Update config variables and add nodemailer's ones

helpers/generateToken.js

@@ -1,5 +1,5 @@
 const jwt = require('jsonwebtoken');
-const { jwt_secret } = require('../config/config');
+const { jwtSecret } = require('../config/config');
 
 function generateToken(user) {
 	const payload = {
@@ -11,7 +11,7 @@ function generateToken(user) {
 		expiresIn: '30d',
 	};
 
-	return jwt.sign(payload, jwt_secret, options);
+	return jwt.sign(payload, jwtSecret, options);
 }
 
 exports.generateToken = generateToken;