Cloud in class, have all configuration of database.

Cloud.js

const knex = require('knex');

module.exports = class Cloud {
  constructor(enviroment) {
    // Object
    this.knex = knex;

    // Variables
    this.enviroment = enviroment;
  }

  connection() {
    const development = this.development();

    if ((this.enviroment = 'development')) return this.knex(development);
  }

  development() {
    return {
      client: 'sqlite3',
      connection: {
        filename: './model/database/db.sqlite',
      },
      migrations: {
        directory: './model/database/migrations',
      },
      useNullAsDefault: true,
    };
  }
};