Recover all the account under Mnemonic using ethers.js

Question

I am new using ethers.js

const { Wallet } = require('ethers');
const wallet = Wallet.fromMnemonic('one two three four ...');

I want to use that code to recover all the accounts from that Mnemonic. Maybe it is something that I do not understand quite well but it is just retrieving the first account for that Mnemonic.

How do I recover all the accounts?

Answer 1

The Wallet.fromMnemonic function has a second argument to specify the BIP-32 derivation path. By default it will use m/44'/60'/0'/0/0, but if you want to get the second account, you can use m/44'/60'/0'/0/1 for example:

const { Wallet } = require('ethers');
const wallet = Wallet.fromMnemonic('one two three four ...', `m/44'/60'/0'/0/1`);

Alternatively, you can use the HDNode class to quickly derive child keys from a mnemonic phrase. For example:

const { utils } = require('ethers');
const hdNode = utils.HDNode.fromMnemonic('one two three four ...');

const secondAccount = hdNode.derivePath(`m/44'/60'/0'/0/1`); // This returns a new HDNode
const thirdAccount = hdNode.derivePath(`m/44'/60'/0'/0/2`);

The HDNode can also be used to get an instance of Wallet. This is also what Wallet.fromMnemonic does.

const wallet = new Wallet(hdNode);

Answer 2

In the newer ethers version, this is slightly changed.

const { ethers }  = require('ethers');

const mnemonic = "one two three four .....";
const hdNode = ethers.HDNodeWallet.fromPhrase(mnemonic);

const secondAccount = hdNode.derivePath(`m/44'/60'/0'/0/1`);
const thirdAccount = hdNode.derivePath(`m/44'/60'/0'/0/2`);

console.log(secondAccount.address);
console.log(thirdAccount.address);

Answer 3

If you're struggling to recover all accounts created by Metamask, here is the solution (ethers.js v6):

const ethers = require("ethers");

const phrase = "YOUR_PHRASE";

const mnemonic = ethers.Mnemonic.fromPhrase(phrase);

for (let index = 0; index < 10; index++) {
    const wallet = ethers.HDNodeWallet.fromMnemonic(mnemonic, `m/44'/60'/0'/0/${index}`);
    console.log(wallet.address);
}