error-rewrite.js 48.1 KB
"use strict";
/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/**
 * @fileoverview
 * @suppress {globalThis,undefinedVars}
 */
Zone.__load_patch('Error', function (global, Zone, api) {
    /*
     * This code patches Error so that:
     *   - It ignores un-needed stack frames.
     *   - It Shows the associated Zone for reach frame.
     */
    var blacklistedStackFramesSymbol = api.symbol('blacklistedStackFrames');
    var NativeError = global[api.symbol('Error')] = global['Error'];
    // Store the frames which should be removed from the stack frames
    var blackListedStackFrames = {};
    // We must find the frame where Error was created, otherwise we assume we don't understand stack
    var zoneAwareFrame1;
    var zoneAwareFrame2;
    var zoneAwareFrame1WithoutNew;
    var zoneAwareFrame2WithoutNew;
    var zoneAwareFrame3WithoutNew;
    global['Error'] = ZoneAwareError;
    var stackRewrite = 'stackRewrite';
    var blackListedStackFramesPolicy = global['__Zone_Error_BlacklistedStackFrames_policy'] || 'default';
    function buildZoneFrameNames(zoneFrame) {
        var zoneFrameName = { zoneName: zoneFrame.zone.name };
        var result = zoneFrameName;
        while (zoneFrame.parent) {
            zoneFrame = zoneFrame.parent;
            var parentZoneFrameName = { zoneName: zoneFrame.zone.name };
            zoneFrameName.parent = parentZoneFrameName;
            zoneFrameName = parentZoneFrameName;
        }
        return result;
    }
    function buildZoneAwareStackFrames(originalStack, zoneFrame, isZoneFrame) {
        if (isZoneFrame === void 0) { isZoneFrame = true; }
        var frames = originalStack.split('\n');
        var i = 0;
        // Find the first frame
        while (!(frames[i] === zoneAwareFrame1 || frames[i] === zoneAwareFrame2 ||
            frames[i] === zoneAwareFrame1WithoutNew || frames[i] === zoneAwareFrame2WithoutNew ||
            frames[i] === zoneAwareFrame3WithoutNew) &&
            i < frames.length) {
            i++;
        }
        for (; i < frames.length && zoneFrame; i++) {
            var frame = frames[i];
            if (frame.trim()) {
                switch (blackListedStackFrames[frame]) {
                    case 0 /* blackList */:
                        frames.splice(i, 1);
                        i--;
                        break;
                    case 1 /* transition */:
                        if (zoneFrame.parent) {
                            // This is the special frame where zone changed. Print and process it accordingly
                            zoneFrame = zoneFrame.parent;
                        }
                        else {
                            zoneFrame = null;
                        }
                        frames.splice(i, 1);
                        i--;
                        break;
                    default:
                        frames[i] += isZoneFrame ? " [" + zoneFrame.zone.name + "]" :
                            " [" + zoneFrame.zoneName + "]";
                }
            }
        }
        return frames.join('\n');
    }
    /**
     * This is ZoneAwareError which processes the stack frame and cleans up extra frames as well as
     * adds zone information to it.
     */
    function ZoneAwareError() {
        var _this = this;
        // We always have to return native error otherwise the browser console will not work.
        var error = NativeError.apply(this, arguments);
        // Save original stack trace
        var originalStack = error['originalStack'] = error.stack;
        // Process the stack trace and rewrite the frames.
        if (ZoneAwareError[stackRewrite] && originalStack) {
            var zoneFrame = api.currentZoneFrame();
            if (blackListedStackFramesPolicy === 'lazy') {
                // don't handle stack trace now
                error[api.symbol('zoneFrameNames')] = buildZoneFrameNames(zoneFrame);
            }
            else if (blackListedStackFramesPolicy === 'default') {
                try {
                    error.stack = error.zoneAwareStack = buildZoneAwareStackFrames(originalStack, zoneFrame);
                }
                catch (e) {
                    // ignore as some browsers don't allow overriding of stack
                }
            }
        }
        if (this instanceof NativeError && this.constructor != NativeError) {
            // We got called with a `new` operator AND we are subclass of ZoneAwareError
            // in that case we have to copy all of our properties to `this`.
            Object.keys(error).concat('stack', 'message').forEach(function (key) {
                var value = error[key];
                if (value !== undefined) {
                    try {
                        _this[key] = value;
                    }
                    catch (e) {
                        // ignore the assignment in case it is a setter and it throws.
                    }
                }
            });
            return this;
        }
        return error;
    }
    // Copy the prototype so that instanceof operator works as expected
    ZoneAwareError.prototype = NativeError.prototype;
    ZoneAwareError[blacklistedStackFramesSymbol] = blackListedStackFrames;
    ZoneAwareError[stackRewrite] = false;
    var zoneAwareStackSymbol = api.symbol('zoneAwareStack');
    // try to define zoneAwareStack property when blackListed
    // policy is delay
    if (blackListedStackFramesPolicy === 'lazy') {
        Object.defineProperty(ZoneAwareError.prototype, 'zoneAwareStack', {
            configurable: true,
            enumerable: true,
            get: function () {
                if (!this[zoneAwareStackSymbol]) {
                    this[zoneAwareStackSymbol] = buildZoneAwareStackFrames(this.originalStack, this[api.symbol('zoneFrameNames')], false);
                }
                return this[zoneAwareStackSymbol];
            },
            set: function (newStack) {
                this.originalStack = newStack;
                this[zoneAwareStackSymbol] = buildZoneAwareStackFrames(this.originalStack, this[api.symbol('zoneFrameNames')], false);
            }
        });
    }
    // those properties need special handling
    var specialPropertyNames = ['stackTraceLimit', 'captureStackTrace', 'prepareStackTrace'];
    // those properties of NativeError should be set to ZoneAwareError
    var nativeErrorProperties = Object.keys(NativeError);
    if (nativeErrorProperties) {
        nativeErrorProperties.forEach(function (prop) {
            if (specialPropertyNames.filter(function (sp) { return sp === prop; }).length === 0) {
                Object.defineProperty(ZoneAwareError, prop, {
                    get: function () { return NativeError[prop]; },
                    set: function (value) { NativeError[prop] = value; }
                });
            }
        });
    }
    if (NativeError.hasOwnProperty('stackTraceLimit')) {
        // Extend default stack limit as we will be removing few frames.
        NativeError.stackTraceLimit = Math.max(NativeError.stackTraceLimit, 15);
        // make sure that ZoneAwareError has the same property which forwards to NativeError.
        Object.defineProperty(ZoneAwareError, 'stackTraceLimit', {
            get: function () { return NativeError.stackTraceLimit; },
            set: function (value) { return NativeError.stackTraceLimit = value; }
        });
    }
    if (NativeError.hasOwnProperty('captureStackTrace')) {
        Object.defineProperty(ZoneAwareError, 'captureStackTrace', {
            // add named function here because we need to remove this
            // stack frame when prepareStackTrace below
            value: function zoneCaptureStackTrace(targetObject, constructorOpt) {
                NativeError.captureStackTrace(targetObject, constructorOpt);
            }
        });
    }
    var ZONE_CAPTURESTACKTRACE = 'zoneCaptureStackTrace';
    Object.defineProperty(ZoneAwareError, 'prepareStackTrace', {
        get: function () { return NativeError.prepareStackTrace; },
        set: function (value) {
            if (!value || typeof value !== 'function') {
                return NativeError.prepareStackTrace = value;
            }
            return NativeError.prepareStackTrace = function (error, structuredStackTrace) {
                // remove additional stack information from ZoneAwareError.captureStackTrace
                if (structuredStackTrace) {
                    for (var i = 0; i < structuredStackTrace.length; i++) {
                        var st = structuredStackTrace[i];
                        // remove the first function which name is zoneCaptureStackTrace
                        if (st.getFunctionName() === ZONE_CAPTURESTACKTRACE) {
                            structuredStackTrace.splice(i, 1);
                            break;
                        }
                    }
                }
                return value.call(this, error, structuredStackTrace);
            };
        }
    });
    if (blackListedStackFramesPolicy === 'disable') {
        // don't need to run detectZone to populate
        // blacklisted stack frames
        return;
    }
    // Now we need to populate the `blacklistedStackFrames` as well as find the
    // run/runGuarded/runTask frames. This is done by creating a detect zone and then threading
    // the execution through all of the above methods so that we can look at the stack trace and
    // find the frames of interest.
    var detectZone = Zone.current.fork({
        name: 'detect',
        onHandleError: function (parentZD, current, target, error) {
            if (error.originalStack && Error === ZoneAwareError) {
                var frames_1 = error.originalStack.split(/\n/);
                var runFrame = false, runGuardedFrame = false, runTaskFrame = false;
                while (frames_1.length) {
                    var frame = frames_1.shift();
                    // On safari it is possible to have stack frame with no line number.
                    // This check makes sure that we don't filter frames on name only (must have
                    // line number or exact equals to `ZoneAwareError`)
                    if (/:\d+:\d+/.test(frame) || frame === 'ZoneAwareError') {
                        // Get rid of the path so that we don't accidentally find function name in path.
                        // In chrome the separator is `(` and `@` in FF and safari
                        // Chrome: at Zone.run (zone.js:100)
                        // Chrome: at Zone.run (http://localhost:9876/base/build/lib/zone.js:100:24)
                        // FireFox: Zone.prototype.run@http://localhost:9876/base/build/lib/zone.js:101:24
                        // Safari: run@http://localhost:9876/base/build/lib/zone.js:101:24
                        var fnName = frame.split('(')[0].split('@')[0];
                        var frameType = 1 /* transition */;
                        if (fnName.indexOf('ZoneAwareError') !== -1) {
                            if (fnName.indexOf('new ZoneAwareError') !== -1) {
                                zoneAwareFrame1 = frame;
                                zoneAwareFrame2 = frame.replace('new ZoneAwareError', 'new Error.ZoneAwareError');
                            }
                            else {
                                zoneAwareFrame1WithoutNew = frame;
                                zoneAwareFrame2WithoutNew = frame.replace('Error.', '');
                                if (frame.indexOf('Error.ZoneAwareError') === -1) {
                                    zoneAwareFrame3WithoutNew =
                                        frame.replace('ZoneAwareError', 'Error.ZoneAwareError');
                                }
                            }
                            blackListedStackFrames[zoneAwareFrame2] = 0 /* blackList */;
                        }
                        if (fnName.indexOf('runGuarded') !== -1) {
                            runGuardedFrame = true;
                        }
                        else if (fnName.indexOf('runTask') !== -1) {
                            runTaskFrame = true;
                        }
                        else if (fnName.indexOf('run') !== -1) {
                            runFrame = true;
                        }
                        else {
                            frameType = 0 /* blackList */;
                        }
                        blackListedStackFrames[frame] = frameType;
                        // Once we find all of the frames we can stop looking.
                        if (runFrame && runGuardedFrame && runTaskFrame) {
                            ZoneAwareError[stackRewrite] = true;
                            break;
                        }
                    }
                }
            }
            return false;
        }
    });
    // carefully constructor a stack frame which contains all of the frames of interest which
    // need to be detected and blacklisted.
    var childDetectZone = detectZone.fork({
        name: 'child',
        onScheduleTask: function (delegate, curr, target, task) {
            return delegate.scheduleTask(target, task);
        },
        onInvokeTask: function (delegate, curr, target, task, applyThis, applyArgs) {
            return delegate.invokeTask(target, task, applyThis, applyArgs);
        },
        onCancelTask: function (delegate, curr, target, task) {
            return delegate.cancelTask(target, task);
        },
        onInvoke: function (delegate, curr, target, callback, applyThis, applyArgs, source) {
            return delegate.invoke(target, callback, applyThis, applyArgs, source);
        }
    });
    // we need to detect all zone related frames, it will
    // exceed default stackTraceLimit, so we set it to
    // larger number here, and restore it after detect finish.
    // We cast through any so we don't need to depend on nodejs typings.
    var originalStackTraceLimit = Error.stackTraceLimit;
    Error.stackTraceLimit = 100;
    // we schedule event/micro/macro task, and invoke them
    // when onSchedule, so we can get all stack traces for
    // all kinds of tasks with one error thrown.
    childDetectZone.run(function () {
        childDetectZone.runGuarded(function () {
            var fakeTransitionTo = function () { };
            childDetectZone.scheduleEventTask(blacklistedStackFramesSymbol, function () {
                childDetectZone.scheduleMacroTask(blacklistedStackFramesSymbol, function () {
                    childDetectZone.scheduleMicroTask(blacklistedStackFramesSymbol, function () { throw new Error(); }, undefined, function (t) {
                        t._transitionTo = fakeTransitionTo;
                        t.invoke();
                    });
                    childDetectZone.scheduleMicroTask(blacklistedStackFramesSymbol, function () { throw Error(); }, undefined, function (t) {
                        t._transitionTo = fakeTransitionTo;
                        t.invoke();
                    });
                }, undefined, function (t) {
                    t._transitionTo = fakeTransitionTo;
                    t.invoke();
                }, function () { });
            }, undefined, function (t) {
                t._transitionTo = fakeTransitionTo;
                t.invoke();
            }, function () { });
        });
    });
    Error.stackTraceLimit = originalStackTraceLimit;
});
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* @license\n * Copyright Google Inc. All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * @fileoverview\n * @suppress {globalThis,undefinedVars}\n */\n\n/**\n * Extend the Error with additional fields for rewritten stack frames\n */\ninterface Error {\n  /**\n   * Stack trace where extra frames have been removed and zone names added.\n   */\n  zoneAwareStack?: string;\n\n  /**\n   * Original stack trace with no modifications\n   */\n  originalStack?: string;\n}\n\nZone.__load_patch('Error', (global: any, Zone: ZoneType, api: _ZonePrivate) => {\n  /*\n   * This code patches Error so that:\n   *   - It ignores un-needed stack frames.\n   *   - It Shows the associated Zone for reach frame.\n   */\n\n  const enum FrameType {\n    /// Skip this frame when printing out stack\n    blackList,\n    /// This frame marks zone transition\n    transition\n  }\n\n  const blacklistedStackFramesSymbol = api.symbol('blacklistedStackFrames');\n  const NativeError = global[api.symbol('Error')] = global['Error'];\n  // Store the frames which should be removed from the stack frames\n  const blackListedStackFrames: {[frame: string]: FrameType} = {};\n  // We must find the frame where Error was created, otherwise we assume we don't understand stack\n  let zoneAwareFrame1: string;\n  let zoneAwareFrame2: string;\n  let zoneAwareFrame1WithoutNew: string;\n  let zoneAwareFrame2WithoutNew: string;\n  let zoneAwareFrame3WithoutNew: string;\n\n  global['Error'] = ZoneAwareError;\n  const stackRewrite = 'stackRewrite';\n\n  type BlackListedStackFramesPolicy = 'default' | 'disable' | 'lazy';\n  const blackListedStackFramesPolicy: BlackListedStackFramesPolicy =\n      global['__Zone_Error_BlacklistedStackFrames_policy'] || 'default';\n\n  interface ZoneFrameName {\n    zoneName: string;\n    parent?: ZoneFrameName;\n  }\n\n  function buildZoneFrameNames(zoneFrame: _ZoneFrame) {\n    let zoneFrameName: ZoneFrameName = {zoneName: zoneFrame.zone.name};\n    let result = zoneFrameName;\n    while (zoneFrame.parent) {\n      zoneFrame = zoneFrame.parent;\n      const parentZoneFrameName = {zoneName: zoneFrame.zone.name};\n      zoneFrameName.parent = parentZoneFrameName;\n      zoneFrameName = parentZoneFrameName;\n    }\n    return result;\n  }\n\n  function buildZoneAwareStackFrames(\n      originalStack: string, zoneFrame: _ZoneFrame | ZoneFrameName | null, isZoneFrame = true) {\n    let frames: string[] = originalStack.split('\\n');\n    let i = 0;\n    // Find the first frame\n    while (!(frames[i] === zoneAwareFrame1 || frames[i] === zoneAwareFrame2 ||\n             frames[i] === zoneAwareFrame1WithoutNew || frames[i] === zoneAwareFrame2WithoutNew ||\n             frames[i] === zoneAwareFrame3WithoutNew) &&\n           i < frames.length) {\n      i++;\n    }\n    for (; i < frames.length && zoneFrame; i++) {\n      let frame = frames[i];\n      if (frame.trim()) {\n        switch (blackListedStackFrames[frame]) {\n          case FrameType.blackList:\n            frames.splice(i, 1);\n            i--;\n            break;\n          case FrameType.transition:\n            if (zoneFrame.parent) {\n              // This is the special frame where zone changed. Print and process it accordingly\n              zoneFrame = zoneFrame.parent;\n            } else {\n              zoneFrame = null;\n            }\n            frames.splice(i, 1);\n            i--;\n            break;\n          default:\n            frames[i] += isZoneFrame ? ` [${(zoneFrame as _ZoneFrame).zone.name}]` :\n                                       ` [${(zoneFrame as ZoneFrameName).zoneName}]`;\n        }\n      }\n    }\n    return frames.join('\\n');\n  }\n  /**\n   * This is ZoneAwareError which processes the stack frame and cleans up extra frames as well as\n   * adds zone information to it.\n   */\n  function ZoneAwareError(this: unknown | typeof NativeError): Error {\n    // We always have to return native error otherwise the browser console will not work.\n    let error: Error = NativeError.apply(this, arguments);\n    // Save original stack trace\n    const originalStack = (error as any)['originalStack'] = error.stack;\n\n    // Process the stack trace and rewrite the frames.\n    if ((ZoneAwareError as any)[stackRewrite] && originalStack) {\n      let zoneFrame = api.currentZoneFrame();\n      if (blackListedStackFramesPolicy === 'lazy') {\n        // don't handle stack trace now\n        (error as any)[api.symbol('zoneFrameNames')] = buildZoneFrameNames(zoneFrame);\n      } else if (blackListedStackFramesPolicy === 'default') {\n        try {\n          error.stack = error.zoneAwareStack = buildZoneAwareStackFrames(originalStack, zoneFrame);\n        } catch (e) {\n          // ignore as some browsers don't allow overriding of stack\n        }\n      }\n    }\n\n    if (this instanceof NativeError && this.constructor != NativeError) {\n      // We got called with a `new` operator AND we are subclass of ZoneAwareError\n      // in that case we have to copy all of our properties to `this`.\n      Object.keys(error).concat('stack', 'message').forEach((key) => {\n        const value = (error as any)[key];\n        if (value !== undefined) {\n          try {\n            this[key] = value;\n          } catch (e) {\n            // ignore the assignment in case it is a setter and it throws.\n          }\n        }\n      });\n      return this;\n    }\n    return error;\n  }\n\n  // Copy the prototype so that instanceof operator works as expected\n  ZoneAwareError.prototype = NativeError.prototype;\n  (ZoneAwareError as any)[blacklistedStackFramesSymbol] = blackListedStackFrames;\n  (ZoneAwareError as any)[stackRewrite] = false;\n\n  const zoneAwareStackSymbol = api.symbol('zoneAwareStack');\n\n  // try to define zoneAwareStack property when blackListed\n  // policy is delay\n  if (blackListedStackFramesPolicy === 'lazy') {\n    Object.defineProperty(ZoneAwareError.prototype, 'zoneAwareStack', {\n      configurable: true,\n      enumerable: true,\n      get: function() {\n        if (!this[zoneAwareStackSymbol]) {\n          this[zoneAwareStackSymbol] = buildZoneAwareStackFrames(\n              this.originalStack, this[api.symbol('zoneFrameNames')], false);\n        }\n        return this[zoneAwareStackSymbol];\n      },\n      set: function(newStack: string) {\n        this.originalStack = newStack;\n        this[zoneAwareStackSymbol] = buildZoneAwareStackFrames(\n            this.originalStack, this[api.symbol('zoneFrameNames')], false);\n      }\n    });\n  }\n\n  // those properties need special handling\n  const specialPropertyNames = ['stackTraceLimit', 'captureStackTrace', 'prepareStackTrace'];\n  // those properties of NativeError should be set to ZoneAwareError\n  const nativeErrorProperties = Object.keys(NativeError);\n  if (nativeErrorProperties) {\n    nativeErrorProperties.forEach(prop => {\n      if (specialPropertyNames.filter(sp => sp === prop).length === 0) {\n        Object.defineProperty(ZoneAwareError, prop, {\n          get: function() { return NativeError[prop]; },\n          set: function(value) { NativeError[prop] = value; }\n        });\n      }\n    });\n  }\n\n  if (NativeError.hasOwnProperty('stackTraceLimit')) {\n    // Extend default stack limit as we will be removing few frames.\n    NativeError.stackTraceLimit = Math.max(NativeError.stackTraceLimit, 15);\n\n    // make sure that ZoneAwareError has the same property which forwards to NativeError.\n    Object.defineProperty(ZoneAwareError, 'stackTraceLimit', {\n      get: function() { return NativeError.stackTraceLimit; },\n      set: function(value) { return NativeError.stackTraceLimit = value; }\n    });\n  }\n\n  if (NativeError.hasOwnProperty('captureStackTrace')) {\n    Object.defineProperty(ZoneAwareError, 'captureStackTrace', {\n      // add named function here because we need to remove this\n      // stack frame when prepareStackTrace below\n      value: function zoneCaptureStackTrace(targetObject: Object, constructorOpt?: Function) {\n        NativeError.captureStackTrace(targetObject, constructorOpt);\n      }\n    });\n  }\n\n  const ZONE_CAPTURESTACKTRACE = 'zoneCaptureStackTrace';\n  Object.defineProperty(ZoneAwareError, 'prepareStackTrace', {\n    get: function() { return NativeError.prepareStackTrace; },\n    set: function(value) {\n      if (!value || typeof value !== 'function') {\n        return NativeError.prepareStackTrace = value;\n      }\n      return NativeError.prepareStackTrace = function(\n                 error: Error, structuredStackTrace: {getFunctionName: Function}[]) {\n        // remove additional stack information from ZoneAwareError.captureStackTrace\n        if (structuredStackTrace) {\n          for (let i = 0; i < structuredStackTrace.length; i++) {\n            const st = structuredStackTrace[i];\n            // remove the first function which name is zoneCaptureStackTrace\n            if (st.getFunctionName() === ZONE_CAPTURESTACKTRACE) {\n              structuredStackTrace.splice(i, 1);\n              break;\n            }\n          }\n        }\n        return value.call(this, error, structuredStackTrace);\n      };\n    }\n  });\n\n  if (blackListedStackFramesPolicy === 'disable') {\n    // don't need to run detectZone to populate\n    // blacklisted stack frames\n    return;\n  }\n  // Now we need to populate the `blacklistedStackFrames` as well as find the\n  // run/runGuarded/runTask frames. This is done by creating a detect zone and then threading\n  // the execution through all of the above methods so that we can look at the stack trace and\n  // find the frames of interest.\n\n  let detectZone: Zone = Zone.current.fork({\n    name: 'detect',\n    onHandleError: function(\n        parentZD: ZoneDelegate, current: Zone, target: Zone, error: any): boolean {\n      if (error.originalStack && Error === ZoneAwareError) {\n        let frames = error.originalStack.split(/\\n/);\n        let runFrame = false, runGuardedFrame = false, runTaskFrame = false;\n        while (frames.length) {\n          let frame = frames.shift();\n          // On safari it is possible to have stack frame with no line number.\n          // This check makes sure that we don't filter frames on name only (must have\n          // line number or exact equals to `ZoneAwareError`)\n          if (/:\\d+:\\d+/.test(frame) || frame === 'ZoneAwareError') {\n            // Get rid of the path so that we don't accidentally find function name in path.\n            // In chrome the separator is `(` and `@` in FF and safari\n            // Chrome: at Zone.run (zone.js:100)\n            // Chrome: at Zone.run (http://localhost:9876/base/build/lib/zone.js:100:24)\n            // FireFox: Zone.prototype.run@http://localhost:9876/base/build/lib/zone.js:101:24\n            // Safari: run@http://localhost:9876/base/build/lib/zone.js:101:24\n            let fnName: string = frame.split('(')[0].split('@')[0];\n            let frameType = FrameType.transition;\n            if (fnName.indexOf('ZoneAwareError') !== -1) {\n              if (fnName.indexOf('new ZoneAwareError') !== -1) {\n                zoneAwareFrame1 = frame;\n                zoneAwareFrame2 = frame.replace('new ZoneAwareError', 'new Error.ZoneAwareError');\n              } else {\n                zoneAwareFrame1WithoutNew = frame;\n                zoneAwareFrame2WithoutNew = frame.replace('Error.', '');\n                if (frame.indexOf('Error.ZoneAwareError') === -1) {\n                  zoneAwareFrame3WithoutNew =\n                      frame.replace('ZoneAwareError', 'Error.ZoneAwareError');\n                }\n              }\n              blackListedStackFrames[zoneAwareFrame2] = FrameType.blackList;\n            }\n            if (fnName.indexOf('runGuarded') !== -1) {\n              runGuardedFrame = true;\n            } else if (fnName.indexOf('runTask') !== -1) {\n              runTaskFrame = true;\n            } else if (fnName.indexOf('run') !== -1) {\n              runFrame = true;\n            } else {\n              frameType = FrameType.blackList;\n            }\n            blackListedStackFrames[frame] = frameType;\n            // Once we find all of the frames we can stop looking.\n            if (runFrame && runGuardedFrame && runTaskFrame) {\n              (ZoneAwareError as any)[stackRewrite] = true;\n              break;\n            }\n          }\n        }\n      }\n      return false;\n    }\n  }) as Zone;\n  // carefully constructor a stack frame which contains all of the frames of interest which\n  // need to be detected and blacklisted.\n\n  const childDetectZone = detectZone.fork({\n    name: 'child',\n    onScheduleTask: function(delegate, curr, target, task) {\n      return delegate.scheduleTask(target, task);\n    },\n    onInvokeTask: function(delegate, curr, target, task, applyThis, applyArgs) {\n      return delegate.invokeTask(target, task, applyThis, applyArgs);\n    },\n    onCancelTask: function(delegate, curr, target, task) {\n      return delegate.cancelTask(target, task);\n    },\n    onInvoke: function(delegate, curr, target, callback, applyThis, applyArgs, source) {\n      return delegate.invoke(target, callback, applyThis, applyArgs, source);\n    }\n  });\n\n  // we need to detect all zone related frames, it will\n  // exceed default stackTraceLimit, so we set it to\n  // larger number here, and restore it after detect finish.\n  // We cast through any so we don't need to depend on nodejs typings.\n  const originalStackTraceLimit = (Error as any).stackTraceLimit;\n  (Error as any).stackTraceLimit = 100;\n  // we schedule event/micro/macro task, and invoke them\n  // when onSchedule, so we can get all stack traces for\n  // all kinds of tasks with one error thrown.\n  childDetectZone.run(() => {\n    childDetectZone.runGuarded(() => {\n      const fakeTransitionTo = () => {};\n      childDetectZone.scheduleEventTask(\n          blacklistedStackFramesSymbol,\n          () => {\n            childDetectZone.scheduleMacroTask(\n                blacklistedStackFramesSymbol,\n                () => {\n                  childDetectZone.scheduleMicroTask(\n                      blacklistedStackFramesSymbol, () => { throw new Error(); }, undefined,\n                      (t: Task) => {\n                        (t as any)._transitionTo = fakeTransitionTo;\n                        t.invoke();\n                      });\n                  childDetectZone.scheduleMicroTask(\n                      blacklistedStackFramesSymbol, () => { throw Error(); }, undefined,\n                      (t: Task) => {\n                        (t as any)._transitionTo = fakeTransitionTo;\n                        t.invoke();\n                      });\n                },\n                undefined,\n                (t) => {\n                  (t as any)._transitionTo = fakeTransitionTo;\n                  t.invoke();\n                },\n                () => {});\n          },\n          undefined,\n          (t) => {\n            (t as any)._transitionTo = fakeTransitionTo;\n            t.invoke();\n          },\n          () => {});\n    });\n  });\n\n  (Error as any).stackTraceLimit = originalStackTraceLimit;\n});\n"]}