{"version":3,"sources":["node_modules/intersection-observer/intersection-observer.js","node_modules/zone.js/fesm2015/zone.js","src/polyfills.ts"],"sourcesContent":["/**\n * Copyright 2016 Google Inc. All Rights Reserved.\n *\n * Licensed under the W3C SOFTWARE AND DOCUMENT NOTICE AND LICENSE.\n *\n *  https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document\n *\n */\n(function () {\n  'use strict';\n\n  // Exit early if we're not running in a browser.\n  if (typeof window !== 'object') {\n    return;\n  }\n\n  // Exit early if all IntersectionObserver and IntersectionObserverEntry\n  // features are natively supported.\n  if ('IntersectionObserver' in window && 'IntersectionObserverEntry' in window && 'intersectionRatio' in window.IntersectionObserverEntry.prototype) {\n    // Minimal polyfill for Edge 15's lack of `isIntersecting`\n    // See: https://github.com/w3c/IntersectionObserver/issues/211\n    if (!('isIntersecting' in window.IntersectionObserverEntry.prototype)) {\n      Object.defineProperty(window.IntersectionObserverEntry.prototype, 'isIntersecting', {\n        get: function () {\n          return this.intersectionRatio > 0;\n        }\n      });\n    }\n    return;\n  }\n\n  /**\n   * Returns the embedding frame element, if any.\n   * @param {!Document} doc\n   * @return {!Element}\n   */\n  function getFrameElement(doc) {\n    try {\n      return doc.defaultView && doc.defaultView.frameElement || null;\n    } catch (e) {\n      // Ignore the error.\n      return null;\n    }\n  }\n\n  /**\n   * A local reference to the root document.\n   */\n  var document = function (startDoc) {\n    var doc = startDoc;\n    var frame = getFrameElement(doc);\n    while (frame) {\n      doc = frame.ownerDocument;\n      frame = getFrameElement(doc);\n    }\n    return doc;\n  }(window.document);\n\n  /**\n   * An IntersectionObserver registry. This registry exists to hold a strong\n   * reference to IntersectionObserver instances currently observing a target\n   * element. Without this registry, instances without another reference may be\n   * garbage collected.\n   */\n  var registry = [];\n\n  /**\n   * The signal updater for cross-origin intersection. When not null, it means\n   * that the polyfill is configured to work in a cross-origin mode.\n   * @type {function(DOMRect|ClientRect, DOMRect|ClientRect)}\n   */\n  var crossOriginUpdater = null;\n\n  /**\n   * The current cross-origin intersection. Only used in the cross-origin mode.\n   * @type {DOMRect|ClientRect}\n   */\n  var crossOriginRect = null;\n\n  /**\n   * Creates the global IntersectionObserverEntry constructor.\n   * https://w3c.github.io/IntersectionObserver/#intersection-observer-entry\n   * @param {Object} entry A dictionary of instance properties.\n   * @constructor\n   */\n  function IntersectionObserverEntry(entry) {\n    this.time = entry.time;\n    this.target = entry.target;\n    this.rootBounds = ensureDOMRect(entry.rootBounds);\n    this.boundingClientRect = ensureDOMRect(entry.boundingClientRect);\n    this.intersectionRect = ensureDOMRect(entry.intersectionRect || getEmptyRect());\n    this.isIntersecting = !!entry.intersectionRect;\n\n    // Calculates the intersection ratio.\n    var targetRect = this.boundingClientRect;\n    var targetArea = targetRect.width * targetRect.height;\n    var intersectionRect = this.intersectionRect;\n    var intersectionArea = intersectionRect.width * intersectionRect.height;\n\n    // Sets intersection ratio.\n    if (targetArea) {\n      // Round the intersection ratio to avoid floating point math issues:\n      // https://github.com/w3c/IntersectionObserver/issues/324\n      this.intersectionRatio = Number((intersectionArea / targetArea).toFixed(4));\n    } else {\n      // If area is zero and is intersecting, sets to 1, otherwise to 0\n      this.intersectionRatio = this.isIntersecting ? 1 : 0;\n    }\n  }\n\n  /**\n   * Creates the global IntersectionObserver constructor.\n   * https://w3c.github.io/IntersectionObserver/#intersection-observer-interface\n   * @param {Function} callback The function to be invoked after intersection\n   *     changes have queued. The function is not invoked if the queue has\n   *     been emptied by calling the `takeRecords` method.\n   * @param {Object=} opt_options Optional configuration options.\n   * @constructor\n   */\n  function IntersectionObserver(callback, opt_options) {\n    var options = opt_options || {};\n    if (typeof callback != 'function') {\n      throw new Error('callback must be a function');\n    }\n    if (options.root && options.root.nodeType != 1 && options.root.nodeType != 9) {\n      throw new Error('root must be a Document or Element');\n    }\n\n    // Binds and throttles `this._checkForIntersections`.\n    this._checkForIntersections = throttle(this._checkForIntersections.bind(this), this.THROTTLE_TIMEOUT);\n\n    // Private properties.\n    this._callback = callback;\n    this._observationTargets = [];\n    this._queuedEntries = [];\n    this._rootMarginValues = this._parseRootMargin(options.rootMargin);\n\n    // Public properties.\n    this.thresholds = this._initThresholds(options.threshold);\n    this.root = options.root || null;\n    this.rootMargin = this._rootMarginValues.map(function (margin) {\n      return margin.value + margin.unit;\n    }).join(' ');\n\n    /** @private @const {!Array<!Document>} */\n    this._monitoringDocuments = [];\n    /** @private @const {!Array<function()>} */\n    this._monitoringUnsubscribes = [];\n  }\n\n  /**\n   * The minimum interval within which the document will be checked for\n   * intersection changes.\n   */\n  IntersectionObserver.prototype.THROTTLE_TIMEOUT = 100;\n\n  /**\n   * The frequency in which the polyfill polls for intersection changes.\n   * this can be updated on a per instance basis and must be set prior to\n   * calling `observe` on the first target.\n   */\n  IntersectionObserver.prototype.POLL_INTERVAL = null;\n\n  /**\n   * Use a mutation observer on the root element\n   * to detect intersection changes.\n   */\n  IntersectionObserver.prototype.USE_MUTATION_OBSERVER = true;\n\n  /**\n   * Sets up the polyfill in the cross-origin mode. The result is the\n   * updater function that accepts two arguments: `boundingClientRect` and\n   * `intersectionRect` - just as these fields would be available to the\n   * parent via `IntersectionObserverEntry`. This function should be called\n   * each time the iframe receives intersection information from the parent\n   * window, e.g. via messaging.\n   * @return {function(DOMRect|ClientRect, DOMRect|ClientRect)}\n   */\n  IntersectionObserver._setupCrossOriginUpdater = function () {\n    if (!crossOriginUpdater) {\n      /**\n       * @param {DOMRect|ClientRect} boundingClientRect\n       * @param {DOMRect|ClientRect} intersectionRect\n       */\n      crossOriginUpdater = function (boundingClientRect, intersectionRect) {\n        if (!boundingClientRect || !intersectionRect) {\n          crossOriginRect = getEmptyRect();\n        } else {\n          crossOriginRect = convertFromParentRect(boundingClientRect, intersectionRect);\n        }\n        registry.forEach(function (observer) {\n          observer._checkForIntersections();\n        });\n      };\n    }\n    return crossOriginUpdater;\n  };\n\n  /**\n   * Resets the cross-origin mode.\n   */\n  IntersectionObserver._resetCrossOriginUpdater = function () {\n    crossOriginUpdater = null;\n    crossOriginRect = null;\n  };\n\n  /**\n   * Starts observing a target element for intersection changes based on\n   * the thresholds values.\n   * @param {Element} target The DOM element to observe.\n   */\n  IntersectionObserver.prototype.observe = function (target) {\n    var isTargetAlreadyObserved = this._observationTargets.some(function (item) {\n      return item.element == target;\n    });\n    if (isTargetAlreadyObserved) {\n      return;\n    }\n    if (!(target && target.nodeType == 1)) {\n      throw new Error('target must be an Element');\n    }\n    this._registerInstance();\n    this._observationTargets.push({\n      element: target,\n      entry: null\n    });\n    this._monitorIntersections(target.ownerDocument);\n    this._checkForIntersections();\n  };\n\n  /**\n   * Stops observing a target element for intersection changes.\n   * @param {Element} target The DOM element to observe.\n   */\n  IntersectionObserver.prototype.unobserve = function (target) {\n    this._observationTargets = this._observationTargets.filter(function (item) {\n      return item.element != target;\n    });\n    this._unmonitorIntersections(target.ownerDocument);\n    if (this._observationTargets.length == 0) {\n      this._unregisterInstance();\n    }\n  };\n\n  /**\n   * Stops observing all target elements for intersection changes.\n   */\n  IntersectionObserver.prototype.disconnect = function () {\n    this._observationTargets = [];\n    this._unmonitorAllIntersections();\n    this._unregisterInstance();\n  };\n\n  /**\n   * Returns any queue entries that have not yet been reported to the\n   * callback and clears the queue. This can be used in conjunction with the\n   * callback to obtain the absolute most up-to-date intersection information.\n   * @return {Array} The currently queued entries.\n   */\n  IntersectionObserver.prototype.takeRecords = function () {\n    var records = this._queuedEntries.slice();\n    this._queuedEntries = [];\n    return records;\n  };\n\n  /**\n   * Accepts the threshold value from the user configuration object and\n   * returns a sorted array of unique threshold values. If a value is not\n   * between 0 and 1 and error is thrown.\n   * @private\n   * @param {Array|number=} opt_threshold An optional threshold value or\n   *     a list of threshold values, defaulting to [0].\n   * @return {Array} A sorted list of unique and valid threshold values.\n   */\n  IntersectionObserver.prototype._initThresholds = function (opt_threshold) {\n    var threshold = opt_threshold || [0];\n    if (!Array.isArray(threshold)) threshold = [threshold];\n    return threshold.sort().filter(function (t, i, a) {\n      if (typeof t != 'number' || isNaN(t) || t < 0 || t > 1) {\n        throw new Error('threshold must be a number between 0 and 1 inclusively');\n      }\n      return t !== a[i - 1];\n    });\n  };\n\n  /**\n   * Accepts the rootMargin value from the user configuration object\n   * and returns an array of the four margin values as an object containing\n   * the value and unit properties. If any of the values are not properly\n   * formatted or use a unit other than px or %, and error is thrown.\n   * @private\n   * @param {string=} opt_rootMargin An optional rootMargin value,\n   *     defaulting to '0px'.\n   * @return {Array<Object>} An array of margin objects with the keys\n   *     value and unit.\n   */\n  IntersectionObserver.prototype._parseRootMargin = function (opt_rootMargin) {\n    var marginString = opt_rootMargin || '0px';\n    var margins = marginString.split(/\\s+/).map(function (margin) {\n      var parts = /^(-?\\d*\\.?\\d+)(px|%)$/.exec(margin);\n      if (!parts) {\n        throw new Error('rootMargin must be specified in pixels or percent');\n      }\n      return {\n        value: parseFloat(parts[1]),\n        unit: parts[2]\n      };\n    });\n\n    // Handles shorthand.\n    margins[1] = margins[1] || margins[0];\n    margins[2] = margins[2] || margins[0];\n    margins[3] = margins[3] || margins[1];\n    return margins;\n  };\n\n  /**\n   * Starts polling for intersection changes if the polling is not already\n   * happening, and if the page's visibility state is visible.\n   * @param {!Document} doc\n   * @private\n   */\n  IntersectionObserver.prototype._monitorIntersections = function (doc) {\n    var win = doc.defaultView;\n    if (!win) {\n      // Already destroyed.\n      return;\n    }\n    if (this._monitoringDocuments.indexOf(doc) != -1) {\n      // Already monitoring.\n      return;\n    }\n\n    // Private state for monitoring.\n    var callback = this._checkForIntersections;\n    var monitoringInterval = null;\n    var domObserver = null;\n\n    // If a poll interval is set, use polling instead of listening to\n    // resize and scroll events or DOM mutations.\n    if (this.POLL_INTERVAL) {\n      monitoringInterval = win.setInterval(callback, this.POLL_INTERVAL);\n    } else {\n      addEvent(win, 'resize', callback, true);\n      addEvent(doc, 'scroll', callback, true);\n      if (this.USE_MUTATION_OBSERVER && 'MutationObserver' in win) {\n        domObserver = new win.MutationObserver(callback);\n        domObserver.observe(doc, {\n          attributes: true,\n          childList: true,\n          characterData: true,\n          subtree: true\n        });\n      }\n    }\n    this._monitoringDocuments.push(doc);\n    this._monitoringUnsubscribes.push(function () {\n      // Get the window object again. When a friendly iframe is destroyed, it\n      // will be null.\n      var win = doc.defaultView;\n      if (win) {\n        if (monitoringInterval) {\n          win.clearInterval(monitoringInterval);\n        }\n        removeEvent(win, 'resize', callback, true);\n      }\n      removeEvent(doc, 'scroll', callback, true);\n      if (domObserver) {\n        domObserver.disconnect();\n      }\n    });\n\n    // Also monitor the parent.\n    var rootDoc = this.root && (this.root.ownerDocument || this.root) || document;\n    if (doc != rootDoc) {\n      var frame = getFrameElement(doc);\n      if (frame) {\n        this._monitorIntersections(frame.ownerDocument);\n      }\n    }\n  };\n\n  /**\n   * Stops polling for intersection changes.\n   * @param {!Document} doc\n   * @private\n   */\n  IntersectionObserver.prototype._unmonitorIntersections = function (doc) {\n    var index = this._monitoringDocuments.indexOf(doc);\n    if (index == -1) {\n      return;\n    }\n    var rootDoc = this.root && (this.root.ownerDocument || this.root) || document;\n\n    // Check if any dependent targets are still remaining.\n    var hasDependentTargets = this._observationTargets.some(function (item) {\n      var itemDoc = item.element.ownerDocument;\n      // Target is in this context.\n      if (itemDoc == doc) {\n        return true;\n      }\n      // Target is nested in this context.\n      while (itemDoc && itemDoc != rootDoc) {\n        var frame = getFrameElement(itemDoc);\n        itemDoc = frame && frame.ownerDocument;\n        if (itemDoc == doc) {\n          return true;\n        }\n      }\n      return false;\n    });\n    if (hasDependentTargets) {\n      return;\n    }\n\n    // Unsubscribe.\n    var unsubscribe = this._monitoringUnsubscribes[index];\n    this._monitoringDocuments.splice(index, 1);\n    this._monitoringUnsubscribes.splice(index, 1);\n    unsubscribe();\n\n    // Also unmonitor the parent.\n    if (doc != rootDoc) {\n      var frame = getFrameElement(doc);\n      if (frame) {\n        this._unmonitorIntersections(frame.ownerDocument);\n      }\n    }\n  };\n\n  /**\n   * Stops polling for intersection changes.\n   * @param {!Document} doc\n   * @private\n   */\n  IntersectionObserver.prototype._unmonitorAllIntersections = function () {\n    var unsubscribes = this._monitoringUnsubscribes.slice(0);\n    this._monitoringDocuments.length = 0;\n    this._monitoringUnsubscribes.length = 0;\n    for (var i = 0; i < unsubscribes.length; i++) {\n      unsubscribes[i]();\n    }\n  };\n\n  /**\n   * Scans each observation target for intersection changes and adds them\n   * to the internal entries queue. If new entries are found, it\n   * schedules the callback to be invoked.\n   * @private\n   */\n  IntersectionObserver.prototype._checkForIntersections = function () {\n    if (!this.root && crossOriginUpdater && !crossOriginRect) {\n      // Cross origin monitoring, but no initial data available yet.\n      return;\n    }\n    var rootIsInDom = this._rootIsInDom();\n    var rootRect = rootIsInDom ? this._getRootRect() : getEmptyRect();\n    this._observationTargets.forEach(function (item) {\n      var target = item.element;\n      var targetRect = getBoundingClientRect(target);\n      var rootContainsTarget = this._rootContainsTarget(target);\n      var oldEntry = item.entry;\n      var intersectionRect = rootIsInDom && rootContainsTarget && this._computeTargetAndRootIntersection(target, targetRect, rootRect);\n      var rootBounds = null;\n      if (!this._rootContainsTarget(target)) {\n        rootBounds = getEmptyRect();\n      } else if (!crossOriginUpdater || this.root) {\n        rootBounds = rootRect;\n      }\n      var newEntry = item.entry = new IntersectionObserverEntry({\n        time: now(),\n        target: target,\n        boundingClientRect: targetRect,\n        rootBounds: rootBounds,\n        intersectionRect: intersectionRect\n      });\n      if (!oldEntry) {\n        this._queuedEntries.push(newEntry);\n      } else if (rootIsInDom && rootContainsTarget) {\n        // If the new entry intersection ratio has crossed any of the\n        // thresholds, add a new entry.\n        if (this._hasCrossedThreshold(oldEntry, newEntry)) {\n          this._queuedEntries.push(newEntry);\n        }\n      } else {\n        // If the root is not in the DOM or target is not contained within\n        // root but the previous entry for this target had an intersection,\n        // add a new record indicating removal.\n        if (oldEntry && oldEntry.isIntersecting) {\n          this._queuedEntries.push(newEntry);\n        }\n      }\n    }, this);\n    if (this._queuedEntries.length) {\n      this._callback(this.takeRecords(), this);\n    }\n  };\n\n  /**\n   * Accepts a target and root rect computes the intersection between then\n   * following the algorithm in the spec.\n   * TODO(philipwalton): at this time clip-path is not considered.\n   * https://w3c.github.io/IntersectionObserver/#calculate-intersection-rect-algo\n   * @param {Element} target The target DOM element\n   * @param {Object} targetRect The bounding rect of the target.\n   * @param {Object} rootRect The bounding rect of the root after being\n   *     expanded by the rootMargin value.\n   * @return {?Object} The final intersection rect object or undefined if no\n   *     intersection is found.\n   * @private\n   */\n  IntersectionObserver.prototype._computeTargetAndRootIntersection = function (target, targetRect, rootRect) {\n    // If the element isn't displayed, an intersection can't happen.\n    if (window.getComputedStyle(target).display == 'none') return;\n    var intersectionRect = targetRect;\n    var parent = getParentNode(target);\n    var atRoot = false;\n    while (!atRoot && parent) {\n      var parentRect = null;\n      var parentComputedStyle = parent.nodeType == 1 ? window.getComputedStyle(parent) : {};\n\n      // If the parent isn't displayed, an intersection can't happen.\n      if (parentComputedStyle.display == 'none') return null;\n      if (parent == this.root || parent.nodeType == /* DOCUMENT */9) {\n        atRoot = true;\n        if (parent == this.root || parent == document) {\n          if (crossOriginUpdater && !this.root) {\n            if (!crossOriginRect || crossOriginRect.width == 0 && crossOriginRect.height == 0) {\n              // A 0-size cross-origin intersection means no-intersection.\n              parent = null;\n              parentRect = null;\n              intersectionRect = null;\n            } else {\n              parentRect = crossOriginRect;\n            }\n          } else {\n            parentRect = rootRect;\n          }\n        } else {\n          // Check if there's a frame that can be navigated to.\n          var frame = getParentNode(parent);\n          var frameRect = frame && getBoundingClientRect(frame);\n          var frameIntersect = frame && this._computeTargetAndRootIntersection(frame, frameRect, rootRect);\n          if (frameRect && frameIntersect) {\n            parent = frame;\n            parentRect = convertFromParentRect(frameRect, frameIntersect);\n          } else {\n            parent = null;\n            intersectionRect = null;\n          }\n        }\n      } else {\n        // If the element has a non-visible overflow, and it's not the <body>\n        // or <html> element, update the intersection rect.\n        // Note: <body> and <html> cannot be clipped to a rect that's not also\n        // the document rect, so no need to compute a new intersection.\n        var doc = parent.ownerDocument;\n        if (parent != doc.body && parent != doc.documentElement && parentComputedStyle.overflow != 'visible') {\n          parentRect = getBoundingClientRect(parent);\n        }\n      }\n\n      // If either of the above conditionals set a new parentRect,\n      // calculate new intersection data.\n      if (parentRect) {\n        intersectionRect = computeRectIntersection(parentRect, intersectionRect);\n      }\n      if (!intersectionRect) break;\n      parent = parent && getParentNode(parent);\n    }\n    return intersectionRect;\n  };\n\n  /**\n   * Returns the root rect after being expanded by the rootMargin value.\n   * @return {ClientRect} The expanded root rect.\n   * @private\n   */\n  IntersectionObserver.prototype._getRootRect = function () {\n    var rootRect;\n    if (this.root && !isDoc(this.root)) {\n      rootRect = getBoundingClientRect(this.root);\n    } else {\n      // Use <html>/<body> instead of window since scroll bars affect size.\n      var doc = isDoc(this.root) ? this.root : document;\n      var html = doc.documentElement;\n      var body = doc.body;\n      rootRect = {\n        top: 0,\n        left: 0,\n        right: html.clientWidth || body.clientWidth,\n        width: html.clientWidth || body.clientWidth,\n        bottom: html.clientHeight || body.clientHeight,\n        height: html.clientHeight || body.clientHeight\n      };\n    }\n    return this._expandRectByRootMargin(rootRect);\n  };\n\n  /**\n   * Accepts a rect and expands it by the rootMargin value.\n   * @param {DOMRect|ClientRect} rect The rect object to expand.\n   * @return {ClientRect} The expanded rect.\n   * @private\n   */\n  IntersectionObserver.prototype._expandRectByRootMargin = function (rect) {\n    var margins = this._rootMarginValues.map(function (margin, i) {\n      return margin.unit == 'px' ? margin.value : margin.value * (i % 2 ? rect.width : rect.height) / 100;\n    });\n    var newRect = {\n      top: rect.top - margins[0],\n      right: rect.right + margins[1],\n      bottom: rect.bottom + margins[2],\n      left: rect.left - margins[3]\n    };\n    newRect.width = newRect.right - newRect.left;\n    newRect.height = newRect.bottom - newRect.top;\n    return newRect;\n  };\n\n  /**\n   * Accepts an old and new entry and returns true if at least one of the\n   * threshold values has been crossed.\n   * @param {?IntersectionObserverEntry} oldEntry The previous entry for a\n   *    particular target element or null if no previous entry exists.\n   * @param {IntersectionObserverEntry} newEntry The current entry for a\n   *    particular target element.\n   * @return {boolean} Returns true if a any threshold has been crossed.\n   * @private\n   */\n  IntersectionObserver.prototype._hasCrossedThreshold = function (oldEntry, newEntry) {\n    // To make comparing easier, an entry that has a ratio of 0\n    // but does not actually intersect is given a value of -1\n    var oldRatio = oldEntry && oldEntry.isIntersecting ? oldEntry.intersectionRatio || 0 : -1;\n    var newRatio = newEntry.isIntersecting ? newEntry.intersectionRatio || 0 : -1;\n\n    // Ignore unchanged ratios\n    if (oldRatio === newRatio) return;\n    for (var i = 0; i < this.thresholds.length; i++) {\n      var threshold = this.thresholds[i];\n\n      // Return true if an entry matches a threshold or if the new ratio\n      // and the old ratio are on the opposite sides of a threshold.\n      if (threshold == oldRatio || threshold == newRatio || threshold < oldRatio !== threshold < newRatio) {\n        return true;\n      }\n    }\n  };\n\n  /**\n   * Returns whether or not the root element is an element and is in the DOM.\n   * @return {boolean} True if the root element is an element and is in the DOM.\n   * @private\n   */\n  IntersectionObserver.prototype._rootIsInDom = function () {\n    return !this.root || containsDeep(document, this.root);\n  };\n\n  /**\n   * Returns whether or not the target element is a child of root.\n   * @param {Element} target The target element to check.\n   * @return {boolean} True if the target element is a child of root.\n   * @private\n   */\n  IntersectionObserver.prototype._rootContainsTarget = function (target) {\n    var rootDoc = this.root && (this.root.ownerDocument || this.root) || document;\n    return containsDeep(rootDoc, target) && (!this.root || rootDoc == target.ownerDocument);\n  };\n\n  /**\n   * Adds the instance to the global IntersectionObserver registry if it isn't\n   * already present.\n   * @private\n   */\n  IntersectionObserver.prototype._registerInstance = function () {\n    if (registry.indexOf(this) < 0) {\n      registry.push(this);\n    }\n  };\n\n  /**\n   * Removes the instance from the global IntersectionObserver registry.\n   * @private\n   */\n  IntersectionObserver.prototype._unregisterInstance = function () {\n    var index = registry.indexOf(this);\n    if (index != -1) registry.splice(index, 1);\n  };\n\n  /**\n   * Returns the result of the performance.now() method or null in browsers\n   * that don't support the API.\n   * @return {number} The elapsed time since the page was requested.\n   */\n  function now() {\n    return window.performance && performance.now && performance.now();\n  }\n\n  /**\n   * Throttles a function and delays its execution, so it's only called at most\n   * once within a given time period.\n   * @param {Function} fn The function to throttle.\n   * @param {number} timeout The amount of time that must pass before the\n   *     function can be called again.\n   * @return {Function} The throttled function.\n   */\n  function throttle(fn, timeout) {\n    var timer = null;\n    return function () {\n      if (!timer) {\n        timer = setTimeout(function () {\n          fn();\n          timer = null;\n        }, timeout);\n      }\n    };\n  }\n\n  /**\n   * Adds an event handler to a DOM node ensuring cross-browser compatibility.\n   * @param {Node} node The DOM node to add the event handler to.\n   * @param {string} event The event name.\n   * @param {Function} fn The event handler to add.\n   * @param {boolean} opt_useCapture Optionally adds the even to the capture\n   *     phase. Note: this only works in modern browsers.\n   */\n  function addEvent(node, event, fn, opt_useCapture) {\n    if (typeof node.addEventListener == 'function') {\n      node.addEventListener(event, fn, opt_useCapture || false);\n    } else if (typeof node.attachEvent == 'function') {\n      node.attachEvent('on' + event, fn);\n    }\n  }\n\n  /**\n   * Removes a previously added event handler from a DOM node.\n   * @param {Node} node The DOM node to remove the event handler from.\n   * @param {string} event The event name.\n   * @param {Function} fn The event handler to remove.\n   * @param {boolean} opt_useCapture If the event handler was added with this\n   *     flag set to true, it should be set to true here in order to remove it.\n   */\n  function removeEvent(node, event, fn, opt_useCapture) {\n    if (typeof node.removeEventListener == 'function') {\n      node.removeEventListener(event, fn, opt_useCapture || false);\n    } else if (typeof node.detachEvent == 'function') {\n      node.detachEvent('on' + event, fn);\n    }\n  }\n\n  /**\n   * Returns the intersection between two rect objects.\n   * @param {Object} rect1 The first rect.\n   * @param {Object} rect2 The second rect.\n   * @return {?Object|?ClientRect} The intersection rect or undefined if no\n   *     intersection is found.\n   */\n  function computeRectIntersection(rect1, rect2) {\n    var top = Math.max(rect1.top, rect2.top);\n    var bottom = Math.min(rect1.bottom, rect2.bottom);\n    var left = Math.max(rect1.left, rect2.left);\n    var right = Math.min(rect1.right, rect2.right);\n    var width = right - left;\n    var height = bottom - top;\n    return width >= 0 && height >= 0 && {\n      top: top,\n      bottom: bottom,\n      left: left,\n      right: right,\n      width: width,\n      height: height\n    } || null;\n  }\n\n  /**\n   * Shims the native getBoundingClientRect for compatibility with older IE.\n   * @param {Element} el The element whose bounding rect to get.\n   * @return {DOMRect|ClientRect} The (possibly shimmed) rect of the element.\n   */\n  function getBoundingClientRect(el) {\n    var rect;\n    try {\n      rect = el.getBoundingClientRect();\n    } catch (err) {\n      // Ignore Windows 7 IE11 \"Unspecified error\"\n      // https://github.com/w3c/IntersectionObserver/pull/205\n    }\n    if (!rect) return getEmptyRect();\n\n    // Older IE\n    if (!(rect.width && rect.height)) {\n      rect = {\n        top: rect.top,\n        right: rect.right,\n        bottom: rect.bottom,\n        left: rect.left,\n        width: rect.right - rect.left,\n        height: rect.bottom - rect.top\n      };\n    }\n    return rect;\n  }\n\n  /**\n   * Returns an empty rect object. An empty rect is returned when an element\n   * is not in the DOM.\n   * @return {ClientRect} The empty rect.\n   */\n  function getEmptyRect() {\n    return {\n      top: 0,\n      bottom: 0,\n      left: 0,\n      right: 0,\n      width: 0,\n      height: 0\n    };\n  }\n\n  /**\n   * Ensure that the result has all of the necessary fields of the DOMRect.\n   * Specifically this ensures that `x` and `y` fields are set.\n   *\n   * @param {?DOMRect|?ClientRect} rect\n   * @return {?DOMRect}\n   */\n  function ensureDOMRect(rect) {\n    // A `DOMRect` object has `x` and `y` fields.\n    if (!rect || 'x' in rect) {\n      return rect;\n    }\n    // A IE's `ClientRect` type does not have `x` and `y`. The same is the case\n    // for internally calculated Rect objects. For the purposes of\n    // `IntersectionObserver`, it's sufficient to simply mirror `left` and `top`\n    // for these fields.\n    return {\n      top: rect.top,\n      y: rect.top,\n      bottom: rect.bottom,\n      left: rect.left,\n      x: rect.left,\n      right: rect.right,\n      width: rect.width,\n      height: rect.height\n    };\n  }\n\n  /**\n   * Inverts the intersection and bounding rect from the parent (frame) BCR to\n   * the local BCR space.\n   * @param {DOMRect|ClientRect} parentBoundingRect The parent's bound client rect.\n   * @param {DOMRect|ClientRect} parentIntersectionRect The parent's own intersection rect.\n   * @return {ClientRect} The local root bounding rect for the parent's children.\n   */\n  function convertFromParentRect(parentBoundingRect, parentIntersectionRect) {\n    var top = parentIntersectionRect.top - parentBoundingRect.top;\n    var left = parentIntersectionRect.left - parentBoundingRect.left;\n    return {\n      top: top,\n      left: left,\n      height: parentIntersectionRect.height,\n      width: parentIntersectionRect.width,\n      bottom: top + parentIntersectionRect.height,\n      right: left + parentIntersectionRect.width\n    };\n  }\n\n  /**\n   * Checks to see if a parent element contains a child element (including inside\n   * shadow DOM).\n   * @param {Node} parent The parent element.\n   * @param {Node} child The child element.\n   * @return {boolean} True if the parent node contains the child node.\n   */\n  function containsDeep(parent, child) {\n    var node = child;\n    while (node) {\n      if (node == parent) return true;\n      node = getParentNode(node);\n    }\n    return false;\n  }\n\n  /**\n   * Gets the parent node of an element or its host element if the parent node\n   * is a shadow root.\n   * @param {Node} node The node whose parent to get.\n   * @return {Node|null} The parent node or null if no parent exists.\n   */\n  function getParentNode(node) {\n    var parent = node.parentNode;\n    if (node.nodeType == /* DOCUMENT */9 && node != document) {\n      // If this node is a document node, look for the embedding frame.\n      return getFrameElement(node);\n    }\n\n    // If the parent has element that is assigned through shadow root slot\n    if (parent && parent.assignedSlot) {\n      parent = parent.assignedSlot.parentNode;\n    }\n    if (parent && parent.nodeType == 11 && parent.host) {\n      // If the parent is a shadow root, return the host element.\n      return parent.host;\n    }\n    return parent;\n  }\n\n  /**\n   * Returns true if `node` is a Document.\n   * @param {!Node} node\n   * @returns {boolean}\n   */\n  function isDoc(node) {\n    return node && node.nodeType === 9;\n  }\n\n  // Exposes the constructors globally.\n  window.IntersectionObserver = IntersectionObserver;\n  window.IntersectionObserverEntry = IntersectionObserverEntry;\n})();","'use strict';\n\n/**\n * @license Angular v<unknown>\n * (c) 2010-2024 Google LLC. https://angular.io/\n * License: MIT\n */\nconst global = globalThis;\n// __Zone_symbol_prefix global can be used to override the default zone\n// symbol prefix with a custom one if needed.\nfunction __symbol__(name) {\n  const symbolPrefix = global['__Zone_symbol_prefix'] || '__zone_symbol__';\n  return symbolPrefix + name;\n}\nfunction initZone() {\n  const performance = global['performance'];\n  function mark(name) {\n    performance && performance['mark'] && performance['mark'](name);\n  }\n  function performanceMeasure(name, label) {\n    performance && performance['measure'] && performance['measure'](name, label);\n  }\n  mark('Zone');\n  let ZoneImpl = /*#__PURE__*/(() => {\n    class ZoneImpl {\n      // tslint:disable-next-line:require-internal-with-underscore\n      static {\n        this.__symbol__ = __symbol__;\n      }\n      static assertZonePatched() {\n        if (global['Promise'] !== patches['ZoneAwarePromise']) {\n          throw new Error('Zone.js has detected that ZoneAwarePromise `(window|global).Promise` ' + 'has been overwritten.\\n' + 'Most likely cause is that a Promise polyfill has been loaded ' + 'after Zone.js (Polyfilling Promise api is not necessary when zone.js is loaded. ' + 'If you must load one, do so before loading zone.js.)');\n        }\n      }\n      static get root() {\n        let zone = ZoneImpl.current;\n        while (zone.parent) {\n          zone = zone.parent;\n        }\n        return zone;\n      }\n      static get current() {\n        return _currentZoneFrame.zone;\n      }\n      static get currentTask() {\n        return _currentTask;\n      }\n      // tslint:disable-next-line:require-internal-with-underscore\n      static __load_patch(name, fn, ignoreDuplicate = false) {\n        if (patches.hasOwnProperty(name)) {\n          // `checkDuplicate` option is defined from global variable\n          // so it works for all modules.\n          // `ignoreDuplicate` can work for the specified module\n          const checkDuplicate = global[__symbol__('forceDuplicateZoneCheck')] === true;\n          if (!ignoreDuplicate && checkDuplicate) {\n            throw Error('Already loaded patch: ' + name);\n          }\n        } else if (!global['__Zone_disable_' + name]) {\n          const perfName = 'Zone:' + name;\n          mark(perfName);\n          patches[name] = fn(global, ZoneImpl, _api);\n          performanceMeasure(perfName, perfName);\n        }\n      }\n      get parent() {\n        return this._parent;\n      }\n      get name() {\n        return this._name;\n      }\n      constructor(parent, zoneSpec) {\n        this._parent = parent;\n        this._name = zoneSpec ? zoneSpec.name || 'unnamed' : '<root>';\n        this._properties = zoneSpec && zoneSpec.properties || {};\n        this._zoneDelegate = new _ZoneDelegate(this, this._parent && this._parent._zoneDelegate, zoneSpec);\n      }\n      get(key) {\n        const zone = this.getZoneWith(key);\n        if (zone) return zone._properties[key];\n      }\n      getZoneWith(key) {\n        let current = this;\n        while (current) {\n          if (current._properties.hasOwnProperty(key)) {\n            return current;\n          }\n          current = current._parent;\n        }\n        return null;\n      }\n      fork(zoneSpec) {\n        if (!zoneSpec) throw new Error('ZoneSpec required!');\n        return this._zoneDelegate.fork(this, zoneSpec);\n      }\n      wrap(callback, source) {\n        if (typeof callback !== 'function') {\n          throw new Error('Expecting function got: ' + callback);\n        }\n        const _callback = this._zoneDelegate.intercept(this, callback, source);\n        const zone = this;\n        return function () {\n          return zone.runGuarded(_callback, this, arguments, source);\n        };\n      }\n      run(callback, applyThis, applyArgs, source) {\n        _currentZoneFrame = {\n          parent: _currentZoneFrame,\n          zone: this\n        };\n        try {\n          return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);\n        } finally {\n          _currentZoneFrame = _currentZoneFrame.parent;\n        }\n      }\n      runGuarded(callback, applyThis = null, applyArgs, source) {\n        _currentZoneFrame = {\n          parent: _currentZoneFrame,\n          zone: this\n        };\n        try {\n          try {\n            return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);\n          } catch (error) {\n            if (this._zoneDelegate.handleError(this, error)) {\n              throw error;\n            }\n          }\n        } finally {\n          _currentZoneFrame = _currentZoneFrame.parent;\n        }\n      }\n      runTask(task, applyThis, applyArgs) {\n        if (task.zone != this) {\n          throw new Error('A task can only be run in the zone of creation! (Creation: ' + (task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');\n        }\n        const zoneTask = task;\n        // https://github.com/angular/zone.js/issues/778, sometimes eventTask\n        // will run in notScheduled(canceled) state, we should not try to\n        // run such kind of task but just return\n        const {\n          type,\n          data: {\n            isPeriodic = false,\n            isRefreshable = false\n          } = {}\n        } = task;\n        if (task.state === notScheduled && (type === eventTask || type === macroTask)) {\n          return;\n        }\n        const reEntryGuard = task.state != running;\n        reEntryGuard && zoneTask._transitionTo(running, scheduled);\n        const previousTask = _currentTask;\n        _currentTask = zoneTask;\n        _currentZoneFrame = {\n          parent: _currentZoneFrame,\n          zone: this\n        };\n        try {\n          if (type == macroTask && task.data && !isPeriodic && !isRefreshable) {\n            task.cancelFn = undefined;\n          }\n          try {\n            return this._zoneDelegate.invokeTask(this, zoneTask, applyThis, applyArgs);\n          } catch (error) {\n            if (this._zoneDelegate.handleError(this, error)) {\n              throw error;\n            }\n          }\n        } finally {\n          // if the task's state is notScheduled or unknown, then it has already been cancelled\n          // we should not reset the state to scheduled\n          const state = task.state;\n          if (state !== notScheduled && state !== unknown) {\n            if (type == eventTask || isPeriodic || isRefreshable && state === scheduling) {\n              reEntryGuard && zoneTask._transitionTo(scheduled, running, scheduling);\n            } else {\n              const zoneDelegates = zoneTask._zoneDelegates;\n              this._updateTaskCount(zoneTask, -1);\n              reEntryGuard && zoneTask._transitionTo(notScheduled, running, notScheduled);\n              if (isRefreshable) {\n                zoneTask._zoneDelegates = zoneDelegates;\n              }\n            }\n          }\n          _currentZoneFrame = _currentZoneFrame.parent;\n          _currentTask = previousTask;\n        }\n      }\n      scheduleTask(task) {\n        if (task.zone && task.zone !== this) {\n          // check if the task was rescheduled, the newZone\n          // should not be the children of the original zone\n          let newZone = this;\n          while (newZone) {\n            if (newZone === task.zone) {\n              throw Error(`can not reschedule task to ${this.name} which is descendants of the original zone ${task.zone.name}`);\n            }\n            newZone = newZone.parent;\n          }\n        }\n        task._transitionTo(scheduling, notScheduled);\n        const zoneDelegates = [];\n        task._zoneDelegates = zoneDelegates;\n        task._zone = this;\n        try {\n          task = this._zoneDelegate.scheduleTask(this, task);\n        } catch (err) {\n          // should set task's state to unknown when scheduleTask throw error\n          // because the err may from reschedule, so the fromState maybe notScheduled\n          task._transitionTo(unknown, scheduling, notScheduled);\n          // TODO: @JiaLiPassion, should we check the result from handleError?\n          this._zoneDelegate.handleError(this, err);\n          throw err;\n        }\n        if (task._zoneDelegates === zoneDelegates) {\n          // we have to check because internally the delegate can reschedule the task.\n          this._updateTaskCount(task, 1);\n        }\n        if (task.state == scheduling) {\n          task._transitionTo(scheduled, scheduling);\n        }\n        return task;\n      }\n      scheduleMicroTask(source, callback, data, customSchedule) {\n        return this.scheduleTask(new ZoneTask(microTask, source, callback, data, customSchedule, undefined));\n      }\n      scheduleMacroTask(source, callback, data, customSchedule, customCancel) {\n        return this.scheduleTask(new ZoneTask(macroTask, source, callback, data, customSchedule, customCancel));\n      }\n      scheduleEventTask(source, callback, data, customSchedule, customCancel) {\n        return this.scheduleTask(new ZoneTask(eventTask, source, callback, data, customSchedule, customCancel));\n      }\n      cancelTask(task) {\n        if (task.zone != this) throw new Error('A task can only be cancelled in the zone of creation! (Creation: ' + (task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');\n        if (task.state !== scheduled && task.state !== running) {\n          return;\n        }\n        task._transitionTo(canceling, scheduled, running);\n        try {\n          this._zoneDelegate.cancelTask(this, task);\n        } catch (err) {\n          // if error occurs when cancelTask, transit the state to unknown\n          task._transitionTo(unknown, canceling);\n          this._zoneDelegate.handleError(this, err);\n          throw err;\n        }\n        this._updateTaskCount(task, -1);\n        task._transitionTo(notScheduled, canceling);\n        task.runCount = -1;\n        return task;\n      }\n      _updateTaskCount(task, count) {\n        const zoneDelegates = task._zoneDelegates;\n        if (count == -1) {\n          task._zoneDelegates = null;\n        }\n        for (let i = 0; i < zoneDelegates.length; i++) {\n          zoneDelegates[i]._updateTaskCount(task.type, count);\n        }\n      }\n    }\n    return ZoneImpl;\n  })();\n  const DELEGATE_ZS = {\n    name: '',\n    onHasTask: (delegate, _, target, hasTaskState) => delegate.hasTask(target, hasTaskState),\n    onScheduleTask: (delegate, _, target, task) => delegate.scheduleTask(target, task),\n    onInvokeTask: (delegate, _, target, task, applyThis, applyArgs) => delegate.invokeTask(target, task, applyThis, applyArgs),\n    onCancelTask: (delegate, _, target, task) => delegate.cancelTask(target, task)\n  };\n  class _ZoneDelegate {\n    get zone() {\n      return this._zone;\n    }\n    constructor(zone, parentDelegate, zoneSpec) {\n      this._taskCounts = {\n        'microTask': 0,\n        'macroTask': 0,\n        'eventTask': 0\n      };\n      this._zone = zone;\n      this._parentDelegate = parentDelegate;\n      this._forkZS = zoneSpec && (zoneSpec && zoneSpec.onFork ? zoneSpec : parentDelegate._forkZS);\n      this._forkDlgt = zoneSpec && (zoneSpec.onFork ? parentDelegate : parentDelegate._forkDlgt);\n      this._forkCurrZone = zoneSpec && (zoneSpec.onFork ? this._zone : parentDelegate._forkCurrZone);\n      this._interceptZS = zoneSpec && (zoneSpec.onIntercept ? zoneSpec : parentDelegate._interceptZS);\n      this._interceptDlgt = zoneSpec && (zoneSpec.onIntercept ? parentDelegate : parentDelegate._interceptDlgt);\n      this._interceptCurrZone = zoneSpec && (zoneSpec.onIntercept ? this._zone : parentDelegate._interceptCurrZone);\n      this._invokeZS = zoneSpec && (zoneSpec.onInvoke ? zoneSpec : parentDelegate._invokeZS);\n      this._invokeDlgt = zoneSpec && (zoneSpec.onInvoke ? parentDelegate : parentDelegate._invokeDlgt);\n      this._invokeCurrZone = zoneSpec && (zoneSpec.onInvoke ? this._zone : parentDelegate._invokeCurrZone);\n      this._handleErrorZS = zoneSpec && (zoneSpec.onHandleError ? zoneSpec : parentDelegate._handleErrorZS);\n      this._handleErrorDlgt = zoneSpec && (zoneSpec.onHandleError ? parentDelegate : parentDelegate._handleErrorDlgt);\n      this._handleErrorCurrZone = zoneSpec && (zoneSpec.onHandleError ? this._zone : parentDelegate._handleErrorCurrZone);\n      this._scheduleTaskZS = zoneSpec && (zoneSpec.onScheduleTask ? zoneSpec : parentDelegate._scheduleTaskZS);\n      this._scheduleTaskDlgt = zoneSpec && (zoneSpec.onScheduleTask ? parentDelegate : parentDelegate._scheduleTaskDlgt);\n      this._scheduleTaskCurrZone = zoneSpec && (zoneSpec.onScheduleTask ? this._zone : parentDelegate._scheduleTaskCurrZone);\n      this._invokeTaskZS = zoneSpec && (zoneSpec.onInvokeTask ? zoneSpec : parentDelegate._invokeTaskZS);\n      this._invokeTaskDlgt = zoneSpec && (zoneSpec.onInvokeTask ? parentDelegate : parentDelegate._invokeTaskDlgt);\n      this._invokeTaskCurrZone = zoneSpec && (zoneSpec.onInvokeTask ? this._zone : parentDelegate._invokeTaskCurrZone);\n      this._cancelTaskZS = zoneSpec && (zoneSpec.onCancelTask ? zoneSpec : parentDelegate._cancelTaskZS);\n      this._cancelTaskDlgt = zoneSpec && (zoneSpec.onCancelTask ? parentDelegate : parentDelegate._cancelTaskDlgt);\n      this._cancelTaskCurrZone = zoneSpec && (zoneSpec.onCancelTask ? this._zone : parentDelegate._cancelTaskCurrZone);\n      this._hasTaskZS = null;\n      this._hasTaskDlgt = null;\n      this._hasTaskDlgtOwner = null;\n      this._hasTaskCurrZone = null;\n      const zoneSpecHasTask = zoneSpec && zoneSpec.onHasTask;\n      const parentHasTask = parentDelegate && parentDelegate._hasTaskZS;\n      if (zoneSpecHasTask || parentHasTask) {\n        // If we need to report hasTask, than this ZS needs to do ref counting on tasks. In such\n        // a case all task related interceptors must go through this ZD. We can't short circuit it.\n        this._hasTaskZS = zoneSpecHasTask ? zoneSpec : DELEGATE_ZS;\n        this._hasTaskDlgt = parentDelegate;\n        this._hasTaskDlgtOwner = this;\n        this._hasTaskCurrZone = this._zone;\n        if (!zoneSpec.onScheduleTask) {\n          this._scheduleTaskZS = DELEGATE_ZS;\n          this._scheduleTaskDlgt = parentDelegate;\n          this._scheduleTaskCurrZone = this._zone;\n        }\n        if (!zoneSpec.onInvokeTask) {\n          this._invokeTaskZS = DELEGATE_ZS;\n          this._invokeTaskDlgt = parentDelegate;\n          this._invokeTaskCurrZone = this._zone;\n        }\n        if (!zoneSpec.onCancelTask) {\n          this._cancelTaskZS = DELEGATE_ZS;\n          this._cancelTaskDlgt = parentDelegate;\n          this._cancelTaskCurrZone = this._zone;\n        }\n      }\n    }\n    fork(targetZone, zoneSpec) {\n      return this._forkZS ? this._forkZS.onFork(this._forkDlgt, this.zone, targetZone, zoneSpec) : new ZoneImpl(targetZone, zoneSpec);\n    }\n    intercept(targetZone, callback, source) {\n      return this._interceptZS ? this._interceptZS.onIntercept(this._interceptDlgt, this._interceptCurrZone, targetZone, callback, source) : callback;\n    }\n    invoke(targetZone, callback, applyThis, applyArgs, source) {\n      return this._invokeZS ? this._invokeZS.onInvoke(this._invokeDlgt, this._invokeCurrZone, targetZone, callback, applyThis, applyArgs, source) : callback.apply(applyThis, applyArgs);\n    }\n    handleError(targetZone, error) {\n      return this._handleErrorZS ? this._handleErrorZS.onHandleError(this._handleErrorDlgt, this._handleErrorCurrZone, targetZone, error) : true;\n    }\n    scheduleTask(targetZone, task) {\n      let returnTask = task;\n      if (this._scheduleTaskZS) {\n        if (this._hasTaskZS) {\n          returnTask._zoneDelegates.push(this._hasTaskDlgtOwner);\n        }\n        returnTask = this._scheduleTaskZS.onScheduleTask(this._scheduleTaskDlgt, this._scheduleTaskCurrZone, targetZone, task);\n        if (!returnTask) returnTask = task;\n      } else {\n        if (task.scheduleFn) {\n          task.scheduleFn(task);\n        } else if (task.type == microTask) {\n          scheduleMicroTask(task);\n        } else {\n          throw new Error('Task is missing scheduleFn.');\n        }\n      }\n      return returnTask;\n    }\n    invokeTask(targetZone, task, applyThis, applyArgs) {\n      return this._invokeTaskZS ? this._invokeTaskZS.onInvokeTask(this._invokeTaskDlgt, this._invokeTaskCurrZone, targetZone, task, applyThis, applyArgs) : task.callback.apply(applyThis, applyArgs);\n    }\n    cancelTask(targetZone, task) {\n      let value;\n      if (this._cancelTaskZS) {\n        value = this._cancelTaskZS.onCancelTask(this._cancelTaskDlgt, this._cancelTaskCurrZone, targetZone, task);\n      } else {\n        if (!task.cancelFn) {\n          throw Error('Task is not cancelable');\n        }\n        value = task.cancelFn(task);\n      }\n      return value;\n    }\n    hasTask(targetZone, isEmpty) {\n      // hasTask should not throw error so other ZoneDelegate\n      // can still trigger hasTask callback\n      try {\n        this._hasTaskZS && this._hasTaskZS.onHasTask(this._hasTaskDlgt, this._hasTaskCurrZone, targetZone, isEmpty);\n      } catch (err) {\n        this.handleError(targetZone, err);\n      }\n    }\n    // tslint:disable-next-line:require-internal-with-underscore\n    _updateTaskCount(type, count) {\n      const counts = this._taskCounts;\n      const prev = counts[type];\n      const next = counts[type] = prev + count;\n      if (next < 0) {\n        throw new Error('More tasks executed then were scheduled.');\n      }\n      if (prev == 0 || next == 0) {\n        const isEmpty = {\n          microTask: counts['microTask'] > 0,\n          macroTask: counts['macroTask'] > 0,\n          eventTask: counts['eventTask'] > 0,\n          change: type\n        };\n        this.hasTask(this._zone, isEmpty);\n      }\n    }\n  }\n  class ZoneTask {\n    constructor(type, source, callback, options, scheduleFn, cancelFn) {\n      // tslint:disable-next-line:require-internal-with-underscore\n      this._zone = null;\n      this.runCount = 0;\n      // tslint:disable-next-line:require-internal-with-underscore\n      this._zoneDelegates = null;\n      // tslint:disable-next-line:require-internal-with-underscore\n      this._state = 'notScheduled';\n      this.type = type;\n      this.source = source;\n      this.data = options;\n      this.scheduleFn = scheduleFn;\n      this.cancelFn = cancelFn;\n      if (!callback) {\n        throw new Error('callback is not defined');\n      }\n      this.callback = callback;\n      const self = this;\n      // TODO: @JiaLiPassion options should have interface\n      if (type === eventTask && options && options.useG) {\n        this.invoke = ZoneTask.invokeTask;\n      } else {\n        this.invoke = function () {\n          return ZoneTask.invokeTask.call(global, self, this, arguments);\n        };\n      }\n    }\n    static invokeTask(task, target, args) {\n      if (!task) {\n        task = this;\n      }\n      _numberOfNestedTaskFrames++;\n      try {\n        task.runCount++;\n        return task.zone.runTask(task, target, args);\n      } finally {\n        if (_numberOfNestedTaskFrames == 1) {\n          drainMicroTaskQueue();\n        }\n        _numberOfNestedTaskFrames--;\n      }\n    }\n    get zone() {\n      return this._zone;\n    }\n    get state() {\n      return this._state;\n    }\n    cancelScheduleRequest() {\n      this._transitionTo(notScheduled, scheduling);\n    }\n    // tslint:disable-next-line:require-internal-with-underscore\n    _transitionTo(toState, fromState1, fromState2) {\n      if (this._state === fromState1 || this._state === fromState2) {\n        this._state = toState;\n        if (toState == notScheduled) {\n          this._zoneDelegates = null;\n        }\n      } else {\n        throw new Error(`${this.type} '${this.source}': can not transition to '${toState}', expecting state '${fromState1}'${fromState2 ? \" or '\" + fromState2 + \"'\" : ''}, was '${this._state}'.`);\n      }\n    }\n    toString() {\n      if (this.data && typeof this.data.handleId !== 'undefined') {\n        return this.data.handleId.toString();\n      } else {\n        return Object.prototype.toString.call(this);\n      }\n    }\n    // add toJSON method to prevent cyclic error when\n    // call JSON.stringify(zoneTask)\n    toJSON() {\n      return {\n        type: this.type,\n        state: this.state,\n        source: this.source,\n        zone: this.zone.name,\n        runCount: this.runCount\n      };\n    }\n  }\n  //////////////////////////////////////////////////////\n  //////////////////////////////////////////////////////\n  ///  MICROTASK QUEUE\n  //////////////////////////////////////////////////////\n  //////////////////////////////////////////////////////\n  const symbolSetTimeout = __symbol__('setTimeout');\n  const symbolPromise = __symbol__('Promise');\n  const symbolThen = __symbol__('then');\n  let _microTaskQueue = [];\n  let _isDrainingMicrotaskQueue = false;\n  let nativeMicroTaskQueuePromise;\n  function nativeScheduleMicroTask(func) {\n    if (!nativeMicroTaskQueuePromise) {\n      if (global[symbolPromise]) {\n        nativeMicroTaskQueuePromise = global[symbolPromise].resolve(0);\n      }\n    }\n    if (nativeMicroTaskQueuePromise) {\n      let nativeThen = nativeMicroTaskQueuePromise[symbolThen];\n      if (!nativeThen) {\n        // native Promise is not patchable, we need to use `then` directly\n        // issue 1078\n        nativeThen = nativeMicroTaskQueuePromise['then'];\n      }\n      nativeThen.call(nativeMicroTaskQueuePromise, func);\n    } else {\n      global[symbolSetTimeout](func, 0);\n    }\n  }\n  function scheduleMicroTask(task) {\n    // if we are not running in any task, and there has not been anything scheduled\n    // we must bootstrap the initial task creation by manually scheduling the drain\n    if (_numberOfNestedTaskFrames === 0 && _microTaskQueue.length === 0) {\n      // We are not running in Task, so we need to kickstart the microtask queue.\n      nativeScheduleMicroTask(drainMicroTaskQueue);\n    }\n    task && _microTaskQueue.push(task);\n  }\n  function drainMicroTaskQueue() {\n    if (!_isDrainingMicrotaskQueue) {\n      _isDrainingMicrotaskQueue = true;\n      while (_microTaskQueue.length) {\n        const queue = _microTaskQueue;\n        _microTaskQueue = [];\n        for (let i = 0; i < queue.length; i++) {\n          const task = queue[i];\n          try {\n            task.zone.runTask(task, null, null);\n          } catch (error) {\n            _api.onUnhandledError(error);\n          }\n        }\n      }\n      _api.microtaskDrainDone();\n      _isDrainingMicrotaskQueue = false;\n    }\n  }\n  //////////////////////////////////////////////////////\n  //////////////////////////////////////////////////////\n  ///  BOOTSTRAP\n  //////////////////////////////////////////////////////\n  //////////////////////////////////////////////////////\n  const NO_ZONE = {\n    name: 'NO ZONE'\n  };\n  const notScheduled = 'notScheduled',\n    scheduling = 'scheduling',\n    scheduled = 'scheduled',\n    running = 'running',\n    canceling = 'canceling',\n    unknown = 'unknown';\n  const microTask = 'microTask',\n    macroTask = 'macroTask',\n    eventTask = 'eventTask';\n  const patches = {};\n  const _api = {\n    symbol: __symbol__,\n    currentZoneFrame: () => _currentZoneFrame,\n    onUnhandledError: noop,\n    microtaskDrainDone: noop,\n    scheduleMicroTask: scheduleMicroTask,\n    showUncaughtError: () => !ZoneImpl[__symbol__('ignoreConsoleErrorUncaughtError')],\n    patchEventTarget: () => [],\n    patchOnProperties: noop,\n    patchMethod: () => noop,\n    bindArguments: () => [],\n    patchThen: () => noop,\n    patchMacroTask: () => noop,\n    patchEventPrototype: () => noop,\n    isIEOrEdge: () => false,\n    getGlobalObjects: () => undefined,\n    ObjectDefineProperty: () => noop,\n    ObjectGetOwnPropertyDescriptor: () => undefined,\n    ObjectCreate: () => undefined,\n    ArraySlice: () => [],\n    patchClass: () => noop,\n    wrapWithCurrentZone: () => noop,\n    filterProperties: () => [],\n    attachOriginToPatched: () => noop,\n    _redefineProperty: () => noop,\n    patchCallbacks: () => noop,\n    nativeScheduleMicroTask: nativeScheduleMicroTask\n  };\n  let _currentZoneFrame = {\n    parent: null,\n    zone: new ZoneImpl(null, null)\n  };\n  let _currentTask = null;\n  let _numberOfNestedTaskFrames = 0;\n  function noop() {}\n  performanceMeasure('Zone', 'Zone');\n  return ZoneImpl;\n}\nfunction loadZone() {\n  // if global['Zone'] already exists (maybe zone.js was already loaded or\n  // some other lib also registered a global object named Zone), we may need\n  // to throw an error, but sometimes user may not want this error.\n  // For example,\n  // we have two web pages, page1 includes zone.js, page2 doesn't.\n  // and the 1st time user load page1 and page2, everything work fine,\n  // but when user load page2 again, error occurs because global['Zone'] already exists.\n  // so we add a flag to let user choose whether to throw this error or not.\n  // By default, if existing Zone is from zone.js, we will not throw the error.\n  const global = globalThis;\n  const checkDuplicate = global[__symbol__('forceDuplicateZoneCheck')] === true;\n  if (global['Zone'] && (checkDuplicate || typeof global['Zone'].__symbol__ !== 'function')) {\n    throw new Error('Zone already loaded.');\n  }\n  // Initialize global `Zone` constant.\n  global['Zone'] ??= initZone();\n  return global['Zone'];\n}\n\n/**\n * Suppress closure compiler errors about unknown 'Zone' variable\n * @fileoverview\n * @suppress {undefinedVars,globalThis,missingRequire}\n */\n// issue #989, to reduce bundle size, use short name\n/** Object.getOwnPropertyDescriptor */\nconst ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n/** Object.defineProperty */\nconst ObjectDefineProperty = Object.defineProperty;\n/** Object.getPrototypeOf */\nconst ObjectGetPrototypeOf = Object.getPrototypeOf;\n/** Object.create */\nconst ObjectCreate = Object.create;\n/** Array.prototype.slice */\nconst ArraySlice = Array.prototype.slice;\n/** addEventListener string const */\nconst ADD_EVENT_LISTENER_STR = 'addEventListener';\n/** removeEventListener string const */\nconst REMOVE_EVENT_LISTENER_STR = 'removeEventListener';\n/** zoneSymbol addEventListener */\nconst ZONE_SYMBOL_ADD_EVENT_LISTENER = __symbol__(ADD_EVENT_LISTENER_STR);\n/** zoneSymbol removeEventListener */\nconst ZONE_SYMBOL_REMOVE_EVENT_LISTENER = __symbol__(REMOVE_EVENT_LISTENER_STR);\n/** true string const */\nconst TRUE_STR = 'true';\n/** false string const */\nconst FALSE_STR = 'false';\n/** Zone symbol prefix string const. */\nconst ZONE_SYMBOL_PREFIX = __symbol__('');\nfunction wrapWithCurrentZone(callback, source) {\n  return Zone.current.wrap(callback, source);\n}\nfunction scheduleMacroTaskWithCurrentZone(source, callback, data, customSchedule, customCancel) {\n  return Zone.current.scheduleMacroTask(source, callback, data, customSchedule, customCancel);\n}\nconst zoneSymbol = __symbol__;\nconst isWindowExists = typeof window !== 'undefined';\nconst internalWindow = isWindowExists ? window : undefined;\nconst _global = isWindowExists && internalWindow || globalThis;\nconst REMOVE_ATTRIBUTE = 'removeAttribute';\nfunction bindArguments(args, source) {\n  for (let i = args.length - 1; i >= 0; i--) {\n    if (typeof args[i] === 'function') {\n      args[i] = wrapWithCurrentZone(args[i], source + '_' + i);\n    }\n  }\n  return args;\n}\nfunction patchPrototype(prototype, fnNames) {\n  const source = prototype.constructor['name'];\n  for (let i = 0; i < fnNames.length; i++) {\n    const name = fnNames[i];\n    const delegate = prototype[name];\n    if (delegate) {\n      const prototypeDesc = ObjectGetOwnPropertyDescriptor(prototype, name);\n      if (!isPropertyWritable(prototypeDesc)) {\n        continue;\n      }\n      prototype[name] = (delegate => {\n        const patched = function () {\n          return delegate.apply(this, bindArguments(arguments, source + '.' + name));\n        };\n        attachOriginToPatched(patched, delegate);\n        return patched;\n      })(delegate);\n    }\n  }\n}\nfunction isPropertyWritable(propertyDesc) {\n  if (!propertyDesc) {\n    return true;\n  }\n  if (propertyDesc.writable === false) {\n    return false;\n  }\n  return !(typeof propertyDesc.get === 'function' && typeof propertyDesc.set === 'undefined');\n}\nconst isWebWorker = typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope;\n// Make sure to access `process` through `_global` so that WebPack does not accidentally browserify\n// this code.\nconst isNode = !('nw' in _global) && typeof _global.process !== 'undefined' && _global.process.toString() === '[object process]';\nconst isBrowser = !isNode && !isWebWorker && !!(isWindowExists && internalWindow['HTMLElement']);\n// we are in electron of nw, so we are both browser and nodejs\n// Make sure to access `process` through `_global` so that WebPack does not accidentally browserify\n// this code.\nconst isMix = typeof _global.process !== 'undefined' && _global.process.toString() === '[object process]' && !isWebWorker && !!(isWindowExists && internalWindow['HTMLElement']);\nconst zoneSymbolEventNames$1 = {};\nconst enableBeforeunloadSymbol = zoneSymbol('enable_beforeunload');\nconst wrapFn = function (event) {\n  // https://github.com/angular/zone.js/issues/911, in IE, sometimes\n  // event will be undefined, so we need to use window.event\n  event = event || _global.event;\n  if (!event) {\n    return;\n  }\n  let eventNameSymbol = zoneSymbolEventNames$1[event.type];\n  if (!eventNameSymbol) {\n    eventNameSymbol = zoneSymbolEventNames$1[event.type] = zoneSymbol('ON_PROPERTY' + event.type);\n  }\n  const target = this || event.target || _global;\n  const listener = target[eventNameSymbol];\n  let result;\n  if (isBrowser && target === internalWindow && event.type === 'error') {\n    // window.onerror have different signature\n    // https://developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/onerror#window.onerror\n    // and onerror callback will prevent default when callback return true\n    const errorEvent = event;\n    result = listener && listener.call(this, errorEvent.message, errorEvent.filename, errorEvent.lineno, errorEvent.colno, errorEvent.error);\n    if (result === true) {\n      event.preventDefault();\n    }\n  } else {\n    result = listener && listener.apply(this, arguments);\n    if (\n    // https://github.com/angular/angular/issues/47579\n    // https://www.w3.org/TR/2011/WD-html5-20110525/history.html#beforeunloadevent\n    // This is the only specific case we should check for. The spec defines that the\n    // `returnValue` attribute represents the message to show the user. When the event\n    // is created, this attribute must be set to the empty string.\n    event.type === 'beforeunload' &&\n    // To prevent any breaking changes resulting from this change, given that\n    // it was already causing a significant number of failures in G3, we have hidden\n    // that behavior behind a global configuration flag. Consumers can enable this\n    // flag explicitly if they want the `beforeunload` event to be handled as defined\n    // in the specification.\n    _global[enableBeforeunloadSymbol] &&\n    // The IDL event definition is `attribute DOMString returnValue`, so we check whether\n    // `typeof result` is a string.\n    typeof result === 'string') {\n      event.returnValue = result;\n    } else if (result != undefined && !result) {\n      event.preventDefault();\n    }\n  }\n  return result;\n};\nfunction patchProperty(obj, prop, prototype) {\n  let desc = ObjectGetOwnPropertyDescriptor(obj, prop);\n  if (!desc && prototype) {\n    // when patch window object, use prototype to check prop exist or not\n    const prototypeDesc = ObjectGetOwnPropertyDescriptor(prototype, prop);\n    if (prototypeDesc) {\n      desc = {\n        enumerable: true,\n        configurable: true\n      };\n    }\n  }\n  // if the descriptor not exists or is not configurable\n  // just return\n  if (!desc || !desc.configurable) {\n    return;\n  }\n  const onPropPatchedSymbol = zoneSymbol('on' + prop + 'patched');\n  if (obj.hasOwnProperty(onPropPatchedSymbol) && obj[onPropPatchedSymbol]) {\n    return;\n  }\n  // A property descriptor cannot have getter/setter and be writable\n  // deleting the writable and value properties avoids this error:\n  //\n  // TypeError: property descriptors must not specify a value or be writable when a\n  // getter or setter has been specified\n  delete desc.writable;\n  delete desc.value;\n  const originalDescGet = desc.get;\n  const originalDescSet = desc.set;\n  // slice(2) cuz 'onclick' -> 'click', etc\n  const eventName = prop.slice(2);\n  let eventNameSymbol = zoneSymbolEventNames$1[eventName];\n  if (!eventNameSymbol) {\n    eventNameSymbol = zoneSymbolEventNames$1[eventName] = zoneSymbol('ON_PROPERTY' + eventName);\n  }\n  desc.set = function (newValue) {\n    // in some of windows's onproperty callback, this is undefined\n    // so we need to check it\n    let target = this;\n    if (!target && obj === _global) {\n      target = _global;\n    }\n    if (!target) {\n      return;\n    }\n    const previousValue = target[eventNameSymbol];\n    if (typeof previousValue === 'function') {\n      target.removeEventListener(eventName, wrapFn);\n    }\n    // issue #978, when onload handler was added before loading zone.js\n    // we should remove it with originalDescSet\n    originalDescSet && originalDescSet.call(target, null);\n    target[eventNameSymbol] = newValue;\n    if (typeof newValue === 'function') {\n      target.addEventListener(eventName, wrapFn, false);\n    }\n  };\n  // The getter would return undefined for unassigned properties but the default value of an\n  // unassigned property is null\n  desc.get = function () {\n    // in some of windows's onproperty callback, this is undefined\n    // so we need to check it\n    let target = this;\n    if (!target && obj === _global) {\n      target = _global;\n    }\n    if (!target) {\n      return null;\n    }\n    const listener = target[eventNameSymbol];\n    if (listener) {\n      return listener;\n    } else if (originalDescGet) {\n      // result will be null when use inline event attribute,\n      // such as <button onclick=\"func();\">OK</button>\n      // because the onclick function is internal raw uncompiled handler\n      // the onclick will be evaluated when first time event was triggered or\n      // the property is accessed, https://github.com/angular/zone.js/issues/525\n      // so we should use original native get to retrieve the handler\n      let value = originalDescGet.call(this);\n      if (value) {\n        desc.set.call(this, value);\n        if (typeof target[REMOVE_ATTRIBUTE] === 'function') {\n          target.removeAttribute(prop);\n        }\n        return value;\n      }\n    }\n    return null;\n  };\n  ObjectDefineProperty(obj, prop, desc);\n  obj[onPropPatchedSymbol] = true;\n}\nfunction patchOnProperties(obj, properties, prototype) {\n  if (properties) {\n    for (let i = 0; i < properties.length; i++) {\n      patchProperty(obj, 'on' + properties[i], prototype);\n    }\n  } else {\n    const onProperties = [];\n    for (const prop in obj) {\n      if (prop.slice(0, 2) == 'on') {\n        onProperties.push(prop);\n      }\n    }\n    for (let j = 0; j < onProperties.length; j++) {\n      patchProperty(obj, onProperties[j], prototype);\n    }\n  }\n}\nconst originalInstanceKey = zoneSymbol('originalInstance');\n// wrap some native API on `window`\nfunction patchClass(className) {\n  const OriginalClass = _global[className];\n  if (!OriginalClass) return;\n  // keep original class in global\n  _global[zoneSymbol(className)] = OriginalClass;\n  _global[className] = function () {\n    const a = bindArguments(arguments, className);\n    switch (a.length) {\n      case 0:\n        this[originalInstanceKey] = new OriginalClass();\n        break;\n      case 1:\n        this[originalInstanceKey] = new OriginalClass(a[0]);\n        break;\n      case 2:\n        this[originalInstanceKey] = new OriginalClass(a[0], a[1]);\n        break;\n      case 3:\n        this[originalInstanceKey] = new OriginalClass(a[0], a[1], a[2]);\n        break;\n      case 4:\n        this[originalInstanceKey] = new OriginalClass(a[0], a[1], a[2], a[3]);\n        break;\n      default:\n        throw new Error('Arg list too long.');\n    }\n  };\n  // attach original delegate to patched function\n  attachOriginToPatched(_global[className], OriginalClass);\n  const instance = new OriginalClass(function () {});\n  let prop;\n  for (prop in instance) {\n    // https://bugs.webkit.org/show_bug.cgi?id=44721\n    if (className === 'XMLHttpRequest' && prop === 'responseBlob') continue;\n    (function (prop) {\n      if (typeof instance[prop] === 'function') {\n        _global[className].prototype[prop] = function () {\n          return this[originalInstanceKey][prop].apply(this[originalInstanceKey], arguments);\n        };\n      } else {\n        ObjectDefineProperty(_global[className].prototype, prop, {\n          set: function (fn) {\n            if (typeof fn === 'function') {\n              this[originalInstanceKey][prop] = wrapWithCurrentZone(fn, className + '.' + prop);\n              // keep callback in wrapped function so we can\n              // use it in Function.prototype.toString to return\n              // the native one.\n              attachOriginToPatched(this[originalInstanceKey][prop], fn);\n            } else {\n              this[originalInstanceKey][prop] = fn;\n            }\n          },\n          get: function () {\n            return this[originalInstanceKey][prop];\n          }\n        });\n      }\n    })(prop);\n  }\n  for (prop in OriginalClass) {\n    if (prop !== 'prototype' && OriginalClass.hasOwnProperty(prop)) {\n      _global[className][prop] = OriginalClass[prop];\n    }\n  }\n}\nfunction patchMethod(target, name, patchFn) {\n  let proto = target;\n  while (proto && !proto.hasOwnProperty(name)) {\n    proto = ObjectGetPrototypeOf(proto);\n  }\n  if (!proto && target[name]) {\n    // somehow we did not find it, but we can see it. This happens on IE for Window properties.\n    proto = target;\n  }\n  const delegateName = zoneSymbol(name);\n  let delegate = null;\n  if (proto && (!(delegate = proto[delegateName]) || !proto.hasOwnProperty(delegateName))) {\n    delegate = proto[delegateName] = proto[name];\n    // check whether proto[name] is writable\n    // some property is readonly in safari, such as HtmlCanvasElement.prototype.toBlob\n    const desc = proto && ObjectGetOwnPropertyDescriptor(proto, name);\n    if (isPropertyWritable(desc)) {\n      const patchDelegate = patchFn(delegate, delegateName, name);\n      proto[name] = function () {\n        return patchDelegate(this, arguments);\n      };\n      attachOriginToPatched(proto[name], delegate);\n    }\n  }\n  return delegate;\n}\n// TODO: @JiaLiPassion, support cancel task later if necessary\nfunction patchMacroTask(obj, funcName, metaCreator) {\n  let setNative = null;\n  function scheduleTask(task) {\n    const data = task.data;\n    data.args[data.cbIdx] = function () {\n      task.invoke.apply(this, arguments);\n    };\n    setNative.apply(data.target, data.args);\n    return task;\n  }\n  setNative = patchMethod(obj, funcName, delegate => function (self, args) {\n    const meta = metaCreator(self, args);\n    if (meta.cbIdx >= 0 && typeof args[meta.cbIdx] === 'function') {\n      return scheduleMacroTaskWithCurrentZone(meta.name, args[meta.cbIdx], meta, scheduleTask);\n    } else {\n      // cause an error by calling it directly.\n      return delegate.apply(self, args);\n    }\n  });\n}\nfunction attachOriginToPatched(patched, original) {\n  patched[zoneSymbol('OriginalDelegate')] = original;\n}\nlet isDetectedIEOrEdge = false;\nlet ieOrEdge = false;\nfunction isIE() {\n  try {\n    const ua = internalWindow.navigator.userAgent;\n    if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1) {\n      return true;\n    }\n  } catch (error) {}\n  return false;\n}\nfunction isIEOrEdge() {\n  if (isDetectedIEOrEdge) {\n    return ieOrEdge;\n  }\n  isDetectedIEOrEdge = true;\n  try {\n    const ua = internalWindow.navigator.userAgent;\n    if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1 || ua.indexOf('Edge/') !== -1) {\n      ieOrEdge = true;\n    }\n  } catch (error) {}\n  return ieOrEdge;\n}\nfunction isFunction(value) {\n  return typeof value === 'function';\n}\nfunction isNumber(value) {\n  return typeof value === 'number';\n}\n\n/**\n * @fileoverview\n * @suppress {missingRequire}\n */\n// Note that passive event listeners are now supported by most modern browsers,\n// including Chrome, Firefox, Safari, and Edge. There's a pending change that\n// would remove support for legacy browsers by zone.js. Removing `passiveSupported`\n// from the codebase will reduce the final code size for existing apps that still use zone.js.\nlet passiveSupported = false;\nif (typeof window !== 'undefined') {\n  try {\n    const options = Object.defineProperty({}, 'passive', {\n      get: function () {\n        passiveSupported = true;\n      }\n    });\n    // Note: We pass the `options` object as the event handler too. This is not compatible with the\n    // signature of `addEventListener` or `removeEventListener` but enables us to remove the handler\n    // without an actual handler.\n    window.addEventListener('test', options, options);\n    window.removeEventListener('test', options, options);\n  } catch (err) {\n    passiveSupported = false;\n  }\n}\n// an identifier to tell ZoneTask do not create a new invoke closure\nconst OPTIMIZED_ZONE_EVENT_TASK_DATA = {\n  useG: true\n};\nconst zoneSymbolEventNames = {};\nconst globalSources = {};\nconst EVENT_NAME_SYMBOL_REGX = new RegExp('^' + ZONE_SYMBOL_PREFIX + '(\\\\w+)(true|false)$');\nconst IMMEDIATE_PROPAGATION_SYMBOL = zoneSymbol('propagationStopped');\nfunction prepareEventNames(eventName, eventNameToString) {\n  const falseEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + FALSE_STR;\n  const trueEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + TRUE_STR;\n  const symbol = ZONE_SYMBOL_PREFIX + falseEventName;\n  const symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;\n  zoneSymbolEventNames[eventName] = {};\n  zoneSymbolEventNames[eventName][FALSE_STR] = symbol;\n  zoneSymbolEventNames[eventName][TRUE_STR] = symbolCapture;\n}\nfunction patchEventTarget(_global, api, apis, patchOptions) {\n  const ADD_EVENT_LISTENER = patchOptions && patchOptions.add || ADD_EVENT_LISTENER_STR;\n  const REMOVE_EVENT_LISTENER = patchOptions && patchOptions.rm || REMOVE_EVENT_LISTENER_STR;\n  const LISTENERS_EVENT_LISTENER = patchOptions && patchOptions.listeners || 'eventListeners';\n  const REMOVE_ALL_LISTENERS_EVENT_LISTENER = patchOptions && patchOptions.rmAll || 'removeAllListeners';\n  const zoneSymbolAddEventListener = zoneSymbol(ADD_EVENT_LISTENER);\n  const ADD_EVENT_LISTENER_SOURCE = '.' + ADD_EVENT_LISTENER + ':';\n  const PREPEND_EVENT_LISTENER = 'prependListener';\n  const PREPEND_EVENT_LISTENER_SOURCE = '.' + PREPEND_EVENT_LISTENER + ':';\n  const invokeTask = function (task, target, event) {\n    // for better performance, check isRemoved which is set\n    // by removeEventListener\n    if (task.isRemoved) {\n      return;\n    }\n    const delegate = task.callback;\n    if (typeof delegate === 'object' && delegate.handleEvent) {\n      // create the bind version of handleEvent when invoke\n      task.callback = event => delegate.handleEvent(event);\n      task.originalDelegate = delegate;\n    }\n    // invoke static task.invoke\n    // need to try/catch error here, otherwise, the error in one event listener\n    // will break the executions of the other event listeners. Also error will\n    // not remove the event listener when `once` options is true.\n    let error;\n    try {\n      task.invoke(task, target, [event]);\n    } catch (err) {\n      error = err;\n    }\n    const options = task.options;\n    if (options && typeof options === 'object' && options.once) {\n      // if options.once is true, after invoke once remove listener here\n      // only browser need to do this, nodejs eventEmitter will cal removeListener\n      // inside EventEmitter.once\n      const delegate = task.originalDelegate ? task.originalDelegate : task.callback;\n      target[REMOVE_EVENT_LISTENER].call(target, event.type, delegate, options);\n    }\n    return error;\n  };\n  function globalCallback(context, event, isCapture) {\n    // https://github.com/angular/zone.js/issues/911, in IE, sometimes\n    // event will be undefined, so we need to use window.event\n    event = event || _global.event;\n    if (!event) {\n      return;\n    }\n    // event.target is needed for Samsung TV and SourceBuffer\n    // || global is needed https://github.com/angular/zone.js/issues/190\n    const target = context || event.target || _global;\n    const tasks = target[zoneSymbolEventNames[event.type][isCapture ? TRUE_STR : FALSE_STR]];\n    if (tasks) {\n      const errors = [];\n      // invoke all tasks which attached to current target with given event.type and capture = false\n      // for performance concern, if task.length === 1, just invoke\n      if (tasks.length === 1) {\n        const err = invokeTask(tasks[0], target, event);\n        err && errors.push(err);\n      } else {\n        // https://github.com/angular/zone.js/issues/836\n        // copy the tasks array before invoke, to avoid\n        // the callback will remove itself or other listener\n        const copyTasks = tasks.slice();\n        for (let i = 0; i < copyTasks.length; i++) {\n          if (event && event[IMMEDIATE_PROPAGATION_SYMBOL] === true) {\n            break;\n          }\n          const err = invokeTask(copyTasks[i], target, event);\n          err && errors.push(err);\n        }\n      }\n      // Since there is only one error, we don't need to schedule microTask\n      // to throw the error.\n      if (errors.length === 1) {\n        throw errors[0];\n      } else {\n        for (let i = 0; i < errors.length; i++) {\n          const err = errors[i];\n          api.nativeScheduleMicroTask(() => {\n            throw err;\n          });\n        }\n      }\n    }\n  }\n  // global shared zoneAwareCallback to handle all event callback with capture = false\n  const globalZoneAwareCallback = function (event) {\n    return globalCallback(this, event, false);\n  };\n  // global shared zoneAwareCallback to handle all event callback with capture = true\n  const globalZoneAwareCaptureCallback = function (event) {\n    return globalCallback(this, event, true);\n  };\n  function patchEventTargetMethods(obj, patchOptions) {\n    if (!obj) {\n      return false;\n    }\n    let useGlobalCallback = true;\n    if (patchOptions && patchOptions.useG !== undefined) {\n      useGlobalCallback = patchOptions.useG;\n    }\n    const validateHandler = patchOptions && patchOptions.vh;\n    let checkDuplicate = true;\n    if (patchOptions && patchOptions.chkDup !== undefined) {\n      checkDuplicate = patchOptions.chkDup;\n    }\n    let returnTarget = false;\n    if (patchOptions && patchOptions.rt !== undefined) {\n      returnTarget = patchOptions.rt;\n    }\n    let proto = obj;\n    while (proto && !proto.hasOwnProperty(ADD_EVENT_LISTENER)) {\n      proto = ObjectGetPrototypeOf(proto);\n    }\n    if (!proto && obj[ADD_EVENT_LISTENER]) {\n      // somehow we did not find it, but we can see it. This happens on IE for Window properties.\n      proto = obj;\n    }\n    if (!proto) {\n      return false;\n    }\n    if (proto[zoneSymbolAddEventListener]) {\n      return false;\n    }\n    const eventNameToString = patchOptions && patchOptions.eventNameToString;\n    // We use a shared global `taskData` to pass data for `scheduleEventTask`,\n    // eliminating the need to create a new object solely for passing data.\n    // WARNING: This object has a static lifetime, meaning it is not created\n    // each time `addEventListener` is called. It is instantiated only once\n    // and captured by reference inside the `addEventListener` and\n    // `removeEventListener` functions. Do not add any new properties to this\n    // object, as doing so would necessitate maintaining the information\n    // between `addEventListener` calls.\n    const taskData = {};\n    const nativeAddEventListener = proto[zoneSymbolAddEventListener] = proto[ADD_EVENT_LISTENER];\n    const nativeRemoveEventListener = proto[zoneSymbol(REMOVE_EVENT_LISTENER)] = proto[REMOVE_EVENT_LISTENER];\n    const nativeListeners = proto[zoneSymbol(LISTENERS_EVENT_LISTENER)] = proto[LISTENERS_EVENT_LISTENER];\n    const nativeRemoveAllListeners = proto[zoneSymbol(REMOVE_ALL_LISTENERS_EVENT_LISTENER)] = proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER];\n    let nativePrependEventListener;\n    if (patchOptions && patchOptions.prepend) {\n      nativePrependEventListener = proto[zoneSymbol(patchOptions.prepend)] = proto[patchOptions.prepend];\n    }\n    /**\n     * This util function will build an option object with passive option\n     * to handle all possible input from the user.\n     */\n    function buildEventListenerOptions(options, passive) {\n      if (!passiveSupported && typeof options === 'object' && options) {\n        // doesn't support passive but user want to pass an object as options.\n        // this will not work on some old browser, so we just pass a boolean\n        // as useCapture parameter\n        return !!options.capture;\n      }\n      if (!passiveSupported || !passive) {\n        return options;\n      }\n      if (typeof options === 'boolean') {\n        return {\n          capture: options,\n          passive: true\n        };\n      }\n      if (!options) {\n        return {\n          passive: true\n        };\n      }\n      if (typeof options === 'object' && options.passive !== false) {\n        return {\n          ...options,\n          passive: true\n        };\n      }\n      return options;\n    }\n    const customScheduleGlobal = function (task) {\n      // if there is already a task for the eventName + capture,\n      // just return, because we use the shared globalZoneAwareCallback here.\n      if (taskData.isExisting) {\n        return;\n      }\n      return nativeAddEventListener.call(taskData.target, taskData.eventName, taskData.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, taskData.options);\n    };\n    /**\n     * In the context of events and listeners, this function will be\n     * called at the end by `cancelTask`, which, in turn, calls `task.cancelFn`.\n     * Cancelling a task is primarily used to remove event listeners from\n     * the task target.\n     */\n    const customCancelGlobal = function (task) {\n      // if task is not marked as isRemoved, this call is directly\n      // from Zone.prototype.cancelTask, we should remove the task\n      // from tasksList of target first\n      if (!task.isRemoved) {\n        const symbolEventNames = zoneSymbolEventNames[task.eventName];\n        let symbolEventName;\n        if (symbolEventNames) {\n          symbolEventName = symbolEventNames[task.capture ? TRUE_STR : FALSE_STR];\n        }\n        const existingTasks = symbolEventName && task.target[symbolEventName];\n        if (existingTasks) {\n          for (let i = 0; i < existingTasks.length; i++) {\n            const existingTask = existingTasks[i];\n            if (existingTask === task) {\n              existingTasks.splice(i, 1);\n              // set isRemoved to data for faster invokeTask check\n              task.isRemoved = true;\n              if (task.removeAbortListener) {\n                task.removeAbortListener();\n                task.removeAbortListener = null;\n              }\n              if (existingTasks.length === 0) {\n                // all tasks for the eventName + capture have gone,\n                // remove globalZoneAwareCallback and remove the task cache from target\n                task.allRemoved = true;\n                task.target[symbolEventName] = null;\n              }\n              break;\n            }\n          }\n        }\n      }\n      // if all tasks for the eventName + capture have gone,\n      // we will really remove the global event callback,\n      // if not, return\n      if (!task.allRemoved) {\n        return;\n      }\n      return nativeRemoveEventListener.call(task.target, task.eventName, task.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, task.options);\n    };\n    const customScheduleNonGlobal = function (task) {\n      return nativeAddEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);\n    };\n    const customSchedulePrepend = function (task) {\n      return nativePrependEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);\n    };\n    const customCancelNonGlobal = function (task) {\n      return nativeRemoveEventListener.call(task.target, task.eventName, task.invoke, task.options);\n    };\n    const customSchedule = useGlobalCallback ? customScheduleGlobal : customScheduleNonGlobal;\n    const customCancel = useGlobalCallback ? customCancelGlobal : customCancelNonGlobal;\n    const compareTaskCallbackVsDelegate = function (task, delegate) {\n      const typeOfDelegate = typeof delegate;\n      return typeOfDelegate === 'function' && task.callback === delegate || typeOfDelegate === 'object' && task.originalDelegate === delegate;\n    };\n    const compare = patchOptions && patchOptions.diff ? patchOptions.diff : compareTaskCallbackVsDelegate;\n    const unpatchedEvents = Zone[zoneSymbol('UNPATCHED_EVENTS')];\n    const passiveEvents = _global[zoneSymbol('PASSIVE_EVENTS')];\n    function copyEventListenerOptions(options) {\n      if (typeof options === 'object' && options !== null) {\n        // We need to destructure the target `options` object since it may\n        // be frozen or sealed (possibly provided implicitly by a third-party\n        // library), or its properties may be readonly.\n        const newOptions = {\n          ...options\n        };\n        // The `signal` option was recently introduced, which caused regressions in\n        // third-party scenarios where `AbortController` was directly provided to\n        // `addEventListener` as options. For instance, in cases like\n        // `document.addEventListener('keydown', callback, abortControllerInstance)`,\n        // which is valid because `AbortController` includes a `signal` getter, spreading\n        // `{...options}` wouldn't copy the `signal`. Additionally, using `Object.create`\n        // isn't feasible since `AbortController` is a built-in object type, and attempting\n        // to create a new object directly with it as the prototype might result in\n        // unexpected behavior.\n        if (options.signal) {\n          newOptions.signal = options.signal;\n        }\n        return newOptions;\n      }\n      return options;\n    }\n    const makeAddListener = function (nativeListener, addSource, customScheduleFn, customCancelFn, returnTarget = false, prepend = false) {\n      return function () {\n        const target = this || _global;\n        let eventName = arguments[0];\n        if (patchOptions && patchOptions.transferEventName) {\n          eventName = patchOptions.transferEventName(eventName);\n        }\n        let delegate = arguments[1];\n        if (!delegate) {\n          return nativeListener.apply(this, arguments);\n        }\n        if (isNode && eventName === 'uncaughtException') {\n          // don't patch uncaughtException of nodejs to prevent endless loop\n          return nativeListener.apply(this, arguments);\n        }\n        // don't create the bind delegate function for handleEvent\n        // case here to improve addEventListener performance\n        // we will create the bind delegate when invoke\n        let isHandleEvent = false;\n        if (typeof delegate !== 'function') {\n          if (!delegate.handleEvent) {\n            return nativeListener.apply(this, arguments);\n          }\n          isHandleEvent = true;\n        }\n        if (validateHandler && !validateHandler(nativeListener, delegate, target, arguments)) {\n          return;\n        }\n        const passive = passiveSupported && !!passiveEvents && passiveEvents.indexOf(eventName) !== -1;\n        const options = copyEventListenerOptions(buildEventListenerOptions(arguments[2], passive));\n        const signal = options?.signal;\n        if (signal?.aborted) {\n          // the signal is an aborted one, just return without attaching the event listener.\n          return;\n        }\n        if (unpatchedEvents) {\n          // check unpatched list\n          for (let i = 0; i < unpatchedEvents.length; i++) {\n            if (eventName === unpatchedEvents[i]) {\n              if (passive) {\n                return nativeListener.call(target, eventName, delegate, options);\n              } else {\n                return nativeListener.apply(this, arguments);\n              }\n            }\n          }\n        }\n        const capture = !options ? false : typeof options === 'boolean' ? true : options.capture;\n        const once = options && typeof options === 'object' ? options.once : false;\n        const zone = Zone.current;\n        let symbolEventNames = zoneSymbolEventNames[eventName];\n        if (!symbolEventNames) {\n          prepareEventNames(eventName, eventNameToString);\n          symbolEventNames = zoneSymbolEventNames[eventName];\n        }\n        const symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];\n        let existingTasks = target[symbolEventName];\n        let isExisting = false;\n        if (existingTasks) {\n          // already have task registered\n          isExisting = true;\n          if (checkDuplicate) {\n            for (let i = 0; i < existingTasks.length; i++) {\n              if (compare(existingTasks[i], delegate)) {\n                // same callback, same capture, same event name, just return\n                return;\n              }\n            }\n          }\n        } else {\n          existingTasks = target[symbolEventName] = [];\n        }\n        let source;\n        const constructorName = target.constructor['name'];\n        const targetSource = globalSources[constructorName];\n        if (targetSource) {\n          source = targetSource[eventName];\n        }\n        if (!source) {\n          source = constructorName + addSource + (eventNameToString ? eventNameToString(eventName) : eventName);\n        }\n        // In the code below, `options` should no longer be reassigned; instead, it\n        // should only be mutated. This is because we pass that object to the native\n        // `addEventListener`.\n        // It's generally recommended to use the same object reference for options.\n        // This ensures consistency and avoids potential issues.\n        taskData.options = options;\n        if (once) {\n          // When using `addEventListener` with the `once` option, we don't pass\n          // the `once` option directly to the native `addEventListener` method.\n          // Instead, we keep the `once` setting and handle it ourselves.\n          taskData.options.once = false;\n        }\n        taskData.target = target;\n        taskData.capture = capture;\n        taskData.eventName = eventName;\n        taskData.isExisting = isExisting;\n        const data = useGlobalCallback ? OPTIMIZED_ZONE_EVENT_TASK_DATA : undefined;\n        // keep taskData into data to allow onScheduleEventTask to access the task information\n        if (data) {\n          data.taskData = taskData;\n        }\n        if (signal) {\n          // When using `addEventListener` with the `signal` option, we don't pass\n          // the `signal` option directly to the native `addEventListener` method.\n          // Instead, we keep the `signal` setting and handle it ourselves.\n          taskData.options.signal = undefined;\n        }\n        // The `scheduleEventTask` function will ultimately call `customScheduleGlobal`,\n        // which in turn calls the native `addEventListener`. This is why `taskData.options`\n        // is updated before scheduling the task, as `customScheduleGlobal` uses\n        // `taskData.options` to pass it to the native `addEventListener`.\n        const task = zone.scheduleEventTask(source, delegate, data, customScheduleFn, customCancelFn);\n        if (signal) {\n          // after task is scheduled, we need to store the signal back to task.options\n          taskData.options.signal = signal;\n          // Wrapping `task` in a weak reference would not prevent memory leaks. Weak references are\n          // primarily used for preventing strong references cycles. `onAbort` is always reachable\n          // as it's an event listener, so its closure retains a strong reference to the `task`.\n          const onAbort = () => task.zone.cancelTask(task);\n          nativeListener.call(signal, 'abort', onAbort, {\n            once: true\n          });\n          // We need to remove the `abort` listener when the event listener is going to be removed,\n          // as it creates a closure that captures `task`. This closure retains a reference to the\n          // `task` object even after it goes out of scope, preventing `task` from being garbage\n          // collected.\n          task.removeAbortListener = () => signal.removeEventListener('abort', onAbort);\n        }\n        // should clear taskData.target to avoid memory leak\n        // issue, https://github.com/angular/angular/issues/20442\n        taskData.target = null;\n        // need to clear up taskData because it is a global object\n        if (data) {\n          data.taskData = null;\n        }\n        // have to save those information to task in case\n        // application may call task.zone.cancelTask() directly\n        if (once) {\n          taskData.options.once = true;\n        }\n        if (!(!passiveSupported && typeof task.options === 'boolean')) {\n          // if not support passive, and we pass an option object\n          // to addEventListener, we should save the options to task\n          task.options = options;\n        }\n        task.target = target;\n        task.capture = capture;\n        task.eventName = eventName;\n        if (isHandleEvent) {\n          // save original delegate for compare to check duplicate\n          task.originalDelegate = delegate;\n        }\n        if (!prepend) {\n          existingTasks.push(task);\n        } else {\n          existingTasks.unshift(task);\n        }\n        if (returnTarget) {\n          return target;\n        }\n      };\n    };\n    proto[ADD_EVENT_LISTENER] = makeAddListener(nativeAddEventListener, ADD_EVENT_LISTENER_SOURCE, customSchedule, customCancel, returnTarget);\n    if (nativePrependEventListener) {\n      proto[PREPEND_EVENT_LISTENER] = makeAddListener(nativePrependEventListener, PREPEND_EVENT_LISTENER_SOURCE, customSchedulePrepend, customCancel, returnTarget, true);\n    }\n    proto[REMOVE_EVENT_LISTENER] = function () {\n      const target = this || _global;\n      let eventName = arguments[0];\n      if (patchOptions && patchOptions.transferEventName) {\n        eventName = patchOptions.transferEventName(eventName);\n      }\n      const options = arguments[2];\n      const capture = !options ? false : typeof options === 'boolean' ? true : options.capture;\n      const delegate = arguments[1];\n      if (!delegate) {\n        return nativeRemoveEventListener.apply(this, arguments);\n      }\n      if (validateHandler && !validateHandler(nativeRemoveEventListener, delegate, target, arguments)) {\n        return;\n      }\n      const symbolEventNames = zoneSymbolEventNames[eventName];\n      let symbolEventName;\n      if (symbolEventNames) {\n        symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];\n      }\n      const existingTasks = symbolEventName && target[symbolEventName];\n      // `existingTasks` may not exist if the `addEventListener` was called before\n      // it was patched by zone.js. Please refer to the attached issue for\n      // clarification, particularly after the `if` condition, before calling\n      // the native `removeEventListener`.\n      if (existingTasks) {\n        for (let i = 0; i < existingTasks.length; i++) {\n          const existingTask = existingTasks[i];\n          if (compare(existingTask, delegate)) {\n            existingTasks.splice(i, 1);\n            // set isRemoved to data for faster invokeTask check\n            existingTask.isRemoved = true;\n            if (existingTasks.length === 0) {\n              // all tasks for the eventName + capture have gone,\n              // remove globalZoneAwareCallback and remove the task cache from target\n              existingTask.allRemoved = true;\n              target[symbolEventName] = null;\n              // in the target, we have an event listener which is added by on_property\n              // such as target.onclick = function() {}, so we need to clear this internal\n              // property too if all delegates with capture=false were removed\n              // https:// github.com/angular/angular/issues/31643\n              // https://github.com/angular/angular/issues/54581\n              if (!capture && typeof eventName === 'string') {\n                const onPropertySymbol = ZONE_SYMBOL_PREFIX + 'ON_PROPERTY' + eventName;\n                target[onPropertySymbol] = null;\n              }\n            }\n            // In all other conditions, when `addEventListener` is called after being\n            // patched by zone.js, we would always find an event task on the `EventTarget`.\n            // This will trigger `cancelFn` on the `existingTask`, leading to `customCancelGlobal`,\n            // which ultimately removes an event listener and cleans up the abort listener\n            // (if an `AbortSignal` was provided when scheduling a task).\n            existingTask.zone.cancelTask(existingTask);\n            if (returnTarget) {\n              return target;\n            }\n            return;\n          }\n        }\n      }\n      // https://github.com/angular/zone.js/issues/930\n      // We may encounter a situation where the `addEventListener` was\n      // called on the event target before zone.js is loaded, resulting\n      // in no task being stored on the event target due to its invocation\n      // of the native implementation. In this scenario, we simply need to\n      // invoke the native `removeEventListener`.\n      return nativeRemoveEventListener.apply(this, arguments);\n    };\n    proto[LISTENERS_EVENT_LISTENER] = function () {\n      const target = this || _global;\n      let eventName = arguments[0];\n      if (patchOptions && patchOptions.transferEventName) {\n        eventName = patchOptions.transferEventName(eventName);\n      }\n      const listeners = [];\n      const tasks = findEventTasks(target, eventNameToString ? eventNameToString(eventName) : eventName);\n      for (let i = 0; i < tasks.length; i++) {\n        const task = tasks[i];\n        let delegate = task.originalDelegate ? task.originalDelegate : task.callback;\n        listeners.push(delegate);\n      }\n      return listeners;\n    };\n    proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER] = function () {\n      const target = this || _global;\n      let eventName = arguments[0];\n      if (!eventName) {\n        const keys = Object.keys(target);\n        for (let i = 0; i < keys.length; i++) {\n          const prop = keys[i];\n          const match = EVENT_NAME_SYMBOL_REGX.exec(prop);\n          let evtName = match && match[1];\n          // in nodejs EventEmitter, removeListener event is\n          // used for monitoring the removeListener call,\n          // so just keep removeListener eventListener until\n          // all other eventListeners are removed\n          if (evtName && evtName !== 'removeListener') {\n            this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, evtName);\n          }\n        }\n        // remove removeListener listener finally\n        this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, 'removeListener');\n      } else {\n        if (patchOptions && patchOptions.transferEventName) {\n          eventName = patchOptions.transferEventName(eventName);\n        }\n        const symbolEventNames = zoneSymbolEventNames[eventName];\n        if (symbolEventNames) {\n          const symbolEventName = symbolEventNames[FALSE_STR];\n          const symbolCaptureEventName = symbolEventNames[TRUE_STR];\n          const tasks = target[symbolEventName];\n          const captureTasks = target[symbolCaptureEventName];\n          if (tasks) {\n            const removeTasks = tasks.slice();\n            for (let i = 0; i < removeTasks.length; i++) {\n              const task = removeTasks[i];\n              let delegate = task.originalDelegate ? task.originalDelegate : task.callback;\n              this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);\n            }\n          }\n          if (captureTasks) {\n            const removeTasks = captureTasks.slice();\n            for (let i = 0; i < removeTasks.length; i++) {\n              const task = removeTasks[i];\n              let delegate = task.originalDelegate ? task.originalDelegate : task.callback;\n              this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);\n            }\n          }\n        }\n      }\n      if (returnTarget) {\n        return this;\n      }\n    };\n    // for native toString patch\n    attachOriginToPatched(proto[ADD_EVENT_LISTENER], nativeAddEventListener);\n    attachOriginToPatched(proto[REMOVE_EVENT_LISTENER], nativeRemoveEventListener);\n    if (nativeRemoveAllListeners) {\n      attachOriginToPatched(proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER], nativeRemoveAllListeners);\n    }\n    if (nativeListeners) {\n      attachOriginToPatched(proto[LISTENERS_EVENT_LISTENER], nativeListeners);\n    }\n    return true;\n  }\n  let results = [];\n  for (let i = 0; i < apis.length; i++) {\n    results[i] = patchEventTargetMethods(apis[i], patchOptions);\n  }\n  return results;\n}\nfunction findEventTasks(target, eventName) {\n  if (!eventName) {\n    const foundTasks = [];\n    for (let prop in target) {\n      const match = EVENT_NAME_SYMBOL_REGX.exec(prop);\n      let evtName = match && match[1];\n      if (evtName && (!eventName || evtName === eventName)) {\n        const tasks = target[prop];\n        if (tasks) {\n          for (let i = 0; i < tasks.length; i++) {\n            foundTasks.push(tasks[i]);\n          }\n        }\n      }\n    }\n    return foundTasks;\n  }\n  let symbolEventName = zoneSymbolEventNames[eventName];\n  if (!symbolEventName) {\n    prepareEventNames(eventName);\n    symbolEventName = zoneSymbolEventNames[eventName];\n  }\n  const captureFalseTasks = target[symbolEventName[FALSE_STR]];\n  const captureTrueTasks = target[symbolEventName[TRUE_STR]];\n  if (!captureFalseTasks) {\n    return captureTrueTasks ? captureTrueTasks.slice() : [];\n  } else {\n    return captureTrueTasks ? captureFalseTasks.concat(captureTrueTasks) : captureFalseTasks.slice();\n  }\n}\nfunction patchEventPrototype(global, api) {\n  const Event = global['Event'];\n  if (Event && Event.prototype) {\n    api.patchMethod(Event.prototype, 'stopImmediatePropagation', delegate => function (self, args) {\n      self[IMMEDIATE_PROPAGATION_SYMBOL] = true;\n      // we need to call the native stopImmediatePropagation\n      // in case in some hybrid application, some part of\n      // application will be controlled by zone, some are not\n      delegate && delegate.apply(self, args);\n    });\n  }\n}\n\n/**\n * @fileoverview\n * @suppress {missingRequire}\n */\nfunction patchQueueMicrotask(global, api) {\n  api.patchMethod(global, 'queueMicrotask', delegate => {\n    return function (self, args) {\n      Zone.current.scheduleMicroTask('queueMicrotask', args[0]);\n    };\n  });\n}\n\n/**\n * @fileoverview\n * @suppress {missingRequire}\n */\nconst taskSymbol = zoneSymbol('zoneTask');\nfunction patchTimer(window, setName, cancelName, nameSuffix) {\n  let setNative = null;\n  let clearNative = null;\n  setName += nameSuffix;\n  cancelName += nameSuffix;\n  const tasksByHandleId = {};\n  function scheduleTask(task) {\n    const data = task.data;\n    data.args[0] = function () {\n      return task.invoke.apply(this, arguments);\n    };\n    const handleOrId = setNative.apply(window, data.args);\n    // Whlist on Node.js when get can the ID by using `[Symbol.toPrimitive]()` we do\n    // to this so that we do not cause potentally leaks when using `setTimeout`\n    // since this can be periodic when using `.refresh`.\n    if (isNumber(handleOrId)) {\n      data.handleId = handleOrId;\n    } else {\n      data.handle = handleOrId;\n      // On Node.js a timeout and interval can be restarted over and over again by using the `.refresh` method.\n      data.isRefreshable = isFunction(handleOrId.refresh);\n    }\n    return task;\n  }\n  function clearTask(task) {\n    const {\n      handle,\n      handleId\n    } = task.data;\n    return clearNative.call(window, handle ?? handleId);\n  }\n  setNative = patchMethod(window, setName, delegate => function (self, args) {\n    if (isFunction(args[0])) {\n      const options = {\n        isRefreshable: false,\n        isPeriodic: nameSuffix === 'Interval',\n        delay: nameSuffix === 'Timeout' || nameSuffix === 'Interval' ? args[1] || 0 : undefined,\n        args: args\n      };\n      const callback = args[0];\n      args[0] = function timer() {\n        try {\n          return callback.apply(this, arguments);\n        } finally {\n          // issue-934, task will be cancelled\n          // even it is a periodic task such as\n          // setInterval\n          // https://github.com/angular/angular/issues/40387\n          // Cleanup tasksByHandleId should be handled before scheduleTask\n          // Since some zoneSpec may intercept and doesn't trigger\n          // scheduleFn(scheduleTask) provided here.\n          const {\n            handle,\n            handleId,\n            isPeriodic,\n            isRefreshable\n          } = options;\n          if (!isPeriodic && !isRefreshable) {\n            if (handleId) {\n              // in non-nodejs env, we remove timerId\n              // from local cache\n              delete tasksByHandleId[handleId];\n            } else if (handle) {\n              // Node returns complex objects as handleIds\n              // we remove task reference from timer object\n              handle[taskSymbol] = null;\n            }\n          }\n        }\n      };\n      const task = scheduleMacroTaskWithCurrentZone(setName, args[0], options, scheduleTask, clearTask);\n      if (!task) {\n        return task;\n      }\n      // Node.js must additionally support the ref and unref functions.\n      const {\n        handleId,\n        handle,\n        isRefreshable,\n        isPeriodic\n      } = task.data;\n      if (handleId) {\n        // for non nodejs env, we save handleId: task\n        // mapping in local cache for clearTimeout\n        tasksByHandleId[handleId] = task;\n      } else if (handle) {\n        // for nodejs env, we save task\n        // reference in timerId Object for clearTimeout\n        handle[taskSymbol] = task;\n        if (isRefreshable && !isPeriodic) {\n          const originalRefresh = handle.refresh;\n          handle.refresh = function () {\n            const {\n              zone,\n              state\n            } = task;\n            if (state === 'notScheduled') {\n              task._state = 'scheduled';\n              zone._updateTaskCount(task, 1);\n            } else if (state === 'running') {\n              task._state = 'scheduling';\n            }\n            return originalRefresh.call(this);\n          };\n        }\n      }\n      return handle ?? handleId ?? task;\n    } else {\n      // cause an error by calling it directly.\n      return delegate.apply(window, args);\n    }\n  });\n  clearNative = patchMethod(window, cancelName, delegate => function (self, args) {\n    const id = args[0];\n    let task;\n    if (isNumber(id)) {\n      // non nodejs env.\n      task = tasksByHandleId[id];\n      delete tasksByHandleId[id];\n    } else {\n      // nodejs env ?? other environments.\n      task = id?.[taskSymbol];\n      if (task) {\n        id[taskSymbol] = null;\n      } else {\n        task = id;\n      }\n    }\n    if (task?.type) {\n      if (task.cancelFn) {\n        // Do not cancel already canceled functions\n        task.zone.cancelTask(task);\n      }\n    } else {\n      // cause an error by calling it directly.\n      delegate.apply(window, args);\n    }\n  });\n}\nfunction patchCustomElements(_global, api) {\n  const {\n    isBrowser,\n    isMix\n  } = api.getGlobalObjects();\n  if (!isBrowser && !isMix || !_global['customElements'] || !('customElements' in _global)) {\n    return;\n  }\n  // https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-lifecycle-callbacks\n  const callbacks = ['connectedCallback', 'disconnectedCallback', 'adoptedCallback', 'attributeChangedCallback', 'formAssociatedCallback', 'formDisabledCallback', 'formResetCallback', 'formStateRestoreCallback'];\n  api.patchCallbacks(api, _global.customElements, 'customElements', 'define', callbacks);\n}\nfunction eventTargetPatch(_global, api) {\n  if (Zone[api.symbol('patchEventTarget')]) {\n    // EventTarget is already patched.\n    return;\n  }\n  const {\n    eventNames,\n    zoneSymbolEventNames,\n    TRUE_STR,\n    FALSE_STR,\n    ZONE_SYMBOL_PREFIX\n  } = api.getGlobalObjects();\n  //  predefine all __zone_symbol__ + eventName + true/false string\n  for (let i = 0; i < eventNames.length; i++) {\n    const eventName = eventNames[i];\n    const falseEventName = eventName + FALSE_STR;\n    const trueEventName = eventName + TRUE_STR;\n    const symbol = ZONE_SYMBOL_PREFIX + falseEventName;\n    const symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;\n    zoneSymbolEventNames[eventName] = {};\n    zoneSymbolEventNames[eventName][FALSE_STR] = symbol;\n    zoneSymbolEventNames[eventName][TRUE_STR] = symbolCapture;\n  }\n  const EVENT_TARGET = _global['EventTarget'];\n  if (!EVENT_TARGET || !EVENT_TARGET.prototype) {\n    return;\n  }\n  api.patchEventTarget(_global, api, [EVENT_TARGET && EVENT_TARGET.prototype]);\n  return true;\n}\nfunction patchEvent(global, api) {\n  api.patchEventPrototype(global, api);\n}\n\n/**\n * @fileoverview\n * @suppress {globalThis}\n */\nfunction filterProperties(target, onProperties, ignoreProperties) {\n  if (!ignoreProperties || ignoreProperties.length === 0) {\n    return onProperties;\n  }\n  const tip = ignoreProperties.filter(ip => ip.target === target);\n  if (!tip || tip.length === 0) {\n    return onProperties;\n  }\n  const targetIgnoreProperties = tip[0].ignoreProperties;\n  return onProperties.filter(op => targetIgnoreProperties.indexOf(op) === -1);\n}\nfunction patchFilteredProperties(target, onProperties, ignoreProperties, prototype) {\n  // check whether target is available, sometimes target will be undefined\n  // because different browser or some 3rd party plugin.\n  if (!target) {\n    return;\n  }\n  const filteredProperties = filterProperties(target, onProperties, ignoreProperties);\n  patchOnProperties(target, filteredProperties, prototype);\n}\n/**\n * Get all event name properties which the event name startsWith `on`\n * from the target object itself, inherited properties are not considered.\n */\nfunction getOnEventNames(target) {\n  return Object.getOwnPropertyNames(target).filter(name => name.startsWith('on') && name.length > 2).map(name => name.substring(2));\n}\nfunction propertyDescriptorPatch(api, _global) {\n  if (isNode && !isMix) {\n    return;\n  }\n  if (Zone[api.symbol('patchEvents')]) {\n    // events are already been patched by legacy patch.\n    return;\n  }\n  const ignoreProperties = _global['__Zone_ignore_on_properties'];\n  // for browsers that we can patch the descriptor:  Chrome & Firefox\n  let patchTargets = [];\n  if (isBrowser) {\n    const internalWindow = window;\n    patchTargets = patchTargets.concat(['Document', 'SVGElement', 'Element', 'HTMLElement', 'HTMLBodyElement', 'HTMLMediaElement', 'HTMLFrameSetElement', 'HTMLFrameElement', 'HTMLIFrameElement', 'HTMLMarqueeElement', 'Worker']);\n    const ignoreErrorProperties = isIE() ? [{\n      target: internalWindow,\n      ignoreProperties: ['error']\n    }] : [];\n    // in IE/Edge, onProp not exist in window object, but in WindowPrototype\n    // so we need to pass WindowPrototype to check onProp exist or not\n    patchFilteredProperties(internalWindow, getOnEventNames(internalWindow), ignoreProperties ? ignoreProperties.concat(ignoreErrorProperties) : ignoreProperties, ObjectGetPrototypeOf(internalWindow));\n  }\n  patchTargets = patchTargets.concat(['XMLHttpRequest', 'XMLHttpRequestEventTarget', 'IDBIndex', 'IDBRequest', 'IDBOpenDBRequest', 'IDBDatabase', 'IDBTransaction', 'IDBCursor', 'WebSocket']);\n  for (let i = 0; i < patchTargets.length; i++) {\n    const target = _global[patchTargets[i]];\n    target && target.prototype && patchFilteredProperties(target.prototype, getOnEventNames(target.prototype), ignoreProperties);\n  }\n}\n\n/**\n * @fileoverview\n * @suppress {missingRequire}\n */\nfunction patchBrowser(Zone) {\n  Zone.__load_patch('legacy', global => {\n    const legacyPatch = global[Zone.__symbol__('legacyPatch')];\n    if (legacyPatch) {\n      legacyPatch();\n    }\n  });\n  Zone.__load_patch('timers', global => {\n    const set = 'set';\n    const clear = 'clear';\n    patchTimer(global, set, clear, 'Timeout');\n    patchTimer(global, set, clear, 'Interval');\n    patchTimer(global, set, clear, 'Immediate');\n  });\n  Zone.__load_patch('requestAnimationFrame', global => {\n    patchTimer(global, 'request', 'cancel', 'AnimationFrame');\n    patchTimer(global, 'mozRequest', 'mozCancel', 'AnimationFrame');\n    patchTimer(global, 'webkitRequest', 'webkitCancel', 'AnimationFrame');\n  });\n  Zone.__load_patch('blocking', (global, Zone) => {\n    const blockingMethods = ['alert', 'prompt', 'confirm'];\n    for (let i = 0; i < blockingMethods.length; i++) {\n      const name = blockingMethods[i];\n      patchMethod(global, name, (delegate, symbol, name) => {\n        return function (s, args) {\n          return Zone.current.run(delegate, global, args, name);\n        };\n      });\n    }\n  });\n  Zone.__load_patch('EventTarget', (global, Zone, api) => {\n    patchEvent(global, api);\n    eventTargetPatch(global, api);\n    // patch XMLHttpRequestEventTarget's addEventListener/removeEventListener\n    const XMLHttpRequestEventTarget = global['XMLHttpRequestEventTarget'];\n    if (XMLHttpRequestEventTarget && XMLHttpRequestEventTarget.prototype) {\n      api.patchEventTarget(global, api, [XMLHttpRequestEventTarget.prototype]);\n    }\n  });\n  Zone.__load_patch('MutationObserver', (global, Zone, api) => {\n    patchClass('MutationObserver');\n    patchClass('WebKitMutationObserver');\n  });\n  Zone.__load_patch('IntersectionObserver', (global, Zone, api) => {\n    patchClass('IntersectionObserver');\n  });\n  Zone.__load_patch('FileReader', (global, Zone, api) => {\n    patchClass('FileReader');\n  });\n  Zone.__load_patch('on_property', (global, Zone, api) => {\n    propertyDescriptorPatch(api, global);\n  });\n  Zone.__load_patch('customElements', (global, Zone, api) => {\n    patchCustomElements(global, api);\n  });\n  Zone.__load_patch('XHR', (global, Zone) => {\n    // Treat XMLHttpRequest as a macrotask.\n    patchXHR(global);\n    const XHR_TASK = zoneSymbol('xhrTask');\n    const XHR_SYNC = zoneSymbol('xhrSync');\n    const XHR_LISTENER = zoneSymbol('xhrListener');\n    const XHR_SCHEDULED = zoneSymbol('xhrScheduled');\n    const XHR_URL = zoneSymbol('xhrURL');\n    const XHR_ERROR_BEFORE_SCHEDULED = zoneSymbol('xhrErrorBeforeScheduled');\n    function patchXHR(window) {\n      const XMLHttpRequest = window['XMLHttpRequest'];\n      if (!XMLHttpRequest) {\n        // XMLHttpRequest is not available in service worker\n        return;\n      }\n      const XMLHttpRequestPrototype = XMLHttpRequest.prototype;\n      function findPendingTask(target) {\n        return target[XHR_TASK];\n      }\n      let oriAddListener = XMLHttpRequestPrototype[ZONE_SYMBOL_ADD_EVENT_LISTENER];\n      let oriRemoveListener = XMLHttpRequestPrototype[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];\n      if (!oriAddListener) {\n        const XMLHttpRequestEventTarget = window['XMLHttpRequestEventTarget'];\n        if (XMLHttpRequestEventTarget) {\n          const XMLHttpRequestEventTargetPrototype = XMLHttpRequestEventTarget.prototype;\n          oriAddListener = XMLHttpRequestEventTargetPrototype[ZONE_SYMBOL_ADD_EVENT_LISTENER];\n          oriRemoveListener = XMLHttpRequestEventTargetPrototype[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];\n        }\n      }\n      const READY_STATE_CHANGE = 'readystatechange';\n      const SCHEDULED = 'scheduled';\n      function scheduleTask(task) {\n        const data = task.data;\n        const target = data.target;\n        target[XHR_SCHEDULED] = false;\n        target[XHR_ERROR_BEFORE_SCHEDULED] = false;\n        // remove existing event listener\n        const listener = target[XHR_LISTENER];\n        if (!oriAddListener) {\n          oriAddListener = target[ZONE_SYMBOL_ADD_EVENT_LISTENER];\n          oriRemoveListener = target[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];\n        }\n        if (listener) {\n          oriRemoveListener.call(target, READY_STATE_CHANGE, listener);\n        }\n        const newListener = target[XHR_LISTENER] = () => {\n          if (target.readyState === target.DONE) {\n            // sometimes on some browsers XMLHttpRequest will fire onreadystatechange with\n            // readyState=4 multiple times, so we need to check task state here\n            if (!data.aborted && target[XHR_SCHEDULED] && task.state === SCHEDULED) {\n              // check whether the xhr has registered onload listener\n              // if that is the case, the task should invoke after all\n              // onload listeners finish.\n              // Also if the request failed without response (status = 0), the load event handler\n              // will not be triggered, in that case, we should also invoke the placeholder callback\n              // to close the XMLHttpRequest::send macroTask.\n              // https://github.com/angular/angular/issues/38795\n              const loadTasks = target[Zone.__symbol__('loadfalse')];\n              if (target.status !== 0 && loadTasks && loadTasks.length > 0) {\n                const oriInvoke = task.invoke;\n                task.invoke = function () {\n                  // need to load the tasks again, because in other\n                  // load listener, they may remove themselves\n                  const loadTasks = target[Zone.__symbol__('loadfalse')];\n                  for (let i = 0; i < loadTasks.length; i++) {\n                    if (loadTasks[i] === task) {\n                      loadTasks.splice(i, 1);\n                    }\n                  }\n                  if (!data.aborted && task.state === SCHEDULED) {\n                    oriInvoke.call(task);\n                  }\n                };\n                loadTasks.push(task);\n              } else {\n                task.invoke();\n              }\n            } else if (!data.aborted && target[XHR_SCHEDULED] === false) {\n              // error occurs when xhr.send()\n              target[XHR_ERROR_BEFORE_SCHEDULED] = true;\n            }\n          }\n        };\n        oriAddListener.call(target, READY_STATE_CHANGE, newListener);\n        const storedTask = target[XHR_TASK];\n        if (!storedTask) {\n          target[XHR_TASK] = task;\n        }\n        sendNative.apply(target, data.args);\n        target[XHR_SCHEDULED] = true;\n        return task;\n      }\n      function placeholderCallback() {}\n      function clearTask(task) {\n        const data = task.data;\n        // Note - ideally, we would call data.target.removeEventListener here, but it's too late\n        // to prevent it from firing. So instead, we store info for the event listener.\n        data.aborted = true;\n        return abortNative.apply(data.target, data.args);\n      }\n      const openNative = patchMethod(XMLHttpRequestPrototype, 'open', () => function (self, args) {\n        self[XHR_SYNC] = args[2] == false;\n        self[XHR_URL] = args[1];\n        return openNative.apply(self, args);\n      });\n      const XMLHTTPREQUEST_SOURCE = 'XMLHttpRequest.send';\n      const fetchTaskAborting = zoneSymbol('fetchTaskAborting');\n      const fetchTaskScheduling = zoneSymbol('fetchTaskScheduling');\n      const sendNative = patchMethod(XMLHttpRequestPrototype, 'send', () => function (self, args) {\n        if (Zone.current[fetchTaskScheduling] === true) {\n          // a fetch is scheduling, so we are using xhr to polyfill fetch\n          // and because we already schedule macroTask for fetch, we should\n          // not schedule a macroTask for xhr again\n          return sendNative.apply(self, args);\n        }\n        if (self[XHR_SYNC]) {\n          // if the XHR is sync there is no task to schedule, just execute the code.\n          return sendNative.apply(self, args);\n        } else {\n          const options = {\n            target: self,\n            url: self[XHR_URL],\n            isPeriodic: false,\n            args: args,\n            aborted: false\n          };\n          const task = scheduleMacroTaskWithCurrentZone(XMLHTTPREQUEST_SOURCE, placeholderCallback, options, scheduleTask, clearTask);\n          if (self && self[XHR_ERROR_BEFORE_SCHEDULED] === true && !options.aborted && task.state === SCHEDULED) {\n            // xhr request throw error when send\n            // we should invoke task instead of leaving a scheduled\n            // pending macroTask\n            task.invoke();\n          }\n        }\n      });\n      const abortNative = patchMethod(XMLHttpRequestPrototype, 'abort', () => function (self, args) {\n        const task = findPendingTask(self);\n        if (task && typeof task.type == 'string') {\n          // If the XHR has already completed, do nothing.\n          // If the XHR has already been aborted, do nothing.\n          // Fix #569, call abort multiple times before done will cause\n          // macroTask task count be negative number\n          if (task.cancelFn == null || task.data && task.data.aborted) {\n            return;\n          }\n          task.zone.cancelTask(task);\n        } else if (Zone.current[fetchTaskAborting] === true) {\n          // the abort is called from fetch polyfill, we need to call native abort of XHR.\n          return abortNative.apply(self, args);\n        }\n        // Otherwise, we are trying to abort an XHR which has not yet been sent, so there is no\n        // task\n        // to cancel. Do nothing.\n      });\n    }\n  });\n  Zone.__load_patch('geolocation', global => {\n    /// GEO_LOCATION\n    if (global['navigator'] && global['navigator'].geolocation) {\n      patchPrototype(global['navigator'].geolocation, ['getCurrentPosition', 'watchPosition']);\n    }\n  });\n  Zone.__load_patch('PromiseRejectionEvent', (global, Zone) => {\n    // handle unhandled promise rejection\n    function findPromiseRejectionHandler(evtName) {\n      return function (e) {\n        const eventTasks = findEventTasks(global, evtName);\n        eventTasks.forEach(eventTask => {\n          // windows has added unhandledrejection event listener\n          // trigger the event listener\n          const PromiseRejectionEvent = global['PromiseRejectionEvent'];\n          if (PromiseRejectionEvent) {\n            const evt = new PromiseRejectionEvent(evtName, {\n              promise: e.promise,\n              reason: e.rejection\n            });\n            eventTask.invoke(evt);\n          }\n        });\n      };\n    }\n    if (global['PromiseRejectionEvent']) {\n      Zone[zoneSymbol('unhandledPromiseRejectionHandler')] = findPromiseRejectionHandler('unhandledrejection');\n      Zone[zoneSymbol('rejectionHandledHandler')] = findPromiseRejectionHandler('rejectionhandled');\n    }\n  });\n  Zone.__load_patch('queueMicrotask', (global, Zone, api) => {\n    patchQueueMicrotask(global, api);\n  });\n}\nfunction patchPromise(Zone) {\n  Zone.__load_patch('ZoneAwarePromise', (global, Zone, api) => {\n    const ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n    const ObjectDefineProperty = Object.defineProperty;\n    function readableObjectToString(obj) {\n      if (obj && obj.toString === Object.prototype.toString) {\n        const className = obj.constructor && obj.constructor.name;\n        return (className ? className : '') + ': ' + JSON.stringify(obj);\n      }\n      return obj ? obj.toString() : Object.prototype.toString.call(obj);\n    }\n    const __symbol__ = api.symbol;\n    const _uncaughtPromiseErrors = [];\n    const isDisableWrappingUncaughtPromiseRejection = global[__symbol__('DISABLE_WRAPPING_UNCAUGHT_PROMISE_REJECTION')] !== false;\n    const symbolPromise = __symbol__('Promise');\n    const symbolThen = __symbol__('then');\n    const creationTrace = '__creationTrace__';\n    api.onUnhandledError = e => {\n      if (api.showUncaughtError()) {\n        const rejection = e && e.rejection;\n        if (rejection) {\n          console.error('Unhandled Promise rejection:', rejection instanceof Error ? rejection.message : rejection, '; Zone:', e.zone.name, '; Task:', e.task && e.task.source, '; Value:', rejection, rejection instanceof Error ? rejection.stack : undefined);\n        } else {\n          console.error(e);\n        }\n      }\n    };\n    api.microtaskDrainDone = () => {\n      while (_uncaughtPromiseErrors.length) {\n        const uncaughtPromiseError = _uncaughtPromiseErrors.shift();\n        try {\n          uncaughtPromiseError.zone.runGuarded(() => {\n            if (uncaughtPromiseError.throwOriginal) {\n              throw uncaughtPromiseError.rejection;\n            }\n            throw uncaughtPromiseError;\n          });\n        } catch (error) {\n          handleUnhandledRejection(error);\n        }\n      }\n    };\n    const UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL = __symbol__('unhandledPromiseRejectionHandler');\n    function handleUnhandledRejection(e) {\n      api.onUnhandledError(e);\n      try {\n        const handler = Zone[UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL];\n        if (typeof handler === 'function') {\n          handler.call(this, e);\n        }\n      } catch (err) {}\n    }\n    function isThenable(value) {\n      return value && value.then;\n    }\n    function forwardResolution(value) {\n      return value;\n    }\n    function forwardRejection(rejection) {\n      return ZoneAwarePromise.reject(rejection);\n    }\n    const symbolState = __symbol__('state');\n    const symbolValue = __symbol__('value');\n    const symbolFinally = __symbol__('finally');\n    const symbolParentPromiseValue = __symbol__('parentPromiseValue');\n    const symbolParentPromiseState = __symbol__('parentPromiseState');\n    const source = 'Promise.then';\n    const UNRESOLVED = null;\n    const RESOLVED = true;\n    const REJECTED = false;\n    const REJECTED_NO_CATCH = 0;\n    function makeResolver(promise, state) {\n      return v => {\n        try {\n          resolvePromise(promise, state, v);\n        } catch (err) {\n          resolvePromise(promise, false, err);\n        }\n        // Do not return value or you will break the Promise spec.\n      };\n    }\n    const once = function () {\n      let wasCalled = false;\n      return function wrapper(wrappedFunction) {\n        return function () {\n          if (wasCalled) {\n            return;\n          }\n          wasCalled = true;\n          wrappedFunction.apply(null, arguments);\n        };\n      };\n    };\n    const TYPE_ERROR = 'Promise resolved with itself';\n    const CURRENT_TASK_TRACE_SYMBOL = __symbol__('currentTaskTrace');\n    // Promise Resolution\n    function resolvePromise(promise, state, value) {\n      const onceWrapper = once();\n      if (promise === value) {\n        throw new TypeError(TYPE_ERROR);\n      }\n      if (promise[symbolState] === UNRESOLVED) {\n        // should only get value.then once based on promise spec.\n        let then = null;\n        try {\n          if (typeof value === 'object' || typeof value === 'function') {\n            then = value && value.then;\n          }\n        } catch (err) {\n          onceWrapper(() => {\n            resolvePromise(promise, false, err);\n          })();\n          return promise;\n        }\n        // if (value instanceof ZoneAwarePromise) {\n        if (state !== REJECTED && value instanceof ZoneAwarePromise && value.hasOwnProperty(symbolState) && value.hasOwnProperty(symbolValue) && value[symbolState] !== UNRESOLVED) {\n          clearRejectedNoCatch(value);\n          resolvePromise(promise, value[symbolState], value[symbolValue]);\n        } else if (state !== REJECTED && typeof then === 'function') {\n          try {\n            then.call(value, onceWrapper(makeResolver(promise, state)), onceWrapper(makeResolver(promise, false)));\n          } catch (err) {\n            onceWrapper(() => {\n              resolvePromise(promise, false, err);\n            })();\n          }\n        } else {\n          promise[symbolState] = state;\n          const queue = promise[symbolValue];\n          promise[symbolValue] = value;\n          if (promise[symbolFinally] === symbolFinally) {\n            // the promise is generated by Promise.prototype.finally\n            if (state === RESOLVED) {\n              // the state is resolved, should ignore the value\n              // and use parent promise value\n              promise[symbolState] = promise[symbolParentPromiseState];\n              promise[symbolValue] = promise[symbolParentPromiseValue];\n            }\n          }\n          // record task information in value when error occurs, so we can\n          // do some additional work such as render longStackTrace\n          if (state === REJECTED && value instanceof Error) {\n            // check if longStackTraceZone is here\n            const trace = Zone.currentTask && Zone.currentTask.data && Zone.currentTask.data[creationTrace];\n            if (trace) {\n              // only keep the long stack trace into error when in longStackTraceZone\n              ObjectDefineProperty(value, CURRENT_TASK_TRACE_SYMBOL, {\n                configurable: true,\n                enumerable: false,\n                writable: true,\n                value: trace\n              });\n            }\n          }\n          for (let i = 0; i < queue.length;) {\n            scheduleResolveOrReject(promise, queue[i++], queue[i++], queue[i++], queue[i++]);\n          }\n          if (queue.length == 0 && state == REJECTED) {\n            promise[symbolState] = REJECTED_NO_CATCH;\n            let uncaughtPromiseError = value;\n            try {\n              // Here we throws a new Error to print more readable error log\n              // and if the value is not an error, zone.js builds an `Error`\n              // Object here to attach the stack information.\n              throw new Error('Uncaught (in promise): ' + readableObjectToString(value) + (value && value.stack ? '\\n' + value.stack : ''));\n            } catch (err) {\n              uncaughtPromiseError = err;\n            }\n            if (isDisableWrappingUncaughtPromiseRejection) {\n              // If disable wrapping uncaught promise reject\n              // use the value instead of wrapping it.\n              uncaughtPromiseError.throwOriginal = true;\n            }\n            uncaughtPromiseError.rejection = value;\n            uncaughtPromiseError.promise = promise;\n            uncaughtPromiseError.zone = Zone.current;\n            uncaughtPromiseError.task = Zone.currentTask;\n            _uncaughtPromiseErrors.push(uncaughtPromiseError);\n            api.scheduleMicroTask(); // to make sure that it is running\n          }\n        }\n      }\n      // Resolving an already resolved promise is a noop.\n      return promise;\n    }\n    const REJECTION_HANDLED_HANDLER = __symbol__('rejectionHandledHandler');\n    function clearRejectedNoCatch(promise) {\n      if (promise[symbolState] === REJECTED_NO_CATCH) {\n        // if the promise is rejected no catch status\n        // and queue.length > 0, means there is a error handler\n        // here to handle the rejected promise, we should trigger\n        // windows.rejectionhandled eventHandler or nodejs rejectionHandled\n        // eventHandler\n        try {\n          const handler = Zone[REJECTION_HANDLED_HANDLER];\n          if (handler && typeof handler === 'function') {\n            handler.call(this, {\n              rejection: promise[symbolValue],\n              promise: promise\n            });\n          }\n        } catch (err) {}\n        promise[symbolState] = REJECTED;\n        for (let i = 0; i < _uncaughtPromiseErrors.length; i++) {\n          if (promise === _uncaughtPromiseErrors[i].promise) {\n            _uncaughtPromiseErrors.splice(i, 1);\n          }\n        }\n      }\n    }\n    function scheduleResolveOrReject(promise, zone, chainPromise, onFulfilled, onRejected) {\n      clearRejectedNoCatch(promise);\n      const promiseState = promise[symbolState];\n      const delegate = promiseState ? typeof onFulfilled === 'function' ? onFulfilled : forwardResolution : typeof onRejected === 'function' ? onRejected : forwardRejection;\n      zone.scheduleMicroTask(source, () => {\n        try {\n          const parentPromiseValue = promise[symbolValue];\n          const isFinallyPromise = !!chainPromise && symbolFinally === chainPromise[symbolFinally];\n          if (isFinallyPromise) {\n            // if the promise is generated from finally call, keep parent promise's state and value\n            chainPromise[symbolParentPromiseValue] = parentPromiseValue;\n            chainPromise[symbolParentPromiseState] = promiseState;\n          }\n          // should not pass value to finally callback\n          const value = zone.run(delegate, undefined, isFinallyPromise && delegate !== forwardRejection && delegate !== forwardResolution ? [] : [parentPromiseValue]);\n          resolvePromise(chainPromise, true, value);\n        } catch (error) {\n          // if error occurs, should always return this error\n          resolvePromise(chainPromise, false, error);\n        }\n      }, chainPromise);\n    }\n    const ZONE_AWARE_PROMISE_TO_STRING = 'function ZoneAwarePromise() { [native code] }';\n    const noop = function () {};\n    const AggregateError = global.AggregateError;\n    class ZoneAwarePromise {\n      static toString() {\n        return ZONE_AWARE_PROMISE_TO_STRING;\n      }\n      static resolve(value) {\n        if (value instanceof ZoneAwarePromise) {\n          return value;\n        }\n        return resolvePromise(new this(null), RESOLVED, value);\n      }\n      static reject(error) {\n        return resolvePromise(new this(null), REJECTED, error);\n      }\n      static withResolvers() {\n        const result = {};\n        result.promise = new ZoneAwarePromise((res, rej) => {\n          result.resolve = res;\n          result.reject = rej;\n        });\n        return result;\n      }\n      static any(values) {\n        if (!values || typeof values[Symbol.iterator] !== 'function') {\n          return Promise.reject(new AggregateError([], 'All promises were rejected'));\n        }\n        const promises = [];\n        let count = 0;\n        try {\n          for (let v of values) {\n            count++;\n            promises.push(ZoneAwarePromise.resolve(v));\n          }\n        } catch (err) {\n          return Promise.reject(new AggregateError([], 'All promises were rejected'));\n        }\n        if (count === 0) {\n          return Promise.reject(new AggregateError([], 'All promises were rejected'));\n        }\n        let finished = false;\n        const errors = [];\n        return new ZoneAwarePromise((resolve, reject) => {\n          for (let i = 0; i < promises.length; i++) {\n            promises[i].then(v => {\n              if (finished) {\n                return;\n              }\n              finished = true;\n              resolve(v);\n            }, err => {\n              errors.push(err);\n              count--;\n              if (count === 0) {\n                finished = true;\n                reject(new AggregateError(errors, 'All promises were rejected'));\n              }\n            });\n          }\n        });\n      }\n      static race(values) {\n        let resolve;\n        let reject;\n        let promise = new this((res, rej) => {\n          resolve = res;\n          reject = rej;\n        });\n        function onResolve(value) {\n          resolve(value);\n        }\n        function onReject(error) {\n          reject(error);\n        }\n        for (let value of values) {\n          if (!isThenable(value)) {\n            value = this.resolve(value);\n          }\n          value.then(onResolve, onReject);\n        }\n        return promise;\n      }\n      static all(values) {\n        return ZoneAwarePromise.allWithCallback(values);\n      }\n      static allSettled(values) {\n        const P = this && this.prototype instanceof ZoneAwarePromise ? this : ZoneAwarePromise;\n        return P.allWithCallback(values, {\n          thenCallback: value => ({\n            status: 'fulfilled',\n            value\n          }),\n          errorCallback: err => ({\n            status: 'rejected',\n            reason: err\n          })\n        });\n      }\n      static allWithCallback(values, callback) {\n        let resolve;\n        let reject;\n        let promise = new this((res, rej) => {\n          resolve = res;\n          reject = rej;\n        });\n        // Start at 2 to prevent prematurely resolving if .then is called immediately.\n        let unresolvedCount = 2;\n        let valueIndex = 0;\n        const resolvedValues = [];\n        for (let value of values) {\n          if (!isThenable(value)) {\n            value = this.resolve(value);\n          }\n          const curValueIndex = valueIndex;\n          try {\n            value.then(value => {\n              resolvedValues[curValueIndex] = callback ? callback.thenCallback(value) : value;\n              unresolvedCount--;\n              if (unresolvedCount === 0) {\n                resolve(resolvedValues);\n              }\n            }, err => {\n              if (!callback) {\n                reject(err);\n              } else {\n                resolvedValues[curValueIndex] = callback.errorCallback(err);\n                unresolvedCount--;\n                if (unresolvedCount === 0) {\n                  resolve(resolvedValues);\n                }\n              }\n            });\n          } catch (thenErr) {\n            reject(thenErr);\n          }\n          unresolvedCount++;\n          valueIndex++;\n        }\n        // Make the unresolvedCount zero-based again.\n        unresolvedCount -= 2;\n        if (unresolvedCount === 0) {\n          resolve(resolvedValues);\n        }\n        return promise;\n      }\n      constructor(executor) {\n        const promise = this;\n        if (!(promise instanceof ZoneAwarePromise)) {\n          throw new Error('Must be an instanceof Promise.');\n        }\n        promise[symbolState] = UNRESOLVED;\n        promise[symbolValue] = []; // queue;\n        try {\n          const onceWrapper = once();\n          executor && executor(onceWrapper(makeResolver(promise, RESOLVED)), onceWrapper(makeResolver(promise, REJECTED)));\n        } catch (error) {\n          resolvePromise(promise, false, error);\n        }\n      }\n      get [Symbol.toStringTag]() {\n        return 'Promise';\n      }\n      get [Symbol.species]() {\n        return ZoneAwarePromise;\n      }\n      then(onFulfilled, onRejected) {\n        // We must read `Symbol.species` safely because `this` may be anything. For instance, `this`\n        // may be an object without a prototype (created through `Object.create(null)`); thus\n        // `this.constructor` will be undefined. One of the use cases is SystemJS creating\n        // prototype-less objects (modules) via `Object.create(null)`. The SystemJS creates an empty\n        // object and copies promise properties into that object (within the `getOrCreateLoad`\n        // function). The zone.js then checks if the resolved value has the `then` method and\n        // invokes it with the `value` context. Otherwise, this will throw an error: `TypeError:\n        // Cannot read properties of undefined (reading 'Symbol(Symbol.species)')`.\n        let C = this.constructor?.[Symbol.species];\n        if (!C || typeof C !== 'function') {\n          C = this.constructor || ZoneAwarePromise;\n        }\n        const chainPromise = new C(noop);\n        const zone = Zone.current;\n        if (this[symbolState] == UNRESOLVED) {\n          this[symbolValue].push(zone, chainPromise, onFulfilled, onRejected);\n        } else {\n          scheduleResolveOrReject(this, zone, chainPromise, onFulfilled, onRejected);\n        }\n        return chainPromise;\n      }\n      catch(onRejected) {\n        return this.then(null, onRejected);\n      }\n      finally(onFinally) {\n        // See comment on the call to `then` about why thee `Symbol.species` is safely accessed.\n        let C = this.constructor?.[Symbol.species];\n        if (!C || typeof C !== 'function') {\n          C = ZoneAwarePromise;\n        }\n        const chainPromise = new C(noop);\n        chainPromise[symbolFinally] = symbolFinally;\n        const zone = Zone.current;\n        if (this[symbolState] == UNRESOLVED) {\n          this[symbolValue].push(zone, chainPromise, onFinally, onFinally);\n        } else {\n          scheduleResolveOrReject(this, zone, chainPromise, onFinally, onFinally);\n        }\n        return chainPromise;\n      }\n    }\n    // Protect against aggressive optimizers dropping seemingly unused properties.\n    // E.g. Closure Compiler in advanced mode.\n    ZoneAwarePromise['resolve'] = ZoneAwarePromise.resolve;\n    ZoneAwarePromise['reject'] = ZoneAwarePromise.reject;\n    ZoneAwarePromise['race'] = ZoneAwarePromise.race;\n    ZoneAwarePromise['all'] = ZoneAwarePromise.all;\n    const NativePromise = global[symbolPromise] = global['Promise'];\n    global['Promise'] = ZoneAwarePromise;\n    const symbolThenPatched = __symbol__('thenPatched');\n    function patchThen(Ctor) {\n      const proto = Ctor.prototype;\n      const prop = ObjectGetOwnPropertyDescriptor(proto, 'then');\n      if (prop && (prop.writable === false || !prop.configurable)) {\n        // check Ctor.prototype.then propertyDescriptor is writable or not\n        // in meteor env, writable is false, we should ignore such case\n        return;\n      }\n      const originalThen = proto.then;\n      // Keep a reference to the original method.\n      proto[symbolThen] = originalThen;\n      Ctor.prototype.then = function (onResolve, onReject) {\n        const wrapped = new ZoneAwarePromise((resolve, reject) => {\n          originalThen.call(this, resolve, reject);\n        });\n        return wrapped.then(onResolve, onReject);\n      };\n      Ctor[symbolThenPatched] = true;\n    }\n    api.patchThen = patchThen;\n    function zoneify(fn) {\n      return function (self, args) {\n        let resultPromise = fn.apply(self, args);\n        if (resultPromise instanceof ZoneAwarePromise) {\n          return resultPromise;\n        }\n        let ctor = resultPromise.constructor;\n        if (!ctor[symbolThenPatched]) {\n          patchThen(ctor);\n        }\n        return resultPromise;\n      };\n    }\n    if (NativePromise) {\n      patchThen(NativePromise);\n      patchMethod(global, 'fetch', delegate => zoneify(delegate));\n    }\n    // This is not part of public API, but it is useful for tests, so we expose it.\n    Promise[Zone.__symbol__('uncaughtPromiseErrors')] = _uncaughtPromiseErrors;\n    return ZoneAwarePromise;\n  });\n}\nfunction patchToString(Zone) {\n  // override Function.prototype.toString to make zone.js patched function\n  // look like native function\n  Zone.__load_patch('toString', global => {\n    // patch Func.prototype.toString to let them look like native\n    const originalFunctionToString = Function.prototype.toString;\n    const ORIGINAL_DELEGATE_SYMBOL = zoneSymbol('OriginalDelegate');\n    const PROMISE_SYMBOL = zoneSymbol('Promise');\n    const ERROR_SYMBOL = zoneSymbol('Error');\n    const newFunctionToString = function toString() {\n      if (typeof this === 'function') {\n        const originalDelegate = this[ORIGINAL_DELEGATE_SYMBOL];\n        if (originalDelegate) {\n          if (typeof originalDelegate === 'function') {\n            return originalFunctionToString.call(originalDelegate);\n          } else {\n            return Object.prototype.toString.call(originalDelegate);\n          }\n        }\n        if (this === Promise) {\n          const nativePromise = global[PROMISE_SYMBOL];\n          if (nativePromise) {\n            return originalFunctionToString.call(nativePromise);\n          }\n        }\n        if (this === Error) {\n          const nativeError = global[ERROR_SYMBOL];\n          if (nativeError) {\n            return originalFunctionToString.call(nativeError);\n          }\n        }\n      }\n      return originalFunctionToString.call(this);\n    };\n    newFunctionToString[ORIGINAL_DELEGATE_SYMBOL] = originalFunctionToString;\n    Function.prototype.toString = newFunctionToString;\n    // patch Object.prototype.toString to let them look like native\n    const originalObjectToString = Object.prototype.toString;\n    const PROMISE_OBJECT_TO_STRING = '[object Promise]';\n    Object.prototype.toString = function () {\n      if (typeof Promise === 'function' && this instanceof Promise) {\n        return PROMISE_OBJECT_TO_STRING;\n      }\n      return originalObjectToString.call(this);\n    };\n  });\n}\nfunction patchCallbacks(api, target, targetName, method, callbacks) {\n  const symbol = Zone.__symbol__(method);\n  if (target[symbol]) {\n    return;\n  }\n  const nativeDelegate = target[symbol] = target[method];\n  target[method] = function (name, opts, options) {\n    if (opts && opts.prototype) {\n      callbacks.forEach(function (callback) {\n        const source = `${targetName}.${method}::` + callback;\n        const prototype = opts.prototype;\n        // Note: the `patchCallbacks` is used for patching the `document.registerElement` and\n        // `customElements.define`. We explicitly wrap the patching code into try-catch since\n        // callbacks may be already patched by other web components frameworks (e.g. LWC), and they\n        // make those properties non-writable. This means that patching callback will throw an error\n        // `cannot assign to read-only property`. See this code as an example:\n        // https://github.com/salesforce/lwc/blob/master/packages/@lwc/engine-core/src/framework/base-bridge-element.ts#L180-L186\n        // We don't want to stop the application rendering if we couldn't patch some\n        // callback, e.g. `attributeChangedCallback`.\n        try {\n          if (prototype.hasOwnProperty(callback)) {\n            const descriptor = api.ObjectGetOwnPropertyDescriptor(prototype, callback);\n            if (descriptor && descriptor.value) {\n              descriptor.value = api.wrapWithCurrentZone(descriptor.value, source);\n              api._redefineProperty(opts.prototype, callback, descriptor);\n            } else if (prototype[callback]) {\n              prototype[callback] = api.wrapWithCurrentZone(prototype[callback], source);\n            }\n          } else if (prototype[callback]) {\n            prototype[callback] = api.wrapWithCurrentZone(prototype[callback], source);\n          }\n        } catch {\n          // Note: we leave the catch block empty since there's no way to handle the error related\n          // to non-writable property.\n        }\n      });\n    }\n    return nativeDelegate.call(target, name, opts, options);\n  };\n  api.attachOriginToPatched(target[method], nativeDelegate);\n}\nfunction patchUtil(Zone) {\n  Zone.__load_patch('util', (global, Zone, api) => {\n    // Collect native event names by looking at properties\n    // on the global namespace, e.g. 'onclick'.\n    const eventNames = getOnEventNames(global);\n    api.patchOnProperties = patchOnProperties;\n    api.patchMethod = patchMethod;\n    api.bindArguments = bindArguments;\n    api.patchMacroTask = patchMacroTask;\n    // In earlier version of zone.js (<0.9.0), we use env name `__zone_symbol__BLACK_LISTED_EVENTS`\n    // to define which events will not be patched by `Zone.js`. In newer version (>=0.9.0), we\n    // change the env name to `__zone_symbol__UNPATCHED_EVENTS` to keep the name consistent with\n    // angular repo. The  `__zone_symbol__BLACK_LISTED_EVENTS` is deprecated, but it is still be\n    // supported for backwards compatibility.\n    const SYMBOL_BLACK_LISTED_EVENTS = Zone.__symbol__('BLACK_LISTED_EVENTS');\n    const SYMBOL_UNPATCHED_EVENTS = Zone.__symbol__('UNPATCHED_EVENTS');\n    if (global[SYMBOL_UNPATCHED_EVENTS]) {\n      global[SYMBOL_BLACK_LISTED_EVENTS] = global[SYMBOL_UNPATCHED_EVENTS];\n    }\n    if (global[SYMBOL_BLACK_LISTED_EVENTS]) {\n      Zone[SYMBOL_BLACK_LISTED_EVENTS] = Zone[SYMBOL_UNPATCHED_EVENTS] = global[SYMBOL_BLACK_LISTED_EVENTS];\n    }\n    api.patchEventPrototype = patchEventPrototype;\n    api.patchEventTarget = patchEventTarget;\n    api.isIEOrEdge = isIEOrEdge;\n    api.ObjectDefineProperty = ObjectDefineProperty;\n    api.ObjectGetOwnPropertyDescriptor = ObjectGetOwnPropertyDescriptor;\n    api.ObjectCreate = ObjectCreate;\n    api.ArraySlice = ArraySlice;\n    api.patchClass = patchClass;\n    api.wrapWithCurrentZone = wrapWithCurrentZone;\n    api.filterProperties = filterProperties;\n    api.attachOriginToPatched = attachOriginToPatched;\n    api._redefineProperty = Object.defineProperty;\n    api.patchCallbacks = patchCallbacks;\n    api.getGlobalObjects = () => ({\n      globalSources,\n      zoneSymbolEventNames,\n      eventNames,\n      isBrowser,\n      isMix,\n      isNode,\n      TRUE_STR,\n      FALSE_STR,\n      ZONE_SYMBOL_PREFIX,\n      ADD_EVENT_LISTENER_STR,\n      REMOVE_EVENT_LISTENER_STR\n    });\n  });\n}\nfunction patchCommon(Zone) {\n  patchPromise(Zone);\n  patchToString(Zone);\n  patchUtil(Zone);\n}\nconst Zone$1 = loadZone();\npatchCommon(Zone$1);\npatchBrowser(Zone$1);","/**\n * This file includes polyfills needed by Angular and is loaded before the app.\n * You can add your own extra polyfills to this file.\n *\n * This file is divided into 2 sections:\n *   1. Browser polyfills. These are applied before loading ZoneJS and are sorted by browsers.\n *   2. Application imports. Files imported after ZoneJS that should be loaded before your main\n *      file.\n *\n * The current setup is for so-called \"evergreen\" browsers; the last versions of browsers that\n * automatically update themselves. This includes Safari >= 10, Chrome >= 55 (including Opera),\n * Edge >= 13 on the desktop, and iOS 10 and Chrome on mobile.\n *\n * Learn more in https://angular.io/guide/browser-support\n */\n\n/***************************************************************************************************\n * BROWSER POLYFILLS\n */\n\nimport 'intersection-observer';\n/**\n * By default, zone.js will patch all possible macroTask and DomEvents\n * user can disable parts of macroTask/DomEvents patch by setting following flags\n * because those flags need to be set before `zone.js` being loaded, and webpack\n * will put import in the top of bundle, so user need to create a separate file\n * in this directory (for example: zone-flags.ts), and put the following flags\n * into that file, and then add the following code before importing zone.js.\n * import './zone-flags';\n *\n * The flags allowed in zone-flags.ts are listed here.\n *\n * The following flags will work for all browsers.\n *\n * (window as any).__Zone_disable_requestAnimationFrame = true; // disable patch requestAnimationFrame\n * (window as any).__Zone_disable_on_property = true; // disable patch onProperty such as onclick\n * (window as any).__zone_symbol__UNPATCHED_EVENTS = ['scroll', 'mousemove']; // disable patch specified eventNames\n *\n *  in IE/Edge developer tools, the addEventListener will also be wrapped by zone.js\n *  with the following flag, it will bypass `zone.js` patch for IE/Edge\n *\n *  (window as any).__Zone_enable_cross_context_check = true;\n *\n */\n/***************************************************************************************************\n * Zone JS is required by default for Angular itself.\n */\nimport 'zone.js'; // Included with Angular CLI.\n\n/***************************************************************************************************\n * APPLICATION IMPORTS\n */\n\n(window as any)['global'] = 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