Check Node Version from package.json file vs runtime

checkVersion.js

// source: https://stackoverflow.com/questions/29349684/how-can-i-specify-the-required-node-js-version-in-package-json

import semver from 'semver';
import { engines } from './package';

const version = engines.node;
if (!semver.satisfies(process.version, version)) {
  console.log(`Required node version ${version} not satisfied with current version ${process.version}.`);
  process.exit(1);
}