Function createSingleFlightHeaders

packages/start/src/fns/handler.ts:200–234

(sourceEvent: FetchEvent)

let App: any;
export function createSingleFlightHeaders(sourceEvent: FetchEvent) {
  // cookie handling logic is pretty simplistic so this might be imperfect
  // unclear if h3 internals are available on all platforms but we need a way to
  // update request headers on the underlying H3 event.

  const headers = new Headers(sourceEvent.request.headers);
  const cookies = parseCookies(sourceEvent.nativeEvent);
  const SetCookies = sourceEvent.response.headers.getSetCookie();
  headers.delete("cookie");
  // let useH3Internals = false;
  // if (sourceEvent.nativeEvent.node?.req) {
  // 	useH3Internals = true;
  // 	sourceEvent.nativeEvent.node.req.headers.cookie = "";
  // }
  SetCookies.forEach(cookie => {
    if (!cookie) return;
    const { maxAge, expires, name, value } = parseSetCookie(cookie);
    if (maxAge != null && maxAge <= 0) {
      delete cookies[name];
      return;
    }
    if (expires != null && expires.getTime() <= Date.now()) {
      delete cookies[name];
      return;
    }
    cookies[name] = value;
  });
  Object.entries(cookies).forEach(([key, value]) => {
    headers.append("cookie", `${key}=${value}`);
    // useH3Internals &&
    // 	(sourceEvent.nativeEvent.node.req.headers.cookie += `${key}=${value};`);
  });

  return headers;
}
async function handleSingleFlight(sourceEvent: FetchEvent, result: any): Promise<Response> {
  let revalidate: string[];
  let url = new URL(sourceEvent.request.headers.get("referer")!).toString();