text: const letters = ["a", "b", "c", "d", "e", "f", "g", "i", "j"];
  const routes = ["index.html", ...letters];
  
  export default {
    *[Symbol.asyncIterator]() {
      yield* routes;
    },
  
    "index.html": letters
      .map((letter) => `<li><a href="${letter}">${letter}</a></li>`)
      .join(""),
  
    secret: "You have found the secret page!",
  
    async get(key) {
      return this[key] || `Hello, ${key}.`;
    },
  
    // TODO: Get this key from web package.
    ".keys.json": JSON.stringify(routes, null, 2),
  };
  