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import { CookieJar } from "./cookie_jar.ts";import { setHeader } from "./header_utils.ts";
export type WrapFetchOptions = {  /** your own fetch function. defaults to global fetch. This allows wrapping your fetch function multiple times. */  fetch?: typeof fetch;  /** The cookie jar to use when wrapping fetch. Will create a new one if not provided. */  cookieJar?: CookieJar;};
export function wrapFetch(options: WrapFetchOptions) {  const { cookieJar = new CookieJar(), fetch = globalThis.fetch } = options ||    {};
  async function wrappedFetch(    input: string | Request | URL,    init?: RequestInit | undefined,  ) {    // let fetch handle the error    if (!input) {      return await fetch(input);    }    const cookieString = cookieJar.getCookieString(input);    const interceptedInit = init || {};    if (!interceptedInit.headers) {      interceptedInit.headers = new Headers();    }
    setHeader(interceptedInit.headers, "cookie", cookieString);
    const response = await fetch(input, interceptedInit);    response.headers.forEach((value, key) => {      if (key.toLowerCase() === "set-cookie") {        cookieJar.setCookie(value, input);      }    });    return response;  }
  return wrappedFetch;}