tencent cloud

const headers = new Headers(init?: object | Array<[string, string]> | Headers);

headers.append(name: string, value: string): void;

headers.delete(name: string): void;

headers.entries(): iterator;

headers.forEach(callback: (name: string, value: string) => void | number): void;

headers.get(name: string): string;

headers.getSetCookie(): Array<string>

headers.has(name: string): boolean;

headers.keys(): iterator;

headers.set(name: string, value: string): void;

headers.values(): iterator;

function handleEvent() {
  const headers = new Headers({
    'my-header-x': 'hello world',
  });

  const response =  new Response('hello world', {
    headers,
  });
  return response;
}

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