new Request(input: string | Request, initOptions?: RequestInit): Request

// request.body
readonly body: ReadableStream;

// request.bodyUsed
readonly bodyUsed: boolean;

// request.headers
readonly headers: Headers;

// request.method
readonly method: string;

// request.redirect
readonly redirect: string;

// request.maxFollow
readonly maxFollow: number;

// request.url
readonly url: string;

// request.version
readonly version: string;

// request.eo
readonly eo: IncomingRequestEoProperties;

request.arrayBuffer(): Promise<ArrayBuffer>;

request.blob(): Promise<Blob>;

request.clone(copyHeaders?: boolean): Request;

request.formData(): Promise<FormData>;

request.json(): Promise<object>;

request.text(): Promise<string>;

async function handleRequest() {
  const request = new Request('https://www.tencentcloud.com/');
  const response = await fetch(request);
  return response;
}

addEventListener('fetch', (event) => {
  event.respondWith(handleRequest());
});