var Scroll_1;
var hasRequiredScroll;

function requireScroll () {
	if (hasRequiredScroll) return Scroll_1;
	hasRequiredScroll = 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.
	 *
	 */

	/**
	 * @param {DOMElement} element
	 * @param {DOMDocument} doc
	 * @return {boolean}
	 */
	function _isViewportScrollElement(element, doc) {
	  return !!doc && (element === doc.documentElement || element === doc.body);
	}
	/**
	 * Scroll Module. This class contains 4 simple static functions
	 * to be used to access Element.scrollTop/scrollLeft properties.
	 * To solve the inconsistencies between browsers when either
	 * document.body or document.documentElement is supplied,
	 * below logic will be used to alleviate the issue:
	 *
	 * 1. If 'element' is either 'document.body' or 'document.documentElement,
	 *    get whichever element's 'scroll{Top,Left}' is larger.
	 * 2. If 'element' is either 'document.body' or 'document.documentElement',
	 *    set the 'scroll{Top,Left}' on both elements.
	 */


	var Scroll = {
	  /**
	   * @param {DOMElement} element
	   * @return {number}
	   */
	  getTop: function getTop(element) {
	    var doc = element.ownerDocument;
	    return _isViewportScrollElement(element, doc) ? // In practice, they will either both have the same value,
	    // or one will be zero and the other will be the scroll position
	    // of the viewport. So we can use `X || Y` instead of `Math.max(X, Y)`
	    doc.body.scrollTop || doc.documentElement.scrollTop : element.scrollTop;
	  },

	  /**
	   * @param {DOMElement} element
	   * @param {number} newTop
	   */
	  setTop: function setTop(element, newTop) {
	    var doc = element.ownerDocument;

	    if (_isViewportScrollElement(element, doc)) {
	      doc.body.scrollTop = doc.documentElement.scrollTop = newTop;
	    } else {
	      element.scrollTop = newTop;
	    }
	  },

	  /**
	   * @param {DOMElement} element
	   * @return {number}
	   */
	  getLeft: function getLeft(element) {
	    var doc = element.ownerDocument;
	    return _isViewportScrollElement(element, doc) ? doc.body.scrollLeft || doc.documentElement.scrollLeft : element.scrollLeft;
	  },

	  /**
	   * @param {DOMElement} element
	   * @param {number} newLeft
	   */
	  setLeft: function setLeft(element, newLeft) {
	    var doc = element.ownerDocument;

	    if (_isViewportScrollElement(element, doc)) {
	      doc.body.scrollLeft = doc.documentElement.scrollLeft = newLeft;
	    } else {
	      element.scrollLeft = newLeft;
	    }
	  }
	};
	Scroll_1 = Scroll;
	return Scroll_1;
}

export { requireScroll as __require };
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