import { delay } from "https://deno.land/std@0.223.0/async/delay.ts";

// ...
const delayedPromise = delay(100);
const result = await delayedPromise;
// ...

To allow the process to continue to run as long as the timer exists.

import { delay } from "https://deno.land/std@0.223.0/async/delay.ts";

// ...
await delay(100, { persistent: false });
// ...