VYBECODEDDDDDDDDD

src/ratelimit.ts

@@ -0,0 +1,29 @@
+interface Bucket {
+  count: number;
+  resetAt: number;
+}
+
+export class RateLimiter {
+  private buckets = new Map<string, Bucket>();
+
+  constructor(
+    private readonly max: number,
+    private readonly windowMs: number,
+  ) {}
+
+  check(ip: string): boolean {
+    const now = Date.now();
+    if (this.buckets.size > 10_000) this.prune(now);
+    const existing = this.buckets.get(ip);
+    const bucket = existing && existing.resetAt > now ? existing : { count: 0, resetAt: now + this.windowMs };
+    if (!existing || bucket !== existing) this.buckets.set(ip, bucket);
+    bucket.count++;
+    return bucket.count <= this.max;
+  }
+
+  private prune(now: number): void {
+    for (const [ip, bucket] of this.buckets) {
+      if (bucket.resetAt <= now) this.buckets.delete(ip);
+    }
+  }
+}