Tiny rate-limiter-flexible example compatible with Deno

deno-rate-limiter-flexible-example.ts

import { serve } from "https://deno.land/std/http/server.ts";
import * as RateLimiterFlexible from "https://dev.jspm.io/rate-limiter-flexible";
const rateLimiter = new RateLimiterFlexible.default.RateLimiterMemory({
  points: 2,
  duration: 5,
});

const s = serve({ port: 8000 });
console.log("http://localhost:8000/");
for await (const req of s) {
  rateLimiter.consume('userId', 1)
    .then((rateLimiterRes) => {
      req.respond({ body: "Hello World\n" });
    })
    .catch((rej) => {
      req.respond({status: 429, body: 'Too many ' + rej.consumedPoints})
    });
}