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0x is an open protocol that facilitates trustless, low friction exchange of Ethereum-based assets. A full description of the protocol may be found in our whitepaper.

This repository is a monorepo including the 0x protocol smart contracts and numerous developer tools. Each public sub-package is independently published to NPM.

If you're developing on 0x now or are interested in using 0x infrastructure in the future, please join our developer mailing list for updates.

Published Packages

Package	Version	Description
0x.js		A Javascript library for interacting with the 0x protocol
@0x/abi-gen		Tool to generate TS wrappers from smart contract ABIs
@0x/abi-gen-wrappers		Low-level 0x smart contract wrappers generated using @0x/abi-gen
@0x/assert		Type and schema assertions used by our packages
@0x/asset-buyer		Convenience package for discovering and buying assets with Ether
@0x/base-contract		BaseContract used by auto-generated abi-gen wrapper contracts
@0x/connect		A Javascript library for interacting with the Standard Relayer API
@0x/contract-addresses		Used to get known addresses of deployed 0x contracts
@0x/contract-artifacts		0x smart contract compilation artifacts
@0x/contract-wrappers		Smart TS wrappers for 0x smart contracts
@0x/dev-utils		Dev utils to be shared across 0x projects and packages
@0x/fill-scenarios		0x order fill scenario generation
@0x/json-schemas		0x-related json schemas
@0x/migrations		0x smart contract migrations
@0x/order-utils		A set of utilities for generating, parsing, signing and validating 0x orders
@0x/order-watcher		An order watcher daemon that watches for order validity
@0x/react-docs		React documentation component for rendering TypeDoc & Doxity generated JSON
@0x/react-shared		0x shared react components
@0x/sol-compiler		A thin wrapper around Solc.js that outputs artifacts, resolves imports, only re-compiles when needed, and other niceties
@0x/sol-cov		Solidity test coverage tool
@0x/sol-doc		Solidity documentation generator
@0x/sol-resolver		Import resolver for smart contracts dependencies
@0x/sra-spec		OpenAPI specification for the standard relayer API
@0x/subproviders		Useful web3 subproviders (e.g. LedgerSubprovider)
@0x/tslint-config		Custom 0x development TSLint rules
@0x/types		Shared type declarations
@0x/typescript-typings		Repository of types for external packages
@0x/utils		Shared utilities
@0x/web3-wrapper		Web3 wrapper

Private Packages

Package	Description
@0x/contracts	0x solidity smart contracts & tests
@0x/react-docs-example	Example documentation site created with @0x/react-docs
@0x/testnet-faucets	A faucet micro-service that dispenses test ERC20 tokens or Ether
@0x/website	0x website & Portal DApp

Usage

Dedicated documentation pages:

• 0x.js Library
• 0x Connect
• Smart contracts
• Subproviders
• Sol Compiler
• Web3-wrapper
• JSON-schemas
• Sol-cov
• Standard Relayer API

Node version >= 6.12 is required.

Most of the packages require additional typings for external dependencies. You can include those by prepending the @0x/typescript-typings package to your typeRoots config.

"typeRoots": ["node_modules/@0x/typescript-typings/types", "node_modules/@types"],

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.

Read our contribution guidelines.

Install dependencies

Make sure you are using Yarn v1.9.4. To install using brew:

brew install [email protected]

Then install dependencies

yarn install

Build

To build all packages:

yarn build

To build a specific package:

PKG=@0x/web3-wrapper yarn build

Watch

To re-build all packages on change:

yarn watch

To watch a specific package and all it's dependent packages:

PKG=[NPM_PACKAGE_NAME] yarn watch

e.g
PKG=@0x/web3-wrapper yarn watch

Clean

Clean all packages:

yarn clean

Clean a specific package

PKG=0x.js yarn clean

Rebuild

To re-build (clean & build) all packages:

yarn rebuild

To re-build (clean & build) a specific package & it's deps:

PKG=0x.js yarn rebuild

Lint

Lint all packages:

yarn lint

Lint a specific package:

PKG=0x.js yarn lint

Run Tests

Run all tests:

yarn test

Run a specific package's test:

PKG=@0x/web3-wrapper yarn test