0x-launch-kit-frontend

This is an example implementation of a dApp that interacts with a 0x relayer. To use it, you need to have the URL of an existing relayer, or you can start one locally for use during development.

This repo ships with both an ERC-20 token trading interface and an ERC-721 marketplace interface.

ERC-20	ERC-721

Usage

Clone this repository and install its dependencies:

git clone [email protected]:0xProject/0x-launch-kit-frontend.git
cd 0x-launch-kit-frontend
yarn

Using an existing relayer

If you have the URL of an existing relayer, you can use this frontend against it. After installing the dependencies, start the application with this command, replacing RELAYER_URL with the proper value:

REACT_APP_RELAYER_URL='https://RELAYER_URL/api/v2' yarn start

A browser tab will open in the http://localhost:3001 address. You'll need to connect MetaMask to the network used by the relayer.

You can optionally pass in any relayer endpoint that complies with the 0x Standard Relayer API. For example, if you want to mirror Kovan liquidity from Radar Relay:

REACT_APP_RELAYER_URL='https://api.kovan.radarrelay.com/0x/v2' REACT_APP_NETWORK_ID=42 yarn start

These commands start the app in development mode. You can run yarn build to build the assets. The results will be in the build directory. Remember to set the environment variable with the relayer URL when running the build command:

REACT_APP_RELAYER_URL='https://RELAYER_URL/api/v2' yarn build
serve ./build

Creating a relayer for development

If you don't have a relayer, you can start one locally for development. First create a docker-compose.yml file like this:

version: '3'
services:
    ganache:
        image: fvictorio/0x-ganache-testing:0.0.1
        ports:
            - '8545:8545'
    launch-kit:
        image: fvictorio/0x-launch-kit-testing
        environment:
            HTTP_PORT: '3000'
            RPC_URL: 'http://ganache:8545'
            NETWORK_ID: '50'
        ports:
            - '3000:3000'
        depends_on:
            - ganache

and then run docker-compose up. This will create two containers: one has a ganache with the 0x contracts deployed and some test tokens, and the other one has an instance of the launch kit implementation of a relayer that connects to that ganache.

After starting those containers, you can run yarn start in another terminal. A browser tab will open in the http://localhost:3001 address. You'll need to connect MetaMask to localhost:8545.

Note: the state of the relayer will be kept between runs. If you want to start from scratch, use docker-compose up --force-recreate

Environment variables

You can create a .env file to set environment variables and configure the behavior of the dApp. Start by copying the example file (cp .env.example .env) and modify the ones you want. Some things you can configure are:

• REACT_APP_RELAYER_URL: The URL of the relayer used by the dApp. Defaults to http://localhost:3001/api/v2

Check .env.example for the full list.

Using custom themes

If you want to add your own theme for the app, please read the THEMES.md file