@lucid-softworks/singleflight

Coalesces concurrent operations with the same key. Settled results are not cached, so the next call starts fresh work.

import { Singleflight } from "@lucid-softworks/singleflight";

const flights = new Singleflight<string>();
const user = await flights.do("user:42", () => loadUser(42));

forget and clear remove deduplication entries without cancelling work.