aside.js

// 'aside' - Promise extension
//
// promise.aside(win, fail)
//
// Works in analogous way as promise function itself (or `then`)
// but instead of adding promise to promise chain it returns context promise and
// lets callback carry on with other processing logic

'use strict';

var callable = require('es5-ext/object/valid-callable')
  , deferred = require('../../deferred');

deferred.extend('aside', function (win, fail) {
	((win == null) || callable(win));
	((fail == null) || callable(fail));
	if (win || fail) {
		if (!this.pending) {
			this.pending = [];
		}
		this.pending.push('aside', arguments);
	}
	return this;
}, function (win, fail) {
	var cb = this.failed ? fail : win;
	if (cb) {
		cb(this.value);
	}
}, function (win, fail) {
	var cb;
	((win == null) || callable(win));
	((fail == null) || callable(fail));
	cb = this.failed ? fail : win;
	if (cb) {
		cb(this.value);
	}
	return this;
});