Parsing MySQL TINYINT to Boolean using Bookshelf NodeJS

basemodel.js

'use strict';

const _ = require('lodash');
const bookshelf = require('../bookshelf');

const model = bookshelf.Model.extend(
    {
        parse: function (attrs) {
            _.forEach(this.booleanFields || [], (field) => {
                attrs[field] = !!attrs[field];
            });
            return attrs;
        }
    }, {})
;

module.exports = bookshelf.model('BaseModel', model);

user.js

'use strict';

const bookshelf = require('../bookshelf');
require('./basemodel');

const user = bookshelf.model('BaseModel').extend(
    {
        tableName:     'user',
        hasTimestamps: ['creation_date', 'update_date'],
        booleanFields: ['is_active', 'is_synchronized']
    },
    {}
);

module.exports = bookshelf.model('user', user);

user.sql

CREATE TABLE IF NOT EXISTS user (
  id bigint(20) NOT NULL AUTO_INCREMENT,
  creation_date datetime DEFAULT NULL,
  update_date datetime DEFAULT NULL,  
  email varchar(255) NOT NULL,
  first_name varchar(50) DEFAULT NULL,
  last_name varchar(50) DEFAULT NULL,
  is_active tinyint(1) DEFAULT NULL,
  is_synchronized tinyint(1) DEFAULT NULL
  
  -- keys
  PRIMARY KEY (id),
  UNIQUE KEY idx_user_email (email)
) ENGINE=InnoDB;