Return JSON
Return JSON directly from a Worker script, useful for building APIs and middleware.
export default {  async fetch(request) {    const data = {      hello: "world",    };
    const json = JSON.stringify(data, null, 2);
    return new Response(json, {      headers: {        "content-type": "application/json;charset=UTF-8",      },    });  },
};
const handler: ExportedHandler = {  async fetch(request: Request) {    const data = {      hello: "world",    };
    const json = JSON.stringify(data, null, 2);
    return new Response(json, {      headers: {        "content-type": "application/json;charset=UTF-8",      },    });  },
};