simplebar - npm Package Compare versions

Comparing version 4.3.0-alpha.0 to 4.3.0-alpha.1

dist/simplebar.esm.js

 /**
- * SimpleBar.js - v4.3.0-alpha.0
+ * SimpleBar.js - v4.3.0-alpha.1
  * Scrollbars, simpler.
@@ -10,16 +10,12 @@ * https://grsmto.github.io/simplebar/
 
+import 'core-js/modules/es.array.for-each';
+import 'core-js/modules/web.dom-collections.for-each';
+import canUseDOM from 'can-use-dom';
 import 'core-js/modules/es.array.filter';
-import 'core-js/modules/es.array.for-each';
 import 'core-js/modules/es.array.iterator';
-import 'core-js/modules/es.array.reduce';
-import 'core-js/modules/es.function.name';
 import 'core-js/modules/es.object.assign';
 import 'core-js/modules/es.object.to-string';
 import 'core-js/modules/es.parse-int';
-import 'core-js/modules/es.regexp.exec';
 import 'core-js/modules/es.string.iterator';
-import 'core-js/modules/es.string.match';
-import 'core-js/modules/es.string.replace';
 import 'core-js/modules/es.weak-map';
-import 'core-js/modules/web.dom-collections.for-each';
 import 'core-js/modules/web.dom-collections.iterator';
@@ -30,20 +26,33 @@ import throttle from 'lodash.throttle';
 import ResizeObserver from 'resize-observer-polyfill';
-import canUseDOM from 'can-use-dom';
+import 'core-js/modules/es.array.reduce';
+import 'core-js/modules/es.function.name';
+import 'core-js/modules/es.regexp.exec';
+import 'core-js/modules/es.string.match';
+import 'core-js/modules/es.string.replace';
 
+var cachedScrollbarWidth = null;
+var cachedDevicePixelRatio = null;
+window.addEventListener('resize', function () {
+  if (cachedDevicePixelRatio !== window.devicePixelRatio) {
+    cachedDevicePixelRatio = window.devicePixelRatio;
+    cachedScrollbarWidth = null;
+  }
+});
 function scrollbarWidth() {
-  if (typeof document === 'undefined') {
-    return 0;
+  if (cachedScrollbarWidth === null) {
+    if (typeof document === 'undefined' || /AppleWebKit/.test(navigator.userAgent) || 'scrollbarWidth' in document.documentElement.style) {
+      cachedScrollbarWidth = 0;
+      return cachedScrollbarWidth;
+    }
+
+    var body = document.body;
+    var box = document.createElement('div');
+    box.classList.add('simplebar-hide-scrollbar');
+    body.appendChild(box);
+    var width = box.getBoundingClientRect().right;
+    body.removeChild(box);
+    cachedScrollbarWidth = width;
   }
 
-  var body = document.body;
-  var box = document.createElement('div');
-  var boxStyle = box.style;
-  boxStyle.position = 'fixed';
-  boxStyle.left = 0;
-  boxStyle.visibility = 'hidden';
-  boxStyle.overflowY = 'scroll';
-  body.appendChild(box);
-  var width = box.getBoundingClientRect().right;
-  body.removeChild(box);
-  return width;
+  return cachedScrollbarWidth;
 }
@@ -185,2 +194,4 @@
       var scrollbar = _this.axis[_this.draggedAxis].scrollbar;
+      var contentSize = _this.contentWrapperEl[_this.axis[_this.draggedAxis].scrollSizeAttr];
+      var hostSize = parseInt(_this.elStyles[_this.axis[_this.draggedAxis].sizeAttr], 10);
       e.preventDefault();
@@ -198,5 +209,5 @@ e.stopPropagation();
 
-      var dragPerc = dragPos / track.rect[_this.axis[_this.draggedAxis].sizeAttr]; // Scroll the content by the same percentage.
+      var dragPerc = dragPos / (trackSize - scrollbar.size); // Scroll the content by the same percentage.
 
-      var scrollPos = dragPerc * _this.contentWrapperEl[_this.axis[_this.draggedAxis].scrollSizeAttr]; // Fix browsers inconsistency on RTL
+      var scrollPos = dragPerc * (contentSize - hostSize); // Fix browsers inconsistency on RTL
 
@@ -234,15 +245,5 @@ if (_this.draggedAxis === 'x') {
     this.el = element;
-    this.flashTimeout;
-    this.contentEl;
-    this.contentWrapperEl;
-    this.offsetEl;
-    this.maskEl;
-    this.globalObserver;
-    this.mutationObserver;
-    this.resizeObserver;
-    this.scrollbarWidth;
     this.minScrollbarWidth = 20;
-    this.options = Object.assign({}, SimpleBar.defaultOptions, options);
-    this.classNames = Object.assign({}, SimpleBar.defaultOptions.classNames, this.options.classNames);
-    this.isRtl;
+    this.options = Object.assign({}, SimpleBar.defaultOptions, {}, options);
+    this.classNames = Object.assign({}, SimpleBar.defaultOptions.classNames, {}, this.options.classNames);
     this.axis = {
@@ -253,2 +254,3 @@ x: {
         scrollSizeAttr: 'scrollWidth',
+        offsetSizeAttr: 'offsetWidth',
         offsetAttr: 'left',
@@ -267,2 +269,3 @@ overflowAttr: 'overflowX',
         scrollSizeAttr: 'scrollHeight',
+        offsetSizeAttr: 'offsetHeight',
         offsetAttr: 'top',
@@ -324,95 +327,2 @@ overflowAttr: 'overflowY',
 
-  SimpleBar.initHtmlApi = function initHtmlApi() {
-    this.initDOMLoadedElements = this.initDOMLoadedElements.bind(this); // MutationObserver is IE11+
-
-    if (typeof MutationObserver !== 'undefined') {
-      // Mutation observer to observe dynamically added elements
-      this.globalObserver = new MutationObserver(function (mutations) {
-        mutations.forEach(function (mutation) {
-          Array.prototype.forEach.call(mutation.addedNodes, function (addedNode) {
-            if (addedNode.nodeType === 1) {
-              if (addedNode.hasAttribute('data-simplebar')) {
-                !SimpleBar.instances.has(addedNode) && new SimpleBar(addedNode, SimpleBar.getElOptions(addedNode));
-              } else {
-                Array.prototype.forEach.call(addedNode.querySelectorAll('[data-simplebar]'), function (el) {
-                  !SimpleBar.instances.has(el) && new SimpleBar(el, SimpleBar.getElOptions(el));
-                });
-              }
-            }
-          });
-          Array.prototype.forEach.call(mutation.removedNodes, function (removedNode) {
-            if (removedNode.nodeType === 1) {
-              if (removedNode.hasAttribute('data-simplebar')) {
-                SimpleBar.instances.has(removedNode) && SimpleBar.instances.get(removedNode).unMount();
-              } else {
-                Array.prototype.forEach.call(removedNode.querySelectorAll('[data-simplebar]'), function (el) {
-                  SimpleBar.instances.has(el) && SimpleBar.instances.get(el).unMount();
-                });
-              }
-            }
-          });
-        });
-      });
-      this.globalObserver.observe(document, {
-        childList: true,
-        subtree: true
-      });
-    } // Taken from jQuery `ready` function
-    // Instantiate elements already present on the page
-
-
-    if (document.readyState === 'complete' || document.readyState !== 'loading' && !document.documentElement.doScroll) {
-      // Handle it asynchronously to allow scripts the opportunity to delay init
-      window.setTimeout(this.initDOMLoadedElements);
-    } else {
-      document.addEventListener('DOMContentLoaded', this.initDOMLoadedElements);
-      window.addEventListener('load', this.initDOMLoadedElements);
-    }
-  } // Helper function to retrieve options from element attributes
-  ;
-
-  SimpleBar.getElOptions = function getElOptions(el) {
-    var options = Array.prototype.reduce.call(el.attributes, function (acc, attribute) {
-      var option = attribute.name.match(/data-simplebar-(.+)/);
-
-      if (option) {
-        var key = option[1].replace(/\W+(.)/g, function (x, chr) {
-          return chr.toUpperCase();
-        });
-
-        switch (attribute.value) {
-          case 'true':
-            acc[key] = true;
-            break;
-
-          case 'false':
-            acc[key] = false;
-            break;
-
-          case undefined:
-            acc[key] = true;
-            break;
-
-          default:
-            acc[key] = attribute.value;
-        }
-      }
-
-      return acc;
-    }, {});
-    return options;
-  };
-
-  SimpleBar.removeObserver = function removeObserver() {
-    this.globalObserver.disconnect();
-  };
-
-  SimpleBar.initDOMLoadedElements = function initDOMLoadedElements() {
-    document.removeEventListener('DOMContentLoaded', this.initDOMLoadedElements);
-    window.removeEventListener('load', this.initDOMLoadedElements);
-    Array.prototype.forEach.call(document.querySelectorAll('[data-simplebar]'), function (el) {
-      if (!SimpleBar.instances.has(el)) new SimpleBar(el, SimpleBar.getElOptions(el));
-    });
-  };
-
   SimpleBar.getOffset = function getOffset(el) {
@@ -456,4 +366,4 @@ var rect = el.getBoundingClientRect();
       this.heightAutoObserverEl = this.el.querySelector("." + this.classNames.heightAutoObserverEl);
-      this.axis.x.track.el = this.el.querySelector("." + this.classNames.track + "." + this.classNames.horizontal);
-      this.axis.y.track.el = this.el.querySelector("." + this.classNames.track + "." + this.classNames.vertical);
+      this.axis.x.track.el = this.findChild(this.el, "." + this.classNames.track + "." + this.classNames.horizontal);
+      this.axis.y.track.el = this.findChild(this.el, "." + this.classNames.track + "." + this.classNames.vertical);
     } else {
@@ -538,30 +448,53 @@ // Prepare DOM
 
-    window.addEventListener('resize', this.onWindowResize);
-    this.resizeObserver = new ResizeObserver(this.recalculate);
+    window.addEventListener('resize', this.onWindowResize); // Hack for https://github.com/WICG/ResizeObserver/issues/38
+
+    var ignoredCallbacks = 0;
+    this.resizeObserver = new ResizeObserver(function () {
+      ignoredCallbacks++;
+      if (ignoredCallbacks === 1) return;
+
+      _this3.recalculate();
+    });
     this.resizeObserver.observe(this.el);
-    this.resizeObserver.observe(this.contentEl);
+    this.resizeObserver.observe(this.contentEl); // This is required to detect horizontal scroll. Vertical scroll only needs the resizeObserver.
+
+    this.mutationObserver = new MutationObserver(this.recalculate);
+    this.mutationObserver.observe(this.contentEl, {
+      childList: true,
+      subtree: true,
+      characterData: true
+    });
   };
 
   _proto.recalculate = function recalculate() {
+    this.elStyles = window.getComputedStyle(this.el);
+    this.isRtl = this.elStyles.direction === 'rtl';
     var isHeightAuto = this.heightAutoObserverEl.offsetHeight <= 1;
     var isWidthAuto = this.heightAutoObserverEl.offsetWidth <= 1;
-    this.elStyles = window.getComputedStyle(this.el);
-    this.isRtl = this.elStyles.direction === 'rtl';
+    var contentElOffsetWidth = this.contentEl.offsetWidth;
+    var contentWrapperElOffsetWidth = this.contentWrapperEl.offsetWidth;
+    var elOverflowX = this.elStyles.overflowX;
+    var elOverflowY = this.elStyles.overflowY;
     this.contentEl.style.padding = this.elStyles.paddingTop + " " + this.elStyles.paddingRight + " " + this.elStyles.paddingBottom + " " + this.elStyles.paddingLeft;
     this.wrapperEl.style.margin = "-" + this.elStyles.paddingTop + " -" + this.elStyles.paddingRight + " -" + this.elStyles.paddingBottom + " -" + this.elStyles.paddingLeft;
+    var contentElScrollHeight = this.contentEl.scrollHeight;
+    var contentElScrollWidth = this.contentEl.scrollWidth;
     this.contentWrapperEl.style.height = isHeightAuto ? 'auto' : '100%'; // Determine placeholder size
 
-    this.placeholderEl.style.width = isWidthAuto ? this.contentEl.offsetWidth + "px" : 'auto';
-    this.placeholderEl.style.height = this.contentEl.scrollHeight + "px"; // Set isOverflowing to false if scrollbar is not necessary (content is shorter than offset)
+    this.placeholderEl.style.width = isWidthAuto ? contentElOffsetWidth + "px" : 'auto';
+    this.placeholderEl.style.height = contentElScrollHeight + "px";
+    var contentWrapperElOffsetHeight = this.contentWrapperEl.offsetHeight;
+    this.axis.x.isOverflowing = contentElScrollWidth > contentElOffsetWidth;
+    this.axis.y.isOverflowing = contentElScrollHeight > contentWrapperElOffsetHeight; // Set isOverflowing to false if user explicitely set hidden overflow
 
-    this.axis.x.isOverflowing = this.contentWrapperEl.scrollWidth > this.contentWrapperEl.offsetWidth;
-    this.axis.y.isOverflowing = this.contentWrapperEl.scrollHeight > this.contentWrapperEl.offsetHeight; // Set isOverflowing to false if user explicitely set hidden overflow
-
-    this.axis.x.isOverflowing = this.elStyles.overflowX === 'hidden' ? false : this.axis.x.isOverflowing;
-    this.axis.y.isOverflowing = this.elStyles.overflowY === 'hidden' ? false : this.axis.y.isOverflowing;
+    this.axis.x.isOverflowing = elOverflowX === 'hidden' ? false : this.axis.x.isOverflowing;
+    this.axis.y.isOverflowing = elOverflowY === 'hidden' ? false : this.axis.y.isOverflowing;
     this.axis.x.forceVisible = this.options.forceVisible === 'x' || this.options.forceVisible === true;
     this.axis.y.forceVisible = this.options.forceVisible === 'y' || this.options.forceVisible === true;
-    this.hideNativeScrollbar();
-    this.axis.x.track.rect = this.axis.x.track.el.getBoundingClientRect();
-    this.axis.y.track.rect = this.axis.y.track.el.getBoundingClientRect();
+    this.hideNativeScrollbar(); // Set isOverflowing to false if scrollbar is not necessary (content is shorter than offset)
+
+    var offsetForXScrollbar = this.axis.x.isOverflowing ? this.scrollbarWidth : 0;
+    var offsetForYScrollbar = this.axis.y.isOverflowing ? this.scrollbarWidth : 0;
+    this.axis.x.isOverflowing = this.axis.x.isOverflowing && contentElScrollWidth > contentWrapperElOffsetWidth - offsetForYScrollbar;
+    this.axis.y.isOverflowing = this.axis.y.isOverflowing && contentElScrollHeight > contentWrapperElOffsetHeight - offsetForXScrollbar;
     this.axis.x.scrollbar.size = this.getScrollbarSize('x');
@@ -586,10 +519,9 @@ this.axis.y.scrollbar.size = this.getScrollbarSize('y');
 
-    var contentSize = this.scrollbarWidth ? this.contentWrapperEl[this.axis[axis].scrollSizeAttr] : this.contentWrapperEl[this.axis[axis].scrollSizeAttr] - this.minScrollbarWidth;
-    var trackSize = this.axis[axis].track.rect[this.axis[axis].sizeAttr];
-    var scrollbarSize;
-
     if (!this.axis[axis].isOverflowing) {
-      return;
+      return 0;
     }
 
+    var contentSize = this.contentEl[this.axis[axis].scrollSizeAttr];
+    var trackSize = this.axis[axis].track.el[this.axis[axis].offsetSizeAttr];
+    var scrollbarSize;
     var scrollbarRatio = trackSize / contentSize; // Calculate new height/position of drag handle.
@@ -611,4 +543,8 @@
 
+    if (!this.axis[axis].isOverflowing) {
+      return;
+    }
+
     var contentSize = this.contentWrapperEl[this.axis[axis].scrollSizeAttr];
-    var trackSize = this.axis[axis].track.rect[this.axis[axis].sizeAttr];
+    var trackSize = this.axis[axis].track.el[this.axis[axis].offsetSizeAttr];
     var hostSize = parseInt(this.elStyles[this.axis[axis].sizeAttr], 10);
@@ -649,10 +585,4 @@ var scrollbar = this.axis[axis].scrollbar;
   _proto.hideNativeScrollbar = function hideNativeScrollbar() {
-    this.offsetEl.style[this.isRtl ? 'left' : 'right'] = this.axis.y.isOverflowing || this.axis.y.forceVisible ? "-" + (this.scrollbarWidth || this.minScrollbarWidth) + "px" : 0;
-    this.offsetEl.style.bottom = this.axis.x.isOverflowing || this.axis.x.forceVisible ? "-" + (this.scrollbarWidth || this.minScrollbarWidth) + "px" : 0; // If floating scrollbar
-
-    if (!this.scrollbarWidth) {
-      var paddingDirection = [this.isRtl ? 'paddingLeft' : 'paddingRight'];
-      this.contentWrapperEl.style[paddingDirection] = this.axis.y.isOverflowing || this.axis.y.forceVisible ? this.minScrollbarWidth + "px" : 0;
-      this.contentWrapperEl.style.paddingBottom = this.axis.x.isOverflowing || this.axis.x.forceVisible ? this.minScrollbarWidth + "px" : 0;
-    }
+    this.offsetEl.style[this.isRtl ? 'left' : 'right'] = this.axis.y.isOverflowing || this.axis.y.forceVisible ? "-" + this.scrollbarWidth + "px" : 0;
+    this.offsetEl.style.bottom = this.axis.x.isOverflowing || this.axis.x.forceVisible ? "-" + this.scrollbarWidth + "px" : 0;
   }
@@ -728,6 +658,6 @@ /**
 
-    var scrollbar = this.axis[axis].scrollbar.el; // Measure how far the user's mouse is from the top of the scrollbar drag handle.
+    var scrollbar = this.axis[axis].scrollbar; // Measure how far the user's mouse is from the top of the scrollbar drag handle.
 
     var eventOffset = axis === 'y' ? e.pageY : e.pageX;
-    this.axis[axis].dragOffset = eventOffset - scrollbar.getBoundingClientRect()[this.axis[axis].offsetAttr];
+    this.axis[axis].dragOffset = eventOffset - scrollbar.rect[this.axis[axis].offsetAttr];
     this.draggedAxis = axis;
@@ -787,3 +717,3 @@ this.el.classList.add(this.classNames.dragging);
     window.removeEventListener('resize', this.onWindowResize);
-    this.mutationObserver && this.mutationObserver.disconnect();
+    this.mutationObserver.disconnect();
     this.resizeObserver.disconnect(); // Cancel all debounced functions
@@ -806,18 +736,19 @@
   /**
-   * Recursively walks up the parent nodes looking for this.el
+   * Check if mouse is within bounds
    */
   ;
 
-  _proto.isChildNode = function isChildNode(el) {
-    if (el === null) return false;
-    if (el === this.el) return true;
-    return this.isChildNode(el.parentNode);
+  _proto.isWithinBounds = function isWithinBounds(bbox) {
+    return this.mouseX >= bbox.left && this.mouseX <= bbox.left + bbox.width && this.mouseY >= bbox.top && this.mouseY <= bbox.top + bbox.height;
   }
   /**
-   * Check if mouse is within bounds
+   * Find element children matches query
    */
   ;
 
-  _proto.isWithinBounds = function isWithinBounds(bbox) {
-    return this.mouseX >= bbox.left && this.mouseX <= bbox.left + bbox.width && this.mouseY >= bbox.top && this.mouseY <= bbox.top + bbox.height;
+  _proto.findChild = function findChild(el, query) {
+    var matches = el.matches || el.webkitMatchesSelector || el.mozMatchesSelector || el.msMatchesSelector;
+    return Array.prototype.filter.call(el.children, function (child) {
+      return matches.call(child, query);
+    })[0];
   };
@@ -827,8 +758,3 @@
 }();
-/**
- * HTML API
- * Called only in a browser env.
- */
 
-
 SimpleBar.defaultOptions = {
@@ -860,2 +786,101 @@ autoHide: true,
 
+// Helper function to retrieve options from element attributes
+var getOptions = function getOptions(obj) {
+  var options = Array.prototype.reduce.call(obj, function (acc, attribute) {
+    var option = attribute.name.match(/data-simplebar-(.+)/);
+
+    if (option) {
+      var key = option[1].replace(/\W+(.)/g, function (x, chr) {
+        return chr.toUpperCase();
+      });
+
+      switch (attribute.value) {
+        case 'true':
+          acc[key] = true;
+          break;
+
+        case 'false':
+          acc[key] = false;
+          break;
+
+        case undefined:
+          acc[key] = true;
+          break;
+
+        default:
+          acc[key] = attribute.value;
+      }
+    }
+
+    return acc;
+  }, {});
+  return options;
+};
+
+SimpleBar.initDOMLoadedElements = function () {
+  document.removeEventListener('DOMContentLoaded', this.initDOMLoadedElements);
+  window.removeEventListener('load', this.initDOMLoadedElements);
+  Array.prototype.forEach.call(document.querySelectorAll('[data-simplebar]:not([data-simplebar="init"])'), function (el) {
+    if (!SimpleBar.instances.has(el)) new SimpleBar(el, getOptions(el.attributes));
+  });
+};
+
+SimpleBar.removeObserver = function () {
+  this.globalObserver.disconnect();
+};
+
+SimpleBar.initHtmlApi = function () {
+  this.initDOMLoadedElements = this.initDOMLoadedElements.bind(this); // MutationObserver is IE11+
+
+  if (typeof MutationObserver !== 'undefined') {
+    // Mutation observer to observe dynamically added elements
+    this.globalObserver = new MutationObserver(function (mutations) {
+      mutations.forEach(function (mutation) {
+        Array.prototype.forEach.call(mutation.addedNodes, function (addedNode) {
+          if (addedNode.nodeType === 1) {
+            if (addedNode.hasAttribute('data-simplebar')) {
+              !SimpleBar.instances.has(addedNode) && new SimpleBar(addedNode, getOptions(addedNode.attributes));
+            } else {
+              Array.prototype.forEach.call(addedNode.querySelectorAll('[data-simplebar]:not([data-simplebar="init"])'), function (el) {
+                !SimpleBar.instances.has(el) && new SimpleBar(el, getOptions(el.attributes));
+              });
+            }
+          }
+        });
+        Array.prototype.forEach.call(mutation.removedNodes, function (removedNode) {
+          if (removedNode.nodeType === 1) {
+            if (removedNode.hasAttribute('[data-simplebar]:not([data-simplebar="init"])')) {
+              SimpleBar.instances.has(removedNode) && SimpleBar.instances.get(removedNode).unMount();
+            } else {
+              Array.prototype.forEach.call(removedNode.querySelectorAll('[data-simplebar]:not([data-simplebar="init"])'), function (el) {
+                SimpleBar.instances.has(el) && SimpleBar.instances.get(el).unMount();
+              });
+            }
+          }
+        });
+      });
+    });
+    this.globalObserver.observe(document, {
+      childList: true,
+      subtree: true
+    });
+  } // Taken from jQuery `ready` function
+  // Instantiate elements already present on the page
+
+
+  if (document.readyState === 'complete' || document.readyState !== 'loading' && !document.documentElement.doScroll) {
+    // Handle it asynchronously to allow scripts the opportunity to delay init
+    window.setTimeout(this.initDOMLoadedElements);
+  } else {
+    document.addEventListener('DOMContentLoaded', this.initDOMLoadedElements);
+    window.addEventListener('load', this.initDOMLoadedElements);
+  }
+};
+
+SimpleBar.getOptions = getOptions;
+/**
+ * HTML API
+ * Called only in a browser env.
+ */
+
 if (canUseDOM) {
@@ -862,0 +887,0 @@ SimpleBar.initHtmlApi();

dist/simplebar.min.js

 /**
- * SimpleBar.js - v4.3.0-alpha.0
+ * SimpleBar.js - v4.3.0-alpha.1
  * Scrollbars, simpler.
@@ -10,2 +10,2 @@ * https://grsmto.github.io/simplebar/
 
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i=n[r];Object.defineProperty(t,i,{value:e[i],enumerable:!1,writable:!1,configurable:!0})}return t},vi=function(t){return t&&t.ownerDocument&&t.ownerDocument.defaultView||ai},gi=wi(0,0,0,0);function yi(t){return parseFloat(t)||0}function bi(t){for(var e=[],r=1;r<arguments.length;r++)e[r-1]=arguments[r];return e.reduce(function(e,r){return e+yi(t["border-"+r+"-width"])},0)}function mi(t){var e=t.clientWidth,r=t.clientHeight;if(!e&&!r)return gi;var n=vi(t).getComputedStyle(t),i=function(t){for(var e={},r=0,n=["top","right","bottom","left"];r<n.length;r++){var i=n[r],o=t["padding-"+i];e[i]=yi(o)}return e}(n),o=i.left+i.right,s=i.top+i.bottom,a=yi(n.width),c=yi(n.height);if("border-box"===n.boxSizing&&(Math.round(a+o)!==e&&(a-=bi(n,"left","right")+o),Math.round(c+s)!==r&&(c-=bi(n,"top","bottom")+s)),!function(t){return t===vi(t).document.documentElement}(t)){var l=Math.round(a+o)-e,u=Math.round(c+s)-r;1!==Math.abs(l)&&(a-=l),1!==Math.abs(u)&&(c-=u)}return wi(i.left,i.top,a,c)}var xi="undefined"!=typeof SVGGraphicsElement?function(t){return t instanceof vi(t).SVGGraphicsElement}:function(t){return t instanceof vi(t).SVGElement&&"function"==typeof t.getBBox};function Ei(t){return si?xi(t)?function(t){var e=t.getBBox();return wi(0,0,e.width,e.height)}(t):mi(t):gi}function wi(t,e,r,n){return{x:t,y:e,width:r,height:n}}var Oi=function(){function t(t){this.broadcastWidth=0,this.broadcastHeight=0,this.contentRect_=wi(0,0,0,0),this.target=t}return t.prototype.isActive=function(){var t=Ei(this.target);return this.contentRect_=t,t.width!==this.broadcastWidth||t.height!==this.broadcastHeight},t.prototype.broadcastRect=function(){var t=this.contentRect_;return this.broadcastWidth=t.width,this.broadcastHeight=t.height,t},t}(),_i=function(){return function(t,e){var r,n,i,o,s,a,c,l=(n=(r=e).x,i=r.y,o=r.width,s=r.height,a="undefined"!=typeof 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Object){if(!(t instanceof vi(t).Element))throw new TypeError('parameter 1 is not of type "Element".');var e=this.observations_;e.has(t)&&(e.delete(t),e.size||this.controller_.removeObserver(this))}},t.prototype.disconnect=function(){this.clearActive(),this.observations_.clear(),this.controller_.removeObserver(this)},t.prototype.gatherActive=function(){var t=this;this.clearActive(),this.observations_.forEach(function(e){e.isActive()&&t.activeObservations_.push(e)})},t.prototype.broadcastActive=function(){if(this.hasActive()){var t=this.callbackCtx_,e=this.activeObservations_.map(function(t){return new _i(t.target,t.broadcastRect())});this.callback_.call(t,e,t),this.clearActive()}},t.prototype.clearActive=function(){this.activeObservations_.splice(0)},t.prototype.hasActive=function(){return this.activeObservations_.length>0},t}(),Ai="undefined"!=typeof WeakMap?new WeakMap:new oi,ki=function(){return function t(e){if(!(this instanceof t))throw new TypeError("Cannot call a class as a function.");if(!arguments.length)throw new TypeError("1 argument required, but only 0 present.");var r=di.getInstance(),n=new Si(e,r,this);Ai.set(this,n)}}();["observe","unobserve","disconnect"].forEach(function(t){ki.prototype[t]=function(){var e;return(e=Ai.get(this))[t].apply(e,arguments)}});var Li=void 0!==ai.ResizeObserver?ai.ResizeObserver:ki,Mi=!("undefined"==typeof window||!window.document||!window.document.createElement);function ji(){if("undefined"==typeof document)return 0;var t=document.body,e=document.createElement("div"),r=e.style;r.position="fixed",r.left=0,r.visibility="hidden",r.overflowY="scroll",t.appendChild(e);var n=e.getBoundingClientRect().right;return t.removeChild(e),n}var Ri=function(){function t(e,r){var n=this;this.onScroll=function(){n.scrollXTicking||(window.requestAnimationFrame(n.scrollX),n.scrollXTicking=!0),n.scrollYTicking||(window.requestAnimationFrame(n.scrollY),n.scrollYTicking=!0)},this.scrollX=function(){n.axis.x.isOverflowing&&(n.showScrollbar("x"),n.positionScrollbar("x")),n.scrollXTicking=!1},this.scrollY=function(){n.axis.y.isOverflowing&&(n.showScrollbar("y"),n.positionScrollbar("y")),n.scrollYTicking=!1},this.onMouseEnter=function(){n.showScrollbar("x"),n.showScrollbar("y")},this.onMouseMove=function(t){n.mouseX=t.clientX,n.mouseY=t.clientY,(n.axis.x.isOverflowing||n.axis.x.forceVisible)&&n.onMouseMoveForAxis("x"),(n.axis.y.isOverflowing||n.axis.y.forceVisible)&&n.onMouseMoveForAxis("y")},this.onMouseLeave=function(){n.onMouseMove.cancel(),(n.axis.x.isOverflowing||n.axis.x.forceVisible)&&n.onMouseLeaveForAxis("x"),(n.axis.y.isOverflowing||n.axis.y.forceVisible)&&n.onMouseLeaveForAxis("y"),n.mouseX=-1,n.mouseY=-1},this.onWindowResize=function(){n.scrollbarWidth=ji(),n.hideNativeScrollbar()},this.hideScrollbars=function(){n.axis.x.track.rect=n.axis.x.track.el.getBoundingClientRect(),n.axis.y.track.rect=n.axis.y.track.el.getBoundingClientRect(),n.isWithinBounds(n.axis.y.track.rect)||(n.axis.y.scrollbar.el.classList.remove(n.classNames.visible),n.axis.y.isVisible=!1),n.isWithinBounds(n.axis.x.track.rect)||(n.axis.x.scrollbar.el.classList.remove(n.classNames.visible),n.axis.x.isVisible=!1)},this.onPointerEvent=function(t){var e,r;n.axis.x.scrollbar.rect=n.axis.x.scrollbar.el.getBoundingClientRect(),n.axis.y.scrollbar.rect=n.axis.y.scrollbar.el.getBoundingClientRect(),(n.axis.x.isOverflowing||n.axis.x.forceVisible)&&(r=n.isWithinBounds(n.axis.x.scrollbar.rect)),(n.axis.y.isOverflowing||n.axis.y.forceVisible)&&(e=n.isWithinBounds(n.axis.y.scrollbar.rect)),(e||r)&&(t.preventDefault(),t.stopPropagation(),"mousedown"===t.type&&(e&&n.onDragStart(t,"y"),r&&n.onDragStart(t,"x")))},this.drag=function(e){var r=n.axis[n.draggedAxis].track,i=r.rect[n.axis[n.draggedAxis].sizeAttr],o=n.axis[n.draggedAxis].scrollbar;e.preventDefault(),e.stopPropagation();var s=(("y"===n.draggedAxis?e.pageY:e.pageX)-r.rect[n.axis[n.draggedAxis].offsetAttr]-n.axis[n.draggedAxis].dragOffset)/r.rect[n.axis[n.draggedAxis].sizeAttr]*n.contentWrapperEl[n.axis[n.draggedAxis].scrollSizeAttr];"x"===n.draggedAxis&&(s=n.isRtl&&t.getRtlHelpers().isRtlScrollbarInverted?s-(i+o.size):s,s=n.isRtl&&t.getRtlHelpers().isRtlScrollingInverted?-s:s),n.contentWrapperEl[n.axis[n.draggedAxis].scrollOffsetAttr]=s},this.onEndDrag=function(t){t.preventDefault(),t.stopPropagation(),n.el.classList.remove(n.classNames.dragging),document.removeEventListener("mousemove",n.drag,!0),document.removeEventListener("mouseup",n.onEndDrag,!0),n.removePreventClickId=window.setTimeout(function(){document.removeEventListener("click",n.preventClick,!0),document.removeEventListener("dblclick",n.preventClick,!0),n.removePreventClickId=null})},this.preventClick=function(t){t.preventDefault(),t.stopPropagation()},this.el=e,this.flashTimeout,this.contentEl,this.contentWrapperEl,this.offsetEl,this.maskEl,this.globalObserver,this.mutationObserver,this.resizeObserver,this.scrollbarWidth,this.minScrollbarWidth=20,this.options=Object.assign({},t.defaultOptions,r),this.classNames=Object.assign({},t.defaultOptions.classNames,this.options.classNames),this.isRtl,this.axis={x:{scrollOffsetAttr:"scrollLeft",sizeAttr:"width",scrollSizeAttr:"scrollWidth",offsetAttr:"left",overflowAttr:"overflowX",dragOffset:0,isOverflowing:!0,isVisible:!1,forceVisible:!1,track:{},scrollbar:{}},y:{scrollOffsetAttr:"scrollTop",sizeAttr:"height",scrollSizeAttr:"scrollHeight",offsetAttr:"top",overflowAttr:"overflowY",dragOffset:0,isOverflowing:!0,isVisible:!1,forceVisible:!1,track:{},scrollbar:{}}},this.removePreventClickId=null,t.instances.has(this.el)||(this.recalculate=un(this.recalculate.bind(this),64),this.onMouseMove=un(this.onMouseMove.bind(this),64),this.hideScrollbars=Ln(this.hideScrollbars.bind(this),this.options.timeout),this.onWindowResize=Ln(this.onWindowResize.bind(this),64,{leading:!0}),t.getRtlHelpers=ii(t.getRtlHelpers),this.init())}t.getRtlHelpers=function(){var e=document.createElement("div");e.innerHTML='<div class="hs-dummy-scrollbar-size"><div style="height: 200%; width: 200%; margin: 10px 0;"></div></div>';var r=e.firstElementChild;document.body.appendChild(r);var n=r.firstElementChild;r.scrollLeft=0;var i=t.getOffset(r),o=t.getOffset(n);r.scrollLeft=999;var s=t.getOffset(n);return{isRtlScrollingInverted:i.left!==o.left&&o.left-s.left!=0,isRtlScrollbarInverted:i.left!==o.left}},t.initHtmlApi=function(){this.initDOMLoadedElements=this.initDOMLoadedElements.bind(this),"undefined"!=typeof MutationObserver&&(this.globalObserver=new MutationObserver(function(e){e.forEach(function(e){Array.prototype.forEach.call(e.addedNodes,function(e){1===e.nodeType&&(e.hasAttribute("data-simplebar")?!t.instances.has(e)&&new t(e,t.getElOptions(e)):Array.prototype.forEach.call(e.querySelectorAll("[data-simplebar]"),function(e){!t.instances.has(e)&&new t(e,t.getElOptions(e))}))}),Array.prototype.forEach.call(e.removedNodes,function(e){1===e.nodeType&&(e.hasAttribute("data-simplebar")?t.instances.has(e)&&t.instances.get(e).unMount():Array.prototype.forEach.call(e.querySelectorAll("[data-simplebar]"),function(e){t.instances.has(e)&&t.instances.get(e).unMount()}))})})}),this.globalObserver.observe(document,{childList:!0,subtree:!0})),"complete"===document.readyState||"loading"!==document.readyState&&!document.documentElement.doScroll?window.setTimeout(this.initDOMLoadedElements):(document.addEventListener("DOMContentLoaded",this.initDOMLoadedElements),window.addEventListener("load",this.initDOMLoadedElements))},t.getElOptions=function(t){return Array.prototype.reduce.call(t.attributes,function(t,e){var r=e.name.match(/data-simplebar-(.+)/);if(r){var n=r[1].replace(/\W+(.)/g,function(t,e){return e.toUpperCase()});switch(e.value){case"true":t[n]=!0;break;case"false":t[n]=!1;break;case void 0:t[n]=!0;break;default:t[n]=e.value}}return t},{})},t.removeObserver=function(){this.globalObserver.disconnect()},t.initDOMLoadedElements=function(){document.removeEventListener("DOMContentLoaded",this.initDOMLoadedElements),window.removeEventListener("load",this.initDOMLoadedElements),Array.prototype.forEach.call(document.querySelectorAll("[data-simplebar]"),function(e){t.instances.has(e)||new t(e,t.getElOptions(e))})},t.getOffset=function(t){var e=t.getBoundingClientRect();return{top:e.top+(window.pageYOffset||document.documentElement.scrollTop),left:e.left+(window.pageXOffset||document.documentElement.scrollLeft)}};var e=t.prototype;return e.init=function(){t.instances.set(this.el,this),Mi&&(this.initDOM(),this.scrollbarWidth=ji(),this.recalculate(),this.initListeners())},e.initDOM=function(){var t=this;if(Array.prototype.filter.call(this.el.children,function(e){return e.classList.contains(t.classNames.wrapper)}).length)this.wrapperEl=this.el.querySelector("."+this.classNames.wrapper),this.contentWrapperEl=this.options.scrollableNode||this.el.querySelector("."+this.classNames.contentWrapper),this.contentEl=this.options.contentNode||this.el.querySelector("."+this.classNames.contentEl),this.offsetEl=this.el.querySelector("."+this.classNames.offset),this.maskEl=this.el.querySelector("."+this.classNames.mask),this.placeholderEl=this.el.querySelector("."+this.classNames.placeholder),this.heightAutoObserverWrapperEl=this.el.querySelector("."+this.classNames.heightAutoObserverWrapperEl),this.heightAutoObserverEl=this.el.querySelector("."+this.classNames.heightAutoObserverEl),this.axis.x.track.el=this.el.querySelector("."+this.classNames.track+"."+this.classNames.horizontal),this.axis.y.track.el=this.el.querySelector("."+this.classNames.track+"."+this.classNames.vertical);else{for(this.wrapperEl=document.createElement("div"),this.contentWrapperEl=document.createElement("div"),this.offsetEl=document.createElement("div"),this.maskEl=document.createElement("div"),this.contentEl=document.createElement("div"),this.placeholderEl=document.createElement("div"),this.heightAutoObserverWrapperEl=document.createElement("div"),this.heightAutoObserverEl=document.createElement("div"),this.wrapperEl.classList.add(this.classNames.wrapper),this.contentWrapperEl.classList.add(this.classNames.contentWrapper),this.offsetEl.classList.add(this.classNames.offset),this.maskEl.classList.add(this.classNames.mask),this.contentEl.classList.add(this.classNames.contentEl),this.placeholderEl.classList.add(this.classNames.placeholder),this.heightAutoObserverWrapperEl.classList.add(this.classNames.heightAutoObserverWrapperEl),this.heightAutoObserverEl.classList.add(this.classNames.heightAutoObserverEl);this.el.firstChild;)this.contentEl.appendChild(this.el.firstChild);this.contentWrapperEl.appendChild(this.contentEl),this.offsetEl.appendChild(this.contentWrapperEl),this.maskEl.appendChild(this.offsetEl),this.heightAutoObserverWrapperEl.appendChild(this.heightAutoObserverEl),this.wrapperEl.appendChild(this.heightAutoObserverWrapperEl),this.wrapperEl.appendChild(this.maskEl),this.wrapperEl.appendChild(this.placeholderEl),this.el.appendChild(this.wrapperEl)}if(!this.axis.x.track.el||!this.axis.y.track.el){var e=document.createElement("div"),r=document.createElement("div");e.classList.add(this.classNames.track),r.classList.add(this.classNames.scrollbar),e.appendChild(r),this.axis.x.track.el=e.cloneNode(!0),this.axis.x.track.el.classList.add(this.classNames.horizontal),this.axis.y.track.el=e.cloneNode(!0),this.axis.y.track.el.classList.add(this.classNames.vertical),this.el.appendChild(this.axis.x.track.el),this.el.appendChild(this.axis.y.track.el)}this.axis.x.scrollbar.el=this.axis.x.track.el.querySelector("."+this.classNames.scrollbar),this.axis.y.scrollbar.el=this.axis.y.track.el.querySelector("."+this.classNames.scrollbar),this.options.autoHide||(this.axis.x.scrollbar.el.classList.add(this.classNames.visible),this.axis.y.scrollbar.el.classList.add(this.classNames.visible)),this.el.setAttribute("data-simplebar","init")},e.initListeners=function(){var t=this;this.options.autoHide&&this.el.addEventListener("mouseenter",this.onMouseEnter),["mousedown","click","dblclick"].forEach(function(e){t.el.addEventListener(e,t.onPointerEvent,!0)}),["touchstart","touchend","touchmove"].forEach(function(e){t.el.addEventListener(e,t.onPointerEvent,{capture:!0,passive:!0})}),this.el.addEventListener("mousemove",this.onMouseMove),this.el.addEventListener("mouseleave",this.onMouseLeave),this.contentWrapperEl.addEventListener("scroll",this.onScroll),window.addEventListener("resize",this.onWindowResize),this.resizeObserver=new Li(this.recalculate),this.resizeObserver.observe(this.el),this.resizeObserver.observe(this.contentEl)},e.recalculate=function(){var t=this.heightAutoObserverEl.offsetHeight<=1,e=this.heightAutoObserverEl.offsetWidth<=1;this.elStyles=window.getComputedStyle(this.el),this.isRtl="rtl"===this.elStyles.direction,this.contentEl.style.padding=this.elStyles.paddingTop+" "+this.elStyles.paddingRight+" "+this.elStyles.paddingBottom+" "+this.elStyles.paddingLeft,this.wrapperEl.style.margin="-"+this.elStyles.paddingTop+" -"+this.elStyles.paddingRight+" -"+this.elStyles.paddingBottom+" -"+this.elStyles.paddingLeft,this.contentWrapperEl.style.height=t?"auto":"100%",this.placeholderEl.style.width=e?this.contentEl.offsetWidth+"px":"auto",this.placeholderEl.style.height=this.contentEl.scrollHeight+"px",this.axis.x.isOverflowing=this.contentWrapperEl.scrollWidth>this.contentWrapperEl.offsetWidth,this.axis.y.isOverflowing=this.contentWrapperEl.scrollHeight>this.contentWrapperEl.offsetHeight,this.axis.x.isOverflowing="hidden"!==this.elStyles.overflowX&&this.axis.x.isOverflowing,this.axis.y.isOverflowing="hidden"!==this.elStyles.overflowY&&this.axis.y.isOverflowing,this.axis.x.forceVisible="x"===this.options.forceVisible||!0===this.options.forceVisible,this.axis.y.forceVisible="y"===this.options.forceVisible||!0===this.options.forceVisible,this.hideNativeScrollbar(),this.axis.x.track.rect=this.axis.x.track.el.getBoundingClientRect(),this.axis.y.track.rect=this.axis.y.track.el.getBoundingClientRect(),this.axis.x.scrollbar.size=this.getScrollbarSize("x"),this.axis.y.scrollbar.size=this.getScrollbarSize("y"),this.axis.x.scrollbar.el.style.width=this.axis.x.scrollbar.size+"px",this.axis.y.scrollbar.el.style.height=this.axis.y.scrollbar.size+"px",this.positionScrollbar("x"),this.positionScrollbar("y"),this.toggleTrackVisibility("x"),this.toggleTrackVisibility("y")},e.getScrollbarSize=function(t){void 0===t&&(t="y");var e,r=this.scrollbarWidth?this.contentWrapperEl[this.axis[t].scrollSizeAttr]:this.contentWrapperEl[this.axis[t].scrollSizeAttr]-this.minScrollbarWidth,n=this.axis[t].track.rect[this.axis[t].sizeAttr];if(this.axis[t].isOverflowing){var i=n/r;return e=Math.max(~~(i*n),this.options.scrollbarMinSize),this.options.scrollbarMaxSize&&(e=Math.min(e,this.options.scrollbarMaxSize)),e}},e.positionScrollbar=function(e){void 0===e&&(e="y");var r=this.contentWrapperEl[this.axis[e].scrollSizeAttr],n=this.axis[e].track.rect[this.axis[e].sizeAttr],i=parseInt(this.elStyles[this.axis[e].sizeAttr],10),o=this.axis[e].scrollbar,s=this.contentWrapperEl[this.axis[e].scrollOffsetAttr],a=(s="x"===e&&this.isRtl&&t.getRtlHelpers().isRtlScrollingInverted?-s:s)/(r-i),c=~~((n-o.size)*a);c="x"===e&&this.isRtl&&t.getRtlHelpers().isRtlScrollbarInverted?c+(n-o.size):c,o.el.style.transform="x"===e?"translate3d("+c+"px, 0, 0)":"translate3d(0, "+c+"px, 0)"},e.toggleTrackVisibility=function(t){void 0===t&&(t="y");var e=this.axis[t].track.el,r=this.axis[t].scrollbar.el;this.axis[t].isOverflowing||this.axis[t].forceVisible?(e.style.visibility="visible",this.contentWrapperEl.style[this.axis[t].overflowAttr]="scroll"):(e.style.visibility="hidden",this.contentWrapperEl.style[this.axis[t].overflowAttr]="hidden"),this.axis[t].isOverflowing?r.style.display="block":r.style.display="none"},e.hideNativeScrollbar=function(){if(this.offsetEl.style[this.isRtl?"left":"right"]=this.axis.y.isOverflowing||this.axis.y.forceVisible?"-"+(this.scrollbarWidth||this.minScrollbarWidth)+"px":0,this.offsetEl.style.bottom=this.axis.x.isOverflowing||this.axis.x.forceVisible?"-"+(this.scrollbarWidth||this.minScrollbarWidth)+"px":0,!this.scrollbarWidth){var t=[this.isRtl?"paddingLeft":"paddingRight"];this.contentWrapperEl.style[t]=this.axis.y.isOverflowing||this.axis.y.forceVisible?this.minScrollbarWidth+"px":0,this.contentWrapperEl.style.paddingBottom=this.axis.x.isOverflowing||this.axis.x.forceVisible?this.minScrollbarWidth+"px":0}},e.onMouseMoveForAxis=function(t){void 0===t&&(t="y"),this.axis[t].track.rect=this.axis[t].track.el.getBoundingClientRect(),this.axis[t].scrollbar.rect=this.axis[t].scrollbar.el.getBoundingClientRect(),this.isWithinBounds(this.axis[t].scrollbar.rect)?this.axis[t].scrollbar.el.classList.add(this.classNames.hover):this.axis[t].scrollbar.el.classList.remove(this.classNames.hover),this.isWithinBounds(this.axis[t].track.rect)?(this.showScrollbar(t),this.axis[t].track.el.classList.add(this.classNames.hover)):this.axis[t].track.el.classList.remove(this.classNames.hover)},e.onMouseLeaveForAxis=function(t){void 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e=document.createElement("div"),r=document.createElement("div");e.classList.add(this.classNames.track),r.classList.add(this.classNames.scrollbar),e.appendChild(r),this.axis.x.track.el=e.cloneNode(!0),this.axis.x.track.el.classList.add(this.classNames.horizontal),this.axis.y.track.el=e.cloneNode(!0),this.axis.y.track.el.classList.add(this.classNames.vertical),this.el.appendChild(this.axis.x.track.el),this.el.appendChild(this.axis.y.track.el)}this.axis.x.scrollbar.el=this.axis.x.track.el.querySelector("."+this.classNames.scrollbar),this.axis.y.scrollbar.el=this.axis.y.track.el.querySelector("."+this.classNames.scrollbar),this.options.autoHide||(this.axis.x.scrollbar.el.classList.add(this.classNames.visible),this.axis.y.scrollbar.el.classList.add(this.classNames.visible)),this.el.setAttribute("data-simplebar","init")},e.initListeners=function(){var t=this;this.options.autoHide&&this.el.addEventListener("mouseenter",this.onMouseEnter),["mousedown","click","dblclick"].forEach((function(e){t.el.addEventListener(e,t.onPointerEvent,!0)})),["touchstart","touchend","touchmove"].forEach((function(e){t.el.addEventListener(e,t.onPointerEvent,{capture:!0,passive:!0})})),this.el.addEventListener("mousemove",this.onMouseMove),this.el.addEventListener("mouseleave",this.onMouseLeave),this.contentWrapperEl.addEventListener("scroll",this.onScroll),window.addEventListener("resize",this.onWindowResize);var e=0;this.resizeObserver=new di((function(){1!==++e&&t.recalculate()})),this.resizeObserver.observe(this.el),this.resizeObserver.observe(this.contentEl),this.mutationObserver=new MutationObserver(this.recalculate),this.mutationObserver.observe(this.contentEl,{childList:!0,subtree:!0,characterData:!0})},e.recalculate=function(){this.elStyles=window.getComputedStyle(this.el),this.isRtl="rtl"===this.elStyles.direction;var t=this.heightAutoObserverEl.offsetHeight<=1,e=this.heightAutoObserverEl.offsetWidth<=1,r=this.contentEl.offsetWidth,n=this.contentWrapperEl.offsetWidth,i=this.elStyles.overflowX,o=this.elStyles.overflowY;this.contentEl.style.padding=this.elStyles.paddingTop+" "+this.elStyles.paddingRight+" "+this.elStyles.paddingBottom+" "+this.elStyles.paddingLeft,this.wrapperEl.style.margin="-"+this.elStyles.paddingTop+" -"+this.elStyles.paddingRight+" -"+this.elStyles.paddingBottom+" -"+this.elStyles.paddingLeft;var s=this.contentEl.scrollHeight,a=this.contentEl.scrollWidth;this.contentWrapperEl.style.height=t?"auto":"100%",this.placeholderEl.style.width=e?r+"px":"auto",this.placeholderEl.style.height=s+"px";var c=this.contentWrapperEl.offsetHeight;this.axis.x.isOverflowing=a>r,this.axis.y.isOverflowing=s>c,this.axis.x.isOverflowing="hidden"!==i&&this.axis.x.isOverflowing,this.axis.y.isOverflowing="hidden"!==o&&this.axis.y.isOverflowing,this.axis.x.forceVisible="x"===this.options.forceVisible||!0===this.options.forceVisible,this.axis.y.forceVisible="y"===this.options.forceVisible||!0===this.options.forceVisible,this.hideNativeScrollbar();var l=this.axis.x.isOverflowing?this.scrollbarWidth:0,u=this.axis.y.isOverflowing?this.scrollbarWidth:0;this.axis.x.isOverflowing=this.axis.x.isOverflowing&&a>n-u,this.axis.y.isOverflowing=this.axis.y.isOverflowing&&s>c-l,this.axis.x.scrollbar.size=this.getScrollbarSize("x"),this.axis.y.scrollbar.size=this.getScrollbarSize("y"),this.axis.x.scrollbar.el.style.width=this.axis.x.scrollbar.size+"px",this.axis.y.scrollbar.el.style.height=this.axis.y.scrollbar.size+"px",this.positionScrollbar("x"),this.positionScrollbar("y"),this.toggleTrackVisibility("x"),this.toggleTrackVisibility("y")},e.getScrollbarSize=function(t){if(void 0===t&&(t="y"),!this.axis[t].isOverflowing)return 0;var e,r=this.contentEl[this.axis[t].scrollSizeAttr],n=this.axis[t].track.el[this.axis[t].offsetSizeAttr],i=n/r;return e=Math.max(~~(i*n),this.options.scrollbarMinSize),this.options.scrollbarMaxSize&&(e=Math.min(e,this.options.scrollbarMaxSize)),e},e.positionScrollbar=function(e){if(void 0===e&&(e="y"),this.axis[e].isOverflowing){var r=this.contentWrapperEl[this.axis[e].scrollSizeAttr],n=this.axis[e].track.el[this.axis[e].offsetSizeAttr],i=parseInt(this.elStyles[this.axis[e].sizeAttr],10),o=this.axis[e].scrollbar,s=this.contentWrapperEl[this.axis[e].scrollOffsetAttr],a=(s="x"===e&&this.isRtl&&t.getRtlHelpers().isRtlScrollingInverted?-s:s)/(r-i),c=~~((n-o.size)*a);c="x"===e&&this.isRtl&&t.getRtlHelpers().isRtlScrollbarInverted?c+(n-o.size):c,o.el.style.transform="x"===e?"translate3d("+c+"px, 0, 0)":"translate3d(0, "+c+"px, 0)"}},e.toggleTrackVisibility=function(t){void 0===t&&(t="y");var e=this.axis[t].track.el,r=this.axis[t].scrollbar.el;this.axis[t].isOverflowing||this.axis[t].forceVisible?(e.style.visibility="visible",this.contentWrapperEl.style[this.axis[t].overflowAttr]="scroll"):(e.style.visibility="hidden",this.contentWrapperEl.style[this.axis[t].overflowAttr]="hidden"),this.axis[t].isOverflowing?r.style.display="block":r.style.display="none"},e.hideNativeScrollbar=function(){this.offsetEl.style[this.isRtl?"left":"right"]=this.axis.y.isOverflowing||this.axis.y.forceVisible?"-"+this.scrollbarWidth+"px":0,this.offsetEl.style.bottom=this.axis.x.isOverflowing||this.axis.x.forceVisible?"-"+this.scrollbarWidth+"px":0},e.onMouseMoveForAxis=function(t){void 0===t&&(t="y"),this.axis[t].track.rect=this.axis[t].track.el.getBoundingClientRect(),this.axis[t].scrollbar.rect=this.axis[t].scrollbar.el.getBoundingClientRect(),this.isWithinBounds(this.axis[t].scrollbar.rect)?this.axis[t].scrollbar.el.classList.add(this.classNames.hover):this.axis[t].scrollbar.el.classList.remove(this.classNames.hover),this.isWithinBounds(this.axis[t].track.rect)?(this.showScrollbar(t),this.axis[t].track.el.classList.add(this.classNames.hover)):this.axis[t].track.el.classList.remove(this.classNames.hover)},e.onMouseLeaveForAxis=function(t){void 0===t&&(t="y"),this.axis[t].track.el.classList.remove(this.classNames.hover),this.axis[t].scrollbar.el.classList.remove(this.classNames.hover)},e.showScrollbar=function(t){void 0===t&&(t="y");var e=this.axis[t].scrollbar.el;this.axis[t].isVisible||(e.classList.add(this.classNames.visible),this.axis[t].isVisible=!0),this.options.autoHide&&this.hideScrollbars()},e.onDragStart=function(t,e){void 0===e&&(e="y");var r=this.axis[e].scrollbar,n="y"===e?t.pageY:t.pageX;this.axis[e].dragOffset=n-r.rect[this.axis[e].offsetAttr],this.draggedAxis=e,this.el.classList.add(this.classNames.dragging),document.addEventListener("mousemove",this.drag,!0),document.addEventListener("mouseup",this.onEndDrag,!0),null===this.removePreventClickId?(document.addEventListener("click",this.preventClick,!0),document.addEventListener("dblclick",this.preventClick,!0)):(window.clearTimeout(this.removePreventClickId),this.removePreventClickId=null)},e.getContentElement=function(){return this.contentEl},e.getScrollElement=function(){return this.contentWrapperEl},e.removeListeners=function(){var t=this;this.options.autoHide&&this.el.removeEventListener("mouseenter",this.onMouseEnter),["mousedown","click","dblclick"].forEach((function(e){t.el.removeEventListener(e,t.onPointerEvent,!0)})),["touchstart","touchend","touchmove"].forEach((function(e){t.el.removeEventListener(e,t.onPointerEvent,{capture:!0,passive:!0})})),this.el.removeEventListener("mousemove",this.onMouseMove),this.el.removeEventListener("mouseleave",this.onMouseLeave),this.contentWrapperEl.removeEventListener("scroll",this.onScroll),window.removeEventListener("resize",this.onWindowResize),this.mutationObserver.disconnect(),this.resizeObserver.disconnect(),this.recalculate.cancel(),this.onMouseMove.cancel(),this.hideScrollbars.cancel(),this.onWindowResize.cancel()},e.unMount=function(){this.removeListeners(),t.instances.delete(this.el)},e.isWithinBounds=function(t){return this.mouseX>=t.left&&this.mouseX<=t.left+t.width&&this.mouseY>=t.top&&this.mouseY<=t.top+t.height},e.findChild=function(t,e){var 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n(t,r,n,i,o,s){var a=n+t.length,c=i.length,l=qi;return void 0!==o&&(o=Mt(o),l=Bi),e.call(s,l,(function(e,s){var l;switch(s.charAt(0)){case"$":return"$";case"&":return t;case"`":return r.slice(0,n);case"'":return r.slice(a);case"<":l=o[s.slice(1,-1)];break;default:var u=+s;if(0===u)return e;if(u>c){var f=Hi(u/10);return 0===f?e:f<=c?void 0===i[f-1]?s.charAt(1):i[f-1]+s.charAt(1):e}l=i[u-1]}return void 0===l?"":l}))}}));var $i=function(t){return Array.prototype.reduce.call(t,(function(t,e){var r=e.name.match(/data-simplebar-(.+)/);if(r){var n=r[1].replace(/\W+(.)/g,(function(t,e){return e.toUpperCase()}));switch(e.value){case"true":t[n]=!0;break;case"false":t[n]=!1;break;case void 0:t[n]=!0;break;default:t[n]=e.value}}return t}),{})};return yi.initDOMLoadedElements=function(){document.removeEventListener("DOMContentLoaded",this.initDOMLoadedElements),window.removeEventListener("load",this.initDOMLoadedElements),Array.prototype.forEach.call(document.querySelectorAll('[data-simplebar]:not([data-simplebar="init"])'),(function(t){yi.instances.has(t)||new yi(t,$i(t.attributes))}))},yi.removeObserver=function(){this.globalObserver.disconnect()},yi.initHtmlApi=function(){this.initDOMLoadedElements=this.initDOMLoadedElements.bind(this),"undefined"!=typeof MutationObserver&&(this.globalObserver=new MutationObserver((function(t){t.forEach((function(t){Array.prototype.forEach.call(t.addedNodes,(function(t){1===t.nodeType&&(t.hasAttribute("data-simplebar")?!yi.instances.has(t)&&new yi(t,$i(t.attributes)):Array.prototype.forEach.call(t.querySelectorAll('[data-simplebar]:not([data-simplebar="init"])'),(function(t){!yi.instances.has(t)&&new yi(t,$i(t.attributes))})))})),Array.prototype.forEach.call(t.removedNodes,(function(t){1===t.nodeType&&(t.hasAttribute('[data-simplebar]:not([data-simplebar="init"])')?yi.instances.has(t)&&yi.instances.get(t).unMount():Array.prototype.forEach.call(t.querySelectorAll('[data-simplebar]:not([data-simplebar="init"])'),(function(t){yi.instances.has(t)&&yi.instances.get(t).unMount()})))}))}))})),this.globalObserver.observe(document,{childList:!0,subtree:!0})),"complete"===document.readyState||"loading"!==document.readyState&&!document.documentElement.doScroll?window.setTimeout(this.initDOMLoadedElements):(document.addEventListener("DOMContentLoaded",this.initDOMLoadedElements),window.addEventListener("load",this.initDOMLoadedElements))},yi.getOptions=$i,Xt&&yi.initHtmlApi(),yi}));

package.json

 {
-  "version": "4.3.0-alpha.0",
+  "version": "4.3.0-alpha.1",
   "name": "simplebar",
@@ -29,4 +29,5 @@ "title": "SimpleBar.js",
     "test:unit": "jest -c jest-unit.config.js",
-    "test:e2e": "yarn start --port 8091 & intern",
-    "version": "yarn build"
+    "test:e2e": "env-cmd intern",
+    "version": "yarn build",
+    "precommit": "lint-staged"
   },
@@ -50,3 +51,9 @@ "dependencies": {
   },
-  "gitHead": "ff2e4ddab7e2b26dea09de9938f7c9f9e244a5e3"
+  "lint-staged": {
+    "*.{js,jsx,json}": [
+      "prettier-eslint --write",
+      "git add"
+    ]
+  },
+  "gitHead": "19d281e901bd911dbdd6d5d52122e757fe6b7866"
 }

src/scrollbar-width.js

@@ -1,22 +0,37 @@
-export default function scrollbarWidth() {
-  if (typeof document === 'undefined') {
-    return 0;
+let cachedScrollbarWidth = null;
+let cachedDevicePixelRatio = null;
+
+window.addEventListener('resize', () => {
+  if (cachedDevicePixelRatio !== window.devicePixelRatio) {
+    cachedDevicePixelRatio = window.devicePixelRatio;
+    cachedScrollbarWidth = null;
   }
+});
 
-  const body = document.body;
-  const box = document.createElement('div');
-  const boxStyle = box.style;
+export default function scrollbarWidth() {
+  if (cachedScrollbarWidth === null) {
+    if (
+      typeof document === 'undefined' ||
+      /AppleWebKit/.test(navigator.userAgent) ||
+      'scrollbarWidth' in document.documentElement.style
+    ) {
+      cachedScrollbarWidth = 0;
+      return cachedScrollbarWidth;
+    }
 
-  boxStyle.position = 'fixed';
-  boxStyle.left = 0;
-  boxStyle.visibility = 'hidden';
-  boxStyle.overflowY = 'scroll';
+    const body = document.body;
+    const box = document.createElement('div');
 
-  body.appendChild(box);
+    box.classList.add('simplebar-hide-scrollbar');
 
-  const width = box.getBoundingClientRect().right;
+    body.appendChild(box);
 
-  body.removeChild(box);
+    const width = box.getBoundingClientRect().right;
 
-  return width;
+    body.removeChild(box);
+
+    cachedScrollbarWidth = width;
+  }
+
+  return cachedScrollbarWidth;
 }

src/simplebar.js

@@ -11,11 +11,2 @@ import throttle from 'lodash.throttle';
     this.el = element;
-    this.flashTimeout;
-    this.contentEl;
-    this.contentWrapperEl;
-    this.offsetEl;
-    this.maskEl;
-    this.globalObserver;
-    this.mutationObserver;
-    this.resizeObserver;
-    this.scrollbarWidth;
     this.minScrollbarWidth = 20;
@@ -27,3 +18,2 @@ this.options = { ...SimpleBar.defaultOptions, ...options };
     };
-    this.isRtl;
     this.axis = {
@@ -34,2 +24,3 @@ x: {
         scrollSizeAttr: 'scrollWidth',
+        offsetSizeAttr: 'offsetWidth',
         offsetAttr: 'left',
@@ -48,2 +39,3 @@ overflowAttr: 'overflowX',
         scrollSizeAttr: 'scrollHeight',
+        offsetSizeAttr: 'offsetHeight',
         offsetAttr: 'top',
@@ -144,114 +136,2 @@ overflowAttr: 'overflowY',
 
-  static initHtmlApi() {
-    this.initDOMLoadedElements = this.initDOMLoadedElements.bind(this);
-
-    // MutationObserver is IE11+
-    if (typeof MutationObserver !== 'undefined') {
-      // Mutation observer to observe dynamically added elements
-      this.globalObserver = new MutationObserver(mutations => {
-        mutations.forEach(mutation => {
-          Array.prototype.forEach.call(mutation.addedNodes, addedNode => {
-            if (addedNode.nodeType === 1) {
-              if (addedNode.hasAttribute('data-simplebar')) {
-                !SimpleBar.instances.has(addedNode) &&
-                  new SimpleBar(addedNode, SimpleBar.getElOptions(addedNode));
-              } else {
-                Array.prototype.forEach.call(
-                  addedNode.querySelectorAll('[data-simplebar]'),
-                  el => {
-                    !SimpleBar.instances.has(el) &&
-                      new SimpleBar(el, SimpleBar.getElOptions(el));
-                  }
-                );
-              }
-            }
-          });
-
-          Array.prototype.forEach.call(mutation.removedNodes, removedNode => {
-            if (removedNode.nodeType === 1) {
-              if (removedNode.hasAttribute('data-simplebar')) {
-                SimpleBar.instances.has(removedNode) &&
-                  SimpleBar.instances.get(removedNode).unMount();
-              } else {
-                Array.prototype.forEach.call(
-                  removedNode.querySelectorAll('[data-simplebar]'),
-                  el => {
-                    SimpleBar.instances.has(el) &&
-                      SimpleBar.instances.get(el).unMount();
-                  }
-                );
-              }
-            }
-          });
-        });
-      });
-
-      this.globalObserver.observe(document, { childList: true, subtree: true });
-    }
-
-    // Taken from jQuery `ready` function
-    // Instantiate elements already present on the page
-    if (
-      document.readyState === 'complete' ||
-      (document.readyState !== 'loading' && !document.documentElement.doScroll)
-    ) {
-      // Handle it asynchronously to allow scripts the opportunity to delay init
-      window.setTimeout(this.initDOMLoadedElements);
-    } else {
-      document.addEventListener('DOMContentLoaded', this.initDOMLoadedElements);
-      window.addEventListener('load', this.initDOMLoadedElements);
-    }
-  }
-
-  // Helper function to retrieve options from element attributes
-  static getElOptions(el) {
-    const options = Array.prototype.reduce.call(
-      el.attributes,
-      (acc, attribute) => {
-        const option = attribute.name.match(/data-simplebar-(.+)/);
-        if (option) {
-          const key = option[1].replace(/\W+(.)/g, (x, chr) =>
-            chr.toUpperCase()
-          );
-          switch (attribute.value) {
-            case 'true':
-              acc[key] = true;
-              break;
-            case 'false':
-              acc[key] = false;
-              break;
-            case undefined:
-              acc[key] = true;
-              break;
-            default:
-              acc[key] = attribute.value;
-          }
-        }
-        return acc;
-      },
-      {}
-    );
-    return options;
-  }
-
-  static removeObserver() {
-    this.globalObserver.disconnect();
-  }
-
-  static initDOMLoadedElements() {
-    document.removeEventListener(
-      'DOMContentLoaded',
-      this.initDOMLoadedElements
-    );
-    window.removeEventListener('load', this.initDOMLoadedElements);
-
-    Array.prototype.forEach.call(
-      document.querySelectorAll('[data-simplebar]'),
-      el => {
-        if (!SimpleBar.instances.has(el))
-          new SimpleBar(el, SimpleBar.getElOptions(el));
-      }
-    );
-  }
-
   static getOffset(el) {
@@ -301,2 +181,3 @@ const rect = el.getBoundingClientRect();
         this.el.querySelector(`.${this.classNames.contentEl}`);
+
       this.offsetEl = this.el.querySelector(`.${this.classNames.offset}`);
@@ -314,6 +195,8 @@ this.maskEl = this.el.querySelector(`.${this.classNames.mask}`);
       );
-      this.axis.x.track.el = this.el.querySelector(
+      this.axis.x.track.el = this.findChild(
+        this.el,
         `.${this.classNames.track}.${this.classNames.horizontal}`
       );
-      this.axis.y.track.el = this.el.querySelector(
+      this.axis.y.track.el = this.findChild(
+        this.el,
         `.${this.classNames.track}.${this.classNames.vertical}`
@@ -418,22 +301,44 @@ );
 
-    this.resizeObserver = new ResizeObserver(this.recalculate);
+    // Hack for https://github.com/WICG/ResizeObserver/issues/38
+    let ignoredCallbacks = 0;
+
+    this.resizeObserver = new ResizeObserver(() => {
+      ignoredCallbacks++;
+      if (ignoredCallbacks === 1) return;
+      this.recalculate();
+    });
+
     this.resizeObserver.observe(this.el);
     this.resizeObserver.observe(this.contentEl);
+
+    // This is required to detect horizontal scroll. Vertical scroll only needs the resizeObserver.
+    this.mutationObserver = new MutationObserver(this.recalculate);
+
+    this.mutationObserver.observe(this.contentEl, {
+      childList: true,
+      subtree: true,
+      characterData: true
+    });
   }
 
   recalculate() {
+    this.elStyles = window.getComputedStyle(this.el);
+    this.isRtl = this.elStyles.direction === 'rtl';
+
     const isHeightAuto = this.heightAutoObserverEl.offsetHeight <= 1;
     const isWidthAuto = this.heightAutoObserverEl.offsetWidth <= 1;
 
-    this.elStyles = window.getComputedStyle(this.el);
-    this.isRtl = this.elStyles.direction === 'rtl';
+    const contentElOffsetWidth = this.contentEl.offsetWidth;
 
-    this.contentEl.style.padding = `${this.elStyles.paddingTop} ${
-      this.elStyles.paddingRight
-    } ${this.elStyles.paddingBottom} ${this.elStyles.paddingLeft}`;
+    const contentWrapperElOffsetWidth = this.contentWrapperEl.offsetWidth;
 
-    this.wrapperEl.style.margin = `-${this.elStyles.paddingTop} -${
-      this.elStyles.paddingRight
-    } -${this.elStyles.paddingBottom} -${this.elStyles.paddingLeft}`;
+    const elOverflowX = this.elStyles.overflowX;
+    const elOverflowY = this.elStyles.overflowY;
 
+    this.contentEl.style.padding = `${this.elStyles.paddingTop} ${this.elStyles.paddingRight} ${this.elStyles.paddingBottom} ${this.elStyles.paddingLeft}`;
+    this.wrapperEl.style.margin = `-${this.elStyles.paddingTop} -${this.elStyles.paddingRight} -${this.elStyles.paddingBottom} -${this.elStyles.paddingLeft}`;
+
+    const contentElScrollHeight = this.contentEl.scrollHeight;
+    const contentElScrollWidth = this.contentEl.scrollWidth;
+
     this.contentWrapperEl.style.height = isHeightAuto ? 'auto' : '100%';
@@ -443,17 +348,17 @@
     this.placeholderEl.style.width = isWidthAuto
-      ? `${this.contentEl.offsetWidth}px`
+      ? `${contentElOffsetWidth}px`
       : 'auto';
-    this.placeholderEl.style.height = `${this.contentEl.scrollHeight}px`;
+    this.placeholderEl.style.height = `${contentElScrollHeight}px`;
 
-    // Set isOverflowing to false if scrollbar is not necessary (content is shorter than offset)
-    this.axis.x.isOverflowing =
-      this.contentWrapperEl.scrollWidth > this.contentWrapperEl.offsetWidth;
+    const contentWrapperElOffsetHeight = this.contentWrapperEl.offsetHeight;
+
+    this.axis.x.isOverflowing = contentElScrollWidth > contentElOffsetWidth;
     this.axis.y.isOverflowing =
-      this.contentWrapperEl.scrollHeight > this.contentWrapperEl.offsetHeight;
+      contentElScrollHeight > contentWrapperElOffsetHeight;
 
     // Set isOverflowing to false if user explicitely set hidden overflow
     this.axis.x.isOverflowing =
-      this.elStyles.overflowX === 'hidden' ? false : this.axis.x.isOverflowing;
+      elOverflowX === 'hidden' ? false : this.axis.x.isOverflowing;
     this.axis.y.isOverflowing =
-      this.elStyles.overflowY === 'hidden' ? false : this.axis.y.isOverflowing;
+      elOverflowY === 'hidden' ? false : this.axis.y.isOverflowing;
 
@@ -467,5 +372,18 @@ this.axis.x.forceVisible =
 
-    this.axis.x.track.rect = this.axis.x.track.el.getBoundingClientRect();
-    this.axis.y.track.rect = this.axis.y.track.el.getBoundingClientRect();
+    // Set isOverflowing to false if scrollbar is not necessary (content is shorter than offset)
+    let offsetForXScrollbar = this.axis.x.isOverflowing
+      ? this.scrollbarWidth
+      : 0;
+    let offsetForYScrollbar = this.axis.y.isOverflowing
+      ? this.scrollbarWidth
+      : 0;
 
+    this.axis.x.isOverflowing =
+      this.axis.x.isOverflowing &&
+      contentElScrollWidth > contentWrapperElOffsetWidth - offsetForYScrollbar;
+    this.axis.y.isOverflowing =
+      this.axis.y.isOverflowing &&
+      contentElScrollHeight >
+        contentWrapperElOffsetHeight - offsetForXScrollbar;
+
     this.axis.x.scrollbar.size = this.getScrollbarSize('x');
@@ -488,13 +406,10 @@ this.axis.y.scrollbar.size = this.getScrollbarSize('y');
   getScrollbarSize(axis = 'y') {
-    const contentSize = this.scrollbarWidth
-      ? this.contentWrapperEl[this.axis[axis].scrollSizeAttr]
-      : this.contentWrapperEl[this.axis[axis].scrollSizeAttr] -
-        this.minScrollbarWidth;
-    const trackSize = this.axis[axis].track.rect[this.axis[axis].sizeAttr];
-    let scrollbarSize;
-
     if (!this.axis[axis].isOverflowing) {
-      return;
+      return 0;
     }
 
+    const contentSize = this.contentEl[this.axis[axis].scrollSizeAttr];
+    const trackSize = this.axis[axis].track.el[this.axis[axis].offsetSizeAttr];
+    let scrollbarSize;
+
     let scrollbarRatio = trackSize / contentSize;
@@ -516,4 +431,8 @@
   positionScrollbar(axis = 'y') {
+    if (!this.axis[axis].isOverflowing) {
+      return;
+    }
+
     const contentSize = this.contentWrapperEl[this.axis[axis].scrollSizeAttr];
-    const trackSize = this.axis[axis].track.rect[this.axis[axis].sizeAttr];
+    const trackSize = this.axis[axis].track.el[this.axis[axis].offsetSizeAttr];
     const hostSize = parseInt(this.elStyles[this.axis[axis].sizeAttr], 10);
@@ -568,21 +487,8 @@ const scrollbar = this.axis[axis].scrollbar;
       this.axis.y.isOverflowing || this.axis.y.forceVisible
-        ? `-${this.scrollbarWidth || this.minScrollbarWidth}px`
+        ? `-${this.scrollbarWidth}px`
         : 0;
     this.offsetEl.style.bottom =
       this.axis.x.isOverflowing || this.axis.x.forceVisible
-        ? `-${this.scrollbarWidth || this.minScrollbarWidth}px`
+        ? `-${this.scrollbarWidth}px`
         : 0;
-
-    // If floating scrollbar
-    if (!this.scrollbarWidth) {
-      const paddingDirection = [this.isRtl ? 'paddingLeft' : 'paddingRight'];
-      this.contentWrapperEl.style[paddingDirection] =
-        this.axis.y.isOverflowing || this.axis.y.forceVisible
-          ? `${this.minScrollbarWidth}px`
-          : 0;
-      this.contentWrapperEl.style.paddingBottom =
-        this.axis.x.isOverflowing || this.axis.x.forceVisible
-          ? `${this.minScrollbarWidth}px`
-          : 0;
-    }
   }
@@ -765,3 +671,3 @@
   onDragStart(e, axis = 'y') {
-    const scrollbar = this.axis[axis].scrollbar.el;
+    const scrollbar = this.axis[axis].scrollbar;
 
@@ -771,4 +677,3 @@ // Measure how far the user's mouse is from the top of the scrollbar drag handle.
     this.axis[axis].dragOffset =
-      eventOffset -
-      scrollbar.getBoundingClientRect()[this.axis[axis].offsetAttr];
+      eventOffset - scrollbar.rect[this.axis[axis].offsetAttr];
     this.draggedAxis = axis;
@@ -797,2 +702,9 @@
     const scrollbar = this.axis[this.draggedAxis].scrollbar;
+    const contentSize = this.contentWrapperEl[
+      this.axis[this.draggedAxis].scrollSizeAttr
+    ];
+    const hostSize = parseInt(
+      this.elStyles[this.axis[this.draggedAxis].sizeAttr],
+      10
+    );
 
@@ -814,8 +726,6 @@ e.preventDefault();
     // Convert the mouse position into a percentage of the scrollbar height/width.
-    let dragPerc = dragPos / track.rect[this.axis[this.draggedAxis].sizeAttr];
+    let dragPerc = dragPos / (trackSize - scrollbar.size);
 
     // Scroll the content by the same percentage.
-    let scrollPos =
-      dragPerc *
-      this.contentWrapperEl[this.axis[this.draggedAxis].scrollSizeAttr];
+    let scrollPos = dragPerc * (contentSize - hostSize);
 
@@ -904,3 +814,3 @@ // Fix browsers inconsistency on RTL
 
-    this.mutationObserver && this.mutationObserver.disconnect();
+    this.mutationObserver.disconnect();
     this.resizeObserver.disconnect();
@@ -924,12 +834,2 @@
   /**
-   * Recursively walks up the parent nodes looking for this.el
-   */
-  isChildNode(el) {
-    if (el === null) return false;
-    if (el === this.el) return true;
-
-    return this.isChildNode(el.parentNode);
-  }
-
-  /**
    * Check if mouse is within bounds
@@ -945,10 +845,16 @@ */
   }
-}
 
-/**
- * HTML API
- * Called only in a browser env.
- */
-if (canUseDOM) {
-  SimpleBar.initHtmlApi();
+  /**
+   * Find element children matches query
+   */
+  findChild(el, query) {
+    const matches =
+      el.matches ||
+      el.webkitMatchesSelector ||
+      el.mozMatchesSelector ||
+      el.msMatchesSelector;
+    return Array.prototype.filter.call(el.children, child =>
+      matches.call(child, query)
+    )[0];
+  }
 }

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Fixed alerts

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Improved metrics

Total package byte prevSize

474476

increased by27.37%

Number of package files

16

increased by45.45%

Lines of code

7671

increased by12.46%

Number of medium quality alerts

0

decreased by-100%

Number of lines in readme file

313

increased byInfinity%

No dependency changes