revert accidental change to uniswapv3 compute

* add kyber elastic to ethereum and polygon

* add to arbitrum and avalanche

* added kyber quoter/router dummy addresses

* move kyberelastic test to a different file, fix some bugs with addresses, blocknumber

* lint

.github/workflows/ci.yml

@@ -1,105 +1,137 @@
 name: Continuous Integration
 on:
-  push:
-    branches:
-      - main
-      - development
-  pull_request:
+    push:
+        branches:
+            - main
+            - development
+    pull_request:
 
 jobs:
-  build:
-    name: Build and test
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          submodules: recursive
+    build:
+        name: Build and test
+        runs-on: ubuntu-latest
+        env:
+            ARBITRUM_RPC_URL: ${{ secrets.ARBITRUM_RPC_URL }}
+            AVALANCHE_RPC_URL: ${{ secrets.AVALANCHE_RPC_URL }}
+            BSC_RPC_URL: ${{ secrets.BSC_RPC_URL }}
+            FANTOM_RPC_URL: ${{ secrets.FANTOM_RPC_URL }}
+            MAINNET_RPC_URL: ${{ secrets.MAINNET_RPC_URL }}
+            OPTIMISM_RPC_URL: ${{ secrets.OPTIMISM_RPC_URL }}
+            POLYGON_RPC_URL: ${{ secrets.POLYGON_RPC_URL }}
+        steps:
+            - uses: actions/checkout@v3
+              with:
+                  submodules: recursive
 
-      - name: Setup Node
-        uses: actions/setup-node@v3
-        with:
-          node-version: "16"
+            - name: Setup Node
+              uses: actions/setup-node@v3
+              with:
+                  node-version: '16'
 
-      - name: Install dependencies
-        run: yarn install --frozen-lockfile
+            - name: Install dependencies
+              run: yarn install --frozen-lockfile
 
-      - name: Build solution
-        run: yarn build
+            - name: Build solution
+              run: yarn build
 
-      - name: Lint typescript
-        run: yarn lint:ts
+            - name: Lint typescript
+              run: yarn lint:ts
 
-      - name: Lint solidity
-        run: yarn lint:contracts
+            - name: Lint solidity
+              run: yarn lint:contracts
 
-      - name: Run prettier
-        run: yarn prettier:ci
+            - name: Run prettier
+              run: yarn prettier:ci
 
-      - name: Check dependent packages have consistent versions
-        run: yarn deps_versions:ci
+            - name: Check dependent packages have consistent versions
+              run: yarn deps_versions:ci
 
-      - name: Check diff in docs
-        run: yarn diff_md_docs:ci
+            - name: Check diff in docs
+              run: yarn diff_md_docs:ci
 
-      - name: Check for broken links in markdown files
-        run: yarn test:links
+            - name: Check for broken links in markdown files
+              run: yarn test:links
 
-      - name: Test doc generation
-        run: yarn test:generate_docs:ci
+            - name: Test doc generation
+              run: yarn test:generate_docs:ci
 
-      - name: Test @0x/contracts-*
-        run: |
-                yarn wsrun \
-                  -p @0x/contracts-multisig \
-                  -p @0x/contracts-utils \
-                  -p @0x/contracts-exchange-libs \
-                  -p @0x/contracts-erc20 \
-                  -p @0x/contracts-erc721 \
-                  -p @0x/contracts-erc1155 \
-                  -p @0x/contracts-asset-proxy \
-                  -p @0x/contracts-broker \
-                  -p @0x/contracts-zero-ex \
-                  -m --serial -c test:ci
+            - name: Test @0x/contracts-*
+              run: |
+                  yarn wsrun \
+                    -p @0x/contracts-multisig \
+                    -p @0x/contracts-utils \
+                    -p @0x/contracts-exchange-libs \
+                    -p @0x/contracts-erc721 \
+                    -p @0x/contracts-erc1155 \
+                    -p @0x/contracts-asset-proxy \
+                    -p @0x/contracts-broker \
+                    -p @0x/contracts-zero-ex \
+                    -m --serial -c test:ci
 
-      - name: Test local @0x/contracts-*
-        run: |
-                yarn wsrun \
-                  -p @0x/contracts-test-utils \
-                  -p @0x/contract-addresses \
-                  -p @0x/contract-artifacts \
-                  -p @0x/contract-wrappers-test \
-                  -p @0x/order-utils \
-                  -m --serial -c test:ci
+            - name: Test local @0x/contracts-*
+              run: |
+                  yarn wsrun \
+                    -p @0x/contracts-test-utils \
+                    -p @0x/contract-addresses \
+                    -p @0x/contract-artifacts \
+                    -p @0x/contract-wrappers-test \
+                    -p @0x/order-utils \
+                    -m --serial -c test:ci
 
-      - name: Add foundry
-        uses: foundry-rs/foundry-toolchain@v1
-        with:
-          version: nightly
+            - name: Add foundry
+              uses: foundry-rs/foundry-toolchain@v1
+              with:
+                  version: nightly
 
-      - name: Run Forge build
-        working-directory: contracts/zero-ex
-        run: |
-          forge --version
-          forge build --sizes
+            - name: Run Forge build for erc20
+              working-directory: contracts/erc20
+              run: |
+                  forge --version
+                  forge build --sizes
 
-      - name: Run Forge tests
-        working-directory: contracts/zero-ex
-        run: |
-          forge test -vvv --gas-report
+            - name: Run Forge tests for erc20
+              working-directory: contracts/erc20
+              run: |
+                  forge test -vvv --gas-report
 
-      - name: Run Forge coverage
-        working-directory: contracts/zero-ex
-        run: |
-          forge coverage --report lcov
+            - name: Run Forge coverage for erc20
+              working-directory: contracts/erc20
+              run: |
+                  forge coverage --report summary --report lcov
 
-      - name: Upload the coverage report to Coveralls
-        uses: coverallsapp/github-action@master
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          base-path: ./contracts/zero-ex/
-          path-to-lcov: ./contracts/zero-ex/lcov.info
+            - name: Upload the coverage report to Coveralls
+              uses: coverallsapp/github-action@master
+              with:
+                  github-token: ${{ secrets.GITHUB_TOKEN }}
+                  base-path: ./contracts/erc20/
+                  path-to-lcov: ./contracts/erc20/lcov.info
 
+            - name: Run Forge build for zero-ex
+              working-directory: contracts/zero-ex
+              run: |
+                  forge --version
+                  forge build --sizes
 
+            - name: Run Forge tests for zero-ex
+              working-directory: contracts/zero-ex
+              run: |
+                  forge test -vvv --gas-report
 
+            - name: Run Forge coverage for zero-ex
+              working-directory: contracts/zero-ex
+              run: |
+                  forge coverage --report summary --report lcov
 
+            - name: Upload the coverage report to Coveralls
+              uses: coverallsapp/github-action@master
+              with:
+                  github-token: ${{ secrets.GITHUB_TOKEN }}
+                  base-path: ./contracts/zero-ex/
+                  path-to-lcov: ./contracts/zero-ex/lcov.info
 
+            - name: Check coverage threshold
+              uses: VeryGoodOpenSource/very_good_coverage@v2
+              with:
+                  path: ./contracts/zero-ex/lcov.info
+                  min_coverage: 6.98
+                  exclude: '**/tests'

.gitignore

@@ -82,6 +82,9 @@ generated-artifacts/
 # generated contract wrappers
 generated-wrappers/
 
+# forge std-lib
+contracts/zero-ex/contracts/deps/forge-std
+
 # foundry artifacts
 foundry-artifacts/
 

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "contracts/zero-ex/contracts/deps/forge-std"]
 	path = contracts/zero-ex/contracts/deps/forge-std
 	url = https://github.com/foundry-rs/forge-std
+[submodule "contracts/erc20/lib/forge-std"]
+	path = contracts/erc20/lib/forge-std
+	url = https://github.com/foundry-rs/forge-std

.solhint.json

@@ -7,7 +7,7 @@
         "avoid-tx-origin": "warn",
         "code-complexity": "off",
         "const-name-snakecase": "error",
-        "function-max-lines": "off",
+        "function-max-lines": ["error", 350],
         "max-line-length": ["error", 120],
         "no-inline-assembly": "off",
         "quotes": ["error", "double"],

.solhintignore

@@ -1,4 +1,4 @@
-contracts/erc20/contracts/src/ZRXToken.sol
+contracts/erc20/src/ZRXToken.sol
 node_modules/
 lib
 deps

contracts/erc20/.eslintrc

@@ -1,25 +0,0 @@
-{
-  "env": {
-      "es2021": true,
-      "node": true
-  },
-  "extends": ["eslint:recommended", "plugin:@typescript-eslint/recommended", "prettier"],
-  "overrides": [],
-  "parser": "@typescript-eslint/parser",
-  "parserOptions": {
-      "project": "./tsconfig.json",
-      "ecmaVersion": "latest",
-      "sourceType": "module"
-  },
-  "plugins": ["@typescript-eslint"],
-  "ignorePatterns": [
-      "lib/**/*",
-      "contracts/**/*",
-      "generated-wrappers/**/*",
-      "generated-artifacts/**/*",
-      "test/generated-wrappers/**/*",
-      "test/generated-artifacts/**/*"
-
-  ],
-  "rules": {}
-}

contracts/erc20/CHANGELOG.json

@@ -1,4 +1,22 @@
 [
+    {
+        "timestamp": 1675210931,
+        "version": "3.3.57",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1675105183,
+        "version": "3.3.56",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1674517560,
         "version": "3.3.55",

contracts/erc20/CHANGELOG.md

@@ -5,6 +5,18 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.0.0 - _February 16, 2023_
+
+    * Migrated package to foundry
+
+## v3.3.57 - _February 1, 2023_
+
+    * Dependencies updated
+
+## v3.3.56 - _January 30, 2023_
+
+    * Dependencies updated
+
 ## v3.3.55 - _January 23, 2023_
 
     * Dependencies updated

contracts/erc20/compiler.json

@@ -1,28 +0,0 @@
-{
-    "artifactsDir": "./test/generated-artifacts",
-    "contractsDir": "./contracts",
-    "useDockerisedSolc": false,
-    "isOfflineMode": false,
-    "shouldSaveStandardInput": true,
-    "compilerSettings": {
-        "evmVersion": "istanbul",
-        "optimizer": {
-            "enabled": true,
-            "runs": 1000000,
-            "details": { "yul": true, "deduplicate": true, "cse": true, "constantOptimizer": true }
-        },
-        "outputSelection": {
-            "*": {
-                "*": [
-                    "abi",
-                    "devdoc",
-                    "evm.bytecode.object",
-                    "evm.bytecode.sourceMap",
-                    "evm.deployedBytecode.object",
-                    "evm.deployedBytecode.sourceMap",
-                    "devdoc"
-                ]
-            }
-        }
-    }
-}

contracts/erc20/contracts/src/ERC20Token.sol

@@ -1,93 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./interfaces/IERC20Token.sol";
-
-contract ERC20Token is IERC20Token {
-    mapping(address => uint256) internal balances;
-    mapping(address => mapping(address => uint256)) internal allowed;
-
-    uint256 internal _totalSupply;
-
-    /// @dev send `value` token to `to` from `msg.sender`
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    /// @return True if transfer was successful
-    function transfer(address _to, uint256 _value) external returns (bool) {
-        require(balances[msg.sender] >= _value, "ERC20_INSUFFICIENT_BALANCE");
-        require(balances[_to] + _value >= balances[_to], "UINT256_OVERFLOW");
-
-        balances[msg.sender] -= _value;
-        balances[_to] += _value;
-
-        emit Transfer(msg.sender, _to, _value);
-
-        return true;
-    }
-
-    /// @dev send `value` token to `to` from `from` on the condition it is approved by `from`
-    /// @param _from The address of the sender
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    /// @return True if transfer was successful
-    function transferFrom(address _from, address _to, uint256 _value) external returns (bool) {
-        require(balances[_from] >= _value, "ERC20_INSUFFICIENT_BALANCE");
-        require(allowed[_from][msg.sender] >= _value, "ERC20_INSUFFICIENT_ALLOWANCE");
-        require(balances[_to] + _value >= balances[_to], "UINT256_OVERFLOW");
-
-        balances[_to] += _value;
-        balances[_from] -= _value;
-        allowed[_from][msg.sender] -= _value;
-
-        emit Transfer(_from, _to, _value);
-
-        return true;
-    }
-
-    /// @dev `msg.sender` approves `_spender` to spend `_value` tokens
-    /// @param _spender The address of the account able to transfer the tokens
-    /// @param _value The amount of wei to be approved for transfer
-    /// @return Always true if the call has enough gas to complete execution
-    function approve(address _spender, uint256 _value) external returns (bool) {
-        allowed[msg.sender][_spender] = _value;
-        emit Approval(msg.sender, _spender, _value);
-        return true;
-    }
-
-    /// @dev Query total supply of token
-    /// @return Total supply of token
-    function totalSupply() external view returns (uint256) {
-        return _totalSupply;
-    }
-
-    /// @dev Query the balance of owner
-    /// @param _owner The address from which the balance will be retrieved
-    /// @return Balance of owner
-    function balanceOf(address _owner) external view returns (uint256) {
-        return balances[_owner];
-    }
-
-    /// @param _owner The address of the account owning tokens
-    /// @param _spender The address of the account able to transfer the tokens
-    /// @return Amount of remaining tokens allowed to spent
-    function allowance(address _owner, address _spender) external view returns (uint256) {
-        return allowed[_owner][_spender];
-    }
-}

contracts/erc20/contracts/src/LibERC20Token.sol

@@ -1,136 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "@0x/contracts-utils/contracts/src/LibRichErrors.sol";
-import "@0x/contracts-utils/contracts/src/LibBytes.sol";
-import "../src/interfaces/IERC20Token.sol";
-
-library LibERC20Token {
-    bytes private constant DECIMALS_CALL_DATA = hex"313ce567";
-
-    /// @dev Calls `IERC20Token(token).approve()`.
-    ///      Reverts if `false` is returned or if the return
-    ///      data length is nonzero and not 32 bytes.
-    /// @param token The address of the token contract.
-    /// @param spender The address that receives an allowance.
-    /// @param allowance The allowance to set.
-    function approve(address token, address spender, uint256 allowance) internal {
-        bytes memory callData = abi.encodeWithSelector(IERC20Token(0).approve.selector, spender, allowance);
-        _callWithOptionalBooleanResult(token, callData);
-    }
-
-    /// @dev Calls `IERC20Token(token).approve()` and sets the allowance to the
-    ///      maximum if the current approval is not already >= an amount.
-    ///      Reverts if `false` is returned or if the return
-    ///      data length is nonzero and not 32 bytes.
-    /// @param token The address of the token contract.
-    /// @param spender The address that receives an allowance.
-    /// @param amount The minimum allowance needed.
-    function approveIfBelow(address token, address spender, uint256 amount) internal {
-        if (IERC20Token(token).allowance(address(this), spender) < amount) {
-            approve(token, spender, uint256(-1));
-        }
-    }
-
-    /// @dev Calls `IERC20Token(token).transfer()`.
-    ///      Reverts if `false` is returned or if the return
-    ///      data length is nonzero and not 32 bytes.
-    /// @param token The address of the token contract.
-    /// @param to The address that receives the tokens
-    /// @param amount Number of tokens to transfer.
-    function transfer(address token, address to, uint256 amount) internal {
-        bytes memory callData = abi.encodeWithSelector(IERC20Token(0).transfer.selector, to, amount);
-        _callWithOptionalBooleanResult(token, callData);
-    }
-
-    /// @dev Calls `IERC20Token(token).transferFrom()`.
-    ///      Reverts if `false` is returned or if the return
-    ///      data length is nonzero and not 32 bytes.
-    /// @param token The address of the token contract.
-    /// @param from The owner of the tokens.
-    /// @param to The address that receives the tokens
-    /// @param amount Number of tokens to transfer.
-    function transferFrom(address token, address from, address to, uint256 amount) internal {
-        bytes memory callData = abi.encodeWithSelector(IERC20Token(0).transferFrom.selector, from, to, amount);
-        _callWithOptionalBooleanResult(token, callData);
-    }
-
-    /// @dev Retrieves the number of decimals for a token.
-    ///      Returns `18` if the call reverts.
-    /// @param token The address of the token contract.
-    /// @return tokenDecimals The number of decimals places for the token.
-    function decimals(address token) internal view returns (uint8 tokenDecimals) {
-        tokenDecimals = 18;
-        (bool didSucceed, bytes memory resultData) = token.staticcall(DECIMALS_CALL_DATA);
-        if (didSucceed && resultData.length == 32) {
-            tokenDecimals = uint8(LibBytes.readUint256(resultData, 0));
-        }
-    }
-
-    /// @dev Retrieves the allowance for a token, owner, and spender.
-    ///      Returns `0` if the call reverts.
-    /// @param token The address of the token contract.
-    /// @param owner The owner of the tokens.
-    /// @param spender The address the spender.
-    /// @return allowance The allowance for a token, owner, and spender.
-    function allowance(address token, address owner, address spender) internal view returns (uint256 allowance_) {
-        (bool didSucceed, bytes memory resultData) = token.staticcall(
-            abi.encodeWithSelector(IERC20Token(0).allowance.selector, owner, spender)
-        );
-        if (didSucceed && resultData.length == 32) {
-            allowance_ = LibBytes.readUint256(resultData, 0);
-        }
-    }
-
-    /// @dev Retrieves the balance for a token owner.
-    ///      Returns `0` if the call reverts.
-    /// @param token The address of the token contract.
-    /// @param owner The owner of the tokens.
-    /// @return balance The token balance of an owner.
-    function balanceOf(address token, address owner) internal view returns (uint256 balance) {
-        (bool didSucceed, bytes memory resultData) = token.staticcall(
-            abi.encodeWithSelector(IERC20Token(0).balanceOf.selector, owner)
-        );
-        if (didSucceed && resultData.length == 32) {
-            balance = LibBytes.readUint256(resultData, 0);
-        }
-    }
-
-    /// @dev Executes a call on address `target` with calldata `callData`
-    ///      and asserts that either nothing was returned or a single boolean
-    ///      was returned equal to `true`.
-    /// @param target The call target.
-    /// @param callData The abi-encoded call data.
-    function _callWithOptionalBooleanResult(address target, bytes memory callData) private {
-        (bool didSucceed, bytes memory resultData) = target.call(callData);
-        if (didSucceed) {
-            if (resultData.length == 0) {
-                return;
-            }
-            if (resultData.length == 32) {
-                uint256 result = LibBytes.readUint256(resultData, 0);
-                if (result == 1) {
-                    return;
-                }
-            }
-        }
-        LibRichErrors.rrevert(resultData);
-    }
-}

contracts/erc20/contracts/src/MintableERC20Token.sol

@@ -1,46 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "@0x/contracts-utils/contracts/src/LibSafeMath.sol";
-import "./UnlimitedAllowanceERC20Token.sol";
-
-contract MintableERC20Token is UnlimitedAllowanceERC20Token {
-    using LibSafeMath for uint256;
-
-    /// @dev Mints new tokens
-    /// @param _to Address of the beneficiary that will own the minted token
-    /// @param _value Amount of tokens to mint
-    function _mint(address _to, uint256 _value) internal {
-        balances[_to] = _value.safeAdd(balances[_to]);
-        _totalSupply = _totalSupply.safeAdd(_value);
-
-        emit Transfer(address(0), _to, _value);
-    }
-
-    /// @dev Mints new tokens
-    /// @param _owner Owner of tokens that will be burned
-    /// @param _value Amount of tokens to burn
-    function _burn(address _owner, uint256 _value) internal {
-        balances[_owner] = balances[_owner].safeSub(_value);
-        _totalSupply = _totalSupply.safeSub(_value);
-
-        emit Transfer(_owner, address(0), _value);
-    }
-}

contracts/erc20/contracts/src/UnlimitedAllowanceERC20Token.sol

@@ -1,48 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./ERC20Token.sol";
-
-contract UnlimitedAllowanceERC20Token is ERC20Token {
-    uint256 internal constant MAX_UINT = 2 ** 256 - 1;
-
-    /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance.
-    // See https://github.com/ethereum/EIPs/issues/717
-    /// @param _from Address to transfer from.
-    /// @param _to Address to transfer to.
-    /// @param _value Amount to transfer.
-    /// @return Success of transfer.
-    function transferFrom(address _from, address _to, uint256 _value) external returns (bool) {
-        uint256 allowance = allowed[_from][msg.sender];
-        require(balances[_from] >= _value, "ERC20_INSUFFICIENT_BALANCE");
-        require(allowance >= _value, "ERC20_INSUFFICIENT_ALLOWANCE");
-        require(balances[_to] + _value >= balances[_to], "UINT256_OVERFLOW");
-
-        balances[_to] += _value;
-        balances[_from] -= _value;
-        if (allowance < MAX_UINT) {
-            allowed[_from][msg.sender] -= _value;
-        }
-
-        emit Transfer(_from, _to, _value);
-
-        return true;
-    }
-}

contracts/erc20/contracts/src/interfaces/IERC20Token.sol

@@ -1,57 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-contract IERC20Token {
-    event Transfer(address indexed _from, address indexed _to, uint256 _value);
-
-    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
-
-    /// @dev send `value` token to `to` from `msg.sender`
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    /// @return True if transfer was successful
-    function transfer(address _to, uint256 _value) external returns (bool);
-
-    /// @dev send `value` token to `to` from `from` on the condition it is approved by `from`
-    /// @param _from The address of the sender
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    /// @return True if transfer was successful
-    function transferFrom(address _from, address _to, uint256 _value) external returns (bool);
-
-    /// @dev `msg.sender` approves `_spender` to spend `_value` tokens
-    /// @param _spender The address of the account able to transfer the tokens
-    /// @param _value The amount of wei to be approved for transfer
-    /// @return Always true if the call has enough gas to complete execution
-    function approve(address _spender, uint256 _value) external returns (bool);
-
-    /// @dev Query total supply of token
-    /// @return Total supply of token
-    function totalSupply() external view returns (uint256);
-
-    /// @param _owner The address from which the balance will be retrieved
-    /// @return Balance of owner
-    function balanceOf(address _owner) external view returns (uint256);
-
-    /// @param _owner The address of the account owning tokens
-    /// @param _spender The address of the account able to transfer the tokens
-    /// @return Amount of remaining tokens allowed to spent
-    function allowance(address _owner, address _spender) external view returns (uint256);
-}

contracts/erc20/contracts/src/interfaces/IEtherToken.sol

@@ -1,27 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./IERC20Token.sol";
-
-contract IEtherToken is IERC20Token {
-    function deposit() public payable;
-
-    function withdraw(uint256 amount) public;
-}

contracts/erc20/contracts/src/v08/IERC20TokenV08.sol

@@ -1,63 +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 ^0.8.0;
-
-interface IERC20TokenV08 {
-    event Transfer(address indexed from, address indexed to, uint256 value);
-
-    event Approval(address indexed owner, address indexed spender, uint256 value);
-
-    /// @dev send `value` token to `to` from `msg.sender`
-    /// @param to The address of the recipient
-    /// @param value The amount of token to be transferred
-    /// @return True if transfer was successful
-    function transfer(address to, uint256 value) external returns (bool);
-
-    /// @dev send `value` token to `to` from `from` on the condition it is approved by `from`
-    /// @param from The address of the sender
-    /// @param to The address of the recipient
-    /// @param value The amount of token to be transferred
-    /// @return True if transfer was successful
-    function transferFrom(address from, address to, uint256 value) external returns (bool);
-
-    /// @dev `msg.sender` approves `spender` to spend `value` tokens
-    /// @param spender The address of the account able to transfer the tokens
-    /// @param value The amount of wei to be approved for transfer
-    /// @return Always true if the call has enough gas to complete execution
-    function approve(address spender, uint256 value) external returns (bool);
-
-    /// @dev Query total supply of token
-    /// @return Total supply of token
-    function totalSupply() external view returns (uint256);
-
-    /// @dev Get the balance of `owner`.
-    /// @param owner The address from which the balance will be retrieved
-    /// @return Balance of owner
-    function balanceOf(address owner) external view returns (uint256);
-
-    /// @dev Get the allowance for `spender` to spend from `owner`.
-    /// @param owner The address of the account owning tokens
-    /// @param spender The address of the account able to transfer the tokens
-    /// @return Amount of remaining tokens allowed to spent
-    function allowance(address owner, address spender) external view returns (uint256);
-
-    /// @dev Get the number of decimals this token has.
-    function decimals() external view returns (uint8);
-}

contracts/erc20/contracts/test/DummyERC20Token.sol

@@ -1,61 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.5;
-
-import "@0x/contracts-utils/contracts/src/LibSafeMath.sol";
-import "@0x/contracts-utils/contracts/src/Ownable.sol";
-import "../src/MintableERC20Token.sol";
-
-contract DummyERC20Token is Ownable, MintableERC20Token {
-    using LibSafeMath for uint256;
-
-    string public name;
-    string public symbol;
-    uint256 public decimals;
-    uint256 public constant MAX_MINT_AMOUNT = 10000000000000000000000;
-
-    constructor(string memory _name, string memory _symbol, uint256 _decimals, uint256 _totalSupply) public {
-        name = _name;
-        symbol = _symbol;
-        decimals = _decimals;
-        _totalSupply = _totalSupply;
-        balances[msg.sender] = _totalSupply;
-    }
-
-    /// @dev Sets the balance of target address
-    /// @param _target Address or which balance will be updated
-    /// @param _value New balance of target address
-    function setBalance(address _target, uint256 _value) external onlyOwner {
-        uint256 currBalance = balances[_target];
-        if (_value < currBalance) {
-            _totalSupply = _totalSupply.safeSub(currBalance.safeSub(_value));
-        } else {
-            _totalSupply = _totalSupply.safeAdd(_value.safeSub(currBalance));
-        }
-        balances[_target] = _value;
-    }
-
-    /// @dev Mints new tokens for sender
-    /// @param _value Amount of tokens to mint
-    function mint(uint256 _value) external {
-        require(_value <= MAX_MINT_AMOUNT, "VALUE_TOO_LARGE");
-
-        _mint(msg.sender, _value);
-    }
-}

contracts/erc20/contracts/test/DummyMultipleReturnERC20Token.sol

@@ -1,46 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.5;
-
-import "./DummyERC20Token.sol";
-
-contract DummyMultipleReturnERC20Token is DummyERC20Token {
-    constructor(
-        string memory _name,
-        string memory _symbol,
-        uint256 _decimals,
-        uint256 _totalSupply
-    ) public DummyERC20Token(_name, _symbol, _decimals, _totalSupply) {}
-
-    /// @dev send `value` token to `to` from `from` on the condition it is approved by `from`
-    /// @param _from The address of the sender
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    function transferFrom(address _from, address _to, uint256 _value) external returns (bool) {
-        emit Transfer(_from, _to, _value);
-
-        // HACK: This contract will not compile if we remove `returns (bool)`, so we manually return 64 bytes
-        // (equiavalent to true, true)
-        assembly {
-            mstore(0, 1)
-            mstore(32, 1)
-            return(0, 64)
-        }
-    }
-}

contracts/erc20/contracts/test/DummyNoReturnERC20Token.sol

@@ -1,69 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.5;
-
-import "./DummyERC20Token.sol";
-
-contract DummyNoReturnERC20Token is DummyERC20Token {
-    constructor(
-        string memory _name,
-        string memory _symbol,
-        uint256 _decimals,
-        uint256 _totalSupply
-    ) public DummyERC20Token(_name, _symbol, _decimals, _totalSupply) {}
-
-    /// @dev send `value` token to `to` from `msg.sender`
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    function transfer(address _to, uint256 _value) external returns (bool) {
-        require(balances[msg.sender] >= _value, "ERC20_INSUFFICIENT_BALANCE");
-        require(balances[_to] + _value >= balances[_to], "UINT256_OVERFLOW");
-
-        balances[msg.sender] -= _value;
-        balances[_to] += _value;
-
-        emit Transfer(msg.sender, _to, _value);
-
-        // HACK: This contract will not compile if we remove `returns (bool)`, so we manually return no data
-        assembly {
-            return(0, 0)
-        }
-    }
-
-    /// @dev send `value` token to `to` from `from` on the condition it is approved by `from`
-    /// @param _from The address of the sender
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    function transferFrom(address _from, address _to, uint256 _value) external returns (bool) {
-        require(balances[_from] >= _value, "ERC20_INSUFFICIENT_BALANCE");
-        require(allowed[_from][msg.sender] >= _value, "ERC20_INSUFFICIENT_ALLOWANCE");
-        require(balances[_to] + _value >= balances[_to], "UINT256_OVERFLOW");
-
-        balances[_to] += _value;
-        balances[_from] -= _value;
-        allowed[_from][msg.sender] -= _value;
-
-        emit Transfer(_from, _to, _value);
-
-        // HACK: This contract will not compile if we remove `returns (bool)`, so we manually return no data
-        assembly {
-            return(0, 0)
-        }
-    }
-}

contracts/erc20/contracts/test/TestLibERC20Token.sol

@@ -1,73 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../src/LibERC20Token.sol";
-import "./TestLibERC20TokenTarget.sol";
-
-contract TestLibERC20Token {
-    TestLibERC20TokenTarget public target;
-
-    constructor() public {
-        target = new TestLibERC20TokenTarget();
-    }
-
-    function testApprove(
-        bool shouldRevert,
-        bytes calldata revertData,
-        bytes calldata returnData,
-        address spender,
-        uint256 allowance
-    ) external {
-        target.setBehavior(shouldRevert, revertData, returnData);
-        LibERC20Token.approve(address(target), spender, allowance);
-    }
-
-    function testTransfer(
-        bool shouldRevert,
-        bytes calldata revertData,
-        bytes calldata returnData,
-        address to,
-        uint256 amount
-    ) external {
-        target.setBehavior(shouldRevert, revertData, returnData);
-        LibERC20Token.transfer(address(target), to, amount);
-    }
-
-    function testTransferFrom(
-        bool shouldRevert,
-        bytes calldata revertData,
-        bytes calldata returnData,
-        address from,
-        address to,
-        uint256 amount
-    ) external {
-        target.setBehavior(shouldRevert, revertData, returnData);
-        LibERC20Token.transferFrom(address(target), from, to, amount);
-    }
-
-    function testDecimals(
-        bool shouldRevert,
-        bytes calldata revertData,
-        bytes calldata returnData
-    ) external returns (uint8) {
-        target.setBehavior(shouldRevert, revertData, returnData);
-        return LibERC20Token.decimals(address(target));
-    }
-}

contracts/erc20/contracts/test/TestLibERC20TokenTarget.sol

@@ -1,69 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-contract TestLibERC20TokenTarget {
-    event ApproveCalled(address spender, uint256 allowance);
-
-    event TransferCalled(address to, uint256 amount);
-
-    event TransferFromCalled(address from, address to, uint256 amount);
-
-    bool private _shouldRevert;
-    bytes private _revertData;
-    bytes private _returnData;
-
-    function setBehavior(bool shouldRevert, bytes calldata revertData, bytes calldata returnData) external {
-        _shouldRevert = shouldRevert;
-        _revertData = revertData;
-        _returnData = returnData;
-    }
-
-    function approve(address spender, uint256 allowance) external returns (bool) {
-        emit ApproveCalled(spender, allowance);
-        _execute();
-    }
-
-    function transfer(address to, uint256 amount) external returns (bool) {
-        emit TransferCalled(to, amount);
-        _execute();
-    }
-
-    function transferFrom(address from, address to, uint256 amount) external returns (bool) {
-        emit TransferFromCalled(from, to, amount);
-        _execute();
-    }
-
-    function decimals() external view returns (uint8) {
-        _execute();
-    }
-
-    function _execute() private view {
-        if (_shouldRevert) {
-            bytes memory revertData = _revertData;
-            assembly {
-                revert(add(revertData, 0x20), mload(revertData))
-            }
-        }
-        bytes memory returnData = _returnData;
-        assembly {
-            return(add(returnData, 0x20), mload(returnData))
-        }
-    }
-}

contracts/erc20/contracts/test/UntransferrableDummyERC20Token.sol

@@ -1,38 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.5;
-
-import "./DummyERC20Token.sol";
-
-contract UntransferrableDummyERC20Token is DummyERC20Token {
-    constructor(
-        string memory _name,
-        string memory _symbol,
-        uint256 _decimals,
-        uint256 _totalSupply
-    ) public DummyERC20Token(_name, _symbol, _decimals, _totalSupply) {}
-
-    /// @dev send `value` token to `to` from `from` on the condition it is approved by `from`
-    /// @param _from The address of the sender
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    function transferFrom(address _from, address _to, uint256 _value) external returns (bool) {
-        require(false, "TRANSFER_DISABLED");
-    }
-}

contracts/erc20/foundry.toml

@@ -0,0 +1,18 @@
+[profile.default]
+src = 'src'
+out = 'out'
+libs = [
+    'lib',
+    'node_modules',
+]
+remappings = [
+    '@0x/contracts-utils/=../utils/'
+]
+allow_paths = [
+    '../utils/'
+]
+
+fs_permissions = [{ access = "read", path = "./out/ZRXToken.sol" }]
+
+optimizer_runs = 1_000_000
+# See more config options https://github.com/foundry-rs/foundry/tree/master/config

contracts/erc20/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc20",
-    "version": "3.3.55",
+    "version": "4.0.0",
     "engines": {
         "node": ">=6.12"
     },
@@ -10,31 +10,10 @@
         "test": "test"
     },
     "scripts": {
-        "build": "yarn pre_build && tsc -b",
-        "build:ci": "yarn build",
-        "pre_build": "run-s compile contracts:gen generate_contract_wrappers contracts:copy",
-        "test": "yarn run_mocha",
-        "rebuild_and_test": "run-s build test",
-        "test:profiler": "SOLIDITY_PROFILER=true run-s build run_mocha profiler:report:html",
-        "test:trace": "SOLIDITY_REVERT_TRACE=true run-s build run_mocha",
-        "run_mocha": "mocha --require source-map-support/register --require make-promises-safe 'lib/test/**/*.js' --timeout 100000 --bail --exit",
-        "compile": "sol-compiler",
-        "watch": "sol-compiler -w",
-        "clean": "shx rm -rf lib test/generated-artifacts test/generated-wrappers generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --debug --abis  ${npm_package_config_abis} --output test/generated-wrappers --backend ethers",
-        "lint": "eslint src test",
-        "fix": "eslint --fix src test",
-        "test:ci": "yarn test",
-        "contracts:gen": "contracts-gen generate",
-        "contracts:copy": "contracts-gen copy",
+        "test:ci": "forge test",
         "docs:md": "ts-doc-gen --sourceDir='$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"
     },
-    "config": {
-        "publicInterfaceContracts": "DummyERC20Token,ERC20Token,WETH9,ZRXToken,DummyNoReturnERC20Token,DummyMultipleReturnERC20Token",
-        "abis": "./test/generated-artifacts/@(DummyERC20Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|ERC20Token|IERC20Token|IERC20TokenV06|IERC20TokenV08|IEtherToken|IEtherTokenV06|IEtherTokenV08|LibERC20Token|LibERC20TokenV06|LibERC20TokenV08|MintableERC20Token|TestLibERC20Token|TestLibERC20TokenTarget|UnlimitedAllowanceERC20Token|UntransferrableDummyERC20Token|WETH9|ZRXToken).json",
-        "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
-    },
     "repository": {
         "type": "git",
         "url": "https://github.com/0xProject/protocol.git"
@@ -43,43 +22,13 @@
     "bugs": {
         "url": "https://github.com/0xProject/protocol/issues"
     },
-    "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/tokens",
+    "homepage": "https://github.com/0xProject/protocol",
     "devDependencies": {
-        "@0x/abi-gen": "^5.8.1",
-        "@0x/contracts-gen": "^2.0.48",
-        "@0x/contracts-test-utils": "^5.4.45",
-        "@0x/contracts-utils": "^4.8.36",
-        "@0x/dev-utils": "^5.0.0",
-        "@0x/sol-compiler": "^4.8.2",
+        "@0x/contracts-utils": "^4.8.38",
         "@0x/ts-doc-gen": "^0.0.28",
-        "@0x/types": "^3.3.6",
-        "@0x/typescript-typings": "^5.3.1",
-        "@0x/utils": "^7.0.0",
-        "@0x/web3-wrapper": "^8.0.0",
-        "@types/lodash": "4.14.104",
-        "@types/mocha": "^5.2.7",
-        "@types/node": "12.12.54",
-        "@typescript-eslint/eslint-plugin": "^5.38.0",
-        "@typescript-eslint/parser": "^5.38.0",
-        "chai": "^4.0.1",
-        "chai-as-promised": "^7.1.0",
-        "chai-bignumber": "^3.0.0",
-        "dirty-chai": "^2.0.1",
-        "eslint": "^8.23.1",
-        "eslint-config-prettier": "^8.5.0",
-        "ethereum-types": "^3.7.1",
-        "lodash": "^4.17.11",
-        "make-promises-safe": "^1.1.0",
-        "mocha": "^6.2.0",
-        "npm-run-all": "^4.1.2",
-        "shx": "^0.2.2",
-        "typedoc": "~0.16.11",
-        "typescript": "4.6.3"
-    },
-    "dependencies": {
-        "@0x/base-contract": "^7.0.0",
-        "ethers": "~4.0.4"
+        "typedoc": "~0.16.11"
     },
+    "dependencies": {},
     "publishConfig": {
         "access": "public"
     },

contracts/erc20/src/IERC20Token.sol

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 /*
 
-  Copyright 2020 ZeroEx Intl.
+  Copyright 2023 ZeroEx Intl.
 
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -17,9 +17,9 @@
 
 */
 
-pragma solidity ^0.6.5;
+pragma solidity >=0.6.5 <0.9;
 
-interface IERC20TokenV06 {
+interface IERC20Token {
     event Transfer(address indexed from, address indexed to, uint256 value);
 
     event Approval(address indexed owner, address indexed spender, uint256 value);

contracts/erc20/src/IEtherToken.sol

@@ -19,9 +19,9 @@
 
 pragma solidity ^0.6.5;
 
-import "./IERC20TokenV06.sol";
+import "./IERC20Token.sol";
 
-interface IEtherTokenV06 is IERC20TokenV06 {
+interface IEtherToken is IERC20Token {
     /// @dev Wrap ether.
     function deposit() external payable;
 

contracts/erc20/src/artifacts.ts

@@ -1,21 +0,0 @@
-/*
- * -----------------------------------------------------------------------------
- * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
- * -----------------------------------------------------------------------------
- */
-import { ContractArtifact } from 'ethereum-types';
-
-import * as DummyERC20Token from '../generated-artifacts/DummyERC20Token.json';
-import * as DummyMultipleReturnERC20Token from '../generated-artifacts/DummyMultipleReturnERC20Token.json';
-import * as DummyNoReturnERC20Token from '../generated-artifacts/DummyNoReturnERC20Token.json';
-import * as ERC20Token from '../generated-artifacts/ERC20Token.json';
-import * as WETH9 from '../generated-artifacts/WETH9.json';
-import * as ZRXToken from '../generated-artifacts/ZRXToken.json';
-export const artifacts = {
-    DummyERC20Token: DummyERC20Token as ContractArtifact,
-    ERC20Token: ERC20Token as ContractArtifact,
-    WETH9: WETH9 as ContractArtifact,
-    ZRXToken: ZRXToken as any as ContractArtifact,
-    DummyNoReturnERC20Token: DummyNoReturnERC20Token as ContractArtifact,
-    DummyMultipleReturnERC20Token: DummyMultipleReturnERC20Token as ContractArtifact,
-};

contracts/erc20/src/index.ts

@@ -1,47 +0,0 @@
-export {
-    DummyERC20TokenContract,
-    DummyMultipleReturnERC20TokenContract,
-    DummyNoReturnERC20TokenContract,
-    WETH9Contract,
-    WETH9Events,
-    WETH9DepositEventArgs,
-    WETH9TransferEventArgs,
-    WETH9WithdrawalEventArgs,
-    ZRXTokenContract,
-    DummyERC20TokenTransferEventArgs,
-    ERC20TokenEventArgs,
-    ERC20TokenEvents,
-    ERC20TokenTransferEventArgs,
-    ERC20TokenApprovalEventArgs,
-    ERC20TokenContract,
-} from './wrappers';
-export { artifacts } from './artifacts';
-export {
-    ContractArtifact,
-    ContractChains,
-    CompilerOpts,
-    StandardContractOutput,
-    CompilerSettings,
-    ContractChainData,
-    ContractAbi,
-    DevdocOutput,
-    EvmOutput,
-    CompilerSettingsMetadata,
-    OptimizerSettings,
-    OutputField,
-    ParamDescription,
-    EvmBytecodeOutput,
-    EvmBytecodeOutputLinkReferences,
-    AbiDefinition,
-    FunctionAbi,
-    EventAbi,
-    RevertErrorAbi,
-    EventParameter,
-    DataItem,
-    MethodAbi,
-    ConstructorAbi,
-    FallbackAbi,
-    ConstructorStateMutability,
-    TupleDataItem,
-    StateMutability,
-} from 'ethereum-types';

contracts/erc20/src/v06/LibERC20TokenV06.sol

@@ -21,50 +21,50 @@ pragma solidity ^0.6.5;
 
 import "@0x/contracts-utils/contracts/src/v06/errors/LibRichErrorsV06.sol";
 import "@0x/contracts-utils/contracts/src/v06/LibBytesV06.sol";
-import "./IERC20TokenV06.sol";
+import "../IERC20Token.sol";
 
 library LibERC20TokenV06 {
     bytes private constant DECIMALS_CALL_DATA = hex"313ce567";
 
-    /// @dev Calls `IERC20TokenV06(token).approve()`.
+    /// @dev Calls `IERC20Token(token).approve()`.
     ///      Reverts if the return data is invalid or the call reverts.
     /// @param token The address of the token contract.
     /// @param spender The address that receives an allowance.
     /// @param allowance The allowance to set.
-    function compatApprove(IERC20TokenV06 token, address spender, uint256 allowance) internal {
+    function compatApprove(IERC20Token token, address spender, uint256 allowance) internal {
         bytes memory callData = abi.encodeWithSelector(token.approve.selector, spender, allowance);
         _callWithOptionalBooleanResult(address(token), callData);
     }
 
-    /// @dev Calls `IERC20TokenV06(token).approve()` and sets the allowance to the
+    /// @dev Calls `IERC20Token(token).approve()` and sets the allowance to the
     ///      maximum if the current approval is not already >= an amount.
     ///      Reverts if the return data is invalid or the call reverts.
     /// @param token The address of the token contract.
     /// @param spender The address that receives an allowance.
     /// @param amount The minimum allowance needed.
-    function approveIfBelow(IERC20TokenV06 token, address spender, uint256 amount) internal {
+    function approveIfBelow(IERC20Token token, address spender, uint256 amount) internal {
         if (token.allowance(address(this), spender) < amount) {
             compatApprove(token, spender, uint256(-1));
         }
     }
 
-    /// @dev Calls `IERC20TokenV06(token).transfer()`.
+    /// @dev Calls `IERC20Token(token).transfer()`.
     ///      Reverts if the return data is invalid or the call reverts.
     /// @param token The address of the token contract.
     /// @param to The address that receives the tokens
     /// @param amount Number of tokens to transfer.
-    function compatTransfer(IERC20TokenV06 token, address to, uint256 amount) internal {
+    function compatTransfer(IERC20Token token, address to, uint256 amount) internal {
         bytes memory callData = abi.encodeWithSelector(token.transfer.selector, to, amount);
         _callWithOptionalBooleanResult(address(token), callData);
     }
 
-    /// @dev Calls `IERC20TokenV06(token).transferFrom()`.
+    /// @dev Calls `IERC20Token(token).transferFrom()`.
     ///      Reverts if the return data is invalid or the call reverts.
     /// @param token The address of the token contract.
     /// @param from The owner of the tokens.
     /// @param to The address that receives the tokens
     /// @param amount Number of tokens to transfer.
-    function compatTransferFrom(IERC20TokenV06 token, address from, address to, uint256 amount) internal {
+    function compatTransferFrom(IERC20Token token, address from, address to, uint256 amount) internal {
         bytes memory callData = abi.encodeWithSelector(token.transferFrom.selector, from, to, amount);
         _callWithOptionalBooleanResult(address(token), callData);
     }
@@ -73,7 +73,7 @@ library LibERC20TokenV06 {
     ///      Returns `18` if the call reverts.
     /// @param token The address of the token contract.
     /// @return tokenDecimals The number of decimals places for the token.
-    function compatDecimals(IERC20TokenV06 token) internal view returns (uint8 tokenDecimals) {
+    function compatDecimals(IERC20Token token) internal view returns (uint8 tokenDecimals) {
         tokenDecimals = 18;
         (bool didSucceed, bytes memory resultData) = address(token).staticcall(DECIMALS_CALL_DATA);
         if (didSucceed && resultData.length >= 32) {
@@ -88,7 +88,7 @@ library LibERC20TokenV06 {
     /// @param spender The address the spender.
     /// @return allowance_ The allowance for a token, owner, and spender.
     function compatAllowance(
-        IERC20TokenV06 token,
+        IERC20Token token,
         address owner,
         address spender
     ) internal view returns (uint256 allowance_) {
@@ -105,7 +105,7 @@ library LibERC20TokenV06 {
     /// @param token The address of the token contract.
     /// @param owner The owner of the tokens.
     /// @return balance The token balance of an owner.
-    function compatBalanceOf(IERC20TokenV06 token, address owner) internal view returns (uint256 balance) {
+    function compatBalanceOf(IERC20Token token, address owner) internal view returns (uint256 balance) {
         (bool didSucceed, bytes memory resultData) = address(token).staticcall(
             abi.encodeWithSelector(token.balanceOf.selector, owner)
         );

contracts/erc20/src/v06/WETH9V06.sol

@@ -0,0 +1,755 @@
+// Copyright (C) 2015, 2016, 2017 Dapphub
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+// solhint-disable
+pragma solidity ^0.6.0;
+
+contract WETH9V06 {
+    string public name = "Wrapped Ether";
+    string public symbol = "WETH";
+    uint8 public decimals = 18;
+
+    event Approval(address indexed _owner, address indexed _spender, uint _value);
+    event Transfer(address indexed _from, address indexed _to, uint _value);
+    event Deposit(address indexed _owner, uint _value);
+    event Withdrawal(address indexed _owner, uint _value);
+
+    mapping(address => uint) public balanceOf;
+    mapping(address => mapping(address => uint)) public allowance;
+
+    receive() external payable {
+        deposit();
+    }
+
+    function deposit() public payable {
+        balanceOf[msg.sender] += msg.value;
+        emit Deposit(msg.sender, msg.value);
+    }
+
+    function withdraw(uint wad) public {
+        require(balanceOf[msg.sender] >= wad);
+        balanceOf[msg.sender] -= wad;
+        msg.sender.transfer(wad);
+        emit Withdrawal(msg.sender, wad);
+    }
+
+    function totalSupply() public view returns (uint) {
+        return address(this).balance;
+    }
+
+    function approve(address guy, uint wad) public returns (bool) {
+        allowance[msg.sender][guy] = wad;
+        emit Approval(msg.sender, guy, wad);
+        return true;
+    }
+
+    function transfer(address dst, uint wad) public returns (bool) {
+        return transferFrom(msg.sender, dst, wad);
+    }
+
+    function transferFrom(address src, address dst, uint wad) public returns (bool) {
+        require(balanceOf[src] >= wad);
+
+        if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) {
+            require(allowance[src][msg.sender] >= wad);
+            allowance[src][msg.sender] -= wad;
+        }
+
+        balanceOf[src] -= wad;
+        balanceOf[dst] += wad;
+
+        emit Transfer(src, dst, wad);
+
+        return true;
+    }
+}
+
+/*
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
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+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
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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.
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+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
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+    it under the terms of the GNU General Public License as published by
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+    (at your option) any later version.
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+    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.
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+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
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+
+    <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/src/v08/LibERC20TokenV08.sol

@@ -21,50 +21,50 @@ pragma solidity ^0.8.0;
 
 import "@0x/contracts-utils/contracts/src/v08/errors/LibRichErrorsV08.sol";
 import "@0x/contracts-utils/contracts/src/v08/LibBytesV08.sol";
-import "./IERC20TokenV08.sol";
+import "../IERC20Token.sol";
 
 library LibERC20TokenV08 {
     bytes private constant DECIMALS_CALL_DATA = hex"313ce567";
 
-    /// @dev Calls `IERC20TokenV08(token).approve()`.
+    /// @dev Calls `IERC20Token(token).approve()`.
     ///      Reverts if the return data is invalid or the call reverts.
     /// @param token The address of the token contract.
     /// @param spender The address that receives an allowance.
     /// @param allowance The allowance to set.
-    function compatApprove(IERC20TokenV08 token, address spender, uint256 allowance) internal {
+    function compatApprove(IERC20Token token, address spender, uint256 allowance) internal {
         bytes memory callData = abi.encodeCall(token.approve, (spender, allowance));
         _callWithOptionalBooleanResult(address(token), callData);
     }
 
-    /// @dev Calls `IERC20TokenV08(token).approve()` and sets the allowance to the
+    /// @dev Calls `IERC20Token(token).approve()` and sets the allowance to the
     ///      maximum if the current approval is not already >= an amount.
     ///      Reverts if the return data is invalid or the call reverts.
     /// @param token The address of the token contract.
     /// @param spender The address that receives an allowance.
     /// @param amount The minimum allowance needed.
-    function approveIfBelow(IERC20TokenV08 token, address spender, uint256 amount) internal {
+    function approveIfBelow(IERC20Token token, address spender, uint256 amount) internal {
         if (token.allowance(address(this), spender) < amount) {
             compatApprove(token, spender, type(uint256).max);
         }
     }
 
-    /// @dev Calls `IERC20TokenV08(token).transfer()`.
+    /// @dev Calls `IERC20Token(token).transfer()`.
     ///      Reverts if the return data is invalid or the call reverts.
     /// @param token The address of the token contract.
     /// @param to The address that receives the tokens
     /// @param amount Number of tokens to transfer.
-    function compatTransfer(IERC20TokenV08 token, address to, uint256 amount) internal {
+    function compatTransfer(IERC20Token token, address to, uint256 amount) internal {
         bytes memory callData = abi.encodeCall(token.transfer, (to, amount));
         _callWithOptionalBooleanResult(address(token), callData);
     }
 
-    /// @dev Calls `IERC20TokenV08(token).transferFrom()`.
+    /// @dev Calls `IERC20Token(token).transferFrom()`.
     ///      Reverts if the return data is invalid or the call reverts.
     /// @param token The address of the token contract.
     /// @param from The owner of the tokens.
     /// @param to The address that receives the tokens
     /// @param amount Number of tokens to transfer.
-    function compatTransferFrom(IERC20TokenV08 token, address from, address to, uint256 amount) internal {
+    function compatTransferFrom(IERC20Token token, address from, address to, uint256 amount) internal {
         bytes memory callData = abi.encodeCall(token.transferFrom, (from, to, amount));
         _callWithOptionalBooleanResult(address(token), callData);
     }
@@ -73,7 +73,7 @@ library LibERC20TokenV08 {
     ///      Returns `18` if the call reverts.
     /// @param token The address of the token contract.
     /// @return tokenDecimals The number of decimals places for the token.
-    function compatDecimals(IERC20TokenV08 token) internal view returns (uint8 tokenDecimals) {
+    function compatDecimals(IERC20Token token) internal view returns (uint8 tokenDecimals) {
         tokenDecimals = 18;
         (bool didSucceed, bytes memory resultData) = address(token).staticcall(DECIMALS_CALL_DATA);
         if (didSucceed && resultData.length >= 32) {
@@ -88,7 +88,7 @@ library LibERC20TokenV08 {
     /// @param spender The address the spender.
     /// @return allowance_ The allowance for a token, owner, and spender.
     function compatAllowance(
-        IERC20TokenV08 token,
+        IERC20Token token,
         address owner,
         address spender
     ) internal view returns (uint256 allowance_) {
@@ -105,7 +105,7 @@ library LibERC20TokenV08 {
     /// @param token The address of the token contract.
     /// @param owner The owner of the tokens.
     /// @return balance The token balance of an owner.
-    function compatBalanceOf(IERC20TokenV08 token, address owner) internal view returns (uint256 balance) {
+    function compatBalanceOf(IERC20Token token, address owner) internal view returns (uint256 balance) {
         (bool didSucceed, bytes memory resultData) = address(token).staticcall(
             abi.encodeCall(token.balanceOf, (owner))
         );

contracts/erc20/src/wrappers.ts

@@ -1,11 +0,0 @@
-/*
- * -----------------------------------------------------------------------------
- * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
- * -----------------------------------------------------------------------------
- */
-export * from '../generated-wrappers/dummy_erc20_token';
-export * from '../generated-wrappers/dummy_multiple_return_erc20_token';
-export * from '../generated-wrappers/dummy_no_return_erc20_token';
-export * from '../generated-wrappers/erc20_token';
-export * from '../generated-wrappers/weth9';
-export * from '../generated-wrappers/zrx_token';

contracts/erc20/test/WETH9V06Test.t.sol

@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+  Copyright 2023 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 "forge-std/Test.sol";
+import "../src/v06/WETH9V06.sol";
+
+contract WETH9V06Test is Test {
+    address payable internal owner = payable(vm.addr(1));
+    address payable internal user = payable(vm.addr(2));
+    WETH9V06 internal etherToken;
+
+    function setUp() public {
+        vm.deal(owner, 1e20);
+        vm.deal(user, 1e20);
+
+        etherToken = new WETH9V06();
+    }
+
+    function testShouldRevertIfCallerAttemptsToDepositMoreThanTheirBalance() public {
+        vm.prank(user);
+        vm.expectRevert();
+        etherToken.deposit{value: 1e20 + 1}();
+    }
+
+    function testShouldConvertDepositedETHToWrappedETH() public {
+        vm.prank(user);
+        etherToken.deposit{value: 1e20}();
+        vm.stopPrank();
+
+        assertEq(etherToken.balanceOf(user), 1e20);
+        assertEq(address(etherToken).balance, 1e20);
+    }
+
+    function testShouldRevertIfCallerAttemptsToWithdrawMoreThanTheirBalance() public {
+        vm.prank(user);
+        etherToken.deposit{value: 1e20}();
+
+        vm.expectRevert();
+        etherToken.withdraw(1e20 + 1);
+    }
+
+    function testShouldConvertWithdrawWrappedETHToETH() public {
+        vm.prank(user);
+        etherToken.deposit{value: 1e20}();
+        vm.prank(user);
+        etherToken.withdraw(100);
+        vm.stopPrank();
+
+        assertEq(etherToken.balanceOf(user), 1e20 - 100);
+        assertEq(address(etherToken).balance, 1e20 - 100);
+        assertEq(user.balance, 100);
+    }
+
+    function testShouldConvertSentETHToWrappedETH() public {
+        vm.prank(user);
+        address(etherToken).call{value: 1e20}(new bytes(0));
+        vm.stopPrank();
+
+        assertEq(etherToken.balanceOf(user), 1e20);
+        assertEq(address(etherToken).balance, 1e20);
+    }
+}

contracts/erc20/test/ZRXTokenTest.t.sol

@@ -0,0 +1,117 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+  Copyright 2023 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 ^0.8.17;
+
+import "forge-std/Test.sol";
+import "../src/IERC20Token.sol";
+
+contract ZRXTokenTest is Test {
+    address payable internal owner = payable(vm.addr(1));
+    address payable internal user = payable(vm.addr(2));
+    address payable internal anotherUser = payable(vm.addr(3));
+    uint256 internal totalSupply = 1_000_000_000 * 1e18;
+    IERC20Token zrxToken;
+
+    function setUp() public {
+        vm.deal(owner, 1e20);
+        vm.deal(user, 1e20);
+
+        vm.prank(owner);
+        bytes memory _bytecode = vm.getCode("./out/ZRXToken.sol/ZRXToken.json");
+        address _address;
+        assembly {
+            _address := create(0, add(_bytecode, 0x20), mload(_bytecode))
+        }
+        vm.stopPrank();
+        zrxToken = IERC20Token(address(_address));
+    }
+
+    function testShouldHave18Decimals() public {
+        assertEq(zrxToken.decimals(), 18);
+    }
+
+    function testShouldHaveTotalSupplyOf1Billion() public {
+        assertEq(zrxToken.totalSupply(), totalSupply);
+    }
+
+    function testShouldInitializeOwnerBalanceToTotalSupply() public {
+        assertEq(zrxToken.balanceOf(owner), totalSupply);
+    }
+
+    function testShouldTransferBalanceCorrectly() public {
+        vm.prank(owner);
+        zrxToken.transfer(user, 100);
+
+        assertEq(zrxToken.balanceOf(user), 100);
+        assertEq(zrxToken.balanceOf(owner), totalSupply - 100);
+    }
+
+    function testShouldReturnTrueOnAZeroValueTransfer() public {
+        vm.prank(owner);
+        bool success = zrxToken.transfer(user, 0);
+        assertTrue(success);
+    }
+
+    function testShouldReturnTrueOnAZeroValueTransferByUserWithZeroBalance() public {
+        vm.prank(anotherUser);
+        bool success = zrxToken.transfer(user, 0);
+        assertTrue(success);
+    }
+
+    function testShouldReturnFalseIfSenderHasInsufficientBalance() public {
+        vm.prank(owner);
+        zrxToken.approve(user, totalSupply + 1);
+        vm.stopPrank();
+
+        bool success = zrxToken.transferFrom(owner, user, totalSupply + 1);
+        assertEq(success, false);
+    }
+
+    function testShouldReturnFalseIfRecipientHasInsufficientAllowance() public {
+        vm.prank(owner);
+        zrxToken.approve(user, totalSupply - 1);
+        vm.stopPrank();
+
+        bool success = zrxToken.transferFrom(owner, user, totalSupply);
+        assertEq(success, false);
+    }
+
+    function testShouldReturnTrueOnAZeroValueApprovedTransfer() public {
+        vm.prank(user);
+        bool success = zrxToken.transferFrom(owner, user, 0);
+        assertEq(success, true);
+    }
+
+    function testShouldNotModifySenderAllowanceIfSetToUINT256Max() public {
+        vm.prank(owner);
+        zrxToken.approve(user, type(uint256).max);
+        vm.stopPrank();
+
+        zrxToken.transferFrom(owner, user, 100);
+        assertEq(zrxToken.allowance(owner, user), type(uint256).max);
+    }
+
+    function testShouldTransferCorrectlyWhenSufficientAllowance() public {
+        vm.prank(owner);
+        zrxToken.approve(user, 1000 * 1e18);
+        vm.stopPrank();
+
+        vm.prank(user);
+        zrxToken.transferFrom(owner, user, 100 * 1e18);
+        assertEq(zrxToken.allowance(owner, user), 900 * 1e18);
+        assertEq(zrxToken.balanceOf(user), 100 * 1e18);
+        assertEq(zrxToken.balanceOf(owner), totalSupply - 100 * 1e18);
+    }
+}

contracts/erc20/test/artifacts.ts

@@ -1,49 +0,0 @@
-/*
- * -----------------------------------------------------------------------------
- * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
- * -----------------------------------------------------------------------------
- */
-import { ContractArtifact } from 'ethereum-types';
-
-import * as DummyERC20Token from '../test/generated-artifacts/DummyERC20Token.json';
-import * as DummyMultipleReturnERC20Token from '../test/generated-artifacts/DummyMultipleReturnERC20Token.json';
-import * as DummyNoReturnERC20Token from '../test/generated-artifacts/DummyNoReturnERC20Token.json';
-import * as ERC20Token from '../test/generated-artifacts/ERC20Token.json';
-import * as IERC20Token from '../test/generated-artifacts/IERC20Token.json';
-import * as IERC20TokenV06 from '../test/generated-artifacts/IERC20TokenV06.json';
-import * as IERC20TokenV08 from '../test/generated-artifacts/IERC20TokenV08.json';
-import * as IEtherToken from '../test/generated-artifacts/IEtherToken.json';
-import * as IEtherTokenV06 from '../test/generated-artifacts/IEtherTokenV06.json';
-import * as IEtherTokenV08 from '../test/generated-artifacts/IEtherTokenV08.json';
-import * as LibERC20Token from '../test/generated-artifacts/LibERC20Token.json';
-import * as LibERC20TokenV06 from '../test/generated-artifacts/LibERC20TokenV06.json';
-import * as LibERC20TokenV08 from '../test/generated-artifacts/LibERC20TokenV08.json';
-import * as MintableERC20Token from '../test/generated-artifacts/MintableERC20Token.json';
-import * as TestLibERC20Token from '../test/generated-artifacts/TestLibERC20Token.json';
-import * as TestLibERC20TokenTarget from '../test/generated-artifacts/TestLibERC20TokenTarget.json';
-import * as UnlimitedAllowanceERC20Token from '../test/generated-artifacts/UnlimitedAllowanceERC20Token.json';
-import * as UntransferrableDummyERC20Token from '../test/generated-artifacts/UntransferrableDummyERC20Token.json';
-import * as WETH9 from '../test/generated-artifacts/WETH9.json';
-import * as ZRXToken from '../test/generated-artifacts/ZRXToken.json';
-export const artifacts = {
-    ERC20Token: ERC20Token as ContractArtifact,
-    LibERC20Token: LibERC20Token as ContractArtifact,
-    MintableERC20Token: MintableERC20Token as ContractArtifact,
-    UnlimitedAllowanceERC20Token: UnlimitedAllowanceERC20Token as ContractArtifact,
-    WETH9: WETH9 as ContractArtifact,
-    ZRXToken: ZRXToken as any as ContractArtifact,
-    IERC20Token: IERC20Token as ContractArtifact,
-    IEtherToken: IEtherToken as ContractArtifact,
-    IERC20TokenV06: IERC20TokenV06 as ContractArtifact,
-    IEtherTokenV06: IEtherTokenV06 as ContractArtifact,
-    LibERC20TokenV06: LibERC20TokenV06 as ContractArtifact,
-    IERC20TokenV08: IERC20TokenV08 as ContractArtifact,
-    IEtherTokenV08: IEtherTokenV08 as ContractArtifact,
-    LibERC20TokenV08: LibERC20TokenV08 as ContractArtifact,
-    DummyERC20Token: DummyERC20Token as ContractArtifact,
-    DummyMultipleReturnERC20Token: DummyMultipleReturnERC20Token as ContractArtifact,
-    DummyNoReturnERC20Token: DummyNoReturnERC20Token as ContractArtifact,
-    TestLibERC20Token: TestLibERC20Token as ContractArtifact,
-    TestLibERC20TokenTarget: TestLibERC20TokenTarget as ContractArtifact,
-    UntransferrableDummyERC20Token: UntransferrableDummyERC20Token as ContractArtifact,
-};

contracts/erc20/test/lib_erc20_token.ts

@@ -1,335 +0,0 @@
-import {
-    blockchainTests,
-    constants,
-    expect,
-    getRandomInteger,
-    randomAddress,
-    verifyEventsFromLogs,
-} from '@0x/contracts-test-utils';
-import { hexUtils, RawRevertError, StringRevertError } from '@0x/utils';
-
-import { TestLibERC20TokenContract, TestLibERC20TokenTargetEvents } from './wrappers';
-
-import { artifacts } from './artifacts';
-
-blockchainTests('LibERC20Token', env => {
-    let testContract: TestLibERC20TokenContract;
-    const REVERT_STRING = 'WHOOPSIE';
-    const ENCODED_REVERT = new StringRevertError(REVERT_STRING).encode();
-    const ENCODED_TRUE = hexUtils.leftPad(1);
-    const ENCODED_FALSE = hexUtils.leftPad(0);
-    const ENCODED_TWO = hexUtils.leftPad(2);
-    const ENCODED_SHORT_TRUE = hexUtils.leftPad(2, 31);
-    const ENCODED_LONG_TRUE = hexUtils.leftPad(2, 33);
-
-    before(async () => {
-        testContract = await TestLibERC20TokenContract.deployFrom0xArtifactAsync(
-            artifacts.TestLibERC20Token,
-            env.provider,
-            env.txDefaults,
-            artifacts,
-        );
-    });
-
-    describe('approve()', () => {
-        it('calls the target with the correct arguments', async () => {
-            const spender = randomAddress();
-            const allowance = getRandomInteger(0, 100e18);
-            const { logs } = await testContract
-                .testApprove(false, ENCODED_REVERT, ENCODED_TRUE, spender, allowance)
-                .awaitTransactionSuccessAsync();
-            expect(logs).to.be.length(1);
-            verifyEventsFromLogs(logs, [{ spender, allowance }], TestLibERC20TokenTargetEvents.ApproveCalled);
-        });
-
-        it('succeeds if the target returns true', async () => {
-            const spender = randomAddress();
-            const allowance = getRandomInteger(0, 100e18);
-            await testContract
-                .testApprove(false, ENCODED_REVERT, ENCODED_TRUE, spender, allowance)
-                .awaitTransactionSuccessAsync();
-        });
-
-        it('succeeds if the target returns nothing', async () => {
-            const spender = randomAddress();
-            const allowance = getRandomInteger(0, 100e18);
-            await testContract
-                .testApprove(false, ENCODED_REVERT, constants.NULL_BYTES, spender, allowance)
-                .awaitTransactionSuccessAsync();
-        });
-
-        it('fails if the target returns false', async () => {
-            const spender = randomAddress();
-            const allowance = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testApprove(false, ENCODED_REVERT, ENCODED_FALSE, spender, allowance)
-                .awaitTransactionSuccessAsync();
-            const expectedError = new RawRevertError(ENCODED_FALSE);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('fails if the target returns nonzero and not true', async () => {
-            const spender = randomAddress();
-            const allowance = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testApprove(false, ENCODED_REVERT, ENCODED_TWO, spender, allowance)
-                .awaitTransactionSuccessAsync();
-            const expectedError = new RawRevertError(ENCODED_TWO);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('fails if the target returns less than 32 bytes', async () => {
-            const spender = randomAddress();
-            const allowance = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testApprove(false, ENCODED_REVERT, ENCODED_SHORT_TRUE, spender, allowance)
-                .awaitTransactionSuccessAsync();
-            const expectedError = new RawRevertError(ENCODED_SHORT_TRUE);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('fails if the target returns greater than 32 bytes', async () => {
-            const spender = randomAddress();
-            const allowance = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testApprove(false, ENCODED_REVERT, ENCODED_LONG_TRUE, spender, allowance)
-                .awaitTransactionSuccessAsync();
-            const expectedError = new RawRevertError(ENCODED_LONG_TRUE);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('fails if the target reverts', async () => {
-            const spender = randomAddress();
-            const allowance = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testApprove(true, ENCODED_REVERT, ENCODED_TRUE, spender, allowance)
-                .awaitTransactionSuccessAsync();
-            return expect(tx).to.revertWith(REVERT_STRING);
-        });
-
-        it('fails if the target reverts with no data', async () => {
-            const spender = randomAddress();
-            const allowance = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testApprove(true, constants.NULL_BYTES, ENCODED_TRUE, spender, allowance)
-                .awaitTransactionSuccessAsync();
-            return expect(tx).to.be.rejectedWith('revert');
-        });
-    });
-
-    describe('transfer()', () => {
-        it('calls the target with the correct arguments', async () => {
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const { logs } = await testContract
-                .testTransfer(false, ENCODED_REVERT, ENCODED_TRUE, to, amount)
-                .awaitTransactionSuccessAsync();
-            expect(logs).to.be.length(1);
-            verifyEventsFromLogs(logs, [{ to, amount }], TestLibERC20TokenTargetEvents.TransferCalled);
-        });
-
-        it('succeeds if the target returns true', async () => {
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            await testContract
-                .testTransfer(false, ENCODED_REVERT, ENCODED_TRUE, to, amount)
-                .awaitTransactionSuccessAsync();
-        });
-
-        it('succeeds if the target returns nothing', async () => {
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            await testContract
-                .testTransfer(false, ENCODED_REVERT, constants.NULL_BYTES, to, amount)
-                .awaitTransactionSuccessAsync();
-        });
-
-        it('fails if the target returns false', async () => {
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testTransfer(false, ENCODED_REVERT, ENCODED_FALSE, to, amount)
-                .awaitTransactionSuccessAsync();
-            const expectedError = new RawRevertError(ENCODED_FALSE);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('fails if the target returns nonzero and not true', async () => {
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testTransfer(false, ENCODED_REVERT, ENCODED_TWO, to, amount)
-                .awaitTransactionSuccessAsync();
-            const expectedError = new RawRevertError(ENCODED_TWO);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('fails if the target returns less than 32 bytes', async () => {
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testTransfer(false, ENCODED_REVERT, ENCODED_SHORT_TRUE, to, amount)
-                .awaitTransactionSuccessAsync();
-            const expectedError = new RawRevertError(ENCODED_SHORT_TRUE);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('fails if the target returns greater than 32 bytes', async () => {
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testTransfer(false, ENCODED_REVERT, ENCODED_LONG_TRUE, to, amount)
-                .awaitTransactionSuccessAsync();
-            const expectedError = new RawRevertError(ENCODED_LONG_TRUE);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('fails if the target reverts', async () => {
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testTransfer(true, ENCODED_REVERT, ENCODED_TRUE, to, amount)
-                .awaitTransactionSuccessAsync();
-            return expect(tx).to.revertWith(REVERT_STRING);
-        });
-
-        it('fails if the target reverts with no data', async () => {
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testTransfer(true, constants.NULL_BYTES, ENCODED_TRUE, to, amount)
-                .awaitTransactionSuccessAsync();
-            return expect(tx).to.be.rejectedWith('revert');
-        });
-    });
-
-    describe('transferFrom()', () => {
-        it('calls the target with the correct arguments', async () => {
-            const owner = randomAddress();
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const { logs } = await testContract
-                .testTransferFrom(false, ENCODED_REVERT, ENCODED_TRUE, owner, to, amount)
-                .awaitTransactionSuccessAsync();
-            expect(logs).to.be.length(1);
-            verifyEventsFromLogs(logs, [{ from: owner, to, amount }], TestLibERC20TokenTargetEvents.TransferFromCalled);
-        });
-
-        it('succeeds if the target returns true', async () => {
-            const owner = randomAddress();
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            await testContract
-                .testTransferFrom(false, ENCODED_REVERT, ENCODED_TRUE, owner, to, amount)
-                .awaitTransactionSuccessAsync();
-        });
-
-        it('succeeds if the target returns nothing', async () => {
-            const owner = randomAddress();
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            await testContract
-                .testTransferFrom(false, ENCODED_REVERT, constants.NULL_BYTES, owner, to, amount)
-                .awaitTransactionSuccessAsync();
-        });
-
-        it('fails if the target returns false', async () => {
-            const owner = randomAddress();
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testTransferFrom(false, ENCODED_REVERT, ENCODED_FALSE, owner, to, amount)
-                .awaitTransactionSuccessAsync();
-            const expectedError = new RawRevertError(ENCODED_FALSE);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('fails if the target returns nonzero and not true', async () => {
-            const owner = randomAddress();
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testTransferFrom(false, ENCODED_REVERT, ENCODED_TWO, owner, to, amount)
-                .awaitTransactionSuccessAsync();
-            const expectedError = new RawRevertError(ENCODED_TWO);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('fails if the target returns less than 32 bytes', async () => {
-            const owner = randomAddress();
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testTransferFrom(false, ENCODED_REVERT, ENCODED_SHORT_TRUE, owner, to, amount)
-                .awaitTransactionSuccessAsync();
-            const expectedError = new RawRevertError(ENCODED_SHORT_TRUE);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('fails if the target returns greater than 32 bytes', async () => {
-            const owner = randomAddress();
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testTransferFrom(false, ENCODED_REVERT, ENCODED_LONG_TRUE, owner, to, amount)
-                .awaitTransactionSuccessAsync();
-            const expectedError = new RawRevertError(ENCODED_LONG_TRUE);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('fails if the target reverts', async () => {
-            const owner = randomAddress();
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testTransferFrom(true, ENCODED_REVERT, ENCODED_TRUE, owner, to, amount)
-                .awaitTransactionSuccessAsync();
-            return expect(tx).to.revertWith(REVERT_STRING);
-        });
-
-        it('fails if the target reverts with no data', async () => {
-            const owner = randomAddress();
-            const to = randomAddress();
-            const amount = getRandomInteger(0, 100e18);
-            const tx = testContract
-                .testTransferFrom(true, constants.NULL_BYTES, ENCODED_TRUE, owner, to, amount)
-                .awaitTransactionSuccessAsync();
-            return expect(tx).to.be.rejectedWith('revert');
-        });
-    });
-
-    describe('decimals()', () => {
-        const DEFAULT_DECIMALS = 18;
-        const ENCODED_ZERO = hexUtils.leftPad(0);
-        const ENCODED_SHORT_ZERO = hexUtils.leftPad(0, 31);
-        const ENCODED_LONG_ZERO = hexUtils.leftPad(0, 33);
-        const randomDecimals = () => Math.floor(Math.random() * 256) + 1;
-
-        it('returns the number of decimals defined by the token', async () => {
-            const decimals = randomDecimals();
-            const encodedDecimals = hexUtils.leftPad(decimals);
-            const result = await testContract.testDecimals(false, ENCODED_REVERT, encodedDecimals).callAsync();
-            return expect(result).to.bignumber.eq(decimals);
-        });
-
-        it('returns 0 if the token returns 0', async () => {
-            const result = await testContract.testDecimals(false, ENCODED_REVERT, ENCODED_ZERO).callAsync();
-            return expect(result).to.bignumber.eq(0);
-        });
-
-        it('returns 18 if the token returns less than 32 bytes', async () => {
-            const result = await testContract.testDecimals(false, ENCODED_REVERT, ENCODED_SHORT_ZERO).callAsync();
-            return expect(result).to.bignumber.eq(DEFAULT_DECIMALS);
-        });
-
-        it('returns 18 if the token returns greater than 32 bytes', async () => {
-            const result = await testContract.testDecimals(false, ENCODED_REVERT, ENCODED_LONG_ZERO).callAsync();
-            return expect(result).to.bignumber.eq(DEFAULT_DECIMALS);
-        });
-
-        it('returns 18 if the token reverts', async () => {
-            const result = await testContract.testDecimals(true, ENCODED_REVERT, ENCODED_ZERO).callAsync();
-            return expect(result).to.bignumber.eq(DEFAULT_DECIMALS);
-        });
-    });
-});

contracts/erc20/test/unlimited_allowance_token.ts

@@ -1,187 +0,0 @@
-import { chaiSetup, constants, provider, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import { RevertReason } from '@0x/types';
-import { BigNumber } from '@0x/utils';
-import * as chai from 'chai';
-
-import { DummyERC20TokenContract } from './wrappers';
-
-import { artifacts } from './artifacts';
-
-chaiSetup.configure();
-const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('UnlimitedAllowanceToken', () => {
-    let owner: string;
-    let spender: string;
-    const MAX_MINT_VALUE = new BigNumber(10000000000000000000000);
-    let token: DummyERC20TokenContract;
-
-    before(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    after(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-    before(async () => {
-        const accounts = await web3Wrapper.getAvailableAddressesAsync();
-        owner = accounts[0];
-        spender = accounts[1];
-        token = await DummyERC20TokenContract.deployFrom0xArtifactAsync(
-            artifacts.DummyERC20Token,
-            provider,
-            txDefaults,
-            artifacts,
-            constants.DUMMY_TOKEN_NAME,
-            constants.DUMMY_TOKEN_SYMBOL,
-            constants.DUMMY_TOKEN_DECIMALS,
-            constants.DUMMY_TOKEN_TOTAL_SUPPLY,
-        );
-        await web3Wrapper.awaitTransactionSuccessAsync(
-            await token.mint(MAX_MINT_VALUE).sendTransactionAsync({ from: owner }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-    });
-    beforeEach(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    afterEach(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-    describe('transfer', () => {
-        it('should revert if owner has insufficient balance', async () => {
-            const ownerBalance = await token.balanceOf(owner).callAsync();
-            const amountToTransfer = ownerBalance.plus(1);
-            return expect(token.transfer(spender, amountToTransfer).callAsync({ from: owner })).to.revertWith(
-                RevertReason.Erc20InsufficientBalance,
-            );
-        });
-
-        it('should transfer balance from sender to receiver', async () => {
-            const receiver = spender;
-            const initOwnerBalance = await token.balanceOf(owner).callAsync();
-            const amountToTransfer = new BigNumber(1);
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await token.transfer(receiver, amountToTransfer).sendTransactionAsync({ from: owner }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-            const finalOwnerBalance = await token.balanceOf(owner).callAsync();
-            const finalReceiverBalance = await token.balanceOf(receiver).callAsync();
-
-            const expectedFinalOwnerBalance = initOwnerBalance.minus(amountToTransfer);
-            const expectedFinalReceiverBalance = amountToTransfer;
-            expect(finalOwnerBalance).to.be.bignumber.equal(expectedFinalOwnerBalance);
-            expect(finalReceiverBalance).to.be.bignumber.equal(expectedFinalReceiverBalance);
-        });
-
-        it('should return true on a 0 value transfer', async () => {
-            const didReturnTrue = await token.transfer(spender, new BigNumber(0)).callAsync({
-                from: owner,
-            });
-            expect(didReturnTrue).to.be.true();
-        });
-    });
-
-    describe('transferFrom', () => {
-        it('should revert if owner has insufficient balance', async () => {
-            const ownerBalance = await token.balanceOf(owner).callAsync();
-            const amountToTransfer = ownerBalance.plus(1);
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await token.approve(spender, amountToTransfer).sendTransactionAsync({ from: owner }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-            return expect(
-                token.transferFrom(owner, spender, amountToTransfer).callAsync({
-                    from: spender,
-                }),
-            ).to.revertWith(RevertReason.Erc20InsufficientBalance);
-        });
-
-        it('should revert if spender has insufficient allowance', async () => {
-            const ownerBalance = await token.balanceOf(owner).callAsync();
-            const amountToTransfer = ownerBalance;
-
-            const spenderAllowance = await token.allowance(owner, spender).callAsync();
-            const isSpenderAllowanceInsufficient = spenderAllowance.comparedTo(amountToTransfer) < 0;
-            expect(isSpenderAllowanceInsufficient).to.be.true();
-
-            return expect(
-                token.transferFrom(owner, spender, amountToTransfer).callAsync({
-                    from: spender,
-                }),
-            ).to.revertWith(RevertReason.Erc20InsufficientAllowance);
-        });
-
-        it('should return true on a 0 value transfer', async () => {
-            const amountToTransfer = new BigNumber(0);
-            const didReturnTrue = await token.transferFrom(owner, spender, amountToTransfer).callAsync({
-                from: spender,
-            });
-            expect(didReturnTrue).to.be.true();
-        });
-
-        it('should not modify spender allowance if spender allowance is 2^256 - 1', async () => {
-            const initOwnerBalance = await token.balanceOf(owner).callAsync();
-            const amountToTransfer = initOwnerBalance;
-            const initSpenderAllowance = constants.UNLIMITED_ALLOWANCE_IN_BASE_UNITS;
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await token.approve(spender, initSpenderAllowance).sendTransactionAsync({ from: owner }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await token.transferFrom(owner, spender, amountToTransfer).sendTransactionAsync({
-                    from: spender,
-                    gas: constants.MAX_TOKEN_TRANSFERFROM_GAS,
-                }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-
-            const newSpenderAllowance = await token.allowance(owner, spender).callAsync();
-            expect(initSpenderAllowance).to.be.bignumber.equal(newSpenderAllowance);
-        });
-
-        it('should transfer the correct balances if spender has sufficient allowance', async () => {
-            const initOwnerBalance = await token.balanceOf(owner).callAsync();
-            const amountToTransfer = initOwnerBalance;
-            const initSpenderAllowance = initOwnerBalance;
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await token.approve(spender, initSpenderAllowance).sendTransactionAsync({ from: owner }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await token.transferFrom(owner, spender, amountToTransfer).sendTransactionAsync({
-                    from: spender,
-                    gas: constants.MAX_TOKEN_TRANSFERFROM_GAS,
-                }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-
-            const newOwnerBalance = await token.balanceOf(owner).callAsync();
-            const newSpenderBalance = await token.balanceOf(spender).callAsync();
-
-            expect(newOwnerBalance).to.be.bignumber.equal(0);
-            expect(newSpenderBalance).to.be.bignumber.equal(initOwnerBalance);
-        });
-
-        it('should modify allowance if spender has sufficient allowance less than 2^256 - 1', async () => {
-            const initOwnerBalance = await token.balanceOf(owner).callAsync();
-            const amountToTransfer = initOwnerBalance;
-            const initSpenderAllowance = initOwnerBalance;
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await token.approve(spender, initSpenderAllowance).sendTransactionAsync({ from: owner }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await token.transferFrom(owner, spender, amountToTransfer).sendTransactionAsync({
-                    from: spender,
-                    gas: constants.MAX_TOKEN_TRANSFERFROM_GAS,
-                }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-
-            const newSpenderAllowance = await token.allowance(owner, spender).callAsync();
-            expect(newSpenderAllowance).to.be.bignumber.equal(0);
-        });
-    });
-});

contracts/erc20/test/weth9.ts

@@ -1,149 +0,0 @@
-import {
-    chaiSetup,
-    constants,
-    expectInsufficientFundsAsync,
-    expectTransactionFailedWithoutReasonAsync,
-    provider,
-    txDefaults,
-    web3Wrapper,
-} from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import { BigNumber } from '@0x/utils';
-import { Web3Wrapper } from '@0x/web3-wrapper';
-import * as chai from 'chai';
-
-import { WETH9Contract } from './wrappers';
-
-import { artifacts } from './artifacts';
-
-chaiSetup.configure();
-const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('EtherToken', () => {
-    let account: string;
-    const gasPrice = new BigNumber(constants.DEFAULT_GAS_PRICE);
-    let etherToken: WETH9Contract;
-
-    before(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    after(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-    before(async () => {
-        const accounts = await web3Wrapper.getAvailableAddressesAsync();
-        account = accounts[0];
-
-        etherToken = await WETH9Contract.deployFrom0xArtifactAsync(
-            artifacts.WETH9,
-            provider,
-            {
-                ...txDefaults,
-                gasPrice,
-            },
-            artifacts,
-        );
-    });
-    beforeEach(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    afterEach(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-    describe('deposit', () => {
-        it('should revert if caller attempts to deposit more Ether than caller balance', async () => {
-            const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
-            const ethToDeposit = initEthBalance.plus(1);
-
-            return expectInsufficientFundsAsync(etherToken.deposit().sendTransactionAsync({ value: ethToDeposit }));
-        });
-
-        it('should convert deposited Ether to wrapped Ether tokens', async () => {
-            const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
-            const initEthTokenBalance = await etherToken.balanceOf(account).callAsync();
-
-            const ethToDeposit = new BigNumber(Web3Wrapper.toWei(new BigNumber(1)));
-
-            const txHash = await etherToken.deposit().sendTransactionAsync({ value: ethToDeposit });
-            const receipt = await web3Wrapper.awaitTransactionSuccessAsync(
-                txHash,
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-
-            const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
-            const finalEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
-            const finalEthTokenBalance = await etherToken.balanceOf(account).callAsync();
-
-            expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
-            expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.plus(ethToDeposit));
-        });
-    });
-
-    describe('withdraw', () => {
-        it('should revert if caller attempts to withdraw greater than caller balance', async () => {
-            const initEthTokenBalance = await etherToken.balanceOf(account).callAsync();
-            const ethTokensToWithdraw = initEthTokenBalance.plus(1);
-
-            return expectTransactionFailedWithoutReasonAsync(
-                etherToken.withdraw(ethTokensToWithdraw).sendTransactionAsync(),
-            );
-        });
-
-        it('should convert ether tokens to ether with sufficient balance', async () => {
-            const ethToDeposit = new BigNumber(Web3Wrapper.toWei(new BigNumber(1)));
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await etherToken.deposit().sendTransactionAsync({ value: ethToDeposit }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-            const initEthTokenBalance = await etherToken.balanceOf(account).callAsync();
-            const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
-            const ethTokensToWithdraw = initEthTokenBalance;
-            expect(ethTokensToWithdraw).to.not.be.bignumber.equal(0);
-            const txHash = await etherToken.withdraw(ethTokensToWithdraw).sendTransactionAsync({
-                gas: constants.MAX_ETHERTOKEN_WITHDRAW_GAS,
-            });
-            const receipt = await web3Wrapper.awaitTransactionSuccessAsync(
-                txHash,
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-
-            const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
-            const finalEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
-            const finalEthTokenBalance = await etherToken.balanceOf(account).callAsync();
-
-            expect(finalEthBalance).to.be.bignumber.equal(
-                initEthBalance.plus(ethTokensToWithdraw.minus(ethSpentOnGas)),
-            );
-            expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.minus(ethTokensToWithdraw));
-        });
-    });
-
-    describe('fallback', () => {
-        it('should convert sent ether to ether tokens', async () => {
-            const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
-            const initEthTokenBalance = await etherToken.balanceOf(account).callAsync();
-
-            const ethToDeposit = Web3Wrapper.toBaseUnitAmount(new BigNumber(1), 18);
-
-            const txHash = await web3Wrapper.sendTransactionAsync({
-                from: account,
-                to: etherToken.address,
-                value: ethToDeposit,
-                gasPrice,
-            });
-
-            const receipt = await web3Wrapper.awaitTransactionSuccessAsync(
-                txHash,
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-
-            const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
-            const finalEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
-            const finalEthTokenBalance = await etherToken.balanceOf(account).callAsync();
-
-            expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
-            expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.plus(ethToDeposit));
-        });
-    });
-});

contracts/erc20/test/wrappers.ts

@@ -1,25 +0,0 @@
-/*
- * -----------------------------------------------------------------------------
- * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
- * -----------------------------------------------------------------------------
- */
-export * from '../test/generated-wrappers/dummy_erc20_token';
-export * from '../test/generated-wrappers/dummy_multiple_return_erc20_token';
-export * from '../test/generated-wrappers/dummy_no_return_erc20_token';
-export * from '../test/generated-wrappers/erc20_token';
-export * from '../test/generated-wrappers/i_erc20_token';
-export * from '../test/generated-wrappers/i_erc20_token_v06';
-export * from '../test/generated-wrappers/i_erc20_token_v08';
-export * from '../test/generated-wrappers/i_ether_token';
-export * from '../test/generated-wrappers/i_ether_token_v06';
-export * from '../test/generated-wrappers/i_ether_token_v08';
-export * from '../test/generated-wrappers/lib_erc20_token';
-export * from '../test/generated-wrappers/lib_erc20_token_v06';
-export * from '../test/generated-wrappers/lib_erc20_token_v08';
-export * from '../test/generated-wrappers/mintable_erc20_token';
-export * from '../test/generated-wrappers/test_lib_erc20_token';
-export * from '../test/generated-wrappers/test_lib_erc20_token_target';
-export * from '../test/generated-wrappers/unlimited_allowance_erc20_token';
-export * from '../test/generated-wrappers/untransferrable_dummy_erc20_token';
-export * from '../test/generated-wrappers/weth9';
-export * from '../test/generated-wrappers/zrx_token';

contracts/erc20/test/zrx_token.ts

@@ -1,210 +0,0 @@
-import { chaiSetup, constants, provider, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import { BigNumber } from '@0x/utils';
-import { Web3Wrapper } from '@0x/web3-wrapper';
-import * as chai from 'chai';
-
-import { ZRXTokenContract } from './wrappers';
-
-import { artifacts } from './artifacts';
-
-chaiSetup.configure();
-const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('ZRXToken', () => {
-    let owner: string;
-    let spender: string;
-    let MAX_UINT: BigNumber;
-    let zrxToken: ZRXTokenContract;
-
-    before(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    after(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-    before(async () => {
-        const accounts = await web3Wrapper.getAvailableAddressesAsync();
-        owner = accounts[0];
-        spender = accounts[1];
-        zrxToken = await ZRXTokenContract.deployFrom0xArtifactAsync(
-            artifacts.ZRXToken,
-            provider,
-            txDefaults,
-            artifacts,
-        );
-        MAX_UINT = constants.UNLIMITED_ALLOWANCE_IN_BASE_UNITS;
-    });
-    beforeEach(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    afterEach(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-    describe('constants', () => {
-        it('should have 18 decimals', async () => {
-            const decimals = new BigNumber(await zrxToken.decimals().callAsync());
-            const expectedDecimals = 18;
-            expect(decimals).to.be.bignumber.equal(expectedDecimals);
-        });
-
-        it('should have a total supply of 1 billion tokens', async () => {
-            const totalSupply = new BigNumber(await zrxToken.totalSupply().callAsync());
-            const expectedTotalSupply = 1000000000;
-            expect(Web3Wrapper.toUnitAmount(totalSupply, 18)).to.be.bignumber.equal(expectedTotalSupply);
-        });
-
-        it('should be named 0x Protocol Token', async () => {
-            const name = await zrxToken.name().callAsync();
-            const expectedName = '0x Protocol Token';
-            expect(name).to.be.equal(expectedName);
-        });
-
-        it('should have the symbol ZRX', async () => {
-            const symbol = await zrxToken.symbol().callAsync();
-            const expectedSymbol = 'ZRX';
-            expect(symbol).to.be.equal(expectedSymbol);
-        });
-    });
-
-    describe('constructor', () => {
-        it('should initialize owner balance to totalSupply', async () => {
-            const ownerBalance = await zrxToken.balanceOf(owner).callAsync();
-            const totalSupply = new BigNumber(await zrxToken.totalSupply().callAsync());
-            expect(totalSupply).to.be.bignumber.equal(ownerBalance);
-        });
-    });
-
-    describe('transfer', () => {
-        it('should transfer balance from sender to receiver', async () => {
-            const receiver = spender;
-            const initOwnerBalance = await zrxToken.balanceOf(owner).callAsync();
-            const amountToTransfer = new BigNumber(1);
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await zrxToken.transfer(receiver, amountToTransfer).sendTransactionAsync({ from: owner }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-            const finalOwnerBalance = await zrxToken.balanceOf(owner).callAsync();
-            const finalReceiverBalance = await zrxToken.balanceOf(receiver).callAsync();
-
-            const expectedFinalOwnerBalance = initOwnerBalance.minus(amountToTransfer);
-            const expectedFinalReceiverBalance = amountToTransfer;
-            expect(finalOwnerBalance).to.be.bignumber.equal(expectedFinalOwnerBalance);
-            expect(finalReceiverBalance).to.be.bignumber.equal(expectedFinalReceiverBalance);
-        });
-
-        it('should return true on a 0 value transfer', async () => {
-            const didReturnTrue = await zrxToken.transfer(spender, new BigNumber(0)).callAsync({
-                from: owner,
-            });
-            expect(didReturnTrue).to.be.true();
-        });
-    });
-
-    describe('transferFrom', () => {
-        it('should return false if owner has insufficient balance', async () => {
-            const ownerBalance = await zrxToken.balanceOf(owner).callAsync();
-            const amountToTransfer = ownerBalance.plus(1);
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await zrxToken.approve(spender, amountToTransfer).sendTransactionAsync({
-                    from: owner,
-                    gas: constants.MAX_TOKEN_APPROVE_GAS,
-                }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-            const didReturnTrue = await zrxToken.transferFrom(owner, spender, amountToTransfer).callAsync({
-                from: spender,
-            });
-            expect(didReturnTrue).to.be.false();
-        });
-
-        it('should return false if spender has insufficient allowance', async () => {
-            const ownerBalance = await zrxToken.balanceOf(owner).callAsync();
-            const amountToTransfer = ownerBalance;
-
-            const spenderAllowance = await zrxToken.allowance(owner, spender).callAsync();
-            const isSpenderAllowanceInsufficient = spenderAllowance.comparedTo(amountToTransfer) < 0;
-            expect(isSpenderAllowanceInsufficient).to.be.true();
-
-            const didReturnTrue = await zrxToken.transferFrom(owner, spender, amountToTransfer).callAsync({
-                from: spender,
-            });
-            expect(didReturnTrue).to.be.false();
-        });
-
-        it('should return true on a 0 value transfer', async () => {
-            const amountToTransfer = new BigNumber(0);
-            const didReturnTrue = await zrxToken.transferFrom(owner, spender, amountToTransfer).callAsync({
-                from: spender,
-            });
-            expect(didReturnTrue).to.be.true();
-        });
-
-        it('should not modify spender allowance if spender allowance is 2^256 - 1', async () => {
-            const initOwnerBalance = await zrxToken.balanceOf(owner).callAsync();
-            const amountToTransfer = initOwnerBalance;
-            const initSpenderAllowance = MAX_UINT;
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await zrxToken.approve(spender, initSpenderAllowance).sendTransactionAsync({
-                    from: owner,
-                    gas: constants.MAX_TOKEN_APPROVE_GAS,
-                }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await zrxToken.transferFrom(owner, spender, amountToTransfer).sendTransactionAsync({
-                    from: spender,
-                    gas: constants.MAX_TOKEN_TRANSFERFROM_GAS,
-                }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-
-            const newSpenderAllowance = await zrxToken.allowance(owner, spender).callAsync();
-            expect(initSpenderAllowance).to.be.bignumber.equal(newSpenderAllowance);
-        });
-
-        it('should transfer the correct balances if spender has sufficient allowance', async () => {
-            const initOwnerBalance = await zrxToken.balanceOf(owner).callAsync();
-            const initSpenderBalance = await zrxToken.balanceOf(spender).callAsync();
-            const amountToTransfer = initOwnerBalance;
-            const initSpenderAllowance = initOwnerBalance;
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await zrxToken.approve(spender, initSpenderAllowance).sendTransactionAsync(),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await zrxToken.transferFrom(owner, spender, amountToTransfer).sendTransactionAsync({
-                    from: spender,
-                    gas: constants.MAX_TOKEN_TRANSFERFROM_GAS,
-                }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-
-            const newOwnerBalance = await zrxToken.balanceOf(owner).callAsync();
-            const newSpenderBalance = await zrxToken.balanceOf(spender).callAsync();
-
-            expect(newOwnerBalance).to.be.bignumber.equal(0);
-            expect(newSpenderBalance).to.be.bignumber.equal(initSpenderBalance.plus(initOwnerBalance));
-        });
-
-        it('should modify allowance if spender has sufficient allowance less than 2^256 - 1', async () => {
-            const initOwnerBalance = await zrxToken.balanceOf(owner).callAsync();
-            const amountToTransfer = initOwnerBalance;
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await zrxToken.approve(spender, amountToTransfer).sendTransactionAsync(),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-            await web3Wrapper.awaitTransactionSuccessAsync(
-                await zrxToken.transferFrom(owner, spender, amountToTransfer).sendTransactionAsync({
-                    from: spender,
-                    gas: constants.MAX_TOKEN_TRANSFERFROM_GAS,
-                }),
-                constants.AWAIT_TRANSACTION_MINED_MS,
-            );
-
-            const newSpenderAllowance = await zrxToken.allowance(owner, spender).callAsync();
-            expect(newSpenderAllowance).to.be.bignumber.equal(0);
-        });
-    });
-});

contracts/erc20/tsconfig.json

@@ -1,34 +0,0 @@
-{
-    "extends": "../../tsconfig",
-    "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
-    "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
-    "files": [
-        "generated-artifacts/DummyERC20Token.json",
-        "generated-artifacts/DummyMultipleReturnERC20Token.json",
-        "generated-artifacts/DummyNoReturnERC20Token.json",
-        "generated-artifacts/ERC20Token.json",
-        "generated-artifacts/WETH9.json",
-        "generated-artifacts/ZRXToken.json",
-        "test/generated-artifacts/DummyERC20Token.json",
-        "test/generated-artifacts/DummyMultipleReturnERC20Token.json",
-        "test/generated-artifacts/DummyNoReturnERC20Token.json",
-        "test/generated-artifacts/ERC20Token.json",
-        "test/generated-artifacts/IERC20Token.json",
-        "test/generated-artifacts/IERC20TokenV06.json",
-        "test/generated-artifacts/IERC20TokenV08.json",
-        "test/generated-artifacts/IEtherToken.json",
-        "test/generated-artifacts/IEtherTokenV06.json",
-        "test/generated-artifacts/IEtherTokenV08.json",
-        "test/generated-artifacts/LibERC20Token.json",
-        "test/generated-artifacts/LibERC20TokenV06.json",
-        "test/generated-artifacts/LibERC20TokenV08.json",
-        "test/generated-artifacts/MintableERC20Token.json",
-        "test/generated-artifacts/TestLibERC20Token.json",
-        "test/generated-artifacts/TestLibERC20TokenTarget.json",
-        "test/generated-artifacts/UnlimitedAllowanceERC20Token.json",
-        "test/generated-artifacts/UntransferrableDummyERC20Token.json",
-        "test/generated-artifacts/WETH9.json",
-        "test/generated-artifacts/ZRXToken.json"
-    ],
-    "exclude": ["./deploy/solc/solc_bin"]
-}

contracts/erc20/typedoc-tsconfig.json

@@ -1,7 +0,0 @@
-{
-    "extends": "../../typedoc-tsconfig",
-    "compilerOptions": {
-        "outDir": "lib"
-    },
-    "include": ["./src/**/*", "./test/**/*"]
-}

contracts/test-utils/CHANGELOG.json

@@ -1,4 +1,22 @@
 [
+    {
+        "timestamp": 1675210931,
+        "version": "5.4.47",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1675105183,
+        "version": "5.4.46",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1674517560,
         "version": "5.4.45",

contracts/test-utils/CHANGELOG.md

@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v5.4.47 - _February 1, 2023_
+
+    * Dependencies updated
+
+## v5.4.46 - _January 30, 2023_
+
+    * Dependencies updated
+
 ## v5.4.45 - _January 23, 2023_
 
     * Dependencies updated

contracts/test-utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-test-utils",
-    "version": "5.4.45",
+    "version": "5.4.47",
     "engines": {
         "node": ">=6.12"
     },
@@ -41,7 +41,7 @@
     "dependencies": {
         "@0x/assert": "^3.0.35",
         "@0x/base-contract": "^7.0.0",
-        "@0x/contract-addresses": "^8.0.1",
+        "@0x/contract-addresses": "^8.0.3",
         "@0x/dev-utils": "^5.0.0",
         "@0x/json-schemas": "^6.4.4",
         "@0x/order-utils": "^10.4.28",

contracts/test-utils/src/types.ts

@@ -90,7 +90,6 @@ export enum ContractName {
     DummyERC721Token = 'DummyERC721Token',
     TestLibBytes = 'TestLibBytes',
     TestWallet = 'TestWallet',
-    Authorizable = 'Authorizable',
     Whitelist = 'Whitelist',
     Forwarder = 'Forwarder',
     BalanceThresholdFilter = 'BalanceThresholdFilter',

contracts/treasury/CHANGELOG.json

@@ -1,4 +1,22 @@
 [
+    {
+        "timestamp": 1675210931,
+        "version": "1.4.40",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1675105183,
+        "version": "1.4.39",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1674517560,
         "version": "1.4.38",

contracts/treasury/CHANGELOG.md

@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.4.40 - _February 1, 2023_
+
+    * Dependencies updated
+
+## v1.4.39 - _January 30, 2023_
+
+    * Dependencies updated
+
 ## v1.4.38 - _January 23, 2023_
 
     * Dependencies updated

contracts/treasury/contracts/src/DefaultPoolOperator.sol

@@ -20,19 +20,19 @@
 pragma solidity ^0.6.12;
 pragma experimental ABIEncoderV2;
 
-import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
+import "@0x/contracts-erc20/src/IERC20Token.sol";
 import "./IStaking.sol";
 
 contract DefaultPoolOperator {
     // Immutables
     IStaking public immutable stakingProxy;
-    IERC20TokenV06 public immutable weth;
+    IERC20Token public immutable weth;
     bytes32 public immutable poolId;
 
     /// @dev Initializes this contract and creates a staking pool.
     /// @param stakingProxy_ The 0x staking proxy contract.
     /// @param weth_ The WETH token contract.
-    constructor(IStaking stakingProxy_, IERC20TokenV06 weth_) public {
+    constructor(IStaking stakingProxy_, IERC20Token weth_) public {
         stakingProxy = stakingProxy_;
         weth = weth_;
         // operator share = 100%

contracts/treasury/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-treasury",
-    "version": "1.4.38",
+    "version": "1.4.40",
     "engines": {
         "node": ">=6.12"
     },
@@ -46,12 +46,12 @@
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/treasury",
     "devDependencies": {
         "@0x/abi-gen": "^5.8.1",
-        "@0x/contract-addresses": "^8.0.1",
+        "@0x/contract-addresses": "^8.0.3",
         "@0x/contracts-asset-proxy": "^3.7.19",
-        "@0x/contracts-erc20": "^3.3.55",
+        "@0x/contracts-erc20": "3.3.57",
         "@0x/contracts-gen": "^2.0.48",
         "@0x/contracts-staking": "^2.0.45",
-        "@0x/contracts-test-utils": "^5.4.45",
+        "@0x/contracts-test-utils": "^5.4.47",
         "@0x/sol-compiler": "^4.8.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@types/isomorphic-fetch": "^0.0.35",
@@ -73,7 +73,7 @@
     },
     "dependencies": {
         "@0x/base-contract": "^7.0.0",
-        "@0x/protocol-utils": "^11.17.4",
+        "@0x/protocol-utils": "^11.17.6",
         "@0x/subproviders": "^7.0.0",
         "@0x/types": "^3.3.6",
         "@0x/typescript-typings": "^5.3.1",

contracts/utils/CHANGELOG.json

@@ -1,4 +1,22 @@
 [
+    {
+        "timestamp": 1675210931,
+        "version": "4.8.38",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1675105183,
+        "version": "4.8.37",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1674517560,
         "version": "4.8.36",

contracts/utils/CHANGELOG.md

@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.8.38 - _February 1, 2023_
+
+    * Dependencies updated
+
+## v4.8.37 - _January 30, 2023_
+
+    * Dependencies updated
+
 ## v4.8.36 - _January 23, 2023_
 
     * Dependencies updated

contracts/utils/contracts/src/Authorizable.sol

@@ -1,122 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./interfaces/IAuthorizable.sol";
-import "./LibAuthorizableRichErrors.sol";
-import "./LibRichErrors.sol";
-import "./Ownable.sol";
-
-contract Authorizable is Ownable, IAuthorizable {
-    /// @dev Only authorized addresses can invoke functions with this modifier.
-    modifier onlyAuthorized() {
-        _assertSenderIsAuthorized();
-        _;
-    }
-
-    /// @dev Whether an adderss is authorized to call privileged functions.
-    /// @param 0 Address to query.
-    /// @return 0 Whether the address is authorized.
-    mapping(address => bool) public authorized;
-    /// @dev Whether an adderss is authorized to call privileged functions.
-    /// @param 0 Index of authorized address.
-    /// @return 0 Authorized address.
-    address[] public authorities;
-
-    /// @dev Initializes the `owner` address.
-    constructor() public Ownable() {}
-
-    /// @dev Authorizes an address.
-    /// @param target Address to authorize.
-    function addAuthorizedAddress(address target) external onlyOwner {
-        _addAuthorizedAddress(target);
-    }
-
-    /// @dev Removes authorizion of an address.
-    /// @param target Address to remove authorization from.
-    function removeAuthorizedAddress(address target) external onlyOwner {
-        if (!authorized[target]) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.TargetNotAuthorizedError(target));
-        }
-        for (uint256 i = 0; i < authorities.length; i++) {
-            if (authorities[i] == target) {
-                _removeAuthorizedAddressAtIndex(target, i);
-                break;
-            }
-        }
-    }
-
-    /// @dev Removes authorizion of an address.
-    /// @param target Address to remove authorization from.
-    /// @param index Index of target in authorities array.
-    function removeAuthorizedAddressAtIndex(address target, uint256 index) external onlyOwner {
-        _removeAuthorizedAddressAtIndex(target, index);
-    }
-
-    /// @dev Gets all authorized addresses.
-    /// @return Array of authorized addresses.
-    function getAuthorizedAddresses() external view returns (address[] memory) {
-        return authorities;
-    }
-
-    /// @dev Reverts if msg.sender is not authorized.
-    function _assertSenderIsAuthorized() internal view {
-        if (!authorized[msg.sender]) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.SenderNotAuthorizedError(msg.sender));
-        }
-    }
-
-    /// @dev Authorizes an address.
-    /// @param target Address to authorize.
-    function _addAuthorizedAddress(address target) internal {
-        // Ensure that the target is not the zero address.
-        if (target == address(0)) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.ZeroCantBeAuthorizedError());
-        }
-
-        // Ensure that the target is not already authorized.
-        if (authorized[target]) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.TargetAlreadyAuthorizedError(target));
-        }
-
-        authorized[target] = true;
-        authorities.push(target);
-        emit AuthorizedAddressAdded(target, msg.sender);
-    }
-
-    /// @dev Removes authorizion of an address.
-    /// @param target Address to remove authorization from.
-    /// @param index Index of target in authorities array.
-    function _removeAuthorizedAddressAtIndex(address target, uint256 index) internal {
-        if (!authorized[target]) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.TargetNotAuthorizedError(target));
-        }
-        if (index >= authorities.length) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.IndexOutOfBoundsError(index, authorities.length));
-        }
-        if (authorities[index] != target) {
-            LibRichErrors.rrevert(LibAuthorizableRichErrors.AuthorizedAddressMismatchError(authorities[index], target));
-        }
-
-        delete authorized[target];
-        authorities[index] = authorities[authorities.length - 1];
-        authorities.length -= 1;
-        emit AuthorizedAddressRemoved(target, msg.sender);
-    }
-}

contracts/utils/contracts/src/D18.sol

@@ -1,159 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.16;
-
-/// @dev A library for working with 18 digit, base 10 decimals.
-library D18 {
-    /// @dev Decimal places for dydx value quantities.
-    uint256 private constant PRECISION = 18;
-    /// @dev 1.0 in base-18 decimal.
-    int256 private constant DECIMAL_ONE = int256(10 ** PRECISION);
-    /// @dev Minimum signed integer value.
-    int256 private constant MIN_INT256_VALUE =
-        int256(0x8000000000000000000000000000000000000000000000000000000000000000);
-
-    /// @dev Return `1.0`
-    function one() internal pure returns (int256 r) {
-        r = DECIMAL_ONE;
-    }
-
-    /// @dev Add two decimals.
-    function add(int256 a, int256 b) internal pure returns (int256 r) {
-        r = _add(a, b);
-    }
-
-    /// @dev Add two decimals.
-    function add(uint256 a, int256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _add(int256(a), b);
-    }
-
-    /// @dev Add two decimals.
-    function add(int256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _add(a, int256(b));
-    }
-
-    /// @dev Add two decimals.
-    function add(uint256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _add(int256(a), int256(b));
-    }
-
-    /// @dev Subract two decimals.
-    function sub(int256 a, int256 b) internal pure returns (int256 r) {
-        r = _add(a, -b);
-    }
-
-    /// @dev Subract two decimals.
-    function sub(uint256 a, int256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _add(int256(a), -b);
-    }
-
-    /// @dev Subract two decimals.
-    function sub(uint256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _add(int256(a), -int256(b));
-    }
-
-    /// @dev Multiply two decimals.
-    function mul(int256 a, int256 b) internal pure returns (int256 r) {
-        r = _div(_mul(a, b), DECIMAL_ONE);
-    }
-
-    /// @dev Multiply two decimals.
-    function mul(uint256 a, int256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _div(_mul(int256(a), b), DECIMAL_ONE);
-    }
-
-    /// @dev Multiply two decimals.
-    function mul(int256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _div(_mul(a, int256(b)), DECIMAL_ONE);
-    }
-
-    /// @dev Multiply two decimals.
-    function mul(uint256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _div(_mul(int256(a), int256(b)), DECIMAL_ONE);
-    }
-
-    /// @dev Divide two decimals.
-    function div(int256 a, int256 b) internal pure returns (int256 r) {
-        r = _div(_mul(a, DECIMAL_ONE), b);
-    }
-
-    /// @dev Divide two decimals.
-    function div(uint256 a, int256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _div(_mul(int256(a), DECIMAL_ONE), b);
-    }
-
-    /// @dev Divide two decimals.
-    function div(int256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _div(_mul(a, DECIMAL_ONE), int256(b));
-    }
-
-    /// @dev Divide two decimals.
-    function div(uint256 a, uint256 b) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        require(int256(b) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = _div(_mul(int256(a), DECIMAL_ONE), int256(b));
-    }
-
-    /// @dev Safely convert an unsigned integer into a signed integer.
-    function toSigned(uint256 a) internal pure returns (int256 r) {
-        require(int256(a) >= 0, "D18/DECIMAL_VALUE_TOO_BIG");
-        r = int256(a);
-    }
-
-    /// @dev Clip a signed value to be positive.
-    function clip(int256 a) internal pure returns (int256 r) {
-        r = a < 0 ? 0 : a;
-    }
-
-    /// @dev Safely multiply two signed integers.
-    function _mul(int256 a, int256 b) private pure returns (int256 r) {
-        if (a == 0 || b == 0) {
-            return 0;
-        }
-        r = a * b;
-        require(r / a == b && r / b == a, "D18/DECIMAL_MUL_OVERFLOW");
-        return r;
-    }
-
-    /// @dev Safely divide two signed integers.
-    function _div(int256 a, int256 b) private pure returns (int256 r) {
-        require(b != 0, "D18/DECIMAL_DIV_BY_ZERO");
-        require(a != MIN_INT256_VALUE || b != -1, "D18/DECIMAL_DIV_OVERFLOW");
-        r = a / b;
-    }
-
-    /// @dev Safely add two signed integers.
-    function _add(int256 a, int256 b) private pure returns (int256 r) {
-        r = a + b;
-        require(!((a < 0 && b < 0 && r > a) || (a > 0 && b > 0 && r < a)), "D18/DECIMAL_ADD_OVERFLOW");
-    }
-}

contracts/utils/contracts/src/DeploymentConstants.sol

@@ -1,251 +0,0 @@
-/*
-
-  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 ^0.5.9;
-
-contract DeploymentConstants {
-    // Mainnet addresses ///////////////////////////////////////////////////////
-    /// @dev Mainnet address of the WETH contract.
-    address private constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
-    /// @dev Mainnet address of the KyberNetworkProxy contract.
-    address private constant KYBER_NETWORK_PROXY_ADDRESS = 0x9AAb3f75489902f3a48495025729a0AF77d4b11e;
-    /// @dev Mainnet address of the KyberHintHandler contract.
-    address private constant KYBER_HINT_HANDLER_ADDRESS = 0xa1C0Fa73c39CFBcC11ec9Eb1Afc665aba9996E2C;
-    /// @dev Mainnet address of the `UniswapExchangeFactory` contract.
-    address private constant UNISWAP_EXCHANGE_FACTORY_ADDRESS = 0xc0a47dFe034B400B47bDaD5FecDa2621de6c4d95;
-    /// @dev Mainnet address of the `UniswapV2Router01` contract.
-    address private constant UNISWAP_V2_ROUTER_01_ADDRESS = 0xf164fC0Ec4E93095b804a4795bBe1e041497b92a;
-    /// @dev Mainnet address of the Eth2Dai `MatchingMarket` contract.
-    address private constant ETH2DAI_ADDRESS = 0x794e6e91555438aFc3ccF1c5076A74F42133d08D;
-    /// @dev Mainnet address of the `ERC20BridgeProxy` contract
-    address private constant ERC20_BRIDGE_PROXY_ADDRESS = 0x8ED95d1746bf1E4dAb58d8ED4724f1Ef95B20Db0;
-    ///@dev Mainnet address of the `Dai` (multi-collateral) contract
-    address private constant DAI_ADDRESS = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
-    /// @dev Mainnet address of the `Chai` contract
-    address private constant CHAI_ADDRESS = 0x06AF07097C9Eeb7fD685c692751D5C66dB49c215;
-    /// @dev Mainnet address of the 0x DevUtils contract.
-    address private constant DEV_UTILS_ADDRESS = 0x74134CF88b21383713E096a5ecF59e297dc7f547;
-    /// @dev Kyber ETH pseudo-address.
-    address internal constant KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
-    /// @dev Mainnet address of the dYdX contract.
-    address private constant DYDX_ADDRESS = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;
-    /// @dev Mainnet address of the GST2 contract
-    address private constant GST_ADDRESS = 0x0000000000b3F879cb30FE243b4Dfee438691c04;
-    /// @dev Mainnet address of the GST Collector
-    address private constant GST_COLLECTOR_ADDRESS = 0x000000D3b08566BE75A6DB803C03C85C0c1c5B96;
-    /// @dev Mainnet address of the mStable mUSD contract.
-    address private constant MUSD_ADDRESS = 0xe2f2a5C287993345a840Db3B0845fbC70f5935a5;
-    /// @dev Mainnet address of the Mooniswap Registry contract
-    address private constant MOONISWAP_REGISTRY = 0x71CD6666064C3A1354a3B4dca5fA1E2D3ee7D303;
-    /// @dev Mainnet address of the DODO Registry (ZOO) contract
-    address private constant DODO_REGISTRY = 0x3A97247DF274a17C59A3bd12735ea3FcDFb49950;
-    /// @dev Mainnet address of the DODO Helper contract
-    address private constant DODO_HELPER = 0x533dA777aeDCE766CEAe696bf90f8541A4bA80Eb;
-
-    // // Ropsten addresses ///////////////////////////////////////////////////////
-    /// @dev Mainnet address of the WETH contract.
-    // address constant private WETH_ADDRESS = 0xc778417E063141139Fce010982780140Aa0cD5Ab;
-    /// @dev Mainnet address of the KyberNetworkProxy contract.
-    // address constant private KYBER_NETWORK_PROXY_ADDRESS = 0xd719c34261e099Fdb33030ac8909d5788D3039C4;
-    /// @dev Mainnet address of the `UniswapExchangeFactory` contract.
-    // address constant private UNISWAP_EXCHANGE_FACTORY_ADDRESS = 0x9c83dCE8CA20E9aAF9D3efc003b2ea62aBC08351;
-    /// @dev Mainnet address of the `UniswapV2Router01` contract.
-    // address constant private UNISWAP_V2_ROUTER_01_ADDRESS = 0xf164fC0Ec4E93095b804a4795bBe1e041497b92a;
-    /// @dev Mainnet address of the Eth2Dai `MatchingMarket` contract.
-    // address constant private ETH2DAI_ADDRESS = address(0);
-    /// @dev Mainnet address of the `ERC20BridgeProxy` contract
-    // address constant private ERC20_BRIDGE_PROXY_ADDRESS = 0xb344afeD348de15eb4a9e180205A2B0739628339;
-    // ///@dev Mainnet address of the `Dai` (multi-collateral) contract
-    // address constant private DAI_ADDRESS = address(0);
-    /// @dev Mainnet address of the `Chai` contract
-    // address constant private CHAI_ADDRESS = address(0);
-    /// @dev Mainnet address of the 0x DevUtils contract.
-    // address constant private DEV_UTILS_ADDRESS = 0xC812AF3f3fBC62F76ea4262576EC0f49dB8B7f1c;
-    /// @dev Kyber ETH pseudo-address.
-    // address constant internal KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
-    /// @dev Mainnet address of the dYdX contract.
-    // address constant private DYDX_ADDRESS = address(0);
-    /// @dev Mainnet address of the GST2 contract
-    // address constant private GST_ADDRESS = address(0);
-    /// @dev Mainnet address of the GST Collector
-    // address constant private GST_COLLECTOR_ADDRESS = address(0);
-    /// @dev Mainnet address of the mStable mUSD contract.
-    // address constant private MUSD_ADDRESS = 0x4E1000616990D83e56f4b5fC6CC8602DcfD20459;
-
-    // // Rinkeby addresses ///////////////////////////////////////////////////////
-    /// @dev Mainnet address of the WETH contract.
-    // address constant private WETH_ADDRESS = 0xc778417E063141139Fce010982780140Aa0cD5Ab;
-    /// @dev Mainnet address of the KyberNetworkProxy contract.
-    // address constant private KYBER_NETWORK_PROXY_ADDRESS = 0x0d5371e5EE23dec7DF251A8957279629aa79E9C5;
-    /// @dev Mainnet address of the `UniswapExchangeFactory` contract.
-    // address constant private UNISWAP_EXCHANGE_FACTORY_ADDRESS = 0xf5D915570BC477f9B8D6C0E980aA81757A3AaC36;
-    /// @dev Mainnet address of the `UniswapV2Router01` contract.
-    // address constant private UNISWAP_V2_ROUTER_01_ADDRESS = 0xf164fC0Ec4E93095b804a4795bBe1e041497b92a;
-    /// @dev Mainnet address of the Eth2Dai `MatchingMarket` contract.
-    // address constant private ETH2DAI_ADDRESS = address(0);
-    /// @dev Mainnet address of the `ERC20BridgeProxy` contract
-    // address constant private ERC20_BRIDGE_PROXY_ADDRESS = 0xA2AA4bEFED748Fba27a3bE7Dfd2C4b2c6DB1F49B;
-    // ///@dev Mainnet address of the `Dai` (multi-collateral) contract
-    // address constant private DAI_ADDRESS = address(0);
-    /// @dev Mainnet address of the `Chai` contract
-    // address constant private CHAI_ADDRESS = address(0);
-    /// @dev Mainnet address of the 0x DevUtils contract.
-    // address constant private DEV_UTILS_ADDRESS = 0x46B5BC959e8A754c0256FFF73bF34A52Ad5CdfA9;
-    /// @dev Kyber ETH pseudo-address.
-    // address constant internal KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
-    /// @dev Mainnet address of the dYdX contract.
-    // address constant private DYDX_ADDRESS = address(0);
-    /// @dev Mainnet address of the GST2 contract
-    // address constant private GST_ADDRESS = address(0);
-    /// @dev Mainnet address of the GST Collector
-    // address constant private GST_COLLECTOR_ADDRESS = address(0);
-    /// @dev Mainnet address of the mStable mUSD contract.
-    // address constant private MUSD_ADDRESS = address(0);
-
-    // // Kovan addresses /////////////////////////////////////////////////////////
-    /// @dev Kovan address of the WETH contract.
-    // address constant private WETH_ADDRESS = 0xd0A1E359811322d97991E03f863a0C30C2cF029C;
-    /// @dev Kovan address of the KyberNetworkProxy contract.
-    // address constant private KYBER_NETWORK_PROXY_ADDRESS = 0x692f391bCc85cefCe8C237C01e1f636BbD70EA4D;
-    /// @dev Kovan address of the `UniswapExchangeFactory` contract.
-    // address constant private UNISWAP_EXCHANGE_FACTORY_ADDRESS = 0xD3E51Ef092B2845f10401a0159B2B96e8B6c3D30;
-    /// @dev Kovan address of the `UniswapV2Router01` contract.
-    // address constant private UNISWAP_V2_ROUTER_01_ADDRESS = 0xf164fC0Ec4E93095b804a4795bBe1e041497b92a;
-    /// @dev Kovan address of the Eth2Dai `MatchingMarket` contract.
-    // address constant private ETH2DAI_ADDRESS = 0xe325acB9765b02b8b418199bf9650972299235F4;
-    /// @dev Kovan address of the `ERC20BridgeProxy` contract
-    // address constant private ERC20_BRIDGE_PROXY_ADDRESS = 0x3577552C1Fb7A44aD76BeEB7aB53251668A21F8D;
-    /// @dev Kovan address of the `Chai` contract
-    // address constant private CHAI_ADDRESS = address(0);
-    /// @dev Kovan address of the `Dai` (multi-collateral) contract
-    // address constant private DAI_ADDRESS = 0x4F96Fe3b7A6Cf9725f59d353F723c1bDb64CA6Aa;
-    /// @dev Kovan address of the 0x DevUtils contract.
-    // address constant private DEV_UTILS_ADDRESS = 0x9402639A828BdF4E9e4103ac3B69E1a6E522eB59;
-    /// @dev Kyber ETH pseudo-address.
-    // address constant internal KYBER_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
-    /// @dev Kovan address of the dYdX contract.
-    // address constant private DYDX_ADDRESS = address(0);
-    /// @dev Kovan address of the GST2 contract
-    // address constant private GST_ADDRESS = address(0);
-    /// @dev Kovan address of the GST Collector
-    // address constant private GST_COLLECTOR_ADDRESS = address(0);
-    /// @dev Mainnet address of the mStable mUSD contract.
-    // address constant private MUSD_ADDRESS = address(0);
-
-    /// @dev Overridable way to get the `KyberNetworkProxy` address.
-    /// @return kyberAddress The `IKyberNetworkProxy` address.
-    function _getKyberNetworkProxyAddress() internal view returns (address kyberAddress) {
-        return KYBER_NETWORK_PROXY_ADDRESS;
-    }
-
-    /// @dev Overridable way to get the `KyberHintHandler` address.
-    /// @return kyberAddress The `IKyberHintHandler` address.
-    function _getKyberHintHandlerAddress() internal view returns (address hintHandlerAddress) {
-        return KYBER_HINT_HANDLER_ADDRESS;
-    }
-
-    /// @dev Overridable way to get the WETH address.
-    /// @return wethAddress The WETH address.
-    function _getWethAddress() internal view returns (address wethAddress) {
-        return WETH_ADDRESS;
-    }
-
-    /// @dev Overridable way to get the `UniswapExchangeFactory` address.
-    /// @return uniswapAddress The `UniswapExchangeFactory` address.
-    function _getUniswapExchangeFactoryAddress() internal view returns (address uniswapAddress) {
-        return UNISWAP_EXCHANGE_FACTORY_ADDRESS;
-    }
-
-    /// @dev Overridable way to get the `UniswapV2Router01` address.
-    /// @return uniswapRouterAddress The `UniswapV2Router01` address.
-    function _getUniswapV2Router01Address() internal view returns (address uniswapRouterAddress) {
-        return UNISWAP_V2_ROUTER_01_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the Eth2Dai `MatchingMarket` contract.
-    /// @return eth2daiAddress The Eth2Dai `MatchingMarket` contract.
-    function _getEth2DaiAddress() internal view returns (address eth2daiAddress) {
-        return ETH2DAI_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the `ERC20BridgeProxy` contract.
-    /// @return erc20BridgeProxyAddress The `ERC20BridgeProxy` contract.
-    function _getERC20BridgeProxyAddress() internal view returns (address erc20BridgeProxyAddress) {
-        return ERC20_BRIDGE_PROXY_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the `Dai` contract.
-    /// @return daiAddress The `Dai` contract.
-    function _getDaiAddress() internal view returns (address daiAddress) {
-        return DAI_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the `Chai` contract.
-    /// @return chaiAddress The `Chai` contract.
-    function _getChaiAddress() internal view returns (address chaiAddress) {
-        return CHAI_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the 0x `DevUtils` contract address.
-    /// @return devUtils The 0x `DevUtils` contract address.
-    function _getDevUtilsAddress() internal view returns (address devUtils) {
-        return DEV_UTILS_ADDRESS;
-    }
-
-    /// @dev Overridable way to get the DyDx contract.
-    /// @return exchange The DyDx exchange contract.
-    function _getDydxAddress() internal view returns (address dydxAddress) {
-        return DYDX_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the GST2 contract address.
-    /// @return gst The GST contract.
-    function _getGstAddress() internal view returns (address gst) {
-        return GST_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the GST Collector address.
-    /// @return collector The GST collector address.
-    function _getGstCollectorAddress() internal view returns (address collector) {
-        return GST_COLLECTOR_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the mStable mUSD address.
-    /// @return musd The mStable mUSD address.
-    function _getMUsdAddress() internal view returns (address musd) {
-        return MUSD_ADDRESS;
-    }
-
-    /// @dev An overridable way to retrieve the Mooniswap registry address.
-    /// @return registry The Mooniswap registry address.
-    function _getMooniswapAddress() internal view returns (address) {
-        return MOONISWAP_REGISTRY;
-    }
-
-    /// @dev An overridable way to retrieve the DODO Registry contract address.
-    /// @return registry The DODO Registry contract address.
-    function _getDODORegistryAddress() internal view returns (address) {
-        return DODO_REGISTRY;
-    }
-
-    /// @dev An overridable way to retrieve the DODO Helper contract address.
-    /// @return registry The DODO Helper contract address.
-    function _getDODOHelperAddress() internal view returns (address) {
-        return DODO_HELPER;
-    }
-}

contracts/utils/contracts/src/LibAddress.sol

@@ -1,46 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-/**
- * Utility library of inline functions on addresses
- */
-library LibAddress {
-    /**
-     * Returns whether the target address is a contract
-     * @dev This function will return false if invoked during the constructor of a contract,
-     * as the code is not actually created until after the constructor finishes.
-     * @param account address of the account to check
-     * @return whether the target address is a contract
-     */
-    function isContract(address account) internal view returns (bool) {
-        uint256 size;
-        // XXX Currently there is no better way to check if there is a contract in an address
-        // than to check the size of the code at that address.
-        // See https://ethereum.stackexchange.com/a/14016/36603
-        // for more details about how this works.
-        // TODO Check this again before the Serenity release, because all addresses will be
-        // contracts then.
-        // solium-disable-next-line security/no-inline-assembly
-        assembly {
-            size := extcodesize(account)
-        }
-        return size > 0;
-    }
-}

contracts/utils/contracts/src/LibAddressArray.sol

@@ -1,153 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./LibAddressArrayRichErrors.sol";
-import "./LibBytes.sol";
-import "./LibRichErrors.sol";
-
-library LibAddressArray {
-    /// @dev Append a new address to an array of addresses.
-    ///      The `addressArray` may need to be reallocated to make space
-    ///      for the new address. Because of this we return the resulting
-    ///      memory location of `addressArray`.
-    /// @param addressArray Array of addresses.
-    /// @param addressToAppend  Address to append.
-    /// @return Array of addresses: [... addressArray, addressToAppend]
-    function append(address[] memory addressArray, address addressToAppend) internal pure returns (address[] memory) {
-        // Get stats on address array and free memory
-        uint256 freeMemPtr = 0;
-        uint256 addressArrayBeginPtr = 0;
-        uint256 addressArrayEndPtr = 0;
-        uint256 addressArrayLength = addressArray.length;
-        uint256 addressArrayMemSizeInBytes = 32 + (32 * addressArrayLength);
-        assembly {
-            freeMemPtr := mload(0x40)
-            addressArrayBeginPtr := addressArray
-            addressArrayEndPtr := add(addressArray, addressArrayMemSizeInBytes)
-        }
-
-        // Cases for `freeMemPtr`:
-        //  `freeMemPtr` == `addressArrayEndPtr`: Nothing occupies memory after `addressArray`
-        //  `freeMemPtr` > `addressArrayEndPtr`: Some value occupies memory after `addressArray`
-        //  `freeMemPtr` < `addressArrayEndPtr`: Memory has not been managed properly.
-        if (freeMemPtr < addressArrayEndPtr) {
-            LibRichErrors.rrevert(LibAddressArrayRichErrors.MismanagedMemoryError(freeMemPtr, addressArrayEndPtr));
-        }
-
-        // If free memory begins at the end of `addressArray`
-        // then we can append `addressToAppend` directly.
-        // Otherwise, we must copy the array to free memory
-        // before appending new values to it.
-        if (freeMemPtr > addressArrayEndPtr) {
-            LibBytes.memCopy(freeMemPtr, addressArrayBeginPtr, addressArrayMemSizeInBytes);
-            assembly {
-                addressArray := freeMemPtr
-                addressArrayBeginPtr := addressArray
-            }
-        }
-
-        // Append `addressToAppend`
-        addressArrayLength += 1;
-        addressArrayMemSizeInBytes += 32;
-        addressArrayEndPtr = addressArrayBeginPtr + addressArrayMemSizeInBytes;
-        freeMemPtr = addressArrayEndPtr;
-        assembly {
-            // Store new array length
-            mstore(addressArray, addressArrayLength)
-
-            // Update `freeMemPtr`
-            mstore(0x40, freeMemPtr)
-        }
-        addressArray[addressArrayLength - 1] = addressToAppend;
-        return addressArray;
-    }
-
-    /// @dev Checks if an address array contains the target address.
-    /// @param addressArray Array of addresses.
-    /// @param target Address to search for in array.
-    /// @return True if the addressArray contains the target.
-    function contains(address[] memory addressArray, address target) internal pure returns (bool success) {
-        assembly {
-            // Calculate byte length of array
-            let arrayByteLen := mul(mload(addressArray), 32)
-            // Calculate beginning of array contents
-            let arrayContentsStart := add(addressArray, 32)
-            // Calclulate end of array contents
-            let arrayContentsEnd := add(arrayContentsStart, arrayByteLen)
-
-            // Loop through array
-            for {
-                let i := arrayContentsStart
-            } lt(i, arrayContentsEnd) {
-                i := add(i, 32)
-            } {
-                // Load array element
-                let arrayElement := mload(i)
-
-                // Return true if array element equals target
-                if eq(target, arrayElement) {
-                    // Set success to true
-                    success := 1
-                    // Break loop
-                    i := arrayContentsEnd
-                }
-            }
-        }
-        return success;
-    }
-
-    /// @dev Finds the index of an address within an array.
-    /// @param addressArray Array of addresses.
-    /// @param target Address to search for in array.
-    /// @return Existence and index of the target in the array.
-    function indexOf(
-        address[] memory addressArray,
-        address target
-    ) internal pure returns (bool success, uint256 index) {
-        assembly {
-            // Calculate byte length of array
-            let arrayByteLen := mul(mload(addressArray), 32)
-            // Calculate beginning of array contents
-            let arrayContentsStart := add(addressArray, 32)
-            // Calclulate end of array contents
-            let arrayContentsEnd := add(arrayContentsStart, arrayByteLen)
-
-            // Loop through array
-            for {
-                let i := arrayContentsStart
-            } lt(i, arrayContentsEnd) {
-                i := add(i, 32)
-            } {
-                // Load array element
-                let arrayElement := mload(i)
-
-                // Return true if array element equals target
-                if eq(target, arrayElement) {
-                    // Set success and index
-                    success := 1
-                    index := div(sub(i, arrayContentsStart), 32)
-                    // Break loop
-                    i := arrayContentsEnd
-                }
-            }
-        }
-        return (success, index);
-    }
-}

contracts/utils/contracts/src/LibAddressArrayRichErrors.sol

@@ -1,31 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-library LibAddressArrayRichErrors {
-    // bytes4(keccak256("MismanagedMemoryError(uint256,uint256)"))
-    bytes4 internal constant MISMANAGED_MEMORY_ERROR_SELECTOR = 0x5fc83722;
-
-    function MismanagedMemoryError(
-        uint256 freeMemPtr,
-        uint256 addressArrayEndPtr
-    ) internal pure returns (bytes memory) {
-        return abi.encodeWithSelector(MISMANAGED_MEMORY_ERROR_SELECTOR, freeMemPtr, addressArrayEndPtr);
-    }
-}

contracts/utils/contracts/src/LibAuthorizableRichErrors.sol

@@ -1,63 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-library LibAuthorizableRichErrors {
-    // bytes4(keccak256("AuthorizedAddressMismatchError(address,address)"))
-    bytes4 internal constant AUTHORIZED_ADDRESS_MISMATCH_ERROR_SELECTOR = 0x140a84db;
-
-    // bytes4(keccak256("IndexOutOfBoundsError(uint256,uint256)"))
-    bytes4 internal constant INDEX_OUT_OF_BOUNDS_ERROR_SELECTOR = 0xe9f83771;
-
-    // bytes4(keccak256("SenderNotAuthorizedError(address)"))
-    bytes4 internal constant SENDER_NOT_AUTHORIZED_ERROR_SELECTOR = 0xb65a25b9;
-
-    // bytes4(keccak256("TargetAlreadyAuthorizedError(address)"))
-    bytes4 internal constant TARGET_ALREADY_AUTHORIZED_ERROR_SELECTOR = 0xde16f1a0;
-
-    // bytes4(keccak256("TargetNotAuthorizedError(address)"))
-    bytes4 internal constant TARGET_NOT_AUTHORIZED_ERROR_SELECTOR = 0xeb5108a2;
-
-    // bytes4(keccak256("ZeroCantBeAuthorizedError()"))
-    bytes internal constant ZERO_CANT_BE_AUTHORIZED_ERROR_BYTES = hex"57654fe4";
-
-    function AuthorizedAddressMismatchError(address authorized, address target) internal pure returns (bytes memory) {
-        return abi.encodeWithSelector(AUTHORIZED_ADDRESS_MISMATCH_ERROR_SELECTOR, authorized, target);
-    }
-
-    function IndexOutOfBoundsError(uint256 index, uint256 length) internal pure returns (bytes memory) {
-        return abi.encodeWithSelector(INDEX_OUT_OF_BOUNDS_ERROR_SELECTOR, index, length);
-    }
-
-    function SenderNotAuthorizedError(address sender) internal pure returns (bytes memory) {
-        return abi.encodeWithSelector(SENDER_NOT_AUTHORIZED_ERROR_SELECTOR, sender);
-    }
-
-    function TargetAlreadyAuthorizedError(address target) internal pure returns (bytes memory) {
-        return abi.encodeWithSelector(TARGET_ALREADY_AUTHORIZED_ERROR_SELECTOR, target);
-    }
-
-    function TargetNotAuthorizedError(address target) internal pure returns (bytes memory) {
-        return abi.encodeWithSelector(TARGET_NOT_AUTHORIZED_ERROR_SELECTOR, target);
-    }
-
-    function ZeroCantBeAuthorizedError() internal pure returns (bytes memory) {
-        return ZERO_CANT_BE_AUTHORIZED_ERROR_BYTES;
-    }
-}

contracts/utils/contracts/src/LibEIP1271.sol

@@ -1,25 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-contract LibEIP1271 {
-    /// @dev Magic bytes returned by EIP1271 wallets on success.
-    /// @return 0 Magic bytes.
-    bytes4 public constant EIP1271_MAGIC_VALUE = 0x20c13b0b;
-}

contracts/utils/contracts/src/LibEIP712.sol

@@ -1,103 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-library LibEIP712 {
-    // Hash of the EIP712 Domain Separator Schema
-    // keccak256(abi.encodePacked(
-    //     "EIP712Domain(",
-    //     "string name,",
-    //     "string version,",
-    //     "uint256 chainId,",
-    //     "address verifyingContract",
-    //     ")"
-    // ))
-    bytes32 internal constant _EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH =
-        0x8b73c3c69bb8fe3d512ecc4cf759cc79239f7b179b0ffacaa9a75d522b39400f;
-
-    /// @dev Calculates a EIP712 domain separator.
-    /// @param name The EIP712 domain name.
-    /// @param version The EIP712 domain version.
-    /// @param verifyingContract The EIP712 verifying contract.
-    /// @return EIP712 domain separator.
-    function hashEIP712Domain(
-        string memory name,
-        string memory version,
-        uint256 chainId,
-        address verifyingContract
-    ) internal pure returns (bytes32 result) {
-        bytes32 schemaHash = _EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH;
-
-        // Assembly for more efficient computing:
-        // keccak256(abi.encodePacked(
-        //     _EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH,
-        //     keccak256(bytes(name)),
-        //     keccak256(bytes(version)),
-        //     chainId,
-        //     uint256(verifyingContract)
-        // ))
-
-        assembly {
-            // Calculate hashes of dynamic data
-            let nameHash := keccak256(add(name, 32), mload(name))
-            let versionHash := keccak256(add(version, 32), mload(version))
-
-            // Load free memory pointer
-            let memPtr := mload(64)
-
-            // Store params in memory
-            mstore(memPtr, schemaHash)
-            mstore(add(memPtr, 32), nameHash)
-            mstore(add(memPtr, 64), versionHash)
-            mstore(add(memPtr, 96), chainId)
-            mstore(add(memPtr, 128), verifyingContract)
-
-            // Compute hash
-            result := keccak256(memPtr, 160)
-        }
-        return result;
-    }
-
-    /// @dev Calculates EIP712 encoding for a hash struct with a given domain hash.
-    /// @param eip712DomainHash Hash of the domain domain separator data, computed
-    ///                         with getDomainHash().
-    /// @param hashStruct The EIP712 hash struct.
-    /// @return EIP712 hash applied to the given EIP712 Domain.
-    function hashEIP712Message(bytes32 eip712DomainHash, bytes32 hashStruct) internal pure returns (bytes32 result) {
-        // Assembly for more efficient computing:
-        // keccak256(abi.encodePacked(
-        //     EIP191_HEADER,
-        //     EIP712_DOMAIN_HASH,
-        //     hashStruct
-        // ));
-
-        assembly {
-            // Load free memory pointer
-            let memPtr := mload(64)
-
-            mstore(memPtr, 0x1901000000000000000000000000000000000000000000000000000000000000) // EIP191 header
-            mstore(add(memPtr, 2), eip712DomainHash) // EIP712 domain hash
-            mstore(add(memPtr, 34), hashStruct) // Hash of struct
-
-            // Compute hash
-            result := keccak256(memPtr, 66)
-        }
-        return result;
-    }
-}

contracts/utils/contracts/src/LibFractions.sol

@@ -1,96 +0,0 @@
-pragma solidity ^0.5.9;
-
-import "./LibSafeMath.sol";
-
-library LibFractions {
-    using LibSafeMath for uint256;
-
-    /// @dev Safely adds two fractions `n1/d1 + n2/d2`
-    /// @param n1 numerator of `1`
-    /// @param d1 denominator of `1`
-    /// @param n2 numerator of `2`
-    /// @param d2 denominator of `2`
-    /// @return numerator Numerator of sum
-    /// @return denominator Denominator of sum
-    function add(
-        uint256 n1,
-        uint256 d1,
-        uint256 n2,
-        uint256 d2
-    ) internal pure returns (uint256 numerator, uint256 denominator) {
-        if (n1 == 0) {
-            return (numerator = n2, denominator = d2);
-        }
-        if (n2 == 0) {
-            return (numerator = n1, denominator = d1);
-        }
-        numerator = n1.safeMul(d2).safeAdd(n2.safeMul(d1));
-        denominator = d1.safeMul(d2);
-        return (numerator, denominator);
-    }
-
-    /// @dev Rescales a fraction to prevent overflows during addition if either
-    ///      the numerator or the denominator are > `maxValue`.
-    /// @param numerator The numerator.
-    /// @param denominator The denominator.
-    /// @param maxValue The maximum value allowed for both the numerator and
-    ///        denominator.
-    /// @return scaledNumerator The rescaled numerator.
-    /// @return scaledDenominator The rescaled denominator.
-    function normalize(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 maxValue
-    ) internal pure returns (uint256 scaledNumerator, uint256 scaledDenominator) {
-        // If either the numerator or the denominator are > `maxValue`,
-        // re-scale them by `maxValue` to prevent overflows in future operations.
-        if (numerator > maxValue || denominator > maxValue) {
-            uint256 rescaleBase = numerator >= denominator ? numerator : denominator;
-            rescaleBase = rescaleBase.safeDiv(maxValue);
-            scaledNumerator = numerator.safeDiv(rescaleBase);
-            scaledDenominator = denominator.safeDiv(rescaleBase);
-        } else {
-            scaledNumerator = numerator;
-            scaledDenominator = denominator;
-        }
-        return (scaledNumerator, scaledDenominator);
-    }
-
-    /// @dev Rescales a fraction to prevent overflows during addition if either
-    ///      the numerator or the denominator are > 2 ** 127.
-    /// @param numerator The numerator.
-    /// @param denominator The denominator.
-    /// @return scaledNumerator The rescaled numerator.
-    /// @return scaledDenominator The rescaled denominator.
-    function normalize(
-        uint256 numerator,
-        uint256 denominator
-    ) internal pure returns (uint256 scaledNumerator, uint256 scaledDenominator) {
-        return normalize(numerator, denominator, 2 ** 127);
-    }
-
-    /// @dev Safely scales the difference between two fractions.
-    /// @param n1 numerator of `1`
-    /// @param d1 denominator of `1`
-    /// @param n2 numerator of `2`
-    /// @param d2 denominator of `2`
-    /// @param s scalar to multiply by difference.
-    /// @return result `s * (n1/d1 - n2/d2)`.
-    function scaleDifference(
-        uint256 n1,
-        uint256 d1,
-        uint256 n2,
-        uint256 d2,
-        uint256 s
-    ) internal pure returns (uint256 result) {
-        if (s == 0) {
-            return 0;
-        }
-        if (n2 == 0) {
-            return result = s.safeMul(n1).safeDiv(d1);
-        }
-        uint256 numerator = n1.safeMul(d2).safeSub(n2.safeMul(d1));
-        uint256 tmp = numerator.safeDiv(d2);
-        return s.safeMul(tmp).safeDiv(d1);
-    }
-}

contracts/utils/contracts/src/LibMath.sol

@@ -1,174 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./LibSafeMath.sol";
-import "./LibRichErrors.sol";
-import "./LibMathRichErrors.sol";
-
-library LibMath {
-    using LibSafeMath for uint256;
-
-    /// @dev Calculates partial value given a numerator and denominator rounded down.
-    ///      Reverts if rounding error is >= 0.1%
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target rounded down.
-    function safeGetPartialAmountFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) internal pure returns (uint256 partialAmount) {
-        if (isRoundingErrorFloor(numerator, denominator, target)) {
-            LibRichErrors.rrevert(LibMathRichErrors.RoundingError(numerator, denominator, target));
-        }
-
-        partialAmount = numerator.safeMul(target).safeDiv(denominator);
-        return partialAmount;
-    }
-
-    /// @dev Calculates partial value given a numerator and denominator rounded down.
-    ///      Reverts if rounding error is >= 0.1%
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target rounded up.
-    function safeGetPartialAmountCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) internal pure returns (uint256 partialAmount) {
-        if (isRoundingErrorCeil(numerator, denominator, target)) {
-            LibRichErrors.rrevert(LibMathRichErrors.RoundingError(numerator, denominator, target));
-        }
-
-        // safeDiv computes `floor(a / b)`. We use the identity (a, b integer):
-        //       ceil(a / b) = floor((a + b - 1) / b)
-        // To implement `ceil(a / b)` using safeDiv.
-        partialAmount = numerator.safeMul(target).safeAdd(denominator.safeSub(1)).safeDiv(denominator);
-
-        return partialAmount;
-    }
-
-    /// @dev Calculates partial value given a numerator and denominator rounded down.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target rounded down.
-    function getPartialAmountFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) internal pure returns (uint256 partialAmount) {
-        partialAmount = numerator.safeMul(target).safeDiv(denominator);
-        return partialAmount;
-    }
-
-    /// @dev Calculates partial value given a numerator and denominator rounded down.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target rounded up.
-    function getPartialAmountCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) internal pure returns (uint256 partialAmount) {
-        // safeDiv computes `floor(a / b)`. We use the identity (a, b integer):
-        //       ceil(a / b) = floor((a + b - 1) / b)
-        // To implement `ceil(a / b)` using safeDiv.
-        partialAmount = numerator.safeMul(target).safeAdd(denominator.safeSub(1)).safeDiv(denominator);
-
-        return partialAmount;
-    }
-
-    /// @dev Checks if rounding error >= 0.1% when rounding down.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to multiply with numerator/denominator.
-    /// @return Rounding error is present.
-    function isRoundingErrorFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) internal pure returns (bool isError) {
-        if (denominator == 0) {
-            LibRichErrors.rrevert(LibMathRichErrors.DivisionByZeroError());
-        }
-
-        // The absolute rounding error is the difference between the rounded
-        // value and the ideal value. The relative rounding error is the
-        // absolute rounding error divided by the absolute value of the
-        // ideal value. This is undefined when the ideal value is zero.
-        //
-        // The ideal value is `numerator * target / denominator`.
-        // Let's call `numerator * target % denominator` the remainder.
-        // The absolute error is `remainder / denominator`.
-        //
-        // When the ideal value is zero, we require the absolute error to
-        // be zero. Fortunately, this is always the case. The ideal value is
-        // zero iff `numerator == 0` and/or `target == 0`. In this case the
-        // remainder and absolute error are also zero.
-        if (target == 0 || numerator == 0) {
-            return false;
-        }
-
-        // Otherwise, we want the relative rounding error to be strictly
-        // less than 0.1%.
-        // The relative error is `remainder / (numerator * target)`.
-        // We want the relative error less than 1 / 1000:
-        //        remainder / (numerator * denominator)  <  1 / 1000
-        // or equivalently:
-        //        1000 * remainder  <  numerator * target
-        // so we have a rounding error iff:
-        //        1000 * remainder  >=  numerator * target
-        uint256 remainder = mulmod(target, numerator, denominator);
-        isError = remainder.safeMul(1000) >= numerator.safeMul(target);
-        return isError;
-    }
-
-    /// @dev Checks if rounding error >= 0.1% when rounding up.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to multiply with numerator/denominator.
-    /// @return Rounding error is present.
-    function isRoundingErrorCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) internal pure returns (bool isError) {
-        if (denominator == 0) {
-            LibRichErrors.rrevert(LibMathRichErrors.DivisionByZeroError());
-        }
-
-        // See the comments in `isRoundingError`.
-        if (target == 0 || numerator == 0) {
-            // When either is zero, the ideal value and rounded value are zero
-            // and there is no rounding error. (Although the relative error
-            // is undefined.)
-            return false;
-        }
-        // Compute remainder as before
-        uint256 remainder = mulmod(target, numerator, denominator);
-        remainder = denominator.safeSub(remainder) % denominator;
-        isError = remainder.safeMul(1000) >= numerator.safeMul(target);
-        return isError;
-    }
-}

contracts/utils/contracts/src/LibMathRichErrors.sol

@@ -1,21 +0,0 @@
-pragma solidity ^0.5.9;
-
-library LibMathRichErrors {
-    // bytes4(keccak256("DivisionByZeroError()"))
-    bytes internal constant DIVISION_BY_ZERO_ERROR = hex"a791837c";
-
-    // bytes4(keccak256("RoundingError(uint256,uint256,uint256)"))
-    bytes4 internal constant ROUNDING_ERROR_SELECTOR = 0x339f3de2;
-
-    function DivisionByZeroError() internal pure returns (bytes memory) {
-        return DIVISION_BY_ZERO_ERROR;
-    }
-
-    function RoundingError(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) internal pure returns (bytes memory) {
-        return abi.encodeWithSelector(ROUNDING_ERROR_SELECTOR, numerator, denominator, target);
-    }
-}

contracts/utils/contracts/src/Refundable.sol

@@ -1,74 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./ReentrancyGuard.sol";
-
-contract Refundable is ReentrancyGuard {
-    // This bool is used by the refund modifier to allow for lazily evaluated refunds.
-    bool internal _shouldNotRefund;
-
-    modifier refundFinalBalance() {
-        _;
-        _refundNonZeroBalanceIfEnabled();
-    }
-
-    modifier refundFinalBalanceNoReentry() {
-        _lockMutexOrThrowIfAlreadyLocked();
-        _;
-        _refundNonZeroBalanceIfEnabled();
-        _unlockMutex();
-    }
-
-    modifier disableRefundUntilEnd() {
-        if (_areRefundsDisabled()) {
-            _;
-        } else {
-            _disableRefund();
-            _;
-            _enableAndRefundNonZeroBalance();
-        }
-    }
-
-    function _refundNonZeroBalanceIfEnabled() internal {
-        if (!_areRefundsDisabled()) {
-            _refundNonZeroBalance();
-        }
-    }
-
-    function _refundNonZeroBalance() internal {
-        uint256 balance = address(this).balance;
-        if (balance > 0) {
-            msg.sender.transfer(balance);
-        }
-    }
-
-    function _disableRefund() internal {
-        _shouldNotRefund = true;
-    }
-
-    function _enableAndRefundNonZeroBalance() internal {
-        _shouldNotRefund = false;
-        _refundNonZeroBalance();
-    }
-
-    function _areRefundsDisabled() internal view returns (bool) {
-        return _shouldNotRefund;
-    }
-}

contracts/utils/contracts/src/interfaces/IAuthorizable.sol

@@ -1,46 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./IOwnable.sol";
-
-contract IAuthorizable is IOwnable {
-    // Event logged when a new address is authorized.
-    event AuthorizedAddressAdded(address indexed target, address indexed caller);
-
-    // Event logged when a currently authorized address is unauthorized.
-    event AuthorizedAddressRemoved(address indexed target, address indexed caller);
-
-    /// @dev Authorizes an address.
-    /// @param target Address to authorize.
-    function addAuthorizedAddress(address target) external;
-
-    /// @dev Removes authorizion of an address.
-    /// @param target Address to remove authorization from.
-    function removeAuthorizedAddress(address target) external;
-
-    /// @dev Removes authorizion of an address.
-    /// @param target Address to remove authorization from.
-    /// @param index Index of target in authorities array.
-    function removeAuthorizedAddressAtIndex(address target, uint256 index) external;
-
-    /// @dev Gets all authorized addresses.
-    /// @return Array of authorized addresses.
-    function getAuthorizedAddresses() external view returns (address[] memory);
-}

contracts/utils/contracts/src/v06/ReentrancyGuardV06.sol

@@ -1,50 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-/*
-
-  Copyright 2020 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.6.5;
-
-import "./errors/LibReentrancyGuardRichErrorsV06.sol";
-import "./errors/LibRichErrorsV06.sol";
-
-contract ReentrancyGuardV06 {
-    // Locked state of mutex.
-    bool private _locked = false;
-
-    /// @dev Functions with this modifer cannot be reentered. The mutex will be locked
-    ///      before function execution and unlocked after.
-    modifier nonReentrant() {
-        _lockMutexOrThrowIfAlreadyLocked();
-        _;
-        _unlockMutex();
-    }
-
-    function _lockMutexOrThrowIfAlreadyLocked() internal {
-        // Ensure mutex is unlocked.
-        if (_locked) {
-            LibRichErrorsV06.rrevert(LibReentrancyGuardRichErrorsV06.IllegalReentrancyError());
-        }
-        // Lock mutex.
-        _locked = true;
-    }
-
-    function _unlockMutex() internal {
-        // Unlock mutex.
-        _locked = false;
-    }
-}

contracts/utils/contracts/test/TestAuthorizable.sol

@@ -1,25 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../src/Authorizable.sol";
-
-contract TestAuthorizable is Authorizable {
-    function onlyAuthorizedFn() external view onlyAuthorized {}
-}

contracts/utils/contracts/test/TestLibAddress.sol

@@ -1,29 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../src/LibAddress.sol";
-
-contract TestLibAddress {
-    using LibAddress for address;
-
-    function externalIsContract(address account) external view returns (bool) {
-        return account.isContract();
-    }
-}

contracts/utils/contracts/test/TestLibAddressArray.sol

@@ -1,89 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.5;
-
-import "../src/LibAddressArray.sol";
-
-contract TestLibAddressArray {
-    using LibAddressArray for address[];
-
-    /// @dev Append a new address to an array of addresses.
-    ///      The `addressArray` may need to be reallocated to make space
-    ///      for the new address. Because of this we return the resulting
-    ///      memory location of `addressArray`.
-    /// @param addressArray Array of addresses.
-    /// @param addressToAppend  Address to append.
-    /// @return Array of addresses: [... addressArray, addressToAppend]
-    function publicAppend(
-        address[] memory addressArray,
-        address addressToAppend
-    ) public pure returns (address[] memory) {
-        return addressArray.append(addressToAppend);
-    }
-
-    /// @dev Moves the free memory pointer by `freeMemOffset` bytes,
-    ///      then performs the append.
-    ///      This tests the behavior of the address array being reallocated if
-    ///      the memory immediately after the old array is claimed.
-    /// @param addressArray Array of addresses.
-    /// @param freeMemOffset Number of (signed) bytes to offset the free memory pointer (0x40).
-    /// @param addressToAppend Address to append.
-    /// @return The new address array.
-    /// @return The memory address of the old address array.
-    /// @return The memory address of the new address array.
-    function testAppendRealloc(
-        address[] memory addressArray,
-        int256 freeMemOffset,
-        address addressToAppend
-    ) public pure returns (address[] memory result, uint256 oldArrayMemStart, uint256 newArrayMemStart) {
-        assembly {
-            // Remember the original memory address of the array.
-            oldArrayMemStart := addressArray
-            // Move the free memory pointer.
-            mstore(0x40, add(mload(0x40), freeMemOffset))
-        }
-
-        // Call append.
-        result = addressArray.append(addressToAppend);
-
-        // Get the new array memory address.
-        assembly {
-            newArrayMemStart := result
-        }
-    }
-
-    /// @dev Checks if an address array contains the target address.
-    /// @param addressArray Array of addresses.
-    /// @param target Address to search for in array.
-    /// @return True if the addressArray contains the target.
-    function publicContains(address[] memory addressArray, address target) public pure returns (bool success) {
-        return addressArray.contains(target);
-    }
-
-    /// @dev Finds the index of an address within an array.
-    /// @param addressArray Array of addresses.
-    /// @param target Address to search for in array.
-    /// @return Existence and index of the target in the array.
-    function publicIndexOf(
-        address[] memory addressArray,
-        address target
-    ) public pure returns (bool success, uint256 index) {
-        (success, index) = addressArray.indexOf(target);
-    }
-}

contracts/utils/contracts/test/TestLibEIP712.sol

@@ -1,36 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../src/LibEIP712.sol";
-
-contract TestLibEIP712 {
-    function externalHashEIP712DomainSeperator(
-        string calldata name,
-        string calldata version,
-        uint256 chainid,
-        address verifyingcontractaddress
-    ) external pure returns (bytes32) {
-        return LibEIP712.hashEIP712Domain(name, version, chainid, verifyingcontractaddress);
-    }
-
-    function externalHashEIP712Message(bytes32 eip712DomainHash, bytes32 hashStruct) external pure returns (bytes32) {
-        return LibEIP712.hashEIP712Message(eip712DomainHash, hashStruct);
-    }
-}

contracts/utils/contracts/test/TestLibMath.sol

@@ -1,104 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-pragma experimental ABIEncoderV2;
-
-import "../src/LibMath.sol";
-
-contract TestLibMath {
-    /// @dev Calculates partial value given a numerator and denominator.
-    ///      Reverts if rounding error is >= 0.1%
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target.
-    function safeGetPartialAmountFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) public pure returns (uint256 partialAmount) {
-        return LibMath.safeGetPartialAmountFloor(numerator, denominator, target);
-    }
-
-    /// @dev Calculates partial value given a numerator and denominator.
-    ///      Reverts if rounding error is >= 0.1%
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target.
-    function safeGetPartialAmountCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) public pure returns (uint256 partialAmount) {
-        return LibMath.safeGetPartialAmountCeil(numerator, denominator, target);
-    }
-
-    /// @dev Calculates partial value given a numerator and denominator.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target.
-    function getPartialAmountFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) public pure returns (uint256 partialAmount) {
-        return LibMath.getPartialAmountFloor(numerator, denominator, target);
-    }
-
-    /// @dev Calculates partial value given a numerator and denominator.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target.
-    function getPartialAmountCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) public pure returns (uint256 partialAmount) {
-        return LibMath.getPartialAmountCeil(numerator, denominator, target);
-    }
-
-    /// @dev Checks if rounding error >= 0.1%.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to multiply with numerator/denominator.
-    /// @return Rounding error is present.
-    function isRoundingErrorFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) public pure returns (bool isError) {
-        return LibMath.isRoundingErrorFloor(numerator, denominator, target);
-    }
-
-    /// @dev Checks if rounding error >= 0.1%.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to multiply with numerator/denominator.
-    /// @return Rounding error is present.
-    function isRoundingErrorCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    ) public pure returns (bool isError) {
-        return LibMath.isRoundingErrorCeil(numerator, denominator, target);
-    }
-}

contracts/utils/contracts/test/TestLogDecoding.sol

@@ -1,43 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.5;
-
-import "./TestLogDecodingDownstream.sol";
-
-contract TestLogDecoding {
-    /// @dev arbitrary event; fields to not matter.
-    event TestEvent(uint256 foo, bytes bar, string car);
-
-    /// @dev Emits a local event
-    function emitEvent() public {
-        emit TestEvent(256, hex"1234", "4321");
-    }
-
-    /// @dev Emits an event in a downstream contract
-    function emitEventDownstream() public {
-        TestLogDecodingDownstream testLogDecodingDownstream = new TestLogDecodingDownstream();
-        ITestLogDecodingDownstream(testLogDecodingDownstream).emitEvent();
-    }
-
-    /// @dev Emits a local event and a downstream event
-    function emitEventsLocalAndDownstream() public {
-        emitEvent();
-        emitEventDownstream();
-    }
-}

contracts/utils/contracts/test/TestLogDecodingDownstream.sol

@@ -1,37 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.5;
-
-contract ITestLogDecodingDownstream {
-    /// @dev Emits a local event
-    function emitEvent() external;
-}
-
-contract TestLogDecodingDownstream is ITestLogDecodingDownstream {
-    /// @dev event with fields different than those in `TestLogDecoding.TestEvent`
-    /// Note: do not include this in the interface
-    /// For testing, we want to emit an event that is
-    /// not known by the calling contract.
-    event TestEvent2(uint256 lorem, string ipsum);
-
-    /// @dev Emits a local event
-    function emitEvent() external {
-        emit TestEvent2(256, "4321");
-    }
-}

contracts/utils/contracts/test/TestRefundable.sol

@@ -1,49 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "../src/Refundable.sol";
-
-contract TestRefundable is Refundable {
-    function refundNonZeroBalanceExternal() external payable {
-        _refundNonZeroBalance();
-    }
-
-    function setShouldNotRefund(bool shouldNotRefundNew) external {
-        _shouldNotRefund = shouldNotRefundNew;
-    }
-
-    function getShouldNotRefund() external view returns (bool) {
-        return _shouldNotRefund;
-    }
-
-    function refundFinalBalanceFunction() public payable refundFinalBalance {}
-
-    function disableRefundUntilEndFunction() public payable disableRefundUntilEnd {}
-
-    function nestedDisableRefundUntilEndFunction() public payable disableRefundUntilEnd returns (uint256) {
-        disableRefundUntilEndFunction();
-        return address(this).balance;
-    }
-
-    function mixedRefundModifierFunction() public payable disableRefundUntilEnd returns (uint256) {
-        refundFinalBalanceFunction();
-        return address(this).balance;
-    }
-}

contracts/utils/contracts/test/TestRefundableReceiver.sol

@@ -1,154 +0,0 @@
-/*
-
-  Copyright 2019 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.5.9;
-
-import "./TestRefundable.sol";
-
-contract TestRefundableReceiver {
-    /// @dev A payable fallback function is necessary to receive refunds from the `TestRefundable` contract.
-    ///      This function ensures that zero value is not sent to the contract, which tests the feature of
-    ///      of the `refundNonzeroBalance` that doesn't transfer if the balance is zero.
-    function() external payable {
-        // Ensure that a value of zero was not transferred to the contract.
-        require(msg.value != 0, "Zero value should not be sent to this contract.");
-    }
-
-    /// @dev This function tests the behavior of the `refundNonzeroBalance` function by checking whether or
-    ///      not the `callCounter` state variable changes after the `refundNonzeroBalance` is called.
-    /// @param testRefundable The TestRefundable that should be tested against.
-    function testRefundNonZeroBalance(TestRefundable testRefundable) external payable {
-        // Call `refundNonzeroBalance()` and forward all of the eth sent to the contract.
-        testRefundable.refundNonZeroBalanceExternal.value(msg.value)();
-
-        // If the value sent was nonzero, a check that a refund was received will be executed. Otherwise, the fallback
-        // function contains a check that will fail in the event that a value of zero was sent to the contract.
-        if (msg.value > 0) {
-            // Ensure that a full refund was provided to this contract.
-            require(address(this).balance == msg.value, "A full refund was not provided by `refundNonzeroBalance`");
-        }
-    }
-
-    /// @dev This function tests the behavior to a simple call to `refundFinalBalanceFunction`. This
-    ///      test will verify that the correct refund was provided after the call (depending on whether
-    ///      a refund should be provided), and it will ensure that the `shouldNotRefund` state variable
-    ///      remains unaltered after the function call.
-    /// @param testRefundable The TestRefundable that should be tested against.
-    /// @param shouldNotRefund The value that shouldNotRefund should be set to before the call to TestRefundable.
-    function testRefundFinalBalance(TestRefundable testRefundable, bool shouldNotRefund) external payable {
-        // Set `shouldNotRefund` to the specified bool.
-        testRefundable.setShouldNotRefund(shouldNotRefund);
-
-        // Call `refundFinalBalanceFunction` and forward all value from the contract.
-        testRefundable.refundFinalBalanceFunction.value(msg.value)();
-
-        // Assert that the expected refunds happened and that the `shouldNotRefund` value was
-        // set back to an unaltered state after the call.
-        requireCorrectFinalBalancesAndState(testRefundable, shouldNotRefund);
-    }
-
-    /// @dev This function tests the behavior to a simple call to `disableRefundUntilEndFunction`. This
-    ///      test will verify that the correct refund was provided after the call (depending on whether
-    ///      a refund should be provided), and it will ensure that the `shouldNotRefund` state variable
-    ///      remains unaltered after the function call.
-    /// @param testRefundable The TestRefundable that should be tested against.
-    /// @param shouldNotRefund The value that shouldNotRefund should be set to before the call to TestRefundable.
-    function testDisableRefundUntilEnd(TestRefundable testRefundable, bool shouldNotRefund) external payable {
-        // Set `shouldNotRefund` to the specified bool.
-        testRefundable.setShouldNotRefund(shouldNotRefund);
-
-        // Call `disableRefundUntilEndFunction` and forward all value from the contract.
-        testRefundable.disableRefundUntilEndFunction.value(msg.value)();
-
-        // Assert that the expected refunds happened and that the `shouldNotRefund` value was
-        // set back to an unaltered state after the call.
-        requireCorrectFinalBalancesAndState(testRefundable, shouldNotRefund);
-    }
-
-    /// @dev This function tests the behavior of a call to a function that has the `disableRefundUntilEndFunction`.
-    ///      The function that is called also uses the `disableRefundUntilEndFunction`, so this function's role is
-    ///      to verify that both the inner and outer modifiers worked correctly.
-    /// @param testRefundable The TestRefundable that should be tested against.
-    /// @param shouldNotRefund The value that shouldNotRefund should be set to before the call to TestRefundable.
-    function testNestedDisableRefundUntilEnd(TestRefundable testRefundable, bool shouldNotRefund) external payable {
-        // Set `shouldNotRefund` to the specified bool.
-        testRefundable.setShouldNotRefund(shouldNotRefund);
-
-        // Call `nestedDisableRefundUntilEndFunction` and forward all value from the contract.
-        uint256 balanceWithinCall = testRefundable.nestedDisableRefundUntilEndFunction.value(msg.value)();
-
-        // Ensure that the balance within the call was equal to `msg.value` since the inner refund should
-        // not have been triggered regardless of the value of `shouldNotRefund`.
-        require(balanceWithinCall == msg.value, "Incorrect inner balance");
-
-        // Assert that the expected refunds happened and that the `shouldNotRefund` value was
-        // set back to an unaltered state after the call.
-        requireCorrectFinalBalancesAndState(testRefundable, shouldNotRefund);
-    }
-
-    /// @dev This function tests the behavior of a call to a function that has the `disableRefundUntilEndFunction`.
-    ///      The function that is called uses the `refundFinalBalanceFunction`, so this function's role is
-    ///      to verify that both the inner and outer modifiers worked correctly.
-    /// @param testRefundable The TestRefundable that should be tested against.
-    /// @param shouldNotRefund The value that shouldNotRefund should be set to before the call to TestRefundable.
-    function testMixedRefunds(TestRefundable testRefundable, bool shouldNotRefund) external payable {
-        // Set `shouldNotRefund` to the specified bool.
-        testRefundable.setShouldNotRefund(shouldNotRefund);
-
-        // Call `mixedRefundModifierFunction` and forward all value from the contract.
-        uint256 balanceWithinCall = testRefundable.mixedRefundModifierFunction.value(msg.value)();
-
-        // Ensure that the balance within the call was equal to `msg.value` since the inner refund should
-        // not have been triggered regardless of the value of `shouldNotRefund`.
-        require(balanceWithinCall == msg.value, "Incorrect inner balance");
-
-        // Assert that the expected refunds happened and that the `shouldNotRefund` value was
-        // set back to an unaltered state after the call.
-        requireCorrectFinalBalancesAndState(testRefundable, shouldNotRefund);
-    }
-
-    /// @dev This helper function verifies the final balances of this receiver contract and a specified
-    ///      refundable contract and verifies that the `shouldNotRefund` value remains unaltered.
-    /// @param testRefundable The TestRefundable that should be tested against.
-    /// @param shouldNotRefund The value that shouldNotRefund was set to before the call to TestRefundable.
-    function requireCorrectFinalBalancesAndState(TestRefundable testRefundable, bool shouldNotRefund) internal {
-        // If `shouldNotRefund` was true, then this contract should have a balance of zero,
-        // and `testRefundable` should have a balance of `msg.value`. Otherwise, the opposite
-        // should be true.
-        if (shouldNotRefund) {
-            // Ensure that this contract's balance is zero.
-            require(address(this).balance == 0, "Incorrect balance for TestRefundableReceiver");
-
-            // Ensure that the other contract's balance is equal to `msg.value`.
-            require(address(testRefundable).balance == msg.value, "Incorrect balance for TestRefundable");
-        } else {
-            // Ensure that this contract's balance is `msg.value`.
-            require(address(this).balance == msg.value, "Incorrect balance for TestRefundableReceiver");
-
-            // Ensure that the other contract's balance is equal to zero.
-            require(address(testRefundable).balance == 0, "Incorrect balance for TestRefundable");
-        }
-
-        // Ensure that `shouldNotRefund` in TestRefundable is set to the parameter `shouldNotRefund`
-        // after the call (i.e. the value didn't change during the function call).
-        require(testRefundable.getShouldNotRefund() == shouldNotRefund, "Incorrect shouldNotRefund value");
-
-        // Drain the contract of funds so that subsequent tests don't have to account for leftover ether.
-        msg.sender.transfer(address(this).balance);
-    }
-}

contracts/utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-utils",
-    "version": "4.8.36",
+    "version": "4.8.38",
     "engines": {
         "node": ">=6.12"
     },
@@ -30,9 +30,9 @@
         "contracts:copy": "contracts-gen copy"
     },
     "config": {
-        "publicInterfaceContracts": "Authorizable,IAuthorizable,IOwnable,LibAddress,LibAddressArray,LibAddressArrayRichErrors,LibAuthorizableRichErrors,LibBytes,LibBytesRichErrors,LibEIP1271,LibEIP712,LibFractions,LibOwnableRichErrors,LibReentrancyGuardRichErrors,LibRichErrors,LibMath,LibMathRichErrors,LibSafeMath,LibSafeMathRichErrors,Ownable,ReentrancyGuard,Refundable",
+        "publicInterfaceContracts": "IOwnable,LibBytes,LibBytesRichErrors,LibOwnableRichErrors,LibReentrancyGuardRichErrors,LibRichErrors,LibSafeMath,LibSafeMathRichErrors,Ownable,ReentrancyGuard",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually.",
-        "abis": "./test/generated-artifacts/@(Authorizable|AuthorizableV06|AuthorizableV08|D18|DeploymentConstants|IAuthorizable|IAuthorizableV06|IAuthorizableV08|IOwnable|IOwnableV06|IOwnableV08|LibAddress|LibAddressArray|LibAddressArrayRichErrors|LibAuthorizableRichErrors|LibAuthorizableRichErrorsV06|LibAuthorizableRichErrorsV08|LibBytes|LibBytesRichErrors|LibBytesRichErrorsV06|LibBytesRichErrorsV08|LibBytesV06|LibBytesV08|LibEIP1271|LibEIP712|LibFractions|LibMath|LibMathRichErrors|LibMathRichErrorsV06|LibMathRichErrorsV08|LibMathV06|LibMathV08|LibOwnableRichErrors|LibOwnableRichErrorsV06|LibOwnableRichErrorsV08|LibReentrancyGuardRichErrors|LibReentrancyGuardRichErrorsV06|LibReentrancyGuardRichErrorsV08|LibRichErrors|LibRichErrorsV06|LibRichErrorsV08|LibSafeMath|LibSafeMathRichErrors|LibSafeMathRichErrorsV06|LibSafeMathRichErrorsV08|LibSafeMathV06|Ownable|OwnableV06|OwnableV08|ReentrancyGuard|ReentrancyGuardV06|ReentrancyGuardV08|Refundable|TestAuthorizable|TestLibAddress|TestLibAddressArray|TestLibBytes|TestLibEIP712|TestLibMath|TestLibRichErrors|TestLibSafeMath|TestLogDecoding|TestLogDecodingDownstream|TestOwnable|TestReentrancyGuard|TestRefundable|TestRefundableReceiver).json"
+        "abis": "./test/generated-artifacts/@(AuthorizableV06|AuthorizableV08|IAuthorizableV06|IAuthorizableV08|IOwnable|IOwnableV06|IOwnableV08|LibAuthorizableRichErrorsV06|LibAuthorizableRichErrorsV08|LibBytes|LibBytesRichErrors|LibBytesRichErrorsV06|LibBytesRichErrorsV08|LibBytesV06|LibBytesV08|LibMathRichErrorsV06|LibMathRichErrorsV08|LibMathV06|LibMathV08|LibOwnableRichErrors|LibOwnableRichErrorsV06|LibOwnableRichErrorsV08|LibReentrancyGuardRichErrors|LibReentrancyGuardRichErrorsV06|LibReentrancyGuardRichErrorsV08|LibRichErrors|LibRichErrorsV06|LibRichErrorsV08|LibSafeMath|LibSafeMathRichErrors|LibSafeMathRichErrorsV06|LibSafeMathRichErrorsV08|LibSafeMathV06|Ownable|OwnableV06|OwnableV08|ReentrancyGuard|ReentrancyGuardV08|TestLibBytes|TestLibRichErrors|TestLibSafeMath|TestOwnable|TestReentrancyGuard).json"
     },
     "repository": {
         "type": "git",
@@ -46,7 +46,7 @@
     "devDependencies": {
         "@0x/abi-gen": "^5.8.1",
         "@0x/contracts-gen": "^2.0.48",
-        "@0x/contracts-test-utils": "^5.4.45",
+        "@0x/contracts-test-utils": "^5.4.47",
         "@0x/dev-utils": "^5.0.0",
         "@0x/order-utils": "^10.4.28",
         "@0x/sol-compiler": "^4.8.2",

contracts/utils/src/artifacts.ts

@@ -5,20 +5,9 @@
  */
 import { ContractArtifact } from 'ethereum-types';
 
-import * as Authorizable from '../generated-artifacts/Authorizable.json';
-import * as IAuthorizable from '../generated-artifacts/IAuthorizable.json';
 import * as IOwnable from '../generated-artifacts/IOwnable.json';
-import * as LibAddress from '../generated-artifacts/LibAddress.json';
-import * as LibAddressArray from '../generated-artifacts/LibAddressArray.json';
-import * as LibAddressArrayRichErrors from '../generated-artifacts/LibAddressArrayRichErrors.json';
-import * as LibAuthorizableRichErrors from '../generated-artifacts/LibAuthorizableRichErrors.json';
 import * as LibBytes from '../generated-artifacts/LibBytes.json';
 import * as LibBytesRichErrors from '../generated-artifacts/LibBytesRichErrors.json';
-import * as LibEIP1271 from '../generated-artifacts/LibEIP1271.json';
-import * as LibEIP712 from '../generated-artifacts/LibEIP712.json';
-import * as LibFractions from '../generated-artifacts/LibFractions.json';
-import * as LibMath from '../generated-artifacts/LibMath.json';
-import * as LibMathRichErrors from '../generated-artifacts/LibMathRichErrors.json';
 import * as LibOwnableRichErrors from '../generated-artifacts/LibOwnableRichErrors.json';
 import * as LibReentrancyGuardRichErrors from '../generated-artifacts/LibReentrancyGuardRichErrors.json';
 import * as LibRichErrors from '../generated-artifacts/LibRichErrors.json';
@@ -26,28 +15,15 @@ import * as LibSafeMath from '../generated-artifacts/LibSafeMath.json';
 import * as LibSafeMathRichErrors from '../generated-artifacts/LibSafeMathRichErrors.json';
 import * as Ownable from '../generated-artifacts/Ownable.json';
 import * as ReentrancyGuard from '../generated-artifacts/ReentrancyGuard.json';
-import * as Refundable from '../generated-artifacts/Refundable.json';
 export const artifacts = {
-    Authorizable: Authorizable as ContractArtifact,
-    IAuthorizable: IAuthorizable as ContractArtifact,
     IOwnable: IOwnable as ContractArtifact,
-    LibAddress: LibAddress as ContractArtifact,
-    LibAddressArray: LibAddressArray as ContractArtifact,
-    LibAddressArrayRichErrors: LibAddressArrayRichErrors as ContractArtifact,
-    LibAuthorizableRichErrors: LibAuthorizableRichErrors as ContractArtifact,
     LibBytes: LibBytes as ContractArtifact,
     LibBytesRichErrors: LibBytesRichErrors as ContractArtifact,
-    LibEIP1271: LibEIP1271 as ContractArtifact,
-    LibEIP712: LibEIP712 as ContractArtifact,
-    LibFractions: LibFractions as ContractArtifact,
     LibOwnableRichErrors: LibOwnableRichErrors as ContractArtifact,
     LibReentrancyGuardRichErrors: LibReentrancyGuardRichErrors as ContractArtifact,
     LibRichErrors: LibRichErrors as ContractArtifact,
-    LibMath: LibMath as ContractArtifact,
-    LibMathRichErrors: LibMathRichErrors as ContractArtifact,
     LibSafeMath: LibSafeMath as ContractArtifact,
     LibSafeMathRichErrors: LibSafeMathRichErrors as ContractArtifact,
     Ownable: Ownable as ContractArtifact,
     ReentrancyGuard: ReentrancyGuard as ContractArtifact,
-    Refundable: Refundable as ContractArtifact,
 };

contracts/utils/src/reference_functions.ts

@@ -52,77 +52,3 @@ export function safeDiv(a: BigNumber, b: BigNumber): BigNumber {
     }
     return a.dividedToIntegerBy(b);
 }
-
-// LibMath
-
-/**
- * Checks if rounding error >= 0.1% when rounding down.
- */
-export function isRoundingErrorFloor(numerator: BigNumber, denominator: BigNumber, target: BigNumber): boolean {
-    if (denominator.eq(0)) {
-        throw new LibMathRevertErrors.DivisionByZeroError();
-    }
-    if (numerator.eq(0) || target.eq(0)) {
-        return false;
-    }
-    const remainder = numerator.times(target).mod(denominator);
-    // Need to do this separately because solidity evaluates RHS of the comparison expression first.
-    const rhs = safeMul(numerator, target);
-    const lhs = safeMul(remainder, new BigNumber(1000));
-    return lhs.gte(rhs);
-}
-
-/**
- * Checks if rounding error >= 0.1% when rounding up.
- */
-export function isRoundingErrorCeil(numerator: BigNumber, denominator: BigNumber, target: BigNumber): boolean {
-    if (denominator.eq(0)) {
-        throw new LibMathRevertErrors.DivisionByZeroError();
-    }
-    if (numerator.eq(0) || target.eq(0)) {
-        return false;
-    }
-    let remainder = numerator.times(target).mod(denominator);
-    remainder = safeSub(denominator, remainder).mod(denominator);
-    // Need to do this separately because solidity evaluates RHS of the comparison expression first.
-    const rhs = safeMul(numerator, target);
-    const lhs = safeMul(remainder, new BigNumber(1000));
-    return lhs.gte(rhs);
-}
-
-/**
- * Calculates partial value given a numerator and denominator rounded down.
- *      Reverts if rounding error is >= 0.1%
- */
-export function safeGetPartialAmountFloor(numerator: BigNumber, denominator: BigNumber, target: BigNumber): BigNumber {
-    if (isRoundingErrorFloor(numerator, denominator, target)) {
-        throw new LibMathRevertErrors.RoundingError(numerator, denominator, target);
-    }
-    return safeDiv(safeMul(numerator, target), denominator);
-}
-
-/**
- * Calculates partial value given a numerator and denominator rounded down.
- *      Reverts if rounding error is >= 0.1%
- */
-export function safeGetPartialAmountCeil(numerator: BigNumber, denominator: BigNumber, target: BigNumber): BigNumber {
-    if (isRoundingErrorCeil(numerator, denominator, target)) {
-        throw new LibMathRevertErrors.RoundingError(numerator, denominator, target);
-    }
-    return safeDiv(safeAdd(safeMul(numerator, target), safeSub(denominator, new BigNumber(1))), denominator);
-}
-
-/**
- * Calculates partial value given a numerator and denominator rounded down.
- */
-export function getPartialAmountFloor(numerator: BigNumber, denominator: BigNumber, target: BigNumber): BigNumber {
-    return safeDiv(safeMul(numerator, target), denominator);
-}
-
-/**
- * Calculates partial value given a numerator and denominator rounded down.
- */
-export function getPartialAmountCeil(numerator: BigNumber, denominator: BigNumber, target: BigNumber): BigNumber {
-    const sub = safeSub(denominator, new BigNumber(1)); // This is computed first to simulate Solidity's order of operations
-    return safeDiv(safeAdd(safeMul(numerator, target), sub), denominator);
-}

contracts/utils/src/wrappers.ts

@@ -3,20 +3,9 @@
  * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
  * -----------------------------------------------------------------------------
  */
-export * from '../generated-wrappers/authorizable';
-export * from '../generated-wrappers/i_authorizable';
 export * from '../generated-wrappers/i_ownable';
-export * from '../generated-wrappers/lib_address';
-export * from '../generated-wrappers/lib_address_array';
-export * from '../generated-wrappers/lib_address_array_rich_errors';
-export * from '../generated-wrappers/lib_authorizable_rich_errors';
 export * from '../generated-wrappers/lib_bytes';
 export * from '../generated-wrappers/lib_bytes_rich_errors';
-export * from '../generated-wrappers/lib_e_i_p1271';
-export * from '../generated-wrappers/lib_e_i_p712';
-export * from '../generated-wrappers/lib_fractions';
-export * from '../generated-wrappers/lib_math';
-export * from '../generated-wrappers/lib_math_rich_errors';
 export * from '../generated-wrappers/lib_ownable_rich_errors';
 export * from '../generated-wrappers/lib_reentrancy_guard_rich_errors';
 export * from '../generated-wrappers/lib_rich_errors';
@@ -24,4 +13,3 @@ export * from '../generated-wrappers/lib_safe_math';
 export * from '../generated-wrappers/lib_safe_math_rich_errors';
 export * from '../generated-wrappers/ownable';
 export * from '../generated-wrappers/reentrancy_guard';
-export * from '../generated-wrappers/refundable';

contracts/utils/test/artifacts.ts

@@ -5,21 +5,13 @@
  */
 import { ContractArtifact } from 'ethereum-types';
 
-import * as Authorizable from '../test/generated-artifacts/Authorizable.json';
 import * as AuthorizableV06 from '../test/generated-artifacts/AuthorizableV06.json';
 import * as AuthorizableV08 from '../test/generated-artifacts/AuthorizableV08.json';
-import * as D18 from '../test/generated-artifacts/D18.json';
-import * as DeploymentConstants from '../test/generated-artifacts/DeploymentConstants.json';
-import * as IAuthorizable from '../test/generated-artifacts/IAuthorizable.json';
 import * as IAuthorizableV06 from '../test/generated-artifacts/IAuthorizableV06.json';
 import * as IAuthorizableV08 from '../test/generated-artifacts/IAuthorizableV08.json';
 import * as IOwnable from '../test/generated-artifacts/IOwnable.json';
 import * as IOwnableV06 from '../test/generated-artifacts/IOwnableV06.json';
 import * as IOwnableV08 from '../test/generated-artifacts/IOwnableV08.json';
-import * as LibAddress from '../test/generated-artifacts/LibAddress.json';
-import * as LibAddressArray from '../test/generated-artifacts/LibAddressArray.json';
-import * as LibAddressArrayRichErrors from '../test/generated-artifacts/LibAddressArrayRichErrors.json';
-import * as LibAuthorizableRichErrors from '../test/generated-artifacts/LibAuthorizableRichErrors.json';
 import * as LibAuthorizableRichErrorsV06 from '../test/generated-artifacts/LibAuthorizableRichErrorsV06.json';
 import * as LibAuthorizableRichErrorsV08 from '../test/generated-artifacts/LibAuthorizableRichErrorsV08.json';
 import * as LibBytes from '../test/generated-artifacts/LibBytes.json';
@@ -28,11 +20,6 @@ import * as LibBytesRichErrorsV06 from '../test/generated-artifacts/LibBytesRich
 import * as LibBytesRichErrorsV08 from '../test/generated-artifacts/LibBytesRichErrorsV08.json';
 import * as LibBytesV06 from '../test/generated-artifacts/LibBytesV06.json';
 import * as LibBytesV08 from '../test/generated-artifacts/LibBytesV08.json';
-import * as LibEIP1271 from '../test/generated-artifacts/LibEIP1271.json';
-import * as LibEIP712 from '../test/generated-artifacts/LibEIP712.json';
-import * as LibFractions from '../test/generated-artifacts/LibFractions.json';
-import * as LibMath from '../test/generated-artifacts/LibMath.json';
-import * as LibMathRichErrors from '../test/generated-artifacts/LibMathRichErrors.json';
 import * as LibMathRichErrorsV06 from '../test/generated-artifacts/LibMathRichErrorsV06.json';
 import * as LibMathRichErrorsV08 from '../test/generated-artifacts/LibMathRichErrorsV08.json';
 import * as LibMathV06 from '../test/generated-artifacts/LibMathV06.json';
@@ -55,38 +42,15 @@ import * as Ownable from '../test/generated-artifacts/Ownable.json';
 import * as OwnableV06 from '../test/generated-artifacts/OwnableV06.json';
 import * as OwnableV08 from '../test/generated-artifacts/OwnableV08.json';
 import * as ReentrancyGuard from '../test/generated-artifacts/ReentrancyGuard.json';
-import * as ReentrancyGuardV06 from '../test/generated-artifacts/ReentrancyGuardV06.json';
 import * as ReentrancyGuardV08 from '../test/generated-artifacts/ReentrancyGuardV08.json';
-import * as Refundable from '../test/generated-artifacts/Refundable.json';
-import * as TestAuthorizable from '../test/generated-artifacts/TestAuthorizable.json';
-import * as TestLibAddress from '../test/generated-artifacts/TestLibAddress.json';
-import * as TestLibAddressArray from '../test/generated-artifacts/TestLibAddressArray.json';
 import * as TestLibBytes from '../test/generated-artifacts/TestLibBytes.json';
-import * as TestLibEIP712 from '../test/generated-artifacts/TestLibEIP712.json';
-import * as TestLibMath from '../test/generated-artifacts/TestLibMath.json';
 import * as TestLibRichErrors from '../test/generated-artifacts/TestLibRichErrors.json';
 import * as TestLibSafeMath from '../test/generated-artifacts/TestLibSafeMath.json';
-import * as TestLogDecoding from '../test/generated-artifacts/TestLogDecoding.json';
-import * as TestLogDecodingDownstream from '../test/generated-artifacts/TestLogDecodingDownstream.json';
 import * as TestOwnable from '../test/generated-artifacts/TestOwnable.json';
 import * as TestReentrancyGuard from '../test/generated-artifacts/TestReentrancyGuard.json';
-import * as TestRefundable from '../test/generated-artifacts/TestRefundable.json';
-import * as TestRefundableReceiver from '../test/generated-artifacts/TestRefundableReceiver.json';
 export const artifacts = {
-    Authorizable: Authorizable as ContractArtifact,
-    D18: D18 as ContractArtifact,
-    DeploymentConstants: DeploymentConstants as ContractArtifact,
-    LibAddress: LibAddress as ContractArtifact,
-    LibAddressArray: LibAddressArray as ContractArtifact,
-    LibAddressArrayRichErrors: LibAddressArrayRichErrors as ContractArtifact,
-    LibAuthorizableRichErrors: LibAuthorizableRichErrors as ContractArtifact,
     LibBytes: LibBytes as ContractArtifact,
     LibBytesRichErrors: LibBytesRichErrors as ContractArtifact,
-    LibEIP1271: LibEIP1271 as ContractArtifact,
-    LibEIP712: LibEIP712 as ContractArtifact,
-    LibFractions: LibFractions as ContractArtifact,
-    LibMath: LibMath as ContractArtifact,
-    LibMathRichErrors: LibMathRichErrors as ContractArtifact,
     LibOwnableRichErrors: LibOwnableRichErrors as ContractArtifact,
     LibReentrancyGuardRichErrors: LibReentrancyGuardRichErrors as ContractArtifact,
     LibRichErrors: LibRichErrors as ContractArtifact,
@@ -94,15 +58,12 @@ export const artifacts = {
     LibSafeMathRichErrors: LibSafeMathRichErrors as ContractArtifact,
     Ownable: Ownable as ContractArtifact,
     ReentrancyGuard: ReentrancyGuard as ContractArtifact,
-    Refundable: Refundable as ContractArtifact,
-    IAuthorizable: IAuthorizable as ContractArtifact,
     IOwnable: IOwnable as ContractArtifact,
     AuthorizableV06: AuthorizableV06 as ContractArtifact,
     LibBytesV06: LibBytesV06 as ContractArtifact,
     LibMathV06: LibMathV06 as ContractArtifact,
     LibSafeMathV06: LibSafeMathV06 as ContractArtifact,
     OwnableV06: OwnableV06 as ContractArtifact,
-    ReentrancyGuardV06: ReentrancyGuardV06 as ContractArtifact,
     LibAuthorizableRichErrorsV06: LibAuthorizableRichErrorsV06 as ContractArtifact,
     LibBytesRichErrorsV06: LibBytesRichErrorsV06 as ContractArtifact,
     LibMathRichErrorsV06: LibMathRichErrorsV06 as ContractArtifact,
@@ -126,18 +87,9 @@ export const artifacts = {
     LibSafeMathRichErrorsV08: LibSafeMathRichErrorsV08 as ContractArtifact,
     IAuthorizableV08: IAuthorizableV08 as ContractArtifact,
     IOwnableV08: IOwnableV08 as ContractArtifact,
-    TestAuthorizable: TestAuthorizable as ContractArtifact,
-    TestLibAddress: TestLibAddress as ContractArtifact,
-    TestLibAddressArray: TestLibAddressArray as ContractArtifact,
     TestLibBytes: TestLibBytes as ContractArtifact,
-    TestLibEIP712: TestLibEIP712 as ContractArtifact,
-    TestLibMath: TestLibMath as ContractArtifact,
     TestLibRichErrors: TestLibRichErrors as ContractArtifact,
     TestLibSafeMath: TestLibSafeMath as ContractArtifact,
-    TestLogDecoding: TestLogDecoding as ContractArtifact,
-    TestLogDecodingDownstream: TestLogDecodingDownstream as ContractArtifact,
     TestOwnable: TestOwnable as ContractArtifact,
     TestReentrancyGuard: TestReentrancyGuard as ContractArtifact,
-    TestRefundable: TestRefundable as ContractArtifact,
-    TestRefundableReceiver: TestRefundableReceiver as ContractArtifact,
 };

contracts/utils/test/authorizable.ts

@@ -1,165 +0,0 @@
-import { blockchainTests, constants, expect } from '@0x/contracts-test-utils';
-import { AuthorizableRevertErrors, BigNumber, OwnableRevertErrors } from '@0x/utils';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-import { TestAuthorizableContract } from './wrappers';
-
-blockchainTests.resets('Authorizable', env => {
-    let owner: string;
-    let notOwner: string;
-    let address: string;
-    let authorizable: TestAuthorizableContract;
-
-    before(async () => {
-        const accounts = await env.getAccountAddressesAsync();
-        [owner, address, notOwner] = _.slice(accounts, 0, 3);
-        authorizable = await TestAuthorizableContract.deployFrom0xArtifactAsync(
-            artifacts.TestAuthorizable,
-            env.provider,
-            env.txDefaults,
-            artifacts,
-        );
-    });
-
-    describe('addAuthorizedAddress', () => {
-        it('should revert if not called by owner', async () => {
-            const expectedError = new OwnableRevertErrors.OnlyOwnerError(notOwner, owner);
-            const tx = authorizable.addAuthorizedAddress(notOwner).sendTransactionAsync({ from: notOwner });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should allow owner to add an authorized address', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const isAuthorized = await authorizable.authorized(address).callAsync();
-            expect(isAuthorized).to.be.true();
-        });
-
-        it('should revert if owner attempts to authorize the zero address', async () => {
-            const expectedError = new AuthorizableRevertErrors.ZeroCantBeAuthorizedError();
-            const tx = authorizable.addAuthorizedAddress(constants.NULL_ADDRESS).sendTransactionAsync({ from: owner });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should revert if owner attempts to authorize a duplicate address', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const expectedError = new AuthorizableRevertErrors.TargetAlreadyAuthorizedError(address);
-            const tx = authorizable.addAuthorizedAddress(address).sendTransactionAsync({ from: owner });
-            return expect(tx).to.revertWith(expectedError);
-        });
-    });
-
-    describe('onlyAuthorized', () => {
-        before(async () => {
-            await authorizable.addAuthorizedAddress(owner).awaitTransactionSuccessAsync({ from: owner });
-        });
-
-        after(async () => {
-            await authorizable.removeAuthorizedAddress(owner).awaitTransactionSuccessAsync({ from: owner });
-        });
-
-        it('should revert if sender is not authorized', async () => {
-            const tx = authorizable.onlyAuthorizedFn().callAsync({ from: notOwner });
-            const expectedError = new AuthorizableRevertErrors.SenderNotAuthorizedError(notOwner);
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should succeed if sender is authorized', async () => {
-            await authorizable.onlyAuthorizedFn().callAsync({ from: owner });
-        });
-    });
-
-    describe('removeAuthorizedAddress', () => {
-        it('should revert if not called by owner', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const expectedError = new OwnableRevertErrors.OnlyOwnerError(notOwner, owner);
-            const tx = authorizable.removeAuthorizedAddress(address).sendTransactionAsync({ from: notOwner });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should allow owner to remove an authorized address', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            await authorizable.removeAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const isAuthorized = await authorizable.authorized(address).callAsync();
-            expect(isAuthorized).to.be.false();
-        });
-
-        it('should revert if owner attempts to remove an address that is not authorized', async () => {
-            const expectedError = new AuthorizableRevertErrors.TargetNotAuthorizedError(address);
-            const tx = authorizable.removeAuthorizedAddress(address).sendTransactionAsync({ from: owner });
-            return expect(tx).to.revertWith(expectedError);
-        });
-    });
-
-    describe('removeAuthorizedAddressAtIndex', () => {
-        it('should revert if not called by owner', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const index = new BigNumber(0);
-            const expectedError = new OwnableRevertErrors.OnlyOwnerError(notOwner, owner);
-            const tx = authorizable.removeAuthorizedAddressAtIndex(address, index).sendTransactionAsync({
-                from: notOwner,
-            });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should revert if index is >= authorities.length', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const index = new BigNumber(1);
-            const expectedError = new AuthorizableRevertErrors.IndexOutOfBoundsError(index, index);
-            const tx = authorizable.removeAuthorizedAddressAtIndex(address, index).sendTransactionAsync({
-                from: owner,
-            });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should revert if owner attempts to remove an address that is not authorized', async () => {
-            const index = new BigNumber(0);
-            const expectedError = new AuthorizableRevertErrors.TargetNotAuthorizedError(address);
-            const tx = authorizable.removeAuthorizedAddressAtIndex(address, index).sendTransactionAsync({
-                from: owner,
-            });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should revert if address at index does not match target', async () => {
-            const address1 = address;
-            const address2 = notOwner;
-            await authorizable.addAuthorizedAddress(address1).awaitTransactionSuccessAsync({ from: owner });
-            await authorizable.addAuthorizedAddress(address2).awaitTransactionSuccessAsync({ from: owner });
-            const address1Index = new BigNumber(0);
-            const expectedError = new AuthorizableRevertErrors.AuthorizedAddressMismatchError(address1, address2);
-            const tx = authorizable.removeAuthorizedAddressAtIndex(address2, address1Index).sendTransactionAsync({
-                from: owner,
-            });
-            return expect(tx).to.revertWith(expectedError);
-        });
-
-        it('should allow owner to remove an authorized address', async () => {
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            const index = new BigNumber(0);
-            await authorizable.removeAuthorizedAddressAtIndex(address, index).awaitTransactionSuccessAsync({
-                from: owner,
-            });
-            const isAuthorized = await authorizable.authorized(address).callAsync();
-            expect(isAuthorized).to.be.false();
-        });
-    });
-
-    describe('getAuthorizedAddresses', () => {
-        it('should return correct authorized addresses', async () => {
-            // Initial Authorities
-            let authorities = await authorizable.getAuthorizedAddresses().callAsync();
-            expect(authorities).to.be.deep.eq([]);
-
-            // Authorities after addition
-            await authorizable.addAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            authorities = await authorizable.getAuthorizedAddresses().callAsync();
-            expect(authorities).to.be.deep.eq([address]);
-
-            // Authorities after removal
-            await authorizable.removeAuthorizedAddress(address).awaitTransactionSuccessAsync({ from: owner });
-            authorities = await authorizable.getAuthorizedAddresses().callAsync();
-            expect(authorities).to.be.deep.eq([]);
-        });
-    });
-});

contracts/utils/test/lib_address.ts

@@ -1,43 +0,0 @@
-import { chaiSetup, provider, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import * as chai from 'chai';
-
-import { artifacts } from './artifacts';
-import { TestLibAddressContract } from './wrappers';
-
-chaiSetup.configure();
-const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('LibAddress', () => {
-    let lib: TestLibAddressContract;
-    let nonContract: string;
-
-    before(async () => {
-        await blockchainLifecycle.startAsync();
-        nonContract = (await web3Wrapper.getAvailableAddressesAsync())[0];
-        // Deploy LibAddress
-        lib = await TestLibAddressContract.deployFrom0xArtifactAsync(
-            artifacts.TestLibAddress,
-            provider,
-            txDefaults,
-            {},
-        );
-    });
-
-    after(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-
-    describe('isContract', () => {
-        it('should return false for a non-contract address', async () => {
-            const isContract = await lib.externalIsContract(nonContract).callAsync();
-            expect(isContract).to.be.false();
-        });
-
-        it('should return true for a non-contract address', async () => {
-            const isContract = await lib.externalIsContract(lib.address).callAsync();
-            expect(isContract).to.be.true();
-        });
-    });
-});

contracts/utils/test/lib_address_array.ts

@@ -1,144 +0,0 @@
-import { chaiSetup, provider, randomAddress, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import { BigNumber, LibAddressArrayRevertErrors } from '@0x/utils';
-import * as chai from 'chai';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-import { TestLibAddressArrayContract } from './wrappers';
-
-chaiSetup.configure();
-const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('LibAddressArray', () => {
-    let lib: TestLibAddressArrayContract;
-
-    before(async () => {
-        await blockchainLifecycle.startAsync();
-        // Deploy LibAddressArray
-        lib = await TestLibAddressArrayContract.deployFrom0xArtifactAsync(
-            artifacts.TestLibAddressArray,
-            provider,
-            txDefaults,
-            artifacts,
-        );
-    });
-    after(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-
-    describe('append', () => {
-        it('should append to empty array', async () => {
-            const addr = randomAddress();
-            const result = await lib.publicAppend([], addr).callAsync();
-            const expected = [addr];
-            expect(result).to.deep.equal(expected);
-        });
-
-        it('should append to non-empty array', async () => {
-            const arr = _.times(3, () => randomAddress());
-            const addr = randomAddress();
-            const expected = [...arr, addr];
-            const result = await lib.publicAppend(arr, addr).callAsync();
-            expect(result).to.deep.equal(expected);
-        });
-
-        it('should revert if the free memory pointer was moved to before the end of the array', async () => {
-            const arr = _.times(3, () => randomAddress());
-            const addr = randomAddress();
-            const freeMemOffset = new BigNumber(-1);
-            const addressArrayEndPtr = new BigNumber(256);
-            const expectedError = new LibAddressArrayRevertErrors.MismanagedMemoryError(
-                addressArrayEndPtr.plus(freeMemOffset),
-                addressArrayEndPtr,
-            );
-            return expect(lib.testAppendRealloc(arr, freeMemOffset, addr).callAsync()).to.revertWith(expectedError);
-        });
-
-        it('should keep the same memory address if free memory pointer does not move', async () => {
-            const arr = _.times(3, () => randomAddress());
-            const addr = randomAddress();
-            const freeMemOffset = new BigNumber(0);
-            const expected = [...arr, addr];
-            const [result, oldArrayMemStart, newArrayMemStart] = await lib
-                .testAppendRealloc(arr, freeMemOffset, addr)
-                .callAsync();
-            expect(result).to.deep.equal(expected);
-            expect(newArrayMemStart).bignumber.to.be.equal(oldArrayMemStart);
-        });
-
-        it('should change memory address if free memory pointer advances', async () => {
-            const arr = _.times(3, () => randomAddress());
-            const addr = randomAddress();
-            const freeMemOffset = new BigNumber(1);
-            const expectedArray = [...arr, addr];
-            const [result, oldArrayMemStart, newArrayMemStart] = await lib
-                .testAppendRealloc(arr, freeMemOffset, addr)
-                .callAsync();
-            // The new location should be the end of the old array + freeMemOffset.
-            const expectedNewArrayMemStart = oldArrayMemStart.plus((arr.length + 1) * 32).plus(freeMemOffset);
-            expect(result).to.deep.equal(expectedArray);
-            expect(newArrayMemStart).bignumber.to.be.equal(expectedNewArrayMemStart);
-        });
-    });
-
-    describe('contains', () => {
-        it('should return false on an empty array', async () => {
-            const addr = randomAddress();
-            const isFound = await lib.publicContains([], addr).callAsync();
-            expect(isFound).to.equal(false);
-        });
-
-        it('should return false on a missing item', async () => {
-            const arr = _.times(3, () => randomAddress());
-            const addr = randomAddress();
-            const isFound = await lib.publicContains(arr, addr).callAsync();
-            expect(isFound).to.equal(false);
-        });
-
-        it('should return true on an included item', async () => {
-            const arr = _.times(4, () => randomAddress());
-            const addr = _.sample(arr) as string;
-            const isFound = await lib.publicContains(arr, addr).callAsync();
-            expect(isFound).to.equal(true);
-        });
-
-        it('should return true on the only item in the array', async () => {
-            const arr = _.times(1, () => randomAddress());
-            const isFound = await lib.publicContains(arr, arr[0]).callAsync();
-            expect(isFound).to.equal(true);
-        });
-    });
-
-    describe('indexOf', () => {
-        it('should fail on an empty array', async () => {
-            const addr = randomAddress();
-            const [isSuccess] = await lib.publicIndexOf([], addr).callAsync();
-            expect(isSuccess).to.equal(false);
-        });
-
-        it('should fail on a missing item', async () => {
-            const arr = _.times(3, () => randomAddress());
-            const addr = randomAddress();
-            const [isSuccess] = await lib.publicIndexOf(arr, addr).callAsync();
-            expect(isSuccess).to.equal(false);
-        });
-
-        it('should succeed on an included item', async () => {
-            const arr = _.times(4, () => randomAddress());
-            const expectedIndexOf = _.random(0, arr.length - 1);
-            const addr = arr[expectedIndexOf];
-            const [isSuccess, index] = await lib.publicIndexOf(arr, addr).callAsync();
-            expect(isSuccess).to.equal(true);
-            expect(index).bignumber.to.equal(expectedIndexOf);
-        });
-
-        it('should succeed on the only item in the array', async () => {
-            const arr = _.times(1, () => randomAddress());
-            const [isSuccess, index] = await lib.publicIndexOf(arr, arr[0]).callAsync();
-            expect(isSuccess).to.equal(true);
-            expect(index).bignumber.to.equal(0);
-        });
-    });
-});

contracts/utils/test/lib_eip712.ts

@@ -1,108 +0,0 @@
-import { chaiSetup, constants, provider, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import { BigNumber, hexUtils, signTypedDataUtils } from '@0x/utils';
-import * as chai from 'chai';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-import { TestLibEIP712Contract } from './wrappers';
-
-chaiSetup.configure();
-const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('LibEIP712', () => {
-    let lib: TestLibEIP712Contract;
-
-    before(async () => {
-        await blockchainLifecycle.startAsync();
-        // Deploy LibEIP712
-        lib = await TestLibEIP712Contract.deployFrom0xArtifactAsync(artifacts.TestLibEIP712, provider, txDefaults, {});
-    });
-
-    after(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-
-    /**
-     * Tests a specific instance of EIP712 domain hashing.
-     * @param lib The LibEIP712 contract to call.
-     * @param name The name of the domain.
-     * @param version The version of the domain.
-     * @param chainId The chain id of the domain.
-     * @param verifyingContract The verifying contract address of the domain.
-     */
-    async function testHashEIP712DomainAsync(
-        name: string,
-        version: string,
-        chainId: number,
-        verifyingContract: string,
-    ): Promise<void> {
-        const expectedHash = signTypedDataUtils.generateDomainHash({
-            name,
-            version,
-            chainId,
-            verifyingContract,
-        });
-        const actualHash = await lib
-            .externalHashEIP712DomainSeperator(name, version, new BigNumber(chainId), verifyingContract)
-            .callAsync();
-        expect(actualHash).to.be.eq(hexUtils.concat(expectedHash));
-    }
-
-    describe('_hashEIP712Domain', async () => {
-        it('should correctly hash empty input', async () => {
-            await testHashEIP712DomainAsync('', '', 0, constants.NULL_ADDRESS);
-        });
-
-        it('should correctly hash non-empty input', async () => {
-            await testHashEIP712DomainAsync('_hashEIP712Domain', '1.0', 62, lib.address);
-        });
-
-        it('should correctly hash non-empty input', async () => {
-            await testHashEIP712DomainAsync('_hashEIP712Domain', '2.0', 0, lib.address);
-        });
-    });
-
-    /**
-     * Tests a specific instance of EIP712 message hashing.
-     * @param lib The LibEIP712 contract to call.
-     * @param domainHash The hash of the EIP712 domain of this instance.
-     * @param hashStruct The hash of the struct of this instance.
-     */
-    async function testHashEIP712MessageAsync(domainHash: string, hashStruct: string): Promise<void> {
-        // Remove the hex prefix from the domain hash and the hash struct
-        const unprefixedDomainHash = domainHash.slice(2, domainHash.length);
-        const unprefixedHashStruct = hashStruct.slice(2, hashStruct.length);
-
-        // Hash the provided input to get the expected hash
-        const input = '0x1901'.concat(unprefixedDomainHash.concat(unprefixedHashStruct));
-        const expectedHash = hexUtils.hash(input);
-
-        // Get the actual hash by calling the smart contract
-        const actualHash = await lib.externalHashEIP712Message(domainHash, hashStruct).callAsync();
-
-        // Verify that the actual hash matches the expected hash
-        expect(actualHash).to.be.eq(expectedHash);
-    }
-
-    describe('_hashEIP712Message', () => {
-        it('should correctly hash empty input', async () => {
-            await testHashEIP712MessageAsync(constants.NULL_BYTES32, constants.NULL_BYTES32);
-        });
-
-        it('should correctly hash non-empty input', async () => {
-            await testHashEIP712MessageAsync(
-                '0xb10e2d527612073b26eecdfd717e6a320cf44b4afac2b0732d9fcbe2b7fa0cf6', // keccak256(abi.encode(1))
-                '0x405787fa12a823e0f2b7631cc41b3ba8828b3321ca811111fa75cd3aa3bb5ace', // keccak256(abi.encode(2))
-            );
-        });
-
-        it('should correctly hash non-empty input', async () => {
-            await testHashEIP712MessageAsync(
-                '0x405787fa12a823e0f2b7631cc41b3ba8828b3321ca811111fa75cd3aa3bb5ace', // keccak256(abi.encode(2))
-                '0xc2575a0e9e593c00f959f8c92f12db2869c3395a3b0502d05e2516446f71f85b', // keccak256(abi.encode(3))
-            );
-        });
-    });
-});

contracts/utils/test/lib_math.ts

@@ -1,421 +0,0 @@
-import {
-    blockchainTests,
-    constants,
-    describe,
-    expect,
-    testCombinatoriallyWithReferenceFunc,
-    uint256Values,
-} from '@0x/contracts-test-utils';
-import { BigNumber, LibMathRevertErrors, SafeMathRevertErrors } from '@0x/utils';
-
-import {
-    getPartialAmountCeil,
-    getPartialAmountFloor,
-    isRoundingErrorCeil,
-    isRoundingErrorFloor,
-    safeGetPartialAmountCeil,
-    safeGetPartialAmountFloor,
-} from '../src/reference_functions';
-
-import { artifacts } from './artifacts';
-import { TestLibMathContract } from './wrappers';
-
-blockchainTests('LibMath', env => {
-    const { ONE_ETHER, MAX_UINT256, MAX_UINT256_ROOT, ZERO_AMOUNT } = constants;
-    let libsContract: TestLibMathContract;
-
-    before(async () => {
-        libsContract = await TestLibMathContract.deployFrom0xArtifactAsync(
-            artifacts.TestLibMath,
-            env.provider,
-            env.txDefaults,
-            {},
-        );
-    });
-
-    // Wrap a reference function with identical arguments in a promise.
-    function createAsyncReferenceFunction<T>(ref: (...args: any[]) => T): (...args: any[]) => Promise<T> {
-        return async (...args: any[]): Promise<T> => {
-            return ref(...args);
-        };
-    }
-
-    function createContractTestFunction<T>(name: string): (...args: any[]) => Promise<T> {
-        return async (...args: any[]): Promise<T> => {
-            return (libsContract as any)[name](...args).callAsync;
-        };
-    }
-
-    describe('getPartialAmountFloor', () => {
-        describe.optional('combinatorial tests', () => {
-            testCombinatoriallyWithReferenceFunc(
-                'getPartialAmountFloor',
-                createAsyncReferenceFunction(getPartialAmountFloor),
-                createContractTestFunction('getPartialAmountFloor'),
-                [uint256Values, uint256Values, uint256Values],
-            );
-        });
-
-        describe('explicit tests', () => {
-            it('matches the reference function output', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = ONE_ETHER.times(0.01);
-                const expected = getPartialAmountFloor(numerator, denominator, target);
-                const actual = await libsContract.getPartialAmountFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('rounds down when computing the partial amount', async () => {
-                const numerator = ONE_ETHER.times(0.6);
-                const denominator = ONE_ETHER.times(1.8);
-                const target = ONE_ETHER;
-                const expected = ONE_ETHER.dividedToIntegerBy(3);
-                const actual = await libsContract.getPartialAmountFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('reverts if `denominator` is zero', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ZERO_AMOUNT;
-                const target = ONE_ETHER.times(0.01);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.DivisionByZero,
-                    numerator.times(target),
-                    denominator,
-                );
-                return expect(
-                    libsContract.getPartialAmountFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `numerator * target` overflows', async () => {
-                const numerator = MAX_UINT256;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = MAX_UINT256_ROOT.times(2);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.MultiplicationOverflow,
-                    numerator,
-                    target,
-                );
-                return expect(
-                    libsContract.getPartialAmountFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-        });
-    });
-
-    describe('getPartialAmountCeil', () => {
-        describe.optional('combinatorial tests', () => {
-            testCombinatoriallyWithReferenceFunc(
-                'getPartialAmountCeil',
-                createAsyncReferenceFunction(getPartialAmountCeil),
-                createContractTestFunction('getPartialAmountCeil'),
-                [uint256Values, uint256Values, uint256Values],
-            );
-        });
-
-        describe('explicit tests', () => {
-            it('matches the reference function output', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = ONE_ETHER.times(0.01);
-                const expected = getPartialAmountCeil(numerator, denominator, target);
-                const actual = await libsContract.getPartialAmountCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('rounds up when computing the partial amount', async () => {
-                const numerator = ONE_ETHER.times(0.6);
-                const denominator = ONE_ETHER.times(1.8);
-                const target = ONE_ETHER;
-                const expected = ONE_ETHER.dividedToIntegerBy(3).plus(1);
-                const actual = await libsContract.getPartialAmountCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('reverts if `denominator` is zero', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ZERO_AMOUNT;
-                const target = ONE_ETHER.times(0.01);
-                // This will actually manifest as a subtraction underflow.
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.SubtractionUnderflow,
-                    denominator,
-                    new BigNumber(1),
-                );
-                return expect(
-                    libsContract.getPartialAmountCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `numerator * target` overflows', async () => {
-                const numerator = MAX_UINT256;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = MAX_UINT256_ROOT.times(2);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.MultiplicationOverflow,
-                    numerator,
-                    target,
-                );
-                return expect(
-                    libsContract.getPartialAmountCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-        });
-    });
-
-    describe('safeGetPartialAmountFloor', () => {
-        describe.optional('combinatorial tests', () => {
-            testCombinatoriallyWithReferenceFunc(
-                'safeGetPartialAmountFloor',
-                createAsyncReferenceFunction(safeGetPartialAmountFloor),
-                createContractTestFunction('safeGetPartialAmountFloor'),
-                [uint256Values, uint256Values, uint256Values],
-            );
-        });
-
-        describe('explicit tests', () => {
-            it('matches the reference function output', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = ONE_ETHER.times(0.01);
-                const expected = safeGetPartialAmountFloor(numerator, denominator, target);
-                const actual = await libsContract.safeGetPartialAmountFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('rounds down when computing the partial amount', async () => {
-                const numerator = ONE_ETHER.times(0.6);
-                const denominator = ONE_ETHER.times(1.8);
-                const target = ONE_ETHER;
-                const expected = ONE_ETHER.dividedToIntegerBy(3);
-                const actual = await libsContract.safeGetPartialAmountFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('reverts for a rounding error', async () => {
-                const numerator = new BigNumber(1e3);
-                const denominator = new BigNumber(1e4);
-                const target = new BigNumber(333);
-                const expectedError = new LibMathRevertErrors.RoundingError(numerator, denominator, target);
-                return expect(
-                    libsContract.safeGetPartialAmountFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `denominator` is zero', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ZERO_AMOUNT;
-                const target = ONE_ETHER.times(0.01);
-                const expectedError = new LibMathRevertErrors.DivisionByZeroError();
-                return expect(
-                    libsContract.safeGetPartialAmountFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `numerator * target` overflows', async () => {
-                const numerator = MAX_UINT256;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = MAX_UINT256_ROOT.times(2);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.MultiplicationOverflow,
-                    numerator,
-                    target,
-                );
-                return expect(
-                    libsContract.safeGetPartialAmountFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-        });
-    });
-
-    describe('safeGetPartialAmountCeil', () => {
-        describe.optional('combinatorial tests', () => {
-            testCombinatoriallyWithReferenceFunc(
-                'safeGetPartialAmountCeil',
-                createAsyncReferenceFunction(safeGetPartialAmountCeil),
-                createContractTestFunction('safeGetPartialAmountCeil'),
-                [uint256Values, uint256Values, uint256Values],
-            );
-        });
-
-        describe('explicit tests', () => {
-            it('matches the reference function output', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = ONE_ETHER.times(0.01);
-                const expected = safeGetPartialAmountCeil(numerator, denominator, target);
-                const actual = await libsContract.safeGetPartialAmountCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('rounds up when computing the partial amount', async () => {
-                const numerator = ONE_ETHER.times(0.6);
-                const denominator = ONE_ETHER.times(1.8);
-                const target = ONE_ETHER;
-                const expected = ONE_ETHER.dividedToIntegerBy(3).plus(1);
-                const actual = await libsContract.safeGetPartialAmountCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.bignumber.eq(expected);
-            });
-
-            it('reverts for a rounding error', async () => {
-                const numerator = new BigNumber(1e3);
-                const denominator = new BigNumber(1e4);
-                const target = new BigNumber(333);
-                const expectedError = new LibMathRevertErrors.RoundingError(numerator, denominator, target);
-                return expect(
-                    libsContract.safeGetPartialAmountCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `denominator` is zero', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ZERO_AMOUNT;
-                const target = ONE_ETHER.times(0.01);
-                const expectedError = new LibMathRevertErrors.DivisionByZeroError();
-                return expect(
-                    libsContract.safeGetPartialAmountCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `numerator * target` overflows', async () => {
-                const numerator = MAX_UINT256;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = MAX_UINT256_ROOT.times(2);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.MultiplicationOverflow,
-                    numerator,
-                    target,
-                );
-                return expect(
-                    libsContract.safeGetPartialAmountCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-        });
-    });
-
-    describe('isRoundingErrorFloor', () => {
-        describe.optional('combinatorial tests', () => {
-            testCombinatoriallyWithReferenceFunc(
-                'isRoundingErrorFloor',
-                createAsyncReferenceFunction(isRoundingErrorFloor),
-                createContractTestFunction('isRoundingErrorFloor'),
-                [uint256Values, uint256Values, uint256Values],
-            );
-        });
-
-        describe('explicit tests', () => {
-            it('returns true when `numerator * target / denominator` produces an error >= 0.1%', async () => {
-                const numerator = new BigNumber(100);
-                const denominator = new BigNumber(102);
-                const target = new BigNumber(52);
-                const actual = await libsContract.isRoundingErrorFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.eq(true);
-            });
-
-            it('returns false when `numerator * target / denominator` produces an error < 0.1%', async () => {
-                const numerator = new BigNumber(100);
-                const denominator = new BigNumber(101);
-                const target = new BigNumber(92);
-                const actual = await libsContract.isRoundingErrorFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.eq(false);
-            });
-
-            it('matches the reference function output', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = ONE_ETHER.times(0.01);
-                const expected = isRoundingErrorFloor(numerator, denominator, target);
-                const actual = await libsContract.isRoundingErrorFloor(numerator, denominator, target).callAsync();
-                expect(actual).to.eq(expected);
-            });
-
-            it('reverts if `denominator` is zero', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ZERO_AMOUNT;
-                const target = ONE_ETHER.times(0.01);
-                const expectedError = new LibMathRevertErrors.DivisionByZeroError();
-                return expect(
-                    libsContract.isRoundingErrorFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `numerator * target` overflows', async () => {
-                const numerator = MAX_UINT256;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = MAX_UINT256_ROOT.times(2);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.MultiplicationOverflow,
-                    numerator,
-                    target,
-                );
-                return expect(
-                    libsContract.isRoundingErrorFloor(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-        });
-    });
-
-    describe('isRoundingErrorCeil', () => {
-        describe.optional('combinatorial tests', () => {
-            testCombinatoriallyWithReferenceFunc(
-                'isRoundingErrorCeil',
-                createAsyncReferenceFunction(isRoundingErrorCeil),
-                createContractTestFunction('isRoundingErrorCeil'),
-                [uint256Values, uint256Values, uint256Values],
-            );
-        });
-
-        describe('explicit tests', () => {
-            it('returns true when `numerator * target / (denominator - 1)` produces an error >= 0.1%', async () => {
-                const numerator = new BigNumber(100);
-                const denominator = new BigNumber(101);
-                const target = new BigNumber(92);
-                const actual = await libsContract.isRoundingErrorCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.eq(true);
-            });
-
-            it('returns false when `numerator * target / (denominator - 1)` produces an error < 0.1%', async () => {
-                const numerator = new BigNumber(100);
-                const denominator = new BigNumber(102);
-                const target = new BigNumber(52);
-                const actual = await libsContract.isRoundingErrorCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.eq(false);
-            });
-
-            it('matches the reference function output', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = ONE_ETHER.times(0.01);
-                const expected = isRoundingErrorCeil(numerator, denominator, target);
-                const actual = await libsContract.isRoundingErrorCeil(numerator, denominator, target).callAsync();
-                expect(actual).to.eq(expected);
-            });
-
-            it('reverts if `denominator` is zero', async () => {
-                const numerator = ONE_ETHER;
-                const denominator = ZERO_AMOUNT;
-                const target = ONE_ETHER.times(0.01);
-                const expectedError = new LibMathRevertErrors.DivisionByZeroError();
-                return expect(
-                    libsContract.isRoundingErrorCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-
-            it('reverts if `numerator * target` overflows', async () => {
-                const numerator = MAX_UINT256;
-                const denominator = ONE_ETHER.dividedToIntegerBy(2);
-                const target = MAX_UINT256_ROOT.times(2);
-                const expectedError = new SafeMathRevertErrors.Uint256BinOpError(
-                    SafeMathRevertErrors.BinOpErrorCodes.MultiplicationOverflow,
-                    numerator,
-                    target,
-                );
-                return expect(
-                    libsContract.isRoundingErrorCeil(numerator, denominator, target).callAsync(),
-                ).to.revertWith(expectedError);
-            });
-        });
-    });
-});

contracts/utils/test/log_decoding.ts

@@ -1,98 +0,0 @@
-import { chaiSetup, provider, txDefaults, web3Wrapper } from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import { BigNumber } from '@0x/utils';
-import * as chai from 'chai';
-import { DecodedLogArgs, LogWithDecodedArgs } from 'ethereum-types';
-
-import { artifacts } from './artifacts';
-import { TestLogDecodingContract } from './wrappers';
-
-chaiSetup.configure();
-const expect = chai.expect;
-
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('TestLogDecoding', () => {
-    let testLogDecodingWithDependencies: TestLogDecodingContract;
-    let testLogDecodingDeployedWithoutDependencies: TestLogDecodingContract;
-    const expectedEvent = {
-        foo: new BigNumber(256),
-        bar: '0x1234',
-        car: '4321',
-    };
-    const expectedDownstreamEvent = {
-        lorem: new BigNumber(256),
-        ipsum: '4321',
-    };
-    const emptyDependencyList = {};
-
-    before(async () => {
-        testLogDecodingDeployedWithoutDependencies = await TestLogDecodingContract.deployFrom0xArtifactAsync(
-            artifacts.TestLogDecoding,
-            provider,
-            txDefaults,
-            emptyDependencyList,
-        );
-        testLogDecodingWithDependencies = await TestLogDecodingContract.deployFrom0xArtifactAsync(
-            artifacts.TestLogDecoding,
-            provider,
-            txDefaults,
-            artifacts,
-        );
-    });
-    beforeEach(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    afterEach(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-
-    describe('Decoding Log Arguments', () => {
-        it('should decode locally emitted event args when no dependencies are passed into wrapper', async () => {
-            const txReceipt = await testLogDecodingDeployedWithoutDependencies
-                .emitEvent()
-                .awaitTransactionSuccessAsync();
-            expect(txReceipt.logs.length).to.be.equal(1);
-            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(expectedEvent);
-        });
-        it('should not decode event args when no dependencies are passed into wrapper', async () => {
-            const txReceipt = await testLogDecodingDeployedWithoutDependencies
-                .emitEventDownstream()
-                .awaitTransactionSuccessAsync();
-            expect(txReceipt.logs.length).to.be.equal(1);
-            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.undefined();
-        });
-        it('should decode args for local but not downstream event when no dependencies are passed into wrapper', async () => {
-            const txReceipt = await testLogDecodingDeployedWithoutDependencies
-                .emitEventsLocalAndDownstream()
-                .awaitTransactionSuccessAsync();
-            expect(txReceipt.logs.length).to.be.equal(2);
-            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(expectedEvent);
-            expect((txReceipt.logs[1] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.undefined();
-        });
-        it('should decode locally emitted event args when dependencies are passed into wrapper', async () => {
-            const txReceipt = await testLogDecodingWithDependencies.emitEvent().awaitTransactionSuccessAsync();
-            expect(txReceipt.logs.length).to.be.equal(1);
-            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(expectedEvent);
-        });
-        it('should decode downstream event args when dependencies are passed into wrapper', async () => {
-            const txReceipt = await testLogDecodingWithDependencies
-                .emitEventDownstream()
-                .awaitTransactionSuccessAsync();
-            expect(txReceipt.logs.length).to.be.equal(1);
-            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(
-                expectedDownstreamEvent,
-            );
-        });
-        it('should decode args for both local and downstream events when dependencies are passed into wrapper', async () => {
-            const txReceipt = await testLogDecodingWithDependencies
-                .emitEventsLocalAndDownstream()
-                .awaitTransactionSuccessAsync();
-            expect(txReceipt.logs.length).to.be.equal(2);
-            expect((txReceipt.logs[0] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(expectedEvent);
-            expect((txReceipt.logs[1] as LogWithDecodedArgs<DecodedLogArgs>).args).to.be.deep.equal(
-                expectedDownstreamEvent,
-            );
-        });
-    });
-});

contracts/utils/test/refundable.ts

@@ -1,141 +0,0 @@
-import { blockchainTests, constants } from '@0x/contracts-test-utils';
-import { BigNumber } from '@0x/utils';
-import * as _ from 'lodash';
-
-import { artifacts } from './artifacts';
-import { TestRefundableContract, TestRefundableReceiverContract } from './wrappers';
-
-blockchainTests('Refundable', env => {
-    let refundable: TestRefundableContract;
-    let receiver: TestRefundableReceiverContract;
-
-    const ONE_HUNDRED = new BigNumber(100);
-    const ONE_THOUSAND = new BigNumber(1000);
-
-    before(async () => {
-        // Create the refundable contract.
-        refundable = await TestRefundableContract.deployFrom0xArtifactAsync(
-            artifacts.TestRefundable,
-            env.provider,
-            env.txDefaults,
-            {},
-        );
-
-        // Create the receiver contract.
-        receiver = await TestRefundableReceiverContract.deployFrom0xArtifactAsync(
-            artifacts.TestRefundableReceiver,
-            env.provider,
-            env.txDefaults,
-            {},
-        );
-    });
-
-    // The contents of these typescript tests is not adequate to understand the assertions that are made during
-    // these calls. For a more accurate picture, checkout out "./contracts/test/TestRefundableReceiver.sol". Specifically,
-    // the function `testRefundNonzeroBalance()` is used in this test suite.
-    blockchainTests.resets('refundNonzeroBalance', () => {
-        it('should not send a refund when no value is sent', async () => {
-            // Send 100 wei to the refundable contract that should be refunded.
-            await receiver.testRefundNonZeroBalance(refundable.address).awaitTransactionSuccessAsync({
-                value: constants.ZERO_AMOUNT,
-            });
-        });
-
-        it('should send a full refund when nonzero value is sent', async () => {
-            // Send 100 wei to the refundable contract that should be refunded.
-            await receiver.testRefundNonZeroBalance(refundable.address).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-    });
-
-    // The contents of these typescript tests is not adequate to understand the assertions that are made during
-    // these calls. For a more accurate picture, checkout out "./contracts/test/TestRefundableReceiver.sol".
-    blockchainTests.resets('refundFinalBalance', () => {
-        it('should fully refund the sender when `shouldNotRefund` is false', async () => {
-            // Send 100 wei to the refundable contract that should be refunded to the receiver contract.
-            await receiver.testRefundFinalBalance(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-
-        // This test may not be necessary, but it is included here as a sanity check.
-        it('should fully refund the sender when `shouldNotRefund` is false for two calls in a row', async () => {
-            // Send 100 wei to the refundable contract that should be refunded to the receiver contract.
-            await receiver.testRefundFinalBalance(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-
-            // Send 1000 wei to the refundable contract that should be refunded to the receiver contract.
-            await receiver.testRefundFinalBalance(refundable.address, false).awaitTransactionSuccessAsync({
-                value: new BigNumber(1000),
-            });
-        });
-
-        it('should not refund the sender if `shouldNotRefund` is true', async () => {
-            /// Send 100 wei to the refundable contract that should not be refunded.
-            await receiver.testRefundFinalBalance(refundable.address, true).awaitTransactionSuccessAsync({
-                value: new BigNumber(1000),
-            });
-        });
-    });
-
-    // The contents of these typescript tests is not adequate to understand the assertions that are made during
-    // these calls. For a more accurate picture, checkout out "./contracts/test/TestRefundableReceiver.sol".
-    blockchainTests.resets('disableRefundUntilEnd', () => {
-        it('should fully refund the sender when `shouldNotRefund` is false', async () => {
-            // Send 100 wei to the refundable contract that should be refunded to the receiver contract.
-            await receiver.testDisableRefundUntilEnd(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-
-        // This test may not be necessary, but it is included here as a sanity check.
-        it('should fully refund the sender when `shouldNotRefund` is false for two calls in a row', async () => {
-            // Send 100 wei to the refundable contract that should be refunded to the receiver contract.
-            await receiver.testDisableRefundUntilEnd(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-
-            // Send 1000 wei to the refundable contract that should be refunded to the receiver contract.
-            await receiver.testDisableRefundUntilEnd(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_THOUSAND,
-            });
-        });
-
-        it('should not refund the sender if `shouldNotRefund` is true', async () => {
-            /// Send 100 wei to the refundable contract that should not be refunded.
-            await receiver.testDisableRefundUntilEnd(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-
-        it('should disable the `disableRefundUntilEnd` modifier and refund when `shouldNotRefund` is false', async () => {
-            /// Send 100 wei to the refundable contract that should be refunded.
-            await receiver.testNestedDisableRefundUntilEnd(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-
-        it('should disable the `refundFinalBalance` modifier and send no refund when `shouldNotRefund` is true', async () => {
-            /// Send 100 wei to the refundable contract that should not be refunded.
-            await receiver.testNestedDisableRefundUntilEnd(refundable.address, true).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-
-        it('should disable the `refundFinalBalance` modifier and refund when `shouldNotRefund` is false', async () => {
-            /// Send 100 wei to the refundable contract that should be refunded.
-            await receiver.testMixedRefunds(refundable.address, false).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-
-        it('should disable the `refundFinalBalance` modifier and send no refund when `shouldNotRefund` is true', async () => {
-            /// Send 100 wei to the refundable contract that should not be refunded.
-            await receiver.testMixedRefunds(refundable.address, true).awaitTransactionSuccessAsync({
-                value: ONE_HUNDRED,
-            });
-        });
-    });
-});

contracts/utils/test/wrappers.ts

@@ -3,21 +3,13 @@
  * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
  * -----------------------------------------------------------------------------
  */
-export * from '../test/generated-wrappers/authorizable';
 export * from '../test/generated-wrappers/authorizable_v06';
 export * from '../test/generated-wrappers/authorizable_v08';
-export * from '../test/generated-wrappers/d18';
-export * from '../test/generated-wrappers/deployment_constants';
-export * from '../test/generated-wrappers/i_authorizable';
 export * from '../test/generated-wrappers/i_authorizable_v06';
 export * from '../test/generated-wrappers/i_authorizable_v08';
 export * from '../test/generated-wrappers/i_ownable';
 export * from '../test/generated-wrappers/i_ownable_v06';
 export * from '../test/generated-wrappers/i_ownable_v08';
-export * from '../test/generated-wrappers/lib_address';
-export * from '../test/generated-wrappers/lib_address_array';
-export * from '../test/generated-wrappers/lib_address_array_rich_errors';
-export * from '../test/generated-wrappers/lib_authorizable_rich_errors';
 export * from '../test/generated-wrappers/lib_authorizable_rich_errors_v06';
 export * from '../test/generated-wrappers/lib_authorizable_rich_errors_v08';
 export * from '../test/generated-wrappers/lib_bytes';
@@ -26,11 +18,6 @@ export * from '../test/generated-wrappers/lib_bytes_rich_errors_v06';
 export * from '../test/generated-wrappers/lib_bytes_rich_errors_v08';
 export * from '../test/generated-wrappers/lib_bytes_v06';
 export * from '../test/generated-wrappers/lib_bytes_v08';
-export * from '../test/generated-wrappers/lib_e_i_p1271';
-export * from '../test/generated-wrappers/lib_e_i_p712';
-export * from '../test/generated-wrappers/lib_fractions';
-export * from '../test/generated-wrappers/lib_math';
-export * from '../test/generated-wrappers/lib_math_rich_errors';
 export * from '../test/generated-wrappers/lib_math_rich_errors_v06';
 export * from '../test/generated-wrappers/lib_math_rich_errors_v08';
 export * from '../test/generated-wrappers/lib_math_v06';
@@ -53,20 +40,9 @@ export * from '../test/generated-wrappers/ownable';
 export * from '../test/generated-wrappers/ownable_v06';
 export * from '../test/generated-wrappers/ownable_v08';
 export * from '../test/generated-wrappers/reentrancy_guard';
-export * from '../test/generated-wrappers/reentrancy_guard_v06';
 export * from '../test/generated-wrappers/reentrancy_guard_v08';
-export * from '../test/generated-wrappers/refundable';
-export * from '../test/generated-wrappers/test_authorizable';
-export * from '../test/generated-wrappers/test_lib_address';
-export * from '../test/generated-wrappers/test_lib_address_array';
 export * from '../test/generated-wrappers/test_lib_bytes';
-export * from '../test/generated-wrappers/test_lib_e_i_p712';
-export * from '../test/generated-wrappers/test_lib_math';
 export * from '../test/generated-wrappers/test_lib_rich_errors';
 export * from '../test/generated-wrappers/test_lib_safe_math';
-export * from '../test/generated-wrappers/test_log_decoding';
-export * from '../test/generated-wrappers/test_log_decoding_downstream';
 export * from '../test/generated-wrappers/test_ownable';
 export * from '../test/generated-wrappers/test_reentrancy_guard';
-export * from '../test/generated-wrappers/test_refundable';
-export * from '../test/generated-wrappers/test_refundable_receiver';

contracts/utils/tsconfig.json

@@ -3,20 +3,9 @@
     "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
     "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
     "files": [
-        "generated-artifacts/Authorizable.json",
-        "generated-artifacts/IAuthorizable.json",
         "generated-artifacts/IOwnable.json",
-        "generated-artifacts/LibAddress.json",
-        "generated-artifacts/LibAddressArray.json",
-        "generated-artifacts/LibAddressArrayRichErrors.json",
-        "generated-artifacts/LibAuthorizableRichErrors.json",
         "generated-artifacts/LibBytes.json",
         "generated-artifacts/LibBytesRichErrors.json",
-        "generated-artifacts/LibEIP1271.json",
-        "generated-artifacts/LibEIP712.json",
-        "generated-artifacts/LibFractions.json",
-        "generated-artifacts/LibMath.json",
-        "generated-artifacts/LibMathRichErrors.json",
         "generated-artifacts/LibOwnableRichErrors.json",
         "generated-artifacts/LibReentrancyGuardRichErrors.json",
         "generated-artifacts/LibRichErrors.json",
@@ -24,22 +13,13 @@
         "generated-artifacts/LibSafeMathRichErrors.json",
         "generated-artifacts/Ownable.json",
         "generated-artifacts/ReentrancyGuard.json",
-        "generated-artifacts/Refundable.json",
-        "test/generated-artifacts/Authorizable.json",
         "test/generated-artifacts/AuthorizableV06.json",
         "test/generated-artifacts/AuthorizableV08.json",
-        "test/generated-artifacts/D18.json",
-        "test/generated-artifacts/DeploymentConstants.json",
-        "test/generated-artifacts/IAuthorizable.json",
         "test/generated-artifacts/IAuthorizableV06.json",
         "test/generated-artifacts/IAuthorizableV08.json",
         "test/generated-artifacts/IOwnable.json",
         "test/generated-artifacts/IOwnableV06.json",
         "test/generated-artifacts/IOwnableV08.json",
-        "test/generated-artifacts/LibAddress.json",
-        "test/generated-artifacts/LibAddressArray.json",
-        "test/generated-artifacts/LibAddressArrayRichErrors.json",
-        "test/generated-artifacts/LibAuthorizableRichErrors.json",
         "test/generated-artifacts/LibAuthorizableRichErrorsV06.json",
         "test/generated-artifacts/LibAuthorizableRichErrorsV08.json",
         "test/generated-artifacts/LibBytes.json",
@@ -48,11 +28,6 @@
         "test/generated-artifacts/LibBytesRichErrorsV08.json",
         "test/generated-artifacts/LibBytesV06.json",
         "test/generated-artifacts/LibBytesV08.json",
-        "test/generated-artifacts/LibEIP1271.json",
-        "test/generated-artifacts/LibEIP712.json",
-        "test/generated-artifacts/LibFractions.json",
-        "test/generated-artifacts/LibMath.json",
-        "test/generated-artifacts/LibMathRichErrors.json",
         "test/generated-artifacts/LibMathRichErrorsV06.json",
         "test/generated-artifacts/LibMathRichErrorsV08.json",
         "test/generated-artifacts/LibMathV06.json",
@@ -75,23 +50,12 @@
         "test/generated-artifacts/OwnableV06.json",
         "test/generated-artifacts/OwnableV08.json",
         "test/generated-artifacts/ReentrancyGuard.json",
-        "test/generated-artifacts/ReentrancyGuardV06.json",
         "test/generated-artifacts/ReentrancyGuardV08.json",
-        "test/generated-artifacts/Refundable.json",
-        "test/generated-artifacts/TestAuthorizable.json",
-        "test/generated-artifacts/TestLibAddress.json",
-        "test/generated-artifacts/TestLibAddressArray.json",
         "test/generated-artifacts/TestLibBytes.json",
-        "test/generated-artifacts/TestLibEIP712.json",
-        "test/generated-artifacts/TestLibMath.json",
         "test/generated-artifacts/TestLibRichErrors.json",
         "test/generated-artifacts/TestLibSafeMath.json",
-        "test/generated-artifacts/TestLogDecoding.json",
-        "test/generated-artifacts/TestLogDecodingDownstream.json",
         "test/generated-artifacts/TestOwnable.json",
-        "test/generated-artifacts/TestReentrancyGuard.json",
-        "test/generated-artifacts/TestRefundable.json",
-        "test/generated-artifacts/TestRefundableReceiver.json"
+        "test/generated-artifacts/TestReentrancyGuard.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]
 }

contracts/zero-ex/CHANGELOG.json

@@ -1,4 +1,30 @@
 [
+    {
+        "version": "0.39.0",
+        "changes": [
+            {
+                "note": "Add KyberElastic mixin for Ethereum, Polygon, Arbitrum, Avalanche"
+            }
+        ]
+    },
+    {
+        "timestamp": 1675210931,
+        "version": "0.38.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1675105183,
+        "version": "0.38.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1674517560,
         "version": "0.38.4",

contracts/zero-ex/CHANGELOG.md

@@ -5,6 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v0.38.6 - _February 1, 2023_
+
+    * Dependencies updated
+
+## v0.38.5 - _January 30, 2023_
+
+    * Dependencies updated
+
 ## v0.38.4 - _January 23, 2023_
 
     * Dependencies updated

contracts/zero-ex/README.md

@@ -67,3 +67,22 @@ yarn lint
 ```bash
 yarn test
 ```
+
+### Run Integration Tests
+you will need to create a .env that the root of `/contracts/zero-ex` containing rpc's for all 7 chains the tests will be run on
+
+```sh
+ARBITRUM_RPC_URL=https://arb-mainnet........
+AVALANCHE_RPC_URL=https://avalanche-mainnet......
+BSC_RPC_URL=https://bsc-mainnet......
+FANTOM_RPC_URL=https://fantom-mainnet......
+MAINNET_RPC_URL=https://eth-mainnet......
+OPTIMISM_RPC_URL=https://opt-mainnet......
+POLYGON_RPC_URL=https://polygon-mainnet......
+```
+
+```bash
+git submodule update --init --recursive
+foundryup
+yarn test:integration
+```

contracts/zero-ex/compiler.json

@@ -110,6 +110,7 @@
         "./contracts/src/transformers/Transformer.sol",
         "./contracts/src/transformers/WethTransformer.sol",
         "./contracts/src/transformers/bridges/AbstractBridgeAdapter.sol",
+        "./contracts/src/transformers/bridges/ArbitrumBridgeAdapter.sol",
         "./contracts/src/transformers/bridges/AvalancheBridgeAdapter.sol",
         "./contracts/src/transformers/bridges/BSCBridgeAdapter.sol",
         "./contracts/src/transformers/bridges/BridgeProtocols.sol",

contracts/zero-ex/contracts/src/IZeroEx.sol

@@ -1,20 +1,15 @@
 // SPDX-License-Identifier: Apache-2.0
 /*
-
-  Copyright 2020 ZeroEx Intl.
-
+  Copyright 2023 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;

contracts/zero-ex/contracts/src/ZeroEx.sol

@@ -1,20 +1,15 @@
 // SPDX-License-Identifier: Apache-2.0
 /*
-
-  Copyright 2020 ZeroEx Intl.
-
+  Copyright 2023 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;