RetrieveJWT.js

const cookieParser = require('cookie-parser');
const jwt = require('jwt');

app.get('/checkLogin', (req, res) => {
	const token = cookieParser.signedCookie(req.signedCookies['x-access-token'], process.env.COOKIE_SECRET_KEY);
	jwt.verify(token, process.env.SECRET_KEY, function (err, decoded) {
		if (err) {
			throw new Error(err);
		}
		return res.status(200).json({ message: 'JWT VERFIED' });
	});
});