trip.core/src/Model.js

Trip core

'use strict';

const ee = require('event-emitter');

class Model {

  constructor() {
    ee(this);
  }

  // Create a generic emit so that when a caller does
  // emitChange(a,b), the listener to the 'change' event
  // will be notified as on('change', function(a,b) {})
  //
  // MDN recommends pushing arguments instead of using
  // Array.slice for optimisation
  emitChange() {
    const applyArgs = ['change'];
    for (let i = 0; i < arguments.length; ++i) {
      applyArgs.push(arguments[i]);
    }
    this.emit.apply(this, applyArgs);
  }

}

module.exports = Model;