Simple QRCode generator for Deno Deploy

qr.ts

/**
 * Simple QRCode generator for Deno Deploy
 */
import { qrcode } from "https://deno.land/x/qrcode/mod.ts";

addEventListener("fetch", async (event) => {
  const url = new URL(event.request.url);
  const params = new URLSearchParams(url.search);
  const text = params.get("text");

  if (!text) {
    const response = new Response("text must be specified.", {
      headers: { "content-type": "text/plain" },
    });

    event.respondWith(response);
    return;
  }

  const base64 = await qrcode(text, { size: 1080 });
  const html = `<img src="${base64}" />`;

  const response = new Response(html, {
    headers: { "content-type": "text/html" },
  });

  event.respondWith(response);
});