abi.decode(bridgeData, (IStETH));
+        if (address(buyToken) == address(stETH)) {
             WETH.withdraw(sellAmount);
-            boughtAmount = lido.getPooledEthByShares(lido.submit{ value: sellAmount}(address(0)));
-        } else {
-            revert("MixinLido/UNSUPPORTED_TOKEN_PAIR");
+            return stETH.getPooledEthByShares(stETH.submit{ value: sellAmount}(address(0)));
         }
+
+        revert("MixinLido/UNSUPPORTED_TOKEN_PAIR");
+    }
+
+    function _tradeWstETH(
+        IERC20TokenV06 sellToken,
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bytes memory bridgeData
+
+    ) private returns(uint256 boughtAmount){
+        (IEtherTokenV06 stETH, IWstETH wstETH) = abi.decode(bridgeData, (IEtherTokenV06, IWstETH));
+        if (address(sellToken) == address(stETH) && address(buyToken) == address(wstETH) ) {
+            sellToken.approveIfBelow(address(wstETH), sellAmount);
+            return wstETH.wrap(sellAmount);
+        }
+        if (address(sellToken) == address(wstETH) && address(buyToken) == address(stETH) ) {
+            return wstETH.unwrap(sellAmount);
+        }
+
+        revert("MixinLido/UNSUPPORTED_TOKEN_PAIR");
     }
 }

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

@@ -1,76 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-/*
-
-  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 "../IBridgeAdapter.sol";
-
-interface IOasis {
-
-    /// @dev Sell `sellAmount` of `sellToken` token and receive `buyToken` token.
-    /// @param sellToken The token being sold.
-    /// @param sellAmount The amount of `sellToken` token being sold.
-    /// @param buyToken The token being bought.
-    /// @param minBoughtAmount Minimum amount of `buyToken` token to buy.
-    /// @return boughtAmount Amount of `buyToken` bought.
-    function sellAllAmount(
-        IERC20TokenV06 sellToken,
-        uint256 sellAmount,
-        IERC20TokenV06 buyToken,
-        uint256 minBoughtAmount
-    )
-        external
-        returns (uint256 boughtAmount);
-}
-
-contract MixinOasis {
-
-    using LibERC20TokenV06 for IERC20TokenV06;
-
-    function _tradeOasis(
-        IERC20TokenV06 sellToken,
-        IERC20TokenV06 buyToken,
-        uint256 sellAmount,
-        bytes memory bridgeData
-    )
-        internal
-        returns (uint256 boughtAmount)
-    {
-
-        (IOasis oasis) = abi.decode(bridgeData, (IOasis));
-
-        // Grant an allowance to the exchange to spend `sellToken` token.
-        sellToken.approveIfBelow(
-            address(oasis),
-            sellAmount
-        );
-        // Try to sell all of this contract's `sellToken` token balance.
-        boughtAmount = oasis.sellAllAmount(
-            sellToken,
-            sellAmount,
-            buyToken,
-            // min fill amount
-            1
-        );
-        return boughtAmount;
-    }
-}

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

@@ -1,3 +1,22 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
 
@@ -58,7 +77,7 @@ contract MixinPlatypus {
         //keep track of the previous balance to confirm amount out
         uint256 beforeBalance = buyToken.balanceOf(address(this));
 
-        (uint256 amountOut, uint256 haircut) = router.swapTokensForTokens(
+        router.swapTokensForTokens(
             // Convert to `buyToken` along this path.
             _path,
             // pool to swap on

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

@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
+
+interface ISynthetix {
+    // Ethereum Mainnet
+    function exchangeAtomically(
+        bytes32 sourceCurrencyKey,
+        uint256 sourceAmount,
+        bytes32 destinationCurrencyKey,
+        bytes32 trackingCode,
+        uint256 minAmount
+    ) external returns (uint256 amountReceived);
+
+    // Optimism
+    function exchangeWithTracking(
+        bytes32 sourceCurrencyKey,
+        uint256 sourceAmount,
+        bytes32 destinationCurrencyKey,
+        address rewardAddress,
+        bytes32 trackingCode
+    ) external returns (uint256 amountReceived);
+}
+
+contract MixinSynthetix {
+    address private constant rewardAddress =
+        0x5C80239D97E1eB216b5c3D8fBa5DE5Be5d38e4C9;
+    bytes32 constant trackingCode =
+        0x3058000000000000000000000000000000000000000000000000000000000000;
+
+    function _tradeSynthetix(uint256 sellAmount, bytes memory bridgeData)
+        public
+        returns (uint256 boughtAmount)
+    {
+        (
+            ISynthetix synthetix,
+            bytes32 sourceCurrencyKey,
+            bytes32 destinationCurrencyKey
+        ) = abi.decode(
+                bridgeData,
+                (ISynthetix, bytes32, bytes32)
+            );
+
+        boughtAmount = exchange(
+            synthetix,
+            sourceCurrencyKey,
+            destinationCurrencyKey,
+            sellAmount
+        );
+    }
+
+    function exchange(
+        ISynthetix synthetix,
+        bytes32 sourceCurrencyKey,
+        bytes32 destinationCurrencyKey,
+        uint256 sellAmount
+    ) internal returns (uint256 boughtAmount) {
+        uint256 chainId;
+        assembly {
+            chainId := chainid()
+        }
+
+        if (chainId == 1) {
+            boughtAmount = synthetix.exchangeAtomically(
+                sourceCurrencyKey,
+                sellAmount,
+                destinationCurrencyKey,
+                trackingCode,
+                0
+            );
+        } else {
+            boughtAmount = synthetix.exchangeWithTracking(
+                sourceCurrencyKey,
+                sellAmount,
+                destinationCurrencyKey,
+                rewardAddress,
+                trackingCode
+            );
+        }
+    }
+}

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

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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";
+
+interface IVelodromeRouter {
+    function swapExactTokensForTokensSimple(
+        uint256 amountIn,
+        uint256 amountOutMin,
+        address tokenFrom,
+        address tokenTo,
+        bool stable,
+        address to,
+        uint256 deadline
+    ) external returns (uint256[] memory amounts); 
+}
+
+contract MixinVelodrome {
+    using LibERC20TokenV06 for IERC20TokenV06;
+
+    function _tradeVelodrome(
+        IERC20TokenV06 sellToken,
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bytes memory bridgeData
+    )
+        internal
+        returns (uint256 boughtAmount)
+    {
+
+        (IVelodromeRouter router, bool stable) = abi.decode(bridgeData, (IVelodromeRouter, bool));
+        sellToken.approveIfBelow(address(router), sellAmount);
+
+        boughtAmount = router.swapExactTokensForTokensSimple(
+            sellAmount,
+            0, 
+            address(sellToken),
+            address(buyToken),
+            stable,
+            address(this),
+            block.timestamp + 1
+        )[1];
+    }
+}

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

@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: Apache-2.0
+
+/*
+  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;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/v06/LibERC20TokenV06.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+import "../IBridgeAdapter.sol";
+import "@0x/contracts-utils/contracts/src/v06/LibSafeMathV06.sol";
+
+/// @dev WooFI pool interface.
+interface IWooPP {
+    function quoteToken() external view returns (address);
+
+    function sellBase(
+        address baseToken,
+        uint256 baseAmount,
+        uint256 minQuoteAmount,
+        address to,
+        address rebateTo
+    ) external returns (uint256 quoteAmount);
+
+    function sellQuote(
+        address baseToken,
+        uint256 quoteAmount,
+        uint256 minBaseAmount,
+        address to,
+        address rebateTo
+    ) external returns (uint256 baseAmount);
+
+    /// @dev Query the amount for selling the base token amount.
+    /// @param baseToken the base token to sell
+    /// @param baseAmount the amount to sell
+    /// @return quoteAmount the swapped quote amount
+    function querySellBase(
+        address baseToken, 
+        uint256 baseAmount
+    ) external view returns (uint256 quoteAmount);
+
+}
+
+contract MixinWOOFi{
+
+    using LibERC20TokenV06 for IERC20TokenV06;
+    using LibERC20TokenV06 for IEtherTokenV06;
+    using LibSafeMathV06 for uint256;
+
+    address constant rebateAddress = 0xBfdcBB4C05843163F491C24f9c0019c510786304;
+
+    // /// @dev Swaps an exact amount of input tokens for as many output tokens as possible.
+    // /// @param _amountIn Amount of input tokens to send
+    // /// @param _minAmountOut The minimum amount of output tokens that must be received for the transaction not to revert.
+    // /// @param _tokenIn Input token
+    // /// @param _tokenOut Output token
+    // /// @param _to recipient of tokens
+    // /// @param pool WOOFi pool where the swap will happen
+    function _tradeWOOFi(
+        IERC20TokenV06 sellToken,
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bytes memory bridgeData
+    )
+        public
+        returns (uint256 boughtAmount)
+    {
+        (IWooPP _pool) = abi.decode(bridgeData, (IWooPP));
+        uint256 beforeBalance = buyToken.balanceOf(address(this));
+
+        sellToken.approveIfBelow(address(_pool), sellAmount);
+        
+        _swap(
+            sellAmount,
+            address(sellToken),
+            address(buyToken),
+            _pool
+        );
+        boughtAmount = buyToken.balanceOf(address(this)).safeSub(beforeBalance);
+    }
+
+    function _swap(
+        uint _amountIn, 
+        address _tokenIn, 
+        address _tokenOut, 
+        IWooPP pool
+    ) internal {
+        address quoteToken = pool.quoteToken();
+        if (_tokenIn == quoteToken) {
+            pool.sellQuote(
+                _tokenOut,
+                _amountIn,
+                1,
+                address(this),
+                rebateAddress
+            );
+        } else if (_tokenOut == quoteToken) {
+            pool.sellBase(
+                _tokenIn, 
+                _amountIn, 
+                1, 
+                address(this), 
+                rebateAddress
+            );
+        } else {          
+            uint256 quoteAmount = pool.sellBase(
+                _tokenIn, 
+                _amountIn, 
+                0, 
+                address(this), 
+                rebateAddress
+            );
+            IERC20TokenV06(pool.quoteToken()).approveIfBelow(address(pool), quoteAmount);
+            pool.sellQuote(
+                _tokenOut, 
+                quoteAmount, 
+                1, 
+                address(this), 
+                rebateAddress
+            );
+        }
+    }
+
+}

contracts/zero-ex/contracts/test/foundry/BasicSwap.sol

@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
+pragma experimental ABIEncoderV2;
+
+import "./utils/ForkUtils.sol";
+import "./utils/TestUtils.sol";
+import "./utils/DeployZeroEx.sol";
+import "forge-std/Test.sol";
+import "src/IZeroEx.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+import "src/features/TransformERC20Feature.sol";
+import "src/external/TransformerDeployer.sol";
+import "src/transformers/WethTransformer.sol";
+import "src/transformers/FillQuoteTransformer.sol";
+import "src/transformers/bridges/BridgeProtocols.sol";
+import "src/transformers/bridges/EthereumBridgeAdapter.sol";
+import "src/IZeroEx.sol";
+
+contract BasicSwapTest is 
+    Test,
+    ForkUtils,
+    TestUtils
+{  
+    DeployZeroEx.ZeroExDeployed zeroExDeployed;
+
+    function setUp()
+        public
+    {
+        zeroExDeployed = new DeployZeroEx().deployZeroEx();
+        vm.deal(address(this), 1e19);
+    }
+
+    function testTransformERC20()
+        public
+    {
+        emit log_string("-----Preparing ETH->WETH transformation through TransformERC20()-----");
+        emit log_string("   --Building Up Transformations--");
+        ITransformERC20Feature.Transformation[] memory transformations = new ITransformERC20Feature.Transformation[](1);
+
+        emit log_named_address("    Finding TransformerDeployer nonce @", address(zeroExDeployed.transformerDeployer));
+        emit log_named_uint(
+            "       Deployer nonce",
+            _findTransformerNonce(
+            address(zeroExDeployed.transformers.wethTransformer),
+            address(zeroExDeployed.transformerDeployer)
+        ));
+        transformations[0].deploymentNonce = _findTransformerNonce(address(zeroExDeployed.transformers.wethTransformer),address(zeroExDeployed.transformerDeployer));
+        transformations[0].data = abi.encode(LibERC20Transformer.ETH_TOKEN_ADDRESS, 1e18);
+
+        emit log_string("   ---Calling TransformERC20()---");
+        uint256 balanceETHBefore = address(this).balance;
+        uint256 balanceWETHBefore = zeroExDeployed.weth.balanceOf(address(this));
+        zeroExDeployed.zeroEx.transformERC20{value: 1e18}(
+            // input token
+            IERC20TokenV06(LibERC20Transformer.ETH_TOKEN_ADDRESS),
+            // output token
+            IERC20TokenV06(address(zeroExDeployed.weth)),
+            // input token amount
+            1e18,
+            // min output token amount
+            1e18,
+            // list of transform
+            transformations
+        );
+        assert(zeroExDeployed.weth.balanceOf(address(this)) == 1e18);
+        emit log_string("       Successful Transformation Complete");
+        emit log_named_uint("           ETH BALANCE BEFORE:", balanceETHBefore);
+        emit log_named_uint("           ETH BALANCE AFTER:", address(this).balance);
+        emit log_named_uint("           WETH BALANCE BEFORE:", balanceWETHBefore);
+        emit log_named_uint("           WETH BALANCE AFTER:", zeroExDeployed.weth.balanceOf(address(this)));
+    }
+
+
+    
+}

contracts/zero-ex/contracts/test/foundry/features/OtcOrdersFeature.t.sol

@@ -0,0 +1,331 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
+pragma experimental ABIEncoderV2;
+
+
+import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
+import "src/features/OtcOrdersFeature.sol";
+import "src/features/interfaces/IOtcOrdersFeature.sol";
+import "src/features/libs/LibNativeOrder.sol";
+import "src/features/libs/LibSignature.sol";
+import "../utils/DeployZeroEx.sol";
+import "../utils/TestERC20.sol";
+
+
+contract OtcOrdersFeatureTest is DeployZeroEx {
+
+    DeployZeroEx.ZeroExDeployed zeroExDeployed;
+    uint256 MAX_INT = uint256(-1);
+    address payable internal NULL_ADDRESS = address(0);
+    uint256 internal makerPk = 0xdeadbeef;
+    uint256 internal maker2Pk = 0xd00d00;
+    uint256 internal takerPk = 0xc0ffee;
+    uint256 internal workerPk = 0xb10b;
+    address payable internal maker = payable(vm.addr(makerPk));
+    address payable internal maker2 = payable(vm.addr(maker2Pk));
+    address payable internal taker = payable(vm.addr(takerPk));
+    address payable internal worker = payable(vm.addr(workerPk));
+    TestERC20 internal token1;
+    TestERC20 internal token2;
+
+    function sign(
+      LibNativeOrder.OtcOrder memory order,
+      uint256 pk
+    ) internal 
+      returns (
+      LibSignature.Signature memory signature
+    ) {
+        (uint8 v, bytes32 r, bytes32 s) = vm.sign(pk, IZERO_EX.getOtcOrderHash(order));
+        LibSignature.Signature memory signature = LibSignature.Signature({
+          signatureType: LibSignature.SignatureType.EIP712,
+          v: v,
+          r: r,
+          s: s
+        });
+
+        return signature;
+    }
+
+    function getOrder(
+      address maker,
+      address makerToken,
+      uint128 makerAmount,
+      address taker,
+      address takerToken,
+      uint128 takerAmount
+    ) 
+      internal 
+      returns (
+        LibNativeOrder.OtcOrder memory order
+      )
+    {
+        uint256 expiry = (block.timestamp + 120) << 192;
+        uint256 bucket = 1 << 128;
+        uint256 nonce = block.timestamp;
+        uint256 expiryAndNonce = expiry | bucket | nonce;
+
+        LibNativeOrder.OtcOrder memory order = LibNativeOrder.OtcOrder({
+          maker: maker,
+          makerToken: IERC20TokenV06(makerToken),
+          makerAmount: makerAmount,
+          taker: taker,
+          takerToken: IERC20TokenV06(takerToken),
+          takerAmount: takerAmount,
+          txOrigin: worker,
+          expiryAndNonce: expiryAndNonce
+        });
+
+        return order;
+
+    }
+    
+    function getOrderAndSignature(
+      address maker,
+      address makerToken,
+      uint128 makerAmount,
+      address taker,
+      address takerToken,
+      uint128 takerAmount
+    ) 
+      internal 
+      returns (
+        LibNativeOrder.OtcOrder memory order,
+        LibSignature.Signature memory signature
+      )
+    {
+        uint256 expiry = (block.timestamp + 120) << 192;
+        uint256 bucket = 1 << 128;
+        uint256 nonce = block.timestamp;
+        uint256 expiryAndNonce = expiry | bucket | nonce;
+
+        console.log("The worker");
+        console.log(worker);
+        LibNativeOrder.OtcOrder memory order = LibNativeOrder.OtcOrder({
+          maker: maker,
+          makerToken: IERC20TokenV06(makerToken),
+          makerAmount: makerAmount,
+          taker: taker,
+          takerToken: IERC20TokenV06(takerToken),
+          takerAmount: takerAmount,
+          txOrigin: worker,
+          expiryAndNonce: expiryAndNonce
+        });
+
+        // sign
+        LibSignature.Signature memory signature = sign(order, takerPk);
+        // (uint8 v, bytes32 r, bytes32 s) = vm.sign(takerPk, IZERO_EX.getOtcOrderHash(order));
+        // LibSignature.Signature memory signature = LibSignature.Signature({
+        //   signatureType: LibSignature.SignatureType.EIP712,
+        //   v: v,
+        //   r: r,
+        //   s: s
+        // });
+
+        return (order, signature);
+
+    }
+
+    function setUp() public {
+        zeroExDeployed = deployZeroEx();
+        // WETH wrapping and unwrapping is not going to work at this address
+        IEtherTokenV06 WETH = IEtherTokenV06(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2);
+        OtcOrdersFeature otcOrdersFeature = new OtcOrdersFeature(address(ZERO_EX), WETH);
+        IZERO_EX.migrate(address(otcOrdersFeature), abi.encodePacked(otcOrdersFeature.migrate.selector), address(this));
+
+        // Deploy some tokens
+        token1 = new TestERC20();
+        token2 = new TestERC20();
+
+        // Mint 
+        token1.mint(maker, 1000);
+        token2.mint(maker, 1000);
+
+        token1.mint(maker2, 1000);
+        token2.mint(maker2, 1000);
+
+        token1.mint(taker, 1000);
+        token2.mint(taker, 1000);
+
+        // Set Approvals
+        vm.startPrank(maker);
+        token1.approve(address(ZERO_EX), MAX_INT);
+        token2.approve(address(ZERO_EX), MAX_INT);
+        vm.stopPrank();
+
+        vm.startPrank(maker2);
+        token1.approve(address(ZERO_EX), MAX_INT);
+        token2.approve(address(ZERO_EX), MAX_INT);
+        vm.stopPrank();
+
+        vm.startPrank(taker);
+        token1.approve(address(ZERO_EX), MAX_INT);
+        token2.approve(address(ZERO_EX), MAX_INT);
+        vm.stopPrank();
+    }
+
+    function testFillTakerSignedOtcOrderSimple() external {
+        LibNativeOrder.OtcOrder memory order = getOrder(
+            maker,
+            address(token2),
+            100,
+            NULL_ADDRESS,
+            address(token1),
+            100
+        );
+
+        console.log("maker and taker");
+        console.log(maker);
+        console.log(taker);
+        LibSignature.Signature memory makerSignature = sign(order, makerPk);
+        LibSignature.Signature memory takerSignature = sign(order, takerPk);
+
+
+
+
+        // When
+        vm.prank(worker, worker); // set the tx.origin
+        IZERO_EX.fillTakerSignedOtcOrder(order, makerSignature, takerSignature);
+
+        // Then
+        assertEq(token1.balanceOf(taker), 900);
+        assertEq(token2.balanceOf(taker), 1100);
+        assertEq(token1.balanceOf(maker), 1100);
+        assertEq(token2.balanceOf(maker), 900);
+    }
+
+
+    function testMatchTakerToOneMaker() external {
+        // The Taker is the maker for this order
+        (
+          LibNativeOrder.OtcOrder memory takerOrder,
+          LibSignature.Signature memory takerSignature
+        ) = getOrderAndSignature(
+            taker,
+            address(token1),
+            100,
+            NULL_ADDRESS,
+            address(token2),
+            100
+        );
+
+        (
+          LibNativeOrder.OtcOrder memory makerOrder,
+          LibSignature.Signature memory makerSignature
+        ) = getOrderAndSignature(
+            maker,
+            address(token2),
+            100,
+            NULL_ADDRESS,
+            address(token1),
+            100
+        );
+          
+        IOtcOrdersFeature.MatchingRfqLiquidity[] memory rfqLiquidity = new IOtcOrdersFeature.MatchingRfqLiquidity[](1);
+        rfqLiquidity[0] = IOtcOrdersFeature.MatchingRfqLiquidity({
+          makerOrder: makerOrder,
+          makerSignature: makerSignature,
+          settlementTakerAmount: 100,
+          settlementMakerAmount: 100
+        });
+
+
+        // When
+        vm.prank(worker, worker); // set the tx.origin
+        IZERO_EX.matchOtcOrders(takerOrder, takerSignature, rfqLiquidity);
+
+        // Then
+        assertEq(token1.balanceOf(taker), 900);
+        assertEq(token2.balanceOf(taker), 1100);
+        assertEq(token1.balanceOf(maker), 1100);
+        assertEq(token2.balanceOf(maker), 900);
+    }
+
+    function testMatchTakerToManyMakers() external {
+        // The taker is the maker for this order
+        (
+          LibNativeOrder.OtcOrder memory takerOrder,
+          LibSignature.Signature memory takerSignature
+        ) = getOrderAndSignature(
+            taker,
+            address(token1),
+            100,
+            NULL_ADDRESS,
+            address(token2),
+            100
+        );
+
+        // Maker Order #1 (best price, but cannot cover full amount)
+        (
+          LibNativeOrder.OtcOrder memory makerOrder,
+          LibSignature.Signature memory makerSignature
+        ) = getOrderAndSignature(
+            maker,
+            address(token2),
+            84,
+            NULL_ADDRESS,
+            address(token1),
+            80
+        );
+
+        // Maker Order #2
+        (
+          LibNativeOrder.OtcOrder memory maker2Order,
+          LibSignature.Signature memory maker2Signature
+        ) = getOrderAndSignature(
+            maker2,
+            address(token2),
+            100,
+            NULL_ADDRESS,
+            address(token1),
+            100
+        );
+          
+        IOtcOrdersFeature.MatchingRfqLiquidity[] memory rfqLiquidity = new IOtcOrdersFeature.MatchingRfqLiquidity[](2);
+        rfqLiquidity[0] = IOtcOrdersFeature.MatchingRfqLiquidity({
+          makerOrder: makerOrder,
+          makerSignature: makerSignature,
+          settlementTakerAmount: 100,
+          settlementMakerAmount: 100
+        });
+
+        rfqLiquidity[1] = IOtcOrdersFeature.MatchingRfqLiquidity({
+          makerOrder: maker2Order,
+          makerSignature: maker2Signature,
+          settlementTakerAmount: 100,
+          settlementMakerAmount: 100
+        });
+
+
+        // When
+        vm.prank(worker, worker); // set the tx.origin
+        IZERO_EX.matchOtcOrders(takerOrder, takerSignature, rfqLiquidity);
+
+        // Then
+        assertEq(token1.balanceOf(taker), 900); // -100
+        assertEq(token1.balanceOf(maker), 1080); // +80
+        assertEq(token1.balanceOf(maker2), 1020); // +20
+
+        assertEq(token2.balanceOf(taker), 1102); // +102
+        assertEq(token2.balanceOf(maker), 918); // -82
+        assertEq(token2.balanceOf(maker2), 980); // -20
+    }
+
+}

contracts/zero-ex/contracts/test/foundry/utils/DeployZeroEx.sol

@@ -0,0 +1,322 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
+pragma experimental ABIEncoderV2;
+
+import "forge-std/Test.sol";
+
+import "src/IZeroEx.sol";
+import "src/ZeroEx.sol";
+import "src/migrations/InitialMigration.sol";
+import "src/features/OwnableFeature.sol";
+import "src/features/SimpleFunctionRegistryFeature.sol";
+import "src/features/NativeOrdersFeature.sol";
+import "src/features/BatchFillNativeOrdersFeature.sol";
+import "src/features/FundRecoveryFeature.sol";
+import "src/features/TransformERC20Feature.sol";
+import "src/features/OtcOrdersFeature.sol";
+import "src/features/MetaTransactionsFeature.sol";
+import "src/features/nft_orders/ERC1155OrdersFeature.sol";
+import "src/features/nft_orders/ERC721OrdersFeature.sol";
+import "src/features/UniswapFeature.sol";
+import "src/features/multiplex/MultiplexFeature.sol";
+import "src/external/TransformerDeployer.sol";
+import "src/external/FeeCollectorController.sol";
+import "src/transformers/WethTransformer.sol";
+import "src/transformers/FillQuoteTransformer.sol";
+import "src/transformers/PayTakerTransformer.sol";
+import "src/transformers/AffiliateFeeTransformer.sol";
+import "src/transformers/PositiveSlippageFeeTransformer.sol";
+import "src/transformers/bridges/IBridgeAdapter.sol";
+import "src/transformers/bridges/EthereumBridgeAdapter.sol";
+
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+import "@0x/contracts-erc20/contracts/src/v06/WETH9V06.sol";
+
+
+contract DeployZeroEx is Test {
+    ZeroEx public ZERO_EX = ZeroEx(0xDef1C0ded9bec7F1a1670819833240f027b25EfF);
+    IZeroEx public IZERO_EX = IZeroEx(address(ZERO_EX));
+    address VANITY_DEPLOYER_ADDRESS = 0xe750ad66DE350F8110E305fb78Ec6A9f594445E3;
+    bytes deployerBytecode = hex"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";
+
+    address[] transformerSigners = [
+        address(this)
+    ];
+
+    bool isDeployed = false;
+
+    struct Features {
+        NativeOrdersFeature nativeOrdersFeature;
+        BatchFillNativeOrdersFeature batchFillNativeOrdersFeature;
+        OtcOrdersFeature otcOrdersFeature;
+        UniswapFeature uniswapFeature;
+        // UniswapV3Feature
+        FundRecoveryFeature fundRecoveryFeature;
+        TransformERC20Feature transformERC20Feature;
+        MetaTransactionsFeature metaTransactionsFeature;
+        ERC1155OrdersFeature erc1155OrdersFeature;
+        ERC721OrdersFeature erc721OrdersFeature;
+        MultiplexFeature multiplexFeature;
+    }
+
+    struct Transformers {
+        FillQuoteTransformer fillQuoteTransformer;
+        WethTransformer wethTransformer;
+        AffiliateFeeTransformer affiliateFeeTransformer;
+        PayTakerTransformer payTakerTransformer;
+    }
+
+    struct ZeroExDeployed {
+        IZeroEx zeroEx;
+
+        TransformerDeployer transformerDeployer;
+        FeeCollectorController feeCollectorController;
+        IStaking staking; // address(0)
+        // Features
+        Features features;
+
+        // Transformers
+        Transformers transformers;
+
+        IEtherTokenV06 weth;
+    }
+
+    ZeroExDeployed ZERO_EX_DEPLOYED;
+
+    function getDeployedZeroEx()
+        public
+        returns (ZeroExDeployed memory)
+    {
+        if (!isDeployed) {
+            deployZeroEx();
+        }
+        return ZERO_EX_DEPLOYED;
+    }
+
+    function logDeployedZeroEx()
+        public
+    {
+        emit log_string("--- Deployed ZeroEx ---");
+        emit log_named_address("ZeroEx", address(ZERO_EX));
+        emit log_named_address("TransformerDeployer", address(ZERO_EX_DEPLOYED.transformerDeployer));
+        emit log_named_address("FeeCollectorController", address(ZERO_EX_DEPLOYED.feeCollectorController));
+        emit log_named_address("Staking", address(ZERO_EX_DEPLOYED.staking));
+
+        emit log_string("----- Features -----");
+        emit log_named_address("NativeOrdersFeature", address(ZERO_EX_DEPLOYED.features.nativeOrdersFeature));
+        emit log_named_address("BatchFillNativeOrdersFeature", address(ZERO_EX_DEPLOYED.features.batchFillNativeOrdersFeature));
+        emit log_named_address("OtcOrdersFeature", address(ZERO_EX_DEPLOYED.features.otcOrdersFeature));
+        emit log_named_address("UniswapFeature", address(ZERO_EX_DEPLOYED.features.uniswapFeature));
+        emit log_named_address("FundRecoveryFeature", address(ZERO_EX_DEPLOYED.features.fundRecoveryFeature));
+        emit log_named_address("MetaTransactionsFeature", address(ZERO_EX_DEPLOYED.features.metaTransactionsFeature));
+        emit log_named_address("ERC1155OrdersFeature", address(ZERO_EX_DEPLOYED.features.erc1155OrdersFeature));
+        emit log_named_address("ERC721OrdersFeature", address(ZERO_EX_DEPLOYED.features.erc721OrdersFeature));
+        emit log_named_address("TransformERC20Feature", address(ZERO_EX_DEPLOYED.features.transformERC20Feature));
+        emit log_named_address("MultiplexFeature", address(ZERO_EX_DEPLOYED.features.multiplexFeature));
+
+        emit log_string("----- Transformers -----");
+        emit log_named_address("FillQuoteTransformer", address(ZERO_EX_DEPLOYED.transformers.fillQuoteTransformer));
+        emit log_named_address("WethTransformer", address(ZERO_EX_DEPLOYED.transformers.wethTransformer));
+        emit log_named_address("AffiliateFeeTransformer", address(ZERO_EX_DEPLOYED.transformers.affiliateFeeTransformer));
+        emit log_named_address("PayTakerTransformer", address(ZERO_EX_DEPLOYED.transformers.payTakerTransformer));
+
+        emit log_string("----- Other -----");
+        emit log_named_address("WETH", address(ZERO_EX_DEPLOYED.weth));
+    }
+
+    function deployZeroEx()
+        public
+        returns (ZeroExDeployed memory)
+    {
+        if (isDeployed) {
+            return ZERO_EX_DEPLOYED;
+        }
+
+        ZERO_EX_DEPLOYED.weth = IEtherTokenV06(address(new WETH9V06()));
+        InitialMigration initialMigration = new InitialMigration(address(this));
+        // Append the required ZeroEx constructor arguments (address bootstrapper)
+        bytes memory zeroExDeploycode = abi.encodePacked(
+            type(ZeroEx).creationCode,
+            abi.encode(initialMigration)
+        );
+        // Append the required deployer code constructor arguments (bytes initCode)
+        bytes memory deployerDeploycode = abi.encodePacked(
+            deployerBytecode,
+            abi.encode(zeroExDeploycode)
+        );
+        // HERE BE DRAGONS, feel free to ignore this for now
+        // We want to deploy the ZeroEx contract, at 0xDef1C0ded9bec7F1a1670819833240f027b25EfF
+
+        // We use a special mechanism to deploy the ZeroEx contract.
+        // Must occur from this address as the first transaction
+        // The address is technically emitted in an event, but we know we did it correctly
+        //│   │   ├─  emit topic 0: 0xf40fcec21964ffb566044d083b4073f29f7f7929110ea19e1b3ebe375d89055e
+        //│   │   │           data: 0x000000000000000000000000def1c0ded9bec7f1a1670819833240f027b25eff
+        hoax(VANITY_DEPLOYER_ADDRESS);
+        assembly {
+            pop(create(0, add(deployerDeploycode, 0x20), mload(deployerDeploycode)))
+        }
+        // Staking = address(0);
+        ZERO_EX_DEPLOYED.staking = IStaking(address(0));
+        ZERO_EX_DEPLOYED.transformerDeployer = new TransformerDeployer(
+            transformerSigners
+        );
+        ZERO_EX_DEPLOYED.feeCollectorController = new FeeCollectorController(
+            IEtherTokenV06(ZERO_EX_DEPLOYED.weth),
+            IStaking(ZERO_EX_DEPLOYED.staking)
+        );
+
+        
+        // Features
+        ZERO_EX_DEPLOYED.features.transformERC20Feature = new TransformERC20Feature();
+        ZERO_EX_DEPLOYED.features.nativeOrdersFeature = new NativeOrdersFeature(
+                address(ZERO_EX), // EP address
+                ZERO_EX_DEPLOYED.weth,
+                ZERO_EX_DEPLOYED.staking,
+                ZERO_EX_DEPLOYED.feeCollectorController, // feeCollectorController address
+                uint32(0) // protocolFeeMultiplier
+            );
+        ZERO_EX_DEPLOYED.features.batchFillNativeOrdersFeature = new BatchFillNativeOrdersFeature(
+            address(ZERO_EX)
+        );
+        ZERO_EX_DEPLOYED.features.otcOrdersFeature = new OtcOrdersFeature(
+            address(ZERO_EX),
+            ZERO_EX_DEPLOYED.weth
+        );
+        ZERO_EX_DEPLOYED.features.uniswapFeature = new UniswapFeature(ZERO_EX_DEPLOYED.weth);
+        ZERO_EX_DEPLOYED.features.fundRecoveryFeature = new FundRecoveryFeature();
+        ZERO_EX_DEPLOYED.features.metaTransactionsFeature = new MetaTransactionsFeature(address(ZERO_EX));
+        ZERO_EX_DEPLOYED.features.erc1155OrdersFeature = new ERC1155OrdersFeature(address(ZERO_EX), ZERO_EX_DEPLOYED.weth);
+        ZERO_EX_DEPLOYED.features.erc721OrdersFeature = new ERC721OrdersFeature(address(ZERO_EX), ZERO_EX_DEPLOYED.weth);
+        ZERO_EX_DEPLOYED.features.multiplexFeature = new MultiplexFeature(
+            address(ZERO_EX),
+            ZERO_EX_DEPLOYED.weth,
+            ILiquidityProviderSandbox(address(0)),
+            address(0), // uniswapFactory
+            address(0), // sushiswapFactory 
+            bytes32(0), // uniswapPairInitCodeHash
+            bytes32(0) // sushiswapPairInitCodeHash
+        );
+
+        initialMigration.initializeZeroEx(
+            payable(address(this)),
+            ZERO_EX,
+            InitialMigration.BootstrapFeatures({ 
+                registry: new SimpleFunctionRegistryFeature(), 
+                ownable: new OwnableFeature()
+            })
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.batchFillNativeOrdersFeature),
+            abi.encodeWithSelector(BatchFillNativeOrdersFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.transformERC20Feature),
+            abi.encodeWithSelector(TransformERC20Feature.migrate.selector, address(ZERO_EX_DEPLOYED.transformerDeployer)),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.nativeOrdersFeature),
+            abi.encodeWithSelector(NativeOrdersFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.otcOrdersFeature),
+            abi.encodeWithSelector(OtcOrdersFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.uniswapFeature),
+            abi.encodeWithSelector(UniswapFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.fundRecoveryFeature),
+            abi.encodeWithSelector(FundRecoveryFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.metaTransactionsFeature),
+            abi.encodeWithSelector(MetaTransactionsFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.erc1155OrdersFeature),
+            abi.encodeWithSelector(ERC1155OrdersFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.erc721OrdersFeature),
+            abi.encodeWithSelector(ERC721OrdersFeature.migrate.selector),
+            address(this)
+        );
+        IZERO_EX.migrate(
+            address(ZERO_EX_DEPLOYED.features.multiplexFeature),
+            abi.encodeWithSelector(MultiplexFeature.migrate.selector),
+            address(this)
+        );
+
+        // Transformers
+        ZERO_EX_DEPLOYED.transformers.wethTransformer = WethTransformer(
+            ZERO_EX_DEPLOYED.transformerDeployer.deploy(
+                abi.encodePacked(
+                    // Deploy the WethTransformer code
+                    type(WethTransformer).creationCode,
+                    // WethTransformer takes WETH address as a constructor argument
+                    abi.encode(address(ZERO_EX_DEPLOYED.weth))
+                )
+            )
+        );
+
+        // Deploy the FQT, NOTE: No bridge adapter in tests
+        ZERO_EX_DEPLOYED.transformers.fillQuoteTransformer = FillQuoteTransformer(
+            ZERO_EX_DEPLOYED.transformerDeployer.deploy(
+                abi.encodePacked(
+                    // Deploy the FQT code
+                    type(FillQuoteTransformer).creationCode,
+                    // FQT takes a BridgeAdapter and ZeroEx
+                    abi.encode(
+                        address(0), // Note: No BridgeAdapter in tests
+                        INativeOrdersFeature(address(ZERO_EX))
+                    )
+                )
+            )
+        );
+
+        ZERO_EX_DEPLOYED.transformers.affiliateFeeTransformer = AffiliateFeeTransformer(
+            ZERO_EX_DEPLOYED.transformerDeployer.deploy(
+                type(AffiliateFeeTransformer).creationCode
+            )
+        );
+
+        ZERO_EX_DEPLOYED.transformers.payTakerTransformer = PayTakerTransformer(
+            ZERO_EX_DEPLOYED.transformerDeployer.deploy(
+                type(PayTakerTransformer).creationCode
+            )
+        );
+
+        ZERO_EX_DEPLOYED.zeroEx = IZERO_EX;
+        isDeployed = true;
+        logDeployedZeroEx();
+        return ZERO_EX_DEPLOYED;
+    }
+}

contracts/zero-ex/contracts/test/foundry/utils/ForkUtils.sol

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 /*
 
-  Copyright 2021 ZeroEx Intl.
+  Copyright 2022 ZeroEx Intl.
 
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -18,28 +18,19 @@
 */
 
 pragma solidity ^0.6;
+pragma experimental ABIEncoderV2;
+
+import "forge-std/Test.sol";
 
 
-interface ISmoothy {
-
-    function getBalance (
-        uint256 tid
-    )
-        external
-        view
-        returns (uint256 balance);
-
-    function _yBalances (
-        uint256 tid
-    )
-        external
-        view
-        returns (uint256 balance);
-
-    function getTokenStats (
-        uint256 tid
-    )
-        external
-        view
-        returns (uint256 softWeight, uint256 hardWeight, uint256 balance, uint256 decimals);
-}
+contract ForkUtils is Test {
+    /// Only run this function if the block number
+    // is greater than some constant for Ethereum Mainnet
+    modifier onlyForked {
+        if (block.number >= 14206900) {
+            _;
+        } else {
+            emit log_string("Requires fork mode, skipping");
+        }
+    }
+}

contracts/zero-ex/contracts/test/foundry/utils/TestERC20.sol

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.6;
+
+import "openzeppelin-contracts/token/ERC20/ERC20.sol";
+
+contract TestERC20 is ERC20("Test ERC20", "TEST") {
+    function mint(address to, uint256 amount) external returns (bool) {
+        _mint(to, amount);
+        return true;
+    }
+}

contracts/zero-ex/contracts/test/foundry/utils/TestUtils.sol

@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
+pragma experimental ABIEncoderV2;
+
+import "forge-std/Test.sol";
+
+import "src/transformers/LibERC20Transformer.sol";
+
+contract TestUtils is Test {
+    uint256 private constant MAX_UINT256_STRING_LENGTH = 78;
+    uint8 private constant ASCII_DIGIT_OFFSET = 48;
+
+    function _toString(uint256 n) 
+        internal 
+        pure 
+        returns (string memory nstr) 
+    {
+        if (n == 0) {
+            return "0";
+        }
+        // Overallocate memory
+        nstr = new string(MAX_UINT256_STRING_LENGTH);
+        uint256 k = MAX_UINT256_STRING_LENGTH;
+        // Populate string from right to left (lsb to msb).
+        while (n != 0) {
+            assembly {
+                let char := add(
+                    ASCII_DIGIT_OFFSET,
+                    mod(n, 10)
+                )
+                mstore(add(nstr, k), char)
+                k := sub(k, 1)
+                n := div(n, 10)
+            }
+        }
+        assembly {
+            // Shift pointer over to actual start of string.
+            nstr := add(nstr, k)
+            // Store actual string length.
+            mstore(nstr, sub(MAX_UINT256_STRING_LENGTH, k))
+        }
+        return nstr;
+    }    
+
+    function _findTransformerNonce(
+        address transformer,
+        address deployer
+    )
+        internal
+        pure
+        returns (uint32)
+    {
+        address current;
+        for (uint32 i = 0; i < 1024; i++) {
+            current = LibERC20Transformer.getDeployedAddress(deployer, i);
+            if (current == transformer) {
+                return i;
+            }
+        }
+    }
+}

contracts/zero-ex/foundry.toml

@@ -0,0 +1,9 @@
+[profile.default]
+src = 'contracts/src'
+out = 'foundry-artifacts'
+test = 'contracts/test/foundry'
+libs = ["contracts/deps/", "../utils/contracts/src/"]
+remappings = ['@0x/contracts-utils/=../utils/', '@0x/contracts-erc20/=../erc20/', 'src/=./contracts/src']
+cache_path = 'foundry-cache'
+optimizer_runs = 1000000
+

contracts/zero-ex/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-zero-ex",
-    "version": "0.33.0",
+    "version": "0.36.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -15,6 +15,7 @@
         "build:ts": "tsc -b",
         "pre_build": "run-s compile contracts:gen generate_contract_wrappers contracts:copy",
         "test": "yarn run_mocha",
+        "forge": "forge test -vvv",
         "rebuild_and_test": "run-s build test",
         "test:coverage": "SOLIDITY_COVERAGE=true run-s build run_mocha coverage:report:text coverage:report:lcov",
         "test:profiler": "SOLIDITY_PROFILER=true run-s build run_mocha profiler:report:html",
@@ -38,12 +39,14 @@
         "docs:md": "ts-doc-gen --sourceDir='$PROJECT_FILES' --output=$MD_FILE_DIR --fileExtension=mdx --tsconfig=./typedoc-tsconfig.json",
         "docs:json": "typedoc --excludePrivate --excludeExternals --excludeProtected --ignoreCompilerErrors --target ES5 --tsconfig typedoc-tsconfig.json --json $JSON_FILE_PATH $PROJECT_FILES",
         "publish:private": "yarn build && gitpkg publish",
-        "rollback": "node ./lib/scripts/rollback.js"
+        "rollback": "node ./lib/scripts/rollback.js",
+        "typechain": "typechain --target=ethers-v5 --out-dir='typechain-wrappers'  './foundry-artifacts/**/*.json'",
+        "foundry:SU": "git submodule update --init --recursive"
     },
     "config": {
-        "publicInterfaceContracts": "IZeroEx,ZeroEx,FullMigration,InitialMigration,IFlashWallet,IERC20Transformer,IOwnableFeature,ISimpleFunctionRegistryFeature,ITransformERC20Feature,FillQuoteTransformer,PayTakerTransformer,PositiveSlippageFeeTransformer,WethTransformer,OwnableFeature,SimpleFunctionRegistryFeature,TransformERC20Feature,AffiliateFeeTransformer,MetaTransactionsFeature,LogMetadataTransformer,BridgeAdapter,LiquidityProviderFeature,ILiquidityProviderFeature,NativeOrdersFeature,INativeOrdersFeature,FeeCollectorController,FeeCollector,CurveLiquidityProvider,BatchFillNativeOrdersFeature,IBatchFillNativeOrdersFeature,MultiplexFeature,IMultiplexFeature,OtcOrdersFeature,IOtcOrdersFeature",
+        "publicInterfaceContracts": "IZeroEx,ZeroEx,FullMigration,InitialMigration,IFlashWallet,IERC20Transformer,IOwnableFeature,ISimpleFunctionRegistryFeature,ITransformERC20Feature,FillQuoteTransformer,PayTakerTransformer,PositiveSlippageFeeTransformer,WethTransformer,OwnableFeature,SimpleFunctionRegistryFeature,TransformERC20Feature,AffiliateFeeTransformer,MetaTransactionsFeature,LogMetadataTransformer,LiquidityProviderFeature,ILiquidityProviderFeature,NativeOrdersFeature,INativeOrdersFeature,FeeCollectorController,FeeCollector,CurveLiquidityProvider,BatchFillNativeOrdersFeature,IBatchFillNativeOrdersFeature,MultiplexFeature,IMultiplexFeature,OtcOrdersFeature,IOtcOrdersFeature,AvalancheBridgeAdapter,BSCBridgeAdapter,CeloBridgeAdapter,EthereumBridgeAdapter,FantomBridgeAdapter,OptimismBridgeAdapter,PolygonBridgeAdapter",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually.",
-        "abis": "./test/generated-artifacts/@(AffiliateFeeTransformer|BatchFillNativeOrdersFeature|BootstrapFeature|BridgeAdapter|BridgeProtocols|CurveLiquidityProvider|ERC1155OrdersFeature|ERC165Feature|ERC721OrdersFeature|FeeCollector|FeeCollectorController|FillQuoteTransformer|FixinCommon|FixinEIP712|FixinERC1155Spender|FixinERC721Spender|FixinProtocolFees|FixinReentrancyGuard|FixinTokenSpender|FlashWallet|FullMigration|FundRecoveryFeature|IBatchFillNativeOrdersFeature|IBootstrapFeature|IBridgeAdapter|IERC1155OrdersFeature|IERC1155Token|IERC165Feature|IERC20Bridge|IERC20Transformer|IERC721OrdersFeature|IERC721Token|IFeature|IFeeRecipient|IFlashWallet|IFundRecoveryFeature|ILiquidityProvider|ILiquidityProviderFeature|ILiquidityProviderSandbox|IMetaTransactionsFeature|IMooniswapPool|IMultiplexFeature|INativeOrdersEvents|INativeOrdersFeature|IOtcOrdersFeature|IOwnableFeature|IPancakeSwapFeature|IPropertyValidator|ISimpleFunctionRegistryFeature|IStaking|ITakerCallback|ITestSimpleFunctionRegistryFeature|ITokenSpenderFeature|ITransformERC20Feature|IUniswapFeature|IUniswapV2Pair|IUniswapV3Feature|IUniswapV3Pool|IZeroEx|InitialMigration|LibBootstrap|LibCommonRichErrors|LibERC1155OrdersStorage|LibERC20Transformer|LibERC721OrdersStorage|LibFeeCollector|LibLiquidityProviderRichErrors|LibMetaTransactionsRichErrors|LibMetaTransactionsStorage|LibMigrate|LibNFTOrder|LibNFTOrdersRichErrors|LibNativeOrder|LibNativeOrdersRichErrors|LibNativeOrdersStorage|LibOtcOrdersStorage|LibOwnableRichErrors|LibOwnableStorage|LibProxyRichErrors|LibProxyStorage|LibReentrancyGuardStorage|LibSignature|LibSignatureRichErrors|LibSimpleFunctionRegistryRichErrors|LibSimpleFunctionRegistryStorage|LibStorage|LibTransformERC20RichErrors|LibTransformERC20Storage|LibWalletRichErrors|LiquidityProviderFeature|LiquidityProviderSandbox|LogMetadataTransformer|MetaTransactionsFeature|MixinAaveV2|MixinBalancer|MixinBalancerV2|MixinBalancerV2Batch|MixinBancor|MixinCoFiX|MixinCompound|MixinCryptoCom|MixinCurve|MixinCurveV2|MixinDodo|MixinDodoV2|MixinGMX|MixinKyber|MixinKyberDmm|MixinLido|MixinMStable|MixinMakerPSM|MixinMooniswap|MixinNerve|MixinOasis|MixinPlatypus|MixinShell|MixinUniswap|MixinUniswapV2|MixinUniswapV3|MixinZeroExBridge|MooniswapLiquidityProvider|MultiplexFeature|MultiplexLiquidityProvider|MultiplexOtc|MultiplexRfq|MultiplexTransformERC20|MultiplexUniswapV2|MultiplexUniswapV3|NFTOrders|NativeOrdersCancellation|NativeOrdersFeature|NativeOrdersInfo|NativeOrdersProtocolFees|NativeOrdersSettlement|OtcOrdersFeature|OwnableFeature|PancakeSwapFeature|PayTakerTransformer|PermissionlessTransformerDeployer|PositiveSlippageFeeTransformer|SimpleFunctionRegistryFeature|TestBridge|TestCallTarget|TestCurve|TestDelegateCaller|TestFeeCollectorController|TestFeeRecipient|TestFillQuoteTransformerBridge|TestFillQuoteTransformerExchange|TestFillQuoteTransformerHost|TestFixinProtocolFees|TestFixinTokenSpender|TestFullMigration|TestInitialMigration|TestLibNativeOrder|TestLibSignature|TestLiquidityProvider|TestMetaTransactionsNativeOrdersFeature|TestMetaTransactionsTransformERC20Feature|TestMigrator|TestMintTokenERC20Transformer|TestMintableERC1155Token|TestMintableERC20Token|TestMintableERC721Token|TestMooniswap|TestNFTOrderPresigner|TestNativeOrdersFeature|TestNoEthRecipient|TestOrderSignerRegistryWithContractWallet|TestPermissionlessTransformerDeployerSuicidal|TestPermissionlessTransformerDeployerTransformer|TestPropertyValidator|TestRfqOriginRegistration|TestSimpleFunctionRegistryFeatureImpl1|TestSimpleFunctionRegistryFeatureImpl2|TestStaking|TestTokenSpenderERC20Token|TestTransformERC20|TestTransformerBase|TestTransformerDeployerTransformer|TestTransformerHost|TestUniswapV2Factory|TestUniswapV2Pool|TestUniswapV3Factory|TestUniswapV3Feature|TestUniswapV3Pool|TestWeth|TestWethTransformerHost|TestZeroExFeature|TransformERC20Feature|Transformer|TransformerDeployer|UniswapFeature|UniswapV3Feature|WethTransformer|ZeroEx|ZeroExOptimized).json"
+        "abis": "./test/generated-artifacts/@(AbstractBridgeAdapter|AffiliateFeeTransformer|AvalancheBridgeAdapter|BSCBridgeAdapter|BatchFillNativeOrdersFeature|BootstrapFeature|BridgeProtocols|CeloBridgeAdapter|CurveLiquidityProvider|ERC1155OrdersFeature|ERC165Feature|ERC721OrdersFeature|EthereumBridgeAdapter|FantomBridgeAdapter|FeeCollector|FeeCollectorController|FillQuoteTransformer|FixinCommon|FixinEIP712|FixinERC1155Spender|FixinERC721Spender|FixinProtocolFees|FixinReentrancyGuard|FixinTokenSpender|FlashWallet|FullMigration|FundRecoveryFeature|IBatchFillNativeOrdersFeature|IBootstrapFeature|IBridgeAdapter|IERC1155OrdersFeature|IERC1155Token|IERC165Feature|IERC20Bridge|IERC20Transformer|IERC721OrdersFeature|IERC721Token|IFeature|IFeeRecipient|IFlashWallet|IFundRecoveryFeature|ILiquidityProvider|ILiquidityProviderFeature|ILiquidityProviderSandbox|IMetaTransactionsFeature|IMooniswapPool|IMultiplexFeature|INativeOrdersEvents|INativeOrdersFeature|IOtcOrdersFeature|IOwnableFeature|IPancakeSwapFeature|IPropertyValidator|ISimpleFunctionRegistryFeature|IStaking|ITakerCallback|ITestSimpleFunctionRegistryFeature|ITokenSpenderFeature|ITransformERC20Feature|IUniswapFeature|IUniswapV2Pair|IUniswapV3Feature|IUniswapV3Pool|IZeroEx|InitialMigration|LibBootstrap|LibCommonRichErrors|LibERC1155OrdersStorage|LibERC20Transformer|LibERC721OrdersStorage|LibFeeCollector|LibLiquidityProviderRichErrors|LibMetaTransactionsRichErrors|LibMetaTransactionsStorage|LibMigrate|LibNFTOrder|LibNFTOrdersRichErrors|LibNativeOrder|LibNativeOrdersRichErrors|LibNativeOrdersStorage|LibOtcOrdersStorage|LibOwnableRichErrors|LibOwnableStorage|LibProxyRichErrors|LibProxyStorage|LibReentrancyGuardStorage|LibSignature|LibSignatureRichErrors|LibSimpleFunctionRegistryRichErrors|LibSimpleFunctionRegistryStorage|LibStorage|LibTransformERC20RichErrors|LibTransformERC20Storage|LibWalletRichErrors|LiquidityProviderFeature|LiquidityProviderSandbox|LogMetadataTransformer|MetaTransactionsFeature|MixinAaveV2|MixinBalancer|MixinBalancerV2|MixinBalancerV2Batch|MixinBancor|MixinBancorV3|MixinCompound|MixinCryptoCom|MixinCurve|MixinCurveV2|MixinDodo|MixinDodoV2|MixinGMX|MixinKyberDmm|MixinLido|MixinMStable|MixinMakerPSM|MixinMooniswap|MixinNerve|MixinPlatypus|MixinShell|MixinSynthetix|MixinUniswap|MixinUniswapV2|MixinUniswapV3|MixinVelodrome|MixinZeroExBridge|MooniswapLiquidityProvider|MultiplexFeature|MultiplexLiquidityProvider|MultiplexOtc|MultiplexRfq|MultiplexTransformERC20|MultiplexUniswapV2|MultiplexUniswapV3|NFTOrders|NativeOrdersCancellation|NativeOrdersFeature|NativeOrdersInfo|NativeOrdersProtocolFees|NativeOrdersSettlement|OptimismBridgeAdapter|OtcOrdersFeature|OwnableFeature|PancakeSwapFeature|PayTakerTransformer|PermissionlessTransformerDeployer|PolygonBridgeAdapter|PositiveSlippageFeeTransformer|SimpleFunctionRegistryFeature|TestBridge|TestCallTarget|TestCurve|TestDelegateCaller|TestFeeCollectorController|TestFeeRecipient|TestFillQuoteTransformerBridge|TestFillQuoteTransformerExchange|TestFillQuoteTransformerHost|TestFixinProtocolFees|TestFixinTokenSpender|TestFullMigration|TestInitialMigration|TestLibNativeOrder|TestLibSignature|TestLiquidityProvider|TestMetaTransactionsNativeOrdersFeature|TestMetaTransactionsTransformERC20Feature|TestMigrator|TestMintTokenERC20Transformer|TestMintableERC1155Token|TestMintableERC20Token|TestMintableERC721Token|TestMooniswap|TestNFTOrderPresigner|TestNativeOrdersFeature|TestNoEthRecipient|TestOrderSignerRegistryWithContractWallet|TestPermissionlessTransformerDeployerSuicidal|TestPermissionlessTransformerDeployerTransformer|TestPropertyValidator|TestRfqOriginRegistration|TestSimpleFunctionRegistryFeatureImpl1|TestSimpleFunctionRegistryFeatureImpl2|TestStaking|TestTokenSpenderERC20Token|TestTransformERC20|TestTransformerBase|TestTransformerDeployerTransformer|TestTransformerHost|TestUniswapV2Factory|TestUniswapV2Pool|TestUniswapV3Factory|TestUniswapV3Feature|TestUniswapV3Pool|TestWeth|TestWethTransformerHost|TestZeroExFeature|TransformERC20Feature|Transformer|TransformerDeployer|UniswapFeature|UniswapV3Feature|WethTransformer|ZeroEx|ZeroExOptimized).json"
     },
     "repository": {
         "type": "git",
@@ -55,16 +58,17 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/zero-ex",
     "devDependencies": {
-        "@0x/abi-gen": "^5.8.0",
-        "@0x/contract-addresses": "^6.14.0",
-        "@0x/contracts-erc20": "^3.3.30",
-        "@0x/contracts-gen": "^2.0.46",
-        "@0x/contracts-test-utils": "^5.4.21",
-        "@0x/dev-utils": "^4.2.14",
+        "@0x/abi-gen": "^5.8.1",
+        "@0x/contract-addresses": "^6.19.2",
+        "@0x/contracts-erc20": "^3.3.36",
+        "@0x/contracts-gen": "^2.0.47",
+        "@0x/contracts-test-utils": "^5.4.27",
+        "@0x/dev-utils": "^5.0.0",
         "@0x/order-utils": "^10.4.28",
-        "@0x/sol-compiler": "^4.8.1",
+        "@0x/sol-compiler": "^4.8.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.4",
+        "@typechain/ethers-v5": "^10.0.0",
         "@types/isomorphic-fetch": "^0.0.35",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
@@ -78,18 +82,19 @@
         "solhint": "^1.4.1",
         "truffle": "^5.0.32",
         "tslint": "5.11.0",
+        "typechain": "^8.0.0",
         "typedoc": "~0.16.11",
         "typescript": "4.6.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.5.0",
-        "@0x/protocol-utils": "^11.13.0",
-        "@0x/subproviders": "^6.6.5",
+        "@0x/base-contract": "^7.0.0",
+        "@0x/protocol-utils": "^11.16.3",
+        "@0x/subproviders": "^7.0.0",
         "@0x/types": "^3.3.6",
         "@0x/typescript-typings": "^5.3.1",
-        "@0x/utils": "^6.5.3",
-        "@0x/web3-wrapper": "^7.6.5",
-        "ethereum-types": "^3.7.0",
+        "@0x/utils": "^7.0.0",
+        "@0x/web3-wrapper": "^8.0.0",
+        "ethereum-types": "^3.7.1",
         "ethereumjs-util": "^7.0.10",
         "ethers": "~4.0.4"
     },

contracts/zero-ex/src/artifacts.ts

@@ -6,9 +6,13 @@
 import { ContractArtifact } from 'ethereum-types';
 
 import * as AffiliateFeeTransformer from '../generated-artifacts/AffiliateFeeTransformer.json';
+import * as AvalancheBridgeAdapter from '../generated-artifacts/AvalancheBridgeAdapter.json';
 import * as BatchFillNativeOrdersFeature from '../generated-artifacts/BatchFillNativeOrdersFeature.json';
-import * as BridgeAdapter from '../generated-artifacts/BridgeAdapter.json';
+import * as BSCBridgeAdapter from '../generated-artifacts/BSCBridgeAdapter.json';
+import * as CeloBridgeAdapter from '../generated-artifacts/CeloBridgeAdapter.json';
 import * as CurveLiquidityProvider from '../generated-artifacts/CurveLiquidityProvider.json';
+import * as EthereumBridgeAdapter from '../generated-artifacts/EthereumBridgeAdapter.json';
+import * as FantomBridgeAdapter from '../generated-artifacts/FantomBridgeAdapter.json';
 import * as FeeCollector from '../generated-artifacts/FeeCollector.json';
 import * as FeeCollectorController from '../generated-artifacts/FeeCollectorController.json';
 import * as FillQuoteTransformer from '../generated-artifacts/FillQuoteTransformer.json';
@@ -30,9 +34,11 @@ import * as LogMetadataTransformer from '../generated-artifacts/LogMetadataTrans
 import * as MetaTransactionsFeature from '../generated-artifacts/MetaTransactionsFeature.json';
 import * as MultiplexFeature from '../generated-artifacts/MultiplexFeature.json';
 import * as NativeOrdersFeature from '../generated-artifacts/NativeOrdersFeature.json';
+import * as OptimismBridgeAdapter from '../generated-artifacts/OptimismBridgeAdapter.json';
 import * as OtcOrdersFeature from '../generated-artifacts/OtcOrdersFeature.json';
 import * as OwnableFeature from '../generated-artifacts/OwnableFeature.json';
 import * as PayTakerTransformer from '../generated-artifacts/PayTakerTransformer.json';
+import * as PolygonBridgeAdapter from '../generated-artifacts/PolygonBridgeAdapter.json';
 import * as PositiveSlippageFeeTransformer from '../generated-artifacts/PositiveSlippageFeeTransformer.json';
 import * as SimpleFunctionRegistryFeature from '../generated-artifacts/SimpleFunctionRegistryFeature.json';
 import * as TransformERC20Feature from '../generated-artifacts/TransformERC20Feature.json';
@@ -58,7 +64,6 @@ export const artifacts = {
     AffiliateFeeTransformer: AffiliateFeeTransformer as ContractArtifact,
     MetaTransactionsFeature: MetaTransactionsFeature as ContractArtifact,
     LogMetadataTransformer: LogMetadataTransformer as ContractArtifact,
-    BridgeAdapter: BridgeAdapter as ContractArtifact,
     LiquidityProviderFeature: LiquidityProviderFeature as ContractArtifact,
     ILiquidityProviderFeature: ILiquidityProviderFeature as ContractArtifact,
     NativeOrdersFeature: NativeOrdersFeature as ContractArtifact,
@@ -72,4 +77,11 @@ export const artifacts = {
     IMultiplexFeature: IMultiplexFeature as ContractArtifact,
     OtcOrdersFeature: OtcOrdersFeature as ContractArtifact,
     IOtcOrdersFeature: IOtcOrdersFeature as ContractArtifact,
+    AvalancheBridgeAdapter: AvalancheBridgeAdapter as ContractArtifact,
+    BSCBridgeAdapter: BSCBridgeAdapter as ContractArtifact,
+    CeloBridgeAdapter: CeloBridgeAdapter as ContractArtifact,
+    EthereumBridgeAdapter: EthereumBridgeAdapter as ContractArtifact,
+    FantomBridgeAdapter: FantomBridgeAdapter as ContractArtifact,
+    OptimismBridgeAdapter: OptimismBridgeAdapter as ContractArtifact,
+    PolygonBridgeAdapter: PolygonBridgeAdapter as ContractArtifact,
 };

contracts/zero-ex/src/index.ts

@@ -35,7 +35,11 @@ export * from './bloom_filter_utils';
 export { GREEDY_TOKENS } from './constants';
 export {
     AffiliateFeeTransformerContract,
-    BridgeAdapterContract,
+    AvalancheBridgeAdapterContract,
+    BSCBridgeAdapterContract,
+    CeloBridgeAdapterContract,
+    EthereumBridgeAdapterContract,
+    FantomBridgeAdapterContract,
     FillQuoteTransformerContract,
     IOwnableFeatureContract,
     IOwnableFeatureEvents,
@@ -45,7 +49,9 @@ export {
     IZeroExContract,
     LogMetadataTransformerContract,
     MultiplexFeatureContract,
+    OptimismBridgeAdapterContract,
     PayTakerTransformerContract,
+    PolygonBridgeAdapterContract,
     PositiveSlippageFeeTransformerContract,
     TransformERC20FeatureContract,
     WethTransformerContract,

contracts/zero-ex/src/wrappers.ts

@@ -4,9 +4,13 @@
  * -----------------------------------------------------------------------------
  */
 export * from '../generated-wrappers/affiliate_fee_transformer';
+export * from '../generated-wrappers/avalanche_bridge_adapter';
+export * from '../generated-wrappers/b_s_c_bridge_adapter';
 export * from '../generated-wrappers/batch_fill_native_orders_feature';
-export * from '../generated-wrappers/bridge_adapter';
+export * from '../generated-wrappers/celo_bridge_adapter';
 export * from '../generated-wrappers/curve_liquidity_provider';
+export * from '../generated-wrappers/ethereum_bridge_adapter';
+export * from '../generated-wrappers/fantom_bridge_adapter';
 export * from '../generated-wrappers/fee_collector';
 export * from '../generated-wrappers/fee_collector_controller';
 export * from '../generated-wrappers/fill_quote_transformer';
@@ -28,9 +32,11 @@ export * from '../generated-wrappers/log_metadata_transformer';
 export * from '../generated-wrappers/meta_transactions_feature';
 export * from '../generated-wrappers/multiplex_feature';
 export * from '../generated-wrappers/native_orders_feature';
+export * from '../generated-wrappers/optimism_bridge_adapter';
 export * from '../generated-wrappers/otc_orders_feature';
 export * from '../generated-wrappers/ownable_feature';
 export * from '../generated-wrappers/pay_taker_transformer';
+export * from '../generated-wrappers/polygon_bridge_adapter';
 export * from '../generated-wrappers/positive_slippage_fee_transformer';
 export * from '../generated-wrappers/simple_function_registry_feature';
 export * from '../generated-wrappers/transform_erc20_feature';

contracts/zero-ex/test/artifacts.ts

@@ -5,15 +5,20 @@
  */
 import { ContractArtifact } from 'ethereum-types';
 
+import * as AbstractBridgeAdapter from '../test/generated-artifacts/AbstractBridgeAdapter.json';
 import * as AffiliateFeeTransformer from '../test/generated-artifacts/AffiliateFeeTransformer.json';
+import * as AvalancheBridgeAdapter from '../test/generated-artifacts/AvalancheBridgeAdapter.json';
 import * as BatchFillNativeOrdersFeature from '../test/generated-artifacts/BatchFillNativeOrdersFeature.json';
 import * as BootstrapFeature from '../test/generated-artifacts/BootstrapFeature.json';
-import * as BridgeAdapter from '../test/generated-artifacts/BridgeAdapter.json';
 import * as BridgeProtocols from '../test/generated-artifacts/BridgeProtocols.json';
+import * as BSCBridgeAdapter from '../test/generated-artifacts/BSCBridgeAdapter.json';
+import * as CeloBridgeAdapter from '../test/generated-artifacts/CeloBridgeAdapter.json';
 import * as CurveLiquidityProvider from '../test/generated-artifacts/CurveLiquidityProvider.json';
 import * as ERC1155OrdersFeature from '../test/generated-artifacts/ERC1155OrdersFeature.json';
 import * as ERC165Feature from '../test/generated-artifacts/ERC165Feature.json';
 import * as ERC721OrdersFeature from '../test/generated-artifacts/ERC721OrdersFeature.json';
+import * as EthereumBridgeAdapter from '../test/generated-artifacts/EthereumBridgeAdapter.json';
+import * as FantomBridgeAdapter from '../test/generated-artifacts/FantomBridgeAdapter.json';
 import * as FeeCollector from '../test/generated-artifacts/FeeCollector.json';
 import * as FeeCollectorController from '../test/generated-artifacts/FeeCollectorController.json';
 import * as FillQuoteTransformer from '../test/generated-artifacts/FillQuoteTransformer.json';
@@ -103,7 +108,7 @@ import * as MixinBalancer from '../test/generated-artifacts/MixinBalancer.json';
 import * as MixinBalancerV2 from '../test/generated-artifacts/MixinBalancerV2.json';
 import * as MixinBalancerV2Batch from '../test/generated-artifacts/MixinBalancerV2Batch.json';
 import * as MixinBancor from '../test/generated-artifacts/MixinBancor.json';
-import * as MixinCoFiX from '../test/generated-artifacts/MixinCoFiX.json';
+import * as MixinBancorV3 from '../test/generated-artifacts/MixinBancorV3.json';
 import * as MixinCompound from '../test/generated-artifacts/MixinCompound.json';
 import * as MixinCryptoCom from '../test/generated-artifacts/MixinCryptoCom.json';
 import * as MixinCurve from '../test/generated-artifacts/MixinCurve.json';
@@ -111,19 +116,19 @@ import * as MixinCurveV2 from '../test/generated-artifacts/MixinCurveV2.json';
 import * as MixinDodo from '../test/generated-artifacts/MixinDodo.json';
 import * as MixinDodoV2 from '../test/generated-artifacts/MixinDodoV2.json';
 import * as MixinGMX from '../test/generated-artifacts/MixinGMX.json';
-import * as MixinKyber from '../test/generated-artifacts/MixinKyber.json';
 import * as MixinKyberDmm from '../test/generated-artifacts/MixinKyberDmm.json';
 import * as MixinLido from '../test/generated-artifacts/MixinLido.json';
 import * as MixinMakerPSM from '../test/generated-artifacts/MixinMakerPSM.json';
 import * as MixinMooniswap from '../test/generated-artifacts/MixinMooniswap.json';
 import * as MixinMStable from '../test/generated-artifacts/MixinMStable.json';
 import * as MixinNerve from '../test/generated-artifacts/MixinNerve.json';
-import * as MixinOasis from '../test/generated-artifacts/MixinOasis.json';
 import * as MixinPlatypus from '../test/generated-artifacts/MixinPlatypus.json';
 import * as MixinShell from '../test/generated-artifacts/MixinShell.json';
+import * as MixinSynthetix from '../test/generated-artifacts/MixinSynthetix.json';
 import * as MixinUniswap from '../test/generated-artifacts/MixinUniswap.json';
 import * as MixinUniswapV2 from '../test/generated-artifacts/MixinUniswapV2.json';
 import * as MixinUniswapV3 from '../test/generated-artifacts/MixinUniswapV3.json';
+import * as MixinVelodrome from '../test/generated-artifacts/MixinVelodrome.json';
 import * as MixinZeroExBridge from '../test/generated-artifacts/MixinZeroExBridge.json';
 import * as MooniswapLiquidityProvider from '../test/generated-artifacts/MooniswapLiquidityProvider.json';
 import * as MultiplexFeature from '../test/generated-artifacts/MultiplexFeature.json';
@@ -139,11 +144,13 @@ import * as NativeOrdersInfo from '../test/generated-artifacts/NativeOrdersInfo.
 import * as NativeOrdersProtocolFees from '../test/generated-artifacts/NativeOrdersProtocolFees.json';
 import * as NativeOrdersSettlement from '../test/generated-artifacts/NativeOrdersSettlement.json';
 import * as NFTOrders from '../test/generated-artifacts/NFTOrders.json';
+import * as OptimismBridgeAdapter from '../test/generated-artifacts/OptimismBridgeAdapter.json';
 import * as OtcOrdersFeature from '../test/generated-artifacts/OtcOrdersFeature.json';
 import * as OwnableFeature from '../test/generated-artifacts/OwnableFeature.json';
 import * as PancakeSwapFeature from '../test/generated-artifacts/PancakeSwapFeature.json';
 import * as PayTakerTransformer from '../test/generated-artifacts/PayTakerTransformer.json';
 import * as PermissionlessTransformerDeployer from '../test/generated-artifacts/PermissionlessTransformerDeployer.json';
+import * as PolygonBridgeAdapter from '../test/generated-artifacts/PolygonBridgeAdapter.json';
 import * as PositiveSlippageFeeTransformer from '../test/generated-artifacts/PositiveSlippageFeeTransformer.json';
 import * as SimpleFunctionRegistryFeature from '../test/generated-artifacts/SimpleFunctionRegistryFeature.json';
 import * as TestBridge from '../test/generated-artifacts/TestBridge.json';
@@ -310,15 +317,22 @@ export const artifacts = {
     PositiveSlippageFeeTransformer: PositiveSlippageFeeTransformer as ContractArtifact,
     Transformer: Transformer as ContractArtifact,
     WethTransformer: WethTransformer as ContractArtifact,
-    BridgeAdapter: BridgeAdapter as ContractArtifact,
+    AbstractBridgeAdapter: AbstractBridgeAdapter as ContractArtifact,
+    AvalancheBridgeAdapter: AvalancheBridgeAdapter as ContractArtifact,
+    BSCBridgeAdapter: BSCBridgeAdapter as ContractArtifact,
     BridgeProtocols: BridgeProtocols as ContractArtifact,
+    CeloBridgeAdapter: CeloBridgeAdapter as ContractArtifact,
+    EthereumBridgeAdapter: EthereumBridgeAdapter as ContractArtifact,
+    FantomBridgeAdapter: FantomBridgeAdapter as ContractArtifact,
     IBridgeAdapter: IBridgeAdapter as ContractArtifact,
+    OptimismBridgeAdapter: OptimismBridgeAdapter as ContractArtifact,
+    PolygonBridgeAdapter: PolygonBridgeAdapter as ContractArtifact,
     MixinAaveV2: MixinAaveV2 as ContractArtifact,
     MixinBalancer: MixinBalancer as ContractArtifact,
     MixinBalancerV2: MixinBalancerV2 as ContractArtifact,
     MixinBalancerV2Batch: MixinBalancerV2Batch as ContractArtifact,
     MixinBancor: MixinBancor as ContractArtifact,
-    MixinCoFiX: MixinCoFiX as ContractArtifact,
+    MixinBancorV3: MixinBancorV3 as ContractArtifact,
     MixinCompound: MixinCompound as ContractArtifact,
     MixinCryptoCom: MixinCryptoCom as ContractArtifact,
     MixinCurve: MixinCurve as ContractArtifact,
@@ -326,19 +340,19 @@ export const artifacts = {
     MixinDodo: MixinDodo as ContractArtifact,
     MixinDodoV2: MixinDodoV2 as ContractArtifact,
     MixinGMX: MixinGMX as ContractArtifact,
-    MixinKyber: MixinKyber as ContractArtifact,
     MixinKyberDmm: MixinKyberDmm as ContractArtifact,
     MixinLido: MixinLido as ContractArtifact,
     MixinMStable: MixinMStable as ContractArtifact,
     MixinMakerPSM: MixinMakerPSM as ContractArtifact,
     MixinMooniswap: MixinMooniswap as ContractArtifact,
     MixinNerve: MixinNerve as ContractArtifact,
-    MixinOasis: MixinOasis as ContractArtifact,
     MixinPlatypus: MixinPlatypus as ContractArtifact,
     MixinShell: MixinShell as ContractArtifact,
+    MixinSynthetix: MixinSynthetix as ContractArtifact,
     MixinUniswap: MixinUniswap as ContractArtifact,
     MixinUniswapV2: MixinUniswapV2 as ContractArtifact,
     MixinUniswapV3: MixinUniswapV3 as ContractArtifact,
+    MixinVelodrome: MixinVelodrome as ContractArtifact,
     MixinZeroExBridge: MixinZeroExBridge as ContractArtifact,
     IERC1155Token: IERC1155Token as ContractArtifact,
     IERC721Token: IERC721Token as ContractArtifact,

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

@@ -30,7 +30,7 @@ blockchainTests.resets('MetaTransactions feature', env => {
     let maker: string;
     let sender: string;
     let notSigner: string;
-    let signers: string[];
+    const signers: string[] = [];
     let zeroEx: IZeroExContract;
     let feature: MetaTransactionsFeatureContract;
     let feeToken: TestMintableERC20TokenContract;
@@ -45,7 +45,8 @@ blockchainTests.resets('MetaTransactions feature', env => {
     const REENTRANCY_FLAG_MTX = 0x1;
 
     before(async () => {
-        [owner, maker, sender, notSigner, ...signers] = await env.getAccountAddressesAsync();
+        let possibleSigners: string[];
+        [owner, maker, sender, notSigner, ...possibleSigners] = await env.getAccountAddressesAsync();
         transformERC20Feature = await TestMetaTransactionsTransformERC20FeatureContract.deployFrom0xArtifactAsync(
             artifacts.TestMetaTransactionsTransformERC20Feature,
             env.provider,
@@ -74,20 +75,26 @@ blockchainTests.resets('MetaTransactions feature', env => {
             env.txDefaults,
             {},
         );
-        // Fund signers with fee tokens.
-        await Promise.all(
-            signers.map(async signer => {
-                await feeToken.mint(signer, MAX_FEE_AMOUNT).awaitTransactionSuccessAsync();
-                await feeToken.approve(zeroEx.address, MAX_FEE_AMOUNT).awaitTransactionSuccessAsync({ from: signer });
-            }),
-        );
+
+        // some accounts returned can be unfunded
+        for (const possibleSigner of possibleSigners) {
+            const balance = await env.web3Wrapper.getBalanceInWeiAsync(possibleSigner);
+            if (balance.isGreaterThan(0)) {
+                signers.push(possibleSigner);
+                await feeToken
+                    .approve(zeroEx.address, MAX_FEE_AMOUNT)
+                    .awaitTransactionSuccessAsync({ from: possibleSigner });
+                await feeToken.mint(possibleSigner, MAX_FEE_AMOUNT).awaitTransactionSuccessAsync();
+            }
+        }
     });
 
     function getRandomMetaTransaction(fields: Partial<MetaTransactionFields> = {}): MetaTransaction {
         return new MetaTransaction({
             signer: _.sampleSize(signers)[0],
             sender,
-            minGasPrice: getRandomInteger('2', '1e9'),
+            // TODO: dekz Ganache gasPrice opcode is returning 0, cannot influence it up to test this case
+            minGasPrice: ZERO_AMOUNT,
             maxGasPrice: getRandomInteger('1e9', '100e9'),
             expirationTimeSeconds: new BigNumber(Math.floor(_.now() / 1000) + 360),
             salt: new BigNumber(hexUtils.random()),
@@ -145,6 +152,7 @@ blockchainTests.resets('MetaTransactions feature', env => {
                 gasPrice: mtx.minGasPrice,
                 value: mtx.value,
             };
+
             const rawResult = await feature.executeMetaTransaction(mtx, signature).callAsync(callOpts);
             expect(rawResult).to.eq(RAW_ORDER_SUCCESS_RESULT);
             const receipt = await feature.executeMetaTransaction(mtx, signature).awaitTransactionSuccessAsync(callOpts);
@@ -434,7 +442,8 @@ blockchainTests.resets('MetaTransactions feature', env => {
             );
         });
 
-        it('fails if gas price too low', async () => {
+        // Ganache gasPrice opcode is returning 0, cannot influence it up to test this case
+        it.skip('fails if gas price too low', async () => {
             const mtx = getRandomMetaTransaction();
             const mtxHash = mtx.getHash();
             const signature = await mtx.getSignatureWithProviderAsync(env.provider);
@@ -453,7 +462,8 @@ blockchainTests.resets('MetaTransactions feature', env => {
             );
         });
 
-        it('fails if gas price too high', async () => {
+        // Ganache gasPrice opcode is returning 0, cannot influence it up to test this case
+        it.skip('fails if gas price too high', async () => {
             const mtx = getRandomMetaTransaction();
             const mtxHash = mtx.getHash();
             const signature = await mtx.getSignatureWithProviderAsync(env.provider);

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

@@ -938,7 +938,8 @@ blockchainTests.resets('NativeOrdersFeature', env => {
             );
         });
 
-        it('fails if no protocol fee attached', async () => {
+        // TODO: dekz Ganache gasPrice opcode is returning 0, cannot influence it up to test this case
+        it.skip('fails if no protocol fee attached', async () => {
             const order = getTestLimitOrder();
             await testUtils.prepareBalancesForOrdersAsync([order]);
             const tx = zeroEx

contracts/zero-ex/test/protocol_fees_test.ts

@@ -10,7 +10,8 @@ import {
     TestWethContract,
 } from './wrappers';
 
-blockchainTests.resets('ProtocolFees', env => {
+// TODO: dekz Ganache gasPrice opcode is returning 0, cannot influence it up to test this case
+blockchainTests.resets.skip('ProtocolFees', env => {
     const FEE_MULTIPLIER = 70e3;
     let taker: string;
     let unauthorized: string;
@@ -62,7 +63,7 @@ blockchainTests.resets('ProtocolFees', env => {
         it('should disallow unauthorized initialization', async () => {
             const pool = hexUtils.random();
 
-            await protocolFees.collectProtocolFee(pool).awaitTransactionSuccessAsync({ value: singleFeeAmount });
+            await protocolFees.collectProtocolFee(pool).awaitTransactionSuccessAsync({ value: 1e9 });
             await protocolFees.transferFeesForPool(pool).awaitTransactionSuccessAsync();
 
             const feeCollector = new FeeCollectorContract(
@@ -89,6 +90,7 @@ blockchainTests.resets('ProtocolFees', env => {
             feeCollector2Address = await protocolFees.getFeeCollector(pool2).callAsync();
         });
 
+        // Ganache gasPrice opcode is returning 0, cannot influence it up to test this case
         it('should revert if insufficient ETH transferred', async () => {
             const tooLittle = singleFeeAmount.minus(1);
             const tx = protocolFees.collectProtocolFee(pool1).awaitTransactionSuccessAsync({ value: tooLittle });

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

@@ -28,7 +28,7 @@ import { artifacts } from '../artifacts';
 import { TestFillQuoteTransformerBridgeContract } from '../generated-wrappers/test_fill_quote_transformer_bridge';
 import { getRandomLimitOrder, getRandomRfqOrder } from '../utils/orders';
 import {
-    BridgeAdapterContract,
+    EthereumBridgeAdapterContract,
     FillQuoteTransformerContract,
     TestFillQuoteTransformerExchangeContract,
     TestFillQuoteTransformerHostContract,
@@ -52,7 +52,8 @@ blockchainTests.resets('FillQuoteTransformer', env => {
     let singleProtocolFee: BigNumber;
 
     const GAS_PRICE = 1337;
-    const TEST_BRIDGE_SOURCE = hexUtils.random(32);
+    // Left half is 0, corresponding to BridgeProtocol.Unknown
+    const TEST_BRIDGE_SOURCE = hexUtils.leftPad(hexUtils.random(16), 32);
     const HIGH_BIT = new BigNumber(2).pow(255);
     const REVERT_AMOUNT = new BigNumber('0xdeadbeef');
 
@@ -64,8 +65,8 @@ blockchainTests.resets('FillQuoteTransformer', env => {
             env.txDefaults,
             artifacts,
         );
-        const bridgeAdapter = await BridgeAdapterContract.deployFrom0xArtifactAsync(
-            artifacts.BridgeAdapter,
+        const bridgeAdapter = await EthereumBridgeAdapterContract.deployFrom0xArtifactAsync(
+            artifacts.EthereumBridgeAdapter,
             env.provider,
             env.txDefaults,
             artifacts,

contracts/zero-ex/test/wrappers.ts

@@ -3,15 +3,20 @@
  * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
  * -----------------------------------------------------------------------------
  */
+export * from '../test/generated-wrappers/abstract_bridge_adapter';
 export * from '../test/generated-wrappers/affiliate_fee_transformer';
+export * from '../test/generated-wrappers/avalanche_bridge_adapter';
+export * from '../test/generated-wrappers/b_s_c_bridge_adapter';
 export * from '../test/generated-wrappers/batch_fill_native_orders_feature';
 export * from '../test/generated-wrappers/bootstrap_feature';
-export * from '../test/generated-wrappers/bridge_adapter';
 export * from '../test/generated-wrappers/bridge_protocols';
+export * from '../test/generated-wrappers/celo_bridge_adapter';
 export * from '../test/generated-wrappers/curve_liquidity_provider';
 export * from '../test/generated-wrappers/erc1155_orders_feature';
 export * from '../test/generated-wrappers/erc165_feature';
 export * from '../test/generated-wrappers/erc721_orders_feature';
+export * from '../test/generated-wrappers/ethereum_bridge_adapter';
+export * from '../test/generated-wrappers/fantom_bridge_adapter';
 export * from '../test/generated-wrappers/fee_collector';
 export * from '../test/generated-wrappers/fee_collector_controller';
 export * from '../test/generated-wrappers/fill_quote_transformer';
@@ -101,7 +106,7 @@ export * from '../test/generated-wrappers/mixin_balancer';
 export * from '../test/generated-wrappers/mixin_balancer_v2';
 export * from '../test/generated-wrappers/mixin_balancer_v2_batch';
 export * from '../test/generated-wrappers/mixin_bancor';
-export * from '../test/generated-wrappers/mixin_co_fi_x';
+export * from '../test/generated-wrappers/mixin_bancor_v3';
 export * from '../test/generated-wrappers/mixin_compound';
 export * from '../test/generated-wrappers/mixin_crypto_com';
 export * from '../test/generated-wrappers/mixin_curve';
@@ -109,19 +114,19 @@ export * from '../test/generated-wrappers/mixin_curve_v2';
 export * from '../test/generated-wrappers/mixin_dodo';
 export * from '../test/generated-wrappers/mixin_dodo_v2';
 export * from '../test/generated-wrappers/mixin_g_m_x';
-export * from '../test/generated-wrappers/mixin_kyber';
 export * from '../test/generated-wrappers/mixin_kyber_dmm';
 export * from '../test/generated-wrappers/mixin_lido';
 export * from '../test/generated-wrappers/mixin_m_stable';
 export * from '../test/generated-wrappers/mixin_maker_p_s_m';
 export * from '../test/generated-wrappers/mixin_mooniswap';
 export * from '../test/generated-wrappers/mixin_nerve';
-export * from '../test/generated-wrappers/mixin_oasis';
 export * from '../test/generated-wrappers/mixin_platypus';
 export * from '../test/generated-wrappers/mixin_shell';
+export * from '../test/generated-wrappers/mixin_synthetix';
 export * from '../test/generated-wrappers/mixin_uniswap';
 export * from '../test/generated-wrappers/mixin_uniswap_v2';
 export * from '../test/generated-wrappers/mixin_uniswap_v3';
+export * from '../test/generated-wrappers/mixin_velodrome';
 export * from '../test/generated-wrappers/mixin_zero_ex_bridge';
 export * from '../test/generated-wrappers/mooniswap_liquidity_provider';
 export * from '../test/generated-wrappers/multiplex_feature';
@@ -137,11 +142,13 @@ export * from '../test/generated-wrappers/native_orders_feature';
 export * from '../test/generated-wrappers/native_orders_info';
 export * from '../test/generated-wrappers/native_orders_protocol_fees';
 export * from '../test/generated-wrappers/native_orders_settlement';
+export * from '../test/generated-wrappers/optimism_bridge_adapter';
 export * from '../test/generated-wrappers/otc_orders_feature';
 export * from '../test/generated-wrappers/ownable_feature';
 export * from '../test/generated-wrappers/pancake_swap_feature';
 export * from '../test/generated-wrappers/pay_taker_transformer';
 export * from '../test/generated-wrappers/permissionless_transformer_deployer';
+export * from '../test/generated-wrappers/polygon_bridge_adapter';
 export * from '../test/generated-wrappers/positive_slippage_fee_transformer';
 export * from '../test/generated-wrappers/simple_function_registry_feature';
 export * from '../test/generated-wrappers/test_bridge';

contracts/zero-ex/tsconfig.json

@@ -4,9 +4,13 @@
     "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*", "./scripts/**/*"],
     "files": [
         "generated-artifacts/AffiliateFeeTransformer.json",
+        "generated-artifacts/AvalancheBridgeAdapter.json",
+        "generated-artifacts/BSCBridgeAdapter.json",
         "generated-artifacts/BatchFillNativeOrdersFeature.json",
-        "generated-artifacts/BridgeAdapter.json",
+        "generated-artifacts/CeloBridgeAdapter.json",
         "generated-artifacts/CurveLiquidityProvider.json",
+        "generated-artifacts/EthereumBridgeAdapter.json",
+        "generated-artifacts/FantomBridgeAdapter.json",
         "generated-artifacts/FeeCollector.json",
         "generated-artifacts/FeeCollectorController.json",
         "generated-artifacts/FillQuoteTransformer.json",
@@ -28,23 +32,30 @@
         "generated-artifacts/MetaTransactionsFeature.json",
         "generated-artifacts/MultiplexFeature.json",
         "generated-artifacts/NativeOrdersFeature.json",
+        "generated-artifacts/OptimismBridgeAdapter.json",
         "generated-artifacts/OtcOrdersFeature.json",
         "generated-artifacts/OwnableFeature.json",
         "generated-artifacts/PayTakerTransformer.json",
+        "generated-artifacts/PolygonBridgeAdapter.json",
         "generated-artifacts/PositiveSlippageFeeTransformer.json",
         "generated-artifacts/SimpleFunctionRegistryFeature.json",
         "generated-artifacts/TransformERC20Feature.json",
         "generated-artifacts/WethTransformer.json",
         "generated-artifacts/ZeroEx.json",
+        "test/generated-artifacts/AbstractBridgeAdapter.json",
         "test/generated-artifacts/AffiliateFeeTransformer.json",
+        "test/generated-artifacts/AvalancheBridgeAdapter.json",
+        "test/generated-artifacts/BSCBridgeAdapter.json",
         "test/generated-artifacts/BatchFillNativeOrdersFeature.json",
         "test/generated-artifacts/BootstrapFeature.json",
-        "test/generated-artifacts/BridgeAdapter.json",
         "test/generated-artifacts/BridgeProtocols.json",
+        "test/generated-artifacts/CeloBridgeAdapter.json",
         "test/generated-artifacts/CurveLiquidityProvider.json",
         "test/generated-artifacts/ERC1155OrdersFeature.json",
         "test/generated-artifacts/ERC165Feature.json",
         "test/generated-artifacts/ERC721OrdersFeature.json",
+        "test/generated-artifacts/EthereumBridgeAdapter.json",
+        "test/generated-artifacts/FantomBridgeAdapter.json",
         "test/generated-artifacts/FeeCollector.json",
         "test/generated-artifacts/FeeCollectorController.json",
         "test/generated-artifacts/FillQuoteTransformer.json",
@@ -134,7 +145,7 @@
         "test/generated-artifacts/MixinBalancerV2.json",
         "test/generated-artifacts/MixinBalancerV2Batch.json",
         "test/generated-artifacts/MixinBancor.json",
-        "test/generated-artifacts/MixinCoFiX.json",
+        "test/generated-artifacts/MixinBancorV3.json",
         "test/generated-artifacts/MixinCompound.json",
         "test/generated-artifacts/MixinCryptoCom.json",
         "test/generated-artifacts/MixinCurve.json",
@@ -142,19 +153,19 @@
         "test/generated-artifacts/MixinDodo.json",
         "test/generated-artifacts/MixinDodoV2.json",
         "test/generated-artifacts/MixinGMX.json",
-        "test/generated-artifacts/MixinKyber.json",
         "test/generated-artifacts/MixinKyberDmm.json",
         "test/generated-artifacts/MixinLido.json",
         "test/generated-artifacts/MixinMStable.json",
         "test/generated-artifacts/MixinMakerPSM.json",
         "test/generated-artifacts/MixinMooniswap.json",
         "test/generated-artifacts/MixinNerve.json",
-        "test/generated-artifacts/MixinOasis.json",
         "test/generated-artifacts/MixinPlatypus.json",
         "test/generated-artifacts/MixinShell.json",
+        "test/generated-artifacts/MixinSynthetix.json",
         "test/generated-artifacts/MixinUniswap.json",
         "test/generated-artifacts/MixinUniswapV2.json",
         "test/generated-artifacts/MixinUniswapV3.json",
+        "test/generated-artifacts/MixinVelodrome.json",
         "test/generated-artifacts/MixinZeroExBridge.json",
         "test/generated-artifacts/MooniswapLiquidityProvider.json",
         "test/generated-artifacts/MultiplexFeature.json",
@@ -170,11 +181,13 @@
         "test/generated-artifacts/NativeOrdersInfo.json",
         "test/generated-artifacts/NativeOrdersProtocolFees.json",
         "test/generated-artifacts/NativeOrdersSettlement.json",
+        "test/generated-artifacts/OptimismBridgeAdapter.json",
         "test/generated-artifacts/OtcOrdersFeature.json",
         "test/generated-artifacts/OwnableFeature.json",
         "test/generated-artifacts/PancakeSwapFeature.json",
         "test/generated-artifacts/PayTakerTransformer.json",
         "test/generated-artifacts/PermissionlessTransformerDeployer.json",
+        "test/generated-artifacts/PolygonBridgeAdapter.json",
         "test/generated-artifacts/PositiveSlippageFeeTransformer.json",
         "test/generated-artifacts/SimpleFunctionRegistryFeature.json",
         "test/generated-artifacts/TestBridge.json",

package.json

@@ -52,10 +52,10 @@
     },
     "config": {
         "contractsPackages": "@0x/contracts-erc20 @0x/contracts-test-utils @0x/contracts-utils @0x/contracts-zero-ex @0x/contracts-treasury",
-        "nonContractPackages": "@0x/migrations @0x/contract-wrappers @0x/contract-addresses @0x/contract-artifacts @0x/contract-wrappers-test @0x/asset-swapper",
+        "nonContractPackages": "@0x/contract-wrappers @0x/contract-addresses @0x/contract-artifacts @0x/contract-wrappers-test @0x/asset-swapper",
         "ignoreTestsForPackages": "",
         "mnemonic": "concert load couple harbor equip island argue ramp clarify fence smart topic",
-        "packagesWithDocPages": "@0x/contract-wrappers @0x/migrations",
+        "packagesWithDocPages": "@0x/contract-wrappers",
         "ignoreDependencyVersions": "@types/styled-components @types/node",
         "ignoreDependencyVersionsForPackage": "contract-wrappers"
     },
@@ -75,7 +75,6 @@
         "wsrun": "^5.2.4"
     },
     "resolutions": {
-        "merkle-patricia-tree": "3.0.0",
         "**/bignumber.js": "^9.0.2"
     }
 }

packages/asset-swapper/CHANGELOG.json

@@ -1,4 +1,189 @@
 [
+    {
+        "version": "16.66.4",
+        "changes": [
+            {
+                "note": "Offboard Cream",
+                "pr": 546
+            },
+            {
+                "note": "Change WooFi gas estimates",
+                "pr": 551
+            }
+        ]
+    },
+    {
+        "timestamp": 1660093941,
+        "version": "16.66.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "16.66.2",
+        "changes": [
+            {
+                "note": "Upgrade dependency",
+                "pr": 543
+            }
+        ],
+        "timestamp": 1660073235
+    },
+    {
+        "version": "16.66.1",
+        "changes": [
+            {
+                "note": "Upgrade dependency",
+                "pr": 538
+            }
+        ],
+        "timestamp": 1659926840
+    },
+    {
+        "version": "16.66.0",
+        "changes": [
+            {
+                "note": "Add WOOFi support",
+                "pr": 513
+            }
+        ],
+        "timestamp": 1659750766
+    },
+    {
+        "version": "16.65.0",
+        "changes": [
+            {
+                "note": "Use 0x gas api instead of eth gas station api",
+                "pr": 532
+            }
+        ],
+        "timestamp": 1659391840
+    },
+    {
+        "version": "16.64.0",
+        "changes": [
+            {
+                "note": "Refactor `TokenAdjacency` and `TokenAdjacencyBuilder`",
+                "pr": 517
+            },
+            {
+                "note": "Add Synthetix support`",
+                "pr": 518
+            },
+            {
+                "note": "Replace Beethoven X subgraph URL",
+                "pr": 519
+            },
+            {
+                "note": "Remove Mooniswap on Ethereum mainnet",
+                "pr": 529
+            }
+        ],
+        "timestamp": 1658950329
+    },
+    {
+        "version": "16.63.1",
+        "changes": [
+            {
+                "note": "Better error handling for balancer cache",
+                "pr": 515
+            }
+        ],
+        "timestamp": 1657661207
+    },
+    {
+        "version": "16.63.0",
+        "changes": [
+            {
+                "note": "Remove JS router",
+                "pr": 480
+            },
+            {
+                "note": "Removed Median price in favour of best gas adjusted price",
+                "pr": 480
+            }
+        ],
+        "timestamp": 1656491792
+    },
+    {
+        "version": "16.62.2",
+        "changes": [
+            {
+                "note": "Offboard Smoothy and ComethSwap",
+                "pr": 509
+            }
+        ]
+    },
+    {
+        "version": "16.62.1",
+        "changes": [
+            {
+                "note": "Remove nUSD from intermediate liquidity to save on sampler gas",
+                "pr": 505
+            }
+        ],
+        "timestamp": 1655253622
+    },
+    {
+        "version": "16.62.0",
+        "changes": [
+            {
+                "note": "Add MDEX on BSC",
+                "pr": 496
+            },
+            {
+                "note": "Add KnightSwap on BSC",
+                "pr": 498
+            },
+            {
+                "note": "Add Velodrome support on Optimism",
+                "pr": 494
+            },
+            {
+                "note": "Do not send empty entries on Quote Report",
+                "pr": 501
+            },
+            {
+                "note": "KnightSwap/Mdex cosmetic change",
+                "pr": 502
+            },
+            {
+                "note": "Offboard JetSwap, CafeSwap, JulSwap, and PolyDex",
+                "pr": 503
+            }
+        ],
+        "timestamp": 1655244958
+    },
+    {
+        "version": "16.61.0",
+        "changes": [
+            {
+                "note": "Add stETH wrap/unwrap support",
+                "pr": 476
+            },
+            {
+                "note": "Offboard/clean up Oasis, CoFix, and legacy Kyber",
+                "pr": 482
+            },
+            {
+                "note": "Add MeshSwap on Polygon",
+                "pr": 491
+            }
+        ],
+        "timestamp": 1654284040
+    },
+    {
+        "version": "16.60.1",
+        "changes": [
+            {
+                "note": "Alias Balancer sor to the old version",
+                "pr": 481
+            }
+        ],
+        "timestamp": 1652931596
+    },
     {
         "version": "16.60.0",
         "changes": [

packages/asset-swapper/CHANGELOG.md

@@ -5,6 +5,69 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v16.66.3 - _August 10, 2022_
+
+    * Dependencies updated
+
+## v16.66.2 - _August 9, 2022_
+
+    * Upgrade dependency (#543)
+
+## v16.66.1 - _August 8, 2022_
+
+    * Upgrade dependency (#538)
+
+## v16.66.0 - _August 6, 2022_
+
+    * Add WOOFi support (#513)
+
+## v16.65.0 - _August 1, 2022_
+
+    * Use 0x gas api instead of eth gas station api (#532)
+
+## v16.64.0 - _July 27, 2022_
+
+    * Refactor `TokenAdjacency` and `TokenAdjacencyBuilder` (#517)
+    * Add Synthetix support` (#518)
+    * Replace Beethoven X subgraph URL (#519)
+    * Remove Mooniswap on Ethereum mainnet (#529)
+
+## v16.63.1 - _July 12, 2022_
+
+    * Better error handling for balancer cache (#515)
+
+## v16.63.0 - _June 29, 2022_
+
+    * Remove JS router (#480)
+    * Removed Median price in favour of best gas adjusted price (#480)
+
+## v16.62.2 - _Invalid date_
+
+    * Offboard Smoothy and ComethSwap (#509)
+
+## v16.62.1 - _June 15, 2022_
+
+    * Remove nUSD from intermediate liquidity to save on sampler gas (#505)
+
+## v16.62.0 - _June 14, 2022_
+
+    * Add MDEX on BSC (#496)
+    * Add KnightSwap on BSC (#498)
+    * Add Velodrome support on Optimism (#494)
+    * Do not send empty entries on Quote Report (#501)
+    * KnightSwap/Mdex cosmetic change (#502)
+    * Offboard JetSwap, CafeSwap, JulSwap, and PolyDex (#503)
+
+## v16.61.0 - _June 3, 2022_
+
+    * Add stETH wrap/unwrap support (#476)
+    * Offboard/clean up Oasis, CoFix, and legacy Kyber (#482)
+    * Add MeshSwap on Polygon (#491)
+
+## v16.60.1 - _May 19, 2022_
+
+    * Alias Balancer sor to the old version (#481)
+
 ## v16.60.0 - _May 19, 2022_
 
     * Add BiSwap on BSC (#467)

packages/asset-swapper/contracts/src/BancorV3Sampler.sol

@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
+pragma experimental ABIEncoderV2;
+
+import "./interfaces/IBancorV3.sol";
+
+
+contract BancorV3Sampler
+{
+    /// @dev Gas limit for BancorV3 calls.
+    uint256 constant private BancorV3_CALL_GAS = 150e3; // 150k
+
+    address constant public ETH = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
+
+    /// @dev Sample sell quotes from BancorV3.
+    /// @param weth The WETH contract address
+    /// @param router Router to look up tokens and amounts
+    /// @param path Token route. Should be takerToken -> makerToken
+    /// @param takerTokenAmounts Taker token sell amount for each sample.
+    /// @return makerTokenAmounts Maker amounts bought at each taker token
+    ///         amount.
+    function sampleSellsFromBancorV3(
+        address weth,
+        address router,
+        address[] memory path,
+        uint256[] memory takerTokenAmounts
+    )
+        public
+        view
+        returns (uint256[] memory makerTokenAmounts)
+    {
+        uint256 numSamples = takerTokenAmounts.length;
+        makerTokenAmounts = new uint256[](numSamples);
+
+        if(path[0] == weth){
+            path[0] = ETH;
+        }
+        if(path[1] == weth){
+            path[1] = ETH;
+        }
+
+        for (uint256 i = 0; i < numSamples; i++) {
+            try
+                IBancorV3(router).tradeOutputBySourceAmount(path[0], path[1], takerTokenAmounts[i])
+                returns (uint256 amount)
+            {
+                makerTokenAmounts[i] = amount;
+                // Break early if there are 0 amounts
+                if (makerTokenAmounts[i] == 0) {
+                    break;
+                }
+            } catch (bytes memory) {
+                // Swallow failures, leaving all results as zero.
+                break;
+            }
+        }
+    }
+
+    /// @dev Sample buy quotes from BancorV3.
+    /// @param weth The WETH contract address
+    /// @param router Router to look up tokens and amounts
+    /// @param path Token route. Should be takerToken -> makerToken.
+    /// @param makerTokenAmounts Maker token buy amount for each sample.
+    /// @return takerTokenAmounts Taker amounts sold at each maker token
+    ///         amount.
+    function sampleBuysFromBancorV3(
+        address weth,
+        address router,
+        address[] memory path,
+        uint256[] memory makerTokenAmounts
+    )
+        public
+        view
+        returns (uint256[] memory takerTokenAmounts)
+    {
+        uint256 numSamples = makerTokenAmounts.length;
+        takerTokenAmounts = new uint256[](numSamples);
+
+        if(path[0] == weth){
+            path[0] = ETH;
+        }
+        if(path[1] == weth){
+            path[1] = ETH;
+        }
+
+        for (uint256 i = 0; i < numSamples; i++) {
+            try
+                IBancorV3(router).tradeInputByTargetAmount(path[0], path[1], makerTokenAmounts[i])
+                returns (uint256 amount)
+            {
+                takerTokenAmounts[i] = amount;
+                // Break early if there are 0 amounts
+                if (takerTokenAmounts[i] == 0) {
+                    break;
+                }
+            } catch (bytes memory) {
+                // Swallow failures, leaving all results as zero.
+                break;
+            }
+        }
+    }
+}

packages/asset-swapper/contracts/src/ERC20BridgeSampler.sol

@@ -24,12 +24,12 @@ import "./BalancerSampler.sol";
 import "./BalancerV2Sampler.sol";
 import "./BalancerV2BatchSampler.sol";
 import "./BancorSampler.sol";
+import "./BancorV3Sampler.sol";
 import "./CompoundSampler.sol";
 import "./CurveSampler.sol";
 import "./DODOSampler.sol";
 import "./DODOV2Sampler.sol";
 import "./GMXSampler.sol";
-import "./KyberSampler.sol";
 import "./KyberDmmSampler.sol";
 import "./LidoSampler.sol";
 import "./LiquidityProviderSampler.sol";
@@ -39,11 +39,13 @@ import "./MooniswapSampler.sol";
 import "./NativeOrderSampler.sol";
 import "./PlatypusSampler.sol";
 import "./ShellSampler.sol";
-import "./SmoothySampler.sol";
+import "./SynthetixSampler.sol";
 import "./TwoHopSampler.sol";
 import "./UniswapSampler.sol";
 import "./UniswapV2Sampler.sol";
 import "./UniswapV3Sampler.sol";
+import "./VelodromeSampler.sol";
+import "./WooPPSampler.sol";
 import "./UtilitySampler.sol";
 
 
@@ -52,12 +54,12 @@ contract ERC20BridgeSampler is
     BalancerV2Sampler,
     BalancerV2BatchSampler,
     BancorSampler,
+    BancorV3Sampler,
     CompoundSampler,
     CurveSampler,
     DODOSampler,
     DODOV2Sampler,
     GMXSampler,
-    KyberSampler,
     KyberDmmSampler,
     LidoSampler,
     LiquidityProviderSampler,
@@ -67,11 +69,13 @@ contract ERC20BridgeSampler is
     NativeOrderSampler,
     PlatypusSampler,
     ShellSampler,
-    SmoothySampler,
+    SynthetixSampler,
     TwoHopSampler,
     UniswapSampler,
     UniswapV2Sampler,
     UniswapV3Sampler,
+    VelodromeSampler,
+    WooPPSampler,
     UtilitySampler
 {
 

packages/asset-swapper/contracts/src/KyberSampler.sol

@@ -1,301 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-/*
-
-  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;
-pragma experimental ABIEncoderV2;
-
-import "./interfaces/IKyberNetwork.sol";
-import "./ApproximateBuys.sol";
-import "./SamplerUtils.sol";
-
-
-contract KyberSampler is
-    SamplerUtils,
-    ApproximateBuys
-{
-    /// @dev Gas limit for Kyber calls.
-    uint256 constant private KYBER_CALL_GAS = 500e3; // 500k
-    /// @dev Kyber ETH pseudo-address.
-    address constant internal KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
-
-    struct KyberSamplerOpts {
-        uint256 reserveOffset;
-        address hintHandler;
-        address networkProxy;
-        address weth;
-        bytes hint;
-    }
-
-    /// @dev Sample sell quotes from Kyber.
-    /// @param opts KyberSamplerOpts The nth reserve
-    /// @param takerToken Address of the taker token (what to sell).
-    /// @param makerToken Address of the maker token (what to buy).
-    /// @param takerTokenAmounts Taker token sell amount for each sample.
-    /// @return reserveId The id of the reserve found at reserveOffset
-    /// @return hint The hint for the selected reserve
-    /// @return makerTokenAmounts Maker amounts bought at each taker token amount.
-    function sampleSellsFromKyberNetwork(
-        KyberSamplerOpts memory opts,
-        address takerToken,
-        address makerToken,
-        uint256[] memory takerTokenAmounts
-    )
-        public
-        view
-        returns (bytes32 reserveId, bytes memory hint, uint256[] memory makerTokenAmounts)
-    {
-        _assertValidPair(makerToken, takerToken);
-        reserveId = _getNextReserveId(opts, takerToken, makerToken);
-        if (reserveId == 0x0) {
-            return (reserveId, hint, makerTokenAmounts);
-        }
-        opts.hint = this.encodeKyberHint(opts, reserveId, takerToken, makerToken);
-        hint = opts.hint;
-
-        uint256 numSamples = takerTokenAmounts.length;
-        makerTokenAmounts = new uint256[](numSamples);
-        for (uint256 i = 0; i < numSamples; i++) {
-            uint256 value = this.sampleSellFromKyberNetwork(
-                opts,
-                takerToken,
-                makerToken,
-                takerTokenAmounts[i]
-            );
-            makerTokenAmounts[i] = value;
-            // Break early if there are 0 amounts
-            if (makerTokenAmounts[i] == 0) {
-                break;
-            }
-        }
-    }
-
-    /// @dev Sample buy quotes from Kyber.
-    /// @param opts KyberSamplerOpts The nth reserve
-    /// @param takerToken Address of the taker token (what to sell).
-    /// @param makerToken Address of the maker token (what to buy).
-    /// @param makerTokenAmounts Maker token buy amount for each sample.
-    /// @return reserveId The id of the reserve found at reserveOffset
-    /// @return hint The hint for the selected reserve
-    /// @return takerTokenAmounts Taker amounts sold at each maker token amount.
-    function sampleBuysFromKyberNetwork(
-        KyberSamplerOpts memory opts,
-        address takerToken,
-        address makerToken,
-        uint256[] memory makerTokenAmounts
-    )
-        public
-        view
-        returns (bytes32 reserveId, bytes memory hint, uint256[] memory takerTokenAmounts)
-    {
-        _assertValidPair(makerToken, takerToken);
-
-        reserveId = _getNextReserveId(opts, takerToken, makerToken);
-        if (reserveId == 0x0) {
-            return (reserveId, hint, takerTokenAmounts);
-        }
-        opts.hint = this.encodeKyberHint(opts, reserveId, takerToken, makerToken);
-        hint = opts.hint;
-
-        takerTokenAmounts = _sampleApproximateBuys(
-            ApproximateBuyQuoteOpts({
-                makerTokenData: abi.encode(makerToken, opts),
-                takerTokenData: abi.encode(takerToken, opts),
-                getSellQuoteCallback: _sampleSellForApproximateBuyFromKyber
-            }),
-            makerTokenAmounts
-        );
-        return (reserveId, hint, takerTokenAmounts);
-    }
-
-    function encodeKyberHint(
-        KyberSamplerOpts memory opts,
-        bytes32 reserveId,
-        address takerToken,
-        address makerToken
-    )
-        public
-        view
-        returns (bytes memory hint)
-    {
-        // Build a hint selecting the single reserve
-        IKyberHintHandler kyberHint = IKyberHintHandler(opts.hintHandler);
-
-        // All other reserves should be ignored with this hint
-        bytes32[] memory selectedReserves = new bytes32[](1);
-        selectedReserves[0] = reserveId;
-        uint256[] memory emptySplits = new uint256[](0);
-
-        if (takerToken == opts.weth) {
-            // ETH to Token
-            try
-                kyberHint.buildEthToTokenHint
-                    {gas: KYBER_CALL_GAS}
-                    (
-                        makerToken,
-                        IKyberHintHandler.TradeType.MaskIn,
-                        selectedReserves,
-                        emptySplits
-                    )
-                returns (bytes memory result)
-            {
-                return result;
-            } catch (bytes memory) {
-                // Swallow failures, leaving all results as zero.
-            }
-        } else if (makerToken == opts.weth) {
-            // Token to ETH
-            try
-                kyberHint.buildTokenToEthHint
-                    {gas: KYBER_CALL_GAS}
-                    (
-                        takerToken,
-                        IKyberHintHandler.TradeType.MaskIn,
-                        selectedReserves,
-                        emptySplits
-                    )
-                returns (bytes memory result)
-            {
-                return result;
-            } catch (bytes memory) {
-                // Swallow failures, leaving all results as zero.
-            }
-
-        } else {
-            // Token to Token
-            // We use the same reserve both ways
-            try
-                kyberHint.buildTokenToTokenHint
-                    {gas: KYBER_CALL_GAS}
-                    (
-                        takerToken,
-                        IKyberHintHandler.TradeType.MaskIn,
-                        selectedReserves,
-                        emptySplits,
-                        makerToken,
-                        IKyberHintHandler.TradeType.MaskIn,
-                        selectedReserves,
-                        emptySplits
-                    )
-                returns (bytes memory result)
-            {
-                return result;
-            } catch (bytes memory) {
-                // Swallow failures, leaving all results as zero.
-            }
-        }
-    }
-
-    function _sampleSellForApproximateBuyFromKyber(
-        bytes memory takerTokenData,
-        bytes memory makerTokenData,
-        uint256 sellAmount
-    )
-        private
-        view
-        returns (uint256)
-    {
-        (address makerToken, KyberSamplerOpts memory opts) =
-            abi.decode(makerTokenData, (address, KyberSamplerOpts));
-        (address takerToken, ) =
-            abi.decode(takerTokenData, (address, KyberSamplerOpts));
-        try
-            this.sampleSellFromKyberNetwork
-                (opts, takerToken, makerToken, sellAmount)
-            returns (uint256 amount)
-        {
-            return amount;
-        } catch (bytes memory) {
-            // Swallow failures, leaving all results as zero.
-            return 0;
-        }
-    }
-
-    function sampleSellFromKyberNetwork(
-        KyberSamplerOpts memory opts,
-        address takerToken,
-        address makerToken,
-        uint256 takerTokenAmount
-    )
-        public
-        view
-        returns (uint256 makerTokenAmount)
-    {
-        // If there is no hint do not continue
-        if (opts.hint.length == 0) {
-            return 0;
-        }
-
-        try
-            IKyberNetworkProxy(opts.networkProxy).getExpectedRateAfterFee
-                {gas: KYBER_CALL_GAS}
-                (
-                    takerToken == opts.weth ? KYBER_ETH_ADDRESS : takerToken,
-                    makerToken == opts.weth ? KYBER_ETH_ADDRESS : makerToken,
-                    takerTokenAmount,
-                    0, // fee
-                    opts.hint
-                )
-            returns (uint256 rate)
-        {
-            uint256 makerTokenDecimals = _getTokenDecimals(makerToken);
-            uint256 takerTokenDecimals = _getTokenDecimals(takerToken);
-            makerTokenAmount =
-                rate *
-                takerTokenAmount *
-                10 ** makerTokenDecimals /
-                10 ** takerTokenDecimals /
-                10 ** 18;
-            return makerTokenAmount;
-        } catch (bytes memory) {
-            // Swallow failures, leaving all results as zero.
-            return 0;
-        }
-    }
-
-    function _getNextReserveId(
-        KyberSamplerOpts memory opts,
-        address takerToken,
-        address makerToken
-    )
-        internal
-        view
-        returns (bytes32 reserveId)
-    {
-        // Fetch the registered reserves for this pair
-        IKyberHintHandler kyberHint = IKyberHintHandler(opts.hintHandler);
-        (bytes32[] memory reserveIds, ,) = kyberHint.getTradingReserves(
-            takerToken == opts.weth ? KYBER_ETH_ADDRESS : takerToken,
-            makerToken == opts.weth ? KYBER_ETH_ADDRESS : makerToken,
-            true,
-            new bytes(0) // empty hint
-        );
-
-        if (opts.reserveOffset >= reserveIds.length) {
-            return 0x0;
-        }
-
-        reserveId = reserveIds[opts.reserveOffset];
-        // Ignore Kyber Bridged Reserves (0xbb)
-        if (uint256(reserveId >> 248) == 0xbb) {
-            return 0x0;
-        }
-
-        return reserveId;
-    }
-}

packages/asset-swapper/contracts/src/LidoSampler.sol

@@ -22,10 +22,18 @@ pragma experimental ABIEncoderV2;
 
 import "./SamplerUtils.sol";
 
+
+interface IWstETH {
+    function getWstETHByStETH(uint256 _stETHAmount) external view returns (uint256);
+    function getStETHByWstETH(uint256 _wstETHAmount) external view returns (uint256);
+}
+
+
 contract LidoSampler is SamplerUtils {
     struct LidoInfo {
         address stEthToken;
         address wethToken;
+        address wstEthToken;
     }
 
     /// @dev Sample sell quotes from Lido
@@ -42,20 +50,17 @@ contract LidoSampler is SamplerUtils {
         uint256[] memory takerTokenAmounts
     )
         public
-        pure
+        view
         returns (uint256[] memory)
     {
         _assertValidPair(makerToken, takerToken);
 
-        if (takerToken != lidoInfo.wethToken || makerToken != address(lidoInfo.stEthToken)) {
-            // Return 0 values if not selling WETH for stETH
-            uint256 numSamples = takerTokenAmounts.length;
-            uint256[] memory makerTokenAmounts = new uint256[](numSamples);
-            return makerTokenAmounts;
+        if (takerToken == lidoInfo.wethToken && makerToken == address(lidoInfo.stEthToken)) {
+            // Minting stETH is always 1:1 therefore we can just return the same amounts back.
+            return takerTokenAmounts;
         }
 
-        // Minting stETH is always 1:1 therefore we can just return the same amounts back
-        return takerTokenAmounts;
+        return _sampleSellsForWrapped(lidoInfo, takerToken, makerToken, takerTokenAmounts);
     }
 
     /// @dev Sample buy quotes from Lido.
@@ -72,20 +77,43 @@ contract LidoSampler is SamplerUtils {
         uint256[] memory makerTokenAmounts
     )
         public
-        pure
+        view
         returns (uint256[] memory)
     {
-        _assertValidPair(makerToken, takerToken);
-
-        if (takerToken != lidoInfo.wethToken || makerToken != address(lidoInfo.stEthToken)) {
-            // Return 0 values if not buying stETH for WETH
-            uint256 numSamples = makerTokenAmounts.length;
-            uint256[] memory takerTokenAmounts = new uint256[](numSamples);
-            return takerTokenAmounts;
+        if (takerToken == lidoInfo.wethToken && makerToken == address(lidoInfo.stEthToken)) {
+            // Minting stETH is always 1:1 therefore we can just return the same amounts back.
+            return makerTokenAmounts;
         }
 
-        // Minting stETH is always 1:1 therefore we can just return the same amounts back
-        return makerTokenAmounts;
+        // Swap out `makerToken` and `takerToken` and re-use `_sampleSellsForWrapped`.
+        return _sampleSellsForWrapped(lidoInfo, makerToken, takerToken, makerTokenAmounts);
     }
 
+    function _sampleSellsForWrapped(
+        LidoInfo memory lidoInfo,
+        address takerToken,
+        address makerToken,
+        uint256[] memory takerTokenAmounts
+    ) private view  returns (uint256[] memory) {
+        IWstETH wstETH = IWstETH(lidoInfo.wstEthToken);
+        uint256 numSamples = takerTokenAmounts.length;
+        uint256[] memory makerTokenAmounts = new uint256[](numSamples);
+
+        if (takerToken == lidoInfo.stEthToken && makerToken == lidoInfo.wstEthToken) {
+            for (uint256 i = 0; i < numSamples; i++) {
+                makerTokenAmounts[i] = wstETH.getWstETHByStETH(takerTokenAmounts[i]);
+            }
+            return makerTokenAmounts;
+        }
+
+        if (takerToken == lidoInfo.wstEthToken && makerToken == lidoInfo.stEthToken) {
+            for (uint256 i = 0; i < numSamples; i++) {
+                makerTokenAmounts[i] = wstETH.getStETHByWstETH(takerTokenAmounts[i]);
+            }
+            return makerTokenAmounts;
+        }
+
+        // Returns 0 values.
+        return makerTokenAmounts;
+    }
 }

packages/asset-swapper/contracts/src/SmoothySampler.sol

@@ -1,156 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-/*
-
-  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;
-pragma experimental ABIEncoderV2;
-
-// import "./interfaces/ISmoothy.sol";
-import "./ApproximateBuys.sol";
-import "./SamplerUtils.sol";
-import "./interfaces/ISmoothy.sol";
-
-contract SmoothySampler is
-    SamplerUtils,
-    ApproximateBuys
-{
-    /// @dev Information for sampling from smoothy sources.
-    struct SmoothyInfo {
-        address poolAddress;
-        bytes4 sellQuoteFunctionSelector;
-        bytes4 buyQuoteFunctionSelector;
-    }
-
-    /// @dev Base gas limit for Smoothy calls.
-    uint256 constant private SMOOTHY_CALL_GAS = 600e3;
-
-    /// @dev Sample sell quotes from Smoothy.
-    /// @param smoothyInfo Smoothy information specific to this token pair.
-    /// @param fromTokenIdx Index of the taker token (what to sell).
-    /// @param toTokenIdx Index of the maker token (what to buy).
-    /// @param takerTokenAmounts Taker token sell amount for each sample.
-    /// @return makerTokenAmounts Maker amounts bought at each taker token
-    ///         amount.
-    function sampleSellsFromSmoothy(
-        SmoothyInfo memory smoothyInfo,
-        int128 fromTokenIdx,
-        int128 toTokenIdx,
-        uint256[] memory takerTokenAmounts
-    )
-        public
-        view
-        returns (uint256[] memory makerTokenAmounts)
-    {
-        // Basically a Curve fork
-
-        // Smoothy only keep a percentage of its tokens available in reserve
-        uint256 poolReserveMakerAmount = ISmoothy(smoothyInfo.poolAddress).getBalance(uint256(toTokenIdx)) -
-                                         ISmoothy(smoothyInfo.poolAddress)._yBalances(uint256(toTokenIdx));
-        (, , , uint256 decimals) = ISmoothy(smoothyInfo.poolAddress).getTokenStats(uint256(toTokenIdx));
-        poolReserveMakerAmount = poolReserveMakerAmount/(10**(18-decimals));
-
-        uint256 numSamples = takerTokenAmounts.length;
-        makerTokenAmounts = new uint256[](numSamples);
-        for (uint256 i = 0; i < numSamples; i++) {
-            (bool didSucceed, bytes memory resultData) =
-                smoothyInfo.poolAddress.staticcall.gas(SMOOTHY_CALL_GAS)(
-                    abi.encodeWithSelector(
-                        smoothyInfo.sellQuoteFunctionSelector,
-                        fromTokenIdx,
-                        toTokenIdx,
-                        takerTokenAmounts[i]
-                    ));
-            uint256 buyAmount = 0;
-            if (didSucceed) {
-                buyAmount = abi.decode(resultData, (uint256));
-            }
-
-            // Make sure the quoted buyAmount is available in the pool reserve
-            if (buyAmount >= poolReserveMakerAmount) {
-                // Assign pool reserve amount for all higher samples to break early
-                for (uint256 j = i; j < numSamples; j++) {
-                    makerTokenAmounts[j] = poolReserveMakerAmount;
-                }
-                break;
-            } else {
-                makerTokenAmounts[i] = buyAmount;
-            }
-
-            // Break early if there are 0 amounts
-            if (makerTokenAmounts[i] == 0) {
-                break;
-            }
-        }
-    }
-
-    /// @dev Sample buy quotes from Smoothy.
-    /// @param smoothyInfo Smoothy information specific to this token pair.
-    /// @param fromTokenIdx Index of the taker token (what to sell).
-    /// @param toTokenIdx Index of the maker token (what to buy).
-    /// @param makerTokenAmounts Maker token buy amount for each sample.
-    /// @return takerTokenAmounts Taker amounts sold at each maker token
-    ///         amount.
-    function sampleBuysFromSmoothy(
-        SmoothyInfo memory smoothyInfo,
-        int128 fromTokenIdx,
-        int128 toTokenIdx,
-        uint256[] memory makerTokenAmounts
-    )
-        public
-        view
-        returns (uint256[] memory takerTokenAmounts)
-    {
-        // Buys not supported so approximate it.
-        return _sampleApproximateBuys(
-            ApproximateBuyQuoteOpts({
-                makerTokenData: abi.encode(toTokenIdx, smoothyInfo),
-                takerTokenData: abi.encode(fromTokenIdx, smoothyInfo),
-                getSellQuoteCallback: _sampleSellForApproximateBuyFromSmoothy
-            }),
-            makerTokenAmounts
-        );
-    }
-
-    function _sampleSellForApproximateBuyFromSmoothy(
-        bytes memory takerTokenData,
-        bytes memory makerTokenData,
-        uint256 sellAmount
-    )
-        private
-        view
-        returns (uint256 buyAmount)
-    {
-        (int128 takerTokenIdx, SmoothyInfo memory smoothyInfo) =
-            abi.decode(takerTokenData, (int128, SmoothyInfo));
-        (int128 makerTokenIdx) =
-            abi.decode(makerTokenData, (int128));
-        (bool success, bytes memory resultData) =
-            address(this).staticcall(abi.encodeWithSelector(
-                this.sampleSellsFromSmoothy.selector,
-                smoothyInfo,
-                takerTokenIdx,
-                makerTokenIdx,
-                _toSingleValueArray(sellAmount)
-            ));
-        if (!success) {
-            return 0;
-        }
-        // solhint-disable-next-line indent
-        return abi.decode(resultData, (uint256[]))[0];
-    }
-}

packages/asset-swapper/contracts/src/SynthetixSampler.sol

@@ -0,0 +1,173 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
+pragma experimental ABIEncoderV2;
+
+interface IReadProxyAddressResolver {
+    function target() external view returns (address);
+}
+
+interface IAddressResolver {
+    function getAddress(bytes32 name) external view returns (address);
+}
+
+interface IExchanger {
+    // Ethereum Mainnet
+    function getAmountsForAtomicExchange(
+        uint256 sourceAmount,
+        bytes32 sourceCurrencyKey,
+        bytes32 destinationCurrencyKey
+    )
+        external
+        view
+        returns (
+            uint256 amountReceived,
+            uint256 fee,
+            uint256 exchangeFeeRate
+        );
+
+    // Optimism
+    function getAmountsForExchange(
+        uint256 sourceAmount,
+        bytes32 sourceCurrencyKey,
+        bytes32 destinationCurrencyKey
+    )
+        external
+        view
+        returns (
+            uint256 amountReceived,
+            uint256 fee,
+            uint256 exchangeFeeRate
+        );
+}
+
+contract SynthetixSampler {
+
+    /// @dev Sample sell quotes from Synthetix Atomic Swap.
+    /// @param takerTokenSymbol Symbol (currency key) of the taker token (what to sell).
+    /// @param makerTokenSymbol Symbol (currency key) of the maker token (what to buy).
+    /// @param takerTokenAmounts Taker token sell amount for each sample (sorted in ascending order).
+    /// @return synthetix Synthetix address.
+    /// @return makerTokenAmounts Maker amounts bought at each taker token amount.
+    function sampleSellsFromSynthetix(
+        IReadProxyAddressResolver readProxy,
+        bytes32 takerTokenSymbol,
+        bytes32 makerTokenSymbol,
+        uint256[] memory takerTokenAmounts
+    ) public view returns (address synthetix, uint256[] memory makerTokenAmounts) {
+        synthetix = getSynthetixAddress(readProxy);
+        uint256 numSamples = takerTokenAmounts.length;
+        makerTokenAmounts = new uint256[](numSamples);
+        if (numSamples == 0) {
+            return (synthetix, makerTokenAmounts);
+        }
+
+        makerTokenAmounts[0] = exchange(
+            readProxy,
+            takerTokenAmounts[0],
+            takerTokenSymbol,
+            makerTokenSymbol
+        );
+
+        // Synthetix atomic swap has a fixed rate. Calculate the rest based on the first value (and save gas).
+        for (uint256 i = 1; i < numSamples; i++) {
+            makerTokenAmounts[i] =
+                (makerTokenAmounts[0] * takerTokenAmounts[i]) /
+                takerTokenAmounts[0];
+        }
+    }
+
+    /// @dev Sample buy quotes from Synthetix Atomic Swap.
+    /// @param takerTokenSymbol Symbol (currency key) of the taker token (what to sell).
+    /// @param makerTokenSymbol Symbol (currency key) of the maker token (what to buy).
+    /// @param makerTokenAmounts Maker token buy amount for each sample (sorted in ascending order).
+    /// @return synthetix Synthetix address.
+    /// @return takerTokenAmounts Taker amounts sold at each maker token amount.
+    function sampleBuysFromSynthetix(
+        IReadProxyAddressResolver readProxy,
+        bytes32 takerTokenSymbol,
+        bytes32 makerTokenSymbol,
+        uint256[] memory makerTokenAmounts
+    ) public view returns (address synthetix, uint256[] memory takerTokenAmounts) {
+        synthetix = getSynthetixAddress(readProxy);
+        // Since Synthetix atomic have a fixed rate, we can pick any reasonablely size takerTokenAmount (fixed to 1 ether here) and calculate the rest.
+        uint256 amountReceivedForEther = exchange(
+            readProxy,
+            1 ether,
+            takerTokenSymbol,
+            makerTokenSymbol
+        );
+
+        uint256 numSamples = makerTokenAmounts.length;
+        takerTokenAmounts = new uint256[](numSamples);
+
+        for (uint256 i = 0; i < numSamples; i++) {
+            takerTokenAmounts[i] =
+                (1 ether * makerTokenAmounts[i]) /
+                amountReceivedForEther;
+        }
+    }
+
+    function exchange(
+        IReadProxyAddressResolver readProxy,
+        uint256 sourceAmount,
+        bytes32 sourceCurrencyKey,
+        bytes32 destinationCurrencyKey
+    ) private view returns (uint256 amountReceived) {
+        IExchanger exchanger = getExchanger(readProxy);
+        uint256 chainId;
+        assembly {
+            chainId := chainid()
+        }
+
+        if (chainId == 1) {
+            (amountReceived, , ) = exchanger.getAmountsForAtomicExchange(
+                sourceAmount,
+                sourceCurrencyKey,
+                destinationCurrencyKey
+            );
+        } else {
+            (amountReceived, , ) = exchanger.getAmountsForExchange(
+                sourceAmount,
+                sourceCurrencyKey,
+                destinationCurrencyKey
+            );
+        }
+    }
+
+    function getSynthetixAddress(IReadProxyAddressResolver readProxy)
+        private
+        view
+        returns (address)
+    {
+        return IAddressResolver(readProxy.target()).getAddress("Synthetix");
+    }
+
+    function getExchanger(IReadProxyAddressResolver readProxy)
+        private
+        view
+        returns (IExchanger)
+    {
+        return
+            IExchanger(
+                IAddressResolver(readProxy.target()).getAddress("Exchanger")
+            );
+    }
+}

packages/asset-swapper/contracts/src/VelodromeSampler.sol

@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
+pragma experimental ABIEncoderV2;
+
+import './ApproximateBuys.sol';
+import './SamplerUtils.sol';
+
+struct VeloRoute {
+    address from;
+    address to;
+    bool stable;
+}
+
+interface IVelodromeRouter {
+    function getAmountOut(
+        uint256 amountIn,
+        address tokenIn,
+        address tokenOut
+    ) external view returns (uint256 amount, bool stable);
+
+    function getAmountsOut(uint256 amountIn, VeloRoute[] calldata routes)
+        external
+        view
+        returns (uint256[] memory amounts);
+}
+
+contract VelodromeSampler is SamplerUtils, ApproximateBuys {
+    /// @dev Sample sell quotes from Velodrome
+    /// @param router Address of Velodrome router.
+    /// @param takerToken Address of the taker token (what to sell).
+    /// @param makerToken Address of the maker token (what to buy).
+    /// @param takerTokenAmounts Taker token sell amount for each sample (sorted in ascending order).
+    /// @return stable Whether the pool is a stable pool (vs volatile).
+    /// @return makerTokenAmounts Maker amounts bought at each taker token amount.
+    function sampleSellsFromVelodrome(
+        IVelodromeRouter router,
+        address takerToken,
+        address makerToken,
+        uint256[] memory takerTokenAmounts
+    ) public view returns (bool stable, uint256[] memory makerTokenAmounts) {
+        _assertValidPair(makerToken, takerToken);
+        uint256 numSamples = takerTokenAmounts.length;
+        makerTokenAmounts = new uint256[](numSamples);
+
+        // Sampling should not mix stable and volatile pools.
+        // Find the most liquid pool based on max(takerTokenAmounts) and stick with it.
+        stable = _isMostLiquidPoolStablePool(router, takerToken, makerToken, takerTokenAmounts);
+        VeloRoute[] memory routes = new VeloRoute[](1);
+        routes[0] = VeloRoute({ from: takerToken, to: makerToken, stable: stable });
+
+        for (uint256 i = 0; i < numSamples; i++) {
+            makerTokenAmounts[i] = router.getAmountsOut(takerTokenAmounts[i], routes)[1];
+            // Break early if there are 0 amounts
+            if (makerTokenAmounts[i] == 0) {
+                break;
+            }
+        }
+    }
+
+    /// @dev Sample buy quotes from Velodrome.
+    /// @param router Address of Velodrome router.
+    /// @param takerToken Address of the taker token (what to sell).
+    /// @param makerToken Address of the maker token (what to buy).
+    /// @param makerTokenAmounts Maker token buy amount for each sample.
+    /// @return stable Whether the pool is a stable pool (vs volatile).
+    /// @return takerTokenAmounts Taker amounts sold at each maker token amount.
+    function sampleBuysFromVelodrome(
+        IVelodromeRouter router,
+        address takerToken,
+        address makerToken,
+        uint256[] memory makerTokenAmounts
+    ) public view returns (bool stable, uint256[] memory takerTokenAmounts) {
+        _assertValidPair(makerToken, takerToken);
+
+        // Sampling should not mix stable and volatile pools.
+        // Find the most liquid pool based on the reverse swap (maker -> taker) and stick with it.
+        stable = _isMostLiquidPoolStablePool(router, makerToken, takerToken, makerTokenAmounts);
+
+        takerTokenAmounts = _sampleApproximateBuys(
+            ApproximateBuyQuoteOpts({
+                takerTokenData: abi.encode(router, VeloRoute({ from: takerToken, to: makerToken, stable: stable })),
+                makerTokenData: abi.encode(router, VeloRoute({ from: makerToken, to: takerToken, stable: stable })),
+                getSellQuoteCallback: _sampleSellForApproximateBuyFromVelodrome
+            }),
+            makerTokenAmounts
+        );
+    }
+
+    function _sampleSellForApproximateBuyFromVelodrome(
+        bytes memory takerTokenData,
+        bytes memory, /* makerTokenData */
+        uint256 sellAmount
+    ) internal view returns (uint256) {
+        (IVelodromeRouter router, VeloRoute memory route) = abi.decode(takerTokenData, (IVelodromeRouter, VeloRoute));
+
+        VeloRoute[] memory routes = new VeloRoute[](1);
+        routes[0] = route;
+        return router.getAmountsOut(sellAmount, routes)[1];
+    }
+
+    /// @dev Returns whether the most liquid pool is a stable pool.
+    /// @param router Address of Velodrome router.
+    /// @param takerToken Address of the taker token (what to sell).
+    /// @param makerToken Address of the maker token (what to buy).
+    /// @param takerTokenAmounts Taker token buy amount for each sample (sorted in ascending order)
+    /// @return stable Whether the pool is a stable pool (vs volatile).
+    function _isMostLiquidPoolStablePool(
+        IVelodromeRouter router,
+        address takerToken,
+        address makerToken,
+        uint256[] memory takerTokenAmounts
+    ) internal view returns (bool stable) {
+        uint256 numSamples = takerTokenAmounts.length;
+        (, stable) = router.getAmountOut(takerTokenAmounts[numSamples - 1], takerToken, makerToken);
+    }
+}

packages/asset-swapper/contracts/src/WooPPSampler.sol

@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.6;
+pragma experimental ABIEncoderV2;
+import "./SamplerUtils.sol";
+import "./ApproximateBuys.sol";
+
+interface IWooPP {
+    /// @dev get the quote token address (immutable)
+    /// @return address of quote token
+    function quoteToken() external view returns (address);
+
+    /// @dev Query the amount for selling the base token amount.
+    /// @param baseToken the base token to sell
+    /// @param baseAmount the amount to sell
+    /// @return quoteAmount the swapped quote amount
+    function querySellBase(address baseToken, uint256 baseAmount) external view returns (uint256 quoteAmount);
+
+    /// @dev Query the amount for selling the quote token.
+    /// @param baseToken the base token to receive (buy)
+    /// @param quoteAmount the amount to sell
+    /// @return baseAmount the swapped base token amount
+    function querySellQuote(address baseToken, uint256 quoteAmount) external view returns (uint256 baseAmount);
+}
+
+contract WooPPSampler is SamplerUtils, ApproximateBuys{
+
+   function query(
+        uint amountIn, 
+        address tokenIn, 
+        address tokenOut,
+        address pool
+    ) internal view returns (uint256 amountOut) {
+        if (amountIn == 0) { 
+            return 0; 
+        }
+        address quoteToken = IWooPP(pool).quoteToken();
+        if (tokenIn == quoteToken) {
+            amountOut = IWooPP(pool).querySellQuote(tokenOut, amountIn);
+        } else if (tokenOut == quoteToken) {
+            amountOut = IWooPP(pool).querySellBase(tokenIn, amountIn);
+        } else {
+            uint quoteAmount = IWooPP(pool).querySellBase(tokenIn, amountIn);
+            amountOut = IWooPP(pool).querySellQuote(tokenOut, quoteAmount);
+        }
+    }
+
+    /// @dev Sample sell quotes from WooFI.
+    /// @param pool Address of the pool we are sampling from
+    /// @param takerToken Address of the taker token (what to sell).
+    /// @param makerToken Address of the maker token (what to buy).
+    /// @param takerTokenAmounts Taker token sell amount for each sample (sorted in ascending order).
+    /// @return makerTokenAmounts Maker amounts bought at each taker token
+    ///         amount.
+    function sampleSellsFromWooPP(
+        address pool,
+        address takerToken,
+        address makerToken,
+        uint256[] memory takerTokenAmounts
+    )
+        public
+        view
+        returns (uint256[] memory makerTokenAmounts)
+        {
+            uint256 numSamples = takerTokenAmounts.length;
+            makerTokenAmounts = new uint256[](numSamples);
+            for (uint256 i = 0; i < numSamples; i++) {
+                makerTokenAmounts[i] = query(takerTokenAmounts[i], takerToken, makerToken, pool);
+
+                if (makerTokenAmounts[i] == 0) {
+                    break;
+                }
+            }
+        }
+
+    /// @dev Sample buy quotes from WooFI.
+    /// @param pool Address of the pool we are sampling from
+    /// @param takerToken Address of the taker token (what to sell).
+    /// @param makerToken Address of the maker token (what to buy).
+    /// @param makerTokenAmounts Maker token sell amount for each sample (sorted in ascending order).
+    /// @return takerTokenAmounts Taker amounts bought at each taker token
+    ///         amount.
+    function sampleBuysFromWooPP(
+        address pool,
+        address takerToken,
+        address makerToken,
+        uint256[] memory makerTokenAmounts
+    )
+        public
+        view
+        returns (uint256[] memory takerTokenAmounts)
+    {
+        uint256 numSamples = makerTokenAmounts.length;
+        takerTokenAmounts = _sampleApproximateBuys(
+            ApproximateBuyQuoteOpts({
+                takerTokenData: abi.encode(pool,takerToken, makerToken),
+                makerTokenData: abi.encode(pool, makerToken, takerToken),
+                getSellQuoteCallback: _sampleSellForApproximateBuyFromWoofi
+            }),
+            makerTokenAmounts
+        );
+    }
+
+    function _sampleSellForApproximateBuyFromWoofi(
+        bytes memory takerTokenData,
+        bytes memory makerTokenData,
+        uint256 sellAmount
+    ) internal view returns (uint256) {
+        (address _pool, address _takerToken, address _makerToken) = abi.decode(takerTokenData, (address, address, address));
+        (bool success, bytes memory resultData) = address(this).staticcall(abi.encodeWithSelector(
+            this.sampleSellsFromWooPP.selector,
+            _pool,
+            _takerToken,
+            _makerToken,
+            _toSingleValueArray(sellAmount)
+        ));
+        if(!success) {
+            return 0;
+        }
+        return abi.decode(resultData, (uint256[]))[0];
+    }
+}

packages/asset-swapper/contracts/src/interfaces/IBancorV3.sol

@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
+pragma experimental ABIEncoderV2;
+
+interface IBancorV3 {
+
+    /**
+     * @dev returns the output amount when trading by providing the source amount
+     */
+    function tradeOutputBySourceAmount(
+        address sourceToken,
+        address targetToken,
+        uint256 sourceAmount
+    ) external view returns (uint256);
+
+    /**
+     * @dev returns the input amount when trading by providing the target amount
+     */
+    function tradeInputByTargetAmount(
+        address sourceToken,
+        address targetToken,
+        uint256 targetAmount
+    ) external view returns (uint256);
+
+}

packages/asset-swapper/contracts/src/interfaces/IKyberNetwork.sol

@@ -1,96 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-/*
-
-  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;
-
-// Keepin everything together
-interface IKyberNetwork {
-
-
-}
-
-
-interface IKyberNetworkProxy {
-
-    function getExpectedRateAfterFee(
-        address src,
-        address dest,
-        uint256 srcQty,
-        uint256 platformFeeBps,
-        bytes calldata hint
-    )
-        external
-        view
-        returns (uint256 expectedRate);
-}
-
-interface IKyberHintHandler {
-
-    enum TradeType {BestOfAll, MaskIn, MaskOut, Split}
-
-    enum ProcessWithRate {NotRequired, Required}
-
-    function getTradingReserves(
-        address tokenSrc,
-        address tokenDest,
-        bool isTokenToToken,
-        bytes calldata hint
-    )
-        external
-        view
-        returns (
-            bytes32[] memory reserveIds,
-            uint256[] memory splitValuesBps,
-            ProcessWithRate processWithRate
-        );
-
-    function buildTokenToEthHint(
-        address tokenSrc,
-        TradeType tokenToEthType,
-        bytes32[] calldata tokenToEthReserveIds,
-        uint256[] calldata tokenToEthSplits
-    )
-        external
-        view
-        returns (bytes memory hint);
-
-    function buildEthToTokenHint(
-        address tokenDest,
-        TradeType ethToTokenType,
-        bytes32[] calldata ethToTokenReserveIds,
-        uint256[] calldata ethToTokenSplits
-    )
-        external
-        view
-        returns (bytes memory hint);
-
-    function buildTokenToTokenHint(
-        address tokenSrc,
-        TradeType tokenToEthType,
-        bytes32[] calldata tokenToEthReserveIds,
-        uint256[] calldata tokenToEthSplits,
-        address tokenDest,
-        TradeType ethToTokenType,
-        bytes32[] calldata ethToTokenReserveIds,
-        uint256[] calldata ethToTokenSplits
-    )
-        external
-        view
-        returns (bytes memory hint);
-}

packages/asset-swapper/docs/reference.mdx

@@ -1897,7 +1897,7 @@ ___
 
 # Interface: SwapQuoteRequestOpts
 
-slippagePercentage: The percentage buffer to add to account for slippage. Affects max ETH price estimates. Defaults to 0.2 (20%).
+slippagePercentage: The percentage buffer to add to account for slippage. Affects max ETH price estimates. Defaults to 0.01 (1%).
 gasPrice: gas price to determine protocolFee amount, default to ethGasStation fast amount
 
 

packages/asset-swapper/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/asset-swapper",
-    "version": "16.60.0",
+    "version": "16.66.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -34,12 +34,13 @@
         "contracts:gen": "contracts-gen generate",
         "contracts:copy": "contracts-gen copy",
         "publish:private": "yarn build && gitpkg publish",
-        "sampler-size": "jq .compilerOutput.evm.deployedBytecode.object  -- test/generated-artifacts/ERC20BridgeSampler.json | echo $(( $(wc -c) / 2 - 1 ))"
+        "sampler-size": "jq .compilerOutput.evm.deployedBytecode.object  -- test/generated-artifacts/ERC20BridgeSampler.json | echo $(( $(wc -c) / 2 - 1 ))",
+        "list:deps": "yarn lerna list -l"
     },
     "config": {
         "publicInterfaceContracts": "ERC20BridgeSampler,BalanceChecker,FakeTaker",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually.",
-        "abis": "./test/generated-artifacts/@(ApproximateBuys|BalanceChecker|BalancerSampler|BalancerV2BatchSampler|BalancerV2Common|BalancerV2Sampler|BancorSampler|CompoundSampler|CurveSampler|DODOSampler|DODOV2Sampler|ERC20BridgeSampler|FakeTaker|GMXSampler|IBalancer|IBalancerV2Vault|IBancor|ICurve|IGMX|IKyberNetwork|IMStable|IMooniswap|IMultiBridge|IPlatypus|IShell|ISmoothy|IUniswapExchangeQuotes|IUniswapV2Router01|KyberDmmSampler|KyberSampler|LidoSampler|LiquidityProviderSampler|MStableSampler|MakerPSMSampler|MooniswapSampler|NativeOrderSampler|PlatypusSampler|SamplerUtils|ShellSampler|SmoothySampler|TestNativeOrderSampler|TwoHopSampler|UniswapSampler|UniswapV2Sampler|UniswapV3Sampler|UtilitySampler).json",
+        "abis": "./test/generated-artifacts/@(ApproximateBuys|BalanceChecker|BalancerSampler|BalancerV2BatchSampler|BalancerV2Common|BalancerV2Sampler|BancorSampler|BancorV3Sampler|CompoundSampler|CurveSampler|DODOSampler|DODOV2Sampler|ERC20BridgeSampler|FakeTaker|GMXSampler|IBalancer|IBalancerV2Vault|IBancor|IBancorV3|ICurve|IGMX|IMStable|IMooniswap|IMultiBridge|IPlatypus|IShell|IUniswapExchangeQuotes|IUniswapV2Router01|KyberDmmSampler|LidoSampler|LiquidityProviderSampler|MStableSampler|MakerPSMSampler|MooniswapSampler|NativeOrderSampler|PlatypusSampler|SamplerUtils|ShellSampler|SynthetixSampler|TestNativeOrderSampler|TwoHopSampler|UniswapSampler|UniswapV2Sampler|UniswapV3Sampler|UtilitySampler|VelodromeSampler|WooPPSampler).json",
         "postpublish": {
             "assets": []
         }
@@ -58,23 +59,22 @@
         "registry": "git@github.com:0xProject/gitpkg-registry.git"
     },
     "dependencies": {
-        "@0x/assert": "^3.0.34",
-        "@0x/base-contract": "^6.5.0",
-        "@0x/contract-addresses": "^6.14.0",
-        "@0x/contract-wrappers": "^13.20.2",
-        "@0x/contracts-erc20": "^3.3.30",
-        "@0x/contracts-zero-ex": "^0.33.0",
-        "@0x/dev-utils": "^4.2.14",
+        "@0x/assert": "^3.0.35",
+        "@0x/base-contract": "^7.0.0",
+        "@0x/contract-addresses": "^6.19.2",
+        "@0x/contract-wrappers": "^13.20.8",
+        "@0x/contracts-erc20": "^3.3.36",
+        "@0x/contracts-zero-ex": "^0.36.3",
+        "@0x/dev-utils": "^5.0.0",
+        "@0x/fast-abi": "^0.0.5",
         "@0x/json-schemas": "^6.4.4",
         "@0x/neon-router": "^0.3.5",
-        "@0x/protocol-utils": "^11.13.0",
-        "@0x/quote-server": "^6.0.6",
+        "@0x/protocol-utils": "^11.16.3",
+        "@0x/quote-server": "^8.0.0",
         "@0x/types": "^3.3.6",
-        "@0x/typescript-typings": "^5.3.1",
-        "@0x/utils": "^6.5.3",
-        "@0x/web3-wrapper": "^7.6.5",
-        "@balancer-labs/sdk": "^0.1.6",
-        "@balancer-labs/sor": "0.3.2",
+        "@0x/utils": "^7.0.0",
+        "@0x/web3-wrapper": "^8.0.0",
+        "@balancer-labs/sdk": "0.1.6",
         "@bancor/sdk": "0.2.9",
         "@ethersproject/abi": "^5.0.1",
         "@ethersproject/address": "^5.0.1",
@@ -83,33 +83,23 @@
         "@ethersproject/strings": "^5.0.10",
         "axios": "^0.21.1",
         "axios-mock-adapter": "^1.19.0",
-        "cream-sor": "^0.3.3",
-        "decimal.js": "^10.2.0",
-        "ethereum-types": "^3.7.0",
-        "ethereumjs-util": "^7.0.10",
-        "fast-abi": "^0.0.4",
+        "balancer-labs-sor-v1": "npm:@balancer-labs/sor@0.3.2",
+        "ethereum-types": "^3.7.1",
         "graphql": "^15.4.0",
         "graphql-request": "^3.4.0",
         "heartbeats": "^5.0.1",
-        "lodash": "^4.17.11",
-        "sorV2": "npm:@balancer-labs/sor"
+        "lodash": "^4.17.15",
+        "msw": "^0.44.2"
     },
     "devDependencies": {
-        "@0x/abi-gen": "^5.8.0",
-        "@0x/contracts-asset-proxy": "^3.7.19",
-        "@0x/contracts-exchange": "^3.2.38",
-        "@0x/contracts-exchange-libs": "^4.3.37",
-        "@0x/contracts-gen": "^2.0.46",
-        "@0x/contracts-test-utils": "^5.4.21",
-        "@0x/contracts-utils": "^4.8.11",
-        "@0x/mesh-rpc-client": "^9.4.2",
-        "@0x/migrations": "^8.1.19",
-        "@0x/sol-compiler": "^4.8.1",
-        "@0x/subproviders": "^6.6.5",
+        "@0x/abi-gen": "^5.8.1",
+        "@0x/contracts-gen": "^2.0.47",
+        "@0x/contracts-test-utils": "^5.4.27",
+        "@0x/sol-compiler": "^4.8.2",
+        "@0x/subproviders": "^7.0.0",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.4",
-        "@0x/types": "^3.3.6",
-        "@types/lodash": "4.14.104",
+        "@types/lodash": "4.14.137",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
         "chai": "^4.0.1",
@@ -117,12 +107,11 @@
         "chai-bignumber": "^3.0.0",
         "dirty-chai": "^2.0.1",
         "gitpkg": "https://github.com/0xProject/gitpkg.git",
-        "make-promises-safe": "^1.1.0",
         "mocha": "^6.2.0",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
         "shx": "^0.2.2",
-        "tslint": "5.11.0",
+        "tslint": "^6.1.3",
         "typedoc": "~0.16.11",
         "typemoq": "^2.1.0",
         "typescript": "4.6.3"

packages/asset-swapper/src/constants.ts

@@ -19,7 +19,7 @@ import {
     DEFAULT_TOKEN_ADJACENCY_GRAPH_BY_CHAIN_ID,
 } from './utils/market_operation_utils/constants';
 
-const ETH_GAS_STATION_API_URL = 'https://ethgasstation.info/api/ethgasAPI.json';
+const ZERO_EX_GAS_API_URL = 'https://gas.api.0x.org/source/median';
 const NULL_BYTES = '0x';
 const NULL_ERC20_ASSET_DATA = '0xf47261b00000000000000000000000000000000000000000000000000000000000000000';
 const NULL_ADDRESS = '0x0000000000000000000000000000000000000000';
@@ -48,7 +48,7 @@ const DEFAULT_SWAP_QUOTER_OPTS: SwapQuoterOpts = {
     orderRefreshIntervalMs: 10000, // 10 seconds
     ...DEFAULT_ORDER_PRUNER_OPTS,
     samplerGasLimit: 500e6,
-    ethGasStationUrl: ETH_GAS_STATION_API_URL,
+    zeroExGasApiUrl: ZERO_EX_GAS_API_URL,
     rfqt: {
         integratorsWhitelist: [],
         makerAssetOfferings: {},
@@ -95,11 +95,10 @@ export { DEFAULT_FEE_SCHEDULE, DEFAULT_GAS_SCHEDULE } from './utils/market_opera
 
 export const POSITIVE_SLIPPAGE_FEE_TRANSFORMER_GAS = new BigNumber(30000);
 
-// tslint:disable-next-line: custom-no-magic-numbers
 export const KEEP_ALIVE_TTL = 5 * 60 * ONE_SECOND_MS;
 
 export const constants = {
-    ETH_GAS_STATION_API_URL,
+    ZERO_EX_GAS_API_URL,
     PROTOCOL_FEE_MULTIPLIER,
     POSITIVE_SLIPPAGE_FEE_TRANSFORMER_GAS,
     NULL_BYTES,

packages/asset-swapper/src/index.ts

@@ -4,7 +4,7 @@ export {
     ContractTxFunctionObj,
     SendTransactionOpts,
 } from '@0x/base-contract';
-export { ContractAddresses } from '@0x/contract-addresses';
+export { ContractAddresses, ChainId, getContractAddressesForChainOrThrow } from '@0x/contract-addresses';
 export {
     V4RFQFirmQuote,
     V4RFQIndicativeQuote,
@@ -132,6 +132,7 @@ export {
     BUY_SOURCE_FILTER_BY_CHAIN_ID,
     SELL_SOURCE_FILTER_BY_CHAIN_ID,
     NATIVE_FEE_TOKEN_BY_CHAIN_ID,
+    ZERO_AMOUNT,
 } from './utils/market_operation_utils/constants';
 export {
     Parameters,
@@ -141,7 +142,6 @@ export {
 export {
     BalancerFillData,
     BancorFillData,
-    CollapsedFill,
     CurveFillData,
     CurveFunctionSelectors,
     CurveInfo,
@@ -150,25 +150,25 @@ export {
     ERC20BridgeSource,
     ExchangeProxyOverhead,
     FeeSchedule,
+    GasSchedule,
     Fill,
+    FillAdjustor,
     FillData,
     GetMarketOrdersRfqOpts,
-    KyberFillData,
     LiquidityProviderFillData,
     LiquidityProviderRegistry,
-    MarketDepth,
-    MarketDepthSide,
     MooniswapFillData,
     MultiHopFillData,
-    NativeCollapsedFill,
     NativeRfqOrderFillData,
     NativeLimitOrderFillData,
     NativeFillData,
     OptimizedMarketOrder,
     SourceQuoteOperation,
-    TokenAdjacencyGraph,
     UniswapV2FillData,
 } from './utils/market_operation_utils/types';
+
+export { TokenAdjacencyGraph, TokenAdjacencyGraphBuilder } from './utils/token_adjacency_graph';
+export { IdentityFillAdjustor } from './utils/market_operation_utils/identity_fill_adjustor';
 export { ProtocolFeeUtils } from './utils/protocol_fee_utils';
 export {
     BridgeQuoteReportEntry,
@@ -192,3 +192,5 @@ export type Native = ERC20BridgeSource.Native;
 export type MultiHop = ERC20BridgeSource.MultiHop;
 
 export { rfqtMocker, RfqtQuoteEndpoint } from './utils/rfqt_mocker';
+
+export { adjustOutput } from './utils/market_operation_utils/fills';

packages/asset-swapper/src/quote_consumers/exchange_proxy_swap_quote_consumer.ts

@@ -32,16 +32,13 @@ import {
 import { assert } from '../utils/assert';
 import {
     CURVE_LIQUIDITY_PROVIDER_BY_CHAIN_ID,
-    MOONISWAP_LIQUIDITY_PROVIDER_BY_CHAIN_ID,
     NATIVE_FEE_TOKEN_BY_CHAIN_ID,
 } from '../utils/market_operation_utils/constants';
-import { poolEncoder } from '../utils/market_operation_utils/orders';
 import {
     CurveFillData,
     ERC20BridgeSource,
     FinalUniswapV3FillData,
     LiquidityProviderFillData,
-    MooniswapFillData,
     NativeRfqOrderFillData,
     OptimizedMarketBridgeOrder,
     OptimizedMarketOrder,
@@ -64,7 +61,6 @@ import {
     requiresTransformERC20,
 } from './quote_consumer_utils';
 
-// tslint:disable-next-line:custom-no-magic-numbers
 const MAX_UINT256 = new BigNumber(2).pow(256).minus(1);
 const { NULL_ADDRESS, NULL_BYTES, ZERO_AMOUNT } = constants;
 
@@ -75,9 +71,7 @@ const PANCAKE_SWAP_FORKS = [
     ERC20BridgeSource.BakerySwap,
     ERC20BridgeSource.SushiSwap,
     ERC20BridgeSource.ApeSwap,
-    ERC20BridgeSource.CafeSwap,
     ERC20BridgeSource.CheeseSwap,
-    ERC20BridgeSource.JulSwap,
 ];
 const FAKE_PROVIDER: any = {
     sendAsync(): void {
@@ -222,9 +216,7 @@ export class ExchangeProxySwapQuoteConsumer implements SwapQuoteConsumerBase {
                 ERC20BridgeSource.BakerySwap,
                 ERC20BridgeSource.SushiSwap,
                 ERC20BridgeSource.ApeSwap,
-                ERC20BridgeSource.CafeSwap,
                 ERC20BridgeSource.CheeseSwap,
-                ERC20BridgeSource.JulSwap,
             ])
         ) {
             const source = slippedOrders[0].source;
@@ -286,7 +278,7 @@ export class ExchangeProxySwapQuoteConsumer implements SwapQuoteConsumerBase {
             // ETH buy/sell is supported
             ![sellToken, buyToken].includes(NATIVE_FEE_TOKEN_BY_CHAIN_ID[ChainId.Mainnet])
         ) {
-            const fillData = slippedOrders[0].fills[0].fillData as CurveFillData;
+            const fillData = slippedOrders[0].fillData as CurveFillData;
             return {
                 calldataHexString: this._exchangeProxy
                     .sellToLiquidityProvider(
@@ -311,30 +303,6 @@ export class ExchangeProxySwapQuoteConsumer implements SwapQuoteConsumerBase {
             };
         }
 
-        if (
-            this.chainId === ChainId.Mainnet &&
-            isDirectSwapCompatible(quote, optsWithDefaults, [ERC20BridgeSource.Mooniswap])
-        ) {
-            const fillData = slippedOrders[0].fills[0].fillData as MooniswapFillData;
-            return {
-                calldataHexString: this._exchangeProxy
-                    .sellToLiquidityProvider(
-                        isFromETH ? ETH_TOKEN_ADDRESS : sellToken,
-                        isToETH ? ETH_TOKEN_ADDRESS : buyToken,
-                        MOONISWAP_LIQUIDITY_PROVIDER_BY_CHAIN_ID[this.chainId],
-                        NULL_ADDRESS,
-                        sellAmount,
-                        minBuyAmount,
-                        poolEncoder.encode([fillData.poolAddress]),
-                    )
-                    .getABIEncodedTransactionData(),
-                ethAmount: isFromETH ? sellAmount : ZERO_AMOUNT,
-                toAddress: this._exchangeProxy.address,
-                allowanceTarget: this.contractAddresses.exchangeProxy,
-                gasOverhead: ZERO_AMOUNT,
-            };
-        }
-
         // RFQT VIP
         if (
             [ChainId.Mainnet, ChainId.Polygon].includes(this.chainId) &&

packages/asset-swapper/src/swap_quoter.ts

@@ -1,9 +1,9 @@
 import { ChainId, getContractAddressesForChainOrThrow } from '@0x/contract-addresses';
+import { FastABI } from '@0x/fast-abi';
 import { FillQuoteTransformerOrderType, LimitOrder } from '@0x/protocol-utils';
 import { BigNumber, providerUtils } from '@0x/utils';
 import Axios, { AxiosInstance } from 'axios';
 import { BlockParamLiteral, MethodAbi, SupportedProvider, ZeroExProvider } from 'ethereum-types';
-import { FastABI } from 'fast-abi';
 import { Agent as HttpAgent } from 'http';
 import { Agent as HttpsAgent } from 'https';
 import * as _ from 'lodash';
@@ -33,12 +33,9 @@ import { DexOrderSampler } from './utils/market_operation_utils/sampler';
 import { SourceFilters } from './utils/market_operation_utils/source_filters';
 import {
     ERC20BridgeSource,
-    FeeSchedule,
     FillData,
+    GasSchedule,
     GetMarketOrdersOpts,
-    MarketDepth,
-    MarketDepthSide,
-    MarketSideLiquidity,
     OptimizedMarketOrder,
     OptimizerResultWithReport,
 } from './utils/market_operation_utils/types';
@@ -112,7 +109,7 @@ export class SwapQuoter {
         };
         this._protocolFeeUtils = ProtocolFeeUtils.getInstance(
             constants.PROTOCOL_FEE_UTILS_POLLING_INTERVAL_IN_MS,
-            options.ethGasStationUrl,
+            options.zeroExGasApiUrl,
         );
         // Allow the sampler bytecode to be overwritten using geths override functionality
         const samplerBytecode = _.get(artifacts.ERC20BridgeSampler, 'compilerOutput.evm.deployedBytecode.object');
@@ -147,7 +144,7 @@ export class SwapQuoter {
                 this.chainId,
                 samplerContract,
                 samplerOverrides,
-                undefined, // pools caches for balancer and cream
+                undefined, // pools caches for balancer
                 tokenAdjacencyGraph,
                 liquidityProviderRegistry,
                 this.chainId === ChainId.Mainnet // Enable Bancor only on Mainnet
@@ -228,67 +225,6 @@ export class SwapQuoter {
         return batchSwapQuotes.filter(x => x !== undefined) as MarketBuySwapQuote[];
     }
 
-    /**
-     * Returns the bids and asks liquidity for the entire market.
-     * For certain sources (like AMM's) it is recommended to provide a practical maximum takerAssetAmount.
-     * @param   makerTokenAddress The address of the maker asset
-     * @param   takerTokenAddress The address of the taker asset
-     * @param   takerAssetAmount  The amount to sell and buy for the bids and asks.
-     *
-     * @return  An object that conforms to MarketDepth that contains all of the samples and liquidity
-     *          information for the source.
-     */
-    public async getBidAskLiquidityForMakerTakerAssetPairAsync(
-        makerToken: string,
-        takerToken: string,
-        takerAssetAmount: BigNumber,
-        options: Partial<SwapQuoteRequestOpts> = {},
-    ): Promise<MarketDepth> {
-        assert.isString('makerToken', makerToken);
-        assert.isString('takerToken', takerToken);
-        const sourceFilters = new SourceFilters([], options.excludedSources, options.includedSources);
-
-        let [sellOrders, buyOrders] = !sourceFilters.isAllowed(ERC20BridgeSource.Native)
-            ? [[], []]
-            : await Promise.all([
-                  this.orderbook.getOrdersAsync(makerToken, takerToken),
-                  this.orderbook.getOrdersAsync(takerToken, makerToken),
-              ]);
-        if (!sellOrders || sellOrders.length === 0) {
-            sellOrders = [createDummyOrder(makerToken, takerToken)];
-        }
-        if (!buyOrders || buyOrders.length === 0) {
-            buyOrders = [createDummyOrder(takerToken, makerToken)];
-        }
-
-        const getMarketDepthSide = (marketSideLiquidity: MarketSideLiquidity): MarketDepthSide => {
-            const { dexQuotes, nativeOrders } = marketSideLiquidity.quotes;
-            const { side } = marketSideLiquidity;
-
-            return [
-                ...dexQuotes,
-                nativeOrders.map(o => {
-                    return {
-                        input: side === MarketOperation.Sell ? o.fillableTakerAmount : o.fillableMakerAmount,
-                        output: side === MarketOperation.Sell ? o.fillableMakerAmount : o.fillableTakerAmount,
-                        fillData: o,
-                        source: ERC20BridgeSource.Native,
-                    };
-                }),
-            ];
-        };
-        const [bids, asks] = await Promise.all([
-            this._marketOperationUtils.getMarketBuyLiquidityAsync(buyOrders, takerAssetAmount, options),
-            this._marketOperationUtils.getMarketSellLiquidityAsync(sellOrders, takerAssetAmount, options),
-        ]);
-        return {
-            bids: getMarketDepthSide(bids),
-            asks: getMarketDepthSide(asks),
-            makerTokenDecimals: asks.makerTokenDecimals,
-            takerTokenDecimals: asks.takerTokenDecimals,
-        };
-    }
-
     /**
      * Returns the recommended gas price for a fast transaction
      */
@@ -366,9 +302,11 @@ export class SwapQuoter {
         const calcOpts: GetMarketOrdersOpts = {
             ...cloneOpts,
             gasPrice,
-            feeSchedule: _.mapValues(opts.feeSchedule, gasCost => (fillData: FillData) =>
-                gasCost === undefined ? 0 : gasPrice.times(gasCost(fillData)),
-            ),
+            feeSchedule: _.mapValues(opts.gasSchedule, gasCost => (fillData: FillData) => {
+                const gas = gasCost ? gasCost(fillData) : 0;
+                const fee = gasPrice.times(gas);
+                return { gas, fee };
+            }),
             exchangeProxyOverhead: flags => gasPrice.times(opts.exchangeProxyOverhead(flags)),
         };
         // pass the QuoteRequestor on if rfqt enabled
@@ -502,7 +440,7 @@ function createSwapQuote(
     operation: MarketOperation,
     assetFillAmount: BigNumber,
     gasPrice: BigNumber,
-    gasSchedule: FeeSchedule,
+    gasSchedule: GasSchedule,
     slippage: number,
 ): SwapQuote {
     const {
@@ -562,7 +500,7 @@ function calculateQuoteInfo(
     operation: MarketOperation,
     assetFillAmount: BigNumber,
     gasPrice: BigNumber,
-    gasSchedule: FeeSchedule,
+    gasSchedule: GasSchedule,
     slippage: number,
 ): { bestCaseQuoteInfo: SwapQuoteInfo; worstCaseQuoteInfo: SwapQuoteInfo; sourceBreakdown: SwapQuoteOrdersBreakdown } {
     const bestCaseFillResult = simulateBestCaseFill({
@@ -591,25 +529,23 @@ function calculateQuoteInfo(
 function calculateTwoHopQuoteInfo(
     optimizedOrders: OptimizedMarketOrder[],
     operation: MarketOperation,
-    gasSchedule: FeeSchedule,
+    gasSchedule: GasSchedule,
     slippage: number,
 ): { bestCaseQuoteInfo: SwapQuoteInfo; worstCaseQuoteInfo: SwapQuoteInfo; sourceBreakdown: SwapQuoteOrdersBreakdown } {
     const [firstHopOrder, secondHopOrder] = optimizedOrders;
-    const [firstHopFill] = firstHopOrder.fills;
-    const [secondHopFill] = secondHopOrder.fills;
     const gas = new BigNumber(
         gasSchedule[ERC20BridgeSource.MultiHop]!({
-            firstHopSource: _.pick(firstHopFill, 'source', 'fillData'),
-            secondHopSource: _.pick(secondHopFill, 'source', 'fillData'),
+            firstHopSource: _.pick(firstHopOrder, 'source', 'fillData'),
+            secondHopSource: _.pick(secondHopOrder, 'source', 'fillData'),
         }),
     ).toNumber();
     const isSell = operation === MarketOperation.Sell;
 
     return {
         bestCaseQuoteInfo: {
-            makerAmount: isSell ? secondHopFill.output : secondHopFill.input,
-            takerAmount: isSell ? firstHopFill.input : firstHopFill.output,
-            totalTakerAmount: isSell ? firstHopFill.input : firstHopFill.output,
+            makerAmount: isSell ? secondHopOrder.fill.output : secondHopOrder.fill.input,
+            takerAmount: isSell ? firstHopOrder.fill.input : firstHopOrder.fill.output,
+            totalTakerAmount: isSell ? firstHopOrder.fill.input : firstHopOrder.fill.output,
             feeTakerTokenAmount: constants.ZERO_AMOUNT,
             protocolFeeInWeiAmount: constants.ZERO_AMOUNT,
             gas,
@@ -635,7 +571,7 @@ function calculateTwoHopQuoteInfo(
             [ERC20BridgeSource.MultiHop]: {
                 proportion: new BigNumber(1),
                 intermediateToken: secondHopOrder.takerToken,
-                hops: [firstHopFill.source, secondHopFill.source],
+                hops: [firstHopOrder.source, secondHopOrder.source],
             },
         },
     };

packages/asset-swapper/src/types.ts

@@ -17,11 +17,13 @@ import {
     GetMarketOrdersOpts,
     LiquidityProviderRegistry,
     OptimizedMarketOrder,
-    TokenAdjacencyGraph,
 } from './utils/market_operation_utils/types';
-export { SamplerMetrics } from './utils/market_operation_utils/types';
 import { ExtendedQuoteReportSources, PriceComparisonsReport, QuoteReport } from './utils/quote_report_generator';
 import { MetricsProxy } from './utils/quote_requestor';
+import { TokenAdjacencyGraph } from './utils/token_adjacency_graph';
+export { SamplerMetrics } from './utils/market_operation_utils/types';
+
+export type Address = string;
 
 /**
  * expiryBufferMs: The number of seconds to add when calculating whether an order is expired or not. Defaults to 300s (5m).
@@ -335,7 +337,7 @@ export interface SwapQuoterOpts extends OrderPrunerOpts {
     contractAddresses?: AssetSwapperContractAddresses;
     samplerGasLimit?: number;
     multiBridgeAddress?: string;
-    ethGasStationUrl?: string;
+    zeroExGasApiUrl?: string;
     rfqt?: SwapQuoterRfqOpts;
     samplerOverrides?: SamplerOverrides;
     tokenAdjacencyGraph?: TokenAdjacencyGraph;

packages/asset-swapper/src/utils/alt_mm_implementation_utils.ts

@@ -104,11 +104,9 @@ function parseIndicativeQuoteResponseFromAltMM(
         takerAmount,
         // HACK: alt implementation does not return an expiration with indicative quotes
         // return now + { IMPUTED EXPIRY SECONDS } to have it included after order checks
-        expiry:
-            // tslint:disable-next-line:custom-no-magic-numbers
-            new BigNumber(Date.now() / 1000)
-                .integerValue(BigNumber.ROUND_DOWN)
-                .plus(constants.ALT_MM_IMPUTED_INDICATIVE_EXPIRY_SECONDS),
+        expiry: new BigNumber(Date.now() / 1000)
+            .integerValue(BigNumber.ROUND_DOWN)
+            .plus(constants.ALT_MM_IMPUTED_INDICATIVE_EXPIRY_SECONDS),
     };
 }
 
@@ -243,7 +241,6 @@ export async function returnQuoteFromAltMMAsync<ResponseT>(
     // empty response will get filtered out in validation
     const emptyResponse = {};
 
-    // tslint:disable-next-line:custom-no-magic-numbers
     if (response.status !== SUCCESS_CODE) {
         const rejectedRequestInfo = {
             status: response.status,

packages/asset-swapper/src/utils/market_operation_utils/aave_reserves_cache.ts

@@ -40,7 +40,6 @@ interface Cache {
     [key: string]: AaveReserve[];
 }
 
-// tslint:disable-next-line:custom-no-magic-numbers
 const RESERVES_REFRESH_INTERVAL_MS = 30 * constants.ONE_MINUTE_MS;
 
 /**

packages/asset-swapper/src/utils/market_operation_utils/bridge_source_utils.ts

@@ -1,5 +1,5 @@
 import { ChainId } from '@0x/contract-addresses';
-import { BigNumber, NULL_BYTES } from '@0x/utils';
+import { BigNumber } from '@0x/utils';
 
 import {
     ACRYPTOS_BSC_INFOS,
@@ -7,9 +7,7 @@ import {
     BAKERYSWAP_ROUTER_BY_CHAIN_ID,
     BELT_BSC_INFOS,
     BISWAP_ROUTER_BY_CHAIN_ID,
-    CAFESWAP_ROUTER_BY_CHAIN_ID,
     CHEESESWAP_ROUTER_BY_CHAIN_ID,
-    COMETHSWAP_ROUTER_BY_CHAIN_ID,
     COMPONENT_POOLS_BY_CHAIN_ID,
     CRYPTO_COM_ROUTER_BY_CHAIN_ID,
     CURVE_AVALANCHE_INFOS,
@@ -26,28 +24,23 @@ import {
     FIREBIRDONESWAP_BSC_INFOS,
     FIREBIRDONESWAP_POLYGON_INFOS,
     IRONSWAP_POLYGON_INFOS,
-    JETSWAP_ROUTER_BY_CHAIN_ID,
-    JULSWAP_ROUTER_BY_CHAIN_ID,
-    KYBER_BANNED_RESERVES,
-    KYBER_BRIDGED_LIQUIDITY_PREFIX,
+    KNIGHTSWAP_ROUTER_BY_CHAIN_ID,
     MAX_DODOV2_POOLS_QUERIED,
-    MAX_KYBER_RESERVES_QUERIED,
+    MDEX_ROUTER_BY_CHAIN_ID,
+    MESHSWAP_ROUTER_BY_CHAIN_ID,
     MOBIUSMONEY_CELO_INFOS,
     MORPHEUSSWAP_ROUTER_BY_CHAIN_ID,
     MSTABLE_POOLS_BY_CHAIN_ID,
     NERVE_BSC_INFOS,
     NULL_ADDRESS,
-    PANCAKESWAP_ROUTER_BY_CHAIN_ID,
     PANCAKESWAPV2_ROUTER_BY_CHAIN_ID,
+    PANCAKESWAP_ROUTER_BY_CHAIN_ID,
     PANGOLIN_ROUTER_BY_CHAIN_ID,
     PLATYPUS_AVALANCHE_INFOS,
-    POLYDEX_ROUTER_BY_CHAIN_ID,
     QUICKSWAP_ROUTER_BY_CHAIN_ID,
     SADDLE_MAINNET_INFOS,
     SHELL_POOLS_BY_CHAIN_ID,
     SHIBASWAP_ROUTER_BY_CHAIN_ID,
-    SMOOTHY_BSC_INFOS,
-    SMOOTHY_MAINNET_INFOS,
     SPIRITSWAP_ROUTER_BY_CHAIN_ID,
     SPOOKYSWAP_ROUTER_BY_CHAIN_ID,
     SUSHISWAP_ROUTER_BY_CHAIN_ID,
@@ -66,32 +59,11 @@ import {
 } from './constants';
 import { CurveInfo, ERC20BridgeSource, PlatypusInfo } from './types';
 
-/**
- * Filter Kyber reserves which should not be used (0xbb bridged reserves)
- * @param reserveId Kyber reserveId
- */
-export function isAllowedKyberReserveId(reserveId: string): boolean {
-    return (
-        reserveId !== NULL_BYTES &&
-        !reserveId.startsWith(KYBER_BRIDGED_LIQUIDITY_PREFIX) &&
-        !KYBER_BANNED_RESERVES.includes(reserveId)
-    );
-}
-
 // tslint:disable-next-line: completed-docs ban-types
 export function isValidAddress(address: string | String): address is string {
     return (typeof address === 'string' || address instanceof String) && address.toString() !== NULL_ADDRESS;
 }
 
-/**
- * Returns the offsets to be used to discover Kyber reserves
- */
-export function getKyberOffsets(): BigNumber[] {
-    return Array(MAX_KYBER_RESERVES_QUERIED)
-        .fill(0)
-        .map((_v, i) => new BigNumber(i));
-}
-
 // tslint:disable completed-docs
 export function getDodoV2Offsets(): BigNumber[] {
     return Array(MAX_DODOV2_POOLS_QUERIED)
@@ -350,30 +322,6 @@ export function getEllipsisInfosForPair(chainId: ChainId, takerToken: string, ma
     );
 }
 
-export function getSmoothyInfosForPair(chainId: ChainId, takerToken: string, makerToken: string): CurveInfo[] {
-    if (chainId === ChainId.BSC) {
-        return Object.values(SMOOTHY_BSC_INFOS).filter(c =>
-            [makerToken, takerToken].every(
-                t =>
-                    (c.tokens.includes(t) && c.metaTokens === undefined) ||
-                    (c.tokens.includes(t) &&
-                        [makerToken, takerToken].filter(v => c.metaTokens?.includes(v)).length > 0),
-            ),
-        );
-    } else if (chainId === ChainId.Mainnet) {
-        return Object.values(SMOOTHY_MAINNET_INFOS).filter(c =>
-            [makerToken, takerToken].every(
-                t =>
-                    (c.tokens.includes(t) && c.metaTokens === undefined) ||
-                    (c.tokens.includes(t) &&
-                        [makerToken, takerToken].filter(v => c.metaTokens?.includes(v)).length > 0),
-            ),
-        );
-    } else {
-        return [];
-    }
-}
-
 export function getSaddleInfosForPair(chainId: ChainId, takerToken: string, makerToken: string): CurveInfo[] {
     if (chainId !== ChainId.Mainnet) {
         return [];
@@ -481,7 +429,6 @@ export function getCurveLikeInfosForPair(
         | ERC20BridgeSource.Synapse
         | ERC20BridgeSource.Belt
         | ERC20BridgeSource.Ellipsis
-        | ERC20BridgeSource.Smoothy
         | ERC20BridgeSource.Saddle
         | ERC20BridgeSource.IronSwap
         | ERC20BridgeSource.XSigma
@@ -509,9 +456,6 @@ export function getCurveLikeInfosForPair(
         case ERC20BridgeSource.Ellipsis:
             pools = getEllipsisInfosForPair(chainId, takerToken, makerToken);
             break;
-        case ERC20BridgeSource.Smoothy:
-            pools = getSmoothyInfosForPair(chainId, takerToken, makerToken);
-            break;
         case ERC20BridgeSource.Saddle:
             pools = getSaddleInfosForPair(chainId, takerToken, makerToken);
             break;
@@ -550,16 +494,11 @@ export function uniswapV2LikeRouterAddress(
         | ERC20BridgeSource.PancakeSwapV2
         | ERC20BridgeSource.BakerySwap
         | ERC20BridgeSource.ApeSwap
-        | ERC20BridgeSource.CafeSwap
         | ERC20BridgeSource.CheeseSwap
-        | ERC20BridgeSource.JulSwap
         | ERC20BridgeSource.QuickSwap
-        | ERC20BridgeSource.ComethSwap
         | ERC20BridgeSource.Dfyn
         | ERC20BridgeSource.WaultSwap
-        | ERC20BridgeSource.Polydex
         | ERC20BridgeSource.ShibaSwap
-        | ERC20BridgeSource.JetSwap
         | ERC20BridgeSource.TraderJoe
         | ERC20BridgeSource.Pangolin
         | ERC20BridgeSource.UbeSwap
@@ -567,7 +506,10 @@ export function uniswapV2LikeRouterAddress(
         | ERC20BridgeSource.SpookySwap
         | ERC20BridgeSource.SpiritSwap
         | ERC20BridgeSource.BiSwap
-        | ERC20BridgeSource.Yoshi,
+        | ERC20BridgeSource.Yoshi
+        | ERC20BridgeSource.MDex
+        | ERC20BridgeSource.KnightSwap
+        | ERC20BridgeSource.MeshSwap,
 ): string {
     switch (source) {
         case ERC20BridgeSource.UniswapV2:
@@ -584,26 +526,16 @@ export function uniswapV2LikeRouterAddress(
             return BAKERYSWAP_ROUTER_BY_CHAIN_ID[chainId];
         case ERC20BridgeSource.ApeSwap:
             return APESWAP_ROUTER_BY_CHAIN_ID[chainId];
-        case ERC20BridgeSource.CafeSwap:
-            return CAFESWAP_ROUTER_BY_CHAIN_ID[chainId];
         case ERC20BridgeSource.CheeseSwap:
             return CHEESESWAP_ROUTER_BY_CHAIN_ID[chainId];
-        case ERC20BridgeSource.JulSwap:
-            return JULSWAP_ROUTER_BY_CHAIN_ID[chainId];
         case ERC20BridgeSource.QuickSwap:
             return QUICKSWAP_ROUTER_BY_CHAIN_ID[chainId];
-        case ERC20BridgeSource.ComethSwap:
-            return COMETHSWAP_ROUTER_BY_CHAIN_ID[chainId];
         case ERC20BridgeSource.Dfyn:
             return DFYN_ROUTER_BY_CHAIN_ID[chainId];
         case ERC20BridgeSource.WaultSwap:
             return WAULTSWAP_ROUTER_BY_CHAIN_ID[chainId];
-        case ERC20BridgeSource.Polydex:
-            return POLYDEX_ROUTER_BY_CHAIN_ID[chainId];
         case ERC20BridgeSource.ShibaSwap:
             return SHIBASWAP_ROUTER_BY_CHAIN_ID[chainId];
-        case ERC20BridgeSource.JetSwap:
-            return JETSWAP_ROUTER_BY_CHAIN_ID[chainId];
         case ERC20BridgeSource.Pangolin:
             return PANGOLIN_ROUTER_BY_CHAIN_ID[chainId];
         case ERC20BridgeSource.TraderJoe:
@@ -620,6 +552,12 @@ export function uniswapV2LikeRouterAddress(
             return BISWAP_ROUTER_BY_CHAIN_ID[chainId];
         case ERC20BridgeSource.Yoshi:
             return YOSHI_ROUTER_BY_CHAIN_ID[chainId];
+        case ERC20BridgeSource.MeshSwap:
+            return MESHSWAP_ROUTER_BY_CHAIN_ID[chainId];
+        case ERC20BridgeSource.MDex:
+            return MDEX_ROUTER_BY_CHAIN_ID[chainId];
+        case ERC20BridgeSource.KnightSwap:
+            return KNIGHTSWAP_ROUTER_BY_CHAIN_ID[chainId];
         default:
             throw new Error(`Unknown UniswapV2 like source ${source}`);
     }

packages/asset-swapper/src/utils/market_operation_utils/comparison_price.ts

@@ -48,7 +48,7 @@ export function getComparisonPrices(
     } else {
         try {
             const fillFeeInEth = new BigNumber(
-                (feeSchedule[ERC20BridgeSource.Native] as FeeEstimate)({ type: FillQuoteTransformerOrderType.Rfq }),
+                (feeSchedule[ERC20BridgeSource.Native] as FeeEstimate)({ type: FillQuoteTransformerOrderType.Rfq }).fee,
             );
             const exchangeProxyOverheadInEth = new BigNumber(exchangeProxyOverhead(SOURCE_FLAGS.RfqOrder));
             feeInEth = fillFeeInEth.plus(exchangeProxyOverheadInEth);

packages/asset-swapper/src/utils/market_operation_utils/compound_ctoken_cache.ts

@@ -19,7 +19,6 @@ interface Cache {
     [key: string]: CToken;
 }
 
-// tslint:disable-next-line:custom-no-magic-numbers
 const CTOKEN_REFRESH_INTERVAL_MS = 30 * constants.ONE_MINUTE_MS;
 
 /**

packages/asset-swapper/src/utils/market_operation_utils/fills.ts

@@ -3,74 +3,17 @@ import { BigNumber, hexUtils } from '@0x/utils';
 
 import { MarketOperation, NativeOrderWithFillableAmounts } from '../../types';
 
-import { POSITIVE_INF, SOURCE_FLAGS, ZERO_AMOUNT } from './constants';
+import { DEFAULT_FEE_ESTIMATE, POSITIVE_INF, SOURCE_FLAGS } from './constants';
 import { DexSample, ERC20BridgeSource, FeeSchedule, Fill } from './types';
 
 // tslint:disable: prefer-for-of no-bitwise completed-docs
 
 /**
- * Create `Fill` objects from orders and dex quotes.
+ * Converts the ETH value to an amount in output tokens.
+ *
+ * By default this prefers the outputAmountPerEth, but if this value
+ * is zero it will utilize the inputAmountPerEth and input.
  */
-export function createFills(opts: {
-    side: MarketOperation;
-    orders?: NativeOrderWithFillableAmounts[];
-    dexQuotes?: DexSample[][];
-    targetInput?: BigNumber;
-    outputAmountPerEth?: BigNumber;
-    inputAmountPerEth?: BigNumber;
-    excludedSources?: ERC20BridgeSource[];
-    feeSchedule?: FeeSchedule;
-}): Fill[][] {
-    const { side } = opts;
-    const excludedSources = opts.excludedSources || [];
-    const feeSchedule = opts.feeSchedule || {};
-    const orders = opts.orders || [];
-    const dexQuotes = opts.dexQuotes || [];
-    const outputAmountPerEth = opts.outputAmountPerEth || ZERO_AMOUNT;
-    const inputAmountPerEth = opts.inputAmountPerEth || ZERO_AMOUNT;
-    // Create native fills.
-    const nativeFills = nativeOrdersToFills(
-        side,
-        orders.filter(o => o.fillableTakerAmount.isGreaterThan(0)),
-        opts.targetInput,
-        outputAmountPerEth,
-        inputAmountPerEth,
-        feeSchedule,
-    );
-    // Create DEX fills.
-    const dexFills = dexQuotes.map(singleSourceSamples =>
-        dexSamplesToFills(side, singleSourceSamples, outputAmountPerEth, inputAmountPerEth, feeSchedule),
-    );
-    return [...dexFills, nativeFills]
-        .map(p => clipFillsToInput(p, opts.targetInput))
-        .filter(fills => hasLiquidity(fills) && !excludedSources.includes(fills[0].source));
-}
-
-function clipFillsToInput(fills: Fill[], targetInput: BigNumber = POSITIVE_INF): Fill[] {
-    const clipped: Fill[] = [];
-    let input = ZERO_AMOUNT;
-    for (const fill of fills) {
-        if (input.gte(targetInput)) {
-            break;
-        }
-        input = input.plus(fill.input);
-        clipped.push(fill);
-    }
-    return clipped;
-}
-
-function hasLiquidity(fills: Fill[]): boolean {
-    if (fills.length === 0) {
-        return false;
-    }
-    const totalInput = BigNumber.sum(...fills.map(fill => fill.input));
-    const totalOutput = BigNumber.sum(...fills.map(fill => fill.output));
-    if (totalInput.isZero() || totalOutput.isZero()) {
-        return false;
-    }
-    return true;
-}
-
 export function ethToOutputAmount({
     input,
     output,
@@ -85,122 +28,106 @@ export function ethToOutputAmount({
     ethAmount: BigNumber | number;
 }): BigNumber {
     return !outputAmountPerEth.isZero()
-        ? outputAmountPerEth.times(ethAmount)
+        ? outputAmountPerEth.times(ethAmount).integerValue()
         : inputAmountPerEth.times(ethAmount).times(output.dividedToIntegerBy(input));
 }
 
-export function nativeOrdersToFills(
+export function nativeOrderToFill(
     side: MarketOperation,
-    orders: NativeOrderWithFillableAmounts[],
+    order: NativeOrderWithFillableAmounts,
     targetInput: BigNumber = POSITIVE_INF,
     outputAmountPerEth: BigNumber,
     inputAmountPerEth: BigNumber,
     fees: FeeSchedule,
     filterNegativeAdjustedRateOrders: boolean = true,
-): Fill[] {
+): Fill | undefined {
     const sourcePathId = hexUtils.random();
     // Create a single path from all orders.
-    let fills: Array<Fill & { adjustedRate: BigNumber }> = [];
-    for (const o of orders) {
-        const { fillableTakerAmount, fillableTakerFeeAmount, fillableMakerAmount, type } = o;
-        const makerAmount = fillableMakerAmount;
-        const takerAmount = fillableTakerAmount.plus(fillableTakerFeeAmount);
-        const input = side === MarketOperation.Sell ? takerAmount : makerAmount;
-        const output = side === MarketOperation.Sell ? makerAmount : takerAmount;
-        const fee = fees[ERC20BridgeSource.Native] === undefined ? 0 : fees[ERC20BridgeSource.Native]!(o);
-        const outputPenalty = ethToOutputAmount({
-            input,
-            output,
-            inputAmountPerEth,
-            outputAmountPerEth,
-            ethAmount: fee,
-        });
-        // targetInput can be less than the order size
-        // whilst the penalty is constant, it affects the adjusted output
-        // only up until the target has been exhausted.
-        // A large order and an order at the exact target should be penalized
-        // the same.
-        const clippedInput = BigNumber.min(targetInput, input);
-        // scale the clipped output inline with the input
-        const clippedOutput = clippedInput.dividedBy(input).times(output);
-        const adjustedOutput =
-            side === MarketOperation.Sell ? clippedOutput.minus(outputPenalty) : clippedOutput.plus(outputPenalty);
-        const adjustedRate =
-            side === MarketOperation.Sell ? adjustedOutput.div(clippedInput) : clippedInput.div(adjustedOutput);
-        // Optionally skip orders with rates that are <= 0.
-        if (filterNegativeAdjustedRateOrders && adjustedRate.lte(0)) {
-            continue;
-        }
-        fills.push({
-            sourcePathId,
-            adjustedRate,
-            adjustedOutput,
-            input: clippedInput,
-            output: clippedOutput,
-            flags: SOURCE_FLAGS[type === FillQuoteTransformerOrderType.Rfq ? 'RfqOrder' : 'LimitOrder'],
-            index: 0, // TBD
-            parent: undefined, // TBD
-            source: ERC20BridgeSource.Native,
-            type,
-            fillData: { ...o },
-        });
+    const { fillableTakerAmount, fillableTakerFeeAmount, fillableMakerAmount, type } = order;
+    const makerAmount = fillableMakerAmount;
+    const takerAmount = fillableTakerAmount.plus(fillableTakerFeeAmount);
+    const input = side === MarketOperation.Sell ? takerAmount : makerAmount;
+    const output = side === MarketOperation.Sell ? makerAmount : takerAmount;
+    const { fee, gas } =
+        fees[ERC20BridgeSource.Native] === undefined ? DEFAULT_FEE_ESTIMATE : fees[ERC20BridgeSource.Native]!(order);
+    const outputPenalty = ethToOutputAmount({
+        input,
+        output,
+        inputAmountPerEth,
+        outputAmountPerEth,
+        ethAmount: fee,
+    });
+    // targetInput can be less than the order size
+    // whilst the penalty is constant, it affects the adjusted output
+    // only up until the target has been exhausted.
+    // A large order and an order at the exact target should be penalized
+    // the same.
+    const clippedInput = BigNumber.min(targetInput, input);
+    // scale the clipped output inline with the input
+    const clippedOutput = clippedInput.dividedBy(input).times(output);
+    const adjustedOutput =
+        side === MarketOperation.Sell ? clippedOutput.minus(outputPenalty) : clippedOutput.plus(outputPenalty);
+    const adjustedRate =
+        side === MarketOperation.Sell ? adjustedOutput.div(clippedInput) : clippedInput.div(adjustedOutput);
+    // Optionally skip orders with rates that are <= 0.
+    if (filterNegativeAdjustedRateOrders && adjustedRate.lte(0)) {
+        return undefined;
     }
-    // Sort by descending adjusted rate.
-    fills = fills.sort((a, b) => b.adjustedRate.comparedTo(a.adjustedRate));
-    // Re-index fills.
-    for (let i = 0; i < fills.length; ++i) {
-        fills[i].parent = i === 0 ? undefined : fills[i - 1];
-        fills[i].index = i;
-    }
-    return fills;
+
+    return {
+        sourcePathId,
+        adjustedOutput,
+        input: clippedInput,
+        output: clippedOutput,
+        flags: SOURCE_FLAGS[type === FillQuoteTransformerOrderType.Rfq ? 'RfqOrder' : 'LimitOrder'],
+        source: ERC20BridgeSource.Native,
+        type,
+        fillData: { ...order },
+        gas,
+    };
 }
 
-export function dexSamplesToFills(
+export function dexSampleToFill(
     side: MarketOperation,
-    samples: DexSample[],
+    sample: DexSample,
     outputAmountPerEth: BigNumber,
     inputAmountPerEth: BigNumber,
     fees: FeeSchedule,
-): Fill[] {
+): Fill {
     const sourcePathId = hexUtils.random();
-    const fills: Fill[] = [];
-    // Drop any non-zero entries. This can occur if the any fills on Kyber were UniswapReserves
-    // We need not worry about Kyber fills going to UniswapReserve as the input amount
-    // we fill is the same as we sampled. I.e we received [0,20,30] output from [1,2,3] input
-    // and we only fill [2,3] on Kyber (as 1 returns 0 output)
-    const nonzeroSamples = samples.filter(q => !q.output.isZero());
-    for (let i = 0; i < nonzeroSamples.length; i++) {
-        const sample = nonzeroSamples[i];
-        const prevSample = i === 0 ? undefined : nonzeroSamples[i - 1];
-        const { source, fillData } = sample;
-        const input = sample.input.minus(prevSample ? prevSample.input : 0);
-        const output = sample.output.minus(prevSample ? prevSample.output : 0);
-        let penalty = ZERO_AMOUNT;
-        if (i === 0) {
-            const fee = fees[source] === undefined ? 0 : fees[source]!(sample.fillData) || 0;
-            // Only the first fill in a DEX path incurs a penalty.
-            penalty = ethToOutputAmount({
-                input,
-                output,
-                inputAmountPerEth,
-                outputAmountPerEth,
-                ethAmount: fee,
-            });
-        }
-        const adjustedOutput = side === MarketOperation.Sell ? output.minus(penalty) : output.plus(penalty);
+    const { source, fillData } = sample;
+    const input = sample.input;
+    const output = sample.output;
+    const { fee, gas } =
+        fees[source] === undefined ? DEFAULT_FEE_ESTIMATE : fees[source]!(sample.fillData) || DEFAULT_FEE_ESTIMATE;
 
-        fills.push({
-            sourcePathId,
-            input,
-            output,
-            adjustedOutput,
-            source,
-            fillData,
-            type: FillQuoteTransformerOrderType.Bridge,
-            index: i,
-            parent: i !== 0 ? fills[fills.length - 1] : undefined,
-            flags: SOURCE_FLAGS[source],
-        });
-    }
-    return fills;
+    const penalty = ethToOutputAmount({
+        input,
+        output,
+        inputAmountPerEth,
+        outputAmountPerEth,
+        ethAmount: fee,
+    });
+
+    return {
+        sourcePathId,
+        input,
+        output,
+        adjustedOutput: adjustOutput(side, output, penalty),
+        source,
+        fillData,
+        type: FillQuoteTransformerOrderType.Bridge,
+        flags: SOURCE_FLAGS[source],
+        gas,
+    };
+}
+
+/**
+ *  Adjusts the output depending on whether this is a buy or a sell.
+ *
+ * If it is a sell, than output is lowered by the adjustment.
+ * If it is a buy, than output is increased by adjustment.
+ */
+export function adjustOutput(side: MarketOperation, output: BigNumber, penalty: BigNumber): BigNumber {
+    return side === MarketOperation.Sell ? output.minus(penalty) : output.plus(penalty);
 }

packages/asset-swapper/src/utils/market_operation_utils/identity_fill_adjustor.ts

@@ -0,0 +1,13 @@
+import { BigNumber } from '@0x/utils';
+
+import { MarketOperation } from '../../types';
+
+import { Fill, FillAdjustor } from './types';
+
+// tslint:disable:prefer-function-over-method
+
+export class IdentityFillAdjustor implements FillAdjustor {
+    public adjustFills(side: MarketOperation, fills: Fill[], amount: BigNumber): Fill[] {
+        return fills;
+    }
+}

packages/asset-swapper/src/utils/market_operation_utils/index.ts

@@ -29,7 +29,6 @@ import {
     PriceComparisonsReport,
     QuoteReport,
 } from './../quote_report_generator';
-
 import { getComparisonPrices } from './comparison_price';
 import {
     BUY_SOURCE_FILTER_BY_CHAIN_ID,
@@ -41,19 +40,17 @@ import {
     SOURCE_FLAGS,
     ZERO_AMOUNT,
 } from './constants';
-import { createFills } from './fills';
+import { IdentityFillAdjustor } from './identity_fill_adjustor';
 import { getBestTwoHopQuote } from './multihop_utils';
 import { createOrdersFromTwoHopSample } from './orders';
 import { Path, PathPenaltyOpts } from './path';
-import { findOptimalPathJSAsync, findOptimalRustPathFromSamples } from './path_optimizer';
+import { findOptimalPathFromSamples } from './path_optimizer';
 import { DexOrderSampler, getSampleAmounts } from './sampler';
 import { SourceFilters } from './source_filters';
 import {
     AggregationError,
-    CollapsedFill,
     DexSample,
     ERC20BridgeSource,
-    Fill,
     GenerateOptimizedOrdersOpts,
     GetMarketOrdersOpts,
     MarketSideLiquidity,
@@ -62,8 +59,6 @@ import {
     OrderDomain,
 } from './types';
 
-const SHOULD_USE_RUST_ROUTER = process.env.RUST_ROUTER === 'true';
-
 // tslint:disable:boolean-naming
 
 export class MarketOperationUtils {
@@ -167,18 +162,20 @@ export class MarketOperationUtils {
             // Get native order fillable amounts.
             this._sampler.getLimitOrderFillableTakerAmounts(nativeOrders, this.contractAddresses.exchangeProxy),
             // Get ETH -> maker token price.
-            this._sampler.getMedianSellRate(
+            this._sampler.getBestNativeTokenSellRate(
                 feeSourceFilters.sources,
                 makerToken,
                 this._nativeFeeToken,
                 this._nativeFeeTokenAmount,
+                _opts.feeSchedule,
             ),
             // Get ETH -> taker token price.
-            this._sampler.getMedianSellRate(
+            this._sampler.getBestNativeTokenSellRate(
                 feeSourceFilters.sources,
                 takerToken,
                 this._nativeFeeToken,
                 this._nativeFeeTokenAmount,
+                _opts.feeSchedule,
             ),
             // Get sell quotes for taker -> maker.
             this._sampler.getSellQuotes(quoteSourceFilters.sources, makerToken, takerToken, sampleAmounts),
@@ -278,18 +275,20 @@ export class MarketOperationUtils {
             // Get native order fillable amounts.
             this._sampler.getLimitOrderFillableMakerAmounts(nativeOrders, this.contractAddresses.exchangeProxy),
             // Get ETH -> makerToken token price.
-            this._sampler.getMedianSellRate(
+            this._sampler.getBestNativeTokenSellRate(
                 feeSourceFilters.sources,
                 makerToken,
                 this._nativeFeeToken,
                 this._nativeFeeTokenAmount,
+                _opts.feeSchedule,
             ),
             // Get ETH -> taker token price.
-            this._sampler.getMedianSellRate(
+            this._sampler.getBestNativeTokenSellRate(
                 feeSourceFilters.sources,
                 takerToken,
                 this._nativeFeeToken,
                 this._nativeFeeTokenAmount,
+                _opts.feeSchedule,
             ),
             // Get buy quotes for taker -> maker.
             this._sampler.getBuyQuotes(quoteSourceFilters.sources, makerToken, takerToken, sampleAmounts),
@@ -384,11 +383,12 @@ export class MarketOperationUtils {
                 this._sampler.getLimitOrderFillableMakerAmounts(orders, this.contractAddresses.exchangeProxy),
             ),
             ...batchNativeOrders.map(orders =>
-                this._sampler.getMedianSellRate(
+                this._sampler.getBestNativeTokenSellRate(
                     feeSourceFilters.sources,
                     orders[0].order.takerToken,
                     this._nativeFeeToken,
                     this._nativeFeeTokenAmount,
+                    _opts.feeSchedule,
                 ),
             ),
             ...batchNativeOrders.map((orders, i) =>
@@ -455,6 +455,7 @@ export class MarketOperationUtils {
                             allowFallback: _opts.allowFallback,
                             gasPrice: _opts.gasPrice,
                             neonRouterNumSamples: _opts.neonRouterNumSamples,
+                            fillAdjustor: _opts.fillAdjustor,
                         },
                     );
                     return optimizerResult;
@@ -516,60 +517,38 @@ export class MarketOperationUtils {
         const takerAmountPerEth = side === MarketOperation.Sell ? inputAmountPerEth : outputAmountPerEth;
         const makerAmountPerEth = side === MarketOperation.Sell ? outputAmountPerEth : inputAmountPerEth;
 
-        let fills: Fill[][];
         // Find the optimal path using Rust router if enabled, otherwise fallback to JS Router
         let optimalPath: Path | undefined;
-        if (SHOULD_USE_RUST_ROUTER) {
-            fills = [[]];
-            optimalPath = findOptimalRustPathFromSamples(
-                side,
-                dexQuotes,
-                [...nativeOrders, ...augmentedRfqtIndicativeQuotes],
-                inputAmount,
-                penaltyOpts,
-                opts.feeSchedule,
-                this._sampler.chainId,
-                opts.neonRouterNumSamples,
-                opts.samplerMetrics,
-            );
-        } else {
-            // Convert native orders and dex quotes into `Fill` objects.
-            fills = createFills({
-                side,
-                orders: [...nativeOrders, ...augmentedRfqtIndicativeQuotes],
-                dexQuotes,
-                targetInput: inputAmount,
-                outputAmountPerEth,
-                inputAmountPerEth,
-                excludedSources: opts.excludedSources,
-                feeSchedule: opts.feeSchedule,
-            });
+        optimalPath = findOptimalPathFromSamples(
+            side,
+            dexQuotes,
+            [...nativeOrders, ...augmentedRfqtIndicativeQuotes],
+            inputAmount,
+            penaltyOpts,
+            opts.feeSchedule,
+            this._sampler.chainId,
+            opts.neonRouterNumSamples,
+            opts.fillAdjustor,
+            opts.samplerMetrics,
+        );
 
-            optimalPath = await findOptimalPathJSAsync(
-                side,
-                fills,
-                inputAmount,
-                opts.runLimit,
-                opts.samplerMetrics,
-                penaltyOpts,
-            );
-        }
+        const optimalPathAdjustedRate = optimalPath ? optimalPath.adjustedRate() : ZERO_AMOUNT;
 
-        const optimalPathRate = optimalPath ? optimalPath.adjustedRate() : ZERO_AMOUNT;
-
-        const { adjustedRate: bestTwoHopRate, quote: bestTwoHopQuote } = getBestTwoHopQuote(
+        const { adjustedRate: bestTwoHopAdjustedRate, quote: bestTwoHopQuote } = getBestTwoHopQuote(
             marketSideLiquidity,
             opts.feeSchedule,
             opts.exchangeProxyOverhead,
+            opts.fillAdjustor,
         );
-        if (bestTwoHopQuote && bestTwoHopRate.isGreaterThan(optimalPathRate)) {
+
+        if (bestTwoHopQuote && bestTwoHopAdjustedRate.isGreaterThan(optimalPathAdjustedRate)) {
             const twoHopOrders = createOrdersFromTwoHopSample(bestTwoHopQuote, orderOpts);
             return {
                 optimizedOrders: twoHopOrders,
                 liquidityDelivered: bestTwoHopQuote,
                 sourceFlags: SOURCE_FLAGS[ERC20BridgeSource.MultiHop],
                 marketSideLiquidity,
-                adjustedRate: bestTwoHopRate,
+                adjustedRate: bestTwoHopAdjustedRate,
                 takerAmountPerEth,
                 makerAmountPerEth,
             };
@@ -580,19 +559,14 @@ export class MarketOperationUtils {
             throw new Error(AggregationError.NoOptimalPath);
         }
 
-        // Generate a fallback path if required
-        // TODO(kimpers): Will experiment with disabling this and see how it affects revert rate
-        // to avoid yet another router roundtrip
-        // TODO: clean this up if we don't need it
-        // await this._addOptionalFallbackAsync(side, inputAmount, optimalPath, dexQuotes, fills, opts, penaltyOpts);
-        const collapsedPath = optimalPath.collapse(orderOpts);
+        const finalizedPath = optimalPath.finalize(orderOpts);
 
         return {
-            optimizedOrders: collapsedPath.orders,
-            liquidityDelivered: collapsedPath.collapsedFills as CollapsedFill[],
-            sourceFlags: collapsedPath.sourceFlags,
+            optimizedOrders: finalizedPath.orders,
+            liquidityDelivered: finalizedPath.fills,
+            sourceFlags: finalizedPath.sourceFlags,
             marketSideLiquidity,
-            adjustedRate: optimalPathRate,
+            adjustedRate: optimalPathAdjustedRate,
             takerAmountPerEth,
             makerAmountPerEth,
         };
@@ -618,6 +592,7 @@ export class MarketOperationUtils {
             gasPrice: _opts.gasPrice,
             neonRouterNumSamples: _opts.neonRouterNumSamples,
             samplerMetrics: _opts.samplerMetrics,
+            fillAdjustor: _opts.fillAdjustor,
         };
 
         if (nativeOrders.length === 0) {
@@ -630,9 +605,15 @@ export class MarketOperationUtils {
                 ? this.getMarketSellLiquidityAsync.bind(this)
                 : this.getMarketBuyLiquidityAsync.bind(this);
         const marketSideLiquidity: MarketSideLiquidity = await marketLiquidityFnAsync(nativeOrders, amount, _opts);
+
+        // Phase 1 Routing
+        // We find an optimized path for ALL the DEX and open-orderbook liquidity
         let optimizerResult: OptimizerResult | undefined;
         try {
-            optimizerResult = await this._generateOptimizedOrdersAsync(marketSideLiquidity, optimizerOpts);
+            optimizerResult = await this._generateOptimizedOrdersAsync(marketSideLiquidity, {
+                ...optimizerOpts,
+                fillAdjustor: new IdentityFillAdjustor(),
+            });
         } catch (e) {
             // If no on-chain or off-chain Open Orderbook orders are present, a `NoOptimalPath` will be thrown.
             // If this happens at this stage, there is still a chance that an RFQ order is fillable, therefore
@@ -656,6 +637,17 @@ export class MarketOperationUtils {
         }
 
         // If RFQ liquidity is enabled, make a request to check RFQ liquidity against the first optimizer result
+
+        // Phase 2 Routing
+        // Mix in any off-chain RFQ quotes
+        // Apply any fill adjustments i
+        const phaseTwoOptimizerOpts = {
+            ...optimizerOpts,
+            // Pass in the FillAdjustor for Phase 2 adjustment, in the future we may perform this adjustment
+            // in Phase 1.
+            fillAdjustor: _opts.fillAdjustor,
+        };
+
         const { rfqt } = _opts;
         if (
             marketSideLiquidity.isRfqSupported &&
@@ -716,8 +708,28 @@ export class MarketOperationUtils {
                 });
                 // Re-run optimizer with the new indicative quote
                 if (indicativeQuotes.length > 0) {
+                    // Attach the indicative quotes to the market side liquidity
                     marketSideLiquidity.quotes.rfqtIndicativeQuotes = indicativeQuotes;
-                    optimizerResult = await this._generateOptimizedOrdersAsync(marketSideLiquidity, optimizerOpts);
+
+                    // Phase 2 Routing
+                    const phase1OptimalSources = optimizerResult
+                        ? optimizerResult.optimizedOrders.map(o => o.source)
+                        : [];
+                    const phase2MarketSideLiquidity: MarketSideLiquidity = {
+                        ...marketSideLiquidity,
+                        quotes: {
+                            ...marketSideLiquidity.quotes,
+                            // Select only the quotes that were chosen in Phase 1
+                            dexQuotes: marketSideLiquidity.quotes.dexQuotes.filter(
+                                q => q.length > 0 && phase1OptimalSources.includes(q[0].source),
+                            ),
+                        },
+                    };
+
+                    optimizerResult = await this._generateOptimizedOrdersAsync(
+                        phase2MarketSideLiquidity,
+                        phaseTwoOptimizerOpts,
+                    );
                 }
             } else {
                 // A firm quote is being requested, and firm quotes price-aware enabled.
@@ -775,6 +787,8 @@ export class MarketOperationUtils {
                             fillableTakerFeeAmount: ZERO_AMOUNT,
                         }),
                     );
+
+                    // Attach the firm RFQt quotes to the market side liquidity
                     marketSideLiquidity.quotes.nativeOrders = [
                         ...quotesWithOrderFillableAmounts,
                         ...marketSideLiquidity.quotes.nativeOrders,
@@ -783,7 +797,27 @@ export class MarketOperationUtils {
                     // Re-run optimizer with the new firm quote. This is the second and last time
                     // we run the optimized in a block of code. In this case, we don't catch a potential `NoOptimalPath` exception
                     // and we let it bubble up if it happens.
-                    optimizerResult = await this._generateOptimizedOrdersAsync(marketSideLiquidity, optimizerOpts);
+
+                    // Phase 2 Routing
+                    // Optimization: Filter by what is already currently in the Phase1 output as it doesn't
+                    // seem possible that inclusion of RFQT could impact the sources chosen from Phase 1.
+                    const phase1OptimalSources = optimizerResult
+                        ? optimizerResult.optimizedOrders.map(o => o.source)
+                        : [];
+                    const phase2MarketSideLiquidity: MarketSideLiquidity = {
+                        ...marketSideLiquidity,
+                        quotes: {
+                            ...marketSideLiquidity.quotes,
+                            // Select only the quotes that were chosen in Phase 1
+                            dexQuotes: marketSideLiquidity.quotes.dexQuotes.filter(
+                                q => q.length > 0 && phase1OptimalSources.includes(q[0].source),
+                            ),
+                        },
+                    };
+                    optimizerResult = await this._generateOptimizedOrdersAsync(
+                        phase2MarketSideLiquidity,
+                        phaseTwoOptimizerOpts,
+                    );
                 }
             }
         }
@@ -827,84 +861,10 @@ export class MarketOperationUtils {
     }
 
     private async _refreshPoolCacheIfRequiredAsync(takerToken: string, makerToken: string): Promise<void> {
-        void Promise.all(
-            Object.values(this._sampler.poolsCaches).map(async cache => {
-                if (!cache || cache.isFresh(takerToken, makerToken)) {
-                    return Promise.resolve([]);
-                }
-                return cache.getFreshPoolsForPairAsync(takerToken, makerToken);
-            }),
-        );
+        _.values(this._sampler.poolsCaches)
+            .filter(cache => cache !== undefined && !cache.isFresh(takerToken, makerToken))
+            .forEach(cache => cache?.getFreshPoolsForPairAsync(takerToken, makerToken));
     }
-
-    /*
-     * TODO(kimpers): Remove this when we know that it's safe to drop the fallbacks on native orders
-    // tslint:disable-next-line: prefer-function-over-method
-    private async _addOptionalFallbackAsync(
-        side: MarketOperation,
-        inputAmount: BigNumber,
-        optimalPath: Path,
-        dexQuotes: DexSample[][],
-        fills: Fill[][],
-        opts: GenerateOptimizedOrdersOpts,
-        penaltyOpts: PathPenaltyOpts,
-    ): Promise<void> {
-        const maxFallbackSlippage = opts.maxFallbackSlippage || 0;
-        const optimalPathRate = optimalPath ? optimalPath.adjustedRate() : ZERO_AMOUNT;
-        // Generate a fallback path if sources requiring a fallback (fragile) are in the optimal path.
-        // Native is relatively fragile (limit order collision, expiry, or lack of available maker balance)
-        // LiquidityProvider is relatively fragile (collision)
-        const fragileSources = [ERC20BridgeSource.Native, ERC20BridgeSource.LiquidityProvider];
-        const fragileFills = optimalPath.fills.filter(f => fragileSources.includes(f.source));
-        if (opts.allowFallback && fragileFills.length !== 0) {
-            // We create a fallback path that is exclusive of Native liquidity
-            // This is the optimal on-chain path for the entire input amount
-            const sturdyPenaltyOpts = {
-                ...penaltyOpts,
-                exchangeProxyOverhead: (sourceFlags: bigint) =>
-                    // tslint:disable-next-line: no-bitwise
-                    penaltyOpts.exchangeProxyOverhead(sourceFlags | optimalPath.sourceFlags),
-            };
-
-            let sturdyOptimalPath: Path | undefined;
-            if (SHOULD_USE_RUST_ROUTER) {
-                const sturdySamples = dexQuotes.filter(
-                    samples => samples.length > 0 && !fragileSources.includes(samples[0].source),
-                );
-                sturdyOptimalPath = findOptimalRustPathFromSamples(
-                    side,
-                    sturdySamples,
-                    [],
-                    inputAmount,
-                    sturdyPenaltyOpts,
-                    opts.feeSchedule,
-                    this._sampler.chainId,
-                    opts.neonRouterNumSamples,
-                    undefined, // hack: set sampler metrics to undefined to avoid fallback timings
-                );
-            } else {
-                const sturdyFills = fills.filter(p => p.length > 0 && !fragileSources.includes(p[0].source));
-                sturdyOptimalPath = await findOptimalPathJSAsync(
-                    side,
-                    sturdyFills,
-                    inputAmount,
-                    opts.runLimit,
-                    undefined, // hack: set sampler metrics to undefined to avoid fallback timings
-                    sturdyPenaltyOpts,
-                );
-            }
-            // Calculate the slippage of on-chain sources compared to the most optimal path
-            // if within an acceptable threshold we enable a fallback to prevent reverts
-            if (
-                sturdyOptimalPath !== undefined &&
-                (fragileFills.length === optimalPath.fills.length ||
-                    sturdyOptimalPath.adjustedSlippage(optimalPathRate) <= maxFallbackSlippage)
-            ) {
-                optimalPath.addFallback(sturdyOptimalPath);
-            }
-        }
-    }
-    */
 }
 
 // tslint:disable: max-file-line-count

packages/asset-swapper/src/utils/market_operation_utils/multihop_utils.ts

@@ -9,28 +9,11 @@ import {
     DexSample,
     ExchangeProxyOverhead,
     FeeSchedule,
+    FillAdjustor,
     MarketSideLiquidity,
     MultiHopFillData,
-    TokenAdjacencyGraph,
 } from './types';
 
-/**
- * Given a token pair, returns the intermediate tokens to consider for two-hop routes.
- */
-export function getIntermediateTokens(
-    makerToken: string,
-    takerToken: string,
-    tokenAdjacencyGraph: TokenAdjacencyGraph,
-): string[] {
-    const intermediateTokens = _.union(
-        _.get(tokenAdjacencyGraph, takerToken, tokenAdjacencyGraph.default),
-        _.get(tokenAdjacencyGraph, makerToken, tokenAdjacencyGraph.default),
-    );
-    return _.uniqBy(intermediateTokens, a => a.toLowerCase()).filter(
-        token => token.toLowerCase() !== makerToken.toLowerCase() && token.toLowerCase() !== takerToken.toLowerCase(),
-    );
-}
-
 /**
  * Returns the best two-hop quote and the fee-adjusted rate of that quote.
  */
@@ -38,6 +21,7 @@ export function getBestTwoHopQuote(
     marketSideLiquidity: Omit<MarketSideLiquidity, 'makerTokenDecimals' | 'takerTokenDecimals'>,
     feeSchedule?: FeeSchedule,
     exchangeProxyOverhead?: ExchangeProxyOverhead,
+    fillAdjustor?: FillAdjustor,
 ): { quote: DexSample<MultiHopFillData> | undefined; adjustedRate: BigNumber } {
     const { side, inputAmount, outputAmountPerEth, quotes } = marketSideLiquidity;
     const { twoHopQuotes } = quotes;
@@ -57,7 +41,15 @@ export function getBestTwoHopQuote(
     }
     const best = filteredQuotes
         .map(quote =>
-            getTwoHopAdjustedRate(side, quote, inputAmount, outputAmountPerEth, feeSchedule, exchangeProxyOverhead),
+            getTwoHopAdjustedRate(
+                side,
+                quote,
+                inputAmount,
+                outputAmountPerEth,
+                feeSchedule,
+                exchangeProxyOverhead,
+                fillAdjustor,
+            ),
         )
         .reduce(
             (prev, curr, i) =>
@@ -70,6 +62,7 @@ export function getBestTwoHopQuote(
                     outputAmountPerEth,
                     feeSchedule,
                     exchangeProxyOverhead,
+                    fillAdjustor,
                 ),
                 quote: filteredQuotes[0],
             },

packages/asset-swapper/src/utils/market_operation_utils/orders.ts

@@ -1,5 +1,6 @@
 import { BridgeProtocol, encodeBridgeSourceId, FillQuoteTransformerOrderType } from '@0x/protocol-utils';
 import { AbiEncoder, BigNumber } from '@0x/utils';
+import _ = require('lodash');
 
 import { AssetSwapperContractAddresses, MarketOperation } from '../../types';
 
@@ -7,29 +8,27 @@ import { MAX_UINT256, ZERO_AMOUNT } from './constants';
 import {
     AaveV2FillData,
     AggregationError,
-    BalancerFillData,
     BalancerV2BatchSwapFillData,
     BalancerV2FillData,
     BancorFillData,
-    CollapsedFill,
     CompoundFillData,
     CurveFillData,
     DexSample,
     DODOFillData,
     ERC20BridgeSource,
+    Fill,
     FillData,
     FinalUniswapV3FillData,
     GeistFillData,
     GenericRouterFillData,
     GMXFillData,
     KyberDmmFillData,
-    KyberFillData,
     LidoFillData,
     LiquidityProviderFillData,
     MakerPsmFillData,
     MooniswapFillData,
     MultiHopFillData,
-    NativeCollapsedFill,
+    NativeFillData,
     NativeLimitOrderFillData,
     NativeRfqOrderFillData,
     OptimizedMarketBridgeOrder,
@@ -38,9 +37,12 @@ import {
     OrderDomain,
     PlatypusFillData,
     ShellFillData,
+    SynthetixFillData,
     UniswapV2FillData,
     UniswapV3FillData,
     UniswapV3PathAmount,
+    VelodromeFillData,
+    WOOFiFillData,
 } from './types';
 
 // tslint:disable completed-docs
@@ -60,23 +62,27 @@ export function createOrdersFromTwoHopSample(
 ): OptimizedMarketOrder[] {
     const [makerToken, takerToken] = getMakerTakerTokens(opts);
     const { firstHopSource, secondHopSource, intermediateToken } = sample.fillData;
-    const firstHopFill: CollapsedFill = {
+    const firstHopFill: Fill = {
         sourcePathId: '',
         source: firstHopSource.source,
         type: FillQuoteTransformerOrderType.Bridge,
         input: opts.side === MarketOperation.Sell ? sample.input : ZERO_AMOUNT,
         output: opts.side === MarketOperation.Sell ? ZERO_AMOUNT : sample.output,
-        subFills: [],
+        adjustedOutput: opts.side === MarketOperation.Sell ? ZERO_AMOUNT : sample.output,
         fillData: firstHopSource.fillData,
+        flags: BigInt(0),
+        gas: 1,
     };
-    const secondHopFill: CollapsedFill = {
+    const secondHopFill: Fill = {
         sourcePathId: '',
         source: secondHopSource.source,
         type: FillQuoteTransformerOrderType.Bridge,
         input: opts.side === MarketOperation.Sell ? MAX_UINT256 : sample.input,
         output: opts.side === MarketOperation.Sell ? sample.output : MAX_UINT256,
-        subFills: [],
+        adjustedOutput: opts.side === MarketOperation.Sell ? sample.output : MAX_UINT256,
         fillData: secondHopSource.fillData,
+        flags: BigInt(0),
+        gas: 1,
     };
     return [
         createBridgeOrder(firstHopFill, intermediateToken, takerToken, opts.side),
@@ -92,18 +98,12 @@ export function getErc20BridgeSourceToBridgeSource(source: ERC20BridgeSource): s
             return encodeBridgeSourceId(BridgeProtocol.BalancerV2Batch, 'BalancerV2');
         case ERC20BridgeSource.Bancor:
             return encodeBridgeSourceId(BridgeProtocol.Bancor, 'Bancor');
-        // case ERC20BridgeSource.CoFiX:
-        //    return encodeBridgeSourceId(BridgeProtocol.CoFiX, 'CoFiX');
         case ERC20BridgeSource.Curve:
             return encodeBridgeSourceId(BridgeProtocol.Curve, 'Curve');
-        case ERC20BridgeSource.Cream:
-            return encodeBridgeSourceId(BridgeProtocol.Balancer, 'Cream');
         case ERC20BridgeSource.CryptoCom:
             return encodeBridgeSourceId(BridgeProtocol.CryptoCom, 'CryptoCom');
         case ERC20BridgeSource.Dodo:
             return encodeBridgeSourceId(BridgeProtocol.Dodo, 'Dodo');
-        case ERC20BridgeSource.Kyber:
-            return encodeBridgeSourceId(BridgeProtocol.Kyber, 'Kyber');
         case ERC20BridgeSource.LiquidityProvider:
             // "LiquidityProvider" is too long to encode (17 characters).
             return encodeBridgeSourceId(BridgeProtocol.Unknown, 'LP');
@@ -139,44 +139,32 @@ export function getErc20BridgeSourceToBridgeSource(source: ERC20BridgeSource): s
             return encodeBridgeSourceId(BridgeProtocol.Curve, 'Ellipsis');
         case ERC20BridgeSource.Component:
             return encodeBridgeSourceId(BridgeProtocol.Shell, 'Component');
-        case ERC20BridgeSource.Smoothy:
-            return encodeBridgeSourceId(BridgeProtocol.Curve, 'Smoothy');
         case ERC20BridgeSource.Saddle:
             return encodeBridgeSourceId(BridgeProtocol.Nerve, 'Saddle');
         case ERC20BridgeSource.XSigma:
             return encodeBridgeSourceId(BridgeProtocol.Curve, 'xSigma');
         case ERC20BridgeSource.ApeSwap:
             return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'ApeSwap');
-        case ERC20BridgeSource.CafeSwap:
-            return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'CafeSwap');
         case ERC20BridgeSource.CheeseSwap:
             return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'CheeseSwap');
-        case ERC20BridgeSource.JulSwap:
-            return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'JulSwap');
         case ERC20BridgeSource.UniswapV3:
             return encodeBridgeSourceId(BridgeProtocol.UniswapV3, 'UniswapV3');
         case ERC20BridgeSource.KyberDmm:
             return encodeBridgeSourceId(BridgeProtocol.KyberDmm, 'KyberDmm');
         case ERC20BridgeSource.QuickSwap:
             return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'QuickSwap');
-        case ERC20BridgeSource.ComethSwap:
-            return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'ComethSwap');
         case ERC20BridgeSource.Dfyn:
             return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'Dfyn');
         case ERC20BridgeSource.CurveV2:
             return encodeBridgeSourceId(BridgeProtocol.CurveV2, 'CurveV2');
         case ERC20BridgeSource.WaultSwap:
             return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'WaultSwap');
-        case ERC20BridgeSource.Polydex:
-            return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'Polydex');
         case ERC20BridgeSource.FirebirdOneSwap:
             return encodeBridgeSourceId(BridgeProtocol.Nerve, 'FirebirdOneSwap');
         case ERC20BridgeSource.Lido:
             return encodeBridgeSourceId(BridgeProtocol.Lido, 'Lido');
         case ERC20BridgeSource.ShibaSwap:
             return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'ShibaSwap');
-        case ERC20BridgeSource.JetSwap:
-            return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'JetSwap');
         case ERC20BridgeSource.IronSwap:
             return encodeBridgeSourceId(BridgeProtocol.Nerve, 'IronSwap');
         case ERC20BridgeSource.ACryptos:
@@ -207,10 +195,24 @@ export function getErc20BridgeSourceToBridgeSource(source: ERC20BridgeSource): s
             return encodeBridgeSourceId(BridgeProtocol.Nerve, 'MobiusMoney');
         case ERC20BridgeSource.BiSwap:
             return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'BiSwap');
+        case ERC20BridgeSource.MDex:
+            return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'MDex');
+        case ERC20BridgeSource.KnightSwap:
+            return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'KnightSwap');
         case ERC20BridgeSource.GMX:
             return encodeBridgeSourceId(BridgeProtocol.GMX, 'GMX');
         case ERC20BridgeSource.Platypus:
             return encodeBridgeSourceId(BridgeProtocol.Platypus, 'Platypus');
+        case ERC20BridgeSource.MeshSwap:
+            return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'MeshSwap');
+        case ERC20BridgeSource.BancorV3:
+            return encodeBridgeSourceId(BridgeProtocol.BancorV3, 'BancorV3');
+        case ERC20BridgeSource.Velodrome:
+            return encodeBridgeSourceId(BridgeProtocol.Velodrome, 'Velodrome');
+        case ERC20BridgeSource.Synthetix:
+            return encodeBridgeSourceId(BridgeProtocol.Synthetix, 'Synthetix');
+        case ERC20BridgeSource.WOOFi:
+            return encodeBridgeSourceId(BridgeProtocol.WOOFi, 'WOOFi');
         default:
             throw new Error(AggregationError.NoBridgeForSource);
     }
@@ -238,7 +240,6 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
         case ERC20BridgeSource.Synapse:
         case ERC20BridgeSource.Belt:
         case ERC20BridgeSource.Ellipsis:
-        case ERC20BridgeSource.Smoothy:
         case ERC20BridgeSource.Saddle:
         case ERC20BridgeSource.XSigma:
         case ERC20BridgeSource.FirebirdOneSwap:
@@ -254,10 +255,6 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
             ]);
             break;
         case ERC20BridgeSource.Balancer:
-        case ERC20BridgeSource.Cream:
-            const balancerFillData = (order as OptimizedMarketBridgeOrder<BalancerFillData>).fillData;
-            bridgeData = encoder.encode([balancerFillData.poolAddress]);
-            break;
         case ERC20BridgeSource.BalancerV2:
             {
                 const balancerV2FillData = (order as OptimizedMarketBridgeOrder<BalancerV2BatchSwapFillData>).fillData;
@@ -284,16 +281,11 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
         case ERC20BridgeSource.PancakeSwapV2:
         case ERC20BridgeSource.BakerySwap:
         case ERC20BridgeSource.ApeSwap:
-        case ERC20BridgeSource.CafeSwap:
         case ERC20BridgeSource.CheeseSwap:
-        case ERC20BridgeSource.JulSwap:
         case ERC20BridgeSource.QuickSwap:
-        case ERC20BridgeSource.ComethSwap:
         case ERC20BridgeSource.Dfyn:
         case ERC20BridgeSource.WaultSwap:
-        case ERC20BridgeSource.Polydex:
         case ERC20BridgeSource.ShibaSwap:
-        case ERC20BridgeSource.JetSwap:
         case ERC20BridgeSource.Pangolin:
         case ERC20BridgeSource.TraderJoe:
         case ERC20BridgeSource.UbeSwap:
@@ -301,14 +293,13 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
         case ERC20BridgeSource.SpookySwap:
         case ERC20BridgeSource.MorpheusSwap:
         case ERC20BridgeSource.BiSwap:
+        case ERC20BridgeSource.MDex:
+        case ERC20BridgeSource.KnightSwap:
         case ERC20BridgeSource.Yoshi:
+        case ERC20BridgeSource.MeshSwap:
             const uniswapV2FillData = (order as OptimizedMarketBridgeOrder<UniswapV2FillData>).fillData;
             bridgeData = encoder.encode([uniswapV2FillData.router, uniswapV2FillData.tokenAddressPath]);
             break;
-        case ERC20BridgeSource.Kyber:
-            const kyberFillData = (order as OptimizedMarketBridgeOrder<KyberFillData>).fillData;
-            bridgeData = encoder.encode([kyberFillData.networkProxy, kyberFillData.hint]);
-            break;
         case ERC20BridgeSource.Mooniswap:
             const mooniswapFillData = (order as OptimizedMarketBridgeOrder<MooniswapFillData>).fillData;
             bridgeData = encoder.encode([mooniswapFillData.poolAddress]);
@@ -360,7 +351,7 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
             break;
         case ERC20BridgeSource.Lido:
             const lidoFillData = (order as OptimizedMarketBridgeOrder<LidoFillData>).fillData;
-            bridgeData = encoder.encode([lidoFillData.stEthTokenAddress]);
+            bridgeData = encoder.encode([lidoFillData.stEthTokenAddress, lidoFillData.wstEthTokenAddress]);
             break;
         case ERC20BridgeSource.AaveV2:
             const aaveFillData = (order as OptimizedMarketBridgeOrder<AaveV2FillData>).fillData;
@@ -391,34 +382,210 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
                 platypusFillData.tokenAddressPath,
             ]);
             break;
-
+        case ERC20BridgeSource.BancorV3:
+            const bancorV3FillData = (order as OptimizedMarketBridgeOrder<BancorFillData>).fillData;
+            bridgeData = encoder.encode([bancorV3FillData.networkAddress, bancorV3FillData.path]);
+            break;
+        case ERC20BridgeSource.Velodrome:
+            const velodromeFillData = (order as OptimizedMarketBridgeOrder<VelodromeFillData>).fillData;
+            bridgeData = encoder.encode([velodromeFillData.router, velodromeFillData.stable]);
+            break;
+        case ERC20BridgeSource.Synthetix:
+            const fillData = (order as OptimizedMarketBridgeOrder<SynthetixFillData>).fillData;
+            bridgeData = encoder.encode([
+                fillData.synthetix,
+                fillData.takerTokenSymbolBytes32,
+                fillData.makerTokenSymbolBytes32,
+            ]);
+            break;
+        case ERC20BridgeSource.WOOFi:
+            const woofiFillData = (order as OptimizedMarketBridgeOrder<WOOFiFillData>).fillData;
+            bridgeData = encoder.encode([woofiFillData.poolAddress]);
+            break;
         default:
             throw new Error(AggregationError.NoBridgeForSource);
     }
     return bridgeData;
 }
 
+export const poolEncoder = AbiEncoder.create([{ name: 'poolAddress', type: 'address' }]);
+const curveEncoder = AbiEncoder.create([
+    { name: 'curveAddress', type: 'address' },
+    { name: 'exchangeFunctionSelector', type: 'bytes4' },
+    { name: 'fromTokenIdx', type: 'int128' },
+    { name: 'toTokenIdx', type: 'int128' },
+]);
+const makerPsmEncoder = AbiEncoder.create([
+    { name: 'psmAddress', type: 'address' },
+    { name: 'gemTokenAddress', type: 'address' },
+]);
+const balancerV2Encoder = AbiEncoder.create([
+    { name: 'vault', type: 'address' },
+    { name: 'poolId', type: 'bytes32' },
+]);
+const routerAddressPathEncoder = AbiEncoder.create('(address,address[])');
+const tokenAddressEncoder = AbiEncoder.create([{ name: 'tokenAddress', type: 'address' }]);
+const gmxAddressPathEncoder = AbiEncoder.create('(address,address,address,address[])');
+const platypusAddressPathEncoder = AbiEncoder.create('(address,address[],address[])');
+
+export const BRIDGE_ENCODERS: {
+    [key in Exclude<
+        ERC20BridgeSource,
+        ERC20BridgeSource.Native | ERC20BridgeSource.MultiHop | ERC20BridgeSource.MultiBridge
+    >]: AbiEncoder.DataType;
+} = {
+    [ERC20BridgeSource.LiquidityProvider]: AbiEncoder.create([
+        { name: 'provider', type: 'address' },
+        { name: 'data', type: 'bytes' },
+    ]),
+    [ERC20BridgeSource.Dodo]: AbiEncoder.create([
+        { name: 'helper', type: 'address' },
+        { name: 'poolAddress', type: 'address' },
+        { name: 'isSellBase', type: 'bool' },
+    ]),
+    [ERC20BridgeSource.DodoV2]: AbiEncoder.create([
+        { name: 'poolAddress', type: 'address' },
+        { name: 'isSellBase', type: 'bool' },
+    ]),
+    // Curve like
+    [ERC20BridgeSource.Curve]: curveEncoder,
+    [ERC20BridgeSource.CurveV2]: curveEncoder,
+    [ERC20BridgeSource.Nerve]: curveEncoder,
+    [ERC20BridgeSource.Synapse]: curveEncoder,
+    [ERC20BridgeSource.Belt]: curveEncoder,
+    [ERC20BridgeSource.Ellipsis]: curveEncoder,
+    [ERC20BridgeSource.Saddle]: curveEncoder,
+    [ERC20BridgeSource.XSigma]: curveEncoder,
+    [ERC20BridgeSource.FirebirdOneSwap]: curveEncoder,
+    [ERC20BridgeSource.IronSwap]: curveEncoder,
+    [ERC20BridgeSource.ACryptos]: curveEncoder,
+    [ERC20BridgeSource.MobiusMoney]: curveEncoder,
+    // UniswapV2 like, (router, address[])
+    [ERC20BridgeSource.Bancor]: routerAddressPathEncoder,
+    [ERC20BridgeSource.BancorV3]: routerAddressPathEncoder,
+    [ERC20BridgeSource.UniswapV2]: routerAddressPathEncoder,
+    [ERC20BridgeSource.SushiSwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.CryptoCom]: routerAddressPathEncoder,
+    [ERC20BridgeSource.ShibaSwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.Pangolin]: routerAddressPathEncoder,
+    [ERC20BridgeSource.TraderJoe]: routerAddressPathEncoder,
+    [ERC20BridgeSource.SpiritSwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.SpookySwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.MorpheusSwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.BiSwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.MDex]: routerAddressPathEncoder,
+    [ERC20BridgeSource.KnightSwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.Yoshi]: routerAddressPathEncoder,
+    [ERC20BridgeSource.MeshSwap]: routerAddressPathEncoder,
+    // Avalanche
+    [ERC20BridgeSource.GMX]: gmxAddressPathEncoder,
+    [ERC20BridgeSource.Platypus]: platypusAddressPathEncoder,
+    // Celo
+    [ERC20BridgeSource.UbeSwap]: routerAddressPathEncoder,
+    // BSC
+    [ERC20BridgeSource.PancakeSwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.PancakeSwapV2]: routerAddressPathEncoder,
+    [ERC20BridgeSource.BakerySwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.ApeSwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.CheeseSwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.WaultSwap]: routerAddressPathEncoder,
+    // Polygon
+    [ERC20BridgeSource.QuickSwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.Dfyn]: routerAddressPathEncoder,
+    // Generic pools
+    [ERC20BridgeSource.Shell]: poolEncoder,
+    [ERC20BridgeSource.Component]: poolEncoder,
+    [ERC20BridgeSource.Mooniswap]: poolEncoder,
+    [ERC20BridgeSource.MStable]: poolEncoder,
+    [ERC20BridgeSource.Balancer]: poolEncoder,
+    [ERC20BridgeSource.Uniswap]: poolEncoder,
+    // Custom integrations
+    [ERC20BridgeSource.MakerPsm]: makerPsmEncoder,
+    [ERC20BridgeSource.BalancerV2]: AbiEncoder.create([
+        { name: 'vault', type: 'address' },
+        {
+            name: 'swapSteps',
+            type: 'tuple[]',
+            components: [
+                { name: 'poolId', type: 'bytes32' },
+                { name: 'assetInIndex', type: 'uint256' },
+                { name: 'assetOutIndex', type: 'uint256' },
+                { name: 'amount', type: 'uint256' },
+                { name: 'userData', type: 'bytes' },
+            ],
+        },
+        { name: 'assets', type: 'address[]' },
+    ]),
+    [ERC20BridgeSource.Beethovenx]: balancerV2Encoder,
+    [ERC20BridgeSource.UniswapV3]: AbiEncoder.create([
+        { name: 'router', type: 'address' },
+        { name: 'path', type: 'bytes' },
+    ]),
+    [ERC20BridgeSource.KyberDmm]: AbiEncoder.create('(address,address[],address[])'),
+    [ERC20BridgeSource.Lido]: AbiEncoder.create('(address,address)'),
+    [ERC20BridgeSource.AaveV2]: AbiEncoder.create('(address,address)'),
+    [ERC20BridgeSource.Compound]: AbiEncoder.create('(address)'),
+    [ERC20BridgeSource.Geist]: AbiEncoder.create('(address,address)'),
+    [ERC20BridgeSource.Velodrome]: AbiEncoder.create('(address,bool)'),
+    [ERC20BridgeSource.Synthetix]: AbiEncoder.create('(address,bytes32,bytes32)'),
+    [ERC20BridgeSource.WOOFi]: AbiEncoder.create('(address)'),
+};
+
+function getFillTokenAmounts(fill: Fill, side: MarketOperation): [BigNumber, BigNumber] {
+    return [
+        // Maker asset amount.
+        side === MarketOperation.Sell ? fill.output.integerValue(BigNumber.ROUND_DOWN) : fill.input,
+        // Taker asset amount.
+        side === MarketOperation.Sell ? fill.input : fill.output.integerValue(BigNumber.ROUND_UP),
+    ];
+}
+
+export function createNativeOptimizedOrder(
+    fill: Fill<NativeFillData>,
+    side: MarketOperation,
+): OptimizedMarketOrderBase<NativeLimitOrderFillData> | OptimizedMarketOrderBase<NativeRfqOrderFillData> {
+    const fillData = fill.fillData;
+    const [makerAmount, takerAmount] = getFillTokenAmounts(fill, side);
+    const base = {
+        type: fill.type,
+        source: ERC20BridgeSource.Native,
+        makerToken: fillData.order.makerToken,
+        takerToken: fillData.order.takerToken,
+        makerAmount,
+        takerAmount,
+        fillData,
+        fill: cleanFillForExport(fill),
+    };
+    return fill.type === FillQuoteTransformerOrderType.Rfq
+        ? { ...base, type: FillQuoteTransformerOrderType.Rfq, fillData: fillData as NativeRfqOrderFillData }
+        : { ...base, type: FillQuoteTransformerOrderType.Limit, fillData: fillData as NativeLimitOrderFillData };
+}
+
 export function createBridgeOrder(
-    fill: CollapsedFill,
+    fill: Fill,
     makerToken: string,
     takerToken: string,
     side: MarketOperation,
 ): OptimizedMarketBridgeOrder {
     const [makerAmount, takerAmount] = getFillTokenAmounts(fill, side);
     return {
+        type: FillQuoteTransformerOrderType.Bridge,
+        source: fill.source,
         makerToken,
         takerToken,
         makerAmount,
         takerAmount,
         fillData: createFinalBridgeOrderFillDataFromCollapsedFill(fill),
-        source: fill.source,
+        fill: cleanFillForExport(fill),
         sourcePathId: fill.sourcePathId,
-        type: FillQuoteTransformerOrderType.Bridge,
-        fills: [fill],
     };
 }
 
-function createFinalBridgeOrderFillDataFromCollapsedFill(fill: CollapsedFill): FillData {
+function cleanFillForExport(fill: Fill): Fill {
+    return _.omit(fill, ['flags', 'fillData', 'sourcePathId', 'source', 'type']) as Fill;
+}
+
+function createFinalBridgeOrderFillDataFromCollapsedFill(fill: Fill): FillData {
     switch (fill.source) {
         case ERC20BridgeSource.UniswapV3: {
             const fd = fill.fillData as UniswapV3FillData;
@@ -459,160 +626,3 @@ export function getMakerTakerTokens(opts: CreateOrderFromPathOpts): [string, str
     const takerToken = opts.side === MarketOperation.Sell ? opts.inputToken : opts.outputToken;
     return [makerToken, takerToken];
 }
-
-export const poolEncoder = AbiEncoder.create([{ name: 'poolAddress', type: 'address' }]);
-const curveEncoder = AbiEncoder.create([
-    { name: 'curveAddress', type: 'address' },
-    { name: 'exchangeFunctionSelector', type: 'bytes4' },
-    { name: 'fromTokenIdx', type: 'int128' },
-    { name: 'toTokenIdx', type: 'int128' },
-]);
-const makerPsmEncoder = AbiEncoder.create([
-    { name: 'psmAddress', type: 'address' },
-    { name: 'gemTokenAddress', type: 'address' },
-]);
-const balancerV2Encoder = AbiEncoder.create([
-    { name: 'vault', type: 'address' },
-    { name: 'poolId', type: 'bytes32' },
-]);
-const routerAddressPathEncoder = AbiEncoder.create('(address,address[])');
-const tokenAddressEncoder = AbiEncoder.create([{ name: 'tokenAddress', type: 'address' }]);
-const gmxAddressPathEncoder = AbiEncoder.create('(address,address,address,address[])');
-const platypusAddressPathEncoder = AbiEncoder.create('(address,address[],address[])');
-
-export const BRIDGE_ENCODERS: {
-    [key in Exclude<
-        ERC20BridgeSource,
-        ERC20BridgeSource.Native | ERC20BridgeSource.MultiHop | ERC20BridgeSource.MultiBridge
-    >]: AbiEncoder.DataType;
-} = {
-    [ERC20BridgeSource.LiquidityProvider]: AbiEncoder.create([
-        { name: 'provider', type: 'address' },
-        { name: 'data', type: 'bytes' },
-    ]),
-    [ERC20BridgeSource.Kyber]: AbiEncoder.create([
-        { name: 'kyberNetworkProxy', type: 'address' },
-        { name: 'hint', type: 'bytes' },
-    ]),
-    [ERC20BridgeSource.Dodo]: AbiEncoder.create([
-        { name: 'helper', type: 'address' },
-        { name: 'poolAddress', type: 'address' },
-        { name: 'isSellBase', type: 'bool' },
-    ]),
-    [ERC20BridgeSource.DodoV2]: AbiEncoder.create([
-        { name: 'poolAddress', type: 'address' },
-        { name: 'isSellBase', type: 'bool' },
-    ]),
-    // Curve like
-    [ERC20BridgeSource.Curve]: curveEncoder,
-    [ERC20BridgeSource.CurveV2]: curveEncoder,
-    [ERC20BridgeSource.Nerve]: curveEncoder,
-    [ERC20BridgeSource.Synapse]: curveEncoder,
-    [ERC20BridgeSource.Belt]: curveEncoder,
-    [ERC20BridgeSource.Ellipsis]: curveEncoder,
-    [ERC20BridgeSource.Smoothy]: curveEncoder,
-    [ERC20BridgeSource.Saddle]: curveEncoder,
-    [ERC20BridgeSource.XSigma]: curveEncoder,
-    [ERC20BridgeSource.FirebirdOneSwap]: curveEncoder,
-    [ERC20BridgeSource.IronSwap]: curveEncoder,
-    [ERC20BridgeSource.ACryptos]: curveEncoder,
-    [ERC20BridgeSource.MobiusMoney]: curveEncoder,
-    // UniswapV2 like, (router, address[])
-    [ERC20BridgeSource.Bancor]: routerAddressPathEncoder,
-    [ERC20BridgeSource.UniswapV2]: routerAddressPathEncoder,
-    [ERC20BridgeSource.SushiSwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.CryptoCom]: routerAddressPathEncoder,
-    [ERC20BridgeSource.ShibaSwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.Pangolin]: routerAddressPathEncoder,
-    [ERC20BridgeSource.TraderJoe]: routerAddressPathEncoder,
-    [ERC20BridgeSource.SpiritSwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.SpookySwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.MorpheusSwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.BiSwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.Yoshi]: routerAddressPathEncoder,
-    // Avalanche
-    [ERC20BridgeSource.GMX]: gmxAddressPathEncoder,
-    [ERC20BridgeSource.Platypus]: platypusAddressPathEncoder,
-    // Celo
-    [ERC20BridgeSource.UbeSwap]: routerAddressPathEncoder,
-    // BSC
-    [ERC20BridgeSource.PancakeSwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.PancakeSwapV2]: routerAddressPathEncoder,
-    [ERC20BridgeSource.BakerySwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.ApeSwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.CafeSwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.CheeseSwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.JulSwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.WaultSwap]: routerAddressPathEncoder,
-    // Polygon
-    [ERC20BridgeSource.QuickSwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.ComethSwap]: routerAddressPathEncoder,
-    [ERC20BridgeSource.Dfyn]: routerAddressPathEncoder,
-    [ERC20BridgeSource.Polydex]: routerAddressPathEncoder,
-    [ERC20BridgeSource.JetSwap]: routerAddressPathEncoder,
-    // Generic pools
-    [ERC20BridgeSource.Shell]: poolEncoder,
-    [ERC20BridgeSource.Component]: poolEncoder,
-    [ERC20BridgeSource.Mooniswap]: poolEncoder,
-    [ERC20BridgeSource.MStable]: poolEncoder,
-    [ERC20BridgeSource.Balancer]: poolEncoder,
-    [ERC20BridgeSource.Cream]: poolEncoder,
-    [ERC20BridgeSource.Uniswap]: poolEncoder,
-    // Custom integrations
-    [ERC20BridgeSource.MakerPsm]: makerPsmEncoder,
-    [ERC20BridgeSource.BalancerV2]: AbiEncoder.create([
-        { name: 'vault', type: 'address' },
-        {
-            name: 'swapSteps',
-            type: 'tuple[]',
-            components: [
-                { name: 'poolId', type: 'bytes32' },
-                { name: 'assetInIndex', type: 'uint256' },
-                { name: 'assetOutIndex', type: 'uint256' },
-                { name: 'amount', type: 'uint256' },
-                { name: 'userData', type: 'bytes' },
-            ],
-        },
-        { name: 'assets', type: 'address[]' },
-    ]),
-    [ERC20BridgeSource.Beethovenx]: balancerV2Encoder,
-    [ERC20BridgeSource.UniswapV3]: AbiEncoder.create([
-        { name: 'router', type: 'address' },
-        { name: 'path', type: 'bytes' },
-    ]),
-    [ERC20BridgeSource.KyberDmm]: AbiEncoder.create('(address,address[],address[])'),
-    [ERC20BridgeSource.Lido]: AbiEncoder.create('(address)'),
-    [ERC20BridgeSource.AaveV2]: AbiEncoder.create('(address,address)'),
-    [ERC20BridgeSource.Compound]: AbiEncoder.create('(address)'),
-    [ERC20BridgeSource.Geist]: AbiEncoder.create('(address,address)'),
-};
-
-function getFillTokenAmounts(fill: CollapsedFill, side: MarketOperation): [BigNumber, BigNumber] {
-    return [
-        // Maker asset amount.
-        side === MarketOperation.Sell ? fill.output.integerValue(BigNumber.ROUND_DOWN) : fill.input,
-        // Taker asset amount.
-        side === MarketOperation.Sell ? fill.input : fill.output.integerValue(BigNumber.ROUND_UP),
-    ];
-}
-
-export function createNativeOptimizedOrder(
-    fill: NativeCollapsedFill,
-    side: MarketOperation,
-): OptimizedMarketOrderBase<NativeLimitOrderFillData> | OptimizedMarketOrderBase<NativeRfqOrderFillData> {
-    const fillData = fill.fillData;
-    const [makerAmount, takerAmount] = getFillTokenAmounts(fill, side);
-    const base = {
-        type: fill.type,
-        source: ERC20BridgeSource.Native,
-        makerToken: fillData.order.makerToken,
-        takerToken: fillData.order.takerToken,
-        makerAmount,
-        takerAmount,
-        fills: [fill],
-        fillData,
-    };
-    return fill.type === FillQuoteTransformerOrderType.Rfq
-        ? { ...base, type: FillQuoteTransformerOrderType.Rfq, fillData: fillData as NativeRfqOrderFillData }
-        : { ...base, type: FillQuoteTransformerOrderType.Limit, fillData: fillData as NativeLimitOrderFillData };
-}