App is getting crashed on duplicate response, Error is not catched - node.js

Question

I need to Add a user I created this Auth.js File while hitting this endpoint from thunderclient the error must me catched and a res.json must be sent which is not happening what should i do:
Auth.js
const express=require('express');
const User = require('../models/User');
const router=express.Router();
const { body, validationResult } = require('express-validator');
router.post('/',[
body('email').isEmail(),
body('name').isLength({ min: 5 }),
body('password').isLength({ min: 5 })
], async (req, res)=>{
try{
const errors = validationResult(req);
if (!errors.isEmpty()) {
return res.status(400).json({ errors: errors.array() });
}
User.create({
name: req.body.name,
password: req.body.password,
email: req.body.email
}).then(user => res.json(user));
}
catch(errors) {
console.error(errors)
res.json({error:'Please Use A Unique Value'})
}
})
module.exports = router

Answer 1

Since you're not making async operations in your router, express is ignoring errors returned from your router.post method as it is being treated as a promise.
You need to remove async keyword and make your route synchronous:
const express=require('express');
const User = require('../models/User');
const router=express.Router();
const { body, validationResult } = require('express-validator');
router.post('/',[
body('email').isEmail(),
body('name').isLength({ min: 5 }),
body('password').isLength({ min: 5 })
], (req, res)=>{ // removed async keyword
try{
const errors = validationResult(req);
if (!errors.isEmpty()) {
return res.status(400).json({ errors: errors.array() });
}
User.create({
name: req.body.name,
password: req.body.password,
email: req.body.email
}).then(user => res.json(user));
}
catch(errors) {
console.error(errors)
res.json({error:'Please Use A Unique Value'})
}
})