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This library offers a fetch wrapper that retain cookies. This library also provides a simple cookiejar;

Why the name ? because I didn’t want to reserve the cookiejar name, since this library may not be good at it. (But I hope you like it)

Did you like this ? Take a look at our other library, you may like that as well:


you can import Cookie, CookieJar, wrapFetch from mod.ts file.

import {
} from "";


// this simple
const fetch = wrapFetch();


// you can also pass your own cookiejar to wrapFetch to save/load your cookies
const cookieJar = new CookieJar();
// Now use this fetch and any cookie that is set will be sent with your next requests automatically
const fetch = wrapFetch({ cookieJar });
// and you can read your cookies from the jar
  name: "cookieName",
})?.value; // your cookie value

You can play around with it too see what it has to offer!

cookies should only be sent to their corresponding domains automatically.

Secure cookies will not be sent over unsecure connections.

you can create cookies in two ways:

// first: using Cookie constructor with CookieOptions
const cookie = new Cookie({
  name: "foo",
  value: "bar",
// second:
const cookie = Cookie.from("foo=bar;"); // any string from Set-Cookie header value is also valid.


const cookieJar = new CookieJar();

also if you have cookies from before:

const cookieJar = new CookieJar(cookiesArray); // cookiesArray: Array<Cookie> | Array<CookieOptions>

Note on retrieving cookies (+v2.0.0)

You can get cookies using either CookieOptions or a Cookie itself. The difference is if you use CookieOptions, it will strictly check any prop that is passed against the cookie. But if you use a Cookie object, it will only check name, path and domain.

Each cookie object is easily serialized and deserialized. Example:

const exampleOption = { name: "foo", value: "bar" };

const myCookie = new Cookie(exampleOption);

new Cookie(
).toString() === myCookie.toString(); // true

JSON serializing CookieJar

You can even easily serialize your CookierJar. Example:

const exampleOption = { name: "foo", value: "bar" };

const myCookie = new Cookie(exampleOption);

const cookieJar = new CookieJar([myCookie]);

new CookieJar(
).cookies[0].toString() === myCookie.toString(); // true


fetch wrapper tests require network access to emulate server.

run with deno test --allow-net


This library is only tested lightly. you can contribute to this if you want to make it better, but I probably won’t add much feature/test anymore.

This library does not strictly follow the specs, but does try to follow it loosely. just keep it in mind when using so you don’t get surprises.

does not support handling of __Secure- and __Host- cookies.