dist

dist/js/bootstrap.bundle.js

@@ -1379,7 +1379,7 @@ var Collapse = function ($$$1) {
 
 /**!
  * @fileOverview Kickass library to create and place poppers near their reference elements.
- * @version 1.12.5
+ * @version 1.12.6
  * @license
  * Copyright (c) 2016 Federico Zivolo and contributors
  *
@@ -1401,22 +1401,7 @@ var Collapse = function ($$$1) {
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-var nativeHints = ['native code', '[object MutationObserverConstructor]'];
-
-/**
- * Determine if a function is implemented natively (as opposed to a polyfill).
- * @method
- * @memberof Popper.Utils
- * @argument {Function | undefined} fn the function to check
- * @returns {Boolean}
- */
-var isNative = (function (fn) {
-  return nativeHints.some(function (hint) {
-    return (fn || '').toString().indexOf(hint) > -1;
-  });
-});
-
-var isBrowser = typeof window !== 'undefined';
+var isBrowser = typeof window !== 'undefined' && typeof window.document !== 'undefined';
 var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
 var timeoutDuration = 0;
 for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {
@@ -1427,26 +1412,16 @@ for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {
 }
 
 function microtaskDebounce(fn) {
-  var scheduled = false;
-  var i = 0;
-  var elem = document.createElement('span');
-
-  // MutationObserver provides a mechanism for scheduling microtasks, which
-  // are scheduled *before* the next task. This gives us a way to debounce
-  // a function but ensure it's called *before* the next paint.
-  var observer = new MutationObserver(function () {
-    fn();
-    scheduled = false;
-  });
-
-  observer.observe(elem, { attributes: true });
-
+  var called = false;
   return function () {
-    if (!scheduled) {
-      scheduled = true;
-      elem.setAttribute('x-index', i);
-      i = i + 1; // don't use compund (+=) because it doesn't get optimized in V8
+    if (called) {
+      return;
     }
+    called = true;
+    Promise.resolve().then(function () {
+      called = false;
+      fn();
+    });
   };
 }
 
@@ -1463,11 +1438,7 @@ function taskDebounce(fn) {
   };
 }
 
-// It's common for MutationObserver polyfills to be seen in the wild, however
-// these rely on Mutation Events which only occur when an element is connected
-// to the DOM. The algorithm used in this module does not use a connected element,
-// and so we must ensure that a *native* MutationObserver is available.
-var supportsNativeMutationObserver = isBrowser && isNative(window.MutationObserver);
+var supportsMicroTasks = isBrowser && window.Promise;
 
 /**
 * Create a debounced version of a method, that's asynchronously deferred
@@ -1478,7 +1449,7 @@ var supportsNativeMutationObserver = isBrowser && isNative(window.MutationObserv
 * @argument {Function} fn
 * @returns {Function}
 */
-var debounce = supportsNativeMutationObserver ? microtaskDebounce : taskDebounce;
+var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;
 
 /**
  * Check if the given variable is a function
@@ -1531,10 +1502,18 @@ function getParentNode(element) {
  */
 function getScrollParent(element) {
   // Return body, `getScroll` will take care to get the correct `scrollTop` from it
-  if (!element || ['HTML', 'BODY', '#document'].indexOf(element.nodeName) !== -1) {
+  if (!element) {
     return window.document.body;
   }
 
+  switch (element.nodeName) {
+    case 'HTML':
+    case 'BODY':
+      return element.ownerDocument.body;
+    case '#document':
+      return element.body;
+  }
+
   // Firefox want us to check `-x` and `-y` variations as well
 
   var _getStyleComputedProp = getStyleComputedProperty(element),
@@ -1562,6 +1541,10 @@ function getOffsetParent(element) {
   var nodeName = offsetParent && offsetParent.nodeName;
 
   if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {
+    if (element) {
+      return element.ownerDocument.documentElement;
+    }
+
     return window.document.documentElement;
   }
 
@@ -1657,8 +1640,8 @@ function getScroll(element) {
   var nodeName = element.nodeName;
 
   if (nodeName === 'BODY' || nodeName === 'HTML') {
-    var html = window.document.documentElement;
-    var scrollingElement = window.document.scrollingElement || html;
+    var html = element.ownerDocument.documentElement;
+    var scrollingElement = element.ownerDocument.scrollingElement || html;
     return scrollingElement[upperSide];
   }
 
@@ -1907,7 +1890,7 @@ function getOffsetRectRelativeToArbitraryNode(children, parent) {
 }
 
 function getViewportOffsetRectRelativeToArtbitraryNode(element) {
-  var html = window.document.documentElement;
+  var html = element.ownerDocument.documentElement;
   var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);
   var width = Math.max(html.clientWidth, window.innerWidth || 0);
   var height = Math.max(html.clientHeight, window.innerHeight || 0);
@@ -1968,10 +1951,10 @@ function getBoundaries(popper, reference, padding, boundariesElement) {
     if (boundariesElement === 'scrollParent') {
       boundariesNode = getScrollParent(getParentNode(popper));
       if (boundariesNode.nodeName === 'BODY') {
-        boundariesNode = window.document.documentElement;
+        boundariesNode = popper.ownerDocument.documentElement;
       }
     } else if (boundariesElement === 'window') {
-      boundariesNode = window.document.documentElement;
+      boundariesNode = popper.ownerDocument.documentElement;
     } else {
       boundariesNode = boundariesElement;
     }
@@ -2212,10 +2195,11 @@ function runModifiers(modifiers, data, ends) {
   var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));
 
   modifiersToRun.forEach(function (modifier) {
-    if (modifier.function) {
+    if (modifier['function']) {
+      // eslint-disable-line dot-notation
       console.warn('`modifier.function` is deprecated, use `modifier.fn`!');
     }
-    var fn = modifier.function || modifier.fn;
+    var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation
     if (modifier.enabled && isFunction(fn)) {
       // Add properties to offsets to make them a complete clientRect object
       // we do this before each modifier to make sure the previous one doesn't
@@ -2342,9 +2326,19 @@ function destroy() {
   return this;
 }
 
+/**
+ * Get the window associated with the element
+ * @argument {Element} element
+ * @returns {Window}
+ */
+function getWindow(element) {
+  var ownerDocument = element.ownerDocument;
+  return ownerDocument ? ownerDocument.defaultView : window;
+}
+
 function attachToScrollParents(scrollParent, event, callback, scrollParents) {
   var isBody = scrollParent.nodeName === 'BODY';
-  var target = isBody ? window : scrollParent;
+  var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;
   target.addEventListener(event, callback, { passive: true });
 
   if (!isBody) {
@@ -2362,7 +2356,7 @@ function attachToScrollParents(scrollParent, event, callback, scrollParents) {
 function setupEventListeners(reference, options, state, updateBound) {
   // Resize event listener on window
   state.updateBound = updateBound;
-  window.addEventListener('resize', state.updateBound, { passive: true });
+  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });
 
   // Scroll event listener on scroll parents
   var scrollElement = getScrollParent(reference);
@@ -2393,7 +2387,7 @@ function enableEventListeners() {
  */
 function removeEventListeners(reference, state) {
   // Remove resize event listener on window
-  window.removeEventListener('resize', state.updateBound);
+  getWindow(reference).removeEventListener('resize', state.updateBound);
 
   // Remove scroll event listener on scroll parents
   state.scrollParents.forEach(function (target) {
@@ -3695,8 +3689,8 @@ var Popper = function () {
     };
 
     // get reference and popper elements (allow jQuery wrappers)
-    this.reference = reference.jquery ? reference[0] : reference;
-    this.popper = popper.jquery ? popper[0] : popper;
+    this.reference = reference && reference.jquery ? reference[0] : reference;
+    this.popper = popper && popper.jquery ? popper[0] : popper;
 
     // Deep merge modifiers options
     this.options.modifiers = {};