Express doesn’t set a cookie

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I had the same issue. The server response comes with cookie set:

Set-Cookie:my_cookie=HelloWorld; Path=/; Expires=Wed, 15 Mar 2017 15:59:59 GMT

But the cookie was not saved by a browser.

This is how I solved it.

I use fetch in a client-side code. If you do not specify credentials: 'include' in fetch options, cookies are neither sent to server nor saved by a browser, although the server response sets cookies.

Example:

var headers = new Headers();
headers.append('Content-Type', 'application/json');
headers.append('Accept', 'application/json');

return fetch('/your/server_endpoint', {
    method: 'POST',
    mode: 'same-origin',
    redirect: 'follow',
    credentials: 'include', // Don't forget to specify this if you need cookies
    headers: headers,
    body: JSON.stringify({
        first_name: 'John',
        last_name: 'Doe'
    })
})

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