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Y.io.xhr = function (uri, options) {
    options = options || {};

    return new Y.Promise(function (resolve, reject) {
        var io = Y.io(url, {
            // reference options directly to avoid insertion of unwanted options
            // into Y.io()
            method: options.method,
            data: options.data,
            headers: options.headers,

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test 123

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Storage

Motivation

There are 3 major types of storage is browsers up to date:

• IndexedDB. The future.
• localStorage. Limited in size and can be observed through the storage event.
• WebSQL. Dropped by the W3C but it's still very present in the wild, with notable platforms like iOS and PhoneGap.

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// AsyncQueue version
YUI().use('async-queue', function (Y) {

  var queue = new Y.AsyncQueue(
    function () {
      queue.pause();
      // Load a widget
      YUI().use('tabview', function (Y) {
        var tabview = new Y.TabView();
        //...

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YUI().use('app', function (Y) {
  
  var MyApp = Y.Base.create('myApp', Y.App, [], {
    
    views: {
      person: {
        type: 'PersonView'
      }
    },
    

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function ArrayPromise() {
  ArrayPromise.superclass.constructor.apply(this, arguments);
}
Y.extend(ArrayPromise, Y.Promise);

Y.Array.each(['each', 'map', 'filter', 'some', 'every', 'reject'], function (method) {
  ArrayPromise.prototype[method] = function () {
    var args = Array.prototype.slice.call(arguments);
    return this.then(function (results) {
      return Y.Array[method].apply(Y.Array, [results].concat(args));

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function async(args, fn) {
  return Y.batch.apply(Y, Y.Array.map(args, function (arg) {
    return new Y.Promise(function (resolve, reject) {
      fn(arg, function (err, result) {
        if (err) {
          reject(err);
        } else {
          resolve(result);
        }
      });

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/**
A Plugin for widgets that use WidgetStdMod which lets you
collapse and expand the bodyNode

@class Plugin.Collapsible
@constructor
@extends Plugin.Base
@param {Object} config Object literal containing plugin configuration options
**/
function Collapsible() {

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var YUI = require('yui').YUI;

var Y = YUI({
    useSync: true,
	modules: {
		promise: {
			fullpath: '../yui3/build/promise/promise-min.js',
			requires: [
				"oop",
				"timers"

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// Inherit from Y.Promise as you would from any other class
function ListPromise() {
    ListPromise.superclass.constructor.apply(this, arguments);
}
Y.extend(ListPromise, Y.Promise, {
    map: function (fn, context) {
        return this.then(function (values) {
            return Y.Array.map(values, fn, context);
        });
    },