ckeditor/ckeditor5-utils

/**
 * @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/dom/isnode
 */

/**
 * Checks if the object is a native DOM Node.
 *
 * @param {*} obj
 * @returns {Boolean}
 */
export default function isNode( obj ) {
    if ( obj ) {
        if ( obj.defaultView ) {
            return obj instanceof obj.defaultView.Document;
        } else if ( obj.ownerDocument && obj.ownerDocument.defaultView ) {
            return obj instanceof obj.ownerDocument.defaultView.Node;
        }
    }

    return false;
}