transition-manager/lib/common/promiseFacade.js

Transition Manager. Framework independent transition manager to transition elements using states and actions.

'use strict';

Object.defineProperty(exports, '__esModule', {
	value: true
});

/**
 * Deffer the promise 
 * @return {object} { resolve : function, reject : function }
 */
exports.Deferred = Deferred;

/**
 * create a facad for es6-promise all
 * ovrridden facad to display error logs for development 
 * due to es6-promise error suppression issue
 * @param  {array}   promises 
 * @return {function} 
 */
exports.all = all;

var _es6Promise = require('es6-promise');

/**
 * Promise facad object
 * creates a facad for application promises, 
 * detatches feom the library being used to serve promises to the app
 * @type {Object}
 */
var PromiseFacade = {};
function Deferred() {
	var result = {};
	result.promise = new _es6Promise.Promise(function (resolve, reject) {
		result.resolve = resolve;
		result.reject = reject;
	});
	return result;
}

function all() {
	var _arguments = arguments;

	var externalError = undefined,
	    error = function error(e) {
		console.error(' --- PROMISE CAUGHT ERROR --- ', _arguments[0].stack, e);
		if (externalError) {
			externalError('es6-promise all error ', _arguments[0].stack, e);
		}
	};

	return (function () {
		var all = _es6Promise.Promise.all(_arguments[0]);
		return {
			then: function then() {
				externalError = arguments[1];
				all.then(arguments[0])['catch'](error);
			}
		};
	})(arguments);
}

/**
 * return object getters
 * 
 * - all - checks to see if all promises has completed before continuing
 * - Promise - returns a Promise
 * - Deferred - returns an un resolved promise and an object with the resolve and reject functions
 * @return {function}   [description]
 */
Object.defineProperty(PromiseFacade, 'all', { get: function get() {
		return all;
	} });
Object.defineProperty(PromiseFacade, 'Promise', { get: function get() {
		return _es6Promise.Promise;
	} });
Object.defineProperty(PromiseFacade, 'Deferred', { get: function get() {
		return Deferred;
	} });

/* export defaults */
exports['default'] = PromiseFacade;