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Optimized Atomcms daily updated/node_modules/popper.js/src/utils/getScroll.js

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+/**
+ * Gets the scroll value of the given element in the given side (top and left)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {String} side `top` or `left`
+ * @returns {number} amount of scrolled pixels
+ */
+export default function getScroll(element, side = 'top') {
+  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';
+  const nodeName = element.nodeName;
+
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    const html = element.ownerDocument.documentElement;
+    const scrollingElement = element.ownerDocument.scrollingElement || html;
+    return scrollingElement[upperSide];
+  }
+
+  return element[upperSide];
+}