'use strict';
/**
* @license Angular v<unknown>
* (c) 2010-2022 Google LLC. https://angular.io/
* License: MIT
*/
/**
* @fileoverview
* @suppress {globalThis,undefinedVars}
*/
Zone.__load_patch('Error', (global, Zone, api) => {
/*
* This code patches Error so that:
* - It ignores un-needed stack frames.
* - It Shows the associated Zone for reach frame.
*/
const zoneJsInternalStackFramesSymbol = api.symbol('zoneJsInternalStackFrames');
const NativeError = global[api.symbol('Error')] = global['Error'];
// Store the frames which should be removed from the stack frames
const zoneJsInternalStackFrames = {};
// We must find the frame where Error was created, otherwise we assume we don't understand stack
let zoneAwareFrame1;
let zoneAwareFrame2;
let zoneAwareFrame1WithoutNew;
let zoneAwareFrame2WithoutNew;
let zoneAwareFrame3WithoutNew;
global['Error'] = ZoneAwareError;
const stackRewrite = 'stackRewrite';
const zoneJsInternalStackFramesPolicy = global['__Zone_Error_BlacklistedStackFrames_policy'] ||
global['__Zone_Error_ZoneJsInternalStackFrames_policy'] || 'default';
function buildZoneFrameNames(zoneFrame) {
let zoneFrameName = { zoneName: zoneFrame.zone.name };
let result = zoneFrameName;
while (zoneFrame.parent) {
zoneFrame = zoneFrame.parent;
const parentZoneFrameName = { zoneName: zoneFrame.zone.name };
zoneFrameName.parent = parentZoneFrameName;
zoneFrameName = parentZoneFrameName;
}
return result;
}
function buildZoneAwareStackFrames(originalStack, zoneFrame, isZoneFrame = true) {
let frames = originalStack.split('\n');
let 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++) {
let frame = frames[i];
if (frame.trim()) {
switch (zoneJsInternalStackFrames[frame]) {
case 0 /* FrameType.zoneJsInternal */:
frames.splice(i, 1);
i--;
break;
case 1 /* FrameType.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() {
// We always have to return native error otherwise the browser console will not work.
let error = NativeError.apply(this, arguments);
// Save original stack trace
const originalStack = error['originalStack'] = error.stack;
// Process the stack trace and rewrite the frames.
if (ZoneAwareError[stackRewrite] && originalStack) {
let zoneFrame = api.currentZoneFrame();
if (zoneJsInternalStackFramesPolicy === 'lazy') {
// don't handle stack trace now
error[api.symbol('zoneFrameNames')] = buildZoneFrameNames(zoneFrame);
}
else if (zoneJsInternalStackFramesPolicy === '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((key) => {
const 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[zoneJsInternalStackFramesSymbol] = zoneJsInternalStackFrames;
ZoneAwareError[stackRewrite] = false;
const zoneAwareStackSymbol = api.symbol('zoneAwareStack');
// try to define zoneAwareStack property when zoneJsInternal frames policy is delay
if (zoneJsInternalStackFramesPolicy === '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
const specialPropertyNames = ['stackTraceLimit', 'captureStackTrace', 'prepareStackTrace'];
// those properties of NativeError should be set to ZoneAwareError
const nativeErrorProperties = Object.keys(NativeError);
if (nativeErrorProperties) {
nativeErrorProperties.forEach(prop => {
if (specialPropertyNames.filter(sp => 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);
}
});
}
const 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 (let i = 0; i < structuredStackTrace.length; i++) {
const 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 (zoneJsInternalStackFramesPolicy === 'disable') {
// don't need to run detectZone to populate zoneJs internal stack frames
return;
}
// Now we need to populate the `zoneJsInternalStackFrames` 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.
let detectZone = Zone.current.fork({
name: 'detect',
onHandleError: function (parentZD, current, target, error) {
if (error.originalStack && Error === ZoneAwareError) {
let frames = error.originalStack.split(/\n/);
let runFrame = false, runGuardedFrame = false, runTaskFrame = false;
while (frames.length) {
let frame = frames.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
let fnName = frame.split('(')[0].split('@')[0];
let frameType = 1 /* FrameType.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');
}
}
zoneJsInternalStackFrames[zoneAwareFrame2] = 0 /* FrameType.zoneJsInternal */;
}
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 /* FrameType.zoneJsInternal */;
}
zoneJsInternalStackFrames[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 marked as an internal zoneJs frame.
const 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.
const 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(() => {
childDetectZone.runGuarded(() => {
const fakeTransitionTo = () => { };
childDetectZone.scheduleEventTask(zoneJsInternalStackFramesSymbol, () => {
childDetectZone.scheduleMacroTask(zoneJsInternalStackFramesSymbol, () => {
childDetectZone.scheduleMicroTask(zoneJsInternalStackFramesSymbol, () => {
throw new Error();
}, undefined, (t) => {
t._transitionTo = fakeTransitionTo;
t.invoke();
});
childDetectZone.scheduleMicroTask(zoneJsInternalStackFramesSymbol, () => {
throw Error();
}, undefined, (t) => {
t._transitionTo = fakeTransitionTo;
t.invoke();
});
}, undefined, (t) => {
t._transitionTo = fakeTransitionTo;
t.invoke();
}, () => { });
}, undefined, (t) => {
t._transitionTo = fakeTransitionTo;
t.invoke();
}, () => { });
});
});
Error.stackTraceLimit = originalStackTraceLimit;
});