npm i cookie-parser 

//server.js

import cookieParser from "cookie-parser";

app.use(cookieParser()); // now we can use req.cookie in application

app.use("/api/v1/auth", auth);

​

//routes/auth.js

import { getMe, login, register } from "../controller/auth.js";

router.post("/register", register);

export default router;

​

//controller/auth.js

const register = asyncHandler(async (req, res, next) => {

   const { name, email, password, role } = req.body;

​

   //Create user.

   const user = await User.create({

      name,

      email,

      password,

      role,

   });

   sendTokenResponse(user, 200, res);

});

​

​

//Section Get token from model,create cookie and send response.

const sendTokenResponse = (user, statusCode, res) => {

   //COMMENT::Create Token

   const token = user.getSignedJwtToken();//object method to get token.

   const options = {

     //expire in how many day we want.

      expires: new Date(Date.now() + process.env.JWT_COOKIE_EXPIRE * 24 * 60 * 60 * 1000),

      httpOnly: true,

   };

   if (process.env.NODE_ENV === "production") {

      options.secure = true;

   }

   res.status(statusCode).cookie("token", token, options).json({ sucess: true, token });

};

​