here's a real world example I use all the time:

    const wait = (ms = 500) => new Promise(resolve => setTimeout(resolve, ms));

then:

    async function () {
      await wait(1000);
    }

Perhaps it's hard to grok but it sure is a handy one-liner.

Of course in newer versions of node we can now do:

    import {
      setTimeout,
    } from 'timers/promises';

    await setTimeout(100);