Parse Node Arguments with named arguments

parse-arguments.js

function parseArgs(args) {
  let parsed = {};
  try {
    parsed = Object.assign(
      ...args
        .slice(2)
        .reduce((l, r) => {
          if (!Array.isArray(l)) l = [[l, r]];
          else if (r.startsWith('--')) l.push([r]);
          else l[l.length - 1].push(r);
          return l;
        })
        .map(p => ({ [p[0].substring(2)]: p[1] }))
    );
  } catch (e) {
    console.error('Unknown argument passed', e);
  }
  return parsed;
}

const opts = parseArgs(process.argv);

Invoked as:

node parse-arguments --username alexander --password Password1

opts will contain:

{
  username: 'alexander',
  password: 'Password1'
}

That's just an example password, if it matches your real password. Change your password.