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node_modules/popper.js/dist/popper-utils.js

@@ -1,6 +1,6 @@
 /**!
  * @fileOverview Kickass library to create and place poppers near their reference elements.
- * @version 1.14.4
+ * @version 1.14.7
  * @license
  * Copyright (c) 2016 Federico Zivolo and contributors
  *
@@ -34,7 +34,8 @@ function getStyleComputedProperty(element, property) {
     return [];
   }
   // NOTE: 1 DOM access here
-  const css = getComputedStyle(element, null);
+  const window = element.ownerDocument.defaultView;
+  const css = window.getComputedStyle(element, null);
   return property ? css[property] : css;
 }
 
@@ -119,7 +120,7 @@ function getOffsetParent(element) {
   const noOffsetParent = isIE(10) ? document.body : null;
 
   // NOTE: 1 DOM access here
-  let offsetParent = element.offsetParent;
+  let offsetParent = element.offsetParent || null;
   // Skip hidden elements which don't have an offsetParent
   while (offsetParent === noOffsetParent && element.nextElementSibling) {
     offsetParent = (element = element.nextElementSibling).offsetParent;
@@ -131,9 +132,9 @@ function getOffsetParent(element) {
     return element ? element.ownerDocument.documentElement : document.documentElement;
   }
 
-  // .offsetParent will return the closest TD or TABLE in case
+  // .offsetParent will return the closest TH, TD or TABLE in case
   // no offsetParent is present, I hate this job...
-  if (['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
+  if (['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
     return getOffsetParent(offsetParent);
   }
 
@@ -448,7 +449,11 @@ function isFixed(element) {
   if (getStyleComputedProperty(element, 'position') === 'fixed') {
     return true;
   }
-  return isFixed(getParentNode(element));
+  const parentNode = getParentNode(element);
+  if (!parentNode) {
+    return false;
+  }
+  return isFixed(parentNode);
 }
 
 /**
@@ -711,9 +716,10 @@ function getOffsetRect(element) {
  * @returns {Object} object containing width and height properties
  */
 function getOuterSizes(element) {
-  const styles = getComputedStyle(element);
-  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);
+  const window = element.ownerDocument.defaultView;
+  const styles = window.getComputedStyle(element);
+  const x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);
+  const y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);
   const result = {
     width: element.offsetWidth + y,
     height: element.offsetHeight + x