Consulta para registrar un usuario.sql

INSERT INTO Users (first_name, last_name, email, pass) values (?,?,?,?)

consulta usada para recuperar el usuario.sql

SELECT * FROM Users WHERE email = ?

Funcion pquery de la variable conn.js

const mysql = require('mysql')
const queries = require('./queries')
var connection = mysql.createConnection({
    host     : 'localhost',
    user     : 'OOOOOOOO',
    password : 'OOOOOOOO',
    database : 'OOOOOOOO'
});

connection.pQuery = (query, values = []) => new Promise((resolve, reject) => {
    const sql = queries[query]
    connection.query(sql, values, (error, results, fields) => {
        if (error) {
            return reject(error)
        }
        resolve({results, fields})
    })
})
module.exports = connection

Hash del password.js

const conn = use('dbConnection')
var bcrypt = require('bcrypt');

var BCRYPT_SALT_ROUNDS = 12;

module.exports = {
    async register (req, res, next) {
        const {name, surname, email, pass} = req.body
        const encrypedPass = await bcrypt.hash(pass, BCRYPT_SALT_ROUNDS)
        try {
            await conn.pQuery('register-user', [name, surname, email, encrypedPass])
        } catch (error) {
            next(error)
        }
        res.locals = {status: 201, message: 'Usuario creado'}
        next()
    }
}

Login.js

const conn = use('dbConnection') // con la function use recupero conexión con la base de datos
var jwt = require('jsonwebtoken');
var bcrypt = require('bcrypt');

module.exports = {
    async login (req, res, next) {
        const {email, pass} = req.body
        let user
        try {
            const selectUser = await conn.pQuery('select-user', [email])
            user = selectUser.results && selectUser.results[0]
            if (!user) {
                res.locals = {status: 403, message: 'Usuario incorrecto'}
                return next()
            }
            const passIsEqual = await bcrypt.compare(pass, user.pass);
            console.log(pass, user.pass)
            if (!passIsEqual) {
                res.locals = {status: 403, message: 'Usuario incorrecto 2'}
                return next()
            }
        } catch (error) {
            return next(error)
        }
        delete user.pass
        delete user.user_id
        const cert = require('fs').readFileSync('certs/localhost.pem').toString()
        const token = jwt.sign(user, cert)
        
        res.locals = {status: 201, message: res.json(token)}
        next()
    }
}