Ethereum Ðapp Development - Video 2 | Creating Ethereum Keypairs

notes.txt

// package.json
{
  "dependencies": {
    "web3": "0.17.0-alpha",
    "ethereumjs-util": "4.5.0"
  }
}

// keypairs.js
var EthUtil = require("ethereumjs-util")

var hexToBytes = function(hex) {
  for (var bytes = [], c = 0; c < hex.length; c+=2)
  bytes.push(parseInt(hex.substr(c, 2), 16));
  return bytes;
}

var privateKeyToAddress = function(privateKey) {
  return `0x${EthUtil.privateToAddress(hexToBytes(privateKey)).toString('hex')}`
}

console.log(privateKeyToAddress(process.argv[2]))

Missing closing quote on line 10

thanks @agoldvarg -- fixed now.