React Native 如何获取 cookie

Question

I have a cookie-based auth system, and I don't understand how to get cookie from react native/expo. I use js-cookie library for managing cookie.

The request method:

async  postData(url = '', data) {
      // Default options are marked with *
      const response = await fetch(url, {
        method: 'POST', // *GET, POST, PUT, DELETE, etc.
        mode: 'cors', // no-cors, *cors, same-origin
        cache: 'no-cache', // *default, no-cache, reload, force-cache, only-if-cached
        credentials: 'same-origin', // include, *same-origin, omit
        headers: {
          'Content-Type': 'application/json',
          "CSRF-Token": Cookies.get("XSRF-TOKEN")
        },
        redirect: 'follow', // manual, *follow, error
        referrerPolicy: 'no-referrer', // no-referrer, *no-referrer-when-downgrade, origin, origin-when-cross-origin, same-origin, strict-origin, strict-origin-when-cross-origin, unsafe-url
        body: JSON.stringify({data}) // body data type must match "Content-Type" header
      });

      return response.json(); // parses JSON response into native JavaScript objects
}

when I consoloe.log(Cookies.get("XSRF-TOKEN")) it shows undefined .

This is my express backend:

app.use(csrf({cookie: true}))
app.use("*", (req, res, next)=>{
    res.cookie("XSRF-TOKEN", req.csrfToken());
    next();
})

Answer 1

To get cookies in an expo project, you will first have to eject and then you can access the cookies for Android and iOS separately, as expo does not have any module that can help you get cookies.