docs/docs/guides/15_web3_upgrade_guide/accounts_migration_guide.md
In 1.x the create method has an optional parameter entropy.
In 4.x the create method does not have entropy as a parameter. Instead 4.x uses an audited package ethereum-cryptography/secp256k1 to generate private keys.
Accounts:
// In 1.x
const account = web3.eth.accounts.create('optionalEntropy'); // entropy is an optional parameter
// In 4.x
const account = web3.eth.accounts.create('optionalEntropy'); // will result in an error
const account = web3.eth.accounts.create(); // correct way
Wallets:
// In 1.x
const wallet = web3.eth.accounts.wallet.create(1, 'optionalEntropy'); // entropy is an optional parameter
// In 4.x
const account = web3.eth.accounts.wallet.create(1, 'optionalEntropy'); // will result in an error
const account = web3.eth.accounts.wallet.create(); // correct way
In 1.x stripHexPrefix method is located in the web3-utils package, in 4.x this has been moved to web3-eth-accounts
import { stripHexPrefix } from 'web3-eth-accounts';
console.log(stripHexPrefix('0x123')); // "123"