类型错误：回调不是 function，“node_modules\jsonwebtoken\sign.js:101:14)”

Question

When I perform a registration action in Postman, I have the following error in the console:

Error:

TypeError: callback is not a function, node_modules\jsonwebtoken\sign.js:101:14)

Problem is in this line:

const token = jwt.sign({name, email, password}, process.env.JWT_SECRET, process.env.JWT_ACCOUNT_ACTIVATION, {expiresIn: '10m'});

controllers/auth

const User = require('../models/user');
const jwt = require('jsonwebtoken');

exports.signup =  (req, res) => {
    const {name, email, password} = req.body;

    User.findOne({email}).exec((err, user) => {
        if (user) {
            return res.status(400).json({
                error: "Email is taken"
            })
        }

        const token = jwt.sign({name, email, password}, process.env.JWT_SECRET, process.env.JWT_ACCOUNT_ACTIVATION, {expiresIn: '10m'});
    });
};

Updated

When I deleted process.env.JWT_SECRET , it works. Do I have to use process.env.JWT_SECRET ?

Answer 1

Swap process.env.JWT_SECRET's position with process.env.JWT_ACCOUNT and vice versa

Answer 2

jwt.sign basically accept four parameter

• payload
• secret
• options
• callback function

if you change the order in that case you will get this error