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@@ -1,28 +0,0 @@
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-/**
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- * @license Copyright (c) 2003-2015, CKSource - Frederico Knabben. All rights reserved.
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- * For licensing, see LICENSE.md.
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- */
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-
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-/* globals window */
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-
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-'use strict';
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-
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-/**
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- * An ES6 compatible Promise class, used for deferred and asynchronous computations.
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- *
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- * @class Promise
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- */
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-
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-CKEDITOR.define( function() {
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- // For now we're using the native browser implementation of Promise, an ES6 feature. Just IE is not supporting it so
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- // a polyfill will have to be developed for it.
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- //
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- // http://caniuse.com/#feat=promises
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-
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- /* istanbul ignore next: we expect this to never happen for now, so we'll not have coverage for this */
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- if ( !window.Promise ) {
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- throw new Error( 'The Promise class is not available natively. CKEditor is not compatible with this browser.' );
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- }
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-
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- return window.Promise;
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-} );
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