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- /**
- * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
- */
- /**
- * @module utils/first
- */
- /**
- * Returns first item of the given `iterable`.
- *
- * @param {Iterable.<*>} iterable
- * @returns {*}
- */
- export default function first( iterable ) {
- const iteratorItem = iterable.next();
- if ( iteratorItem.done ) {
- return null;
- }
- return iteratorItem.value;
- }
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