'use strict'; /** * @license Angular v * (c) 2010-2022 Google LLC. https://angular.io/ * License: MIT */ /** * @fileoverview * @suppress {globalThis} */ const NEWLINE = '\n'; const IGNORE_FRAMES = {}; const creationTrace = '__creationTrace__'; const ERROR_TAG = 'STACKTRACE TRACKING'; const SEP_TAG = '__SEP_TAG__'; let sepTemplate = SEP_TAG + '@[native]'; class LongStackTrace { constructor() { this.error = getStacktrace(); this.timestamp = new Date(); } } function getStacktraceWithUncaughtError() { return new Error(ERROR_TAG); } function getStacktraceWithCaughtError() { try { throw getStacktraceWithUncaughtError(); } catch (err) { return err; } } // Some implementations of exception handling don't create a stack trace if the exception // isn't thrown, however it's faster not to actually throw the exception. const error = getStacktraceWithUncaughtError(); const caughtError = getStacktraceWithCaughtError(); const getStacktrace = error.stack ? getStacktraceWithUncaughtError : (caughtError.stack ? getStacktraceWithCaughtError : getStacktraceWithUncaughtError); function getFrames(error) { return error.stack ? error.stack.split(NEWLINE) : []; } function addErrorStack(lines, error) { let trace = getFrames(error); for (let i = 0; i < trace.length; i++) { const frame = trace[i]; // Filter out the Frames which are part of stack capturing. if (!IGNORE_FRAMES.hasOwnProperty(frame)) { lines.push(trace[i]); } } } function renderLongStackTrace(frames, stack) { const longTrace = [stack ? stack.trim() : '']; if (frames) { let timestamp = new Date().getTime(); for (let i = 0; i < frames.length; i++) { const traceFrames = frames[i]; const lastTime = traceFrames.timestamp; let separator = `____________________Elapsed ${timestamp - lastTime.getTime()} ms; At: ${lastTime}`; separator = separator.replace(/[^\w\d]/g, '_'); longTrace.push(sepTemplate.replace(SEP_TAG, separator)); addErrorStack(longTrace, traceFrames.error); timestamp = lastTime.getTime(); } } return longTrace.join(NEWLINE); } // if Error.stackTraceLimit is 0, means stack trace // is disabled, so we don't need to generate long stack trace // this will improve performance in some test(some test will // set stackTraceLimit to 0, https://github.com/angular/zone.js/issues/698 function stackTracesEnabled() { // Cast through any since this property only exists on Error in the nodejs // typings. return Error.stackTraceLimit > 0; } Zone['longStackTraceZoneSpec'] = { name: 'long-stack-trace', longStackTraceLimit: 10, // add a getLongStackTrace method in spec to // handle handled reject promise error. getLongStackTrace: function (error) { if (!error) { return undefined; } const trace = error[Zone.__symbol__('currentTaskTrace')]; if (!trace) { return error.stack; } return renderLongStackTrace(trace, error.stack); }, onScheduleTask: function (parentZoneDelegate, currentZone, targetZone, task) { if (stackTracesEnabled()) { const currentTask = Zone.currentTask; let trace = currentTask && currentTask.data && currentTask.data[creationTrace] || []; trace = [new LongStackTrace()].concat(trace); if (trace.length > this.longStackTraceLimit) { trace.length = this.longStackTraceLimit; } if (!task.data) task.data = {}; if (task.type === 'eventTask') { // Fix issue https://github.com/angular/zone.js/issues/1195, // For event task of browser, by default, all task will share a // singleton instance of data object, we should create a new one here // The cast to `any` is required to workaround a closure bug which wrongly applies // URL sanitization rules to .data access. task.data = { ...task.data }; } task.data[creationTrace] = trace; } return parentZoneDelegate.scheduleTask(targetZone, task); }, onHandleError: function (parentZoneDelegate, currentZone, targetZone, error) { if (stackTracesEnabled()) { const parentTask = Zone.currentTask || error.task; if (error instanceof Error && parentTask) { const longStack = renderLongStackTrace(parentTask.data && parentTask.data[creationTrace], error.stack); try { error.stack = error.longStack = longStack; } catch (err) { } } } return parentZoneDelegate.handleError(targetZone, error); } }; function captureStackTraces(stackTraces, count) { if (count > 0) { stackTraces.push(getFrames((new LongStackTrace()).error)); captureStackTraces(stackTraces, count - 1); } } function computeIgnoreFrames() { if (!stackTracesEnabled()) { return; } const frames = []; captureStackTraces(frames, 2); const frames1 = frames[0]; const frames2 = frames[1]; for (let i = 0; i < frames1.length; i++) { const frame1 = frames1[i]; if (frame1.indexOf(ERROR_TAG) == -1) { let match = frame1.match(/^\s*at\s+/); if (match) { sepTemplate = match[0] + SEP_TAG + ' (http://localhost)'; break; } } } for (let i = 0; i < frames1.length; i++) { const frame1 = frames1[i]; const frame2 = frames2[i]; if (frame1 === frame2) { IGNORE_FRAMES[frame1] = true; } else { break; } } } computeIgnoreFrames();