Getting Started

Installation

# With NPM
npm install @myetherwallet/mewconnect-web-client

Initializing MEWconnect and a Web3 instance using the default node

import MEWconnect from "@myetherwallet/mewconnect-web-client"
import Web3 from "web3"

const CHAIN_ID = 1

// Initialize 
export const mewConnect = new MEWconnect.Provider()

// Initialize a Web3 Provider object
export const ethereum = mewConnect.makeWeb3Provider(CHAIN_ID)

// Initialize a Web3 object
export const web3 = new Web3(ethereum)

Alternatively, a node rpc url may be supplied

• Note: only websocket urls are supported.

import MEWconnect from "@myetherwallet/mewconnect-web-client"
import Web3 from "web3"

const ETH_JSONRPC_URL = "wss://mainnet.infura.io/v3/<YOUR_INFURA_API_KEY>"
const CHAIN_ID = 1

// Initialize MEWconnect
export const mewConnect = new MEWconnect.Provider()

// Initialize a Web3 Provider object
export const ethereum = mewConnect.makeWeb3Provider(CHAIN_ID, ETH_JSONRPC_URL)

// Initialize a Web3 object
export const web3 = new Web3(ethereum)

Use EIP-1102 to obtain authorization and get Ethereum accounts

Invoking EIP-1102 will show a QR code dialog if the user's mobile wallet is not already connected to their browser. The following code should run in response to a user-initiated action such as clicking a button to ensure the pop up is not blocked by the browser.

// Use eth_RequestAccounts
ethereum.send("eth_requestAccounts").then((accounts) => {
  console.log(`User's address is ${accounts[0]}`)

})

// Alternatively, you can use ethereum.enable()
ethereum.enable().then((accounts) => {
  console.log(`User's address is ${accounts[0]}`)
})

That's it! Once the connection between the phone and the site is established, the Web3 object (web3) and the Web3 Provider (ethereum) are ready to be used as usual.