bcrypt.js

var bcrypt = require('bcryptjs');

function hashPassword(plainTextPassword) {
    return new Promise(function(resolve, reject) {
        bcrypt.genSalt(function(err, salt) {
            if (err) {
                return reject(err);
            }
            // console.log(salt);
            bcrypt.hash(plainTextPassword, salt, function(err, hash) {
                if (err) {
                    return reject(err);
                }
                // console.log(hash);
                resolve(hash);
            });
        });
    });
}

function checkPassword(textEnteredInLoginForm, hashedPasswordFromDatabase) {
    return new Promise(function(resolve, reject) {
        bcrypt.compare(textEnteredInLoginForm, hashedPasswordFromDatabase, function(err, doesMatch) {
            if (err) {
                reject(err);
            } else {
                resolve(doesMatch);
            }
        });
    });
}

module.exports.hashPassword = hashPassword;
module.exports.checkPassword = checkPassword;