import { __require as requireGetStyleProperty } from './getStyleProperty.js';

var Style_1;
var hasRequiredStyle;

function requireStyle () {
	if (hasRequiredStyle) return Style_1;
	hasRequiredStyle = 1;

	/**
	 * Copyright (c) 2013-present, Facebook, Inc.
	 *
	 * This source code is licensed under the MIT license found in the
	 * LICENSE file in the root directory of this source tree.
	 *
	 * @typechecks
	 */
	var getStyleProperty = requireGetStyleProperty();
	/**
	 * @param {DOMNode} element [description]
	 * @param {string} name Overflow style property name.
	 * @return {boolean} True if the supplied ndoe is scrollable.
	 */


	function _isNodeScrollable(element, name) {
	  var overflow = Style.get(element, name);
	  return overflow === 'auto' || overflow === 'scroll';
	}
	/**
	 * Utilities for querying and mutating style properties.
	 */


	var Style = {
	  /**
	   * Gets the style property for the supplied node. This will return either the
	   * computed style, if available, or the declared style.
	   *
	   * @param {DOMNode} node
	   * @param {string} name Style property name.
	   * @return {?string} Style property value.
	   */
	  get: getStyleProperty,

	  /**
	   * Determines the nearest ancestor of a node that is scrollable.
	   *
	   * NOTE: This can be expensive if used repeatedly or on a node nested deeply.
	   *
	   * @param {?DOMNode} node Node from which to start searching.
	   * @return {?DOMWindow|DOMElement} Scroll parent of the supplied node.
	   */
	  getScrollParent: function getScrollParent(node) {
	    if (!node) {
	      return null;
	    }

	    var ownerDocument = node.ownerDocument;

	    while (node && node !== ownerDocument.body) {
	      if (_isNodeScrollable(node, 'overflow') || _isNodeScrollable(node, 'overflowY') || _isNodeScrollable(node, 'overflowX')) {
	        return node;
	      }

	      node = node.parentNode;
	    }

	    return ownerDocument.defaultView || ownerDocument.parentWindow;
	  }
	};
	Style_1 = Style;
	return Style_1;
}

export { requireStyle as __require };
//# sourceMappingURL=Style.js.map
