0x.js

A TypeScript/Javascript library for interacting with the 0x protocol. It is a high level package which combines a number of underlying packages such as order-utils and asset-data-utils.

Read the Documentation.

Installation

0x.js ships as both a UMD module and a CommonJS package.

CommonJS (recommended):

Install

npm install 0x.js --save

Import

import {
    assetDataUtils,
    BigNumber,
    ContractWrappers,
    generatePseudoRandomSalt,
    orderHashUtils,
    signatureUtils,
} from '0x.js';

If your project is in TypeScript, add the following to your tsconfig.json:

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

UMD:

Install

Download the UMD module from our releases page and add it to your project.

Import

<script type="text/javascript" src="0x.js"></script>

Webpack config

If bundling your project with Webpack, add the following to your webpack.config.js:

If building for web:

node: {
    fs: 'empty';
}

If building a node library:

externals: {
    fs: true;
}

ContractWrappers uses WebAssembly to simulate Ethereum calls. This toolchain involves generated 'glue' code that requires the fs built-in, but won't actually use it in a web environment. We tell Webpack not to resolve them since we won't need them. The specific dependency is here.

Also see:

• https://webpack.js.org/configuration/externals
• https://webpack.js.org/configuration/node

Contributing

We strongly recommend that the community help us make improvements and determine the future direction of 0x protocol. To report bugs within this package, please create an issue in this repository.

Please read our contribution guidelines before getting started.

Install dependencies

If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:

yarn config set workspaces-experimental true

Then install dependencies

yarn install

Build

To build this package and all other monorepo packages that it depends on, run the following from the monorepo root directory:

PKG=0x.js yarn build

Or continuously rebuild on change:

PKG=0x.js yarn watch

Clean

yarn clean

Lint

yarn lint

Run Tests

yarn test