EOS/Proton mnemonic to private

mnemonic2private.js

const account = require('./account.json');
const hdkey = require('hdkey')
const wif = require('wif')
const ecc = require('eosjs-ecc')
const bip39 = require('bip39')
const eos = require('eosjs')

async function generateKeyPair(mnemonicString){
    
    const seed = await bip39.mnemonicToSeed(mnemonicString)
    const master = hdkey.fromMasterSeed(Buffer(seed, 'hex'))
    const node = master.derive("m/44'/194'/0'/0/0")
    const public = ecc.PublicKey(node._publicKey).toString();
    const private = wif.encode(128, node._privateKey, false);
    const privateStringToKey = eos.Numeric.stringToPrivateKey(private);
    const pvtK1Key = eos.Numeric.privateKeyToString(privateStringToKey);
    console.log("Is generated == key from JSON",pvtK1Key == account.private)
    
}

async function main (){

    await generateKeyPair(account.mnemonic);

}

main();