ScriptdrillSleep with a Promise
A JavaScript exercise from Scriptdrill. Solve it with a code editor in your browser that runs your function against example and hidden tests, and it is checked the moment you submit.
The task
Return a Promise that resolves (with `undefined`) after `ms` milliseconds, so callers can write `await sleep(500)`. It must always return a Promise, even for `sleep(0)`. Tests run on a fake clock: `setTimeout`, `clearTimeout` and `Date.now` are simulated, so waits are instant and exact.
What this exercise teaches
The Promise constructor hands you resolve; giving it to setTimeout resolves the Promise when the timer fires. The function always returns the Promise, so sleep(0) still waits for the next timer turn.
A hint if you get stuck
Wrap `setTimeout` in `new Promise((resolve) => ...)` and pass `resolve` as the timer callback.
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