Eth Chains

Helper module for getting Ethereum chains info from chainid.network.

Install

yarn add eth-chains

npm install eth-chains

Note on versioning

eth-chains uses a weekly automated release script that updates its chain data. This release script takes breaking changes into account, so breaking changes (e.g. renamed chains) are released as a new major version, while non-breaking changes (e.g. new chains) are released as a new minor version.

Usage

Import chains methods and enums:

import chains, { ChainId, ChainName } from 'eth-chains'

Easily get most popular chains:

import { chain } from 'eth-chains'

console.log(chain.ethereum.rinkeby)

console.log(chain.polygon.mumbai)

Chain names and ids via Enums:

console.log(ChainId.EthereumMainnet) // 1
console.log(ChainId.BinanceSmartChainMainnet) // 56
console.log(ChainName.EthereumMainnet) // "Ethereum Mainnet"
console.log(ChainName.Rinkeby) // "Rinkeby"

Chain by ID:

chains.getById(ChainId.EthereumMainnet) // { name: "Ethereum Mainnet", ..., "infoURL": "https://ethereum.org" }
// Equivalent
chains.getById(1)

Chain by Name:

chains.getByName(ChainName.EthereumMainnet) // { name: "Ethereum Mainnet", ..., "infoURL": "https://ethereum.org" }
// Equivalent
chains.getByName('Ethereum Mainnet')

Get all Chains:

const allChains = chains.all()
// { 1: { name: "Ethereum Mainnet", ..., "infoURL": "https://ethereum.org" }, 2: {...}}

Typescript Types:

import { Chain, NativeCurrency, Explorer } from 'eth-chains'
const ethereum: Chain = chains.getById(ChainId.EthereumMainnet)
ethereum.chain // 'ETH'

---

TODO:

• Add webhook that watches the chains repo and triggers an update to this package whenever that repo gets updated
  • Add check in the deploy script to make sure that the types are correct before publishing
• Add Tests
  • Once quicktype is added, test with different chains.json objects to make sure it can handle new types
• Use quicktype to autogen types from json
• Autogen Chain Id enum
• Autogen Chain Name enum