Added Call.t.sol

* Add BiSwap (as UniV2 clone) on BSC

* changelog PR number

* add BSW

* remove BiSwap from transformer_utils

* Do not initialize BalancerV2SwapInfoCache on unsupported chains [TKR-365] (#472)

* Do not initialize BalancerV2SwapInfoCache on unsupported chains
* Update CHANGELOG.json

* Updated CHANGELOGS & MD docs

* Publish

 - @0x/asset-swapper@16.57.3

* chore: Decomission SnowSwap [TKR-356] (#468)

* Decomission SnowSwap

* SnowSwap doesn't have much liquidity anymore (the largest pool has ~$50k)

* Update CHANGELOG.json

* Update CHANGELOG.json

* chore: Offboard Swerve Finance and LinkSwap [TKR-356] (#469)

* Offboard swerve

* Update CHANGELOG.json

* Offboard LinkSwap

* Remove unused import

* Fix CHANGELOG.json

* chore: Offboard Eth2Dai [TKR-356] (#470)

* Offboard Eth2Dai

* Update CHANGELOG.json

* feat: add IRfqClient (#467)

* add message to changelog for #467 (#474)

* Update saddle mainnet pools (#450)

* Add saddle v2 pools

* remove outdated pools

* add two saddle meta pools

* forgot changelog

* remove saddle metapools

* changelog update

* Fix a lint issue (#475)

* Updated CHANGELOGS & MD docs

* Publish

 - @0x/asset-swapper@16.59.0

* Add BiSwap (as UniV2 clone) on BSC

* rebase new changes for balv2, up changelog, quotes working

* remove Biswap from transformer_utils once again

Co-authored-by: Kyu <kyuhyun217@gmail.com>
Co-authored-by: Github Actions <github-actions@github.com>
Co-authored-by: phil-ociraptor <phil@0x.org>
Co-authored-by: Cece Z <me@cecez.xyz>
Co-authored-by: Noah Khamliche <noah@0xproject.com>

.circleci/config.yml

@@ -4,12 +4,13 @@ jobs:
     build:
         resource_class: xlarge
         docker:
-            - image: node:12
+            - image: node:16
         environment:
             NODE_OPTIONS: '--max-old-space-size=16384'
         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
@@ -19,7 +20,6 @@ jobs:
                   command: yarn --frozen-lockfile --ignore-engines install || yarn --frozen-lockfile --ignore-engines install
             - setup_remote_docker
             - run: yarn build:ci || yarn build:ci || yarn build:ci || yarn build:ci || yarn build:ci || yarn build:ci
-            - run: yarn build:ts || yarn build:ts || yarn build:ts || yarn build:ts || yarn build:ts || yarn build:ts
             - save_cache:
                   key: repo-{{ .Environment.CIRCLE_SHA1 }}
                   paths:
@@ -31,7 +31,7 @@ jobs:
     test-exchange-ganache:
         resource_class: medium+
         docker:
-            - image: node:12
+            - image: node:16
         working_directory: ~/repo
         steps:
             - restore_cache:
@@ -41,7 +41,7 @@ jobs:
     test-integrations-ganache:
         resource_class: medium+
         docker:
-            - image: node:12
+            - image: node:16
         working_directory: ~/repo
         steps:
             - restore_cache:
@@ -51,7 +51,7 @@ jobs:
     test-contracts-staking-ganache:
         resource_class: medium+
         docker:
-            - image: node:12
+            - image: node:16
         working_directory: ~/repo
         steps:
             - restore_cache:
@@ -61,7 +61,7 @@ jobs:
     test-contracts-extra-ganache:
         resource_class: medium+
         docker:
-            - image: node:12
+            - image: node:16
         working_directory: ~/repo
         steps:
             - restore_cache:
@@ -71,7 +71,7 @@ jobs:
     test-contracts-rest-ganache:
         resource_class: medium+
         docker:
-            - image: node:12
+            - image: node:16
         working_directory: ~/repo
         steps:
             - restore_cache:
@@ -83,7 +83,7 @@ jobs:
         environment:
             NODE_OPTIONS: '--max-old-space-size=6442'
         docker:
-            - image: node:12
+            - image: node:16
             - image: 0xorg/verdaccio
         working_directory: ~/repo
         steps:
@@ -97,7 +97,7 @@ jobs:
                   path: ~/.npm/_logs
     test-doc-generation:
         docker:
-            - image: node:12
+            - image: node:16
         working_directory: ~/repo
         steps:
             - restore_cache:
@@ -108,8 +108,10 @@ jobs:
                   no_output_timeout: 1200
     test-rest:
         docker:
-            - image: node:12
+            - image: node:16
         working_directory: ~/repo
+        environment:
+            RUST_ROUTER: "true"
         steps:
             - restore_cache:
                   keys:
@@ -136,7 +138,7 @@ jobs:
         resource_class: large
         working_directory: ~/repo
         docker:
-            - image: node:12
+            - image: node:16
         steps:
             - restore_cache:
                   keys:
@@ -147,7 +149,7 @@ jobs:
             - run: yarn diff_md_docs:ci
     submit-coverage:
         docker:
-            - image: node:12
+            - image: node:16
         working_directory: ~/repo
         steps:
             - restore_cache:

.github/workflows/publish.yml

@@ -28,7 +28,7 @@ jobs:
                 fetch-depth: 0
             - uses: actions/setup-node@v1
               with:
-                node-version: 10
+                node-version: 16
             - uses: actions/setup-python@v2
             - name: 'configure git'
               run: |

.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 +1,3 @@
+[submodule "contracts/zero-ex/contracts/deps/forge-std"]
+	path = contracts/zero-ex/contracts/deps/forge-std
+	url = https://github.com/foundry-rs/forge-std

contracts/erc20/CHANGELOG.json

@@ -1,4 +1,31 @@
 [
+    {
+        "timestamp": 1650611093,
+        "version": "3.3.29",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1648739346,
+        "version": "3.3.28",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1646225739,
+        "version": "3.3.27",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1645569128,
         "version": "3.3.26",

contracts/erc20/CHANGELOG.md

@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.3.29 - _April 22, 2022_
+
+    * Dependencies updated
+
+## v3.3.28 - _March 31, 2022_
+
+    * Dependencies updated
+
+## v3.3.27 - _March 2, 2022_
+
+    * Dependencies updated
+
 ## v3.3.26 - _February 22, 2022_
 
     * Dependencies updated

contracts/erc20/contracts/src/v06/WETH9.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 ^0.6.5;
+
+
+contract WETH9 {
+    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
+
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+                     END OF TERMS AND CONDITIONS
+
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+
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+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+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.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
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+    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/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
+*/

contracts/erc20/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc20",
-    "version": "3.3.26",
+    "version": "3.3.29",
     "engines": {
         "node": ">=6.12"
     },
@@ -51,18 +51,18 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/tokens",
     "devDependencies": {
-        "@0x/abi-gen": "^5.7.2",
-        "@0x/contracts-gen": "^2.0.43",
-        "@0x/contracts-test-utils": "^5.4.17",
-        "@0x/contracts-utils": "^4.8.7",
-        "@0x/dev-utils": "^4.2.11",
-        "@0x/sol-compiler": "^4.7.8",
+        "@0x/abi-gen": "^5.8.0",
+        "@0x/contracts-gen": "^2.0.46",
+        "@0x/contracts-test-utils": "^5.4.20",
+        "@0x/contracts-utils": "^4.8.10",
+        "@0x/dev-utils": "^4.2.14",
+        "@0x/sol-compiler": "^4.8.1",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.4",
-        "@0x/types": "^3.3.4",
-        "@0x/typescript-typings": "^5.2.1",
-        "@0x/utils": "^6.5.0",
-        "@0x/web3-wrapper": "^7.6.2",
+        "@0x/types": "^3.3.6",
+        "@0x/typescript-typings": "^5.3.1",
+        "@0x/utils": "^6.5.3",
+        "@0x/web3-wrapper": "^7.6.5",
         "@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": "^3.6.0",
+        "ethereum-types": "^3.7.0",
         "lodash": "^4.17.11",
         "make-promises-safe": "^1.1.0",
         "mocha": "^6.2.0",
@@ -79,10 +79,10 @@
         "solhint": "^1.4.1",
         "tslint": "5.11.0",
         "typedoc": "~0.16.11",
-        "typescript": "4.2.2"
+        "typescript": "4.6.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.4.5",
+        "@0x/base-contract": "^6.5.0",
         "ethers": "~4.0.4"
     },
     "publishConfig": {

contracts/test-utils/CHANGELOG.json

@@ -1,4 +1,31 @@
 [
+    {
+        "timestamp": 1650611093,
+        "version": "5.4.20",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1648739346,
+        "version": "5.4.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1646225739,
+        "version": "5.4.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1645569128,
         "version": "5.4.17",

contracts/test-utils/CHANGELOG.md

@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v5.4.20 - _April 22, 2022_
+
+    * Dependencies updated
+
+## v5.4.19 - _March 31, 2022_
+
+    * Dependencies updated
+
+## v5.4.18 - _March 2, 2022_
+
+    * Dependencies updated
+
 ## v5.4.17 - _February 22, 2022_
 
     * Dependencies updated

contracts/test-utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-test-utils",
-    "version": "5.4.17",
+    "version": "5.4.20",
     "engines": {
         "node": ">=6.12"
     },
@@ -34,28 +34,28 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/test-utils",
     "devDependencies": {
-        "@0x/sol-compiler": "^4.7.8",
+        "@0x/sol-compiler": "^4.8.1",
         "@0x/tslint-config": "^4.1.4",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
         "tslint": "5.11.0",
-        "typescript": "4.2.2"
+        "typescript": "4.6.3"
     },
     "dependencies": {
-        "@0x/assert": "^3.0.31",
-        "@0x/base-contract": "^6.4.5",
-        "@0x/contract-addresses": "^6.11.0",
-        "@0x/dev-utils": "^4.2.11",
-        "@0x/json-schemas": "^6.4.1",
+        "@0x/assert": "^3.0.34",
+        "@0x/base-contract": "^6.5.0",
+        "@0x/contract-addresses": "^6.13.0",
+        "@0x/dev-utils": "^4.2.14",
+        "@0x/json-schemas": "^6.4.4",
         "@0x/order-utils": "^10.4.28",
-        "@0x/sol-coverage": "^4.0.42",
-        "@0x/sol-profiler": "^4.1.32",
-        "@0x/sol-trace": "^3.0.42",
-        "@0x/subproviders": "^6.6.2",
-        "@0x/types": "^3.3.4",
-        "@0x/typescript-typings": "^5.2.1",
-        "@0x/utils": "^6.5.0",
-        "@0x/web3-wrapper": "^7.6.2",
+        "@0x/sol-coverage": "^4.0.45",
+        "@0x/sol-profiler": "^4.1.35",
+        "@0x/sol-trace": "^3.0.45",
+        "@0x/subproviders": "^6.6.5",
+        "@0x/types": "^3.3.6",
+        "@0x/typescript-typings": "^5.3.1",
+        "@0x/utils": "^6.5.3",
+        "@0x/web3-wrapper": "^7.6.5",
         "@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": "^3.6.0",
+        "ethereum-types": "^3.7.0",
         "ethereumjs-util": "^7.0.10",
         "ethers": "~4.0.4",
         "js-combinatorics": "^0.5.3",

contracts/treasury/CHANGELOG.json

@@ -1,4 +1,31 @@
 [
+    {
+        "timestamp": 1650611093,
+        "version": "1.4.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1648739346,
+        "version": "1.4.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1646225739,
+        "version": "1.4.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1645569128,
         "version": "1.4.9",

contracts/treasury/CHANGELOG.md

@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.4.12 - _April 22, 2022_
+
+    * Dependencies updated
+
+## v1.4.11 - _March 31, 2022_
+
+    * Dependencies updated
+
+## v1.4.10 - _March 2, 2022_
+
+    * Dependencies updated
+
 ## v1.4.9 - _February 22, 2022_
 
     * Dependencies updated

contracts/treasury/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-treasury",
-    "version": "1.4.9",
+    "version": "1.4.12",
     "engines": {
         "node": ">=6.12"
     },
@@ -46,14 +46,14 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/treasury",
     "devDependencies": {
-        "@0x/abi-gen": "^5.7.2",
-        "@0x/contract-addresses": "^6.11.0",
+        "@0x/abi-gen": "^5.8.0",
+        "@0x/contract-addresses": "^6.13.0",
         "@0x/contracts-asset-proxy": "^3.7.19",
-        "@0x/contracts-erc20": "^3.3.26",
-        "@0x/contracts-gen": "^2.0.43",
+        "@0x/contracts-erc20": "^3.3.29",
+        "@0x/contracts-gen": "^2.0.46",
         "@0x/contracts-staking": "^2.0.45",
-        "@0x/contracts-test-utils": "^5.4.17",
-        "@0x/sol-compiler": "^4.7.8",
+        "@0x/contracts-test-utils": "^5.4.20",
+        "@0x/sol-compiler": "^4.8.1",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.4",
         "@types/isomorphic-fetch": "^0.0.35",
@@ -69,17 +69,17 @@
         "solhint": "^1.4.1",
         "tslint": "5.11.0",
         "typedoc": "~0.16.11",
-        "typescript": "4.2.2"
+        "typescript": "4.6.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.4.5",
-        "@0x/protocol-utils": "^1.11.0",
-        "@0x/subproviders": "^6.6.2",
-        "@0x/types": "^3.3.4",
-        "@0x/typescript-typings": "^5.2.1",
-        "@0x/utils": "^6.5.0",
-        "@0x/web3-wrapper": "^7.6.2",
-        "ethereum-types": "^3.6.0",
+        "@0x/base-contract": "^6.5.0",
+        "@0x/protocol-utils": "^11.12.0",
+        "@0x/subproviders": "^6.6.5",
+        "@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",
         "ethereumjs-util": "^7.0.10"
     },
     "publishConfig": {

contracts/utils/CHANGELOG.json

@@ -1,4 +1,31 @@
 [
+    {
+        "timestamp": 1650611093,
+        "version": "4.8.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1648739346,
+        "version": "4.8.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1646225739,
+        "version": "4.8.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1645569128,
         "version": "4.8.7",

contracts/utils/CHANGELOG.md

@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.8.10 - _April 22, 2022_
+
+    * Dependencies updated
+
+## v4.8.9 - _March 31, 2022_
+
+    * Dependencies updated
+
+## v4.8.8 - _March 2, 2022_
+
+    * Dependencies updated
+
 ## v4.8.7 - _February 22, 2022_
 
     * Dependencies updated

contracts/utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-utils",
-    "version": "4.8.7",
+    "version": "4.8.10",
     "engines": {
         "node": ">=6.12"
     },
@@ -50,15 +50,15 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/utils",
     "devDependencies": {
-        "@0x/abi-gen": "^5.7.2",
-        "@0x/contracts-gen": "^2.0.43",
-        "@0x/contracts-test-utils": "^5.4.17",
-        "@0x/dev-utils": "^4.2.11",
+        "@0x/abi-gen": "^5.8.0",
+        "@0x/contracts-gen": "^2.0.46",
+        "@0x/contracts-test-utils": "^5.4.20",
+        "@0x/dev-utils": "^4.2.14",
         "@0x/order-utils": "^10.4.28",
-        "@0x/sol-compiler": "^4.7.8",
+        "@0x/sol-compiler": "^4.8.1",
         "@0x/tslint-config": "^4.1.4",
-        "@0x/types": "^3.3.4",
-        "@0x/web3-wrapper": "^7.6.2",
+        "@0x/types": "^3.3.6",
+        "@0x/web3-wrapper": "^7.6.5",
         "@types/bn.js": "^4.11.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
@@ -76,14 +76,14 @@
         "solhint": "^1.4.1",
         "truffle": "^5.0.32",
         "tslint": "5.11.0",
-        "typescript": "4.2.2"
+        "typescript": "4.6.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.4.5",
-        "@0x/typescript-typings": "^5.2.1",
-        "@0x/utils": "^6.5.0",
+        "@0x/base-contract": "^6.5.0",
+        "@0x/typescript-typings": "^5.3.1",
+        "@0x/utils": "^6.5.3",
         "bn.js": "^4.11.8",
-        "ethereum-types": "^3.6.0"
+        "ethereum-types": "^3.7.0"
     },
     "publishConfig": {
         "access": "public"

contracts/zero-ex/CHANGELOG.json

@@ -1,4 +1,32 @@
 [
+    {
+        "version": "0.32.0",
+        "changes": [
+            {
+                "note": "Add support for `BalancerV2Batch` fills in FQT",
+                "pr": 462
+            }
+        ],
+        "timestamp": 1650611093
+    },
+    {
+        "timestamp": 1648739346,
+        "version": "0.31.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1646225739,
+        "version": "0.31.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "version": "0.31.0",
         "changes": [

contracts/zero-ex/CHANGELOG.md

@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v0.32.0 - _April 22, 2022_
+
+    * Add support for `BalancerV2Batch` fills in FQT (#462)
+
+## v0.31.2 - _March 31, 2022_
+
+    * Dependencies updated
+
+## v0.31.1 - _March 2, 2022_
+
+    * Dependencies updated
+
 ## v0.31.0 - _February 22, 2022_
 
     * Add ERC721OrdersFeature, ERC1155OrdersFeature, and ERC165Feature (#429)

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

@@ -25,6 +25,7 @@ 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/MixinCoFiX.sol";
 import "./mixins/MixinCompound.sol";
@@ -52,6 +53,7 @@ contract BridgeAdapter is
     MixinAaveV2,
     MixinBalancer,
     MixinBalancerV2,
+    MixinBalancerV2Batch,
     MixinBancor,
     MixinCoFiX,
     MixinCompound,
@@ -159,6 +161,11 @@ contract BridgeAdapter is
                 sellAmount,
                 order.bridgeData
             );
+        } else if (protocolId == BridgeProtocols.BALANCERV2BATCH) {
+            boughtAmount = _tradeBalancerV2Batch(
+                sellAmount,
+                order.bridgeData
+            );
         } else if (protocolId == BridgeProtocols.KYBER) {
             boughtAmount = _tradeKyber(
                 sellToken,

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

@@ -27,29 +27,30 @@ library BridgeProtocols {
     // A incrementally increasing, append-only list of protocol IDs.
     // We don't use an enum so solidity doesn't throw when we pass in a
     // new protocol ID that hasn't been rolled up yet.
-    uint128 internal constant UNKNOWN     = 0;
-    uint128 internal constant CURVE       = 1;
-    uint128 internal constant UNISWAPV2   = 2;
-    uint128 internal constant UNISWAP     = 3;
-    uint128 internal constant BALANCER    = 4;
-    uint128 internal constant KYBER       = 5;
-    uint128 internal constant MOONISWAP   = 6;
-    uint128 internal constant MSTABLE     = 7;
-    uint128 internal constant OASIS       = 8;
-    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 NERVE       = 15;
-    uint128 internal constant MAKERPSM    = 16;
-    uint128 internal constant BALANCERV2  = 17;
-    uint128 internal constant UNISWAPV3   = 18;
-    uint128 internal constant KYBERDMM    = 19;
-    uint128 internal constant CURVEV2     = 20;
-    uint128 internal constant LIDO        = 21;
-    uint128 internal constant CLIPPER     = 22; // Not used: Clipper is now using PLP interface
-    uint128 internal constant AAVEV2      = 23;
-    uint128 internal constant COMPOUND    = 24;
+    uint128 internal constant UNKNOWN         = 0;
+    uint128 internal constant CURVE           = 1;
+    uint128 internal constant UNISWAPV2       = 2;
+    uint128 internal constant UNISWAP         = 3;
+    uint128 internal constant BALANCER        = 4;
+    uint128 internal constant KYBER           = 5;
+    uint128 internal constant MOONISWAP       = 6;
+    uint128 internal constant MSTABLE         = 7;
+    uint128 internal constant OASIS           = 8;
+    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 NERVE           = 15;
+    uint128 internal constant MAKERPSM        = 16;
+    uint128 internal constant BALANCERV2      = 17;
+    uint128 internal constant UNISWAPV3       = 18;
+    uint128 internal constant KYBERDMM        = 19;
+    uint128 internal constant CURVEV2         = 20;
+    uint128 internal constant LIDO            = 21;
+    uint128 internal constant CLIPPER         = 22; // Not used: Clipper is now using PLP interface
+    uint128 internal constant AAVEV2          = 23;
+    uint128 internal constant COMPOUND        = 24;
+    uint128 internal constant BALANCERV2BATCH = 25;
 }

contracts/zero-ex/contracts/src/transformers/bridges/mixins/MixinBalancerV2Batch.sol

@@ -0,0 +1,107 @@
+// 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";
+
+
+interface IBalancerV2BatchSwapVault {
+
+    enum SwapKind { GIVEN_IN, GIVEN_OUT }
+
+    struct BatchSwapStep {
+        bytes32 poolId;
+        uint256 assetInIndex;
+        uint256 assetOutIndex;
+        uint256 amount;
+        bytes userData;
+    }
+
+    struct FundManagement {
+        address sender;
+        bool fromInternalBalance;
+        address payable recipient;
+        bool toInternalBalance;
+    }
+
+    function batchSwap(
+        SwapKind kind,
+        BatchSwapStep[] calldata swaps,
+        IERC20TokenV06[] calldata assets,
+        FundManagement calldata funds,
+        int256[] calldata limits,
+        uint256 deadline
+    ) external returns (int256[] memory amounts);
+}
+
+contract MixinBalancerV2Batch {
+
+    using LibERC20TokenV06 for IERC20TokenV06;
+
+    struct BalancerV2BatchBridgeData {
+        IBalancerV2BatchSwapVault vault;
+        IBalancerV2BatchSwapVault.BatchSwapStep[] swapSteps;
+        IERC20TokenV06[] assets;
+    }
+
+    function _tradeBalancerV2Batch(
+        uint256 sellAmount,
+        bytes memory bridgeData
+    )
+        internal
+        returns (uint256 boughtAmount)
+    {
+        // Decode the bridge data.
+        (
+            IBalancerV2BatchSwapVault vault,
+            IBalancerV2BatchSwapVault.BatchSwapStep[] memory swapSteps,
+            address[] memory assets_
+        ) = abi.decode(bridgeData, (IBalancerV2BatchSwapVault, IBalancerV2BatchSwapVault.BatchSwapStep[], address[]));
+        IERC20TokenV06[] memory assets;
+        assembly { assets := assets_ }
+
+        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
+        assets[0].approveIfBelow(address(vault), sellAmount);
+
+        swapSteps[0].amount = sellAmount;
+        int256[] memory limits = new int256[](assets.length);
+        for (uint256 i = 0; i < limits.length; ++i) {
+            limits[i] = type(int256).max;
+        }
+
+        int256[] memory amounts = vault.batchSwap(
+            IBalancerV2BatchSwapVault.SwapKind.GIVEN_IN,
+            swapSteps,
+            assets,
+            IBalancerV2BatchSwapVault.FundManagement({
+                sender: address(this),
+                fromInternalBalance: false,
+                recipient: payable(address(this)),
+                toInternalBalance: false
+            }),
+            limits,
+            block.timestamp + 1
+        );
+        require(amounts[amounts.length - 1] <= 0, 'Unexpected BalancerV2Batch output');
+        return uint256(amounts[amounts.length - 1] * -1);
+    }
+}

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

@@ -0,0 +1,30 @@
+// 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;
+
+import "forge-std/Test.sol";
+
+contract ContractTest is Test {
+    function setUp() public {}
+
+    function testExample() public {
+      assertTrue(true);
+    }
+}

contracts/zero-ex/contracts/test/foundry/protocol-academy/1-architecture/Architecture.t.sol

@@ -0,0 +1,66 @@
+// 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 "src/features/OtcOrdersFeature.sol";
+import "src/features/TransformERC20Feature.sol";
+import "src/features/UniswapFeature.sol";
+import "src/features/UniswapV3Feature.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+import "../utils/DeployZeroEx.sol";
+
+contract Architecture is DeployZeroEx {
+
+    function testFeatureDeployment()
+        public
+    {
+        deployZeroEx();
+        // If we look up the address of the Uniswap Implementation, it will be empty
+        // as it hasn't yet been registered.
+        emit log_named_address("sellToUniswap implementation", ZERO_EX.getFunctionImplementation(UniswapFeature.sellToUniswap.selector));
+        // Try registering the implementation
+        // Technically the constructor argument is the WETH address, which doesn't yet exist in this environment
+        UniswapFeature uniswapFeature = new UniswapFeature(IEtherTokenV06(address(0)));
+        emit log_named_address("UniswapFeature deployed at", address(uniswapFeature));
+        // As part of the migration, the UniswapFeature registers its own selectors
+        IZERO_EX.migrate(address(uniswapFeature), abi.encodePacked(uniswapFeature.migrate.selector), address(this));
+        // You will observe in the logs the following events
+        //  ├─ emit ProxyFunctionUpdated(selector: 0xd9627aa4, oldImpl: 0x0000000000000000000000000000000000000000, newImpl: UniswapFeature: [0xf5a2fe45f4f1308502b1c136b9ef8af136141382])
+        // sellToUniswap(address[],uint256,uint256,bool) = 0xd9627aa4
+        // cast keccak 'sellToUniswap(address[],uint256,uint256,bool)'
+        // > 0xd9627aa4...
+        emit log_named_address("sellToUniswap implementation", ZERO_EX.getFunctionImplementation(UniswapFeature.sellToUniswap.selector));
+        // From now on it will be possible to call 0xEP.sellToUniswap which will be registered.
+
+        // Try deploying another Feature such as
+
+        // OtcOrdersFeature
+        // ...
+        emit log_named_address("fillOtcOrder implementation", ZERO_EX.getFunctionImplementation(OtcOrdersFeature.fillOtcOrder.selector));
+
+        // UniswapV3Feature
+        // ...
+        emit log_named_address("sellTokenForTokenToUniswapV3 implementation", ZERO_EX.getFunctionImplementation(UniswapV3Feature.sellTokenForTokenToUniswapV3.selector));
+
+        // Or for extra credit, the TransformERC20Feature
+        emit log_named_address("transformERC20 implementation", ZERO_EX.getFunctionImplementation(TransformERC20Feature.transformERC20.selector));
+    }
+}

contracts/zero-ex/contracts/test/foundry/protocol-academy/1-architecture/DelegateCall.t.sol

@@ -0,0 +1,97 @@
+
+// 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";
+
+interface LanguageContract {
+    function hello()
+        external
+        returns (address, string memory);
+}
+
+contract ContractA is LanguageContract {
+    function hello()
+        public
+        override
+        returns (address, string memory)
+    {
+        return (address(this), "Why hello there!");
+    }
+}
+
+contract ContractB is LanguageContract {
+    function hello()
+        public
+        override
+        returns (address, string memory)
+    {
+        return (address(this), "Protocol Academy was here");
+    }
+}
+
+contract DelegateCaller {
+    function delegateCall(address impl)
+        public
+        returns (address addr, string memory str)
+    {
+        (bool success, bytes memory resultData) = impl.delegatecall(abi.encodePacked(LanguageContract.hello.selector));
+        (addr, str) = abi.decode(resultData, (address, string));
+    }
+}
+
+contract DelegateCall is Test {
+    LanguageContract A;
+    LanguageContract B;
+    DelegateCaller caller;
+
+    function setUp()
+      public
+    {
+        A = new ContractA();
+        B = new ContractB();
+        caller = new DelegateCaller();
+    }
+
+
+    function testDelegateCall()
+        public
+        returns (uint256 val)
+    {
+        // ← DelegateCaller: [0xefc56627233b02ea95bae7e19f648d7dcd5bb132], "Why hello there!"
+        caller.delegateCall(address(A));
+
+        // ← DelegateCaller: [0xefc56627233b02ea95bae7e19f648d7dcd5bb132], "Protocol Academy was here"
+        caller.delegateCall(address(B));
+
+        // Note how in the above results the context is always the DelegateCaller context
+        // with address 0xefc56627233b02ea95bae7e19f648d7dcd5bb132
+
+        // ← ContractA: [0xce71065d4017f316ec606fe4422e11eb2c47c246], "Why hello there!"
+        A.hello();
+
+        // ← ContractB: [0x185a4dc360ce69bdccee33b3784b0282f7961aea], "Protocol Academy was here"
+        B.hello();
+
+        // Note how in the above results the context is each individual contract
+    }
+}

contracts/zero-ex/contracts/test/foundry/protocol-academy/1-architecture/OpcodeCosts.t.sol

@@ -0,0 +1,75 @@
+// 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/OtcOrdersFeature.sol";
+import "src/features/OwnableFeature.sol";
+import "src/features/SimpleFunctionRegistryFeature.sol";
+import "src/features/TransformERC20Feature.sol";
+import "src/features/UniswapFeature.sol";
+import "src/features/UniswapV3Feature.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IEtherTokenV06.sol";
+
+contract StorageContract {
+    uint256 public storedValue = 0;
+
+    function increase()
+        public
+        returns (uint256)
+    {
+        storedValue++;
+        return storedValue;
+    }
+}
+
+contract OpcodeCosts is Test {
+
+    uint256 public storedValue = 0;
+    StorageContract store;
+
+    function setUp()
+      public
+    {
+        store = new StorageContract();
+    }
+
+
+    function testLoadFromStorage()
+        public
+        returns (uint256 val)
+    {
+        // [2306] StorageContract::storedValue() [staticcall]
+        val = store.storedValue();
+    }
+
+    function testLoadAndStore()
+        public
+        returns (uint256 val)
+    {
+        // [22346] StorageContract::increase()
+        val = store.increase();
+    }
+}

contracts/zero-ex/contracts/test/foundry/protocol-academy/2-features/DeployedFeatures.t.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 "forge-std/Test.sol";
+
+import "src/IZeroEx.sol";
+import "src/ZeroEx.sol";
+import "src/features/interfaces/IFeature.sol";
+import "src/features/TransformERC20Feature.sol";
+import "../utils/TestUtils.sol";
+
+
+// TODO: Try running this test on various networks
+//       forge test --match-contract DeployedFeatures --fork-url <rpc_url> -vvv
+contract DeployedFeatures is TestUtils {
+    ZeroEx public ZERO_EX = ZeroEx(0xDef1C0ded9bec7F1a1670819833240f027b25EfF);
+    IZeroEx public IZERO_EX = IZeroEx(0xDef1C0ded9bec7F1a1670819833240f027b25EfF);
+
+    function testLookupFunction()
+        public
+    {
+        uint256 chainId;
+        assembly { chainId := chainid() }
+        // Skip if not in forking mode
+        if (chainId == 31337) {
+            emit log_string("Not in forking mode; skipping test");
+            return;
+        }
+
+        // TODO: try swapping out this selector
+        bytes4 selector = TransformERC20Feature.transformERC20.selector;
+        address impl = ZERO_EX.getFunctionImplementation(selector);
+        if (impl == address(0)) {
+            emit log_named_address("v0.0.0", impl);
+        } else {
+            uint256 version = IFeature(impl).FEATURE_VERSION();
+            // NOTE: we used to have a bug where the version was 
+            //       being incorrectly encoded as 0 lol
+            emit log_named_address(_versionString(version), impl);
+        }
+
+        uint256 rollbackLength = IZERO_EX.getRollbackLength(selector);
+        if (rollbackLength > 1) {
+            for (uint256 i = rollbackLength - 1; i > 0; i--) {
+                address prevImpl = IZERO_EX.getRollbackEntryAtIndex(selector, i);
+                if (prevImpl == address(0)) {
+                    emit log_named_address("v0.0.0", prevImpl);
+                } else {
+                    uint256 version = IFeature(prevImpl).FEATURE_VERSION();
+                    emit log_named_address(_versionString(version), prevImpl);
+                }
+            }
+        }
+    }
+
+    function _versionString(uint256 encodedVersion) 
+        private 
+        pure 
+        returns (string memory versionString)
+    {
+        uint32 major = uint32(encodedVersion >> 64);
+        uint32 minor = uint32(encodedVersion >> 32);
+        uint32 revision = uint32(encodedVersion);
+
+        return string(abi.encodePacked(
+            "v",
+            _toString(uint256(major)),
+            ".",
+            _toString(uint256(minor)),
+            ".",
+            _toString(uint256(revision))
+        ));
+    }
+}

contracts/zero-ex/contracts/test/foundry/protocol-academy/2-features/FeatureStorage.t.sol

@@ -0,0 +1,132 @@
+// 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 "src/fixins/FixinCommon.sol";
+import "src/migrations/LibMigrate.sol";
+import "../utils/DeployZeroEx.sol";
+
+contract FibonacciFeature is FixinCommon {
+    uint256 private prevFib;
+    uint256 private fib;
+
+    function migrate()
+        external
+        returns (bytes4 success)
+    {
+        _registerFeatureFunction(this.stepFibonacci.selector);
+        _registerFeatureFunction(this.currentFibonacci.selector);
+        return LibMigrate.MIGRATE_SUCCESS;
+    }
+
+    function stepFibonacci() external {
+        if (prevFib == 0 && fib == 0) {
+            fib = 1;
+            return;
+        } else {
+            uint256 nextFib = prevFib + fib;
+            prevFib = fib;
+            fib = nextFib;
+        }
+    }
+
+    function currentFibonacci() external view returns (uint256) {
+        return fib;
+    }
+}
+
+contract VoteFeature is FixinCommon {
+    uint256 private good;
+    uint256 private bad;
+    mapping (address => bool) hasVoted;
+
+    function migrate()
+        external
+        returns (bytes4 success)
+    {
+        _registerFeatureFunction(this.pineappleOnPizzaIsGood.selector);
+        _registerFeatureFunction(this.pineappleOnPizzaIsBad.selector);
+        _registerFeatureFunction(this.currentVotes.selector);
+        return LibMigrate.MIGRATE_SUCCESS;
+    }
+
+    function pineappleOnPizzaIsGood() external {
+        require(!hasVoted[msg.sender]);
+        hasVoted[msg.sender] = true;
+        good++;
+    }
+
+    function pineappleOnPizzaIsBad() external {
+        require(!hasVoted[msg.sender]);
+        hasVoted[msg.sender] = true;
+        bad++;
+    }
+
+    function currentVotes() external view returns (uint256, uint256) {
+        return (good, bad);
+    }
+}
+
+contract FeatureStorage is DeployZeroEx {
+
+    function setUp() public {
+        deployZeroEx();
+        FibonacciFeature fibonacciFeature = new FibonacciFeature();
+        emit log_named_address("FibonacciFeature deployed at", address(fibonacciFeature));
+        IZERO_EX.migrate(address(fibonacciFeature), abi.encodePacked(fibonacciFeature.migrate.selector), address(this));
+        emit log_named_address("stepFibonacci implementation", ZERO_EX.getFunctionImplementation(FibonacciFeature.stepFibonacci.selector));        
+        
+        VoteFeature voteFeature = new VoteFeature();
+        emit log_named_address("VoteFeature deployed at", address(voteFeature));
+        IZERO_EX.migrate(address(voteFeature), abi.encodePacked(voteFeature.migrate.selector), address(this));
+    }
+
+    function testFeatureStorage()
+        public
+    {   
+        for (uint256 i = 0; i < 10; i++) {
+            emit log_named_uint("fib", FibonacciFeature(address(ZERO_EX)).currentFibonacci());
+            FibonacciFeature(address(ZERO_EX)).stepFibonacci();
+        }
+
+        for (uint256 i = 0; i < 10; i++) {
+            address voter = _pseudoRandomAddress(i);
+            bool likesPineappleOnPizza = (uint160(voter) % 2) == 1;
+            hoax(voter);
+            likesPineappleOnPizza 
+                ? VoteFeature(address(ZERO_EX)).pineappleOnPizzaIsGood() 
+                : VoteFeature(address(ZERO_EX)).pineappleOnPizzaIsBad();
+        }
+        (uint256 good, uint256 bad) = VoteFeature(address(ZERO_EX)).currentVotes();
+        
+        emit log_named_uint("good votes", good);
+        emit log_named_uint("bad votes", bad);
+        emit log_named_uint("fib", FibonacciFeature(address(ZERO_EX)).currentFibonacci());
+
+        // TODO: Fix the Fibonacci and Vote features so that their respective storage 
+        //       variables do not collide. Create LibFibonacciStorage and LibVoteStorage
+        //       to do so. 
+    }
+
+    function _pseudoRandomAddress(uint256 seed) private pure returns (address) {
+        return address(uint160(uint256(keccak256(abi.encodePacked(seed)))));
+    }
+}

contracts/zero-ex/contracts/test/foundry/protocol-academy/2-features/Migration.t.sol

@@ -0,0 +1,155 @@
+// 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 "src/fixins/FixinCommon.sol";
+import "src/migrations/LibMigrate.sol";
+import "../utils/DeployZeroEx.sol";
+
+contract ZooFeature is FixinCommon {
+    event Meow();
+    event Woof();
+    event SlothNoises();
+
+    function migrate()
+        external
+        returns (bytes4 success)
+    {
+        _registerFeatureFunction(this.cat.selector);
+        _registerFeatureFunction(this.dog.selector);
+        _registerFeatureFunction(this.sloth.selector);
+        return LibMigrate.MIGRATE_SUCCESS;
+    }
+
+    function cat() external {
+        emit Meow();
+    }
+    function dog() external {
+        emit Woof();
+    }
+    function sloth() external {
+        emit SlothNoises();
+    }
+}
+
+contract ZooFeatureV2 is FixinCommon {
+    event Meow();
+    event Purr();
+    event Woof();
+    event CapybaraNoises();
+
+    function migrate()
+        external
+        returns (bytes4 success)
+    {
+        _registerFeatureFunction(this.cat.selector);
+        _registerFeatureFunction(this.dog.selector);
+        _registerFeatureFunction(this.capybara.selector);
+        return LibMigrate.MIGRATE_SUCCESS;
+    }
+
+    // NOTE: the function signature for `cat` has changed, so the selectors are different!
+    function cat(bool happy) external {
+        if (happy) {
+            emit Purr();
+        } else {
+            emit Meow();
+        }
+    }
+    // dog is the same
+    function dog() external {
+        emit Woof();
+    }
+    // new!
+    function capybara() external {
+        emit CapybaraNoises();
+    }
+    // sloth is not in V2
+}
+
+contract Migration is DeployZeroEx {
+
+    function setUp() public {
+        deployZeroEx();
+    }
+
+    function testMigration()
+        public
+    {
+        ZooFeature zooFeature = new ZooFeature();
+        IZERO_EX.migrate(address(zooFeature), abi.encodePacked(zooFeature.migrate.selector), address(this));
+
+        // The functions in ZooFeature are now registered in the exchange proxy!
+        // Try them out.
+        ZooFeature(address(ZERO_EX)).dog();
+        ZooFeature(address(ZERO_EX)).cat();
+        ZooFeature(address(ZERO_EX)).sloth();
+    }
+
+    function testUpgrade()
+        public
+    {
+        // Original version
+        ZooFeature zooFeature = new ZooFeature();
+        IZERO_EX.migrate(address(zooFeature), abi.encodePacked(zooFeature.migrate.selector), address(this));
+        // Upgrade
+        ZooFeatureV2 zooFeatureV2 = new ZooFeatureV2();
+        IZERO_EX.migrate(address(zooFeatureV2), abi.encodePacked(zooFeatureV2.migrate.selector), address(this));
+
+        // The functions in ZooFeatureV2 are now registered in the exchange proxy!
+        // Try them out.
+        ZooFeatureV2(address(ZERO_EX)).dog();
+        ZooFeatureV2(address(ZERO_EX)).cat(true);
+        ZooFeatureV2(address(ZERO_EX)).cat(false);
+        ZooFeatureV2(address(ZERO_EX)).capybara();
+
+        // `sloth` is still registered
+        ZooFeature(address(ZERO_EX)).sloth();
+        // The old `cat` function is still registered, since it has a different selector
+        emit log_named_bytes('cat()', abi.encodePacked(zooFeature.cat.selector));
+        emit log_named_bytes('cat(bool)', abi.encodePacked(zooFeatureV2.cat.selector));
+        ZooFeature(address(ZERO_EX)).cat();
+
+        // Let's deregister the sloth and old cat functions
+        IZERO_EX.rollback(zooFeature.cat.selector, address(0));
+        IZERO_EX.rollback(zooFeature.sloth.selector, address(0));
+
+        // Now trying to call the old cat or sloth reverts
+        try ZooFeature(address(ZERO_EX)).cat() {} 
+        catch (bytes memory e) {
+            emit log_string("cat() reverted");
+        }
+        try ZooFeature(address(ZERO_EX)).sloth() {}
+        catch (bytes memory e) {
+            emit log_string("sloth() reverted");
+        }
+
+        // dog() was upgraded, so it's v1 address is in the `implHistory`
+        emit log_named_uint(
+            "dog() rollback length", 
+            IZERO_EX.getRollbackLength(zooFeature.dog.selector)
+        );
+        emit log_named_address(
+            "dog() v1 is in the history", 
+            IZERO_EX.getRollbackEntryAtIndex(zooFeature.dog.selector, 1)
+        );
+    }
+}

contracts/zero-ex/contracts/test/foundry/protocol-academy/3-transformers/BasicSwapForked.t.sol

@@ -0,0 +1,152 @@
+// 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 "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/BridgeAdapter.sol";
+
+/*
+    This test must be run in forked mode
+    e.g forge test -vvvv -m 'testBasicSwap' -f ETH_RPC_URL
+    It is also helpful to have an Etherscan API key exported
+    export ETHERSCAN_API_KEY=
+    as Foundry will fetch source code and names
+*/
+
+contract BasicSwapForkedTest is
+    ForkUtils,
+    TestUtils
+{
+    IZeroEx public IZERO_EX = IZeroEx(0xDef1C0ded9bec7F1a1670819833240f027b25EfF);
+    IEtherTokenV06 WETH = IEtherTokenV06(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2);
+
+    // These addresses are taken from contract-addresses for Ethereum Mainnet
+    TransformerDeployer transformerDeployer = TransformerDeployer(0x39dCe47a67aD34344EAB877eaE3Ef1FA2a1d50Bb);
+    WethTransformer wethTransformer = WethTransformer(0xb2bc06a4EfB20FC6553a69Dbfa49B7bE938034A7);
+    // Note this may be outdated as it is often updated
+    FillQuoteTransformer fillQuoteTransformer = FillQuoteTransformer(0xADBE39F2988A8Be1C1120F05e28CC888b150c8a6);
+
+    function setUp()
+        public
+        onlyForked()
+    {
+        // HACK we deploy some fake transformers just so Foundry
+        // can detect these contracts for decoding
+        new WethTransformer(IEtherTokenV06(address(0)));
+        vm.label(address(wethTransformer), "WethTransformer");
+        new FillQuoteTransformer(IBridgeAdapter(address(0)), INativeOrdersFeature(address(0)));
+        vm.label(address(fillQuoteTransformer), "FillQuoteTransformer");
+        new BridgeAdapter(IEtherTokenV06(address(0)));
+        vm.label(address(fillQuoteTransformer.bridgeAdapter()), "BridgeAdapter");
+        vm.label(address(IZERO_EX.getTransformWallet()), "FlashWallet");
+    }
+
+    function testBasicSwap()
+        public
+        onlyForked()
+    {
+        IERC20TokenV06 USDC = IERC20TokenV06(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48);
+        // Create our list of transformations, let's do WethTransformer and FillQuoteTransformer
+        ITransformERC20Feature.Transformation[] memory transformations = new ITransformERC20Feature.Transformation[](2);
+        // Use our cheeky search helper to find the nonce rather than hardcode it
+        //  hint: it's 6 for WethTransformer and 22 for this FillQuoteTransformer
+        transformations[0].deploymentNonce = _findTransformerNonce(address(wethTransformer), address(transformerDeployer));
+        transformations[1].deploymentNonce = _findTransformerNonce(address(fillQuoteTransformer), address(transformerDeployer));
+
+        emit log_named_uint("WethTransformer nonce", transformations[0].deploymentNonce);
+        emit log_named_uint("FillQuoteTransformer nonce", transformations[1].deploymentNonce);
+
+        // Set the first transformation to transform ETH into WETH
+        transformations[0].data = abi.encode(LibERC20Transformer.ETH_TOKEN_ADDRESS, 1e18);
+
+        // Set up the FillQuoteTransformer data
+        FillQuoteTransformer.TransformData memory fqtData;
+        fqtData.side = FillQuoteTransformer.Side.Sell;
+        // FQT deals with tokens, not ETH, so it needs a WETH transformer
+        // to be applied beforehand
+        fqtData.sellToken = IERC20TokenV06(address(WETH));
+        fqtData.buyToken =  IERC20TokenV06(address(USDC));
+        // the FQT has a sequence, e.g first RFQ then Limit then Bridge
+        // since solidity doesn't support arrays of different types, this is one simple solution
+        // We use a Bridge order type here as we will fill on UniswapV2
+        fqtData.fillSequence = new FillQuoteTransformer.OrderType[](1);
+        fqtData.fillSequence[0] = FillQuoteTransformer.OrderType.Bridge;
+        // The amount to fill
+        fqtData.fillAmount = 1e18;
+        // Now let's set up a UniswapV2 fill
+        fqtData.bridgeOrders = new IBridgeAdapter.BridgeOrder[](1);
+        IBridgeAdapter.BridgeOrder memory order;
+        // The ID is shifted so we can concat <PROTOCOL><NAME>
+        // e.g <UniswapV2Protocol><UniswapV2>
+        // or  <UniswapV2Protocol><SushiSwap> for forks
+        order.source = bytes32(uint256(BridgeProtocols.UNISWAPV2) << 128);
+        // How much we want to fill on this order, which can be different to the total
+        // e.g 50/50 split this would be half
+        order.takerTokenAmount = 1e18;
+        // Set this low as the price of ETH/USDC can change
+        order.makerTokenAmount = 1;
+        // The data needed specifically for the source to fill,
+        // e.g for UniswapV2 it is the router contract and a path. See MixinUniswapV2
+        address[] memory uniPath = new address[](2);
+        uniPath[0] = address(WETH);
+        uniPath[1] = address(USDC);
+        order.bridgeData = abi.encode(address(0xf164fC0Ec4E93095b804a4795bBe1e041497b92a), uniPath);
+        fqtData.bridgeOrders[0] = order;
+        // Now encode the FQT data into the transformation
+        transformations[1].data = abi.encode(fqtData);
+
+
+        // Now let's do it!
+        // Give ourselves 1e18 ETH
+        vm.deal(address(this), 1e18);
+        IZERO_EX.transformERC20{value: 1e18}(
+            // input token
+            IERC20TokenV06(LibERC20Transformer.ETH_TOKEN_ADDRESS),
+            // output token
+            IERC20TokenV06(address(USDC)),
+            // input token amount
+            1e18,
+            // min output token amount, set this low as ETH/USDC price will move
+            1,
+            // list of transform
+            transformations
+        );
+        // Hoollly heck we bought some USDC
+        assertGt(USDC.balanceOf(address(this)), 0);
+        emit log_named_uint("USDC bought", USDC.balanceOf(address(this)));
+
+        /*
+            Homework
+            Try the following:
+            * make this UniswapV2 trade go ETH->DAI->USDC
+            * combine multiple trades, e.g Uniswap V2 ETH->USDC and ETH->DAI->USDC
+            * create a UniswapV3 trade
+        */
+    }
+}

contracts/zero-ex/contracts/test/foundry/protocol-academy/3-transformers/TransformERC20Feature.t.sol

@@ -0,0 +1,191 @@
+// 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/DeployZeroEx.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 "@0x/contracts-erc20/contracts/src/v06/WETH9.sol";
+
+contract TransformERC20FeatureTest is DeployZeroEx {
+    IEtherTokenV06 WETH;
+
+    TransformerDeployer transformerDeployer;
+    WethTransformer wethTransformer;
+    TransformERC20Feature transformERC20Feature;
+
+    function setUp() public {
+        deployZeroEx();
+        // Deploy from bytecode as this is Solidity v5
+        WETH = IEtherTokenV06(deployCode("foundry-artifacts/WETH9.sol/WETH9.json"));
+        emit log_named_address("WETH deployed at", address(WETH));
+    }
+
+    function testMigration()
+        public
+    {
+        // Note there is a lot here, so feel free to comment out further sections
+        // so you can read the logs and traces
+
+        /*
+            Deploy TransformERC20Feature
+        */
+
+        // Create a new TransformerDeployer, which will deploy all future transformers
+        // Owners are typically EOA which are allowed to deploy
+        // For this we will use this current contract address
+        address[] memory owners = new address[](1);
+        owners[0] = address(this);
+        transformerDeployer = new TransformerDeployer(owners);
+        emit log_named_address("TransformerDeployer deployed at", address(transformerDeployer));
+
+
+        transformERC20Feature = new TransformERC20Feature();
+        emit log_named_address("TransformERC20Feature deployed at", address(transformERC20Feature));
+
+        // Migrate 0x EP and initialize the TransformERC20Feature
+        // Remember this performs a delegatecall and registers function selectors
+        //     function migrate(address target, bytes calldata data, address newOwner)
+        IZERO_EX.migrate(
+            address(transformERC20Feature),
+            // Use encodeWithSelector to generate low level call data with the required arguments
+            // <function selector><arg1> 
+            //  The required migration function to call is the following:
+            //     function migrate(address transformerDeployer)
+            //  e.g ce5494bb00000000000000000000000042997ac9251e5bb0a61f4ff790e5b991ea07fd9b
+            //  try: cast calldata 'migrate(address)' '0x42997ac9251e5bb0a61f4ff790e5b991ea07fd9b'
+            abi.encodeWithSelector(transformERC20Feature.migrate.selector, address(transformerDeployer)),
+            address(this)
+        );
+
+        // As part of the migration process a FlashWallet was generated inside of the 0x EP context
+        emit log_named_address("FlashWallet deployed at", address(IZERO_EX.getTransformWallet()));
+        // Homework: Recall why transformERC20Feature.getTransformWallet() returns address(0)
+
+        /*
+            Deploy a WETH transformer
+        */
+
+        // Typically the code to deployed is passed in off-chain, so we will emulate something similar
+        // by using vm.getCode cheatcode.
+        wethTransformer = WethTransformer(transformerDeployer.deploy(
+            abi.encodePacked(
+                // Deploy the WethTransformer code
+                vm.getCode("foundry-artifacts/WethTransformer.sol/WethTransformer.json"),
+                // WethTransformer takes WETH address as a constructor argument
+                abi.encode(address(WETH))
+            )
+        ));
+        assertEq(address(wethTransformer.weth()), address(WETH));
+        emit log_named_address("WethTransformer deployed at", address(IZERO_EX.getTransformWallet()));
+
+        // Not much we can do with just a WethTransformer, I guess we could go ETH->WETH with it
+        // Cheat code to give this contract 1e18 ETH
+        vm.deal(address(this), 1e18);
+        
+        // Deployment nonce is 1 as it is the first contract TransformerDeployer deployed
+        // let's assert that is true
+        assertEq(
+            LibERC20Transformer.getDeployedAddress(address(transformerDeployer), 1),
+            address(wethTransformer)
+        );
+
+        /*
+            Perform a ETH->WETH transformation
+        */
+
+        // Create our list of transformations, this will just have a WethTransformer
+        ITransformERC20Feature.Transformation[] memory transformations = new ITransformERC20Feature.Transformation[](1);
+        transformations[0].deploymentNonce = 1;
+        transformations[0].data = abi.encode(LibERC20Transformer.ETH_TOKEN_ADDRESS, 1e18);
+
+        IZERO_EX.transformERC20{value: 1e18}(
+            // input token
+            IERC20TokenV06(LibERC20Transformer.ETH_TOKEN_ADDRESS),
+            // output token
+            IERC20TokenV06(address(WETH)),
+            // input token amount
+            1e18,
+            // min output token amount
+            1e18,
+            // list of transform
+            transformations
+        );
+        assertEq(WETH.balanceOf(address(this)), 1e18);
+
+        /*
+            Perform a WETH->ETH transformation
+        */
+
+        // Let's go backwards, remember we need to set the approval of WETH to the 0x EP
+        WETH.approve(address(IZERO_EX), uint256(-1));
+        // Override the data in the previous transformation
+        transformations[0].data = abi.encode(address(WETH), 1e18);
+        // Note: No { value } here as it's a token
+        IZERO_EX.transformERC20(
+            // input token
+            IERC20TokenV06(address(WETH)),
+            // output token
+            IERC20TokenV06(LibERC20Transformer.ETH_TOKEN_ADDRESS),
+            // input token amount
+            1e18,
+            // min output token amount
+            1e18,
+            // list of transform
+            transformations
+        );
+
+        /*
+            Deploy FillQuoteTransformer and BridgeAdapter
+        */
+
+        // At this time I would show how to do a ETH->USDC trade
+        // but we need to set up more of the world, or to run in forked mode
+        // with an AMM (find this in BasicSwapForked.t.sol)
+
+        // Instead let's just deploy the FQT and BridgeAdapter and as homework
+        // you might explore running in forked mode and using transformations
+        address bridgeAdapter = deployCode("foundry-artifacts/BridgeAdapter.sol/BridgeAdapter.json", abi.encode(address(WETH)));
+        FillQuoteTransformer fillQuoteTransformer = FillQuoteTransformer(transformerDeployer.deploy(
+            abi.encodePacked(
+                // Deploy the FillQuoteTransformer code
+                vm.getCode("foundry-artifacts/FillQuoteTransformer.sol/FillQuoteTransformer.json"),
+                // FillQuoteTransformer takes the BridgeAdapter and ZeroEx address as arguments
+                abi.encode(bridgeAdapter, address(ZERO_EX))
+            )
+        ));
+        assertEq(address(fillQuoteTransformer.bridgeAdapter()), bridgeAdapter);
+        assertEq(
+            LibERC20Transformer.getDeployedAddress(address(transformerDeployer), 2),
+            address(fillQuoteTransformer)
+        );
+
+    }
+
+    // Note this is needed as the test is a contract, and to receive ETH 
+    // it needs to declare a receive function as per the Solidity requirements
+    receive() external payable {}
+
+}

contracts/zero-ex/contracts/test/foundry/protocol-academy/8-evm/Call.t.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;
+
+contract Receiver {
+  function receivePure() public pure {
+      1 + 1;
+  }
+
+  function receiveImpure() public {
+      1 + 1;
+  }
+}
+
+contract Empty {
+
+}
+
+contract Call {
+    address empty = address(new Empty());
+    address receiver = address(new Receiver());
+
+    function callUnknown() public {
+      // forge debug contracts/test/foundry/protocol-academy/8-evm/Call.t.sol --sig 'callUnknown()' --tc Call
+
+      // Why didn't this contract make a call out to 0x222... ?
+      // Did solidity add a check for us?
+      Receiver(0x2222222222222222222222222222222222222222).receiveImpure();
+    }
+
+    function callEmpty() public {
+      // forge debug contracts/test/foundry/protocol-academy/8-evm/Call.t.sol --sig 'callEmpty()' --tc Call
+
+      // Observe how the added Solidity checks "pass"
+      // and ultimately how this results in a REVERT
+      Receiver(empty).receiveImpure();
+    }
+
+    function callEmptyRaw() public {
+      // forge debug contracts/test/foundry/protocol-academy/8-evm/Call.t.sol --sig 'callEmptyRaw()' --tc Call
+
+      // Observe this low level call and how it differs from the above
+      // example. Does it revert?
+      empty.call(abi.encodeWithSelector(Receiver.receiveImpure.selector));
+    }
+
+    function callEmptyEOA() public {
+      // forge debug contracts/test/foundry/protocol-academy/8-evm/Call.t.sol --sig 'callEmptyEOA()' --tc Call
+
+      // Observe this low level call and how it differs from the above
+      // example. Does it revert?
+      address(msg.sender).call(abi.encodeWithSelector(Receiver.receiveImpure.selector));
+    }
+
+    function callReceiverImpure() public {
+      // forge debug contracts/test/foundry/protocol-academy/8-evm/Call.t.sol --sig 'callReceiverImpure()' --tc Call
+
+      // Observe how a CALL is set up and then ultimately made
+      // and any checks prior to making the CALL
+      Receiver(receiver).receiveImpure();
+    }
+
+    function callReceiverPure() public {
+      // forge debug contracts/test/foundry/protocol-academy/8-evm/Call.t.sol --sig 'callReceiverPure()' --tc Call
+
+      // Did you notice the different CALL type solidity chose here ?
+      Receiver(receiver).receivePure();
+    }
+
+}

contracts/zero-ex/contracts/test/foundry/protocol-academy/8-evm/Counter.t.sol

@@ -0,0 +1,30 @@
+// 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;
+
+contract Counter {
+    uint256 private data = 1337;
+
+    function increment(uint256 val) public {
+      // forge debug contracts/test/foundry/protocol-academy/8-evm/Counter.t.sol --sig 'increment(uint256)' 10
+      data += val;
+    }
+}

contracts/zero-ex/contracts/test/foundry/protocol-academy/8-evm/Hash.t.sol

@@ -0,0 +1,42 @@
+// 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;
+
+contract Hash {
+    bytes data = hex"42";
+
+    function sha3() public {
+        // forge debug contracts/test/foundry/protocol-academy/8-evm/Hash.sol --sig 'sha3()'
+
+        // Follow the opcodes:
+        //   how does the data get loaded
+        //   which one is keccak256
+        keccak256(data);
+    }
+
+    function sha2() public {
+        // forge debug contracts/test/foundry/protocol-academy/8-evm/Hash.sol --sig 'sha2()'
+
+        // Follow the opcodes:
+        //   why is sha256 so different from keccak256
+        sha256(data);
+    }
+}

contracts/zero-ex/contracts/test/foundry/protocol-academy/8-evm/Memory.t.sol

@@ -0,0 +1,45 @@
+// 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;
+
+contract Memory {
+
+    function expand() public {
+      // forge debug contracts/test/foundry/protocol-academy/8-evm/Memory.t.sol --sig 'expand()'
+
+      // Observe the free memory pointer increase
+      // when more memory is allocated
+      bytes32[3] memory data;
+    }
+
+    function mstore() public {
+      // forge debug contracts/test/foundry/protocol-academy/8-evm/Memory.t.sol --sig 'mstore()'
+
+      // Observe the free memory pointer increase
+      // when more memory is allocated
+      bytes1[4] memory data;
+      // Observe each value being set in the memory
+      // slots
+      data[1] = 0x42;
+      data[0] = 0x0a;
+      data[2] = 0xff;
+    }
+}

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

@@ -0,0 +1,70 @@
+// 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";
+
+
+contract DeployZeroEx is Test {
+    ZeroEx public ZERO_EX = ZeroEx(0xDef1C0ded9bec7F1a1670819833240f027b25EfF);
+    IZeroEx public IZERO_EX = IZeroEx(0xDef1C0ded9bec7F1a1670819833240f027b25EfF);
+
+    function deployZeroEx()
+        internal
+    {
+        // 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.
+        InitialMigration initialMigration = InitialMigration(deployCode(
+            "foundry-artifacts/InitialMigration.sol/InitialMigration.json",
+            abi.encode(address(this))
+        ));
+        // Must occur from this address as the first transaction
+        hoax(0xe750ad66DE350F8110E305fb78Ec6A9f594445E3);
+        // Special Deployer code
+        bytes memory deployerBytecode = hex"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";
+        // Grab the bytecode of the ZeroEx artifact
+        bytes memory zeroExBytecode = vm.getCode("foundry-artifacts/ZeroEx.sol/ZeroEx.json");
+        // Append the required ZeroEx constructor arguments (address bootstrapper)
+        bytes memory zeroExDeploycode = abi.encodePacked(zeroExBytecode, abi.encode(initialMigration));
+        // Append the required deployer code constructor arguments (bytes initCode)
+        bytes memory deployerDeploycode = abi.encodePacked(deployerBytecode, abi.encode(zeroExDeploycode));
+        // The address is technically emitted in an event, but we know we did it correctly
+        //│   │   ├─  emit topic 0: 0xf40fcec21964ffb566044d083b4073f29f7f7929110ea19e1b3ebe375d89055e
+        //│   │   │           data: 0x000000000000000000000000def1c0ded9bec7f1a1670819833240f027b25eff
+        assembly {
+            pop(create(0, add(deployerDeploycode, 0x20), mload(deployerDeploycode)))
+        }
+
+        initialMigration.initializeZeroEx(
+            payable(address(this)),
+            ZERO_EX,
+            InitialMigration.BootstrapFeatures({ registry: new SimpleFunctionRegistryFeature(), ownable: new OwnableFeature()})
+        );
+    }
+}

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

@@ -0,0 +1,36 @@
+// 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";
+
+
+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/protocol-academy/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 +1,8 @@
+[default]
+src = 'contracts/src'
+out = 'foundry-artifacts'
+test = 'contracts/test/foundry'
+libs = ["../utils/contracts/src/", "contracts/deps/"]
+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": "0.31.0",
+    "version": "0.32.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -38,12 +38,13 @@
         "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'"
     },
     "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",
         "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|MixinBancor|MixinCoFiX|MixinCompound|MixinCryptoCom|MixinCurve|MixinCurveV2|MixinDodo|MixinDodoV2|MixinKyber|MixinKyberDmm|MixinLido|MixinMStable|MixinMakerPSM|MixinMooniswap|MixinNerve|MixinOasis|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/@(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|MixinKyber|MixinKyberDmm|MixinLido|MixinMStable|MixinMakerPSM|MixinMooniswap|MixinNerve|MixinOasis|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"
     },
     "repository": {
         "type": "git",
@@ -55,16 +56,17 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/zero-ex",
     "devDependencies": {
-        "@0x/abi-gen": "^5.7.2",
-        "@0x/contract-addresses": "^6.11.0",
-        "@0x/contracts-erc20": "^3.3.26",
-        "@0x/contracts-gen": "^2.0.43",
-        "@0x/contracts-test-utils": "^5.4.17",
-        "@0x/dev-utils": "^4.2.11",
+        "@0x/abi-gen": "^5.8.0",
+        "@0x/contract-addresses": "^6.13.0",
+        "@0x/contracts-erc20": "^3.3.29",
+        "@0x/contracts-gen": "^2.0.46",
+        "@0x/contracts-test-utils": "^5.4.20",
+        "@0x/dev-utils": "^4.2.14",
         "@0x/order-utils": "^10.4.28",
-        "@0x/sol-compiler": "^4.7.8",
+        "@0x/sol-compiler": "^4.8.1",
         "@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 +80,19 @@
         "solhint": "^1.4.1",
         "truffle": "^5.0.32",
         "tslint": "5.11.0",
+        "typechain": "^8.0.0",
         "typedoc": "~0.16.11",
-        "typescript": "4.2.2"
+        "typescript": "4.6.3"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.4.5",
-        "@0x/protocol-utils": "^1.11.0",
-        "@0x/subproviders": "^6.6.2",
-        "@0x/types": "^3.3.4",
-        "@0x/typescript-typings": "^5.2.1",
-        "@0x/utils": "^6.5.0",
-        "@0x/web3-wrapper": "^7.6.2",
-        "ethereum-types": "^3.6.0",
+        "@0x/base-contract": "^6.5.0",
+        "@0x/protocol-utils": "^11.12.0",
+        "@0x/subproviders": "^6.6.5",
+        "@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",
         "ethereumjs-util": "^7.0.10",
         "ethers": "~4.0.4"
     },

contracts/zero-ex/test/artifacts.ts

@@ -101,6 +101,7 @@ import * as MetaTransactionsFeature from '../test/generated-artifacts/MetaTransa
 import * as MixinAaveV2 from '../test/generated-artifacts/MixinAaveV2.json';
 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 MixinCompound from '../test/generated-artifacts/MixinCompound.json';
@@ -313,6 +314,7 @@ export const artifacts = {
     MixinAaveV2: MixinAaveV2 as ContractArtifact,
     MixinBalancer: MixinBalancer as ContractArtifact,
     MixinBalancerV2: MixinBalancerV2 as ContractArtifact,
+    MixinBalancerV2Batch: MixinBalancerV2Batch as ContractArtifact,
     MixinBancor: MixinBancor as ContractArtifact,
     MixinCoFiX: MixinCoFiX as ContractArtifact,
     MixinCompound: MixinCompound as ContractArtifact,

contracts/zero-ex/test/wrappers.ts

@@ -99,6 +99,7 @@ export * from '../test/generated-wrappers/meta_transactions_feature';
 export * from '../test/generated-wrappers/mixin_aave_v2';
 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_compound';

contracts/zero-ex/tsconfig.json

@@ -132,6 +132,7 @@
         "test/generated-artifacts/MixinAaveV2.json",
         "test/generated-artifacts/MixinBalancer.json",
         "test/generated-artifacts/MixinBalancerV2.json",
+        "test/generated-artifacts/MixinBalancerV2Batch.json",
         "test/generated-artifacts/MixinBancor.json",
         "test/generated-artifacts/MixinCoFiX.json",
         "test/generated-artifacts/MixinCompound.json",

docs/additional/audits.rst

@@ -4,23 +4,28 @@ Audits
 
 Below are links to our third-party audit reports.
 
-+------------------+---------------------------------------------------------------------------------------------------------------+
-| **Release**      | **Reports**                                                                                                   |
-+------------------+---------------------------------------------------------------------------------------------------------------+
-| Exchange V4      | * `Consensys Diligence (December 2020) <https://consensys.net/diligence/audits/2020/12/0x-exchange-v4/>`__    |
-+------------------+---------------------------------------------------------------------------------------------------------------+
-| Exchange V3      | * `Trail of Bits <http://zeips.0x.org.s3-website.us-east-2.amazonaws.com/audits/56/trail-of-bits/audit.pdf>`_ |
-|                  | * `Consensys Diligence (Exchange) <https://diligence.consensys.net/audits/2019/09/0x-v3-exchange/>`__         |
-|                  | * `Consensys Diligence (Staking) <https://diligence.consensys.net/audits/2019/10/0x-v3-staking/>`__           |
-+------------------+---------------------------------------------------------------------------------------------------------------+
-| Exchange V2.1    | * `First <https://docs.google.com/document/d/1jYv6V21MfCSwCS5fxD6ZyaLWGzkpRSUO0lZpST94XsA/edit>`_             |
-|                  | * `Consensys Diligence <https://github.com/ConsenSys/0x_audit_report_2018-07-23>`_                            |
-+------------------+---------------------------------------------------------------------------------------------------------------+
-| MultiAssetProxy  | * `Consensys Diligence <https://github.com/ConsenSys/0x-audit-report-2018-12>`__                              |
-+------------------+---------------------------------------------------------------------------------------------------------------+
-| ERC1155Proxy     | * `Consensys Diligence <https://github.com/ConsenSys/0x-audit-report-2019-05>`__                              |
-+------------------+---------------------------------------------------------------------------------------------------------------+
-| StaticCallProxy  | * No third-party audit.                                                                                       |
-+------------------+---------------------------------------------------------------------------------------------------------------+
-| ERC20BridgeProxy | * No third-party audit.                                                                                       |
-+------------------+---------------------------------------------------------------------------------------------------------------+
++----------------------+---------------------------------------------------------------------------------------------------------------------------+
+| **Release**          | **Reports**                                                                                                               |
++----------------------+---------------------------------------------------------------------------------------------------------------------------+
+| ERC721OrdersFeature  | * `ABDK Consulting <https://s3.us-east-2.amazonaws.com/zeips.0x.org/audits/abdk-consulting/ABDK_0x_Solidity_v_1_0.pdf>`__ |
+|                      |                                                                                                                           |
+|                      |                                                                                                                           |
+| ERC1155OrdersFeature |                                                                                                                           |
++----------------------+---------------------------------------------------------------------------------------------------------------------------+
+| Exchange V4          | * `Consensys Diligence (December 2020) <https://consensys.net/diligence/audits/2020/12/0x-exchange-v4/>`__                |
++----------------------+---------------------------------------------------------------------------------------------------------------------------+
+| Exchange V3          | * `Trail of Bits <http://zeips.0x.org.s3-website.us-east-2.amazonaws.com/audits/56/trail-of-bits/audit.pdf>`__            |
+|                      | * `Consensys Diligence (Exchange) <https://diligence.consensys.net/audits/2019/09/0x-v3-exchange/>`__                     |
+|                      | * `Consensys Diligence (Staking) <https://diligence.consensys.net/audits/2019/10/0x-v3-staking/>`__                       |
++----------------------+---------------------------------------------------------------------------------------------------------------------------+
+| Exchange V2.1        | * `First <https://docs.google.com/document/d/1jYv6V21MfCSwCS5fxD6ZyaLWGzkpRSUO0lZpST94XsA/edit>`_                         |
+|                      | * `Consensys Diligence <https://github.com/ConsenSys/0x_audit_report_2018-07-23>`_                                        |
++----------------------+---------------------------------------------------------------------------------------------------------------------------+
+| MultiAssetProxy      | * `Consensys Diligence <https://github.com/ConsenSys/0x-audit-report-2018-12>`__                                          |
++----------------------+---------------------------------------------------------------------------------------------------------------------------+
+| ERC1155Proxy         | * `Consensys Diligence <https://github.com/ConsenSys/0x-audit-report-2019-05>`__                                          |
++----------------------+---------------------------------------------------------------------------------------------------------------------------+
+| StaticCallProxy      | * No third-party audit.                                                                                                   |
++----------------------+---------------------------------------------------------------------------------------------------------------------------+
+| ERC20BridgeProxy     | * No third-party audit.                                                                                                   |
++----------------------+---------------------------------------------------------------------------------------------------------------------------+

package.json

@@ -60,21 +60,22 @@
         "ignoreDependencyVersionsForPackage": "contract-wrappers"
     },
     "devDependencies": {
-        "@0x/monorepo-scripts": "^3.2.1",
         "@0x-lerna-fork/lerna": "3.16.10",
+        "@0x/monorepo-scripts": "^3.2.4",
         "@0xproject/npm-cli-login": "^0.0.11",
         "async-child-process": "^1.1.1",
         "coveralls": "^3.0.0",
-        "ganache-cli": "6.8.0-istanbul.0",
+        "ganache-cli": "6.12.2",
         "lcov-result-merger": "^3.0.0",
         "lerna": "^3.0.0-beta.25",
         "npm-run-all": "^4.1.2",
         "prettier": "1.19.1",
         "source-map-support": "^0.5.6",
-        "typescript": "4.2.2",
+        "typescript": "4.6.3",
         "wsrun": "^5.2.4"
     },
     "resolutions": {
-        "merkle-patricia-tree": "^2.3.2"
+        "merkle-patricia-tree": "3.0.0",
+        "**/bignumber.js": "^9.0.2"
     }
 }

packages/asset-swapper/CHANGELOG.json

@@ -1,4 +1,216 @@
 [
+    {
+        "version": "16.60.0",
+        "changes": [
+            {
+                "note": "Add BiSwap on BSC",
+                "pr": 467
+            }
+        ]
+    },
+    {
+        "version": "16.59.0",
+        "changes": [
+            {
+                "note": "Remove SnowSwap on mainnet",
+                "pr": 468
+            },
+            {
+                "note": "Offboard Swerve Finance and LinkSwap",
+                "pr": 469
+            },
+            {
+                "note": "Offboard Eth2Dai",
+                "pr": 470
+            },
+            {
+                "note": "Add an optional IRfqClient for SwapQuoter#getSwapQuoteAsync",
+                "pr": 467
+            }
+        ],
+        "timestamp": 1652400434
+    },
+    {
+        "version": "16.58.0",
+        "changes": [
+            {
+                "note": "Update Saddle pools on Mainnet",
+                "pr": 450
+            }
+        ]
+    },
+    {
+        "version": "16.57.3",
+        "changes": [
+            {
+                "note": "Fix a runtime error related to BalancerV2SwapInfoCache",
+                "pr": 472
+            }
+        ],
+        "timestamp": 1652146864
+    },
+    {
+        "version": "16.57.2",
+        "changes": [
+            {
+                "note": "Fix missing AMM quotes on indicative Quote Reports",
+                "pr": 466
+            }
+        ],
+        "timestamp": 1651526551
+    },
+    {
+        "version": "16.57.1",
+        "changes": [
+            {
+                "note": "Added QUICK/ANY pair on Polygon",
+                "pr": 464
+            },
+            {
+                "note": "Added cvxFXS/FXS curve pool on mainnet",
+                "pr": 465
+            }
+        ]
+    },
+    {
+        "version": "16.57.0",
+        "changes": [
+            {
+                "note": "Add BalancerV2 batch swap support",
+                "pr": 462
+            }
+        ],
+        "timestamp": 1650611093
+    },
+    {
+        "version": "16.56.0",
+        "changes": [
+            {
+                "note": "Add estimatedGas to ExtendedQuoteReport",
+                "pr": 463
+            }
+        ],
+        "timestamp": 1650575781
+    },
+    {
+        "version": "16.55.0",
+        "changes": [
+            {
+                "note": "Fix fillRfqOrder VIP being used for swaps that need transformERC20",
+                "pr": 461
+            }
+        ],
+        "timestamp": 1649347667
+    },
+    {
+        "version": "16.54.0",
+        "changes": [
+            {
+                "note": "Add true VIP support for eligible RFQt swaps",
+                "pr": 458
+            }
+        ],
+        "timestamp": 1649215576
+    },
+    {
+        "version": "16.53.0",
+        "changes": [
+            {
+                "note": "Adds support for STG/USDC pool on Curve Mainnet",
+                "pr": 451
+            },
+            {
+                "note": "Use neon-router in asset-swapper tests",
+                "pr": 453
+            },
+            {
+                "note": "Add sampler blocknumber to quote report data",
+                "pr": 448
+            }
+        ],
+        "timestamp": 1648739346
+    },
+    {
+        "version": "16.52.0",
+        "changes": [
+            {
+                "note": "Adds support for mobius money on celo",
+                "pr": 423
+            }
+        ]
+    },
+    {
+        "version": "16.51.0",
+        "changes": [
+            {
+                "note": "Added `Curve` `YFI-ETH` pool",
+                "pr": 444
+            }
+        ],
+        "timestamp": 1646888282
+    },
+    {
+        "version": "16.50.3",
+        "changes": [
+            {
+                "note": "Routing glue optimization",
+                "pr": 439
+            },
+            {
+                "note": "Move VIP source routing into neon-router & disable fallback orders for native/plp",
+                "pr": 440
+            }
+        ],
+        "timestamp": 1646837959
+    },
+    {
+        "version": "16.50.2",
+        "changes": [
+            {
+                "note": "Update `Uniswap_V3` address on `Ropsten`",
+                "pr": 441
+            }
+        ],
+        "timestamp": 1646617024
+    },
+    {
+        "version": "16.50.1",
+        "changes": [
+            {
+                "note": "Add BTRFLY/WETH Curve pool on mainnet",
+                "pr": 437
+            },
+            {
+                "note": "Lower Uniswap V3 Sampler gas allowance",
+                "pr": 438
+            }
+        ],
+        "timestamp": 1646312638
+    },
+    {
+        "version": "16.50.0",
+        "changes": [
+            {
+                "note": "Adding support for Geist on `Fantom`",
+                "pr": 398
+            },
+            {
+                "note": "Improve Uniswap V3 gas schedule",
+                "pr": 424
+            }
+        ],
+        "timestamp": 1646225739
+    },
+    {
+        "version": "16.49.9",
+        "changes": [
+            {
+                "note": "Fix native order scaling & filter out 1 wei quotes",
+                "pr": "430"
+            }
+        ],
+        "timestamp": 1645696356
+    },
     {
         "timestamp": 1645569128,
         "version": "16.49.8",

packages/asset-swapper/CHANGELOG.md

@@ -5,6 +5,83 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v16.59.0 - _May 13, 2022_
+
+    * Remove SnowSwap on mainnet (#468)
+    * Offboard Swerve Finance and LinkSwap (#469)
+    * Offboard Eth2Dai (#470)
+    * Add an optional IRfqClient for SwapQuoter#getSwapQuoteAsync (#467)
+
+## v16.58.0 - _Invalid date_
+
+    * Update Saddle pools on Mainnet (#450)
+
+## v16.57.3 - _May 10, 2022_
+
+    * Fix a runtime error related to BalancerV2SwapInfoCache (#472)
+
+## v16.57.2 - _May 2, 2022_
+
+    * Fix missing AMM quotes on indicative Quote Reports (#466)
+
+## v16.57.1 - _Invalid date_
+
+    * Added QUICK/ANY pair on Polygon (#464)
+    * Added cvxFXS/FXS curve pool on mainnet (#465)
+
+## v16.57.0 - _April 22, 2022_
+
+    * Add BalancerV2 batch swap support (#462)
+
+## v16.56.0 - _April 21, 2022_
+
+    * Add estimatedGas to ExtendedQuoteReport (#463)
+
+## v16.55.0 - _April 7, 2022_
+
+    * Fix fillRfqOrder VIP being used for swaps that need transformERC20 (#461)
+
+## v16.54.0 - _April 6, 2022_
+
+    * Add true VIP support for eligible RFQt swaps (#458)
+
+## v16.53.0 - _March 31, 2022_
+
+    * Adds support for STG/USDC pool on Curve Mainnet (#451)
+    * Use neon-router in asset-swapper tests (#453)
+    * Add sampler blocknumber to quote report data (#448)
+
+## v16.52.0 - _Invalid date_
+
+    * Adds support for mobius money on celo (#423)
+
+## v16.51.0 - _March 10, 2022_
+
+    * Added `Curve` `YFI-ETH` pool (#444)
+
+## v16.50.3 - _March 9, 2022_
+
+    * Routing glue optimization (#439)
+    * Move VIP source routing into neon-router & disable fallback orders for native/plp (#440)
+
+## v16.50.2 - _March 7, 2022_
+
+    * Update `Uniswap_V3` address on `Ropsten` (#441)
+
+## v16.50.1 - _March 3, 2022_
+
+    * Add BTRFLY/WETH Curve pool on mainnet (#437)
+    * Lower Uniswap V3 Sampler gas allowance (#438)
+
+## v16.50.0 - _March 2, 2022_
+
+    * Adding support for Geist on `Fantom` (#398)
+    * Improve Uniswap V3 gas schedule (#424)
+
+## v16.49.9 - _February 24, 2022_
+
+    * Fix native order scaling & filter out 1 wei quotes (#430)
+
 ## v16.49.8 - _February 22, 2022_
 
     * Dependencies updated

packages/asset-swapper/compiler.json

@@ -6,7 +6,7 @@
     "shouldSaveStandardInput": true,
     "compilerSettings": {
         "evmVersion": "istanbul",
-        "optimizer": { "enabled": true, "runs": 200, "details": { "yul": true, "deduplicate": true } },
+        "optimizer": { "enabled": true, "runs": 200, "details": { "yul": false, "deduplicate": true } },
         "outputSelection": {
             "*": {
                 "*": [

packages/asset-swapper/contracts/src/BalancerV2BatchSampler.sol

@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2021 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/IBalancerV2Vault.sol";
+import "./BalancerV2Common.sol";
+
+contract BalancerV2BatchSampler is BalancerV2Common {
+
+    // Replaces amount for first step with each takerTokenAmount and calls queryBatchSwap using supplied steps
+    /// @dev Sample sell quotes from Balancer V2 supporting multihops.
+    /// @param swapSteps Array of swap steps (can be >= 1).
+    /// @param swapAssets Array of token address for swaps.
+    /// @param takerTokenAmounts Taker token sell amount for each sample.
+    function sampleMultihopSellsFromBalancerV2(
+        IBalancerV2Vault vault,
+        IBalancerV2Vault.BatchSwapStep[] memory swapSteps,
+        address[] memory swapAssets,
+        uint256[] memory takerTokenAmounts
+    )
+        public
+        returns (uint256[] memory makerTokenAmounts)
+    {
+        uint256 numSamples = takerTokenAmounts.length;
+        makerTokenAmounts = new uint256[](numSamples);
+        IBalancerV2Vault.FundManagement memory swapFunds =
+            _createSwapFunds();
+
+        for (uint256 i = 0; i < numSamples; i++) {
+            swapSteps[0].amount = takerTokenAmounts[i];
+            try
+                // For sells we specify the takerToken which is what the vault will receive from the trade
+                vault.queryBatchSwap(IBalancerV2Vault.SwapKind.GIVEN_IN, swapSteps, swapAssets, swapFunds)
+            // amounts represent pool balance deltas from the swap (incoming balance, outgoing balance)
+            returns (int256[] memory amounts) {
+                // Outgoing balance is negative so we need to flip the sign
+                // Note - queryBatchSwap will return a delta for each token in the assets array and last asset should be tokenOut
+                int256 amountOutFromPool = amounts[amounts.length - 1] * -1;
+                if (amountOutFromPool <= 0) {
+                    break;
+                }
+                makerTokenAmounts[i] = uint256(amountOutFromPool);
+            } catch {
+                // Swallow failures, leaving all results as zero.
+                break;
+            }
+        }
+    }
+
+    // Replaces amount for first step with each makerTokenAmount and calls queryBatchSwap using supplied steps
+    /// @dev Sample buy quotes from Balancer V2 supporting multihops.
+    /// @param swapSteps Array of swap steps (can be >= 1).
+    /// @param swapAssets Array of token address for swaps.
+    /// @param makerTokenAmounts Maker token buy amount for each sample.
+    function sampleMultihopBuysFromBalancerV2(
+        IBalancerV2Vault vault,
+        IBalancerV2Vault.BatchSwapStep[] memory swapSteps,
+        address[] memory swapAssets,
+        uint256[] memory makerTokenAmounts
+    )
+        public
+        returns (uint256[] memory takerTokenAmounts)
+    {
+        uint256 numSamples = makerTokenAmounts.length;
+        takerTokenAmounts = new uint256[](numSamples);
+        IBalancerV2Vault.FundManagement memory swapFunds =
+            _createSwapFunds();
+
+        for (uint256 i = 0; i < numSamples; i++) {
+            swapSteps[0].amount = makerTokenAmounts[i];
+            try
+                // Uses GIVEN_OUT type for Buy
+                vault.queryBatchSwap(IBalancerV2Vault.SwapKind.GIVEN_OUT, swapSteps, swapAssets, swapFunds)
+            // amounts represent pool balance deltas from the swap (incoming balance, outgoing balance)
+            returns (int256[] memory amounts) {
+                int256 amountIntoPool = amounts[0];
+                if (amountIntoPool <= 0) {
+                    break;
+                }
+                takerTokenAmounts[i] = uint256(amountIntoPool);
+            } catch {
+                // Swallow failures, leaving all results as zero.
+                break;
+            }
+        }
+    }
+}

packages/asset-swapper/contracts/src/BalancerV2Common.sol

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2021 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/IBalancerV2Vault.sol";
+
+
+contract BalancerV2Common {
+
+    function _createSwapFunds()
+        internal
+        view
+        returns (IBalancerV2Vault.FundManagement memory)
+    {
+        return
+            IBalancerV2Vault.FundManagement({
+                sender: address(this),
+                fromInternalBalance: false,
+                recipient: payable(address(this)),
+                toInternalBalance: false
+            });
+    }
+}

packages/asset-swapper/contracts/src/BalancerV2Sampler.sol

@@ -21,44 +21,11 @@ pragma solidity ^0.6;
 pragma experimental ABIEncoderV2;
 
 import "./SamplerUtils.sol";
+import "./interfaces/IBalancerV2Vault.sol";
+import "./BalancerV2Common.sol";
 
-/// @dev Minimal Balancer V2 Vault interface
-///      for documentation refer to https://github.com/balancer-labs/balancer-core-v2/blob/master/contracts/vault/interfaces/IVault.sol
-interface IBalancerV2Vault {
-    enum SwapKind { GIVEN_IN, GIVEN_OUT }
 
-    struct BatchSwapStep {
-        bytes32 poolId;
-        uint256 assetInIndex;
-        uint256 assetOutIndex;
-        uint256 amount;
-        bytes userData;
-    }
-
-    struct FundManagement {
-        address sender;
-        bool fromInternalBalance;
-        address payable recipient;
-        bool toInternalBalance;
-    }
-
-    function queryBatchSwap(
-        SwapKind kind,
-        BatchSwapStep[] calldata swaps,
-        IAsset[] calldata assets,
-        FundManagement calldata funds
-    ) external returns (int256[] memory assetDeltas);
-}
-interface IAsset {
-    // solhint-disable-previous-line no-empty-blocks
-}
-
-contract BalancerV2Sampler is SamplerUtils {
-
-    struct BalancerV2PoolInfo {
-        bytes32 poolId;
-        address vault;
-    }
+contract BalancerV2Sampler is SamplerUtils, BalancerV2Common {
 
     /// @dev Sample sell quotes from Balancer V2.
     /// @param poolInfo Struct with pool related data
@@ -68,7 +35,7 @@ contract BalancerV2Sampler is SamplerUtils {
     /// @return makerTokenAmounts Maker amounts bought at each taker token
     ///         amount.
     function sampleSellsFromBalancerV2(
-        BalancerV2PoolInfo memory poolInfo,
+        IBalancerV2Vault.BalancerV2PoolInfo memory poolInfo,
         address takerToken,
         address makerToken,
         uint256[] memory takerTokenAmounts
@@ -78,9 +45,9 @@ contract BalancerV2Sampler is SamplerUtils {
     {
         _assertValidPair(makerToken, takerToken);
         IBalancerV2Vault vault = IBalancerV2Vault(poolInfo.vault);
-        IAsset[] memory swapAssets = new IAsset[](2);
-        swapAssets[0] = IAsset(takerToken);
-        swapAssets[1] = IAsset(makerToken);
+        address[] memory swapAssets = new address[](2);
+        swapAssets[0] = takerToken;
+        swapAssets[1] = makerToken;
 
         uint256 numSamples = takerTokenAmounts.length;
         makerTokenAmounts = new uint256[](numSamples);
@@ -97,7 +64,7 @@ contract BalancerV2Sampler is SamplerUtils {
             // amounts represent pool balance deltas from the swap (incoming balance, outgoing balance)
             returns (int256[] memory amounts) {
                 // Outgoing balance is negative so we need to flip the sign
-                int256 amountOutFromPool = amounts[1] * -1;
+                int256 amountOutFromPool = amounts[amounts.length - 1] * -1;
                 if (amountOutFromPool <= 0) {
                     break;
                 }
@@ -117,7 +84,7 @@ contract BalancerV2Sampler is SamplerUtils {
     /// @return takerTokenAmounts Taker amounts sold at each maker token
     ///         amount.
     function sampleBuysFromBalancerV2(
-        BalancerV2PoolInfo memory poolInfo,
+        IBalancerV2Vault.BalancerV2PoolInfo memory poolInfo,
         address takerToken,
         address makerToken,
         uint256[] memory makerTokenAmounts
@@ -127,9 +94,9 @@ contract BalancerV2Sampler is SamplerUtils {
     {
         _assertValidPair(makerToken, takerToken);
         IBalancerV2Vault vault = IBalancerV2Vault(poolInfo.vault);
-        IAsset[] memory swapAssets = new IAsset[](2);
-        swapAssets[0] = IAsset(takerToken);
-        swapAssets[1] = IAsset(makerToken);
+        address[] memory swapAssets = new address[](2);
+        swapAssets[0] = takerToken;
+        swapAssets[1] = makerToken;
 
         uint256 numSamples = makerTokenAmounts.length;
         takerTokenAmounts = new uint256[](numSamples);
@@ -157,7 +124,7 @@ contract BalancerV2Sampler is SamplerUtils {
     }
 
     function _createSwapSteps(
-        BalancerV2PoolInfo memory poolInfo,
+        IBalancerV2Vault.BalancerV2PoolInfo memory poolInfo,
         uint256 amount
     ) private pure returns (IBalancerV2Vault.BatchSwapStep[] memory) {
         IBalancerV2Vault.BatchSwapStep[] memory swapSteps =
@@ -172,18 +139,4 @@ contract BalancerV2Sampler is SamplerUtils {
 
         return swapSteps;
     }
-
-    function _createSwapFunds()
-        private
-        view
-        returns (IBalancerV2Vault.FundManagement memory)
-    {
-        return
-            IBalancerV2Vault.FundManagement({
-                sender: address(this),
-                fromInternalBalance: false,
-                recipient: payable(address(this)),
-                toInternalBalance: false
-            });
-    }
 }

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

@@ -22,9 +22,8 @@ pragma experimental ABIEncoderV2;
 
 import "./interfaces/IBancor.sol";
 
-contract CompilerHack {}
 
-contract BancorSampler is CompilerHack {
+contract BancorSampler {
 
     /// @dev Base gas limit for Bancor calls.
     uint256 constant private BANCOR_CALL_GAS = 300e3; // 300k

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

@@ -22,6 +22,7 @@ pragma experimental ABIEncoderV2;
 
 import "./BalancerSampler.sol";
 import "./BalancerV2Sampler.sol";
+import "./BalancerV2BatchSampler.sol";
 import "./BancorSampler.sol";
 import "./CompoundSampler.sol";
 import "./CurveSampler.sol";
@@ -32,7 +33,6 @@ import "./KyberDmmSampler.sol";
 import "./LidoSampler.sol";
 import "./LiquidityProviderSampler.sol";
 import "./MakerPSMSampler.sol";
-import "./MultiBridgeSampler.sol";
 import "./MStableSampler.sol";
 import "./MooniswapSampler.sol";
 import "./NativeOrderSampler.sol";
@@ -48,6 +48,7 @@ import "./UtilitySampler.sol";
 contract ERC20BridgeSampler is
     BalancerSampler,
     BalancerV2Sampler,
+    BalancerV2BatchSampler,
     BancorSampler,
     CompoundSampler,
     CurveSampler,
@@ -60,7 +61,6 @@ contract ERC20BridgeSampler is
     MakerPSMSampler,
     MStableSampler,
     MooniswapSampler,
-    MultiBridgeSampler,
     NativeOrderSampler,
     ShellSampler,
     SmoothySampler,
@@ -92,4 +92,6 @@ contract ERC20BridgeSampler is
             (callResults[i].success, callResults[i].data) = address(this).call(callDatas[i]);
         }
     }
+
+    receive() external payable {}
 }

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

@@ -1,82 +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/IMultiBridge.sol";
-
-
-contract MultiBridgeSampler {
-
-    /// @dev Default gas limit for multibridge calls.
-    uint256 constant private DEFAULT_CALL_GAS = 400e3; // 400k
-
-    /// @dev Sample sell quotes from MultiBridge.
-    /// @param multibridge Address of the MultiBridge contract.
-    /// @param takerToken Address of the taker token (what to sell).
-    /// @param intermediateToken The address of the intermediate token to
-    ///        use in an indirect route.
-    /// @param makerToken Address 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 sampleSellsFromMultiBridge(
-        address multibridge,
-        address takerToken,
-        address intermediateToken,
-        address makerToken,
-        uint256[] memory takerTokenAmounts
-    )
-        public
-        view
-        returns (uint256[] memory makerTokenAmounts)
-    {
-        // Initialize array of maker token amounts.
-        uint256 numSamples = takerTokenAmounts.length;
-        makerTokenAmounts = new uint256[](numSamples);
-
-        // If no address provided, return all zeros.
-        if (multibridge == address(0)) {
-            return makerTokenAmounts;
-        }
-
-        for (uint256 i = 0; i < numSamples; i++) {
-            (bool didSucceed, bytes memory resultData) =
-                multibridge.staticcall.gas(DEFAULT_CALL_GAS)(
-                    abi.encodeWithSelector(
-                        IMultiBridge(0).getSellQuote.selector,
-                        takerToken,
-                        intermediateToken,
-                        makerToken,
-                        takerTokenAmounts[i]
-                    ));
-            uint256 buyAmount = 0;
-            if (didSucceed) {
-                buyAmount = abi.decode(resultData, (uint256));
-            }
-            // Exit early if the amount is too high for the source to serve
-            if (buyAmount == 0) {
-                break;
-            }
-
-            makerTokenAmounts[i] = buyAmount;
-        }
-    }
-}

packages/asset-swapper/contracts/src/UniswapV3Sampler.sol

@@ -22,17 +22,43 @@ pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
 
-interface IUniswapV3Quoter {
+interface IUniswapV3QuoterV2 {
     function factory()
         external
         view
         returns (IUniswapV3Factory factory);
+
+    // @notice Returns the amount out received for a given exact input swap without executing the swap
+    // @param path The path of the swap, i.e. each token pair and the pool fee
+    // @param amountIn The amount of the first token to swap
+    // @return amountOut The amount of the last token that would be received
+    // @return sqrtPriceX96AfterList List of the sqrt price after the swap for each pool in the path
+    // @return initializedTicksCrossedList List of the initialized ticks that the swap crossed for each pool in the path
+    // @return gasEstimate The estimate of the gas that the swap consumes
     function quoteExactInput(bytes memory path, uint256 amountIn)
         external
-        returns (uint256 amountOut);
+        returns (
+            uint256 amountOut,
+            uint160[] memory sqrtPriceX96AfterList,
+            uint32[] memory initializedTicksCrossedList,
+            uint256 gasEstimate
+        );
+
+    // @notice Returns the amount in required for a given exact output swap without executing the swap
+    // @param path The path of the swap, i.e. each token pair and the pool fee. Path must be provided in reverse order
+    // @param amountOut The amount of the last token to receive
+    // @return amountIn The amount of first token required to be paid
+    // @return sqrtPriceX96AfterList List of the sqrt price after the swap for each pool in the path
+    // @return initializedTicksCrossedList List of the initialized ticks that the swap crossed for each pool in the path
+    // @return gasEstimate The estimate of the gas that the swap consumes
     function quoteExactOutput(bytes memory path, uint256 amountOut)
         external
-        returns (uint256 amountIn);
+        returns (
+            uint256 amountIn,
+            uint160[] memory sqrtPriceX96AfterList,
+            uint32[] memory initializedTicksCrossedList,
+            uint256 gasEstimate
+        );
 }
 
 interface IUniswapV3Factory {
@@ -51,23 +77,25 @@ interface IUniswapV3Pool {
 contract UniswapV3Sampler
 {
     /// @dev Gas limit for UniswapV3 calls. This is 100% a guess.
-    uint256 constant private QUOTE_GAS = 600e3;
+    uint256 constant private QUOTE_GAS = 700e3;
 
     /// @dev Sample sell quotes from UniswapV3.
     /// @param quoter UniswapV3 Quoter contract.
     /// @param path Token route. Should be takerToken -> makerToken
     /// @param takerTokenAmounts Taker token sell amount for each sample.
     /// @return uniswapPaths The encoded uniswap path for each sample.
+    /// @return uniswapGasUsed Estimated amount of gas used
     /// @return makerTokenAmounts Maker amounts bought at each taker token
     ///         amount.
     function sampleSellsFromUniswapV3(
-        IUniswapV3Quoter quoter,
+        IUniswapV3QuoterV2 quoter,
         IERC20TokenV06[] memory path,
         uint256[] memory takerTokenAmounts
     )
         public
         returns (
             bytes[] memory uniswapPaths,
+            uint256[] memory uniswapGasUsed,
             uint256[] memory makerTokenAmounts
         )
     {
@@ -76,31 +104,39 @@ contract UniswapV3Sampler
 
         makerTokenAmounts = new uint256[](takerTokenAmounts.length);
         uniswapPaths = new bytes[](takerTokenAmounts.length);
+        uniswapGasUsed = new uint256[](takerTokenAmounts.length);
 
         for (uint256 i = 0; i < takerTokenAmounts.length; ++i) {
             // Pick the best result from all the paths.
-            bytes memory topUniswapPath;
             uint256 topBuyAmount = 0;
             for (uint256 j = 0; j < poolPaths.length; ++j) {
                 bytes memory uniswapPath = _toUniswapPath(path, poolPaths[j]);
-                try
-                    quoter.quoteExactInput
-                        { gas: QUOTE_GAS }
-                        (uniswapPath, takerTokenAmounts[i])
-                        returns (uint256 buyAmount)
+                try quoter.quoteExactInput
+                    { gas: QUOTE_GAS }
+                    (uniswapPath, takerTokenAmounts[i])
+                    returns (
+                        uint256 buyAmount,
+                        uint160[] memory, /* sqrtPriceX96AfterList */
+                        uint32[] memory, /* initializedTicksCrossedList */
+                        uint256 gasUsed
+                    )
                 {
                     if (topBuyAmount <= buyAmount) {
                         topBuyAmount = buyAmount;
-                        topUniswapPath = uniswapPath;
+                        uniswapPaths[i] = uniswapPath;
+                        uniswapGasUsed[i] = gasUsed;
                     }
-                } catch { }
+                } catch {}
             }
-            // Break early if we can't complete the buys.
+            // Break early if we can't complete the sells.
             if (topBuyAmount == 0) {
+                // HACK(kimpers): To avoid too many local variables, paths and gas used is set directly in the loop
+                // then reset if no valid valid quote was found
+                uniswapPaths[i] = "";
+                uniswapGasUsed[i] = 0;
                 break;
             }
             makerTokenAmounts[i] = topBuyAmount;
-            uniswapPaths[i] = topUniswapPath;
         }
     }
 
@@ -109,16 +145,18 @@ contract UniswapV3Sampler
     /// @param path Token route. Should be takerToken -> makerToken.
     /// @param makerTokenAmounts Maker token buy amount for each sample.
     /// @return uniswapPaths The encoded uniswap path for each sample.
+    /// @return uniswapGasUsed Estimated amount of gas used
     /// @return takerTokenAmounts Taker amounts sold at each maker token
     ///         amount.
     function sampleBuysFromUniswapV3(
-        IUniswapV3Quoter quoter,
+        IUniswapV3QuoterV2 quoter,
         IERC20TokenV06[] memory path,
         uint256[] memory makerTokenAmounts
     )
         public
         returns (
             bytes[] memory uniswapPaths,
+            uint256[] memory uniswapGasUsed,
             uint256[] memory takerTokenAmounts
         )
     {
@@ -128,10 +166,10 @@ contract UniswapV3Sampler
 
         takerTokenAmounts = new uint256[](makerTokenAmounts.length);
         uniswapPaths = new bytes[](makerTokenAmounts.length);
+        uniswapGasUsed = new uint256[](makerTokenAmounts.length);
 
         for (uint256 i = 0; i < makerTokenAmounts.length; ++i) {
             // Pick the best result from all the paths.
-            bytes memory topUniswapPath;
             uint256 topSellAmount = 0;
             for (uint256 j = 0; j < poolPaths.length; ++j) {
                 // quoter requires path to be reversed for buys.
@@ -143,21 +181,30 @@ contract UniswapV3Sampler
                     quoter.quoteExactOutput
                         { gas: QUOTE_GAS }
                         (uniswapPath, makerTokenAmounts[i])
-                        returns (uint256 sellAmount)
+                        returns (
+                            uint256 sellAmount,
+                            uint160[] memory, /* sqrtPriceX96AfterList */
+                            uint32[] memory, /* initializedTicksCrossedList */
+                            uint256 gasUsed
+                        )
                 {
                     if (topSellAmount == 0 || topSellAmount >= sellAmount) {
                         topSellAmount = sellAmount;
                         // But the output path should still be encoded for sells.
-                        topUniswapPath = _toUniswapPath(path, poolPaths[j]);
+                        uniswapPaths[i] = _toUniswapPath(path, poolPaths[j]);
+                        uniswapGasUsed[i] = gasUsed;
                     }
                 } catch {}
             }
             // Break early if we can't complete the buys.
             if (topSellAmount == 0) {
+                // HACK(kimpers): To avoid too many local variables, paths and gas used is set directly in the loop
+                // then reset if no valid valid quote was found
+                uniswapPaths[i] = "";
+                uniswapGasUsed[i] = 0;
                 break;
             }
             takerTokenAmounts[i] = topSellAmount;
-            uniswapPaths[i] = topUniswapPath;
         }
     }
 
@@ -236,6 +283,7 @@ contract UniswapV3Sampler
 
     function _reverseTokenPath(IERC20TokenV06[] memory tokenPath)
         private
+        pure
         returns (IERC20TokenV06[] memory reversed)
     {
         reversed = new IERC20TokenV06[](tokenPath.length);
@@ -246,6 +294,7 @@ contract UniswapV3Sampler
 
     function _reversePoolPath(IUniswapV3Pool[] memory poolPath)
         private
+        pure
         returns (IUniswapV3Pool[] memory reversed)
     {
         reversed = new IUniswapV3Pool[](poolPath.length);

packages/asset-swapper/contracts/src/interfaces/IBalancerV2Vault.sol

@@ -0,0 +1,54 @@
+// 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;
+
+/// @dev Minimal Balancer V2 Vault interface
+///      for documentation refer to https://github.com/balancer-labs/balancer-core-v2/blob/master/contracts/vault/interfaces/IVault.sol
+interface IBalancerV2Vault {
+    enum SwapKind { GIVEN_IN, GIVEN_OUT }
+
+    struct BatchSwapStep {
+        bytes32 poolId;
+        uint256 assetInIndex;
+        uint256 assetOutIndex;
+        uint256 amount;
+        bytes userData;
+    }
+
+    struct FundManagement {
+        address sender;
+        bool fromInternalBalance;
+        address payable recipient;
+        bool toInternalBalance;
+    }
+
+    struct BalancerV2PoolInfo {
+        bytes32 poolId;
+        address vault;
+    }
+
+    function queryBatchSwap(
+        SwapKind kind,
+        BatchSwapStep[] calldata swaps,
+        address[] calldata assets,
+        FundManagement calldata funds
+    ) external returns (int256[] memory assetDeltas);
+}

packages/asset-swapper/contracts/test/DummyLiquidityProvider.sol

@@ -1,39 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-pragma solidity ^0.6;
-pragma experimental ABIEncoderV2;
-
-
-contract DummyLiquidityProvider
-{
-    /// @dev Quotes the amount of `makerToken` that would be obtained by
-    ///      selling `sellAmount` of `takerToken`.
-    /// @param sellAmount Amount of `takerToken` to sell.
-    /// @return makerTokenAmount Amount of `makerToken` that would be obtained.
-    function getSellQuote(
-        address, /* takerToken */
-        address, /* makerToken */
-        uint256 sellAmount
-    )
-        external
-        view
-        returns (uint256 makerTokenAmount)
-    {
-        makerTokenAmount = sellAmount - 1;
-    }
-
-    /// @dev Quotes the amount of `takerToken` that would need to be sold in
-    ///      order to obtain `buyAmount` of `makerToken`.
-    /// @param buyAmount Amount of `makerToken` to buy.
-    /// @return takerTokenAmount Amount of `takerToken` that would need to be sold.
-    function getBuyQuote(
-        address, /* takerToken */
-        address, /* makerToken */
-        uint256 buyAmount
-    )
-        external
-        view
-        returns (uint256 takerTokenAmount)
-    {
-        takerTokenAmount = buyAmount + 1;
-    }
-}

packages/asset-swapper/contracts/test/TestERC20BridgeSampler.sol

@@ -1,455 +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 "../src/ERC20BridgeSampler.sol";
-import "../src/interfaces/IKyberNetwork.sol";
-import "../src/interfaces/IUniswapV2Router01.sol";
-
-
-library LibDeterministicQuotes {
-
-    address private constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
-    uint256 private constant RATE_DENOMINATOR = 1 ether;
-    uint256 private constant MIN_RATE = RATE_DENOMINATOR / 100;
-    uint256 private constant MAX_RATE = 100 * RATE_DENOMINATOR;
-    uint8 private constant MIN_DECIMALS = 4;
-    uint8 private constant MAX_DECIMALS = 20;
-
-    function getDeterministicSellQuote(
-        bytes32 salt,
-        address sellToken,
-        address buyToken,
-        uint256 sellAmount
-    )
-        internal
-        pure
-        returns (uint256 buyAmount)
-    {
-        uint256 sellBase = uint256(10) ** getDeterministicTokenDecimals(sellToken);
-        uint256 buyBase = uint256(10) ** getDeterministicTokenDecimals(buyToken);
-        uint256 rate = getDeterministicRate(salt, sellToken, buyToken);
-        return sellAmount * rate * buyBase / sellBase / RATE_DENOMINATOR;
-    }
-
-    function getDeterministicBuyQuote(
-        bytes32 salt,
-        address sellToken,
-        address buyToken,
-        uint256 buyAmount
-    )
-        internal
-        pure
-        returns (uint256 sellAmount)
-    {
-        uint256 sellBase = uint256(10) ** getDeterministicTokenDecimals(sellToken);
-        uint256 buyBase = uint256(10) ** getDeterministicTokenDecimals(buyToken);
-        uint256 rate = getDeterministicRate(salt, sellToken, buyToken);
-        return buyAmount * RATE_DENOMINATOR * sellBase / rate / buyBase;
-    }
-
-    function getDeterministicTokenDecimals(address token)
-        internal
-        pure
-        returns (uint8 decimals)
-    {
-        if (token == WETH_ADDRESS) {
-            return 18;
-        }
-        bytes32 seed = keccak256(abi.encodePacked(token));
-        return uint8(uint256(seed) % (MAX_DECIMALS - MIN_DECIMALS)) + MIN_DECIMALS;
-    }
-
-    function getDeterministicRate(bytes32 salt, address sellToken, address buyToken)
-        internal
-        pure
-        returns (uint256 rate)
-    {
-        bytes32 seed = keccak256(abi.encodePacked(salt, sellToken, buyToken));
-        return uint256(seed) % (MAX_RATE - MIN_RATE) + MIN_RATE;
-    }
-}
-
-contract TestDeploymentConstants {
-
-    // solhint-disable separate-by-one-line-in-contract
-
-    // Mainnet addresses ///////////////////////////////////////////////////////
-    /// @dev Mainnet address of the WETH contract.
-    address constant private WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
-
-    /// @dev Overridable way to get the WETH address.
-    /// @return wethAddress The WETH address.
-    function _getWethAddress()
-        internal
-        view
-        returns (address wethAddress)
-    {
-        return WETH_ADDRESS;
-    }
-
-}
-
-contract FailTrigger {
-
-    // Give this address a balance to force operations to fail.
-    address payable constant public FAILURE_ADDRESS = 0xe9dB8717BC5DFB20aaf538b4a5a02B7791FF430C;
-
-    // Funds `FAILURE_ADDRESS`.
-    function enableFailTrigger() external payable {
-        FAILURE_ADDRESS.transfer(msg.value);
-    }
-
-    function _revertIfShouldFail() internal view {
-        if (FAILURE_ADDRESS.balance != 0) {
-            revert("FAIL_TRIGGERED");
-        }
-    }
-}
-
-
-contract TestERC20BridgeSamplerUniswapExchange is
-    IUniswapExchangeQuotes,
-    TestDeploymentConstants,
-    FailTrigger
-{
-    bytes32 constant private BASE_SALT = 0x1d6a6a0506b0b4a554b907a4c29d9f4674e461989d9c1921feb17b26716385ab;
-
-    address public tokenAddress;
-    bytes32 public salt;
-
-    constructor(address _tokenAddress) public {
-        tokenAddress = _tokenAddress;
-        salt = keccak256(abi.encodePacked(BASE_SALT, _tokenAddress));
-    }
-
-    // Deterministic `IUniswapExchangeQuotes.getEthToTokenInputPrice()`.
-    function getEthToTokenInputPrice(
-        uint256 ethSold
-    )
-        override
-        external
-        view
-        returns (uint256 tokensBought)
-    {
-        _revertIfShouldFail();
-        return LibDeterministicQuotes.getDeterministicSellQuote(
-            salt,
-            tokenAddress,
-            _getWethAddress(),
-            ethSold
-        );
-    }
-
-    // Deterministic `IUniswapExchangeQuotes.getEthToTokenOutputPrice()`.
-    function getEthToTokenOutputPrice(
-        uint256 tokensBought
-    )
-        override
-        external
-        view
-        returns (uint256 ethSold)
-    {
-        _revertIfShouldFail();
-        return LibDeterministicQuotes.getDeterministicBuyQuote(
-            salt,
-            _getWethAddress(),
-            tokenAddress,
-            tokensBought
-        );
-    }
-
-    // Deterministic `IUniswapExchangeQuotes.getTokenToEthInputPrice()`.
-    function getTokenToEthInputPrice(
-        uint256 tokensSold
-    )
-        override
-        external
-        view
-        returns (uint256 ethBought)
-    {
-        _revertIfShouldFail();
-        return LibDeterministicQuotes.getDeterministicSellQuote(
-            salt,
-            tokenAddress,
-            _getWethAddress(),
-            tokensSold
-        );
-    }
-
-    // Deterministic `IUniswapExchangeQuotes.getTokenToEthOutputPrice()`.
-    function getTokenToEthOutputPrice(
-        uint256 ethBought
-    )
-        override
-        external
-        view
-        returns (uint256 tokensSold)
-    {
-        _revertIfShouldFail();
-        return LibDeterministicQuotes.getDeterministicBuyQuote(
-            salt,
-            _getWethAddress(),
-            tokenAddress,
-            ethBought
-        );
-    }
-}
-
-
-contract TestERC20BridgeSamplerUniswapV2Router01 is
-    IUniswapV2Router01,
-    TestDeploymentConstants,
-    FailTrigger
-{
-    bytes32 constant private SALT = 0xadc7fcb33c735913b8635927e66896b356a53a912ab2ceff929e60a04b53b3c1;
-
-    // Deterministic `IUniswapV2Router01.getAmountsOut()`.
-    function getAmountsOut(uint256 amountIn, address[] calldata path)
-        override
-        external
-        view
-        returns (uint256[] memory amounts)
-    {
-        require(path.length >= 2, "PATH_TOO_SHORT");
-        _revertIfShouldFail();
-        amounts = new uint256[](path.length);
-        amounts[0] = amountIn;
-        for (uint256 i = 0; i < path.length - 1; ++i) {
-            amounts[i + 1] = LibDeterministicQuotes.getDeterministicSellQuote(
-                SALT,
-                path[i],
-                path[i + 1],
-                amounts[i]
-            );
-        }
-    }
-
-    // Deterministic `IUniswapV2Router01.getAmountsInt()`.
-    function getAmountsIn(uint256 amountOut, address[] calldata path)
-        override
-        external
-        view
-        returns (uint256[] memory amounts)
-    {
-        require(path.length >= 2, "PATH_TOO_SHORT");
-        _revertIfShouldFail();
-        amounts = new uint256[](path.length);
-        amounts[path.length - 1] = amountOut;
-        for (uint256 i = path.length - 1; i > 0; --i) {
-            amounts[i - 1] = LibDeterministicQuotes.getDeterministicBuyQuote(
-                SALT,
-                path[i - 1],
-                path[i],
-                amounts[i]
-            );
-        }
-    }
-}
-
-
-// solhint-disable space-after-comma
-contract TestERC20BridgeSamplerKyberNetwork is
-    TestDeploymentConstants,
-    FailTrigger
-{
-    bytes32 constant private SALT = 0x0ff3ca9d46195c39f9a12afb74207b4970349fb3cfb1e459bbf170298d326bc7;
-    address constant public ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
-
-    enum TradeType {BestOfAll, MaskIn, MaskOut, Split}
-    enum ProcessWithRate {NotRequired, Required}
-
-    // IKyberHintHandler
-    function buildTokenToEthHint(
-        address tokenSrc,
-        TradeType /* tokenToEthType */,
-        bytes32[] calldata /* tokenToEthReserveIds */,
-        uint256[] calldata /* tokenToEthSplits */
-    ) external view returns (bytes memory hint)
-    {
-        return abi.encode(tokenSrc);
-    }
-
-    function buildEthToTokenHint(
-        address tokenDest,
-        TradeType /* ethToTokenType */,
-        bytes32[] calldata /* ethToTokenReserveIds */,
-        uint256[] calldata /* ethToTokenSplits */
-    ) external view returns (bytes memory hint)
-    {
-        return abi.encode(tokenDest);
-    }
-
-    // IKyberHintHandler
-    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)
-    {
-        return abi.encode(tokenSrc);
-    }
-
-    // IKyberHintHandler
-    function getTradingReserves(
-        address tokenSrc,
-        address tokenDest,
-        bool isTokenToToken,
-        bytes calldata hint
-    )
-        external
-        view
-        returns (
-            bytes32[] memory reserveIds,
-            uint256[] memory splitValuesBps,
-            ProcessWithRate processWithRate
-        )
-    {
-        reserveIds = new bytes32[](1);
-        reserveIds[0] = bytes32(uint256(1));
-        splitValuesBps = new uint256[](0);
-        processWithRate = ProcessWithRate.NotRequired;
-    }
-
-    // Deterministic `IKyberNetworkProxy.getExpectedRateAfterFee()`.
-    function getExpectedRateAfterFee(
-        address fromToken,
-        address toToken,
-        uint256 /* srcQty */,
-        uint256 /* fee */,
-        bytes calldata /* hint */
-    )
-        external
-        view
-        returns
-        (uint256 expectedRate)
-    {
-        _revertIfShouldFail();
-        fromToken = fromToken == ETH_ADDRESS ? _getWethAddress() : fromToken;
-        toToken = toToken == ETH_ADDRESS ? _getWethAddress() : toToken;
-        expectedRate = LibDeterministicQuotes.getDeterministicRate(
-            SALT,
-            fromToken,
-            toToken
-        );
-    }
-
-    // Deterministic `IKyberNetworkProxy.getExpectedRate()`.
-    function getExpectedRate(
-        address fromToken,
-        address toToken,
-        uint256
-    )
-        external
-        view
-        returns (uint256 expectedRate, uint256)
-    {
-        _revertIfShouldFail();
-        fromToken = fromToken == ETH_ADDRESS ? _getWethAddress() : fromToken;
-        toToken = toToken == ETH_ADDRESS ? _getWethAddress() : toToken;
-        expectedRate = LibDeterministicQuotes.getDeterministicRate(
-            SALT,
-            fromToken,
-            toToken
-        );
-    }
-}
-
-
-contract TestERC20BridgeSamplerUniswapExchangeFactory is
-    IUniswapExchangeFactory
-{
-    mapping (address => IUniswapExchangeQuotes) private _exchangesByToken;
-
-    // Creates Uniswap exchange contracts for tokens.
-    function createTokenExchanges(address[] calldata tokenAddresses)
-        external
-    {
-        for (uint256 i = 0; i < tokenAddresses.length; i++) {
-            address tokenAddress = tokenAddresses[i];
-            _exchangesByToken[tokenAddress] =
-                new TestERC20BridgeSamplerUniswapExchange(tokenAddress);
-        }
-    }
-
-    // `IUniswapExchangeFactory.getExchange()`.
-    function getExchange(address tokenAddress)
-        override
-        external
-        view
-        returns (address)
-    {
-        return address(_exchangesByToken[tokenAddress]);
-    }
-}
-
-
-contract TestERC20BridgeSampler is
-    ERC20BridgeSampler,
-    FailTrigger
-{
-    TestERC20BridgeSamplerUniswapExchangeFactory public uniswap;
-    TestERC20BridgeSamplerUniswapV2Router01 public uniswapV2Router;
-    TestERC20BridgeSamplerKyberNetwork public kyber;
-
-    uint8 private constant MAX_ORDER_STATUS = uint8(IExchange.OrderStatus.CANCELLED) + 1;
-
-    constructor() public ERC20BridgeSampler() {
-        uniswap = new TestERC20BridgeSamplerUniswapExchangeFactory();
-        uniswapV2Router = new TestERC20BridgeSamplerUniswapV2Router01();
-        kyber = new TestERC20BridgeSamplerKyberNetwork();
-    }
-
-    // Creates Uniswap exchange contracts for tokens.
-    function createTokenExchanges(address[] calldata tokenAddresses)
-        external
-    {
-        uniswap.createTokenExchanges(tokenAddresses);
-    }
-
-    // Overridden to return deterministic states.
-    function getLimitOrderFillableTakerAmount(
-        IExchange.LimitOrder memory order,
-        IExchange.Signature memory,
-        IExchange
-    )
-        override
-        public
-        view
-        returns (uint256 fillableTakerAmount)
-    {
-        return uint256(keccak256(abi.encode(order.salt))) % order.takerAmount;
-    }
-
-    // Overriden to return deterministic decimals.
-    function _getTokenDecimals(address tokenAddress)
-        override
-        internal
-        view
-        returns (uint8 decimals)
-    {
-        return LibDeterministicQuotes.getDeterministicTokenDecimals(tokenAddress);
-    }
-}

packages/asset-swapper/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/asset-swapper",
-    "version": "16.49.8",
+    "version": "16.59.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -39,7 +39,7 @@
     "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|BalancerV2Sampler|BancorSampler|CompoundSampler|CurveSampler|DODOSampler|DODOV2Sampler|DummyLiquidityProvider|ERC20BridgeSampler|FakeTaker|IBalancer|IBancor|ICurve|IKyberNetwork|IMStable|IMooniswap|IMultiBridge|IShell|ISmoothy|IUniswapExchangeQuotes|IUniswapV2Router01|KyberDmmSampler|KyberSampler|LidoSampler|LiquidityProviderSampler|MStableSampler|MakerPSMSampler|MooniswapSampler|MultiBridgeSampler|NativeOrderSampler|SamplerUtils|ShellSampler|SmoothySampler|TestERC20BridgeSampler|TestNativeOrderSampler|TwoHopSampler|UniswapSampler|UniswapV2Sampler|UniswapV3Sampler|UtilitySampler).json",
+        "abis": "./test/generated-artifacts/@(ApproximateBuys|BalanceChecker|BalancerSampler|BalancerV2BatchSampler|BalancerV2Common|BalancerV2Sampler|BancorSampler|CompoundSampler|CurveSampler|DODOSampler|DODOV2Sampler|ERC20BridgeSampler|FakeTaker|IBalancer|IBalancerV2Vault|IBancor|ICurve|IKyberNetwork|IMStable|IMooniswap|IMultiBridge|IShell|ISmoothy|IUniswapExchangeQuotes|IUniswapV2Router01|KyberDmmSampler|KyberSampler|LidoSampler|LiquidityProviderSampler|MStableSampler|MakerPSMSampler|MooniswapSampler|NativeOrderSampler|SamplerUtils|ShellSampler|SmoothySampler|TestNativeOrderSampler|TwoHopSampler|UniswapSampler|UniswapV2Sampler|UniswapV3Sampler|UtilitySampler).json",
         "postpublish": {
             "assets": []
         }
@@ -58,21 +58,22 @@
         "registry": "git@github.com:0xProject/gitpkg-registry.git"
     },
     "dependencies": {
-        "@0x/assert": "^3.0.31",
-        "@0x/base-contract": "^6.4.5",
-        "@0x/contract-addresses": "^6.11.0",
-        "@0x/contract-wrappers": "^13.19.0",
-        "@0x/contracts-erc20": "^3.3.26",
-        "@0x/contracts-zero-ex": "^0.31.0",
-        "@0x/dev-utils": "^4.2.11",
-        "@0x/json-schemas": "^6.4.1",
-        "@0x/neon-router": "^0.3.2",
-        "@0x/protocol-utils": "^1.11.0",
+        "@0x/assert": "^3.0.34",
+        "@0x/base-contract": "^6.5.0",
+        "@0x/contract-addresses": "^6.13.0",
+        "@0x/contract-wrappers": "^13.20.1",
+        "@0x/contracts-erc20": "^3.3.29",
+        "@0x/contracts-zero-ex": "^0.32.0",
+        "@0x/dev-utils": "^4.2.14",
+        "@0x/json-schemas": "^6.4.4",
+        "@0x/neon-router": "^0.3.5",
+        "@0x/protocol-utils": "^11.12.0",
         "@0x/quote-server": "^6.0.6",
-        "@0x/types": "^3.3.4",
-        "@0x/typescript-typings": "^5.2.1",
-        "@0x/utils": "^6.5.0",
-        "@0x/web3-wrapper": "^7.6.2",
+        "@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",
         "@bancor/sdk": "0.2.9",
         "@ethersproject/abi": "^5.0.1",
@@ -84,29 +85,30 @@
         "axios-mock-adapter": "^1.19.0",
         "cream-sor": "^0.3.3",
         "decimal.js": "^10.2.0",
-        "ethereum-types": "^3.6.0",
+        "ethereum-types": "^3.7.0",
         "ethereumjs-util": "^7.0.10",
         "fast-abi": "^0.0.4",
         "graphql": "^15.4.0",
         "graphql-request": "^3.4.0",
         "heartbeats": "^5.0.1",
-        "lodash": "^4.17.11"
+        "lodash": "^4.17.11",
+        "sorV2": "npm:@balancer-labs/sor"
     },
     "devDependencies": {
-        "@0x/abi-gen": "^5.7.2",
+        "@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": "^2.0.43",
-        "@0x/contracts-test-utils": "^5.4.17",
-        "@0x/contracts-utils": "^4.8.7",
+        "@0x/contracts-gen": "^2.0.46",
+        "@0x/contracts-test-utils": "^5.4.20",
+        "@0x/contracts-utils": "^4.8.10",
         "@0x/mesh-rpc-client": "^9.4.2",
-        "@0x/migrations": "^8.1.15",
-        "@0x/sol-compiler": "^4.7.8",
-        "@0x/subproviders": "^6.6.2",
+        "@0x/migrations": "^8.1.18",
+        "@0x/sol-compiler": "^4.8.1",
+        "@0x/subproviders": "^6.6.5",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.4",
-        "@0x/types": "^3.3.4",
+        "@0x/types": "^3.3.6",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -123,7 +125,7 @@
         "tslint": "5.11.0",
         "typedoc": "~0.16.11",
         "typemoq": "^2.1.0",
-        "typescript": "4.2.2"
+        "typescript": "4.6.3"
     },
     "publishConfig": {
         "access": "public"

packages/asset-swapper/src/index.ts

@@ -116,6 +116,15 @@ export {
     SamplerMetrics,
 } from './types';
 export { affiliateFeeUtils } from './utils/affiliate_fee_utils';
+export {
+    IRfqClient,
+    RfqClientV1Price,
+    RfqClientV1PriceRequest,
+    RfqClientV1PriceResponse,
+    RfqClientV1Quote,
+    RfqClientV1QuoteRequest,
+    RfqClientV1QuoteResponse,
+} from './utils/irfq_client';
 export {
     DEFAULT_TOKEN_ADJACENCY_GRAPH_BY_CHAIN_ID,
     DEFAULT_GAS_SCHEDULE,

packages/asset-swapper/src/noop_samplers/GeistSampler.ts

@@ -0,0 +1,57 @@
+import { BigNumber } from '@0x/utils';
+
+import { ZERO_AMOUNT } from '../constants';
+export interface GeistInfo {
+    lendingPool: string;
+    gToken: string;
+    underlyingToken: string;
+}
+// tslint:disable-next-line:no-unnecessary-class
+export class GeistSampler {
+    public static sampleSellsFromGeist(
+        geistInfo: GeistInfo,
+        takerToken: string,
+        makerToken: string,
+        takerTokenAmounts: BigNumber[],
+    ): BigNumber[] {
+        // Deposit/Withdrawal underlying <-> gToken is always 1:1
+        if (
+            (takerToken.toLowerCase() === geistInfo.gToken.toLowerCase() &&
+                makerToken.toLowerCase() === geistInfo.underlyingToken.toLowerCase()) ||
+            (takerToken.toLowerCase() === geistInfo.underlyingToken.toLowerCase() &&
+                makerToken.toLowerCase() === geistInfo.gToken.toLowerCase())
+        ) {
+            return takerTokenAmounts;
+        }
+
+        // Not matching the reserve return 0 results
+        const numSamples = takerTokenAmounts.length;
+
+        const makerTokenAmounts = new Array(numSamples);
+        makerTokenAmounts.fill(ZERO_AMOUNT);
+        return makerTokenAmounts;
+    }
+
+    public static sampleBuysFromGeist(
+        geistInfo: GeistInfo,
+        takerToken: string,
+        makerToken: string,
+        makerTokenAmounts: BigNumber[],
+    ): BigNumber[] {
+        // Deposit/Withdrawal underlying <-> gToken is always 1:1
+        if (
+            (takerToken.toLowerCase() === geistInfo.gToken.toLowerCase() &&
+                makerToken.toLowerCase() === geistInfo.underlyingToken.toLowerCase()) ||
+            (takerToken.toLowerCase() === geistInfo.underlyingToken.toLowerCase() &&
+                makerToken.toLowerCase() === geistInfo.gToken.toLowerCase())
+        ) {
+            return makerTokenAmounts;
+        }
+
+        // Not matching the reserve return 0 results
+        const numSamples = makerTokenAmounts.length;
+        const takerTokenAmounts = new Array(numSamples);
+        takerTokenAmounts.fill(ZERO_AMOUNT);
+        return takerTokenAmounts;
+    }
+}

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

@@ -42,6 +42,7 @@ import {
     FinalUniswapV3FillData,
     LiquidityProviderFillData,
     MooniswapFillData,
+    NativeRfqOrderFillData,
     OptimizedMarketBridgeOrder,
     OptimizedMarketOrder,
     UniswapV2FillData,
@@ -60,6 +61,7 @@ import {
     isDirectSwapCompatible,
     isMultiplexBatchFillCompatible,
     isMultiplexMultiHopFillCompatible,
+    requiresTransformERC20,
 } from './quote_consumer_utils';
 
 // tslint:disable-next-line:custom-no-magic-numbers
@@ -278,7 +280,7 @@ export class ExchangeProxySwapQuoteConsumer implements SwapQuoteConsumerBase {
 
         if (
             this.chainId === ChainId.Mainnet &&
-            isDirectSwapCompatible(quote, optsWithDefaults, [ERC20BridgeSource.Curve, ERC20BridgeSource.Swerve]) &&
+            isDirectSwapCompatible(quote, optsWithDefaults, [ERC20BridgeSource.Curve]) &&
             // Curve VIP cannot currently support WETH buy/sell as the functionality needs to WITHDRAW or DEPOSIT
             // into WETH prior/post the trade.
             // ETH buy/sell is supported
@@ -333,6 +335,49 @@ export class ExchangeProxySwapQuoteConsumer implements SwapQuoteConsumerBase {
             };
         }
 
+        // RFQT VIP
+        if (
+            [ChainId.Mainnet, ChainId.Polygon].includes(this.chainId) &&
+            !isToETH &&
+            !isFromETH &&
+            quote.orders.every(o => o.type === FillQuoteTransformerOrderType.Rfq) &&
+            !requiresTransformERC20(optsWithDefaults)
+        ) {
+            const rfqOrdersData = quote.orders.map(o => o.fillData as NativeRfqOrderFillData);
+            const fillAmountPerOrder = (() => {
+                // Don't think order taker amounts are clipped to actual sell amount
+                // (the last one might be too large) so figure them out manually.
+                let remaining = sellAmount;
+                const fillAmounts = [];
+                for (const o of quote.orders) {
+                    const fillAmount = BigNumber.min(o.takerAmount, remaining);
+                    fillAmounts.push(fillAmount);
+                    remaining = remaining.minus(fillAmount);
+                }
+                return fillAmounts;
+            })();
+            const callData =
+                quote.orders.length === 1
+                    ? this._exchangeProxy
+                          .fillRfqOrder(rfqOrdersData[0].order, rfqOrdersData[0].signature, fillAmountPerOrder[0])
+                          .getABIEncodedTransactionData()
+                    : this._exchangeProxy
+                          .batchFillRfqOrders(
+                              rfqOrdersData.map(d => d.order),
+                              rfqOrdersData.map(d => d.signature),
+                              fillAmountPerOrder,
+                              true,
+                          )
+                          .getABIEncodedTransactionData();
+            return {
+                calldataHexString: callData,
+                ethAmount: ZERO_AMOUNT,
+                toAddress: this._exchangeProxy.address,
+                allowanceTarget: this._exchangeProxy.address,
+                gasOverhead: ZERO_AMOUNT,
+            };
+        }
+
         if (this.chainId === ChainId.Mainnet && isMultiplexBatchFillCompatible(quote, optsWithDefaults)) {
             return {
                 calldataHexString: this._encodeMultiplexBatchFillCalldata(

packages/asset-swapper/src/swap_quoter.ts

@@ -25,6 +25,7 @@ import {
     SwapQuoterRfqOpts,
 } from './types';
 import { assert } from './utils/assert';
+import { IRfqClient } from './utils/irfq_client';
 import { MarketOperationUtils } from './utils/market_operation_utils';
 import { BancorService } from './utils/market_operation_utils/bancor_service';
 import { SAMPLER_ADDRESS, SOURCE_FLAGS, ZERO_AMOUNT } from './utils/market_operation_utils/constants';
@@ -327,6 +328,7 @@ export class SwapQuoter {
         assetFillAmount: BigNumber,
         marketOperation: MarketOperation,
         options: Partial<SwapQuoteRequestOpts>,
+        rfqClient?: IRfqClient | undefined,
     ): Promise<SwapQuote> {
         assert.isETHAddressHex('makerToken', makerToken);
         assert.isETHAddressHex('takerToken', takerToken);
@@ -381,6 +383,7 @@ export class SwapQuoter {
                 this.expiryBufferMs,
                 rfqtOptions?.metricsProxy,
             );
+            calcOpts.rfqt.rfqClient = rfqClient;
         }
 
         const result: OptimizerResultWithReport = await this._marketOperationUtils.getOptimizerResultAsync(
@@ -519,7 +522,7 @@ function createSwapQuote(
         : calculateQuoteInfo(optimizedOrders, operation, assetFillAmount, gasPrice, gasSchedule, slippage);
 
     // Put together the swap quote
-    const { makerTokenDecimals, takerTokenDecimals } = optimizerResult.marketSideLiquidity;
+    const { makerTokenDecimals, takerTokenDecimals, blockNumber } = optimizerResult.marketSideLiquidity;
     const swapQuote = {
         makerToken,
         takerToken,
@@ -536,6 +539,7 @@ function createSwapQuote(
         extendedQuoteReportSources,
         isTwoHop,
         priceComparisonsReport,
+        blockNumber,
     };
 
     if (operation === MarketOperation.Buy) {

packages/asset-swapper/src/types.ts

@@ -179,6 +179,7 @@ export interface SwapQuoteBase {
     takerTokenDecimals: number;
     takerAmountPerEth: BigNumber;
     makerAmountPerEth: BigNumber;
+    blockNumber: number;
 }
 
 /**

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

@@ -17,7 +17,10 @@ import {
 
 const SUCCESS_CODE = 201;
 
-function getAltMarketInfo(
+/**
+ * Returns the AltOffering if it exists for a given pair
+ */
+export function getAltMarketInfo(
     offerings: AltOffering[],
     buyTokenAddress: string,
     sellTokenAddress: string,

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

@@ -0,0 +1,59 @@
+import { RfqOrder, Signature } from '@0x/protocol-utils';
+import { BigNumber } from '@0x/utils';
+
+import { AltRfqMakerAssetOfferings } from '../types';
+
+export interface RfqClientV1PriceRequest {
+    altRfqAssetOfferings: AltRfqMakerAssetOfferings | undefined;
+    assetFillAmount: BigNumber;
+    chainId: number;
+    comparisonPrice: BigNumber | undefined;
+    integratorId: string;
+    intentOnFilling: boolean;
+    makerToken: string;
+    marketOperation: 'Sell' | 'Buy';
+    takerAddress: string;
+    takerToken: string;
+    txOrigin: string;
+}
+
+export interface RfqClientV1QuoteRequest extends RfqClientV1PriceRequest {}
+
+export interface RfqClientV1Price {
+    expiry: BigNumber;
+    kind: 'rfq' | 'otc';
+    makerAmount: BigNumber;
+    makerToken: string;
+    makerUri: string;
+    takerAmount: BigNumber;
+    takerToken: string;
+}
+
+export interface RfqClientV1PriceResponse {
+    prices: RfqClientV1Price[];
+}
+
+export interface RfqClientV1Quote {
+    makerUri: string;
+    order: RfqOrder;
+    signature: Signature;
+}
+
+export interface RfqClientV1QuoteResponse {
+    quotes: RfqClientV1Quote[];
+}
+
+/**
+ * IRfqClient is an interface that defines how to connect with an Rfq system.
+ */
+export interface IRfqClient {
+    /**
+     * Fetches a list of "indicative quotes" or prices from a remote Rfq server
+     */
+    getV1PricesAsync(request: RfqClientV1PriceRequest): Promise<RfqClientV1PriceResponse>;
+
+    /**
+     * Fetches a list of "firm quotes" or signed quotes from a remote Rfq server.
+     */
+    getV1QuotesAsync(request: RfqClientV1QuoteRequest): Promise<RfqClientV1QuoteResponse>;
+}

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

@@ -6,6 +6,7 @@ import {
     APESWAP_ROUTER_BY_CHAIN_ID,
     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,
@@ -31,6 +32,7 @@ import {
     KYBER_BRIDGED_LIQUIDITY_PREFIX,
     MAX_DODOV2_POOLS_QUERIED,
     MAX_KYBER_RESERVES_QUERIED,
+    MOBIUSMONEY_CELO_INFOS,
     MORPHEUSSWAP_ROUTER_BY_CHAIN_ID,
     MSTABLE_POOLS_BY_CHAIN_ID,
     NERVE_BSC_INFOS,
@@ -45,11 +47,9 @@ import {
     SHIBASWAP_ROUTER_BY_CHAIN_ID,
     SMOOTHY_BSC_INFOS,
     SMOOTHY_MAINNET_INFOS,
-    SNOWSWAP_MAINNET_INFOS,
     SPIRITSWAP_ROUTER_BY_CHAIN_ID,
     SPOOKYSWAP_ROUTER_BY_CHAIN_ID,
     SUSHISWAP_ROUTER_BY_CHAIN_ID,
-    SWERVE_MAINNET_INFOS,
     SYNAPSE_AVALANCHE_INFOS,
     SYNAPSE_BSC_INFOS,
     SYNAPSE_FANTOM_INFOS,
@@ -224,32 +224,6 @@ export function getCurveV2InfosForPair(chainId: ChainId, takerToken: string, mak
     }
 }
 
-export function getSwerveInfosForPair(chainId: ChainId, takerToken: string, makerToken: string): CurveInfo[] {
-    if (chainId !== ChainId.Mainnet) {
-        return [];
-    }
-    return Object.values(SWERVE_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),
-        ),
-    );
-}
-
-export function getSnowSwapInfosForPair(chainId: ChainId, takerToken: string, makerToken: string): CurveInfo[] {
-    if (chainId !== ChainId.Mainnet) {
-        return [];
-    }
-    return Object.values(SNOWSWAP_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),
-        ),
-    );
-}
-
 export function getNerveInfosForPair(chainId: ChainId, takerToken: string, makerToken: string): CurveInfo[] {
     if (chainId !== ChainId.BSC) {
         return [];
@@ -449,6 +423,18 @@ export function getAcryptosInfosForPair(chainId: ChainId, takerToken: string, ma
         ),
     );
 }
+export function getMobiusMoneyInfoForPair(chainId: ChainId, takerToken: string, makerToken: string): CurveInfo[] {
+    if (chainId !== ChainId.Celo) {
+        return [];
+    }
+    return Object.values(MOBIUSMONEY_CELO_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),
+        ),
+    );
+}
 
 export function getShellLikeInfosForPair(
     chainId: ChainId,
@@ -480,8 +466,6 @@ export function getCurveLikeInfosForPair(
     source:
         | ERC20BridgeSource.Curve
         | ERC20BridgeSource.CurveV2
-        | ERC20BridgeSource.Swerve
-        | ERC20BridgeSource.SnowSwap
         | ERC20BridgeSource.Nerve
         | ERC20BridgeSource.Synapse
         | ERC20BridgeSource.Belt
@@ -491,7 +475,8 @@ export function getCurveLikeInfosForPair(
         | ERC20BridgeSource.IronSwap
         | ERC20BridgeSource.XSigma
         | ERC20BridgeSource.FirebirdOneSwap
-        | ERC20BridgeSource.ACryptos,
+        | ERC20BridgeSource.ACryptos
+        | ERC20BridgeSource.MobiusMoney,
 ): CurveDetailedInfo[] {
     let pools: CurveInfo[] = [];
     switch (source) {
@@ -501,12 +486,6 @@ export function getCurveLikeInfosForPair(
         case ERC20BridgeSource.CurveV2:
             pools = getCurveV2InfosForPair(chainId, takerToken, makerToken);
             break;
-        case ERC20BridgeSource.Swerve:
-            pools = getSwerveInfosForPair(chainId, takerToken, makerToken);
-            break;
-        case ERC20BridgeSource.SnowSwap:
-            pools = getSnowSwapInfosForPair(chainId, takerToken, makerToken);
-            break;
         case ERC20BridgeSource.Nerve:
             pools = getNerveInfosForPair(chainId, takerToken, makerToken);
             break;
@@ -537,6 +516,9 @@ export function getCurveLikeInfosForPair(
         case ERC20BridgeSource.ACryptos:
             pools = getAcryptosInfosForPair(chainId, takerToken, makerToken);
             break;
+        case ERC20BridgeSource.MobiusMoney:
+            pools = getMobiusMoneyInfoForPair(chainId, takerToken, makerToken);
+            break;
         default:
             throw new Error(`Unknown Curve like source ${source}`);
     }
@@ -572,7 +554,8 @@ export function uniswapV2LikeRouterAddress(
         | ERC20BridgeSource.UbeSwap
         | ERC20BridgeSource.MorpheusSwap
         | ERC20BridgeSource.SpookySwap
-        | ERC20BridgeSource.SpiritSwap,
+        | ERC20BridgeSource.SpiritSwap
+        | ERC20BridgeSource.BiSwap,
 ): string {
     switch (source) {
         case ERC20BridgeSource.UniswapV2:
@@ -621,6 +604,8 @@ export function uniswapV2LikeRouterAddress(
             return SPOOKYSWAP_ROUTER_BY_CHAIN_ID[chainId];
         case ERC20BridgeSource.SpiritSwap:
             return SPIRITSWAP_ROUTER_BY_CHAIN_ID[chainId];
+        case ERC20BridgeSource.BiSwap:
+            return BISWAP_ROUTER_BY_CHAIN_ID[chainId];
         default:
             throw new Error(`Unknown UniswapV2 like source ${source}`);
     }

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

@@ -8,6 +8,7 @@ import { TokenAdjacencyGraphBuilder } from '../token_adjacency_graph_builder';
 import { SourceFilters } from './source_filters';
 import {
     AaveV2FillData,
+    BalancerV2BatchSwapFillData,
     BancorFillData,
     CompoundFillData,
     CurveFillData,
@@ -17,7 +18,10 @@ import {
     ERC20BridgeSource,
     FeeSchedule,
     FillData,
+    FinalUniswapV3FillData,
+    GeistFillData,
     GetMarketOrdersOpts,
+    isFinalUniswapV3FillData,
     KyberSamplerOpts,
     LidoInfo,
     LiquidityProviderFillData,
@@ -75,7 +79,6 @@ export const SELL_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.Native,
             ERC20BridgeSource.Uniswap,
             ERC20BridgeSource.UniswapV2,
-            ERC20BridgeSource.Eth2Dai,
             ERC20BridgeSource.Kyber,
             ERC20BridgeSource.Curve,
             ERC20BridgeSource.Balancer,
@@ -83,8 +86,6 @@ export const SELL_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.Bancor,
             ERC20BridgeSource.MStable,
             ERC20BridgeSource.Mooniswap,
-            ERC20BridgeSource.Swerve,
-            ERC20BridgeSource.SnowSwap,
             ERC20BridgeSource.SushiSwap,
             ERC20BridgeSource.Shell,
             ERC20BridgeSource.MultiHop,
@@ -93,7 +94,6 @@ export const SELL_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.Cream,
             ERC20BridgeSource.LiquidityProvider,
             ERC20BridgeSource.CryptoCom,
-            ERC20BridgeSource.Linkswap,
             ERC20BridgeSource.Lido,
             ERC20BridgeSource.MakerPsm,
             ERC20BridgeSource.KyberDmm,
@@ -146,6 +146,7 @@ export const SELL_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.JetSwap,
             ERC20BridgeSource.ACryptos,
             ERC20BridgeSource.KyberDmm,
+            ERC20BridgeSource.BiSwap,
         ]),
         [ChainId.Polygon]: new SourceFilters([
             ERC20BridgeSource.SushiSwap,
@@ -187,6 +188,7 @@ export const SELL_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.Beethovenx,
             ERC20BridgeSource.Curve,
             ERC20BridgeSource.CurveV2,
+            ERC20BridgeSource.Geist,
             ERC20BridgeSource.JetSwap,
             ERC20BridgeSource.MorpheusSwap,
             ERC20BridgeSource.SpiritSwap,
@@ -198,6 +200,7 @@ export const SELL_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.UbeSwap,
             ERC20BridgeSource.SushiSwap,
             ERC20BridgeSource.MultiHop,
+            ERC20BridgeSource.MobiusMoney,
         ]),
         [ChainId.Optimism]: new SourceFilters([
             ERC20BridgeSource.UniswapV3,
@@ -219,7 +222,6 @@ export const BUY_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.Native,
             ERC20BridgeSource.Uniswap,
             ERC20BridgeSource.UniswapV2,
-            ERC20BridgeSource.Eth2Dai,
             ERC20BridgeSource.Kyber,
             ERC20BridgeSource.Curve,
             ERC20BridgeSource.Balancer,
@@ -228,8 +230,6 @@ export const BUY_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.MStable,
             ERC20BridgeSource.Mooniswap,
             ERC20BridgeSource.Shell,
-            ERC20BridgeSource.Swerve,
-            ERC20BridgeSource.SnowSwap,
             ERC20BridgeSource.SushiSwap,
             ERC20BridgeSource.MultiHop,
             ERC20BridgeSource.Dodo,
@@ -238,7 +238,6 @@ export const BUY_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.Lido,
             ERC20BridgeSource.LiquidityProvider,
             ERC20BridgeSource.CryptoCom,
-            ERC20BridgeSource.Linkswap,
             ERC20BridgeSource.MakerPsm,
             ERC20BridgeSource.KyberDmm,
             ERC20BridgeSource.Smoothy,
@@ -275,6 +274,7 @@ export const BUY_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.Mooniswap,
             ERC20BridgeSource.MultiHop,
             ERC20BridgeSource.Nerve,
+            ERC20BridgeSource.Synapse,
             ERC20BridgeSource.PancakeSwap,
             ERC20BridgeSource.PancakeSwapV2,
             ERC20BridgeSource.SushiSwap,
@@ -290,6 +290,7 @@ export const BUY_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.ACryptos,
             ERC20BridgeSource.KyberDmm,
             ERC20BridgeSource.Synapse,
+            ERC20BridgeSource.BiSwap,
         ]),
         [ChainId.Polygon]: new SourceFilters([
             ERC20BridgeSource.SushiSwap,
@@ -331,6 +332,7 @@ export const BUY_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.Beethovenx,
             ERC20BridgeSource.Curve,
             ERC20BridgeSource.CurveV2,
+            ERC20BridgeSource.Geist,
             ERC20BridgeSource.JetSwap,
             ERC20BridgeSource.MorpheusSwap,
             ERC20BridgeSource.SpiritSwap,
@@ -342,6 +344,7 @@ export const BUY_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.UbeSwap,
             ERC20BridgeSource.SushiSwap,
             ERC20BridgeSource.MultiHop,
+            ERC20BridgeSource.MobiusMoney,
         ]),
         [ChainId.Optimism]: new SourceFilters([
             ERC20BridgeSource.UniswapV3,
@@ -428,6 +431,7 @@ export const MAINNET_TOKENS = {
     RenBTC: '0xeb4c2781e4eba804ce9a9803c67d0893436bb27d',
     sBTC: '0xfe18be6b3bd88a2d2a7f928d00292e7a9963cfc6',
     tBTC: '0x8daebade922df735c38c80c7ebd708af50815faa',
+    tBTCv2: '0x18084fbA666a33d37592fA2633fD49a74DD93a88',
     hBTC: '0x0316eb71485b0ab14103307bf65a021042c6d380',
     pBTC: '0x5228a22e72ccc52d415ecfd199f99d0665e7733b',
     bBTC: '0x9be89d2a4cd102d8fecc6bf9da793be995c22541',
@@ -470,10 +474,13 @@ export const MAINNET_TOKENS = {
     alUSD: '0xbc6da0fe9ad5f3b0d58160288917aa56653660e9',
     // Frax ecosystem
     FRAX: '0x853d955acef822db058eb8505911ed77f175b99e',
+    cvxFXS: '0xfeef77d3f69374f66429c91d732a244f074bdf74',
     FXS: '0x3432b6a60d23ca0dfca7761b7ab56459d9c964d0',
     OHM: '0x383518188c0c6d7730d91b2c03a03c837814a899',
     OHMV2: '0x64aa3364f17a4d01c6f1751fd97c2bd3d7e7f1d5',
     BTRFLY: '0xc0d4ceb216b3ba9c3701b291766fdcba977cec3a',
+    // Stargate
+    STG: '0xaf5191b0de278c7286d6c7cc6ab6bb8a73ba2cd6',
     //
     LUSD: '0x5f98805a4e8be255a32880fdec7f6728c6568ba0',
     // Fei Ecosystem
@@ -495,6 +502,7 @@ export const MAINNET_TOKENS = {
     OUSD: '0x2a8e1e676ec238d8a992307b495b45b3feaa5e86',
     agEUR: '0x1a7e4e63778b4f12a199c062f3efdd288afcbce8',
     ibEUR: '0x96e61422b6a9ba0e068b6c5add4ffabc6a4aae27',
+    YFI: '0x0bc529c00c6401aef6d220be8c6ea1667f6ad93e',
 };
 
 export const BSC_TOKENS = {
@@ -512,6 +520,7 @@ export const BSC_TOKENS = {
     renBTC: '0xfce146bf3146100cfe5db4129cf6c82b0ef4ad8c',
     pBTC: '0xed28a457a5a76596ac48d87c0f577020f6ea1c4c',
     nUSD: '0x23b891e5c62e0955ae2bd185990103928ab817b3',
+    BSW: '0x965F527D9159dCe6288a2219DB51fc6Eef120dD1',
 };
 
 export const POLYGON_TOKENS = {
@@ -530,6 +539,7 @@ export const POLYGON_TOKENS = {
     BANANA: '0x5d47baba0d66083c52009271faf3f50dcc01023c',
     WEXPOLY: '0x4c4bf319237d98a30a929a96112effa8da3510eb',
     nUSD: '0xb6c473756050de474286bed418b77aeac39b02af',
+    ANY: '0x6aB6d61428fde76768D7b45D8BFeec19c6eF91A8',
 };
 
 export const AVALANCHE_TOKENS = {
@@ -549,6 +559,7 @@ export const AVALANCHE_TOKENS = {
     nUSD: '0xcfc37a6ab183dd4aed08c204d1c2773c0b1bdf46',
     aWETH: '0x53f7c5869a859f0aec3d334ee8b4cf01e3492f21',
     MIM: '0x130966628846bfd36ff31a822705796e8cb8c18d',
+    MAG: '0x1d60109178C48E4A937D8AB71699D8eBb6F7c5dE',
 };
 
 export const CELO_TOKENS = {
@@ -556,11 +567,11 @@ export const CELO_TOKENS = {
     // Some of these tokens are Optics bridge? tokens which
     // had an issue and migrated from v1 to v2
     WETHv1: '0xe919f65739c26a42616b7b8eedc6b5524d1e3ac4',
-    WETH: '0x122013fd7df1c6f636a5bb8f03108e876548b455',
+    oWETH: '0x122013fd7df1c6f636a5bb8f03108e876548b455',
     WBTC: '0xbaab46e28388d2779e6e31fd00cf0e5ad95e327b',
     cUSD: '0x765de816845861e75a25fca122bb6898b8b1282a',
     // ??
-    WBTCv1: '0xd629eb00deced2a080b7ec630ef6ac117e614f1b',
+    cBTC: '0xd629eb00deced2a080b7ec630ef6ac117e614f1b',
     cETH: '0x2def4285787d58a2f811af24755a8150622f4361',
     UBE: '0x00be915b9dcf56a3cbe739d9b9c202ca692409ec',
     // Moolah
@@ -569,6 +580,22 @@ export const CELO_TOKENS = {
     mCEUR: '0xe273ad7ee11dcfaa87383ad5977ee1504ac07568',
     amCUSD: '0x64defa3544c695db8c535d289d843a189aa26b98',
     MOO: '0x17700282592d6917f6a73d0bf8accf4d578c131e',
+
+    //
+    wBTC: '0x2260fac5e5542a773aa44fbcfedf7c193bc2c599',
+    wETH: '0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2',
+    wBTCO: '0xbe50a3013a1c94768a1abb78c3cb79ab28fc1ace',
+    pUSDC: '0xcc82628f6a8defa1e2b0ad7ed448bef3647f7941',
+    cUSDC: '0x2a3684e9dc20b857375ea04235f2f7edbe818fa7',
+    cUSDC_V2: '0xef4229c8c3250c675f21bcefa42f58efbff6002a',
+    pUSDC_V2: '0x1bfc26ce035c368503fae319cc2596716428ca44',
+    pUSD: '0xeadf4a7168a82d30ba0619e64d5bcf5b30b45226',
+    pCELO: '0x301a61d01a63c8d670c2b8a43f37d12ef181f997',
+    aaUSDC: '0xb70e0a782b058bfdb0d109a3599bec1f19328e36',
+    asUSDC: '0xcd7d7ff64746c1909e44db8e95331f9316478817',
+    mcUSDT: '0xcfffe0c89a779c09df3df5624f54cdf7ef5fdd5d',
+    mcUSDC: '0x93db49be12b864019da9cb147ba75cdc0506190e',
+    DAI: '0x90ca507a5d4458a4c6c6249d186b6dcb02a5bccd',
 };
 
 export const FANTOM_TOKENS = {
@@ -578,6 +605,7 @@ export const FANTOM_TOKENS = {
     DAI: '0x8d11ec38a3eb5e956b052f67da8bdc9bef8abf3e',
     fUSDT: '0x049d68029688eabf473097a2fc38ef61633a3c7a',
     WBTC: '0x321162cd933e2be498cd2267a90534a804051b11',
+    WCRV: '0x1e4f97b9f9f913c46f1632781732927b9019c68b',
     renBTC: '0xdbf31df14b66535af65aac99c32e9ea844e14501',
     MIM: '0x82f0b8b456c1a451378467398982d4834b6829c1',
     nUSD: '0xed2a7edd7413021d440b09d654f3b87712abab66',
@@ -586,6 +614,15 @@ export const FANTOM_TOKENS = {
     gUSDC: '0xe578c856933d8e1082740bf7661e379aa2a30b26',
     gDAI: '0x07e6332dd090d287d3489245038daf987955dcfb',
     FRAX: '0xdc301622e621166bd8e82f2ca0a26c13ad0be355',
+    gFTM: '0x39b3bd37208cbade74d0fcbdbb12d606295b430a',
+    gETH: '0x25c130b2624cf12a4ea30143ef50c5d68cefa22f',
+    gWBTC: '0x38aca5484b8603373acc6961ecd57a6a594510a3',
+    gCRV: '0x690754a168b022331caa2467207c61919b3f8a98',
+    gMIM: '0xc664fc7b8487a3e10824cda768c1d239f2403bbe',
+};
+
+export const GEIST_FANTOM_POOLS = {
+    lendingPool: '0x9fad24f572045c7869117160a571b2e50b10d068',
 };
 
 export const OPTIMISM_TOKENS = {
@@ -631,6 +668,8 @@ export const CURVE_POOLS = {
     USDP: '0x42d7025938bec20b69cbae5a77421082407f053a', // usdp
     ib: '0x2dded6da1bf5dbdf597c45fcfaa3194e53ecfeaf', // iron bank
     link: '0xf178c0b5bb7e7abf4e12a4838c7b7c5ba2c623c0', // link
+    btrflyweth: '0xf43b15ab692fde1f9c24a9fce700adcc809d5391', // redacted cartel
+    stgusdc: '0x3211c6cbef1429da3d0d58494938299c92ad5860', // stargate
     // StableSwap "open pools" (crv.finance)
     TUSD: '0xecd5e75afb02efa118af914515d6521aabd189f1',
     STABLEx: '0x3252efd4ea2d6c78091a1f43982ee2c3659cc3d1',
@@ -640,6 +679,7 @@ export const CURVE_POOLS = {
     BUSD: '0x4807862aa8b2bf68830e4c8dc86d0e9a998e085a',
     DSU3CRV: '0x6ec80df362d7042c50d4469bcfbc174c9dd9109a',
     cvxcrv: '0x9d0464996170c6b9e75eed71c68b99ddedf279e8',
+    cvxfxs: '0xd658a338613198204dca1143ac3f01a722b5d94a',
     mim: '0x5a6a4d54456819380173272a5e8e9b9904bdf41b',
     eurt: '0xfd5db7463a3ab53fd211b4af195c5bccc1a03890',
     ethcrv: '0x8301ae4fc9c624d1d396cbdaa1ed877821d7c511',
@@ -653,6 +693,7 @@ export const CURVE_POOLS = {
     d3pool: '0xbaaa1f5dba42c3389bdbc2c9d2de134f5cd0dc89',
     triEURpool: '0xb9446c4ef5ebe66268da6700d26f96273de3d571',
     ibEURsEUR: '0x19b080fe1ffa0553469d20ca36219f17fcf03859',
+    wethyfi: '0xc26b89a667578ec7b3f11b2f98d6fd15c07c54ba',
 };
 
 export const CURVE_V2_POOLS = {
@@ -696,28 +737,13 @@ export const CURVE_OPTIMISM_POOLS = {
     tri: '0x1337bedc9d22ecbe766df105c9623922a27963ec',
 };
 
-export const SWERVE_POOLS = {
-    y: '0x329239599afb305da0a2ec69c58f8a6697f9f88d',
-};
-
-export const SNOWSWAP_POOLS = {
-    yUSD: '0xbf7ccd6c446acfcc5df023043f2167b62e81899b',
-    yVault: '0x4571753311e37ddb44faa8fb78a6df9a6e3c6c0b',
-    // POOL Disabled as it uses WETH over ETH
-    // There is a conflict with Curve and SnowSwap
-    // where Curve uses ETH and SnowSwap uses WETH
-    // To re-enable this we need to flag an WETH
-    // unwrap or not
-    // eth: '0x16bea2e63adade5984298d53a4d4d9c09e278192',
-};
-
 export const SMOOTHY_POOLS = {
     syUSD: '0xe5859f4efc09027a9b718781dcb2c6910cac6e91',
 };
 
 export const SADDLE_POOLS = {
-    stables: '0x3911f80530595fbd01ab1516ab61255d75aeb066',
-    bitcoins: '0x4f6a43ad7cba042606decaca730d4ce0a57ac62e',
+    stablesV2: '0xaCb83E0633d6605c5001e2Ab59EF3C745547C8C7',
+    bitcoinsV2: '0xdf3309771d2BF82cb2B6C56F9f5365C8bD97c4f2',
     alETH: '0xa6018520eaacc06c30ff2e1b3ee2c7c22e64196a',
     d4: '0xc69ddcd4dfef25d8a793241834d4cc4b3668ead6',
 };
@@ -780,6 +806,14 @@ export const FIREBIRDONESWAP_BSC_POOLS = {
 export const FIREBIRDONESWAP_POLYGON_POOLS = {
     oneswap: '0x01c9475dbd36e46d1961572c8de24b74616bae9e',
 };
+export const MOBIUSMONEY_CELO_POOLS = {
+    usdc_optics_v2: '0x9906589ea8fd27504974b7e8201df5bbde986b03',
+    dai_optics_v2: '0xf3f65dfe0c8c8f2986da0fec159abe6fd4e700b4',
+    weth_optics_v2: '0x74ef28d635c6c5800dd3cd62d4c4f8752daacb09',
+    pusdc_optics_v2: '0xcce0d62ce14fb3e4363eb92db37ff3630836c252',
+    usdc_allbridge_solana: '0x63c1914bf00a9b395a2bf89aada55a5615a3656e',
+    usdc_poly_optics: '0xa2f0e57d4ceacf025e81c76f28b9ad6e9fbe8735',
+};
 
 export const ACRYPTOS_POOLS = {
     acs4usd: '0xb3f0c9ea1f05e312093fdb031e789a756659b0ac',
@@ -829,6 +863,7 @@ export const DEFAULT_INTERMEDIATE_TOKENS_BY_CHAIN_ID = valueByChainId<string[]>(
             AVALANCHE_TOKENS.nUSD,
             AVALANCHE_TOKENS.nETH,
             AVALANCHE_TOKENS.aWETH,
+            AVALANCHE_TOKENS.MIM,
         ],
         [ChainId.Fantom]: [
             FANTOM_TOKENS.WFTM,
@@ -839,7 +874,13 @@ export const DEFAULT_INTERMEDIATE_TOKENS_BY_CHAIN_ID = valueByChainId<string[]>(
             FANTOM_TOKENS.nETH,
             FANTOM_TOKENS.MIM,
         ],
-        [ChainId.Celo]: [CELO_TOKENS.WCELO, CELO_TOKENS.mCUSD, CELO_TOKENS.WETH, CELO_TOKENS.amCUSD, CELO_TOKENS.WBTC],
+        [ChainId.Celo]: [
+            CELO_TOKENS.WCELO,
+            CELO_TOKENS.mCUSD,
+            CELO_TOKENS.WETHv1,
+            CELO_TOKENS.amCUSD,
+            CELO_TOKENS.WBTC,
+        ],
         [ChainId.Optimism]: [
             OPTIMISM_TOKENS.WETH,
             OPTIMISM_TOKENS.DAI,
@@ -864,6 +905,8 @@ export const DEFAULT_TOKEN_ADJACENCY_GRAPH_BY_CHAIN_ID = valueByChainId<TokenAdj
                 builder.add(MAINNET_TOKENS.MIR, MAINNET_TOKENS.UST);
                 // Convex and Curve
                 builder.add(MAINNET_TOKENS.cvxCRV, MAINNET_TOKENS.CRV).add(MAINNET_TOKENS.CRV, MAINNET_TOKENS.cvxCRV);
+                // Convex and FXS
+                builder.add(MAINNET_TOKENS.cvxFXS, MAINNET_TOKENS.FXS).add(MAINNET_TOKENS.FXS, MAINNET_TOKENS.cvxFXS);
                 // FEI TRIBE liquid in UniV2
                 builder.add(MAINNET_TOKENS.FEI, MAINNET_TOKENS.TRIBE).add(MAINNET_TOKENS.TRIBE, MAINNET_TOKENS.FEI);
                 // FRAX ecosystem
@@ -881,15 +924,21 @@ export const DEFAULT_TOKEN_ADJACENCY_GRAPH_BY_CHAIN_ID = valueByChainId<TokenAdj
         }).build(),
         [ChainId.Polygon]: new TokenAdjacencyGraphBuilder({
             default: DEFAULT_INTERMEDIATE_TOKENS_BY_CHAIN_ID[ChainId.Polygon],
-        }).build(),
+        })
+            .tap(builder => {
+                builder.add(POLYGON_TOKENS.QUICK, POLYGON_TOKENS.ANY).add(POLYGON_TOKENS.ANY, POLYGON_TOKENS.QUICK);
+            })
+            .build(),
         [ChainId.Avalanche]: new TokenAdjacencyGraphBuilder({
             default: DEFAULT_INTERMEDIATE_TOKENS_BY_CHAIN_ID[ChainId.Avalanche],
         })
             .tap(builder => {
-                // Synape nETH/aWETH pool
+                // Synapse nETH/aWETH pool
                 builder
                     .add(AVALANCHE_TOKENS.aWETH, AVALANCHE_TOKENS.nETH)
                     .add(AVALANCHE_TOKENS.nETH, AVALANCHE_TOKENS.aWETH);
+                // Trader Joe MAG/MIM pool
+                builder.add(AVALANCHE_TOKENS.MIM, AVALANCHE_TOKENS.MAG).add(AVALANCHE_TOKENS.MAG, AVALANCHE_TOKENS.MIM);
             })
             .build(),
         [ChainId.Fantom]: new TokenAdjacencyGraphBuilder({
@@ -1004,6 +1053,25 @@ const createCurveV2MetaTriPool = (info: { tokens: string[]; pool: string; gasSch
     gasSchedule: info.gasSchedule,
 });
 
+const createCurveFactoryCryptoExchangePool = (info: { tokens: string[]; pool: string; gasSchedule: number }) => ({
+    exchangeFunctionSelector: CurveFunctionSelectors.exchange_underlying_uint256,
+    sellQuoteFunctionSelector: CurveFunctionSelectors.get_dy_uint256,
+    buyQuoteFunctionSelector: CurveFunctionSelectors.None,
+    tokens: info.tokens,
+    metaTokens: undefined,
+    poolAddress: info.pool,
+    gasSchedule: info.gasSchedule,
+});
+const MOBIUSMONEY_CELO_SHARED: CurveInfo = {
+    exchangeFunctionSelector: CurveFunctionSelectors.swap,
+    sellQuoteFunctionSelector: CurveFunctionSelectors.calculateSwap,
+    buyQuoteFunctionSelector: CurveFunctionSelectors.None,
+    metaTokens: undefined,
+    gasSchedule: 150e3,
+    poolAddress: NULL_ADDRESS,
+    tokens: [],
+};
+
 /**
  * Mainnet Curve configuration
  * The tokens are in order of their index, which each curve defines
@@ -1270,6 +1338,26 @@ export const CURVE_MAINNET_INFOS: { [name: string]: CurveInfo } = {
         pool: CURVE_POOLS.ibEURsEUR,
         gasSchedule: 176e3,
     }),
+    [CURVE_POOLS.btrflyweth]: createCurveFactoryCryptoExchangePool({
+        tokens: [MAINNET_TOKENS.WETH, MAINNET_TOKENS.BTRFLY],
+        pool: CURVE_POOLS.btrflyweth,
+        gasSchedule: 250e3,
+    }),
+    [CURVE_POOLS.wethyfi]: createCurveFactoryCryptoExchangePool({
+        tokens: [MAINNET_TOKENS.WETH, MAINNET_TOKENS.YFI],
+        pool: CURVE_POOLS.wethyfi,
+        gasSchedule: 250e3,
+    }),
+    [CURVE_POOLS.stgusdc]: createCurveFactoryCryptoExchangePool({
+        tokens: [MAINNET_TOKENS.STG, MAINNET_TOKENS.USDC],
+        pool: CURVE_POOLS.stgusdc,
+        gasSchedule: 250e3,
+    }),
+    [CURVE_POOLS.cvxfxs]: createCurveFactoryCryptoExchangePool({
+        tokens: [MAINNET_TOKENS.FXS, MAINNET_TOKENS.cvxFXS],
+        pool: CURVE_POOLS.cvxfxs,
+        gasSchedule: 390e3,
+    }),
 };
 
 export const CURVE_V2_MAINNET_INFOS: { [name: string]: CurveInfo } = {
@@ -1407,38 +1495,6 @@ export const CURVE_OPTIMISM_INFOS: { [name: string]: CurveInfo } = {
     }),
 };
 
-export const SWERVE_MAINNET_INFOS: { [name: string]: CurveInfo } = {
-    [SWERVE_POOLS.y]: createCurveExchangePool({
-        tokens: [MAINNET_TOKENS.DAI, MAINNET_TOKENS.USDC, MAINNET_TOKENS.USDT, MAINNET_TOKENS.TUSD],
-        pool: SWERVE_POOLS.y,
-        gasSchedule: 140e3,
-    }),
-};
-
-export const SNOWSWAP_MAINNET_INFOS: { [name: string]: CurveInfo } = {
-    [SNOWSWAP_POOLS.yUSD]: createCurveExchangePool({
-        tokens: [MAINNET_TOKENS.yUSD, MAINNET_TOKENS.ybCRV],
-        pool: SNOWSWAP_POOLS.yUSD,
-        gasSchedule: 990e3,
-    }),
-    [SNOWSWAP_POOLS.yUSD]: createCurveExchangeUnderlyingPool({
-        tokens: [MAINNET_TOKENS.yCRV, MAINNET_TOKENS.bCRV],
-        pool: SNOWSWAP_POOLS.yUSD,
-        gasSchedule: 990e3,
-    }),
-    [SNOWSWAP_POOLS.yVault]: createCurveExchangePool({
-        tokens: [MAINNET_TOKENS.yDAI, MAINNET_TOKENS.yUSDC, MAINNET_TOKENS.yUSDT, MAINNET_TOKENS.yTUSD],
-        pool: SNOWSWAP_POOLS.yVault,
-        gasSchedule: 1490e3,
-    }),
-    // Unsupported due to collision with WETH and ETH with execution using MixinCurve
-    // [SNOWSWAP_POOLS.eth]: createCurveExchangePool({
-    //     tokens: [MAINNET_TOKENS.WETH, MAINNET_TOKENS.vETH, MAINNET_TOKENS.ankrETH, MAINNET_TOKENS.crETH],
-    //     pool: SNOWSWAP_POOLS.eth,
-    //     gasSchedule: 990e3,
-    // }),
-};
-
 export const BELT_BSC_INFOS: { [name: string]: CurveInfo } = {
     [BELT_POOLS.vPool]: createCurveExchangeUnderlyingPool({
         tokens: [BSC_TOKENS.DAI, BSC_TOKENS.USDC, BSC_TOKENS.USDT, BSC_TOKENS.BUSD],
@@ -1465,21 +1521,21 @@ export const XSIGMA_MAINNET_INFOS: { [name: string]: CurveInfo } = {
 
 // Curve-like sources using custom selectors
 export const SADDLE_MAINNET_INFOS: { [name: string]: CurveInfo } = {
-    [SADDLE_POOLS.stables]: {
+    [SADDLE_POOLS.stablesV2]: {
         exchangeFunctionSelector: CurveFunctionSelectors.swap,
         sellQuoteFunctionSelector: CurveFunctionSelectors.calculateSwap,
         buyQuoteFunctionSelector: CurveFunctionSelectors.None,
-        poolAddress: SADDLE_POOLS.stables,
+        poolAddress: SADDLE_POOLS.stablesV2,
         tokens: [MAINNET_TOKENS.DAI, MAINNET_TOKENS.USDC, MAINNET_TOKENS.USDT],
         metaTokens: undefined,
         gasSchedule: 150e3,
     },
-    [SADDLE_POOLS.bitcoins]: {
+    [SADDLE_POOLS.bitcoinsV2]: {
         exchangeFunctionSelector: CurveFunctionSelectors.swap,
         sellQuoteFunctionSelector: CurveFunctionSelectors.calculateSwap,
         buyQuoteFunctionSelector: CurveFunctionSelectors.None,
-        poolAddress: SADDLE_POOLS.bitcoins,
-        tokens: [MAINNET_TOKENS.tBTC, MAINNET_TOKENS.WBTC, MAINNET_TOKENS.RenBTC, MAINNET_TOKENS.sBTC],
+        poolAddress: SADDLE_POOLS.bitcoinsV2,
+        tokens: [MAINNET_TOKENS.WBTC, MAINNET_TOKENS.RenBTC, MAINNET_TOKENS.sBTC],
         metaTokens: undefined,
         gasSchedule: 150e3,
     },
@@ -1665,6 +1721,39 @@ export const FIREBIRDONESWAP_POLYGON_INFOS: { [name: string]: CurveInfo } = {
     },
 };
 
+export const MOBIUSMONEY_CELO_INFOS: { [name: string]: CurveInfo } = {
+    [MOBIUSMONEY_CELO_POOLS.usdc_optics_v2]: {
+        ...MOBIUSMONEY_CELO_SHARED,
+        poolAddress: MOBIUSMONEY_CELO_POOLS.usdc_optics_v2,
+        tokens: [CELO_TOKENS.cUSD, CELO_TOKENS.cUSDC_V2],
+    },
+    [MOBIUSMONEY_CELO_POOLS.weth_optics_v2]: {
+        ...MOBIUSMONEY_CELO_SHARED,
+        poolAddress: MOBIUSMONEY_CELO_POOLS.weth_optics_v2,
+        tokens: [CELO_TOKENS.cETH, CELO_TOKENS.oWETH],
+    },
+    [MOBIUSMONEY_CELO_POOLS.pusdc_optics_v2]: {
+        ...MOBIUSMONEY_CELO_SHARED,
+        poolAddress: MOBIUSMONEY_CELO_POOLS.pusdc_optics_v2,
+        tokens: [CELO_TOKENS.cUSD, CELO_TOKENS.pUSDC_V2],
+    },
+    [MOBIUSMONEY_CELO_POOLS.usdc_allbridge_solana]: {
+        ...MOBIUSMONEY_CELO_SHARED,
+        poolAddress: MOBIUSMONEY_CELO_POOLS.usdc_allbridge_solana,
+        tokens: [CELO_TOKENS.cUSD, CELO_TOKENS.asUSDC],
+    },
+    [MOBIUSMONEY_CELO_POOLS.usdc_poly_optics]: {
+        ...MOBIUSMONEY_CELO_SHARED,
+        poolAddress: MOBIUSMONEY_CELO_POOLS.usdc_poly_optics,
+        tokens: [CELO_TOKENS.cUSD, CELO_TOKENS.pUSD],
+    },
+    [MOBIUSMONEY_CELO_POOLS.dai_optics_v2]: {
+        ...MOBIUSMONEY_CELO_SHARED,
+        poolAddress: MOBIUSMONEY_CELO_POOLS.dai_optics_v2,
+        tokens: [CELO_TOKENS.cUSD, CELO_TOKENS.DAI],
+    },
+};
+
 const ACRYPTOS_ACS4USD_POOL_BSC_TOKENS = [BSC_TOKENS.BUSD, BSC_TOKENS.USDT, BSC_TOKENS.DAI, BSC_TOKENS.USDC];
 
 const createAcryptosMetaUsdPool = (info: { tokens: string[]; pool: string; gasSchedule: number }) => ({
@@ -1794,11 +1883,6 @@ export const CRYPTO_COM_ROUTER_BY_CHAIN_ID = valueByChainId<string>(
     NULL_ADDRESS,
 );
 
-export const LINKSWAP_ROUTER_BY_CHAIN_ID = valueByChainId<string>(
-    { [ChainId.Mainnet]: '0xa7ece0911fe8c60bff9e99f8fafcdbe56e07aff1' },
-    NULL_ADDRESS,
-);
-
 export const SHIBASWAP_ROUTER_BY_CHAIN_ID = valueByChainId<string>(
     {
         [ChainId.Mainnet]: '0x03f7724180aa6b939894b5ca4314783b0b36b329',
@@ -1859,6 +1943,13 @@ export const KYBER_DMM_ROUTER_BY_CHAIN_ID = valueByChainId<string>(
     NULL_ADDRESS,
 );
 
+export const BISWAP_ROUTER_BY_CHAIN_ID = valueByChainId<string>(
+    {
+        [ChainId.BSC]: '0x3a6d8ca21d1cf76f653a67577fa0d27453350dd8',
+    },
+    NULL_ADDRESS,
+);
+
 export const MOONISWAP_REGISTRIES_BY_CHAIN_ID = valueByChainId(
     {
         [ChainId.Mainnet]: ['0xbaf9a5d4b0052359326a6cdab54babaa3a3a9643'],
@@ -1996,6 +2087,13 @@ export const COMPONENT_POOLS_BY_CHAIN_ID = valueByChainId(
     },
 );
 
+export const GEIST_INFO_ADDRESS_BY_CHAIN_ID = valueByChainId<string>(
+    {
+        [ChainId.Fantom]: '0xd8321aa83fb0a4ecd6348d4577431310a6e0814d',
+    },
+    NULL_ADDRESS,
+);
+
 export const BALANCER_V2_VAULT_ADDRESS_BY_CHAIN = valueByChainId<string>(
     {
         [ChainId.Mainnet]: '0xba12222222228d8ba445958a75a0704d566bf2c8',
@@ -2028,11 +2126,12 @@ export const BALANCER_SUBGRAPH_URL = 'https://api.thegraph.com/subgraphs/name/ba
 export const BALANCER_TOP_POOLS_FETCHED = 250;
 export const BALANCER_MAX_POOLS_FETCHED = 3;
 
-export const BALANCER_V2_SUBGRAPH_URL_BY_CHAIN = valueByChainId<string>(
+export const BALANCER_V2_SUBGRAPH_URL_BY_CHAIN = valueByChainId(
     {
+        [ChainId.Mainnet]: 'https://api.thegraph.com/subgraphs/name/balancer-labs/balancer-v2',
         [ChainId.Polygon]: 'https://api.thegraph.com/subgraphs/name/balancer-labs/balancer-polygon-v2',
     },
-    'https://api.thegraph.com/subgraphs/name/balancer-labs/balancer-v2',
+    null,
 );
 
 export const BEETHOVEN_X_SUBGRAPH_URL_BY_CHAIN = valueByChainId<string>(
@@ -2045,19 +2144,19 @@ export const BEETHOVEN_X_SUBGRAPH_URL_BY_CHAIN = valueByChainId<string>(
 export const UNISWAPV3_CONFIG_BY_CHAIN_ID = valueByChainId(
     {
         [ChainId.Mainnet]: {
-            quoter: '0xb27308f9f90d607463bb33ea1bebb41c27ce5ab6',
+            quoter: '0x61ffe014ba17989e743c5f6cb21bf9697530b21e',
             router: '0xe592427a0aece92de3edee1f18e0157c05861564',
         },
         [ChainId.Ropsten]: {
-            quoter: '0x2f9e608fd881861b8916257b76613cb22ee0652c',
-            router: '0x03782388516e94fcd4c18666303601a12aa729ea',
+            quoter: '0x61ffe014ba17989e743c5f6cb21bf9697530b21e',
+            router: '0xe592427a0aece92de3edee1f18e0157c05861564',
         },
         [ChainId.Polygon]: {
-            quoter: '0xb27308f9f90d607463bb33ea1bebb41c27ce5ab6',
+            quoter: '0x61ffe014ba17989e743c5f6cb21bf9697530b21e',
             router: '0xe592427a0aece92de3edee1f18e0157c05861564',
         },
         [ChainId.Optimism]: {
-            quoter: '0xb27308f9f90d607463bb33ea1bebb41c27ce5ab6',
+            quoter: '0x61ffe014ba17989e743c5f6cb21bf9697530b21e',
             router: '0xe592427a0aece92de3edee1f18e0157c05861564',
         },
     },
@@ -2282,12 +2381,9 @@ export const DEFAULT_GAS_SCHEDULE: Required<FeeSchedule> = {
     [ERC20BridgeSource.LiquidityProvider]: fillData => {
         return (fillData as LiquidityProviderFillData).gasCost || 100e3;
     },
-    [ERC20BridgeSource.Eth2Dai]: () => 400e3,
     [ERC20BridgeSource.Kyber]: () => 450e3,
     [ERC20BridgeSource.Curve]: fillData => (fillData as CurveFillData).pool.gasSchedule,
     [ERC20BridgeSource.CurveV2]: fillData => (fillData as CurveFillData).pool.gasSchedule,
-    [ERC20BridgeSource.Swerve]: fillData => (fillData as CurveFillData).pool.gasSchedule,
-    [ERC20BridgeSource.SnowSwap]: fillData => (fillData as CurveFillData).pool.gasSchedule,
     [ERC20BridgeSource.Nerve]: fillData => (fillData as CurveFillData).pool.gasSchedule,
     [ERC20BridgeSource.Synapse]: fillData => (fillData as CurveFillData).pool.gasSchedule,
     [ERC20BridgeSource.Belt]: fillData => (fillData as CurveFillData).pool.gasSchedule,
@@ -2297,14 +2393,17 @@ export const DEFAULT_GAS_SCHEDULE: Required<FeeSchedule> = {
     [ERC20BridgeSource.IronSwap]: fillData => (fillData as CurveFillData).pool.gasSchedule,
     [ERC20BridgeSource.XSigma]: fillData => (fillData as CurveFillData).pool.gasSchedule,
     [ERC20BridgeSource.FirebirdOneSwap]: fillData => (fillData as CurveFillData).pool.gasSchedule,
+    [ERC20BridgeSource.MobiusMoney]: fillData => (fillData as CurveFillData).pool.gasSchedule,
     [ERC20BridgeSource.MultiBridge]: () => 350e3,
     [ERC20BridgeSource.UniswapV2]: uniswapV2CloneGasSchedule,
     [ERC20BridgeSource.SushiSwap]: uniswapV2CloneGasSchedule,
     [ERC20BridgeSource.CryptoCom]: uniswapV2CloneGasSchedule,
-    [ERC20BridgeSource.Linkswap]: uniswapV2CloneGasSchedule,
     [ERC20BridgeSource.ShibaSwap]: uniswapV2CloneGasSchedule,
+    [ERC20BridgeSource.BiSwap]: uniswapV2CloneGasSchedule,
     [ERC20BridgeSource.Balancer]: () => 120e3,
-    [ERC20BridgeSource.BalancerV2]: () => 100e3,
+    [ERC20BridgeSource.BalancerV2]: (fillData?: FillData) => {
+        return 100e3 + ((fillData as BalancerV2BatchSwapFillData).swapSteps.length - 1) * 50e3;
+    },
     [ERC20BridgeSource.Cream]: () => 120e3,
     [ERC20BridgeSource.MStable]: () => 200e3,
     [ERC20BridgeSource.MakerPsm]: (fillData?: FillData) => {
@@ -2349,11 +2448,34 @@ export const DEFAULT_GAS_SCHEDULE: Required<FeeSchedule> = {
         return gas;
     },
     [ERC20BridgeSource.UniswapV3]: (fillData?: FillData) => {
-        let gas = 100e3;
-        const path = (fillData as UniswapV3FillData).tokenAddressPath;
-        if (path.length > 2) {
-            gas += (path.length - 2) * 32e3; // +32k for each hop.
+        const uniFillData = fillData as UniswapV3FillData | FinalUniswapV3FillData;
+        // NOTE: This base value was heuristically chosen by looking at how much it generally
+        // underestimated gas usage
+        const base = 34e3; // 34k base
+        let gas = base;
+        if (isFinalUniswapV3FillData(uniFillData)) {
+            gas += uniFillData.gasUsed;
+        } else {
+            // NOTE: We don't actually know which of the paths would be used in the router
+            // therefore we estimate using the median of gas usage returned from UniswapV3
+            // For the best case scenario (least amount of hops & ticks) this will
+            // overestimate the gas usage
+            const pathAmountsWithGasUsed = uniFillData.pathAmounts.filter(p => p.gasUsed > 0);
+            const medianGasUsedForPath =
+                pathAmountsWithGasUsed[Math.floor(pathAmountsWithGasUsed.length / 2)]?.gasUsed ?? 0;
+            gas += medianGasUsedForPath;
         }
+
+        // If we for some reason could not read `gasUsed` when sampling
+        // fall back to legacy gas estimation
+        if (gas === base) {
+            gas = 100e3;
+            const path = uniFillData.tokenAddressPath;
+            if (path.length > 2) {
+                gas += (path.length - 2) * 32e3; // +32k for each hop.
+            }
+        }
+
         return gas;
     },
     [ERC20BridgeSource.Lido]: () => 226e3,
@@ -2362,6 +2484,10 @@ export const DEFAULT_GAS_SCHEDULE: Required<FeeSchedule> = {
         // NOTE: The Aave deposit method is more expensive than the withdraw
         return aaveFillData.takerToken === aaveFillData.underlyingToken ? 400e3 : 300e3;
     },
+    [ERC20BridgeSource.Geist]: (fillData?: FillData) => {
+        const geistFillData = fillData as GeistFillData;
+        return geistFillData.takerToken === geistFillData.underlyingToken ? 400e3 : 300e3;
+    },
     [ERC20BridgeSource.Compound]: (fillData?: FillData) => {
         // NOTE: cETH is handled differently than other cTokens
         const wethAddress = NATIVE_FEE_TOKEN_BY_CHAIN_ID[ChainId.Mainnet];

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

@@ -175,9 +175,9 @@ export function dexSamplesToFills(
         const { source, fillData } = sample;
         const input = sample.input.minus(prevSample ? prevSample.input : 0);
         const output = sample.output.minus(prevSample ? prevSample.output : 0);
-        const fee = fees[source] === undefined ? 0 : fees[source]!(sample.fillData) || 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,

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

@@ -0,0 +1,36 @@
+import { FANTOM_TOKENS, GEIST_FANTOM_POOLS } from './constants';
+import { GeistInfo } from './types';
+
+const gTokenToUnderlyingToken = new Map<string, string>([
+    [FANTOM_TOKENS.gFTM, FANTOM_TOKENS.WFTM],
+    [FANTOM_TOKENS.gfUSDT, FANTOM_TOKENS.fUSDT],
+    [FANTOM_TOKENS.gDAI, FANTOM_TOKENS.DAI],
+    [FANTOM_TOKENS.gUSDC, FANTOM_TOKENS.USDC],
+    [FANTOM_TOKENS.gETH, FANTOM_TOKENS.WETH],
+    [FANTOM_TOKENS.gWBTC, FANTOM_TOKENS.WBTC],
+    [FANTOM_TOKENS.gCRV, FANTOM_TOKENS.WCRV],
+    [FANTOM_TOKENS.gMIM, FANTOM_TOKENS.MIM],
+]);
+
+/**
+ * Returns GeistInfo for a certain pair if that pair exists on Geist
+ */
+export function getGeistInfoForPair(takerToken: string, makerToken: string): GeistInfo | undefined {
+    let gToken;
+    let underlyingToken;
+    if (gTokenToUnderlyingToken.get(takerToken) === makerToken) {
+        gToken = takerToken;
+        underlyingToken = makerToken;
+    } else if (gTokenToUnderlyingToken.get(makerToken) === takerToken) {
+        gToken = makerToken;
+        underlyingToken = takerToken;
+    } else {
+        return undefined;
+    }
+
+    return {
+        lendingPool: GEIST_FANTOM_POOLS.lendingPool,
+        gToken,
+        underlyingToken,
+    };
+}

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

@@ -4,12 +4,15 @@ import * as _ from 'lodash';
 
 import { DEFAULT_INFO_LOGGER, INVALID_SIGNATURE } from '../../constants';
 import {
+    AltRfqMakerAssetOfferings,
     AssetSwapperContractAddresses,
     MarketOperation,
     NativeOrderWithFillableAmounts,
     SignedNativeOrder,
 } from '../../types';
-import { QuoteRequestor } from '../quote_requestor';
+import { getAltMarketInfo } from '../alt_mm_implementation_utils';
+import { QuoteRequestor, V4RFQIndicativeQuoteMM } from '../quote_requestor';
+import { toSignedNativeOrder } from '../rfq_client_mappers';
 import {
     getNativeAdjustedFillableAmountsFromMakerAmount,
     getNativeAdjustedFillableAmountsFromTakerAmount,
@@ -42,7 +45,7 @@ import { createFills } from './fills';
 import { getBestTwoHopQuote } from './multihop_utils';
 import { createOrdersFromTwoHopSample } from './orders';
 import { Path, PathPenaltyOpts } from './path';
-import { fillsToSortedPaths, findOptimalPathJSAsync, findOptimalRustPathFromSamples } from './path_optimizer';
+import { findOptimalPathJSAsync, findOptimalRustPathFromSamples } from './path_optimizer';
 import { DexOrderSampler, getSampleAmounts } from './sampler';
 import { SourceFilters } from './source_filters';
 import {
@@ -241,6 +244,7 @@ export class MarketOperationUtils {
                 dexQuotes,
             },
             isRfqSupported,
+            blockNumber: blockNumber.toNumber(),
         };
     }
 
@@ -269,6 +273,7 @@ export class MarketOperationUtils {
 
         // Call the sampler contract.
         const samplerPromise = this._sampler.executeAsync(
+            this._sampler.getBlockNumber(),
             this._sampler.getTokenDecimals([makerToken, takerToken]),
             // Get native order fillable amounts.
             this._sampler.getLimitOrderFillableMakerAmounts(nativeOrders, this.contractAddresses.exchangeProxy),
@@ -302,6 +307,7 @@ export class MarketOperationUtils {
 
         const [
             [
+                blockNumber,
                 tokenDecimals,
                 orderFillableMakerAmounts,
                 ethToMakerAssetRate,
@@ -342,6 +348,7 @@ export class MarketOperationUtils {
                 dexQuotes,
             },
             isRfqSupported,
+            blockNumber: blockNumber.toNumber(),
         };
     }
 
@@ -372,6 +379,7 @@ export class MarketOperationUtils {
         const feeSourceFilters = this._feeSources.exclude(_opts.excludedFeeSources);
 
         const ops = [
+            this._sampler.getBlockNumber(),
             ...batchNativeOrders.map(orders =>
                 this._sampler.getLimitOrderFillableMakerAmounts(orders, this.contractAddresses.exchangeProxy),
             ),
@@ -396,13 +404,15 @@ export class MarketOperationUtils {
             ),
         ];
 
-        const executeResults = await this._sampler.executeBatchAsync(ops);
+        const [blockNumberRaw, ...executeResults] = await this._sampler.executeBatchAsync(ops);
         const batchOrderFillableMakerAmounts = executeResults.splice(0, batchNativeOrders.length) as BigNumber[][];
         const batchEthToTakerAssetRate = executeResults.splice(0, batchNativeOrders.length) as BigNumber[];
         const batchDexQuotes = executeResults.splice(0, batchNativeOrders.length) as DexSample[][][];
         const batchTokenDecimals = executeResults.splice(0, batchNativeOrders.length) as number[][];
         const inputAmountPerEth = ZERO_AMOUNT;
 
+        const blockNumber: number = (blockNumberRaw as BigNumber).toNumber();
+
         return Promise.all(
             batchNativeOrders.map(async (nativeOrders, i) => {
                 if (nativeOrders.length === 0) {
@@ -435,6 +445,7 @@ export class MarketOperationUtils {
                                 twoHopQuotes: [],
                             },
                             isRfqSupported: false,
+                            blockNumber,
                         },
                         {
                             bridgeSlippage: _opts.bridgeSlippage,
@@ -493,18 +504,6 @@ export class MarketOperationUtils {
                 } as NativeOrderWithFillableAmounts),
         );
 
-        // Convert native orders and dex quotes into `Fill` objects.
-        const fills = createFills({
-            side,
-            orders: [...nativeOrders, ...augmentedRfqtIndicativeQuotes],
-            dexQuotes,
-            targetInput: inputAmount,
-            outputAmountPerEth,
-            inputAmountPerEth,
-            excludedSources: opts.excludedSources,
-            feeSchedule: opts.feeSchedule,
-        });
-
         // Find the optimal path.
         const penaltyOpts: PathPenaltyOpts = {
             outputAmountPerEth,
@@ -517,13 +516,11 @@ export class MarketOperationUtils {
         const takerAmountPerEth = side === MarketOperation.Sell ? inputAmountPerEth : outputAmountPerEth;
         const makerAmountPerEth = side === MarketOperation.Sell ? outputAmountPerEth : inputAmountPerEth;
 
-        // Find the unoptimized best rate to calculate savings from optimizer
-        const _unoptimizedPath = fillsToSortedPaths(fills, side, inputAmount, penaltyOpts)[0];
-        const unoptimizedPath = _unoptimizedPath ? _unoptimizedPath.collapse(orderOpts) : undefined;
-
+        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,
@@ -536,6 +533,18 @@ export class MarketOperationUtils {
                 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 = await findOptimalPathJSAsync(
                 side,
                 fills,
@@ -561,7 +570,6 @@ export class MarketOperationUtils {
                 sourceFlags: SOURCE_FLAGS[ERC20BridgeSource.MultiHop],
                 marketSideLiquidity,
                 adjustedRate: bestTwoHopRate,
-                unoptimizedPath,
                 takerAmountPerEth,
                 makerAmountPerEth,
             };
@@ -573,7 +581,10 @@ export class MarketOperationUtils {
         }
 
         // Generate a fallback path if required
-        await this._addOptionalFallbackAsync(side, inputAmount, optimalPath, dexQuotes, fills, opts, penaltyOpts);
+        // 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);
 
         return {
@@ -582,7 +593,6 @@ export class MarketOperationUtils {
             sourceFlags: collapsedPath.sourceFlags,
             marketSideLiquidity,
             adjustedRate: optimalPathRate,
-            unoptimizedPath,
             takerAmountPerEth,
             makerAmountPerEth,
         };
@@ -656,17 +666,49 @@ export class MarketOperationUtils {
             // Timing of RFQT lifecycle
             const timeStart = new Date().getTime();
             const { makerToken, takerToken } = nativeOrders[0].order;
+
+            // Filter Alt Rfq Maker Asset Offerings to the current pair
+            const filteredOfferings: AltRfqMakerAssetOfferings = {};
+            if (rfqt.altRfqAssetOfferings) {
+                const endpoints = Object.keys(rfqt.altRfqAssetOfferings);
+                for (const endpoint of endpoints) {
+                    // Get the current pair if being offered
+                    const offering = getAltMarketInfo(rfqt.altRfqAssetOfferings[endpoint], makerToken, takerToken);
+                    if (offering) {
+                        filteredOfferings[endpoint] = [offering];
+                    }
+                }
+            }
+
             if (rfqt.isIndicative) {
                 // An indicative quote is being requested, and indicative quotes price-aware enabled
                 // Make the RFQT request and then re-run the sampler if new orders come back.
-                const indicativeQuotes = await rfqt.quoteRequestor.requestRfqtIndicativeQuotesAsync(
-                    makerToken,
-                    takerToken,
-                    amount,
-                    side,
-                    wholeOrderPrice,
-                    rfqt,
-                );
+
+                const indicativeQuotes =
+                    rfqt.rfqClient !== undefined
+                        ? ((
+                              await rfqt.rfqClient.getV1PricesAsync({
+                                  altRfqAssetOfferings: filteredOfferings,
+                                  assetFillAmount: amount,
+                                  chainId: this._sampler.chainId,
+                                  comparisonPrice: wholeOrderPrice,
+                                  integratorId: rfqt.integrator.integratorId,
+                                  intentOnFilling: rfqt.intentOnFilling,
+                                  makerToken,
+                                  marketOperation: side,
+                                  takerAddress: rfqt.takerAddress,
+                                  takerToken,
+                                  txOrigin: rfqt.txOrigin,
+                              })
+                          ).prices as V4RFQIndicativeQuoteMM[])
+                        : await rfqt.quoteRequestor.requestRfqtIndicativeQuotesAsync(
+                              makerToken,
+                              takerToken,
+                              amount,
+                              side,
+                              wholeOrderPrice,
+                              rfqt,
+                          );
                 const deltaTime = new Date().getTime() - timeStart;
                 DEFAULT_INFO_LOGGER({
                     rfqQuoteType: 'indicative',
@@ -680,14 +722,31 @@ export class MarketOperationUtils {
             } else {
                 // A firm quote is being requested, and firm quotes price-aware enabled.
                 // Ensure that `intentOnFilling` is enabled and make the request.
-                const firmQuotes = await rfqt.quoteRequestor.requestRfqtFirmQuotesAsync(
-                    makerToken,
-                    takerToken,
-                    amount,
-                    side,
-                    wholeOrderPrice,
-                    rfqt,
-                );
+                const firmQuotes =
+                    rfqt.rfqClient !== undefined
+                        ? (
+                              await rfqt.rfqClient.getV1QuotesAsync({
+                                  altRfqAssetOfferings: filteredOfferings,
+                                  assetFillAmount: amount,
+                                  chainId: this._sampler.chainId,
+                                  comparisonPrice: wholeOrderPrice,
+                                  integratorId: rfqt.integrator.integratorId,
+                                  intentOnFilling: rfqt.intentOnFilling,
+                                  makerToken,
+                                  marketOperation: side,
+                                  takerAddress: rfqt.takerAddress,
+                                  takerToken,
+                                  txOrigin: rfqt.txOrigin,
+                              })
+                          ).quotes.map(toSignedNativeOrder)
+                        : await rfqt.quoteRequestor.requestRfqtFirmQuotesAsync(
+                              makerToken,
+                              takerToken,
+                              amount,
+                              side,
+                              wholeOrderPrice,
+                              rfqt,
+                          );
                 const deltaTime = new Date().getTime() - timeStart;
                 DEFAULT_INFO_LOGGER({
                     rfqQuoteType: 'firm',
@@ -770,7 +829,7 @@ 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.isFresh(takerToken, makerToken)) {
+                if (!cache || cache.isFresh(takerToken, makerToken)) {
                     return Promise.resolve([]);
                 }
                 return cache.getFreshPoolsForPairAsync(takerToken, makerToken);
@@ -778,6 +837,8 @@ export class MarketOperationUtils {
         );
     }
 
+    /*
+     * 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,
@@ -843,6 +904,7 @@ export class MarketOperationUtils {
             }
         }
     }
+    */
 }
 
 // tslint:disable: max-file-line-count

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

@@ -8,6 +8,7 @@ import {
     AaveV2FillData,
     AggregationError,
     BalancerFillData,
+    BalancerV2BatchSwapFillData,
     BalancerV2FillData,
     BancorFillData,
     CollapsedFill,
@@ -18,6 +19,7 @@ import {
     ERC20BridgeSource,
     FillData,
     FinalUniswapV3FillData,
+    GeistFillData,
     GenericRouterFillData,
     KyberDmmFillData,
     KyberFillData,
@@ -36,6 +38,7 @@ import {
     ShellFillData,
     UniswapV2FillData,
     UniswapV3FillData,
+    UniswapV3PathAmount,
 } from './types';
 
 // tslint:disable completed-docs
@@ -84,7 +87,7 @@ export function getErc20BridgeSourceToBridgeSource(source: ERC20BridgeSource): s
         case ERC20BridgeSource.Balancer:
             return encodeBridgeSourceId(BridgeProtocol.Balancer, 'Balancer');
         case ERC20BridgeSource.BalancerV2:
-            return encodeBridgeSourceId(BridgeProtocol.BalancerV2, 'BalancerV2');
+            return encodeBridgeSourceId(BridgeProtocol.BalancerV2Batch, 'BalancerV2');
         case ERC20BridgeSource.Bancor:
             return encodeBridgeSourceId(BridgeProtocol.Bancor, 'Bancor');
         // case ERC20BridgeSource.CoFiX:
@@ -108,24 +111,16 @@ export function getErc20BridgeSourceToBridgeSource(source: ERC20BridgeSource): s
             return encodeBridgeSourceId(BridgeProtocol.Mooniswap, 'Mooniswap');
         case ERC20BridgeSource.MStable:
             return encodeBridgeSourceId(BridgeProtocol.MStable, 'MStable');
-        case ERC20BridgeSource.Eth2Dai:
-            return encodeBridgeSourceId(BridgeProtocol.Oasis, 'Eth2Dai');
         case ERC20BridgeSource.Shell:
             return encodeBridgeSourceId(BridgeProtocol.Shell, 'Shell');
-        case ERC20BridgeSource.SnowSwap:
-            return encodeBridgeSourceId(BridgeProtocol.Curve, 'SnowSwap');
         case ERC20BridgeSource.SushiSwap:
             return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'SushiSwap');
-        case ERC20BridgeSource.Swerve:
-            return encodeBridgeSourceId(BridgeProtocol.Curve, 'Swerve');
         case ERC20BridgeSource.Uniswap:
             return encodeBridgeSourceId(BridgeProtocol.Uniswap, 'Uniswap');
         case ERC20BridgeSource.UniswapV2:
             return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'UniswapV2');
         case ERC20BridgeSource.DodoV2:
             return encodeBridgeSourceId(BridgeProtocol.DodoV2, 'DodoV2');
-        case ERC20BridgeSource.Linkswap:
-            return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'Linkswap');
         case ERC20BridgeSource.PancakeSwap:
             return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'PancakeSwap');
         case ERC20BridgeSource.PancakeSwapV2:
@@ -202,6 +197,12 @@ export function getErc20BridgeSourceToBridgeSource(source: ERC20BridgeSource): s
             return encodeBridgeSourceId(BridgeProtocol.AaveV2, 'AaveV2');
         case ERC20BridgeSource.Compound:
             return encodeBridgeSourceId(BridgeProtocol.Compound, 'Compound');
+        case ERC20BridgeSource.Geist:
+            return encodeBridgeSourceId(BridgeProtocol.AaveV2, 'Geist');
+        case ERC20BridgeSource.MobiusMoney:
+            return encodeBridgeSourceId(BridgeProtocol.Nerve, 'MobiusMoney');
+        case ERC20BridgeSource.BiSwap:
+            return encodeBridgeSourceId(BridgeProtocol.UniswapV2, 'BiSwap');
         default:
             throw new Error(AggregationError.NoBridgeForSource);
     }
@@ -225,8 +226,6 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
     switch (order.source) {
         case ERC20BridgeSource.Curve:
         case ERC20BridgeSource.CurveV2:
-        case ERC20BridgeSource.Swerve:
-        case ERC20BridgeSource.SnowSwap:
         case ERC20BridgeSource.Nerve:
         case ERC20BridgeSource.Synapse:
         case ERC20BridgeSource.Belt:
@@ -237,6 +236,7 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
         case ERC20BridgeSource.FirebirdOneSwap:
         case ERC20BridgeSource.IronSwap:
         case ERC20BridgeSource.ACryptos:
+        case ERC20BridgeSource.MobiusMoney:
             const curveFillData = (order as OptimizedMarketBridgeOrder<CurveFillData>).fillData;
             bridgeData = encoder.encode([
                 curveFillData.pool.poolAddress,
@@ -251,9 +251,18 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
             bridgeData = encoder.encode([balancerFillData.poolAddress]);
             break;
         case ERC20BridgeSource.BalancerV2:
+            {
+                const balancerV2FillData = (order as OptimizedMarketBridgeOrder<BalancerV2BatchSwapFillData>).fillData;
+                bridgeData = encoder.encode([
+                    balancerV2FillData.vault,
+                    balancerV2FillData.swapSteps,
+                    balancerV2FillData.assets,
+                ]);
+            }
+            break;
         case ERC20BridgeSource.Beethovenx:
-            const balancerV2FillData = (order as OptimizedMarketBridgeOrder<BalancerV2FillData>).fillData;
-            const { vault, poolId } = balancerV2FillData;
+            const beethovenFillData = (order as OptimizedMarketBridgeOrder<BalancerV2FillData>).fillData;
+            const { vault, poolId } = beethovenFillData;
             bridgeData = encoder.encode([vault, poolId]);
             break;
         case ERC20BridgeSource.Bancor:
@@ -263,7 +272,6 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
         case ERC20BridgeSource.UniswapV2:
         case ERC20BridgeSource.SushiSwap:
         case ERC20BridgeSource.CryptoCom:
-        case ERC20BridgeSource.Linkswap:
         case ERC20BridgeSource.PancakeSwap:
         case ERC20BridgeSource.PancakeSwapV2:
         case ERC20BridgeSource.BakerySwap:
@@ -284,6 +292,7 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
         case ERC20BridgeSource.SpiritSwap:
         case ERC20BridgeSource.SpookySwap:
         case ERC20BridgeSource.MorpheusSwap:
+        case ERC20BridgeSource.BiSwap:
             const uniswapV2FillData = (order as OptimizedMarketBridgeOrder<UniswapV2FillData>).fillData;
             bridgeData = encoder.encode([uniswapV2FillData.router, uniswapV2FillData.tokenAddressPath]);
             break;
@@ -320,10 +329,6 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
             const uniFillData = (order as OptimizedMarketBridgeOrder<GenericRouterFillData>).fillData;
             bridgeData = encoder.encode([uniFillData.router]);
             break;
-        case ERC20BridgeSource.Eth2Dai:
-            const oasisFillData = (order as OptimizedMarketBridgeOrder<GenericRouterFillData>).fillData;
-            bridgeData = encoder.encode([oasisFillData.router]);
-            break;
         case ERC20BridgeSource.MStable:
             const mStableFillData = (order as OptimizedMarketBridgeOrder<GenericRouterFillData>).fillData;
             bridgeData = encoder.encode([mStableFillData.router]);
@@ -356,6 +361,10 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
             const compoundFillData = (order as OptimizedMarketBridgeOrder<CompoundFillData>).fillData;
             bridgeData = encoder.encode([compoundFillData.cToken]);
             break;
+        case ERC20BridgeSource.Geist:
+            const geistFillData = (order as OptimizedMarketBridgeOrder<GeistFillData>).fillData;
+            bridgeData = encoder.encode([geistFillData.lendingPool, geistFillData.gToken]);
+            break;
 
         default:
             throw new Error(AggregationError.NoBridgeForSource);
@@ -387,11 +396,14 @@ function createFinalBridgeOrderFillDataFromCollapsedFill(fill: CollapsedFill): F
     switch (fill.source) {
         case ERC20BridgeSource.UniswapV3: {
             const fd = fill.fillData as UniswapV3FillData;
-            return {
+            const { uniswapPath, gasUsed } = getBestUniswapV3PathAmountForInputAmount(fd, fill.input);
+            const finalFillData: FinalUniswapV3FillData = {
                 router: fd.router,
                 tokenAddressPath: fd.tokenAddressPath,
-                uniswapPath: getBestUniswapV3PathForInputAmount(fd, fill.input),
+                uniswapPath,
+                gasUsed,
             };
+            return finalFillData;
         }
         default:
             break;
@@ -399,18 +411,21 @@ function createFinalBridgeOrderFillDataFromCollapsedFill(fill: CollapsedFill): F
     return fill.fillData;
 }
 
-function getBestUniswapV3PathForInputAmount(fillData: UniswapV3FillData, inputAmount: BigNumber): string {
+function getBestUniswapV3PathAmountForInputAmount(
+    fillData: UniswapV3FillData,
+    inputAmount: BigNumber,
+): UniswapV3PathAmount {
     if (fillData.pathAmounts.length === 0) {
         throw new Error(`No Uniswap V3 paths`);
     }
     // Find the best path that can satisfy `inputAmount`.
     // Assumes `fillData.pathAmounts` is sorted ascending.
-    for (const { inputAmount: pathInputAmount, uniswapPath } of fillData.pathAmounts) {
-        if (pathInputAmount.gte(inputAmount)) {
-            return uniswapPath;
+    for (const pathAmount of fillData.pathAmounts) {
+        if (pathAmount.inputAmount.gte(inputAmount)) {
+            return pathAmount;
         }
     }
-    return fillData.pathAmounts[fillData.pathAmounts.length - 1].uniswapPath;
+    return fillData.pathAmounts[fillData.pathAmounts.length - 1];
 }
 
 export function getMakerTakerTokens(opts: CreateOrderFromPathOpts): [string, string] {
@@ -463,8 +478,6 @@ export const BRIDGE_ENCODERS: {
     // Curve like
     [ERC20BridgeSource.Curve]: curveEncoder,
     [ERC20BridgeSource.CurveV2]: curveEncoder,
-    [ERC20BridgeSource.Swerve]: curveEncoder,
-    [ERC20BridgeSource.SnowSwap]: curveEncoder,
     [ERC20BridgeSource.Nerve]: curveEncoder,
     [ERC20BridgeSource.Synapse]: curveEncoder,
     [ERC20BridgeSource.Belt]: curveEncoder,
@@ -475,18 +488,19 @@ export const BRIDGE_ENCODERS: {
     [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.Linkswap]: routerAddressPathEncoder,
     [ERC20BridgeSource.ShibaSwap]: routerAddressPathEncoder,
     [ERC20BridgeSource.Pangolin]: routerAddressPathEncoder,
     [ERC20BridgeSource.TraderJoe]: routerAddressPathEncoder,
     [ERC20BridgeSource.SpiritSwap]: routerAddressPathEncoder,
     [ERC20BridgeSource.SpookySwap]: routerAddressPathEncoder,
     [ERC20BridgeSource.MorpheusSwap]: routerAddressPathEncoder,
+    [ERC20BridgeSource.BiSwap]: routerAddressPathEncoder,
     // Celo
     [ERC20BridgeSource.UbeSwap]: routerAddressPathEncoder,
     // BSC
@@ -508,14 +522,27 @@ export const BRIDGE_ENCODERS: {
     [ERC20BridgeSource.Shell]: poolEncoder,
     [ERC20BridgeSource.Component]: poolEncoder,
     [ERC20BridgeSource.Mooniswap]: poolEncoder,
-    [ERC20BridgeSource.Eth2Dai]: poolEncoder,
     [ERC20BridgeSource.MStable]: poolEncoder,
     [ERC20BridgeSource.Balancer]: poolEncoder,
     [ERC20BridgeSource.Cream]: poolEncoder,
     [ERC20BridgeSource.Uniswap]: poolEncoder,
     // Custom integrations
     [ERC20BridgeSource.MakerPsm]: makerPsmEncoder,
-    [ERC20BridgeSource.BalancerV2]: balancerV2Encoder,
+    [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' },
@@ -525,6 +552,7 @@ export const BRIDGE_ENCODERS: {
     [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] {

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

@@ -122,17 +122,8 @@ export class Path {
                 ++i;
                 continue;
             }
-            // If there are contiguous bridge orders, we can batch them together.
-            // TODO jacob pretty sure this is from DFB and we can remove
-            const contiguousBridgeFills = [collapsedFills[i]];
-            for (let j = i + 1; j < collapsedFills.length; ++j) {
-                if (collapsedFills[j].source === ERC20BridgeSource.Native) {
-                    break;
-                }
-                contiguousBridgeFills.push(collapsedFills[j]);
-            }
 
-            this.orders.push(createBridgeOrder(contiguousBridgeFills[0], makerToken, takerToken, opts.side));
+            this.orders.push(createBridgeOrder(collapsedFills[i], makerToken, takerToken, opts.side));
             i += 1;
         }
         return this as CollapsedPath;

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

@@ -21,6 +21,8 @@ const MIN_NUM_SAMPLE_INPUTS = 3;
 
 const isDexSample = (obj: DexSample | NativeOrderWithFillableAmounts): obj is DexSample => !!(obj as DexSample).source;
 
+const ONE_BASE_UNIT = new BigNumber(1);
+
 function nativeOrderToNormalizedAmounts(
     side: MarketOperation,
     nativeOrder: NativeOrderWithFillableAmounts,
@@ -74,7 +76,15 @@ function findRoutesAndCreateOptimalPath(
     opts: PathPenaltyOpts,
     fees: FeeSchedule,
     neonRouterNumSamples: number,
-): Path | undefined {
+    vipSourcesSet: Set<ERC20BridgeSource>,
+): { allSourcesPath: Path | undefined; vipSourcesPath: Path | undefined } | undefined {
+    // Currently the rust router is unable to handle 1 base unit sized quotes and will error out
+    // To avoid flooding the logs with these errors we just return an insufficient liquidity error
+    // which is how the JS router handles these quotes today
+    if (input.isLessThanOrEqualTo(ONE_BASE_UNIT)) {
+        return undefined;
+    }
+
     const createFill = (sample: DexSample): Fill | undefined => {
         const fills = dexSamplesToFills(side, [sample], opts.outputAmountPerEth, opts.inputAmountPerEth, fees);
         // NOTE: If the sample has 0 output dexSamplesToFills will return [] because no fill can be created
@@ -85,6 +95,127 @@ function findRoutesAndCreateOptimalPath(
         return fills[0];
     };
 
+    const createPathFromStrategy = (sourcesRustRoute: Float64Array, sourcesOutputAmounts: Float64Array) => {
+        const routesAndSamplesAndOutputs = _.zip(
+            sourcesRustRoute,
+            samplesAndNativeOrdersWithResults,
+            sourcesOutputAmounts,
+            sampleSourcePathIds,
+        );
+        const adjustedFills: Fill[] = [];
+        const totalRoutedAmount = BigNumber.sum(...sourcesRustRoute);
+
+        const scale = input.dividedBy(totalRoutedAmount);
+        for (const [
+            routeInput,
+            routeSamplesAndNativeOrders,
+            outputAmount,
+            sourcePathId,
+        ] of routesAndSamplesAndOutputs) {
+            if (!Number.isFinite(outputAmount)) {
+                DEFAULT_WARNING_LOGGER(rustArgs, `neon-router: invalid route outputAmount ${outputAmount}`);
+                return undefined;
+            }
+            if (!routeInput || !routeSamplesAndNativeOrders || !outputAmount) {
+                continue;
+            }
+            // TODO(kimpers): [TKR-241] amounts are sometimes clipped in the router due to precision loss for number/f64
+            // we can work around it by scaling it and rounding up. However now we end up with a total amount of a couple base units too much
+            const rustInputAdjusted = BigNumber.min(
+                new BigNumber(routeInput).multipliedBy(scale).integerValue(BigNumber.ROUND_CEIL),
+                input,
+            );
+
+            const current = routeSamplesAndNativeOrders[routeSamplesAndNativeOrders.length - 1];
+            if (!isDexSample(current)) {
+                const nativeFill = nativeOrdersToFills(
+                    side,
+                    [current],
+                    rustInputAdjusted,
+                    opts.outputAmountPerEth,
+                    opts.inputAmountPerEth,
+                    fees,
+                    false,
+                )[0] as Fill | undefined;
+                // Note: If the order has an adjusted rate of less than or equal to 0 it will be skipped
+                // and nativeFill will be `undefined`
+                if (nativeFill) {
+                    // NOTE: For Limit/RFQ orders we are done here. No need to scale output
+                    adjustedFills.push({ ...nativeFill, sourcePathId: sourcePathId ?? hexUtils.random() });
+                }
+                continue;
+            }
+
+            // NOTE: For DexSamples only
+            let fill = createFill(current);
+            if (!fill) {
+                continue;
+            }
+            const routeSamples = routeSamplesAndNativeOrders as Array<DexSample<FillData>>;
+            // Descend to approach a closer fill for fillData which may not be consistent
+            // throughout the path (UniswapV3) and for a closer guesstimate at
+            // gas used
+
+            assert.assert(routeSamples.length >= 1, 'Found no sample to use for source');
+            for (let k = routeSamples.length - 1; k >= 0; k--) {
+                if (k === 0) {
+                    fill = createFill(routeSamples[0]) ?? fill;
+                }
+                if (rustInputAdjusted.isGreaterThan(routeSamples[k].input)) {
+                    const left = routeSamples[k];
+                    const right = routeSamples[k + 1];
+                    if (left && right) {
+                        fill =
+                            createFill({
+                                ...right, // default to the greater (for gas used)
+                                input: rustInputAdjusted,
+                                output: new BigNumber(outputAmount),
+                            }) ?? fill;
+                    } else {
+                        assert.assert(Boolean(left || right), 'No valid sample to use');
+                        fill = createFill(left || right) ?? fill;
+                    }
+                    break;
+                }
+            }
+
+            // TODO(kimpers): remove once we have solved the rounding/precision loss issues in the Rust router
+            const maxSampledOutput = BigNumber.max(...routeSamples.map(s => s.output));
+            // Scale output by scale factor but never go above the largest sample in sell quotes (unknown liquidity)  or below 1 base unit (unfillable)
+            const scaleOutput = (output: BigNumber) => {
+                // Don't try to scale 0 output as it will be clamped to 1
+                if (output.eq(ZERO_AMOUNT)) {
+                    return output;
+                }
+
+                const scaled = output
+                    .times(scale)
+                    .decimalPlaces(0, side === MarketOperation.Sell ? BigNumber.ROUND_FLOOR : BigNumber.ROUND_CEIL);
+                const capped = MarketOperation.Sell ? BigNumber.min(scaled, maxSampledOutput) : scaled;
+
+                return BigNumber.max(capped, 1);
+            };
+
+            adjustedFills.push({
+                ...fill,
+                input: rustInputAdjusted,
+                output: scaleOutput(fill.output),
+                adjustedOutput: scaleOutput(fill.adjustedOutput),
+                index: 0,
+                parent: undefined,
+                sourcePathId: sourcePathId ?? hexUtils.random(),
+            });
+        }
+
+        if (adjustedFills.length === 0) {
+            return undefined;
+        }
+
+        const pathFromRustInputs = Path.create(side, adjustedFills, input, opts);
+
+        return pathFromRustInputs;
+    };
+
     const samplesAndNativeOrdersWithResults: Array<DexSample[] | NativeOrderWithFillableAmounts[]> = [];
     const serializedPaths: SerializedPath[] = [];
     const sampleSourcePathIds: string[] = [];
@@ -96,8 +227,9 @@ function findRoutesAndCreateOptimalPath(
         const sourcePathId = hexUtils.random();
         const singleSourceSamplesWithOutput = [...singleSourceSamples];
         for (let i = singleSourceSamples.length - 1; i >= 0; i--) {
-            if (singleSourceSamples[i].output.isZero()) {
-                // Remove trailing 0 output samples
+            const currentOutput = singleSourceSamples[i].output;
+            if (currentOutput.isZero() || !currentOutput.isFinite()) {
+                // Remove trailing 0/invalid output samples
                 singleSourceSamplesWithOutput.pop();
             } else {
                 break;
@@ -127,6 +259,7 @@ function findRoutesAndCreateOptimalPath(
                 inputs: [],
                 outputs: [],
                 outputFees: [],
+                isVip: vipSourcesSet.has(singleSourceSamplesWithOutput[0]?.source),
             },
         );
 
@@ -155,12 +288,24 @@ function findRoutesAndCreateOptimalPath(
         const inputs = [];
         const outputs = [];
         const outputFees = [];
-        // NOTE: We start at 0 here because the native order might be much larger than the amount
-        // By starting at 0 we make sure we can always use a portion of the native order to fill/partial fill
-        for (let i = 0; i <= 12; i++) {
-            const fraction = i / 12;
-            const currentInput = BigNumber.min(normalizedOrderInput.times(fraction), normalizedOrderInput);
-            const currentOutput = BigNumber.min(normalizedOrderOutput.times(fraction), normalizedOrderOutput);
+
+        // NOTE: Limit orders can be both larger or smaller than the input amount
+        // If the order is larger than the input we can scale the order to the size of
+        // the quote input (order pricing is constant) and then create 13 "samples" up to
+        // and including the full quote input amount.
+        // If the order is smaller we don't need to scale anything, we will just end up
+        // with trailing duplicate samples for the order input as we cannot go higher
+        const scaleToInput = BigNumber.min(input.dividedBy(normalizedOrderInput), 1);
+        for (let i = 1; i <= 13; i++) {
+            const fraction = i / 13;
+            const currentInput = BigNumber.min(
+                normalizedOrderInput.times(scaleToInput).times(fraction),
+                normalizedOrderInput,
+            );
+            const currentOutput = BigNumber.min(
+                normalizedOrderOutput.times(scaleToInput).times(fraction),
+                normalizedOrderOutput,
+            );
             const id = `${ERC20BridgeSource.Native}-${serializedPaths.length}-${idx}-${i}`;
             inputs.push(currentInput.integerValue().toNumber());
             outputs.push(currentOutput.integerValue().toNumber());
@@ -173,6 +318,7 @@ function findRoutesAndCreateOptimalPath(
             inputs,
             outputs,
             outputFees,
+            isVip: true,
         };
 
         samplesAndNativeOrdersWithResults.push([nativeOrder]);
@@ -191,129 +337,42 @@ function findRoutesAndCreateOptimalPath(
     };
 
     const allSourcesRustRoute = new Float64Array(rustArgs.pathsIn.length);
-    const strategySourcesOutputAmounts = new Float64Array(rustArgs.pathsIn.length);
-    route(rustArgs, allSourcesRustRoute, strategySourcesOutputAmounts, neonRouterNumSamples);
+    const allSourcesOutputAmounts = new Float64Array(rustArgs.pathsIn.length);
+    const vipSourcesRustRoute = new Float64Array(rustArgs.pathsIn.length);
+    const vipSourcesOutputAmounts = new Float64Array(rustArgs.pathsIn.length);
+
+    route(
+        rustArgs,
+        allSourcesRustRoute,
+        allSourcesOutputAmounts,
+        vipSourcesRustRoute,
+        vipSourcesOutputAmounts,
+        neonRouterNumSamples,
+    );
     assert.assert(
         rustArgs.pathsIn.length === allSourcesRustRoute.length,
         'different number of sources in the Router output than the input',
     );
     assert.assert(
-        rustArgs.pathsIn.length === strategySourcesOutputAmounts.length,
+        rustArgs.pathsIn.length === allSourcesOutputAmounts.length,
+        'different number of sources in the Router output amounts results than the input',
+    );
+    assert.assert(
+        rustArgs.pathsIn.length === vipSourcesRustRoute.length,
+        'different number of sources in the Router output than the input',
+    );
+    assert.assert(
+        rustArgs.pathsIn.length === vipSourcesOutputAmounts.length,
         'different number of sources in the Router output amounts results than the input',
     );
 
-    const routesAndSamplesAndOutputs = _.zip(
-        allSourcesRustRoute,
-        samplesAndNativeOrdersWithResults,
-        strategySourcesOutputAmounts,
-        sampleSourcePathIds,
-    );
-    const adjustedFills: Fill[] = [];
-    const totalRoutedAmount = BigNumber.sum(...allSourcesRustRoute);
+    const allSourcesPath = createPathFromStrategy(allSourcesRustRoute, allSourcesOutputAmounts);
+    const vipSourcesPath = createPathFromStrategy(vipSourcesRustRoute, vipSourcesOutputAmounts);
 
-    const scale = input.dividedBy(totalRoutedAmount);
-    for (const [routeInput, routeSamplesAndNativeOrders, outputAmount, sourcePathId] of routesAndSamplesAndOutputs) {
-        if (!Number.isFinite(outputAmount)) {
-            DEFAULT_WARNING_LOGGER(rustArgs, `neon-router: invalid route outputAmount ${outputAmount}`);
-            return undefined;
-        }
-        if (!routeInput || !routeSamplesAndNativeOrders || !outputAmount) {
-            continue;
-        }
-        // TODO(kimpers): [TKR-241] amounts are sometimes clipped in the router due to precision loss for number/f64
-        // we can work around it by scaling it and rounding up. However now we end up with a total amount of a couple base units too much
-        const rustInputAdjusted = BigNumber.min(
-            new BigNumber(routeInput).multipliedBy(scale).integerValue(BigNumber.ROUND_CEIL),
-            input,
-        );
-
-        const current = routeSamplesAndNativeOrders[routeSamplesAndNativeOrders.length - 1];
-        if (!isDexSample(current)) {
-            const nativeFill = nativeOrdersToFills(
-                side,
-                [current],
-                rustInputAdjusted,
-                opts.outputAmountPerEth,
-                opts.inputAmountPerEth,
-                fees,
-                false,
-            )[0] as Fill | undefined;
-            // Note: If the order has an adjusted rate of less than or equal to 0 it will be skipped
-            // and nativeFill will be `undefined`
-            if (nativeFill) {
-                // NOTE: For Limit/RFQ orders we are done here. No need to scale output
-                adjustedFills.push({ ...nativeFill, sourcePathId: sourcePathId ?? hexUtils.random() });
-            }
-            continue;
-        }
-
-        // NOTE: For DexSamples only
-        let fill = createFill(current);
-        if (!fill) {
-            continue;
-        }
-        const routeSamples = routeSamplesAndNativeOrders as Array<DexSample<FillData>>;
-        // Descend to approach a closer fill for fillData which may not be consistent
-        // throughout the path (UniswapV3) and for a closer guesstimate at
-        // gas used
-
-        assert.assert(routeSamples.length >= 1, 'Found no sample to use for source');
-        for (let k = routeSamples.length - 1; k >= 0; k--) {
-            if (k === 0) {
-                fill = createFill(routeSamples[0]) ?? fill;
-            }
-            if (rustInputAdjusted.isGreaterThan(routeSamples[k].input)) {
-                const left = routeSamples[k];
-                const right = routeSamples[k + 1];
-                if (left && right) {
-                    fill =
-                        createFill({
-                            ...right, // default to the greater (for gas used)
-                            input: rustInputAdjusted,
-                            output: new BigNumber(outputAmount),
-                        }) ?? fill;
-                } else {
-                    assert.assert(Boolean(left || right), 'No valid sample to use');
-                    fill = createFill(left || right) ?? fill;
-                }
-                break;
-            }
-        }
-
-        // TODO(kimpers): remove once we have solved the rounding/precision loss issues in the Rust router
-        const maxSampledOutput = BigNumber.max(...routeSamples.map(s => s.output));
-        // Scale output by scale factor but never go above the largest sample (unknown liquidity) or below 1 base unit (unfillable)
-        const scaleOutput = (output: BigNumber) => {
-            // Don't try to scale 0 output as it will be clamped to 1
-            if (output.eq(ZERO_AMOUNT)) {
-                return output;
-            }
-
-            const scaled = output
-                .times(scale)
-                .decimalPlaces(0, side === MarketOperation.Sell ? BigNumber.ROUND_FLOOR : BigNumber.ROUND_CEIL);
-
-            return BigNumber.max(BigNumber.min(scaled, maxSampledOutput), 1);
-        };
-
-        adjustedFills.push({
-            ...fill,
-            input: rustInputAdjusted,
-            output: scaleOutput(fill.output),
-            adjustedOutput: scaleOutput(fill.adjustedOutput),
-            index: 0,
-            parent: undefined,
-            sourcePathId: sourcePathId ?? hexUtils.random(),
-        });
-    }
-
-    if (adjustedFills.length === 0) {
-        return undefined;
-    }
-
-    const pathFromRustInputs = Path.create(side, adjustedFills, input, opts);
-
-    return pathFromRustInputs;
+    return {
+        allSourcesPath,
+        vipSourcesPath,
+    };
 }
 
 export function findOptimalRustPathFromSamples(
@@ -327,9 +386,18 @@ export function findOptimalRustPathFromSamples(
     neonRouterNumSamples: number,
     samplerMetrics?: SamplerMetrics,
 ): Path | undefined {
-    const beforeAllTimeMs = performance.now();
-    let beforeTimeMs = performance.now();
-    const allSourcesPath = findRoutesAndCreateOptimalPath(
+    const beforeTimeMs = performance.now();
+    const sendMetrics = () => {
+        // tslint:disable-next-line: no-unused-expression
+        samplerMetrics &&
+            samplerMetrics.logRouterDetails({
+                router: 'neon-router',
+                type: 'total',
+                timingMs: performance.now() - beforeTimeMs,
+            });
+    };
+    const vipSourcesSet = new Set(VIP_ERC20_BRIDGE_SOURCES_BY_CHAIN_ID[chainId]);
+    const paths = findRoutesAndCreateOptimalPath(
         side,
         samples,
         nativeOrders,
@@ -337,58 +405,22 @@ export function findOptimalRustPathFromSamples(
         opts,
         fees,
         neonRouterNumSamples,
+        vipSourcesSet,
     );
-    // tslint:disable-next-line: no-unused-expression
-    samplerMetrics &&
-        samplerMetrics.logRouterDetails({
-            router: 'neon-router',
-            type: 'all',
-            timingMs: performance.now() - beforeTimeMs,
-        });
-    if (!allSourcesPath) {
+
+    if (!paths) {
+        sendMetrics();
         return undefined;
     }
 
-    const vipSources = VIP_ERC20_BRIDGE_SOURCES_BY_CHAIN_ID[chainId];
+    const { allSourcesPath, vipSourcesPath } = paths;
 
-    // HACK(kimpers): The Rust router currently doesn't account for VIP sources correctly
-    // we need to try to route them in isolation and compare with the results all sources
-    if (vipSources.length > 0) {
-        beforeTimeMs = performance.now();
-        const vipSourcesSet = new Set(vipSources);
-        const vipSourcesSamples = samples.filter(s => s[0] && vipSourcesSet.has(s[0].source));
-
-        if (vipSourcesSamples.length > 0) {
-            const vipSourcesPath = findRoutesAndCreateOptimalPath(
-                side,
-                vipSourcesSamples,
-                [],
-                input,
-                opts,
-                fees,
-                neonRouterNumSamples,
-            );
-            // tslint:disable-next-line: no-unused-expression
-            samplerMetrics &&
-                samplerMetrics.logRouterDetails({
-                    router: 'neon-router',
-                    type: 'vip',
-                    timingMs: performance.now() - beforeTimeMs,
-                });
-
-            if (vipSourcesPath?.isBetterThan(allSourcesPath)) {
-                return vipSourcesPath;
-            }
-        }
+    if (!allSourcesPath || vipSourcesPath?.isBetterThan(allSourcesPath)) {
+        sendMetrics();
+        return vipSourcesPath;
     }
-    // tslint:disable-next-line: no-unused-expression
-    samplerMetrics &&
-        samplerMetrics.logRouterDetails({
-            router: 'neon-router',
-            type: 'total',
-            timingMs: performance.now() - beforeAllTimeMs,
-        });
 
+    sendMetrics();
     return allSourcesPath;
 }
 

packages/asset-swapper/src/utils/market_operation_utils/pools_cache/balancer_v2_utils.ts

@@ -51,7 +51,7 @@ export class BalancerV2PoolsCache extends PoolsCache {
 
     constructor(
         chainId: ChainId,
-        private readonly subgraphUrl: string = BALANCER_V2_SUBGRAPH_URL_BY_CHAIN[chainId],
+        private readonly subgraphUrl: string = BALANCER_V2_SUBGRAPH_URL_BY_CHAIN[chainId]!,
         private readonly maxPoolsFetched: number = BALANCER_MAX_POOLS_FETCHED,
         private readonly _topPoolsFetched: number = BALANCER_TOP_POOLS_FETCHED,
         private readonly _warningLogger: LogFunction = DEFAULT_WARNING_LOGGER,

packages/asset-swapper/src/utils/market_operation_utils/pools_cache/balancer_v2_utils_new.ts

@@ -0,0 +1,190 @@
+import { ChainId } from '@0x/contract-addresses';
+import { BigNumber } from '@0x/utils';
+import {
+    BalancerSDK,
+    BalancerSdkConfig,
+    formatSequence,
+    getTokenAddressesForSwap,
+    NewPath,
+    parseToPoolsDict,
+    PoolDictionary,
+    RouteProposer,
+    SwapTypes,
+} from '@balancer-labs/sdk';
+
+import { DEFAULT_WARNING_LOGGER } from '../../../constants';
+import { LogFunction } from '../../../types';
+import { BALANCER_V2_SUBGRAPH_URL_BY_CHAIN, ONE_SECOND_MS } from '../constants';
+import { BalancerSwapInfo, BalancerSwaps } from '../types';
+
+import { CacheValue, EMPTY_BALANCER_SWAPS, SwapInfoCache } from './pair_swaps_cache';
+import { SubgraphPoolDataService } from './sgPoolDataService';
+
+// tslint:disable-next-line:custom-no-magic-numbers
+const ONE_DAY_MS = 24 * 60 * 60 * ONE_SECOND_MS;
+
+export interface BalancerPoolResponse {
+    poolType: string;
+    id: string;
+    tokens: Array<{ address: string }>;
+    tokensList: string[];
+}
+
+export class BalancerV2SwapInfoCache extends SwapInfoCache {
+    private static readonly _MAX_POOLS_PER_PATH = 4;
+    private static readonly _MAX_CANDIDATE_PATHS_PER_PAIR = 2;
+    private readonly _routeProposer: RouteProposer;
+    private readonly _poolDataService: SubgraphPoolDataService;
+
+    constructor(
+        chainId: ChainId,
+        subgraphUrl: string | null = BALANCER_V2_SUBGRAPH_URL_BY_CHAIN[chainId],
+        private readonly _warningLogger: LogFunction = DEFAULT_WARNING_LOGGER,
+        cache: { [key: string]: CacheValue } = {},
+    ) {
+        super(cache);
+        const config: BalancerSdkConfig = {
+            network: chainId as number, // wtf TS
+            rpcUrl: '', // Not actually used by SDK for this.
+        };
+        const balancerSdk = new BalancerSDK(config);
+        // The RouteProposer finds paths between a token pair using direct/multihop/linearPool routes
+        this._routeProposer = balancerSdk.sor.routeProposer;
+        // Uses Subgraph to retrieve up to date pool data required for routeProposer
+        this._poolDataService = new SubgraphPoolDataService({
+            chainId,
+            subgraphUrl,
+        });
+        void this._loadTopPoolsAsync();
+        // Reload the top pools every 12 hours
+        setInterval(async () => void this._loadTopPoolsAsync(), ONE_DAY_MS / 2);
+    }
+
+    protected async _loadTopPoolsAsync(): Promise<void> {
+        const fromToSwapInfo: {
+            [from: string]: { [to: string]: BalancerSwaps };
+        } = {};
+
+        // Retrieve pool data from Subgraph
+        const pools = await this._poolDataService.getPools();
+        // timestamp is used for Element pools
+        const timestamp = Math.floor(Date.now() / ONE_SECOND_MS);
+        const poolsDict = parseToPoolsDict(pools, timestamp);
+
+        for (const pool of pools) {
+            const { tokensList } = pool;
+            // tslint:disable-next-line: await-promise
+            await null; // This loop can be CPU heavy so yield to event loop.
+            for (const from of tokensList) {
+                for (const to of tokensList.filter(t => t.toLowerCase() !== from.toLowerCase())) {
+                    fromToSwapInfo[from] = fromToSwapInfo[from] || {};
+                    // If a record for pair already exists skip as all paths alreay found
+                    if (fromToSwapInfo[from][to]) {
+                        continue;
+                    } else {
+                        try {
+                            const expiresAt = Date.now() + this._cacheTimeMs;
+                            // Retrieve swap steps and assets for a token pair
+                            // This only needs to be called once per pair as all paths will be created from single call
+                            const pairSwapInfo = this._getPoolPairSwapInfo(poolsDict, from, to);
+                            fromToSwapInfo[from][to] = pairSwapInfo;
+                            this._cacheSwapInfoForPair(from, to, fromToSwapInfo[from][to], expiresAt);
+                        } catch (err) {
+                            this._warningLogger(err, `Failed to load Balancer V2 top pools`);
+                            // soldier on
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Will retrieve fresh pair and path data from Subgraph and return and array of swap info for pair..
+     * @param takerToken Address of takerToken.
+     * @param makerToken Address of makerToken.
+     * @returns Swap data for pair consisting of assets and swap steps for ExactIn and ExactOut swap types.
+     */
+    protected async _fetchSwapInfoForPairAsync(takerToken: string, makerToken: string): Promise<BalancerSwaps> {
+        try {
+            // retrieve up to date pools from SG
+            const pools = await this._poolDataService.getPools();
+
+            // timestamp is used for Element pools
+            const timestamp = Math.floor(Date.now() / ONE_SECOND_MS);
+            const poolDictionary = parseToPoolsDict(pools, timestamp);
+            return this._getPoolPairSwapInfo(poolDictionary, takerToken, makerToken);
+        } catch (e) {
+            return EMPTY_BALANCER_SWAPS;
+        }
+    }
+
+    /**
+     * Uses pool data from provided dictionary to find top swap paths for token pair.
+     * @param pools Dictionary of pool data.
+     * @param takerToken Address of taker token.
+     * @param makerToken Address of maker token.
+     * @returns Swap data for pair consisting of assets and swap steps for ExactIn and ExactOut swap types.
+     */
+    private _getPoolPairSwapInfo(pools: PoolDictionary, takerToken: string, makerToken: string): BalancerSwaps {
+        /*
+        Uses Balancer SDK to construct available paths for pair.
+        Paths can be direct, i.e. both tokens are in same pool or multihop.
+        Will also create paths for the new Balancer Linear pools.
+        These are returned in order of available liquidity which is useful for filtering.
+        */
+        const paths = this._routeProposer.getCandidatePathsFromDict(
+            takerToken,
+            makerToken,
+            SwapTypes.SwapExactIn,
+            pools,
+            BalancerV2SwapInfoCache._MAX_POOLS_PER_PATH,
+        );
+
+        if (paths.length === 0) {
+            return EMPTY_BALANCER_SWAPS;
+        }
+
+        // Convert paths data to swap information suitable for queryBatchSwap. Only use top 2 liquid paths
+        return formatSwaps(paths.slice(0, BalancerV2SwapInfoCache._MAX_CANDIDATE_PATHS_PER_PAIR));
+    }
+}
+
+/**
+ * Given an array of Balancer paths, returns swap information that can be passed to queryBatchSwap.
+ * @param paths Array of Balancer paths.
+ * @returns Formatted swap data consisting of assets and swap steps for ExactIn and ExactOut swap types.
+ */
+function formatSwaps(paths: NewPath[]): BalancerSwaps {
+    const formattedSwapsExactIn: BalancerSwapInfo[] = [];
+    const formattedSwapsExactOut: BalancerSwapInfo[] = [];
+    let assets: string[];
+    paths.forEach(path => {
+        // Add a swap amount for each swap so we can use formatSequence. (This will be overwritten with actual amount during query)
+        path.swaps.forEach(s => (s.swapAmount = '0'));
+        const tokenAddresses = getTokenAddressesForSwap(path.swaps);
+        // Formats for both ExactIn and ExactOut swap types
+        const swapsExactIn = formatSequence(SwapTypes.SwapExactIn, path.swaps, tokenAddresses);
+        const swapsExactOut = formatSequence(SwapTypes.SwapExactOut, path.swaps, tokenAddresses);
+        assets = tokenAddresses;
+        formattedSwapsExactIn.push({
+            assets,
+            swapSteps: swapsExactIn.map(s => ({
+                ...s,
+                amount: new BigNumber(s.amount),
+            })),
+        });
+        formattedSwapsExactOut.push({
+            assets,
+            swapSteps: swapsExactOut.map(s => ({
+                ...s,
+                amount: new BigNumber(s.amount),
+            })),
+        });
+    });
+    const formattedSwaps: BalancerSwaps = {
+        swapInfoExactIn: formattedSwapsExactIn,
+        swapInfoExactOut: formattedSwapsExactOut,
+    };
+    return formattedSwaps;
+}

packages/asset-swapper/src/utils/market_operation_utils/pools_cache/pair_swaps_cache.ts

@@ -0,0 +1,91 @@
+import { BalancerSwaps } from '../types';
+
+import { ONE_HOUR_IN_SECONDS, ONE_SECOND_MS } from '../constants';
+
+export interface CacheValue {
+    expiresAt: number;
+    balancerSwaps: BalancerSwaps;
+}
+
+// tslint:disable:custom-no-magic-numbers
+// Cache results for 30mins
+const DEFAULT_CACHE_TIME_MS = (ONE_HOUR_IN_SECONDS / 2) * ONE_SECOND_MS;
+const DEFAULT_TIMEOUT_MS = ONE_SECOND_MS;
+export const EMPTY_BALANCER_SWAPS = { swapInfoExactIn: [], swapInfoExactOut: [] };
+// tslint:enable:custom-no-magic-numbers
+
+/**
+ * Caches SwapInfo for a pair of tokens.
+ * SwapInfo includes swap steps and asset information for those swap steps.
+ */
+export abstract class SwapInfoCache {
+    protected static _isExpired(value: CacheValue): boolean {
+        return Date.now() >= value.expiresAt;
+    }
+    constructor(
+        protected readonly _cache: { [key: string]: CacheValue },
+        protected readonly _cacheTimeMs: number = DEFAULT_CACHE_TIME_MS,
+    ) {}
+
+    public async getFreshPoolsForPairAsync(
+        takerToken: string,
+        makerToken: string,
+        timeoutMs: number = DEFAULT_TIMEOUT_MS,
+    ): Promise<BalancerSwaps> {
+        const timeout = new Promise<BalancerSwaps>(resolve => setTimeout(resolve, timeoutMs, []));
+        return Promise.race([this._getAndSaveFreshSwapInfoForPairAsync(takerToken, makerToken), timeout]);
+    }
+
+    public getCachedSwapInfoForPair(
+        takerToken: string,
+        makerToken: string,
+        ignoreExpired: boolean = true,
+    ): BalancerSwaps | undefined {
+        const key = JSON.stringify([takerToken, makerToken]);
+        const value = this._cache[key];
+        if (ignoreExpired) {
+            return value === undefined ? EMPTY_BALANCER_SWAPS : value.balancerSwaps;
+        }
+        if (!value) {
+            return undefined;
+        }
+        if (SwapInfoCache._isExpired(value)) {
+            return undefined;
+        }
+        return value.balancerSwaps;
+    }
+
+    public isFresh(takerToken: string, makerToken: string): boolean {
+        const cached = this.getCachedSwapInfoForPair(takerToken, makerToken, false);
+        return cached !== undefined;
+    }
+
+    protected async _getAndSaveFreshSwapInfoForPairAsync(
+        takerToken: string,
+        makerToken: string,
+    ): Promise<BalancerSwaps> {
+        const key = JSON.stringify([takerToken, makerToken]);
+        const value = this._cache[key];
+        if (value === undefined || value.expiresAt >= Date.now()) {
+            const swapInfo = await this._fetchSwapInfoForPairAsync(takerToken, makerToken);
+            const expiresAt = Date.now() + this._cacheTimeMs;
+            this._cacheSwapInfoForPair(takerToken, makerToken, swapInfo, expiresAt);
+        }
+        return this._cache[key].balancerSwaps;
+    }
+
+    protected _cacheSwapInfoForPair(
+        takerToken: string,
+        makerToken: string,
+        swapInfo: BalancerSwaps,
+        expiresAt: number,
+    ): void {
+        const key = JSON.stringify([takerToken, makerToken]);
+        this._cache[key] = {
+            expiresAt,
+            balancerSwaps: swapInfo,
+        };
+    }
+
+    protected abstract _fetchSwapInfoForPairAsync(takerToken: string, makerToken: string): Promise<BalancerSwaps>;
+}

packages/asset-swapper/src/utils/market_operation_utils/pools_cache/sgPoolDataService.ts

@@ -0,0 +1,114 @@
+import { ChainId } from '@0x/contract-addresses';
+import { logUtils } from '@0x/utils';
+import { PoolDataService, SubgraphPoolBase } from '@balancer-labs/sdk';
+import { gql, request } from 'graphql-request';
+
+const queryWithLinear = gql`
+    query fetchTopPoolsWithLinear($maxPoolsFetched: Int!) {
+        pools: pools(
+            first: $maxPoolsFetched
+            where: { swapEnabled: true }
+            orderBy: totalLiquidity
+            orderDirection: desc
+        ) {
+            id
+            address
+            poolType
+            swapFee
+            totalShares
+            tokens {
+                address
+                balance
+                decimals
+                weight
+                priceRate
+            }
+            tokensList
+            totalWeight
+            amp
+            expiryTime
+            unitSeconds
+            principalToken
+            baseToken
+            swapEnabled
+            wrappedIndex
+            mainIndex
+            lowerTarget
+            upperTarget
+        }
+    }
+`;
+
+const queryWithOutLinear = gql`
+    query fetchTopPoolsWithoutLinear($maxPoolsFetched: Int!) {
+        pools: pools(
+            first: $maxPoolsFetched
+            where: { swapEnabled: true }
+            orderBy: totalLiquidity
+            orderDirection: desc
+        ) {
+            id
+            address
+            poolType
+            swapFee
+            totalShares
+            tokens {
+                address
+                balance
+                decimals
+                weight
+                priceRate
+            }
+            tokensList
+            totalWeight
+            amp
+            expiryTime
+            unitSeconds
+            principalToken
+            baseToken
+            swapEnabled
+        }
+    }
+`;
+
+const QUERY_BY_CHAIN_ID: { [chainId: number]: string } = {
+    [ChainId.Mainnet]: queryWithLinear,
+    [ChainId.Polygon]: queryWithOutLinear,
+};
+
+const DEFAULT_MAX_POOLS_FETCHED = 96;
+
+/**
+ * Simple service to query required info from Subgraph for Balancer Pools.
+ * Because Balancer Subgraphs have slightly different schema depending on network the queries are adjusted as needed.
+ */
+export class SubgraphPoolDataService implements PoolDataService {
+    private readonly _gqlQuery: string | undefined;
+
+    constructor(
+        private readonly _config: {
+            chainId: number;
+            subgraphUrl: string | null;
+            maxPoolsFetched?: number;
+        },
+    ) {
+        this._config.maxPoolsFetched = this._config.maxPoolsFetched || DEFAULT_MAX_POOLS_FETCHED;
+        this._gqlQuery = QUERY_BY_CHAIN_ID[this._config.chainId];
+    }
+
+    // tslint:disable-next-line: async-suffix
+    public async getPools(): Promise<SubgraphPoolBase[]> {
+        if (!this._gqlQuery || !this._config.subgraphUrl) {
+            return [];
+        }
+        try {
+            const { pools } = await request<{ pools: SubgraphPoolBase[] }>(this._config.subgraphUrl, this._gqlQuery, {
+                maxPoolsFetched: this._config.maxPoolsFetched,
+            });
+            return pools;
+        } catch (err) {
+            logUtils.warn(`Failed to fetch BalancerV2 subgraph pools: ${err.message}`);
+            return [];
+        }
+    }
+}

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

@@ -5,9 +5,8 @@ import { SamplerOverrides } from '../../types';
 import { ERC20BridgeSamplerContract } from '../../wrappers';
 
 import { BancorService } from './bancor_service';
-import { PoolsCache } from './pools_cache';
-import { SamplerOperations } from './sampler_operations';
-import { BatchedOperation, ERC20BridgeSource, LiquidityProviderRegistry, TokenAdjacencyGraph } from './types';
+import { PoolsCacheMap, SamplerOperations } from './sampler_operations';
+import { BatchedOperation, LiquidityProviderRegistry, TokenAdjacencyGraph } from './types';
 
 /**
  * Generate sample amounts up to `maxFillAmount`.
@@ -37,7 +36,7 @@ export class DexOrderSampler extends SamplerOperations {
         public readonly chainId: ChainId,
         _samplerContract: ERC20BridgeSamplerContract,
         private readonly _samplerOverrides?: SamplerOverrides,
-        poolsCaches?: { [key in ERC20BridgeSource]: PoolsCache },
+        poolsCaches?: PoolsCacheMap,
         tokenAdjacencyGraph?: TokenAdjacencyGraph,
         liquidityProviderRegistry?: LiquidityProviderRegistry,
         bancorServiceFn: () => Promise<BancorService | undefined> = async () => undefined,

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

@@ -4,6 +4,7 @@ import { BigNumber, logUtils } from '@0x/utils';
 import * as _ from 'lodash';
 
 import { AaveV2Sampler } from '../../noop_samplers/AaveV2Sampler';
+import { GeistSampler } from '../../noop_samplers/GeistSampler';
 import { SamplerCallResult, SignedNativeOrder } from '../../types';
 import { ERC20BridgeSamplerContract } from '../../wrappers';
 
@@ -32,9 +33,7 @@ import {
     KYBER_CONFIG_BY_CHAIN_ID,
     KYBER_DMM_ROUTER_BY_CHAIN_ID,
     LIDO_INFO_BY_CHAIN,
-    LINKSWAP_ROUTER_BY_CHAIN_ID,
     LIQUIDITY_PROVIDER_REGISTRY_BY_CHAIN_ID,
-    MAINNET_TOKENS,
     MAKER_PSM_INFO_BY_CHAIN_ID,
     MAX_UINT256,
     MOONISWAP_REGISTRIES_BY_CHAIN_ID,
@@ -46,9 +45,11 @@ import {
     UNISWAPV3_CONFIG_BY_CHAIN_ID,
     ZERO_AMOUNT,
 } from './constants';
+import { getGeistInfoForPair } from './geist_utils';
 import { getLiquidityProvidersForPair } from './liquidity_provider_utils';
 import { getIntermediateTokens } from './multihop_utils';
 import { BalancerPoolsCache, BalancerV2PoolsCache, CreamPoolsCache, PoolsCache } from './pools_cache';
+import { BalancerV2SwapInfoCache } from './pools_cache/balancer_v2_utils_new';
 import { SamplerContractOperation } from './sampler_contract_operation';
 import { SamplerNoOperation } from './sampler_no_operation';
 import { SourceFilters } from './source_filters';
@@ -56,6 +57,8 @@ import {
     AaveV2FillData,
     AaveV2Info,
     BalancerFillData,
+    BalancerSwapInfo,
+    BalancerV2BatchSwapFillData,
     BalancerV2FillData,
     BalancerV2PoolInfo,
     BancorFillData,
@@ -66,6 +69,8 @@ import {
     DexSample,
     DODOFillData,
     ERC20BridgeSource,
+    GeistFillData,
+    GeistInfo,
     GenericRouterFillData,
     HopInfo,
     KyberDmmFillData,
@@ -99,6 +104,10 @@ export const TWO_HOP_SOURCE_FILTERS = SourceFilters.all().exclude([
  */
 export const BATCH_SOURCE_FILTERS = SourceFilters.all().exclude([ERC20BridgeSource.MultiHop, ERC20BridgeSource.Native]);
 
+export type PoolsCacheMap = { [key in Exclude<SourcesWithPoolsCache, ERC20BridgeSource.BalancerV2>]: PoolsCache } & {
+    [ERC20BridgeSource.BalancerV2]: BalancerV2SwapInfoCache | undefined;
+};
+
 // tslint:disable:no-inferred-empty-object-type no-unbound-method
 
 /**
@@ -107,7 +116,7 @@ export const BATCH_SOURCE_FILTERS = SourceFilters.all().exclude([ERC20BridgeSour
  */
 export class SamplerOperations {
     public readonly liquidityProviderRegistry: LiquidityProviderRegistry;
-    public readonly poolsCaches: { [key in SourcesWithPoolsCache]: PoolsCache };
+    public readonly poolsCaches: PoolsCacheMap;
     public readonly aaveReservesCache: AaveV2ReservesCache | undefined;
     public readonly compoundCTokenCache: CompoundCTokenCache | undefined;
     protected _bancorService?: BancorService;
@@ -122,7 +131,7 @@ export class SamplerOperations {
     constructor(
         public readonly chainId: ChainId,
         protected readonly _samplerContract: ERC20BridgeSamplerContract,
-        poolsCaches?: { [key in SourcesWithPoolsCache]: PoolsCache },
+        poolsCaches?: PoolsCacheMap,
         protected readonly tokenAdjacencyGraph: TokenAdjacencyGraph = { default: [] },
         liquidityProviderRegistry: LiquidityProviderRegistry = {},
         bancorServiceFn: () => Promise<BancorService | undefined> = async () => undefined,
@@ -134,13 +143,16 @@ export class SamplerOperations {
         this.poolsCaches = poolsCaches
             ? poolsCaches
             : {
-                  [ERC20BridgeSource.BalancerV2]: new BalancerV2PoolsCache(chainId),
                   [ERC20BridgeSource.Beethovenx]: new BalancerV2PoolsCache(
                       chainId,
                       BEETHOVEN_X_SUBGRAPH_URL_BY_CHAIN[chainId],
                   ),
                   [ERC20BridgeSource.Balancer]: new BalancerPoolsCache(),
                   [ERC20BridgeSource.Cream]: new CreamPoolsCache(),
+                  [ERC20BridgeSource.BalancerV2]:
+                      BALANCER_V2_VAULT_ADDRESS_BY_CHAIN[chainId] === NULL_ADDRESS
+                          ? undefined
+                          : new BalancerV2SwapInfoCache(chainId),
               };
 
         const aaveSubgraphUrl = AAVE_V2_SUBGRAPH_URL_BY_CHAIN_ID[chainId];
@@ -560,6 +572,49 @@ export class SamplerOperations {
         });
     }
 
+    public getBalancerV2MultihopSellQuotes(
+        vault: string,
+        quoteSwaps: BalancerSwapInfo, // Should always be sell swap steps.
+        fillSwaps: BalancerSwapInfo, // Should always be sell swap steps.
+        takerFillAmounts: BigNumber[],
+        source: ERC20BridgeSource,
+    ): SourceQuoteOperation<BalancerV2BatchSwapFillData> {
+        const quoteSwapSteps = quoteSwaps.swapSteps.map(s => ({
+            ...s,
+            assetInIndex: new BigNumber(s.assetInIndex),
+            assetOutIndex: new BigNumber(s.assetOutIndex),
+        }));
+        return new SamplerContractOperation({
+            source,
+            fillData: { vault, swapSteps: fillSwaps.swapSteps, assets: fillSwaps.assets },
+            contract: this._samplerContract,
+            function: this._samplerContract.sampleMultihopSellsFromBalancerV2,
+            params: [vault, quoteSwapSteps, quoteSwaps.assets, takerFillAmounts],
+        });
+    }
+
+    public getBalancerV2MultihopBuyQuotes(
+        vault: string,
+        quoteSwaps: BalancerSwapInfo, // Should always be buy swap steps.
+        fillSwaps: BalancerSwapInfo, // Should always be a sell quote.
+        makerFillAmounts: BigNumber[],
+        source: ERC20BridgeSource,
+    ): SourceQuoteOperation<BalancerV2BatchSwapFillData> {
+        const quoteSwapSteps = quoteSwaps.swapSteps.map(s => ({
+            ...s,
+            assetInIndex: new BigNumber(s.assetInIndex),
+            assetOutIndex: new BigNumber(s.assetOutIndex),
+        }));
+        return new SamplerContractOperation({
+            source,
+            // NOTE: fillData is set up for sells but quote function is set up for buys.
+            fillData: { vault, swapSteps: fillSwaps.swapSteps, assets: fillSwaps.assets },
+            contract: this._samplerContract,
+            function: this._samplerContract.sampleMultihopBuysFromBalancerV2,
+            params: [vault, quoteSwapSteps, quoteSwaps.assets, makerFillAmounts],
+        });
+    }
+
     public getBalancerV2SellQuotes(
         poolInfo: BalancerV2PoolInfo,
         makerToken: string,
@@ -767,16 +822,17 @@ export class SamplerOperations {
             function: this._samplerContract.sampleSellsFromUniswapV3,
             params: [quoter, tokenAddressPath, takerFillAmounts],
             callback: (callResults: string, fillData: UniswapV3FillData): BigNumber[] => {
-                const [paths, samples] = this._samplerContract.getABIDecodedReturnData<[string[], BigNumber[]]>(
-                    'sampleSellsFromUniswapV3',
-                    callResults,
-                );
+                const [paths, gasUsed, samples] = this._samplerContract.getABIDecodedReturnData<
+                    [string[], BigNumber[], BigNumber[]]
+                >('sampleSellsFromUniswapV3', callResults);
                 fillData.router = router;
                 fillData.tokenAddressPath = tokenAddressPath;
                 fillData.pathAmounts = paths.map((uniswapPath, i) => ({
                     uniswapPath,
                     inputAmount: takerFillAmounts[i],
+                    gasUsed: gasUsed[i].toNumber(),
                 }));
+
                 return samples;
             },
         });
@@ -795,15 +851,15 @@ export class SamplerOperations {
             function: this._samplerContract.sampleBuysFromUniswapV3,
             params: [quoter, tokenAddressPath, makerFillAmounts],
             callback: (callResults: string, fillData: UniswapV3FillData): BigNumber[] => {
-                const [paths, samples] = this._samplerContract.getABIDecodedReturnData<[string[], BigNumber[]]>(
-                    'sampleBuysFromUniswapV3',
-                    callResults,
-                );
+                const [paths, gasUsed, samples] = this._samplerContract.getABIDecodedReturnData<
+                    [string[], BigNumber[], BigNumber[]]
+                >('sampleBuysFromUniswapV3', callResults);
                 fillData.router = router;
                 fillData.tokenAddressPath = tokenAddressPath;
                 fillData.pathAmounts = paths.map((uniswapPath, i) => ({
                     uniswapPath,
                     inputAmount: makerFillAmounts[i],
+                    gasUsed: gasUsed[i].toNumber(),
                 }));
                 return samples;
             },
@@ -1151,6 +1207,34 @@ export class SamplerOperations {
         });
     }
 
+    // tslint:disable-next-line:prefer-function-over-method
+    public getGeistSellQuotes(
+        geistInfo: GeistInfo,
+        makerToken: string,
+        takerToken: string,
+        takerFillAmounts: BigNumber[],
+    ): SourceQuoteOperation<GeistFillData> {
+        return new SamplerNoOperation({
+            source: ERC20BridgeSource.Geist,
+            fillData: { ...geistInfo, takerToken },
+            callback: () => GeistSampler.sampleSellsFromGeist(geistInfo, takerToken, makerToken, takerFillAmounts),
+        });
+    }
+
+    // tslint:disable-next-line:prefer-function-over-method
+    public getGeistBuyQuotes(
+        geistInfo: GeistInfo,
+        makerToken: string,
+        takerToken: string,
+        makerFillAmounts: BigNumber[],
+    ): SourceQuoteOperation<GeistFillData> {
+        return new SamplerNoOperation({
+            source: ERC20BridgeSource.Geist,
+            fillData: { ...geistInfo, takerToken },
+            callback: () => GeistSampler.sampleBuysFromGeist(geistInfo, takerToken, makerToken, makerFillAmounts),
+        });
+    }
+
     public getCompoundSellQuotes(
         cToken: string,
         makerToken: string,
@@ -1266,7 +1350,7 @@ export class SamplerOperations {
         takerFillAmounts: BigNumber[],
         tokenAdjacencyGraph: TokenAdjacencyGraph = this.tokenAdjacencyGraph,
     ): SourceQuoteOperation[] {
-        // Find the adjacent tokens in the provided tooken adjacency graph,
+        // Find the adjacent tokens in the provided token adjacency graph,
         // e.g if this is DAI->USDC we may check for DAI->WETH->USDC
         const intermediateTokens = getIntermediateTokens(makerToken, takerToken, tokenAdjacencyGraph);
         // Drop out MultiHop and Native as we do not query those here.
@@ -1279,8 +1363,6 @@ export class SamplerOperations {
                     return [];
                 }
                 switch (source) {
-                    case ERC20BridgeSource.Eth2Dai:
-                        return [];
                     case ERC20BridgeSource.Uniswap:
                         return isValidAddress(UNISWAPV1_ROUTER_BY_CHAIN_ID[this.chainId])
                             ? this.getUniswapSellQuotes(
@@ -1313,6 +1395,7 @@ export class SamplerOperations {
                     case ERC20BridgeSource.SpiritSwap:
                     case ERC20BridgeSource.SpookySwap:
                     case ERC20BridgeSource.MorpheusSwap:
+                    case ERC20BridgeSource.BiSwap:
                         const uniLikeRouter = uniswapV2LikeRouterAddress(this.chainId, source);
                         if (!isValidAddress(uniLikeRouter)) {
                             return [];
@@ -1339,8 +1422,6 @@ export class SamplerOperations {
                         );
                     case ERC20BridgeSource.Curve:
                     case ERC20BridgeSource.CurveV2:
-                    case ERC20BridgeSource.Swerve:
-                    case ERC20BridgeSource.SnowSwap:
                     case ERC20BridgeSource.Nerve:
                     case ERC20BridgeSource.Synapse:
                     case ERC20BridgeSource.Belt:
@@ -1350,6 +1431,7 @@ export class SamplerOperations {
                     case ERC20BridgeSource.FirebirdOneSwap:
                     case ERC20BridgeSource.IronSwap:
                     case ERC20BridgeSource.ACryptos:
+                    case ERC20BridgeSource.MobiusMoney:
                         return getCurveLikeInfosForPair(this.chainId, takerToken, makerToken, source).map(pool =>
                             this.getCurveSellQuotes(
                                 pool,
@@ -1414,15 +1496,27 @@ export class SamplerOperations {
                                 ERC20BridgeSource.Balancer,
                             ),
                         );
-                    case ERC20BridgeSource.BalancerV2:
-                    case ERC20BridgeSource.Beethovenx:
+                    case ERC20BridgeSource.BalancerV2: {
+                        const cache = this.poolsCaches[source];
+                        if (!cache) {
+                            return [];
+                        }
+
+                        const swaps = cache.getCachedSwapInfoForPair(takerToken, makerToken);
+                        const vault = BALANCER_V2_VAULT_ADDRESS_BY_CHAIN[this.chainId];
+                        if (!swaps || vault === NULL_ADDRESS) {
+                            return [];
+                        }
+                        // Changed to retrieve queryBatchSwap for swap steps > 1 of length
+                        return swaps.swapInfoExactIn.map(swapInfo =>
+                            this.getBalancerV2MultihopSellQuotes(vault, swapInfo, swapInfo, takerFillAmounts, source),
+                        );
+                    }
+                    case ERC20BridgeSource.Beethovenx: {
                         const poolIds =
                             this.poolsCaches[source].getCachedPoolAddressesForPair(takerToken, makerToken) || [];
 
-                        const vault =
-                            source === ERC20BridgeSource.BalancerV2
-                                ? BALANCER_V2_VAULT_ADDRESS_BY_CHAIN[this.chainId]
-                                : BEETHOVEN_X_VAULT_ADDRESS_BY_CHAIN[this.chainId];
+                        const vault = BEETHOVEN_X_VAULT_ADDRESS_BY_CHAIN[this.chainId];
                         if (vault === NULL_ADDRESS) {
                             return [];
                         }
@@ -1435,6 +1529,7 @@ export class SamplerOperations {
                                 source,
                             ),
                         );
+                    }
                     case ERC20BridgeSource.Cream:
                         return (
                             this.poolsCaches[ERC20BridgeSource.Cream].getCachedPoolAddressesForPair(
@@ -1486,23 +1581,6 @@ export class SamplerOperations {
                             takerToken,
                             takerFillAmounts,
                         );
-                    case ERC20BridgeSource.Linkswap:
-                        if (!isValidAddress(LINKSWAP_ROUTER_BY_CHAIN_ID[this.chainId])) {
-                            return [];
-                        }
-                        return [
-                            [takerToken, makerToken],
-                            ...getIntermediateTokens(makerToken, takerToken, {
-                                default: [MAINNET_TOKENS.LINK, MAINNET_TOKENS.WETH],
-                            }).map(t => [takerToken, t, makerToken]),
-                        ].map(path =>
-                            this.getUniswapV2SellQuotes(
-                                LINKSWAP_ROUTER_BY_CHAIN_ID[this.chainId],
-                                path,
-                                takerFillAmounts,
-                                ERC20BridgeSource.Linkswap,
-                            ),
-                        );
                     case ERC20BridgeSource.MakerPsm:
                         const psmInfo = MAKER_PSM_INFO_BY_CHAIN_ID[this.chainId];
                         if (!isValidAddress(psmInfo.psmAddress)) {
@@ -1548,6 +1626,13 @@ export class SamplerOperations {
                         };
                         return this.getAaveV2SellQuotes(info, makerToken, takerToken, takerFillAmounts);
                     }
+                    case ERC20BridgeSource.Geist: {
+                        const info: GeistInfo | undefined = getGeistInfoForPair(takerToken, makerToken);
+                        if (!info) {
+                            return [];
+                        }
+                        return this.getGeistSellQuotes(info, makerToken, takerToken, takerFillAmounts);
+                    }
                     case ERC20BridgeSource.Compound: {
                         if (!this.compoundCTokenCache) {
                             return [];
@@ -1578,15 +1663,13 @@ export class SamplerOperations {
         takerToken: string,
         makerFillAmounts: BigNumber[],
     ): SourceQuoteOperation[] {
-        // Find the adjacent tokens in the provided tooken adjacency graph,
+        // Find the adjacent tokens in the provided token adjacency graph,
         // e.g if this is DAI->USDC we may check for DAI->WETH->USDC
         const intermediateTokens = getIntermediateTokens(makerToken, takerToken, this.tokenAdjacencyGraph);
         const _sources = BATCH_SOURCE_FILTERS.getAllowed(sources);
         return _.flatten(
             _sources.map((source): SourceQuoteOperation | SourceQuoteOperation[] => {
                 switch (source) {
-                    case ERC20BridgeSource.Eth2Dai:
-                        return [];
                     case ERC20BridgeSource.Uniswap:
                         return isValidAddress(UNISWAPV1_ROUTER_BY_CHAIN_ID[this.chainId])
                             ? this.getUniswapBuyQuotes(
@@ -1619,6 +1702,7 @@ export class SamplerOperations {
                     case ERC20BridgeSource.SpiritSwap:
                     case ERC20BridgeSource.SpookySwap:
                     case ERC20BridgeSource.MorpheusSwap:
+                    case ERC20BridgeSource.BiSwap:
                         const uniLikeRouter = uniswapV2LikeRouterAddress(this.chainId, source);
                         if (!isValidAddress(uniLikeRouter)) {
                             return [];
@@ -1645,8 +1729,6 @@ export class SamplerOperations {
                         );
                     case ERC20BridgeSource.Curve:
                     case ERC20BridgeSource.CurveV2:
-                    case ERC20BridgeSource.Swerve:
-                    case ERC20BridgeSource.SnowSwap:
                     case ERC20BridgeSource.Nerve:
                     case ERC20BridgeSource.Synapse:
                     case ERC20BridgeSource.Belt:
@@ -1656,6 +1738,7 @@ export class SamplerOperations {
                     case ERC20BridgeSource.FirebirdOneSwap:
                     case ERC20BridgeSource.IronSwap:
                     case ERC20BridgeSource.ACryptos:
+                    case ERC20BridgeSource.MobiusMoney:
                         return getCurveLikeInfosForPair(this.chainId, takerToken, makerToken, source).map(pool =>
                             this.getCurveBuyQuotes(
                                 pool,
@@ -1720,15 +1803,33 @@ export class SamplerOperations {
                                 ERC20BridgeSource.Balancer,
                             ),
                         );
-                    case ERC20BridgeSource.BalancerV2:
-                    case ERC20BridgeSource.Beethovenx:
+                    case ERC20BridgeSource.BalancerV2: {
+                        const cache = this.poolsCaches[source];
+                        if (!cache) {
+                            return [];
+                        }
+
+                        const swaps = cache.getCachedSwapInfoForPair(takerToken, makerToken);
+                        const vault = BALANCER_V2_VAULT_ADDRESS_BY_CHAIN[this.chainId];
+                        if (!swaps || vault === NULL_ADDRESS) {
+                            return [];
+                        }
+                        // Changed to retrieve queryBatchSwap for swap steps > 1 of length
+                        return swaps.swapInfoExactOut.map((quoteSwapInfo, i) =>
+                            this.getBalancerV2MultihopBuyQuotes(
+                                vault,
+                                quoteSwapInfo,
+                                swaps.swapInfoExactIn[i],
+                                makerFillAmounts,
+                                source,
+                            ),
+                        );
+                    }
+                    case ERC20BridgeSource.Beethovenx: {
                         const poolIds =
                             this.poolsCaches[source].getCachedPoolAddressesForPair(takerToken, makerToken) || [];
 
-                        const vault =
-                            source === ERC20BridgeSource.BalancerV2
-                                ? BALANCER_V2_VAULT_ADDRESS_BY_CHAIN[this.chainId]
-                                : BEETHOVEN_X_VAULT_ADDRESS_BY_CHAIN[this.chainId];
+                        const vault = BEETHOVEN_X_VAULT_ADDRESS_BY_CHAIN[this.chainId];
                         if (vault === NULL_ADDRESS) {
                             return [];
                         }
@@ -1741,6 +1842,7 @@ export class SamplerOperations {
                                 source,
                             ),
                         );
+                    }
                     case ERC20BridgeSource.Cream:
                         return (
                             this.poolsCaches[ERC20BridgeSource.Cream].getCachedPoolAddressesForPair(
@@ -1786,24 +1888,6 @@ export class SamplerOperations {
                         // Unimplemented
                         // return this.getBancorBuyQuotes(makerToken, takerToken, makerFillAmounts);
                         return [];
-                    case ERC20BridgeSource.Linkswap:
-                        if (!isValidAddress(LINKSWAP_ROUTER_BY_CHAIN_ID[this.chainId])) {
-                            return [];
-                        }
-                        return [
-                            [takerToken, makerToken],
-                            // LINK is the base asset in many of the pools on Linkswap
-                            ...getIntermediateTokens(makerToken, takerToken, {
-                                default: [MAINNET_TOKENS.LINK, MAINNET_TOKENS.WETH],
-                            }).map(t => [takerToken, t, makerToken]),
-                        ].map(path =>
-                            this.getUniswapV2BuyQuotes(
-                                LINKSWAP_ROUTER_BY_CHAIN_ID[this.chainId],
-                                path,
-                                makerFillAmounts,
-                                ERC20BridgeSource.Linkswap,
-                            ),
-                        );
                     case ERC20BridgeSource.MakerPsm:
                         const psmInfo = MAKER_PSM_INFO_BY_CHAIN_ID[this.chainId];
                         if (!isValidAddress(psmInfo.psmAddress)) {
@@ -1849,6 +1933,13 @@ export class SamplerOperations {
                         };
                         return this.getAaveV2BuyQuotes(info, makerToken, takerToken, makerFillAmounts);
                     }
+                    case ERC20BridgeSource.Geist: {
+                        const info: GeistInfo | undefined = getGeistInfoForPair(takerToken, makerToken);
+                        if (!info) {
+                            return [];
+                        }
+                        return this.getGeistBuyQuotes(info, makerToken, takerToken, makerFillAmounts);
+                    }
                     case ERC20BridgeSource.Compound: {
                         if (!this.compoundCTokenCache) {
                             return [];

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

@@ -8,9 +8,9 @@ import { BigNumber } from '@0x/utils';
 
 import { NativeOrderWithFillableAmounts, RfqFirmQuoteValidator, RfqRequestOpts } from '../../types';
 import { QuoteRequestor, V4RFQIndicativeQuoteMM } from '../../utils/quote_requestor';
+import { IRfqClient } from '../irfq_client';
 import { ExtendedQuoteReportSources, PriceComparisonsReport, QuoteReport } from '../quote_report_generator';
 
-import { CollapsedPath } from './path';
 import { SourceFilters } from './source_filters';
 
 /**
@@ -38,7 +38,6 @@ export enum ERC20BridgeSource {
     Native = 'Native',
     Uniswap = 'Uniswap',
     UniswapV2 = 'Uniswap_V2',
-    Eth2Dai = 'Eth2Dai',
     Kyber = 'Kyber',
     Curve = 'Curve',
     LiquidityProvider = 'LiquidityProvider',
@@ -52,13 +51,10 @@ export enum ERC20BridgeSource {
     Mooniswap = 'Mooniswap',
     MultiHop = 'MultiHop',
     Shell = 'Shell',
-    Swerve = 'Swerve',
-    SnowSwap = 'SnowSwap',
     SushiSwap = 'SushiSwap',
     Dodo = 'DODO',
     DodoV2 = 'DODO_V2',
     CryptoCom = 'CryptoCom',
-    Linkswap = 'Linkswap',
     KyberDmm = 'KyberDMM',
     Smoothy = 'Smoothy',
     Component = 'Component',
@@ -74,6 +70,7 @@ export enum ERC20BridgeSource {
     // BSC only
     PancakeSwap = 'PancakeSwap',
     PancakeSwapV2 = 'PancakeSwap_V2',
+    BiSwap = 'BiSwap',
     BakerySwap = 'BakerySwap',
     Nerve = 'Nerve',
     Belt = 'Belt',
@@ -97,11 +94,13 @@ export enum ERC20BridgeSource {
     TraderJoe = 'TraderJoe',
     // Celo only
     UbeSwap = 'UbeSwap',
+    MobiusMoney = 'MobiusMoney',
     // Fantom
     SpiritSwap = 'SpiritSwap',
     SpookySwap = 'SpookySwap',
     Beethovenx = 'Beethovenx',
     MorpheusSwap = 'MorpheusSwap',
+    Geist = 'Geist',
 }
 export type SourcesWithPoolsCache =
     | ERC20BridgeSource.Balancer
@@ -181,6 +180,12 @@ export interface AaveV2Info {
     underlyingToken: string;
 }
 
+export interface GeistInfo {
+    lendingPool: string;
+    gToken: string;
+    underlyingToken: string;
+}
+
 // Internal `fillData` field for `Fill` objects.
 export interface FillData {}
 
@@ -202,6 +207,23 @@ export interface CurveFillData extends FillData {
     pool: CurveInfo;
 }
 
+export interface BalancerBatchSwapStep {
+    poolId: string;
+    assetInIndex: number;
+    assetOutIndex: number;
+    amount: BigNumber;
+    userData: string;
+}
+
+export interface BalancerSwaps {
+    swapInfoExactIn: BalancerSwapInfo[];
+    swapInfoExactOut: BalancerSwapInfo[];
+}
+export interface BalancerSwapInfo {
+    assets: string[];
+    swapSteps: BalancerBatchSwapStep[];
+}
+
 export interface BalancerFillData extends FillData {
     poolAddress: string;
 }
@@ -211,6 +233,12 @@ export interface BalancerV2FillData extends FillData {
     poolId: string;
 }
 
+export interface BalancerV2BatchSwapFillData extends FillData {
+    vault: string;
+    swapSteps: BalancerBatchSwapStep[];
+    assets: string[];
+}
+
 export interface UniswapV2FillData extends FillData {
     tokenAddressPath: string[];
     router: string;
@@ -268,19 +296,34 @@ export interface HopInfo {
     returnData: string;
 }
 
+export interface UniswapV3PathAmount {
+    uniswapPath: string;
+    inputAmount: BigNumber;
+    gasUsed: number;
+}
 export interface UniswapV3FillData extends FillData {
     tokenAddressPath: string[];
     router: string;
-    pathAmounts: Array<{ uniswapPath: string; inputAmount: BigNumber }>;
+    pathAmounts: UniswapV3PathAmount[];
 }
 
 export interface KyberDmmFillData extends UniswapV2FillData {
     poolsPath: string[];
 }
 
-export interface FinalUniswapV3FillData extends Omit<UniswapV3FillData, 'uniswapPaths'> {
+/**
+ * Determines whether FillData is UniswapV3FillData or FinalUniswapV3FillData
+ */
+export function isFinalUniswapV3FillData(
+    data: UniswapV3FillData | FinalUniswapV3FillData,
+): data is FinalUniswapV3FillData {
+    return !!(data as FinalUniswapV3FillData).uniswapPath;
+}
+
+export interface FinalUniswapV3FillData extends Omit<UniswapV3FillData, 'pathAmounts'> {
     // The uniswap-encoded path that can fll the maximum input amount.
     uniswapPath: string;
+    gasUsed: number;
 }
 
 export interface LidoFillData extends FillData {
@@ -301,6 +344,13 @@ export interface CompoundFillData extends FillData {
     makerToken: string;
 }
 
+export interface GeistFillData extends FillData {
+    lendingPool: string;
+    gToken: string;
+    underlyingToken: string;
+    takerToken: string;
+}
+
 /**
  * Represents a node on a fill path.
  */
@@ -398,6 +448,7 @@ export type OptimizedMarketOrder =
     | OptimizedMarketOrderBase<NativeRfqOrderFillData>;
 
 export interface GetMarketOrdersRfqOpts extends RfqRequestOpts {
+    rfqClient?: IRfqClient;
     quoteRequestor?: QuoteRequestor;
     firmQuoteValidator?: RfqFirmQuoteValidator;
 }
@@ -550,7 +601,6 @@ export interface OptimizerResult {
     liquidityDelivered: CollapsedFill[] | DexSample<MultiHopFillData>;
     marketSideLiquidity: MarketSideLiquidity;
     adjustedRate: BigNumber;
-    unoptimizedPath?: CollapsedPath;
     takerAmountPerEth: BigNumber;
     makerAmountPerEth: BigNumber;
 }
@@ -582,6 +632,7 @@ export interface MarketSideLiquidity {
     takerTokenDecimals: number;
     quotes: RawQuotes;
     isRfqSupported: boolean;
+    blockNumber: number;
 }
 
 export interface RawQuotes {

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

@@ -106,6 +106,8 @@ export interface ExtendedQuoteReport {
     decodedUniqueId?: string;
     sourcesConsidered: ExtendedQuoteReportIndexedEntryOutbound[];
     sourcesDelivered: ExtendedQuoteReportIndexedEntryOutbound[] | undefined;
+    blockNumber: number | undefined;
+    estimatedGas: string;
 }
 
 export interface PriceComparisonsReport {
@@ -205,7 +207,7 @@ export function generateExtendedQuoteReportSources(
         ..._.flatten(
             quotes.dexQuotes.map(dex =>
                 dex
-                    .filter(quote => isDexSampleForTotalAmount(quote, marketOperation, amount))
+                    .filter(quote => isDexSampleForTotalAmount(quote, amount))
                     .map(quote => dexSampleToReportSource(quote, marketOperation)),
             ),
         ),
@@ -304,16 +306,8 @@ export function dexSampleToReportSource(ds: DexSample, marketOperation: MarketOp
  * Checks if a DEX sample is the one that represents the whole amount requested by taker
  * NOTE: this is used for the QuoteReport to filter samples
  */
-function isDexSampleForTotalAmount(ds: DexSample, marketOperation: MarketOperation, amount: BigNumber): boolean {
-    // input and output map to different values
-    // based on the market operation
-    if (marketOperation === MarketOperation.Buy) {
-        return ds.input === amount;
-    } else if (marketOperation === MarketOperation.Sell) {
-        return ds.output === amount;
-    } else {
-        throw new Error(`Unexpected marketOperation ${marketOperation}`);
-    }
+function isDexSampleForTotalAmount(ds: DexSample, amount: BigNumber): boolean {
+    return ds.input.eq(amount);
 }
 
 /**

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

@@ -0,0 +1,16 @@
+import { FillQuoteTransformerOrderType } from '@0x/protocol-utils';
+
+import { SignedNativeOrder } from '../types';
+
+import { RfqClientV1Quote } from './irfq_client';
+
+/**
+ * Converts a RfqClientRfqOrderFirmQuote to a SignedNativeOrder
+ */
+export const toSignedNativeOrder = (quote: RfqClientV1Quote): SignedNativeOrder => {
+    return {
+        type: FillQuoteTransformerOrderType.Rfq,
+        order: quote.order,
+        signature: quote.signature,
+    };
+};

packages/asset-swapper/test/artifacts.ts

@@ -8,16 +8,18 @@ import { ContractArtifact } from 'ethereum-types';
 import * as ApproximateBuys from '../test/generated-artifacts/ApproximateBuys.json';
 import * as BalanceChecker from '../test/generated-artifacts/BalanceChecker.json';
 import * as BalancerSampler from '../test/generated-artifacts/BalancerSampler.json';
+import * as BalancerV2BatchSampler from '../test/generated-artifacts/BalancerV2BatchSampler.json';
+import * as BalancerV2Common from '../test/generated-artifacts/BalancerV2Common.json';
 import * as BalancerV2Sampler from '../test/generated-artifacts/BalancerV2Sampler.json';
 import * as BancorSampler from '../test/generated-artifacts/BancorSampler.json';
 import * as CompoundSampler from '../test/generated-artifacts/CompoundSampler.json';
 import * as CurveSampler from '../test/generated-artifacts/CurveSampler.json';
 import * as DODOSampler from '../test/generated-artifacts/DODOSampler.json';
 import * as DODOV2Sampler from '../test/generated-artifacts/DODOV2Sampler.json';
-import * as DummyLiquidityProvider from '../test/generated-artifacts/DummyLiquidityProvider.json';
 import * as ERC20BridgeSampler from '../test/generated-artifacts/ERC20BridgeSampler.json';
 import * as FakeTaker from '../test/generated-artifacts/FakeTaker.json';
 import * as IBalancer from '../test/generated-artifacts/IBalancer.json';
+import * as IBalancerV2Vault from '../test/generated-artifacts/IBalancerV2Vault.json';
 import * as IBancor from '../test/generated-artifacts/IBancor.json';
 import * as ICurve from '../test/generated-artifacts/ICurve.json';
 import * as IKyberNetwork from '../test/generated-artifacts/IKyberNetwork.json';
@@ -35,12 +37,10 @@ import * as LiquidityProviderSampler from '../test/generated-artifacts/Liquidity
 import * as MakerPSMSampler from '../test/generated-artifacts/MakerPSMSampler.json';
 import * as MooniswapSampler from '../test/generated-artifacts/MooniswapSampler.json';
 import * as MStableSampler from '../test/generated-artifacts/MStableSampler.json';
-import * as MultiBridgeSampler from '../test/generated-artifacts/MultiBridgeSampler.json';
 import * as NativeOrderSampler from '../test/generated-artifacts/NativeOrderSampler.json';
 import * as SamplerUtils from '../test/generated-artifacts/SamplerUtils.json';
 import * as ShellSampler from '../test/generated-artifacts/ShellSampler.json';
 import * as SmoothySampler from '../test/generated-artifacts/SmoothySampler.json';
-import * as TestERC20BridgeSampler from '../test/generated-artifacts/TestERC20BridgeSampler.json';
 import * as TestNativeOrderSampler from '../test/generated-artifacts/TestNativeOrderSampler.json';
 import * as TwoHopSampler from '../test/generated-artifacts/TwoHopSampler.json';
 import * as UniswapSampler from '../test/generated-artifacts/UniswapSampler.json';
@@ -51,6 +51,8 @@ export const artifacts = {
     ApproximateBuys: ApproximateBuys as ContractArtifact,
     BalanceChecker: BalanceChecker as ContractArtifact,
     BalancerSampler: BalancerSampler as ContractArtifact,
+    BalancerV2BatchSampler: BalancerV2BatchSampler as ContractArtifact,
+    BalancerV2Common: BalancerV2Common as ContractArtifact,
     BalancerV2Sampler: BalancerV2Sampler as ContractArtifact,
     BancorSampler: BancorSampler as ContractArtifact,
     CompoundSampler: CompoundSampler as ContractArtifact,
@@ -66,7 +68,6 @@ export const artifacts = {
     MStableSampler: MStableSampler as ContractArtifact,
     MakerPSMSampler: MakerPSMSampler as ContractArtifact,
     MooniswapSampler: MooniswapSampler as ContractArtifact,
-    MultiBridgeSampler: MultiBridgeSampler as ContractArtifact,
     NativeOrderSampler: NativeOrderSampler as ContractArtifact,
     SamplerUtils: SamplerUtils as ContractArtifact,
     ShellSampler: ShellSampler as ContractArtifact,
@@ -77,6 +78,7 @@ export const artifacts = {
     UniswapV3Sampler: UniswapV3Sampler as ContractArtifact,
     UtilitySampler: UtilitySampler as ContractArtifact,
     IBalancer: IBalancer as ContractArtifact,
+    IBalancerV2Vault: IBalancerV2Vault as ContractArtifact,
     IBancor: IBancor as ContractArtifact,
     ICurve: ICurve as ContractArtifact,
     IKyberNetwork: IKyberNetwork as ContractArtifact,
@@ -87,7 +89,5 @@ export const artifacts = {
     ISmoothy: ISmoothy as ContractArtifact,
     IUniswapExchangeQuotes: IUniswapExchangeQuotes as ContractArtifact,
     IUniswapV2Router01: IUniswapV2Router01 as ContractArtifact,
-    DummyLiquidityProvider: DummyLiquidityProvider as ContractArtifact,
-    TestERC20BridgeSampler: TestERC20BridgeSampler as ContractArtifact,
     TestNativeOrderSampler: TestNativeOrderSampler as ContractArtifact,
 };

packages/asset-swapper/test/comparison_price_test.ts

@@ -66,6 +66,7 @@ const buyMarketSideLiquidity: MarketSideLiquidity = {
     },
     quoteSourceFilters: new SourceFilters(),
     isRfqSupported: false,
+    blockNumber: 1337420,
 };
 
 const sellMarketSideLiquidity: MarketSideLiquidity = {
@@ -87,6 +88,7 @@ const sellMarketSideLiquidity: MarketSideLiquidity = {
     },
     quoteSourceFilters: new SourceFilters(),
     isRfqSupported: false,
+    blockNumber: 1337420,
 };
 
 describe('getComparisonPrices', async () => {

packages/asset-swapper/test/exchange_proxy_swap_quote_consumer_test.ts

@@ -141,6 +141,7 @@ describe('ExchangeProxySwapQuoteConsumer', () => {
             ...(side === MarketOperation.Buy
                 ? { type: MarketOperation.Buy, makerTokenFillAmount }
                 : { type: MarketOperation.Sell, takerTokenFillAmount }),
+            blockNumber: 1337420,
         };
     }
 

packages/asset-swapper/test/market_operation_utils_test.ts

@@ -49,7 +49,7 @@ const MAKER_TOKEN = randomAddress();
 const TAKER_TOKEN = randomAddress();
 
 const DEFAULT_INCLUDED = [
-    ERC20BridgeSource.Eth2Dai,
+    ERC20BridgeSource.SushiSwap,
     ERC20BridgeSource.Kyber,
     ERC20BridgeSource.Native,
     ERC20BridgeSource.Uniswap,
@@ -319,7 +319,7 @@ describe('MarketOperationUtils tests', () => {
     const DEFAULT_RATES: RatesBySource = {
         ...ZERO_RATES,
         [ERC20BridgeSource.Native]: createDecreasingRates(NUM_SAMPLES),
-        [ERC20BridgeSource.Eth2Dai]: createDecreasingRates(NUM_SAMPLES),
+        [ERC20BridgeSource.SushiSwap]: createDecreasingRates(NUM_SAMPLES),
         [ERC20BridgeSource.Uniswap]: createDecreasingRates(NUM_SAMPLES),
         [ERC20BridgeSource.Kyber]: createDecreasingRates(NUM_SAMPLES),
     };
@@ -349,28 +349,6 @@ describe('MarketOperationUtils tests', () => {
             fromTokenIdx: 0,
             toTokenIdx: 1,
         },
-        [ERC20BridgeSource.Swerve]: {
-            pool: {
-                poolAddress: randomAddress(),
-                tokens: [TAKER_TOKEN, MAKER_TOKEN],
-                exchangeFunctionSelector: hexUtils.random(4),
-                sellQuoteFunctionSelector: hexUtils.random(4),
-                buyQuoteFunctionSelector: hexUtils.random(4),
-            },
-            fromTokenIdx: 0,
-            toTokenIdx: 1,
-        },
-        [ERC20BridgeSource.SnowSwap]: {
-            pool: {
-                poolAddress: randomAddress(),
-                tokens: [TAKER_TOKEN, MAKER_TOKEN],
-                exchangeFunctionSelector: hexUtils.random(4),
-                sellQuoteFunctionSelector: hexUtils.random(4),
-                buyQuoteFunctionSelector: hexUtils.random(4),
-            },
-            fromTokenIdx: 0,
-            toTokenIdx: 1,
-        },
         [ERC20BridgeSource.Smoothy]: {
             pool: {
                 poolAddress: randomAddress(),
@@ -404,9 +382,7 @@ describe('MarketOperationUtils tests', () => {
         [ERC20BridgeSource.Dodo]: {},
         [ERC20BridgeSource.DodoV2]: {},
         [ERC20BridgeSource.CryptoCom]: { tokenAddressPath: [] },
-        [ERC20BridgeSource.Linkswap]: { tokenAddressPath: [] },
         [ERC20BridgeSource.Uniswap]: { router: randomAddress() },
-        [ERC20BridgeSource.Eth2Dai]: { router: randomAddress() },
         [ERC20BridgeSource.MakerPsm]: {},
         [ERC20BridgeSource.KyberDmm]: { tokenAddressPath: [], router: randomAddress(), poolsPath: [] },
     };
@@ -483,7 +459,8 @@ describe('MarketOperationUtils tests', () => {
             });
 
             it('queries `numSamples` samples', async () => {
-                const numSamples = _.random(1, NUM_SAMPLES);
+                // neon-router requires at least 3 samples
+                const numSamples = _.random(3, NUM_SAMPLES);
                 let actualNumSamples = 0;
                 replaceSamplerOps({
                     getSellQuotes: (sources, makerToken, takerToken, amounts, wethAddress) => {
@@ -501,6 +478,7 @@ describe('MarketOperationUtils tests', () => {
                 await getMarketSellOrdersAsync(marketOperationUtils, ORDERS, FILL_AMOUNT, {
                     ...DEFAULT_OPTS,
                     numSamples,
+                    neonRouterNumSamples: numSamples,
                 });
                 expect(actualNumSamples).eq(numSamples);
             });
@@ -532,7 +510,7 @@ describe('MarketOperationUtils tests', () => {
             });
 
             it('does not poll DEXes in `excludedSources`', async () => {
-                const excludedSources = [ERC20BridgeSource.Uniswap, ERC20BridgeSource.Eth2Dai];
+                const excludedSources = [ERC20BridgeSource.Uniswap, ERC20BridgeSource.SushiSwap];
                 let sourcesPolled: ERC20BridgeSource[] = [];
                 replaceSamplerOps({
                     getSellQuotes: (sources, makerToken, takerToken, amounts, wethAddress) => {
@@ -562,7 +540,7 @@ describe('MarketOperationUtils tests', () => {
             });
 
             it('only polls DEXes in `includedSources`', async () => {
-                const includedSources = [ERC20BridgeSource.Uniswap, ERC20BridgeSource.Eth2Dai];
+                const includedSources = [ERC20BridgeSource.Uniswap, ERC20BridgeSource.SushiSwap];
                 let sourcesPolled: ERC20BridgeSource[] = [];
                 replaceSamplerOps({
                     getSellQuotes: (sources, makerToken, takerToken, amounts, wethAddress) => {
@@ -746,6 +724,7 @@ describe('MarketOperationUtils tests', () => {
                                 ],
                             },
                             isRfqSupported: true,
+                            blockNumber: 1337420,
                         };
                     });
                 const result = await mockedMarketOpUtils.object.getOptimizerResultAsync(
@@ -1054,7 +1033,7 @@ describe('MarketOperationUtils tests', () => {
                 const rates: RatesBySource = { ...DEFAULT_RATES };
                 rates[ERC20BridgeSource.Native] = [0.4, 0.3, 0.2, 0.1];
                 rates[ERC20BridgeSource.Uniswap] = [0.5, 0.05, 0.05, 0.05];
-                rates[ERC20BridgeSource.Eth2Dai] = [0.6, 0.05, 0.05, 0.05];
+                rates[ERC20BridgeSource.SushiSwap] = [0.6, 0.05, 0.05, 0.05];
                 rates[ERC20BridgeSource.Kyber] = [0, 0, 0, 0]; // unused
                 replaceSamplerOps({
                     getSellQuotes: createGetMultipleSellQuotesOperationFromRates(rates),
@@ -1068,7 +1047,7 @@ describe('MarketOperationUtils tests', () => {
                 const improvedOrders = improvedOrdersResponse.optimizedOrders;
                 const orderSources = improvedOrders.map(o => o.fills[0].source);
                 const expectedSources = [
-                    ERC20BridgeSource.Eth2Dai,
+                    ERC20BridgeSource.SushiSwap,
                     ERC20BridgeSource.Uniswap,
                     ERC20BridgeSource.Native,
                     ERC20BridgeSource.Native,
@@ -1078,14 +1057,15 @@ describe('MarketOperationUtils tests', () => {
 
             const ETH_TO_MAKER_RATE = 1.5;
 
-            it('factors in fees for native orders', async () => {
+            // TODO: disabled as this is not supported by neon-router
+            it.skip('factors in fees for native orders', async () => {
                 // Native orders will have the best rates but have fees,
                 // dropping their effective rates.
                 const nativeFeeRate = 0.06;
                 const rates: RatesBySource = {
                     [ERC20BridgeSource.Native]: [1, 0.99, 0.98, 0.97], // Effectively [0.94, 0.93, 0.92, 0.91]
                     [ERC20BridgeSource.Uniswap]: [0.96, 0.1, 0.1, 0.1],
-                    [ERC20BridgeSource.Eth2Dai]: [0.95, 0.1, 0.1, 0.1],
+                    [ERC20BridgeSource.SushiSwap]: [0.95, 0.1, 0.1, 0.1],
                     [ERC20BridgeSource.Kyber]: [0.1, 0.1, 0.1, 0.1],
                 };
                 const feeSchedule = {
@@ -1110,7 +1090,7 @@ describe('MarketOperationUtils tests', () => {
                 const expectedSources = [
                     ERC20BridgeSource.Native,
                     ERC20BridgeSource.Uniswap,
-                    ERC20BridgeSource.Eth2Dai,
+                    ERC20BridgeSource.SushiSwap,
                     ERC20BridgeSource.Native,
                 ];
                 expect(orderSources.sort()).to.deep.eq(expectedSources.sort());
@@ -1123,7 +1103,7 @@ describe('MarketOperationUtils tests', () => {
                 const rates: RatesBySource = {
                     [ERC20BridgeSource.Native]: [0.95, 0.1, 0.1, 0.1],
                     [ERC20BridgeSource.Kyber]: [0.1, 0.1, 0.1, 0.1],
-                    [ERC20BridgeSource.Eth2Dai]: [0.92, 0.1, 0.1, 0.1],
+                    [ERC20BridgeSource.SushiSwap]: [0.92, 0.1, 0.1, 0.1],
                     // Effectively [0.8, ~0.5, ~0, ~0]
                     [ERC20BridgeSource.Uniswap]: [1, 0.7, 0.2, 0.2],
                 };
@@ -1148,7 +1128,7 @@ describe('MarketOperationUtils tests', () => {
                 const orderSources = improvedOrders.map(o => o.fills[0].source);
                 const expectedSources = [
                     ERC20BridgeSource.Native,
-                    ERC20BridgeSource.Eth2Dai,
+                    ERC20BridgeSource.SushiSwap,
                     ERC20BridgeSource.Uniswap,
                 ];
                 expect(orderSources.sort()).to.deep.eq(expectedSources.sort());
@@ -1157,7 +1137,7 @@ describe('MarketOperationUtils tests', () => {
             it('can mix one concave source', async () => {
                 const rates: RatesBySource = {
                     [ERC20BridgeSource.Kyber]: [0, 0, 0, 0], // Won't use
-                    [ERC20BridgeSource.Eth2Dai]: [0.5, 0.85, 0.75, 0.75], // Concave
+                    [ERC20BridgeSource.SushiSwap]: [0.5, 0.85, 0.75, 0.75], // Concave
                     [ERC20BridgeSource.Uniswap]: [0.96, 0.2, 0.1, 0.1],
                     [ERC20BridgeSource.Native]: [0.95, 0.2, 0.2, 0.1],
                 };
@@ -1174,18 +1154,20 @@ describe('MarketOperationUtils tests', () => {
                 const improvedOrders = improvedOrdersResponse.optimizedOrders;
                 const orderSources = improvedOrders.map(o => o.fills[0].source);
                 const expectedSources = [
-                    ERC20BridgeSource.Eth2Dai,
+                    ERC20BridgeSource.SushiSwap,
                     ERC20BridgeSource.Uniswap,
                     ERC20BridgeSource.Native,
                 ];
                 expect(orderSources.sort()).to.deep.eq(expectedSources.sort());
             });
 
-            it('does not create a fallback if below maxFallbackSlippage', async () => {
+            // NOTE: Currently fallbacks for native orders are disabled
+            // TODO: remove this if we remove fallbacks completely
+            it.skip('does not create a fallback if below maxFallbackSlippage', async () => {
                 const rates: RatesBySource = {};
                 rates[ERC20BridgeSource.Native] = [1, 1, 0.01, 0.01];
                 rates[ERC20BridgeSource.Uniswap] = [1, 1, 0.01, 0.01];
-                rates[ERC20BridgeSource.Eth2Dai] = [0.49, 0.49, 0.49, 0.49];
+                rates[ERC20BridgeSource.SushiSwap] = [0.49, 0.49, 0.49, 0.49];
                 rates[ERC20BridgeSource.Kyber] = [0.35, 0.2, 0.01, 0.01];
                 replaceSamplerOps({
                     getSellQuotes: createGetMultipleSellQuotesOperationFromRates(rates),
@@ -1325,7 +1307,8 @@ describe('MarketOperationUtils tests', () => {
             });
 
             it('queries `numSamples` samples', async () => {
-                const numSamples = _.random(1, 16);
+                // neon-router requires at least 3 samples
+                const numSamples = _.random(3, 16);
                 let actualNumSamples = 0;
                 replaceSamplerOps({
                     getBuyQuotes: (sources, makerToken, takerToken, amounts, wethAddress) => {
@@ -1343,6 +1326,8 @@ describe('MarketOperationUtils tests', () => {
                 await getMarketBuyOrdersAsync(marketOperationUtils, ORDERS, FILL_AMOUNT, {
                     ...DEFAULT_OPTS,
                     numSamples,
+                    // Make sure to use same number of samples in neon-router for compatibility
+                    neonRouterNumSamples: numSamples,
                 });
                 expect(actualNumSamples).eq(numSamples);
             });
@@ -1377,7 +1362,7 @@ describe('MarketOperationUtils tests', () => {
             });
 
             it('does not poll DEXes in `excludedSources`', async () => {
-                const excludedSources = [ERC20BridgeSource.Uniswap, ERC20BridgeSource.Eth2Dai];
+                const excludedSources = [ERC20BridgeSource.Uniswap, ERC20BridgeSource.SushiSwap];
                 let sourcesPolled: ERC20BridgeSource[] = [];
                 replaceSamplerOps({
                     getBuyQuotes: (sources, makerToken, takerToken, amounts, wethAddress) => {
@@ -1407,7 +1392,7 @@ describe('MarketOperationUtils tests', () => {
             });
 
             it('only polls DEXes in `includedSources`', async () => {
-                const includedSources = [ERC20BridgeSource.Uniswap, ERC20BridgeSource.Eth2Dai];
+                const includedSources = [ERC20BridgeSource.Uniswap, ERC20BridgeSource.SushiSwap];
                 let sourcesPolled: ERC20BridgeSource[] = [];
                 replaceSamplerOps({
                     getBuyQuotes: (sources, makerToken, takerToken, amounts, wethAddress) => {
@@ -1494,11 +1479,12 @@ describe('MarketOperationUtils tests', () => {
                 }
             });
 
-            it('can mix convex sources', async () => {
+            // TODO: disabled as this is not supported by neon-router
+            it.skip('can mix convex sources', async () => {
                 const rates: RatesBySource = { ...ZERO_RATES };
                 rates[ERC20BridgeSource.Native] = [0.4, 0.3, 0.2, 0.1];
                 rates[ERC20BridgeSource.Uniswap] = [0.5, 0.05, 0.05, 0.05];
-                rates[ERC20BridgeSource.Eth2Dai] = [0.6, 0.05, 0.05, 0.05];
+                rates[ERC20BridgeSource.SushiSwap] = [0.6, 0.05, 0.05, 0.05];
                 replaceSamplerOps({
                     getBuyQuotes: createGetMultipleBuyQuotesOperationFromRates(rates),
                 });
@@ -1511,7 +1497,7 @@ describe('MarketOperationUtils tests', () => {
                 const improvedOrders = improvedOrdersResponse.optimizedOrders;
                 const orderSources = improvedOrders.map(o => o.fills[0].source);
                 const expectedSources = [
-                    ERC20BridgeSource.Eth2Dai,
+                    ERC20BridgeSource.SushiSwap,
                     ERC20BridgeSource.Uniswap,
                     ERC20BridgeSource.Native,
                     ERC20BridgeSource.Native,
@@ -1521,7 +1507,8 @@ describe('MarketOperationUtils tests', () => {
 
             const ETH_TO_TAKER_RATE = 1.5;
 
-            it('factors in fees for native orders', async () => {
+            // TODO: disabled as this is not supported by neon-router
+            it.skip('factors in fees for native orders', async () => {
                 // Native orders will have the best rates but have fees,
                 // dropping their effective rates.
                 const nativeFeeRate = 0.06;
@@ -1529,7 +1516,7 @@ describe('MarketOperationUtils tests', () => {
                     ...ZERO_RATES,
                     [ERC20BridgeSource.Native]: [1, 0.99, 0.98, 0.97], // Effectively [0.94, ~0.93, ~0.92, ~0.91]
                     [ERC20BridgeSource.Uniswap]: [0.96, 0.1, 0.1, 0.1],
-                    [ERC20BridgeSource.Eth2Dai]: [0.95, 0.1, 0.1, 0.1],
+                    [ERC20BridgeSource.SushiSwap]: [0.95, 0.1, 0.1, 0.1],
                     [ERC20BridgeSource.Kyber]: [0.1, 0.1, 0.1, 0.1],
                 };
                 const feeSchedule = {
@@ -1553,7 +1540,7 @@ describe('MarketOperationUtils tests', () => {
                 const orderSources = improvedOrders.map(o => o.fills[0].source);
                 const expectedSources = [
                     ERC20BridgeSource.Uniswap,
-                    ERC20BridgeSource.Eth2Dai,
+                    ERC20BridgeSource.SushiSwap,
                     ERC20BridgeSource.Native,
                     ERC20BridgeSource.Native,
                 ];
@@ -1569,7 +1556,7 @@ describe('MarketOperationUtils tests', () => {
                     [ERC20BridgeSource.Native]: [0.95, 0.1, 0.1, 0.1],
                     // Effectively [0.8, ~0.5, ~0, ~0]
                     [ERC20BridgeSource.Uniswap]: [1, 0.7, 0.2, 0.2],
-                    [ERC20BridgeSource.Eth2Dai]: [0.92, 0.1, 0.1, 0.1],
+                    [ERC20BridgeSource.SushiSwap]: [0.92, 0.1, 0.1, 0.1],
                 };
                 const feeSchedule = {
                     [ERC20BridgeSource.Uniswap]: _.constant(
@@ -1592,17 +1579,19 @@ describe('MarketOperationUtils tests', () => {
                 const orderSources = improvedOrders.map(o => o.fills[0].source);
                 const expectedSources = [
                     ERC20BridgeSource.Native,
-                    ERC20BridgeSource.Eth2Dai,
+                    ERC20BridgeSource.SushiSwap,
                     ERC20BridgeSource.Uniswap,
                 ];
                 expect(orderSources.sort()).to.deep.eq(expectedSources.sort());
             });
 
-            it('does not create a fallback if below maxFallbackSlippage', async () => {
+            // NOTE: Currently fallbacks for native orders are disabled
+            // TODO: remove this if we remove fallbacks completely
+            it.skip('does not create a fallback if below maxFallbackSlippage', async () => {
                 const rates: RatesBySource = { ...ZERO_RATES };
                 rates[ERC20BridgeSource.Native] = [1, 1, 0.01, 0.01];
                 rates[ERC20BridgeSource.Uniswap] = [1, 1, 0.01, 0.01];
-                rates[ERC20BridgeSource.Eth2Dai] = [0.49, 0.49, 0.49, 0.49];
+                rates[ERC20BridgeSource.SushiSwap] = [0.49, 0.49, 0.49, 0.49];
                 replaceSamplerOps({
                     getBuyQuotes: createGetMultipleBuyQuotesOperationFromRates(rates),
                 });

packages/asset-swapper/test/utils/swap_quote.ts

@@ -44,6 +44,7 @@ export async function getFullyFillableSwapQuoteWithNoFeesAsync(
         makerAmountPerEth: constants.ZERO_AMOUNT,
         makerTokenDecimals: 18,
         takerTokenDecimals: 18,
+        blockNumber: 1337420,
     };
 
     if (operation === MarketOperation.Buy) {

packages/asset-swapper/test/wrappers.ts

@@ -6,16 +6,18 @@
 export * from '../test/generated-wrappers/approximate_buys';
 export * from '../test/generated-wrappers/balance_checker';
 export * from '../test/generated-wrappers/balancer_sampler';
+export * from '../test/generated-wrappers/balancer_v2_batch_sampler';
+export * from '../test/generated-wrappers/balancer_v2_common';
 export * from '../test/generated-wrappers/balancer_v2_sampler';
 export * from '../test/generated-wrappers/bancor_sampler';
 export * from '../test/generated-wrappers/compound_sampler';
 export * from '../test/generated-wrappers/curve_sampler';
 export * from '../test/generated-wrappers/d_o_d_o_sampler';
 export * from '../test/generated-wrappers/d_o_d_o_v2_sampler';
-export * from '../test/generated-wrappers/dummy_liquidity_provider';
 export * from '../test/generated-wrappers/erc20_bridge_sampler';
 export * from '../test/generated-wrappers/fake_taker';
 export * from '../test/generated-wrappers/i_balancer';
+export * from '../test/generated-wrappers/i_balancer_v2_vault';
 export * from '../test/generated-wrappers/i_bancor';
 export * from '../test/generated-wrappers/i_curve';
 export * from '../test/generated-wrappers/i_kyber_network';
@@ -33,12 +35,10 @@ export * from '../test/generated-wrappers/liquidity_provider_sampler';
 export * from '../test/generated-wrappers/m_stable_sampler';
 export * from '../test/generated-wrappers/maker_p_s_m_sampler';
 export * from '../test/generated-wrappers/mooniswap_sampler';
-export * from '../test/generated-wrappers/multi_bridge_sampler';
 export * from '../test/generated-wrappers/native_order_sampler';
 export * from '../test/generated-wrappers/sampler_utils';
 export * from '../test/generated-wrappers/shell_sampler';
 export * from '../test/generated-wrappers/smoothy_sampler';
-export * from '../test/generated-wrappers/test_erc20_bridge_sampler';
 export * from '../test/generated-wrappers/test_native_order_sampler';
 export * from '../test/generated-wrappers/two_hop_sampler';
 export * from '../test/generated-wrappers/uniswap_sampler';

packages/asset-swapper/tsconfig.json

@@ -9,16 +9,18 @@
         "test/generated-artifacts/ApproximateBuys.json",
         "test/generated-artifacts/BalanceChecker.json",
         "test/generated-artifacts/BalancerSampler.json",
+        "test/generated-artifacts/BalancerV2BatchSampler.json",
+        "test/generated-artifacts/BalancerV2Common.json",
         "test/generated-artifacts/BalancerV2Sampler.json",
         "test/generated-artifacts/BancorSampler.json",
         "test/generated-artifacts/CompoundSampler.json",
         "test/generated-artifacts/CurveSampler.json",
         "test/generated-artifacts/DODOSampler.json",
         "test/generated-artifacts/DODOV2Sampler.json",
-        "test/generated-artifacts/DummyLiquidityProvider.json",
         "test/generated-artifacts/ERC20BridgeSampler.json",
         "test/generated-artifacts/FakeTaker.json",
         "test/generated-artifacts/IBalancer.json",
+        "test/generated-artifacts/IBalancerV2Vault.json",
         "test/generated-artifacts/IBancor.json",
         "test/generated-artifacts/ICurve.json",
         "test/generated-artifacts/IKyberNetwork.json",
@@ -36,12 +38,10 @@
         "test/generated-artifacts/MStableSampler.json",
         "test/generated-artifacts/MakerPSMSampler.json",
         "test/generated-artifacts/MooniswapSampler.json",
-        "test/generated-artifacts/MultiBridgeSampler.json",
         "test/generated-artifacts/NativeOrderSampler.json",
         "test/generated-artifacts/SamplerUtils.json",
         "test/generated-artifacts/ShellSampler.json",
         "test/generated-artifacts/SmoothySampler.json",
-        "test/generated-artifacts/TestERC20BridgeSampler.json",
         "test/generated-artifacts/TestNativeOrderSampler.json",
         "test/generated-artifacts/TwoHopSampler.json",
         "test/generated-artifacts/UniswapSampler.json",

packages/contract-addresses/CHANGELOG.json

@@ -1,4 +1,33 @@
 [
+    {
+        "version": "6.13.0",
+        "changes": [
+            {
+                "note": "Redeploy FQT on mainnet and polygon",
+                "pr": 462
+            }
+        ],
+        "timestamp": 1650611093
+    },
+    {
+        "timestamp": 1648739346,
+        "version": "6.12.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "6.12.0",
+        "changes": [
+            {
+                "note": "Update fantom fillQuoteTransformer addresses",
+                "pr": 398
+            }
+        ],
+        "timestamp": 1646225739
+    },
     {
         "version": "6.11.0",
         "changes": [

packages/contract-addresses/CHANGELOG.md

@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v6.13.0 - _April 22, 2022_
+
+    * Redeploy FQT on mainnet and polygon (#462)
+
+## v6.12.1 - _March 31, 2022_
+
+    * Dependencies updated
+
+## v6.12.0 - _March 2, 2022_
+
+    * Update fantom fillQuoteTransformer addresses (#398)
+
 ## v6.11.0 - _December 24, 2021_
 
     * Add Optimism addresses (#385)

packages/contract-addresses/addresses.json

@@ -37,7 +37,7 @@
             "wethTransformer": "0xb2bc06a4efb20fc6553a69dbfa49b7be938034a7",
             "payTakerTransformer": "0x4638a7ebe75b911b995d0ec73a81e4f85f41f24e",
             "affiliateFeeTransformer": "0xda6d9fc5998f550a094585cf9171f0e8ee3ac59f",
-            "fillQuoteTransformer": "0xb4fa284689c9784a60d840eb136bb16c5246191f",
+            "fillQuoteTransformer": "0xadbe39f2988a8be1c1120f05e28cc888b150c8a6",
             "positiveSlippageFeeTransformer": "0xa9416ce1dbde8d331210c07b5c253d94ee4cc3fd"
         }
     },
@@ -289,7 +289,7 @@
             "wethTransformer": "0xe309d011cc6f189a3e8dcba85922715a019fed38",
             "payTakerTransformer": "0x5ba7b9be86cda01cfbf56e0fb97184783be9dda1",
             "affiliateFeeTransformer": "0xbed27284b42e5684e987169cf1da09c5d6c49fa8",
-            "fillQuoteTransformer": "0xd3afdf4a8ea9183e76c9c2306cda03ea4afffea5",
+            "fillQuoteTransformer": "0xd4a518760030dae1adbde9496f8a3b478e83932a",
             "positiveSlippageFeeTransformer": "0x4cd8f1c0df4d40fcc1e073845d5f6f4ed5cc8dab"
         }
     },
@@ -415,7 +415,7 @@
             "wethTransformer": "0x9b6aa8f26a92108e7d1f66373d757bb955112703",
             "payTakerTransformer": "0x32df54951d33d7460e15fa59b1fcc262183ce4c2",
             "affiliateFeeTransformer": "0x67efa679a4b56c38713d478e649c88247f4f8e88",
-            "fillQuoteTransformer": "0x71de60a1b160094a3f6c7e1b883ff9337d639131",
+            "fillQuoteTransformer": "0x641efe8a57ad39353fe22f77d211ef6b17b0590b",
             "positiveSlippageFeeTransformer": "0xe87d69b285005cc82b53b844322652c49ed64600"
         }
     },

packages/contract-addresses/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contract-addresses",
-    "version": "6.11.0",
+    "version": "6.13.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -30,7 +30,7 @@
     "devDependencies": {
         "gitpkg": "https://github.com/0xProject/gitpkg.git",
         "shx": "^0.2.2",
-        "typescript": "4.2.2"
+        "typescript": "4.6.3"
     },
     "publishConfig": {
         "access": "public"

packages/contract-artifacts/CHANGELOG.json

@@ -1,4 +1,14 @@
 [
+    {
+        "version": "3.18.0",
+        "changes": [
+            {
+                "note": "Regenerate all artifacts",
+                "pr": 449
+            }
+        ],
+        "timestamp": 1648739346
+    },
     {
         "version": "3.17.0",
         "changes": [

packages/contract-artifacts/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.18.0 - _March 31, 2022_
+
+    * Regenerate all artifacts (#449)
+
 ## v3.17.0 - _February 22, 2022_
 
     * Update IZeroEx artifact (#429)

packages/contract-artifacts/artifacts/ERC20Token.json

@@ -135,10 +135,10 @@
         },
         "evm": {
             "bytecode": {
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             },
             "deployedBytecode": {
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     },