kv-test.js

addEventListener("fetch", event => {
  event.respondWith(handleRequest(event.request))
})

let id = 0;
async function handleRequest(request) {
  const params = new URL(request.url).searchParams;

  const mode = params.get("mode") || "0";

  if (mode === "list") {
    const list = await KV.list();
    console.log("LIST: %o", list.keys);
    return new Response(JSON.stringify(list.keys));
  }

  if (mode === "put") {
    await KV.put(id++, "OK");
    console.log("PUT: %s", id);
    return new Response();
  }

  const value = await KV.get(mode);
  console.log("GET: %s => %s", mode, value);
  return new Response(value);
}