Refactor out libs into @0x/contracts-libs

.gitignore

@@ -82,6 +82,7 @@ packages/testnet-faucets/server/
 contracts/core/generated-artifacts/
 contracts/multisig/generated-artifacts/
 contracts/utils/generated-artifacts/
+contracts/libs/generated-artifacts/
 packages/sol-cov/test/fixtures/artifacts/
 packages/metacoin/artifacts/
 
@@ -90,6 +91,7 @@ packages/abi-gen-wrappers/wrappers
 contracts/core/generated-wrappers/
 contracts/multisig/generated-wrappers/
 contracts/utils/generated-wrappers/
+contracts/libs/generated-wrappers/
 packages/metacoin/src/contract_wrappers
 
 # solc-bin in sol-compiler

.prettierignore

@@ -6,6 +6,8 @@ lib
 /contracts/multisig/generated-artifacts
 /contracts/utils/generated-wrappers
 /contracts/utils/generated-artifacts
+/contracts/libs/generated-wrappers
+/contracts/libs/generated-artifacts
 /packages/abi-gen-wrappers/src/generated-wrappers
 /packages/contract-artifacts/artifacts
 /python-packages/order_utils/src/zero_ex/contract_artifacts/artifacts

contracts/core/compiler.json

@@ -44,7 +44,6 @@
         "ReentrantERC20Token",
         "TestAssetProxyOwner",
         "TestAssetProxyDispatcher",
-        "TestLibs",
         "TestExchangeInternals",
         "TestSignatureValidator",
         "TestStaticCallReceiver",

contracts/core/contracts/examples/ExchangeWrapper/ExchangeWrapper.sol

@@ -20,7 +20,7 @@ pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
 import "../../protocol/Exchange/interfaces/IExchange.sol";
-import "../../protocol/Exchange/libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
 
 
 contract ExchangeWrapper {

contracts/core/contracts/examples/Whitelist/Whitelist.sol

@@ -20,7 +20,7 @@ pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
 import "../../protocol/Exchange/interfaces/IExchange.sol";
-import "../../protocol/Exchange/libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
 import "@0x/contracts-utils/contracts/utils/Ownable/Ownable.sol";
 
 

contracts/core/contracts/extensions/DutchAuction/DutchAuction.sol

@@ -20,7 +20,7 @@ pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
 import "../../protocol/Exchange/interfaces/IExchange.sol";
-import "../../protocol/Exchange/libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
 import "../../tokens/ERC20Token/IERC20Token.sol";
 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
 import "@0x/contracts-utils/contracts/utils/SafeMath/SafeMath.sol";

contracts/core/contracts/extensions/Forwarder/MixinExchangeWrapper.sol

@@ -21,10 +21,10 @@ pragma experimental ABIEncoderV2;
 
 import "./libs/LibConstants.sol";
 import "./mixins/MExchangeWrapper.sol";
-import "../../protocol/Exchange/libs/LibAbiEncoder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibAbiEncoder.sol";
-import "../../protocol/Exchange/libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "../../protocol/Exchange/libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
-import "../../protocol/Exchange/libs/LibMath.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibMath.sol";
 
 
 contract MixinExchangeWrapper is

contracts/core/contracts/extensions/Forwarder/MixinForwarderCore.sol

@@ -25,9 +25,9 @@ import "./mixins/MAssets.sol";
 import "./mixins/MExchangeWrapper.sol";
 import "./interfaces/IForwarderCore.sol";
 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
-import "../../protocol/Exchange/libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "../../protocol/Exchange/libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
-import "../../protocol/Exchange/libs/LibMath.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibMath.sol";
 
 
 contract MixinForwarderCore is

contracts/core/contracts/extensions/Forwarder/MixinWeth.sol

@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../../protocol/Exchange/libs/LibMath.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibMath.sol";
 import "./libs/LibConstants.sol";
 import "./mixins/MWeth.sol";
 

contracts/core/contracts/extensions/Forwarder/interfaces/IForwarderCore.sol

@@ -19,8 +19,8 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../../../protocol/Exchange/libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "../../../protocol/Exchange/libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
 
 
 contract IForwarderCore {

contracts/core/contracts/extensions/Forwarder/mixins/MExchangeWrapper.sol

@@ -19,8 +19,8 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../../../protocol/Exchange/libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "../../../protocol/Exchange/libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
 
 
 contract MExchangeWrapper {

contracts/core/contracts/extensions/OrderValidator/OrderValidator.sol

@@ -20,7 +20,7 @@ pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
 import "../../protocol/Exchange/interfaces/IExchange.sol";
-import "../../protocol/Exchange/libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
 import "../../tokens/ERC20Token/IERC20Token.sol";
 import "../../tokens/ERC721Token/IERC721Token.sol";
 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";

contracts/core/contracts/protocol/Exchange/Exchange.sol

@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "./libs/LibConstants.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibConstants.sol";
 import "./MixinExchangeCore.sol";
 import "./MixinSignatureValidator.sol";
 import "./MixinWrapperFunctions.sol";

contracts/core/contracts/protocol/Exchange/MixinExchangeCore.sol

@@ -20,10 +20,10 @@ pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-utils/contracts/utils/ReentrancyGuard/ReentrancyGuard.sol";
-import "./libs/LibConstants.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibConstants.sol";
-import "./libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
-import "./libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "./libs/LibMath.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibMath.sol";
 import "./mixins/MExchangeCore.sol";
 import "./mixins/MSignatureValidator.sol";
 import "./mixins/MTransactions.sol";

contracts/core/contracts/protocol/Exchange/MixinMatchOrders.sol

@@ -15,10 +15,10 @@ pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-utils/contracts/utils/ReentrancyGuard/ReentrancyGuard.sol";
-import "./libs/LibConstants.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibConstants.sol";
-import "./libs/LibMath.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibMath.sol";
-import "./libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "./libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
 import "./mixins/MExchangeCore.sol";
 import "./mixins/MMatchOrders.sol";
 import "./mixins/MTransactions.sol";

contracts/core/contracts/protocol/Exchange/MixinTransactions.sol

@@ -17,10 +17,10 @@
 */
 pragma solidity 0.4.24;
 
-import "./libs/LibExchangeErrors.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibExchangeErrors.sol";
 import "./mixins/MSignatureValidator.sol";
 import "./mixins/MTransactions.sol";
-import "./libs/LibEIP712.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibEIP712.sol";
 
 
 contract MixinTransactions is

contracts/core/contracts/protocol/Exchange/MixinWrapperFunctions.sol

@@ -20,10 +20,10 @@ pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-utils/contracts/utils/ReentrancyGuard/ReentrancyGuard.sol";
-import "./libs/LibMath.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibMath.sol";
-import "./libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "./libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
-import "./libs/LibAbiEncoder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibAbiEncoder.sol";
 import "./mixins/MExchangeCore.sol";
 import "./mixins/MWrapperFunctions.sol";
 

contracts/core/contracts/protocol/Exchange/interfaces/IExchangeCore.sol

@@ -19,8 +19,8 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "../libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
 
 
 contract IExchangeCore {

contracts/core/contracts/protocol/Exchange/interfaces/IMatchOrders.sol

@@ -18,8 +18,8 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "../libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
 
 
 contract IMatchOrders {

contracts/core/contracts/protocol/Exchange/interfaces/IWrapperFunctions.sol

@@ -19,8 +19,8 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "../libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
 
 
 contract IWrapperFunctions {

contracts/core/contracts/protocol/Exchange/mixins/MExchangeCore.sol

@@ -19,8 +19,8 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "../libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
 import "../interfaces/IExchangeCore.sol";
 
 

contracts/core/contracts/protocol/Exchange/mixins/MMatchOrders.sol

@@ -18,8 +18,8 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "../libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
 import "../interfaces/IMatchOrders.sol";
 
 

contracts/core/contracts/protocol/Exchange/mixins/MWrapperFunctions.sol

@@ -19,8 +19,8 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
-import "../libs/LibFillResults.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibFillResults.sol";
 import "../interfaces/IWrapperFunctions.sol";
 
 

contracts/core/contracts/test/ReentrantERC20Token/ReentrantERC20Token.sol

@@ -22,7 +22,7 @@ pragma experimental ABIEncoderV2;
 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
 import "../../tokens/ERC20Token/ERC20Token.sol";
 import "../../protocol/Exchange/interfaces/IExchange.sol";
-import "../../protocol/Exchange/libs/LibOrder.sol";
+import "@0x/contracts-libs/contracts/protocol/Exchange/libs/LibOrder.sol";
 
 
 // solhint-disable no-unused-vars

contracts/core/package.json

@@ -33,7 +33,7 @@
         "lint-contracts": "solhint contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(AssetProxyOwner|DummyERC20Token|DummyERC721Receiver|DummyERC721Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|DutchAuction|ERC20Token|ERC20Proxy|ERC721Token|ERC721Proxy|Forwarder|Exchange|ExchangeWrapper|IAssetData|IAssetProxy|InvalidERC721Receiver|MixinAuthorizable|MultiAssetProxy|OrderValidator|ReentrantERC20Token|TestAssetProxyOwner|TestAssetProxyDispatcher|TestConstants|TestExchangeInternals|TestLibBytes|TestLibs|TestSignatureValidator|TestStaticCallReceiver|Validator|Wallet|Whitelist|WETH9|ZRXToken).json"
+        "abis": "generated-artifacts/@(AssetProxyOwner|DummyERC20Token|DummyERC721Receiver|DummyERC721Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|DutchAuction|ERC20Token|ERC20Proxy|ERC721Token|ERC721Proxy|Forwarder|Exchange|ExchangeWrapper|IAssetData|IAssetProxy|InvalidERC721Receiver|MixinAuthorizable|MultiAssetProxy|OrderValidator|ReentrantERC20Token|TestAssetProxyOwner|TestAssetProxyDispatcher|TestConstants|TestExchangeInternals|TestLibBytes|TestSignatureValidator|TestStaticCallReceiver|Validator|Wallet|Whitelist|WETH9|ZRXToken).json"
     },
     "repository": {
         "type": "git",
@@ -76,6 +76,7 @@
         "@0x/order-utils": "^3.0.4",
         "@0x/contracts-multisig": "^1.0.0",
         "@0x/contracts-utils": "^1.0.0",
+        "@0x/contracts-libs": "^1.0.0",
         "@0x/types": "^1.3.0",
         "@0x/typescript-typings": "^3.0.4",
         "@0x/utils": "^2.0.6",

contracts/core/src/artifacts/index.ts

@@ -26,7 +26,6 @@ import * as ReentrantERC20Token from '../../generated-artifacts/ReentrantERC20To
 import * as TestAssetProxyDispatcher from '../../generated-artifacts/TestAssetProxyDispatcher.json';
 import * as TestAssetProxyOwner from '../../generated-artifacts/TestAssetProxyOwner.json';
 import * as TestExchangeInternals from '../../generated-artifacts/TestExchangeInternals.json';
-import * as TestLibs from '../../generated-artifacts/TestLibs.json';
 import * as TestSignatureValidator from '../../generated-artifacts/TestSignatureValidator.json';
 import * as TestStaticCallReceiver from '../../generated-artifacts/TestStaticCallReceiver.json';
 import * as Validator from '../../generated-artifacts/Validator.json';
@@ -62,7 +61,6 @@ export const artifacts = {
     TestAssetProxyDispatcher: TestAssetProxyDispatcher as ContractArtifact,
     TestAssetProxyOwner: TestAssetProxyOwner as ContractArtifact,
     TestExchangeInternals: TestExchangeInternals as ContractArtifact,
-    TestLibs: TestLibs as ContractArtifact,
     TestSignatureValidator: TestSignatureValidator as ContractArtifact,
     TestStaticCallReceiver: TestStaticCallReceiver as ContractArtifact,
     Validator: Validator as ContractArtifact,

contracts/core/src/wrappers/index.ts

@@ -21,7 +21,6 @@ export * from '../../generated-wrappers/reentrant_erc20_token';
 export * from '../../generated-wrappers/test_asset_proxy_dispatcher';
 export * from '../../generated-wrappers/test_asset_proxy_owner';
 export * from '../../generated-wrappers/test_exchange_internals';
-export * from '../../generated-wrappers/test_libs';
 export * from '../../generated-wrappers/test_signature_validator';
 export * from '../../generated-wrappers/test_static_call_receiver';
 export * from '../../generated-wrappers/validator';

contracts/core/test/utils/fill_order_combinatorial_utils.ts

@@ -1,3 +1,4 @@
+import { artifacts as libsArtifacts } from '@0x/contracts-libs';
 import {
     AllowanceAmountScenario,
     AssetDataScenario,
@@ -131,7 +132,11 @@ export async function fillOrderCombinatorialUtilsFactoryAsync(
         exchangeContract.address,
     );
 
-    const testLibsContract = await TestLibsContract.deployFrom0xArtifactAsync(artifacts.TestLibs, provider, txDefaults);
+    const testLibsContract = await TestLibsContract.deployFrom0xArtifactAsync(
+        libsArtifacts.TestLibs,
+        provider,
+        txDefaults,
+    );
 
     const fillOrderCombinatorialUtils = new FillOrderCombinatorialUtils(
         orderFactory,

contracts/core/tsconfig.json

@@ -33,7 +33,6 @@
         "./generated-artifacts/TestAssetProxyDispatcher.json",
         "./generated-artifacts/TestAssetProxyOwner.json",
         "./generated-artifacts/TestExchangeInternals.json",
-        "./generated-artifacts/TestLibs.json",
         "./generated-artifacts/TestSignatureValidator.json",
         "./generated-artifacts/TestStaticCallReceiver.json",
         "./generated-artifacts/Validator.json",

contracts/libs/.solhint.json

@@ -0,0 +1,20 @@
+{
+    "extends": "default",
+    "rules": {
+        "avoid-low-level-calls": false,
+        "avoid-tx-origin": "warn",
+        "bracket-align": false,
+        "code-complexity": false,
+        "const-name-snakecase": "error",
+        "expression-indent": "error",
+        "function-max-lines": false,
+        "func-order": "error",
+        "indent": ["error", 4],
+        "max-line-length": ["warn", 160],
+        "no-inline-assembly": false,
+        "quotes": ["error", "double"],
+        "separate-by-one-line-in-contract": "error",
+        "space-after-comma": "error",
+        "statement-indent": "error"
+    }
+}

contracts/libs/README.md

@@ -0,0 +1,70 @@
+## Contracts libs
+
+Smart contracts libs used in the 0x protocol.
+
+## Usage
+
+Contracts can be found in the [contracts](./contracts) directory. The contents of this directory are broken down into the following subdirectories:
+
+*   [protocol](./contracts/protocol)
+    *   This directory contains the libs used by protocol contracts.
+*   [test](./contracts/test)
+    *   This directory contains mocks and other contracts that are used solely for testing contracts within the other directories.
+
+## Contributing
+
+We strongly recommend that the community help us make improvements and determine the future direction of the protocol. To report bugs within this package, please create an issue in this repository.
+
+For proposals regarding the 0x protocol's smart contract architecture, message format, or additional functionality, go to the [0x Improvement Proposals (ZEIPs)](https://github.com/0xProject/ZEIPs) repository and follow the contribution guidelines provided therein.
+
+Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+
+### Install Dependencies
+
+If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
+
+```bash
+yarn config set workspaces-experimental true
+```
+
+Then install dependencies
+
+```bash
+yarn install
+```
+
+### Build
+
+To build this package and all other monorepo packages that it depends on, run the following from the monorepo root directory:
+
+```bash
+PKG=@0x/contracts-libs yarn build
+```
+
+Or continuously rebuild on change:
+
+```bash
+PKG=@0x/contracts-libs yarn watch
+```
+
+### Clean
+
+```bash
+yarn clean
+```
+
+### Lint
+
+```bash
+yarn lint
+```
+
+### Run Tests
+
+```bash
+yarn test
+```
+
+#### Testing options
+
+Contracts testing options like coverage, profiling, revert traces or backing node choosing - are described [here](../TESTING.md).

contracts/libs/compiler.json

@@ -0,0 +1,22 @@
+{
+    "artifactsDir": "./generated-artifacts",
+    "contractsDir": "./contracts",
+    "compilerSettings": {
+        "optimizer": {
+            "enabled": true,
+            "runs": 1000000
+        },
+        "outputSelection": {
+            "*": {
+                "*": [
+                    "abi",
+                    "evm.bytecode.object",
+                    "evm.bytecode.sourceMap",
+                    "evm.deployedBytecode.object",
+                    "evm.deployedBytecode.sourceMap"
+                ]
+            }
+        }
+    },
+    "contracts": ["TestLibs", "LibOrder", "LibMath", "LibFillResults", "LibAbiEncoder", "LibEIP712"]
+}

contracts/libs/package.json

@@ -0,0 +1,92 @@
+{
+    "private": true,
+    "name": "@0x/contracts-libs",
+    "version": "1.0.0",
+    "engines": {
+        "node": ">=6.12"
+    },
+    "description": "Smart contract libs of 0x protocol",
+    "main": "lib/src/index.js",
+    "directories": {
+        "test": "test"
+    },
+    "scripts": {
+        "build": "yarn pre_build && tsc -b",
+        "build:ci": "yarn build",
+        "pre_build": "run-s compile generate_contract_wrappers",
+        "test": "yarn run_mocha",
+        "rebuild_and_test": "run-s build test",
+        "test:coverage": "SOLIDITY_COVERAGE=true run-s build run_mocha coverage:report:text coverage:report:lcov",
+        "test:profiler": "SOLIDITY_PROFILER=true run-s build run_mocha profiler:report:html",
+        "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 --contracts-dir contracts",
+        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
+        "coverage:report:text": "istanbul report text",
+        "coverage:report:html": "istanbul report html && open coverage/index.html",
+        "profiler:report:html": "istanbul report html && open coverage/index.html",
+        "coverage:report:lcov": "istanbul report lcov",
+        "test:circleci": "yarn test",
+        "lint-contracts": "solhint contracts/**/**/**/**/*.sol"
+    },
+    "config": {
+        "abis": "generated-artifacts/@(LibMath|LibOrder|LibFillResults|LibAbiEncoder|TestLibs|LibEIP712).json"
+    },
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/0xProject/0x-monorepo.git"
+    },
+    "license": "Apache-2.0",
+    "bugs": {
+        "url": "https://github.com/0xProject/0x-monorepo/issues"
+    },
+    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/libs/README.md",
+    "devDependencies": {
+        "@0x/contracts-test-utils": "^1.0.0",
+        "@0x/abi-gen": "^1.0.17",
+        "@0x/dev-utils": "^1.0.19",
+        "@0x/sol-compiler": "^1.1.14",
+        "@0x/sol-cov": "^2.1.14",
+        "@0x/subproviders": "^2.1.6",
+        "@0x/tslint-config": "^1.0.10",
+        "@types/bn.js": "^4.11.0",
+        "@types/lodash": "4.14.104",
+        "@types/node": "*",
+        "@types/yargs": "^10.0.0",
+        "chai": "^4.0.1",
+        "chai-as-promised": "^7.1.0",
+        "chai-bignumber": "^2.0.1",
+        "dirty-chai": "^2.0.1",
+        "make-promises-safe": "^1.1.0",
+        "ethereumjs-abi": "0.6.5",
+        "mocha": "^4.1.0",
+        "npm-run-all": "^4.1.2",
+        "shx": "^0.2.2",
+        "solc": "^0.4.24",
+        "solhint": "^1.2.1",
+        "tslint": "5.11.0",
+        "typescript": "3.0.1",
+        "yargs": "^10.0.3"
+    },
+    "dependencies": {
+        "@0x/base-contract": "^3.0.8",
+        "@0x/order-utils": "^3.0.4",
+        "@0x/contracts-multisig": "^1.0.0",
+        "@0x/contracts-utils": "^1.0.0",
+        "@0x/types": "^1.3.0",
+        "@0x/typescript-typings": "^3.0.4",
+        "@0x/utils": "^2.0.6",
+        "@0x/web3-wrapper": "^3.1.6",
+        "@types/js-combinatorics": "^0.5.29",
+        "bn.js": "^4.11.8",
+        "ethereum-types": "^1.1.2",
+        "ethereumjs-util": "^5.1.1",
+        "lodash": "^4.17.5"
+    },
+    "publishConfig": {
+        "access": "public"
+    }
+}

contracts/libs/src/artifacts/index.ts

@@ -0,0 +1,17 @@
+import { ContractArtifact } from 'ethereum-types';
+
+import * as LibAbiEncoder from '../../generated-artifacts/LibAbiEncoder.json';
+import * as LibEIP721 from '../../generated-artifacts/LibEIP712.json';
+import * as LibFillResults from '../../generated-artifacts/LibFillResults.json';
+import * as LibMath from '../../generated-artifacts/LibMath.json';
+import * as LibOrder from '../../generated-artifacts/LibOrder.json';
+import * as TestLibs from '../../generated-artifacts/TestLibs.json';
+
+export const artifacts = {
+    TestLibs: TestLibs as ContractArtifact,
+    LibAbiEncoder: LibAbiEncoder as ContractArtifact,
+    LibFillResults: LibFillResults as ContractArtifact,
+    LibMath: LibMath as ContractArtifact,
+    LibOrder: LibOrder as ContractArtifact,
+    LibEIP721: LibEIP721 as ContractArtifact,
+};

contracts/libs/src/index.ts

@@ -0,0 +1,2 @@
+export * from './artifacts';
+export * from './wrappers';

contracts/libs/src/wrappers/index.ts

@@ -0,0 +1,6 @@
+export * from '../../generated-wrappers/test_libs';
+export * from '../../generated-wrappers/lib_abi_encoder';
+export * from '../../generated-wrappers/lib_fill_results';
+export * from '../../generated-wrappers/lib_math';
+export * from '../../generated-wrappers/lib_order';
+export * from '../../generated-wrappers/lib_e_i_p712';

contracts/libs/test/global_hooks.ts

@@ -0,0 +1,17 @@
+import { env, EnvVars } from '@0x/dev-utils';
+
+import { coverage, profiler, provider } from '@0x/contracts-test-utils';
+before('start web3 provider', () => {
+    provider.start();
+});
+after('generate coverage report', async () => {
+    if (env.parseBoolean(EnvVars.SolidityCoverage)) {
+        const coverageSubprovider = coverage.getCoverageSubproviderSingleton();
+        await coverageSubprovider.writeCoverageAsync();
+    }
+    if (env.parseBoolean(EnvVars.SolidityProfiler)) {
+        const profilerSubprovider = profiler.getProfilerSubproviderSingleton();
+        await profilerSubprovider.writeProfilerOutputAsync();
+    }
+    provider.stop();
+});

contracts/libs/tsconfig.json

@@ -0,0 +1,18 @@
+{
+    "extends": "../../tsconfig",
+    "compilerOptions": {
+        "outDir": "lib",
+        "rootDir": ".",
+        "resolveJsonModule": true
+    },
+    "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
+    "files": [
+        "./generated-artifacts/TestLibs.json",
+        "./generated-artifacts/LibOrder.json",
+        "./generated-artifacts/LibFillResults.json",
+        "./generated-artifacts/LibAbiEncoder.json",
+        "./generated-artifacts/LibEIP712.json",
+        "./generated-artifacts/LibMath.json"
+    ],
+    "exclude": ["./deploy/solc/solc_bin"]
+}

contracts/libs/tslint.json

@@ -0,0 +1,6 @@
+{
+    "extends": ["@0x/tslint-config"],
+    "rules": {
+        "custom-no-magic-numbers": false
+    }
+}