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position.js
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	import _extends from "@babel/runtime/helpers/esm/extends";
	import css from './css';
	import getOffset from './offset';
	import getOffsetParent from './offsetParent';
	import scrollLeft from './scrollLeft';
	import scrollTop from './scrollTop';

	var nodeName = function nodeName(node) {
	return node.nodeName && node.nodeName.toLowerCase();
	};
	/**
	* Returns the relative position of a given element.
	*
	* @param node the element
	* @param offsetParent the offset parent
	*/


	export default function position(node, offsetParent) {
	var parentOffset = {
	top: 0,
	left: 0
	};
	var offset; // Fixed elements are offset from window (parentOffset = {top:0, left: 0},
	// because it is its only offset parent

	if (css(node, 'position') === 'fixed') {
	offset = node.getBoundingClientRect();
	} else {
	var parent = offsetParent \|\| getOffsetParent(node);
	offset = getOffset(node);
	if (nodeName(parent) !== 'html') parentOffset = getOffset(parent);
	var borderTop = String(css(parent, 'borderTopWidth') \|\| 0);
	parentOffset.top += parseInt(borderTop, 10) - scrollTop(parent) \|\| 0;
	var borderLeft = String(css(parent, 'borderLeftWidth') \|\| 0);
	parentOffset.left += parseInt(borderLeft, 10) - scrollLeft(parent) \|\| 0;
	}

	var marginTop = String(css(node, 'marginTop') \|\| 0);
	var marginLeft = String(css(node, 'marginLeft') \|\| 0); // Subtract parent offsets and node margins

	return _extends({}, offset, {
	top: offset.top - parentOffset.top - (parseInt(marginTop, 10) \|\| 0),
	left: offset.left - parentOffset.left - (parseInt(marginLeft, 10) \|\| 0)
	});
	}