Timer

Timer functions for callback-style scheduling.

Callback Style

setTimeout / clearTimeout

const id = setTimeout(() => {
  console.log("runs after 1 second");
}, 1000);

clearTimeout(id); // cancel

setInterval / clearInterval

const id = setInterval(() => {
  console.log("runs every second");
}, 1000);

clearInterval(id); // stop

Async / Sync Waiting

Rong.sleep(delay?)

Asynchronously waits for a number of milliseconds or until a target Date.

await Rong.sleep(100);
await Rong.sleep(new Date(Date.now() + 500));

Use this on hot runtime paths, in request handling, and anywhere blocking the current JS thread would be undesirable.

Rong.sleepSync(delay?)

Synchronously blocks the current JS thread for the given number of milliseconds.

Rong.sleepSync(25);

Use this only in tests, short scripts, startup-time work, or other paths where blocking is acceptable.