@lucid-softworks/sliding-window-rate-limit

An exact, keyed sliding-window rate limiter with injected time and retry metadata.

const limiter = new SlidingWindowRateLimiter<string>({
  limit: 100,
  window: 60_000,
});
const decision = limiter.take(userId);

Decisions include allowed, remaining, and millisecond retryAfter.