Nextjs Signup Api using MongoDB

import { errorHandler, responseHandler, validateAllOnce } from "../../../utils/common";
import { dbConnect } from "../../../lib/db-connect";
import User from "../../../models/user";
import bcrypt from "bcrypt";

export default async function handler(req, res){

    if(req.method !== "POST"){
        // return error
        errorHandler("Invalid Request Type", res);
    }else{
        try{
            const { name, email, password } = req.body;
            validateAllOnce(req.body);
    
            //create db connection
            await dbConnect();
    
            const hashPassword = await bcrypt.hash(password, 8);
            const user = new User({
                ...req.body,
                password: hashPassword
            });
    
            const saveUser = await user.save();
            if(saveUser){
                const userDoc = saveUser._doc;
                delete userDoc.password;
                responseHandler(userDoc, res, 201);
            }else{
                errorHandler('Something went wrong', res);
            }
        }catch(error){
            errorHandler(error, res);
        }
    }
}