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node_modules/popper.js/dist/umd/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
  *
@@ -40,7 +40,8 @@ function getStyleComputedProperty(element, property) {
     return [];
   }
   // NOTE: 1 DOM access here
-  var css = getComputedStyle(element, null);
+  var window = element.ownerDocument.defaultView;
+  var css = window.getComputedStyle(element, null);
   return property ? css[property] : css;
 }
 
@@ -130,7 +131,7 @@ function getOffsetParent(element) {
   var noOffsetParent = isIE(10) ? document.body : null;
 
   // NOTE: 1 DOM access here
-  var offsetParent = element.offsetParent;
+  var offsetParent = element.offsetParent || null;
   // Skip hidden elements which don't have an offsetParent
   while (offsetParent === noOffsetParent && element.nextElementSibling) {
     offsetParent = (element = element.nextElementSibling).offsetParent;
@@ -142,9 +143,9 @@ 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);
   }
 
@@ -469,7 +470,11 @@ function isFixed(element) {
   if (getStyleComputedProperty(element, 'position') === 'fixed') {
     return true;
   }
-  return isFixed(getParentNode(element));
+  var parentNode = getParentNode(element);
+  if (!parentNode) {
+    return false;
+  }
+  return isFixed(parentNode);
 }
 
 /**
@@ -757,9 +762,10 @@ function getOffsetRect(element) {
  * @returns {Object} object containing width and height properties
  */
 function getOuterSizes(element) {
-  var styles = getComputedStyle(element);
-  var x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-  var y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);
+  var window = element.ownerDocument.defaultView;
+  var styles = window.getComputedStyle(element);
+  var x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);
+  var y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);
   var result = {
     width: element.offsetWidth + y,
     height: element.offsetHeight + x

node_modules/popper.js/dist/umd/popper.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
  *
@@ -103,7 +103,8 @@ function getStyleComputedProperty(element, property) {
     return [];
   }
   // NOTE: 1 DOM access here
-  var css = getComputedStyle(element, null);
+  var window = element.ownerDocument.defaultView;
+  var css = window.getComputedStyle(element, null);
   return property ? css[property] : css;
 }
 
@@ -191,7 +192,7 @@ function getOffsetParent(element) {
   var noOffsetParent = isIE(10) ? document.body : null;
 
   // NOTE: 1 DOM access here
-  var offsetParent = element.offsetParent;
+  var offsetParent = element.offsetParent || null;
   // Skip hidden elements which don't have an offsetParent
   while (offsetParent === noOffsetParent && element.nextElementSibling) {
     offsetParent = (element = element.nextElementSibling).offsetParent;
@@ -203,9 +204,9 @@ 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);
   }
 
@@ -573,7 +574,11 @@ function isFixed(element) {
   if (getStyleComputedProperty(element, 'position') === 'fixed') {
     return true;
   }
-  return isFixed(getParentNode(element));
+  var parentNode = getParentNode(element);
+  if (!parentNode) {
+    return false;
+  }
+  return isFixed(parentNode);
 }
 
 /**
@@ -753,9 +758,10 @@ function getReferenceOffsets(state, popper, reference) {
  * @returns {Object} object containing width and height properties
  */
 function getOuterSizes(element) {
-  var styles = getComputedStyle(element);
-  var x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-  var y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);
+  var window = element.ownerDocument.defaultView;
+  var styles = window.getComputedStyle(element);
+  var x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);
+  var y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);
   var result = {
     width: element.offsetWidth + y,
     height: element.offsetHeight + x
@@ -1205,6 +1211,57 @@ function applyStyleOnLoad(reference, popper, options, modifierOptions, state) {
   return options;
 }
 
+/**
+ * @function
+ * @memberof Popper.Utils
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Boolean} shouldRound - If the offsets should be rounded at all
+ * @returns {Object} The popper's position offsets rounded
+ *
+ * The tale of pixel-perfect positioning. It's still not 100% perfect, but as
+ * good as it can be within reason.
+ * Discussion here: https://github.com/FezVrasta/popper.js/pull/715
+ *
+ * Low DPI screens cause a popper to be blurry if not using full pixels (Safari
+ * as well on High DPI screens).
+ *
+ * Firefox prefers no rounding for positioning and does not have blurriness on
+ * high DPI screens.
+ *
+ * Only horizontal placement and left/right values need to be considered.
+ */
+function getRoundedOffsets(data, shouldRound) {
+  var _data$offsets = data.offsets,
+      popper = _data$offsets.popper,
+      reference = _data$offsets.reference;
+  var round = Math.round,
+      floor = Math.floor;
+
+  var noRound = function noRound(v) {
+    return v;
+  };
+
+  var referenceWidth = round(reference.width);
+  var popperWidth = round(popper.width);
+
+  var isVertical = ['left', 'right'].indexOf(data.placement) !== -1;
+  var isVariation = data.placement.indexOf('-') !== -1;
+  var sameWidthParity = referenceWidth % 2 === popperWidth % 2;
+  var bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1;
+
+  var horizontalToInteger = !shouldRound ? noRound : isVertical || isVariation || sameWidthParity ? round : floor;
+  var verticalToInteger = !shouldRound ? noRound : round;
+
+  return {
+    left: horizontalToInteger(bothOddWidth && !isVariation && shouldRound ? popper.left - 1 : popper.left),
+    top: verticalToInteger(popper.top),
+    bottom: verticalToInteger(popper.bottom),
+    right: horizontalToInteger(popper.right)
+  };
+}
+
+var isFirefox = isBrowser && /Firefox/i.test(navigator.userAgent);
+
 /**
  * @function
  * @memberof Modifiers
@@ -1235,15 +1292,7 @@ function computeStyle(data, options) {
     position: popper.position
   };
 
-  // Avoid blurry text by using full pixel integers.
-  // For pixel-perfect positioning, top/bottom prefers rounded
-  // values, while left/right prefers floored values.
-  var offsets = {
-    left: Math.floor(popper.left),
-    top: Math.round(popper.top),
-    bottom: Math.round(popper.bottom),
-    right: Math.floor(popper.right)
-  };
+  var offsets = getRoundedOffsets(data, window.devicePixelRatio < 2 || !isFirefox);
 
   var sideA = x === 'bottom' ? 'top' : 'bottom';
   var sideB = y === 'right' ? 'left' : 'right';