Authenticating with Passport.JS using jQuery doesn't store cookies

I have a frontend which is an Electron app and a backend written in Node. When I hit login button my app sends Ajax POST request to my backend, which returns that authentication was successful. When I try to get if user is authenticated using req.isAuthenticated() I get false. It could be because my frontend domain (file://some/path/.../...) differs from backend domain (https://somewhere.on.georgenet.gq) (These are just examples)