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gaia/apps/settings/js/modules/defer.js

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+/**
+ * Defer is a factory that would create a wrapped Promise object with exposed
+ * resolve / reject API so that we can easily resolve / reject promise from
+ * outside.
+ *
+ * This is mostly useful when you are going to queue promises for later use.
+ *
+ * API:
+ * 
+ * var defer = Defer();
+ * defer.resolve('return value');
+ * defer.reject('reason')
+ *
+ * @module Defer
+ */
+define(function(require) {
+  'use strict';
+
+  var Defer = function() {
+    this.promise = new Promise((resolve, reject) => {
+      this.resolve = resolve;
+      this.reject = reject;
+    });
+  };
+
+  return function ctor_defer() {
+    return new Defer();
+  };
+});