Best JavaScript code snippet using playwright-internal
ReactErrorUtils-test.js
Source:ReactErrorUtils-test.js  
...46        'foo',47        callback,48        null,49      );50      expect(() => ReactErrorUtils.rethrowCaughtError()).toThrow(err);51    });52    it(`should call the callback the passed arguments (${environment})`, () => {53      var callback = jest.fn();54      ReactErrorUtils.invokeGuardedCallback(55        'foo',56        callback,57        null,58        'arg1',59        'arg2',60      );61      expect(callback).toBeCalledWith('arg1', 'arg2');62    });63    it(`should call the callback with the provided context (${environment})`, () => {64      var context = {didCall: false};65      ReactErrorUtils.invokeGuardedCallback(66        'foo',67        function() {68          this.didCall = true;69        },70        context,71      );72      expect(context.didCall).toBe(true);73    });74    it(`should return a caught error (${environment})`, () => {75      const error = new Error();76      const returnValue = ReactErrorUtils.invokeGuardedCallback(77        'foo',78        function() {79          throw error;80        },81        null,82        'arg1',83        'arg2',84      );85      expect(returnValue).toBe(error);86    });87    it(`should return null if no error is thrown (${environment})`, () => {88      var callback = jest.fn();89      const returnValue = ReactErrorUtils.invokeGuardedCallback(90        'foo',91        callback,92        null,93      );94      expect(returnValue).toBe(null);95    });96    it(`can nest with same debug name (${environment})`, () => {97      const err1 = new Error();98      let err2;99      const err3 = new Error();100      const err4 = ReactErrorUtils.invokeGuardedCallback(101        'foo',102        function() {103          err2 = ReactErrorUtils.invokeGuardedCallback(104            'foo',105            function() {106              throw err1;107            },108            null,109          );110          throw err3;111        },112        null,113      );114      expect(err2).toBe(err1);115      expect(err4).toBe(err3);116    });117    it(`does not return nested errors (${environment})`, () => {118      const err1 = new Error();119      let err2;120      const err3 = ReactErrorUtils.invokeGuardedCallback(121        'foo',122        function() {123          err2 = ReactErrorUtils.invokeGuardedCallback(124            'foo',125            function() {126              throw err1;127            },128            null,129          );130        },131        null,132      );133      expect(err3).toBe(null); // Returns null because inner error was already captured134      expect(err2).toBe(err1);135    });136    it(`can be shimmed (${environment})`, () => {137      const ops = [];138      // Override the original invokeGuardedCallback139      ReactErrorUtils.invokeGuardedCallback = function(name, func, context, a) {140        ops.push(a);141        try {142          func.call(context, a);143        } catch (error) {144          return error;145        }146        return null;147      };148      var err = new Error('foo');149      var callback = function() {150        throw err;151      };152      ReactErrorUtils.invokeGuardedCallbackAndCatchFirstError(153        'foo',154        callback,155        null,156        'somearg',157      );158      expect(() => ReactErrorUtils.rethrowCaughtError()).toThrow(err);159      // invokeGuardedCallbackAndCatchFirstError and rethrowCaughtError close160      // over ReactErrorUtils.invokeGuardedCallback so should use the161      // shimmed version.162      expect(ops).toEqual(['somearg']);163    });164  }...ReactErrorUtils.js
Source:ReactErrorUtils.js  
1/**2 * Copyright 2013-present, Facebook, Inc.3 * All rights reserved.4 *5 * This source code is licensed under the BSD-style license found in the6 * LICENSE file in the root directory of this source tree. An additional grant7 * of patent rights can be found in the PATENTS file in the same directory.8 *9 * @providesModule ReactErrorUtils10 * @flow11 */12'use strict';13const invariant = require('fbjs/lib/invariant');14let caughtError = null;15let invokeGuardedCallback = function(name, func, context, a, b, c, d, e, f) {16  const funcArgs = Array.prototype.slice.call(arguments, 3);17  try {18    func.apply(context, funcArgs);19  } catch (error) {20    return error;21  }22  return null;23};24if (__DEV__) {25  /**26   * To help development we can get better devtools integration by simulating a27   * real browser event.28   */29  if (30    typeof window !== 'undefined' &&31    typeof window.dispatchEvent === 'function' &&32    typeof document !== 'undefined' &&33    typeof document.createEvent === 'function'34  ) {35    const fakeNode = document.createElement('react');36    let depth = 0;37    invokeGuardedCallback = function(name, func, context, a, b, c, d, e, f) {38      depth++;39      const thisDepth = depth;40      const funcArgs = Array.prototype.slice.call(arguments, 3);41      const boundFunc = function() {42        func.apply(context, funcArgs);43      };44      let fakeEventError = null;45      const onFakeEventError = function(event) {46        // Don't capture nested errors47        if (depth === thisDepth) {48          fakeEventError = event.error;49        }50      };51      const evtType = `react-${name ? name : 'invokeguardedcallback'}-${depth}`;52      window.addEventListener('error', onFakeEventError);53      fakeNode.addEventListener(evtType, boundFunc, false);54      const evt = document.createEvent('Event');55      evt.initEvent(evtType, false, false);56      fakeNode.dispatchEvent(evt);57      fakeNode.removeEventListener(evtType, boundFunc, false);58      window.removeEventListener('error', onFakeEventError);59      depth--;60      return fakeEventError;61    };62  }63}64let rethrowCaughtError = function() {65  if (caughtError) {66    const error = caughtError;67    caughtError = null;68    throw error;69  }70};71/**72 * Call a function while guarding against errors that happens within it.73 * Returns an error if it throws, otherwise null.74 *75 * @param {String} name of the guard to use for logging or debugging76 * @param {Function} func The function to invoke77 * @param {*} context The context to use when calling the function78 * @param {...*} args Arguments for function79 */80const ReactErrorUtils = {81  injection: {82    injectErrorUtils(injectedErrorUtils: Object) {83      invariant(84        typeof injectedErrorUtils.invokeGuardedCallback === 'function',85        'Injected invokeGuardedCallback() must be a function.',86      );87      invokeGuardedCallback = injectedErrorUtils.invokeGuardedCallback;88    },89  },90  invokeGuardedCallback: function<A, B, C, D, E, F, Context>(91    name: string | null,92    func: (a: A, b: B, c: C, d: D, e: E, f: F) => void,93    context: Context,94    a: A,95    b: B,96    c: C,97    d: D,98    e: E,99    f: F,100  ): Error | null {101    return invokeGuardedCallback.apply(this, arguments);102  },103  /**104   * Same as invokeGuardedCallback, but instead of returning an error, it stores105   * it in a global so it can be rethrown by `rethrowCaughtError` later.106   *107   * @param {String} name of the guard to use for logging or debugging108   * @param {Function} func The function to invoke109   * @param {*} context The context to use when calling the function110   * @param {...*} args Arguments for function111   */112  invokeGuardedCallbackAndCatchFirstError: function<A, B, C, D, E, F, Context>(113    name: string | null,114    func: (a: A, b: B, c: C, d: D, e: E, f: F) => void,115    context: Context,116    a: A,117    b: B,118    c: C,119    d: D,120    e: E,121    f: F,122  ): void {123    const error = ReactErrorUtils.invokeGuardedCallback.apply(this, arguments);124    if (error !== null && caughtError === null) {125      caughtError = error;126    }127  },128  /**129   * During execution of guarded functions we will capture the first error which130   * we will rethrow to be handled by the top level error handler.131   */132  rethrowCaughtError: function() {133    return rethrowCaughtError.apply(this, arguments);134  },135};...EventBatching.js
Source:EventBatching.js  
...52    'processEventQueue(): Additional events were enqueued while processing ' +53      'an event queue. Support for this has not yet been implemented.',54  );55  // This would be a good time to rethrow if any of the event handlers threw.56  rethrowCaughtError();...cc6960ReactErrorUtils.js
Source:cc6960ReactErrorUtils.js  
...15}16var ReactErrorUtils={17invokeGuardedCallback:invokeGuardedCallback,18invokeGuardedCallbackWithCatch:invokeGuardedCallback,19rethrowCaughtError:function rethrowCaughtError(){20if(caughtError){21var error=caughtError;22caughtError=null;23throw error;24}25}};26if(__DEV__){27if(typeof window!=='undefined'&&28typeof window.dispatchEvent==='function'&&29typeof document!=='undefined'&&30typeof document.createEvent==='function'){31var fakeNode=document.createElement('react');32ReactErrorUtils.invokeGuardedCallback=function(33name,...ee64dbReactErrorUtils.js
Source:ee64dbReactErrorUtils.js  
...15}16var ReactErrorUtils={17invokeGuardedCallback:invokeGuardedCallback,18invokeGuardedCallbackWithCatch:invokeGuardedCallback,19rethrowCaughtError:function rethrowCaughtError(){20if(caughtError){21var error=caughtError;22caughtError=null;23throw error;24}25}};26if(__DEV__){27if(typeof window!=='undefined'&&28typeof window.dispatchEvent==='function'&&29typeof document!=='undefined'&&30typeof document.createEvent==='function'){31var fakeNode=document.createElement('react');32ReactErrorUtils.invokeGuardedCallback=function(33name,...Using AI Code Generation
1const { InternalError } = require('playwright/lib/server/errors');2const { rethrowCaughtError } = require('playwright/lib/server/progress');3const { InternalError } = require('playwright/lib/server/errors');4const { rethrowCaughtError } = require('playwright/lib/server/progress');5const { InternalError } = require('playwright/lib/server/errors');6const { rethrowCaughtError } = require('playwright/lib/server/progress');7const { InternalError } = require('playwright/lib/server/errors');8const { rethrowCaughtError } = require('playwright/lib/server/progress');9const { InternalError } = require('playwright/lib/server/errors');10const { rethrowCaughtError } = require('playwright/lib/server/progress');11const { InternalError } = require('playwright/lib/server/errors');12const { rethrowCaughtError } = require('playwright/lib/server/progress');13const { InternalError } = require('playwright/lib/server/errors');14const { rethrowCaughtError } = require('playwright/lib/server/progress');15const { InternalError } = require('playwright/lib/server/errors');16const { rethrowCaughtError } = require('playwright/lib/server/progress');17const { InternalError } = require('playwright/lib/server/errors');18const { rethrowCaughtError } = require('playwright/lib/server/progress');19const { InternalError } = require('playwright/lib/server/errors');20const { rethrowCaughtError } = require('playwright/lib/server/progress');21const { InternalError } = require('playwright/lib/server/errors');22const { rethrowCaughtError } = require('playwright/lib/server/progress');Using AI Code Generation
1const { Playwright } = require('playwright');2const { InternalError } = Playwright;3try {4  await page.click('button');5} catch (e) {6  if (e instanceof InternalError) {7    e.rethrowCaughtError();8  }9}10const { Playwright } = require('playwright');11const { InternalError } = Playwright;12try {13  await page.click('button');14} catch (e) {15  if (e instanceof InternalError) {16    e.rethrowCaughtError();17  }18}19const { Playwright } = require('playwright');20const { InternalError } = Playwright;21try {22  await page.click('button');23} catch (e) {24  if (e instanceof InternalError) {25    e.rethrowCaughtError();26  }27}28const { Playwright } = require('playwright');29const { InternalError } = Playwright;30try {31  await page.click('button');32} catch (e) {33  if (e instanceof InternalError) {34    e.rethrowCaughtError();35  }36}37const { Playwright } = require('playwright');38const { InternalError } = Playwright;39try {40  await page.click('button');41} catch (e) {42  if (e instanceof InternalError) {43    e.rethrowCaughtError();44  }45}46const { Playwright } = require('playwright');47const { InternalError } = Playwright;48try {49  await page.click('button');50} catch (e) {51  if (e instanceof InternalError) {52    e.rethrowCaughtError();53  }54}55const { Playwright } = require('playwright');56const { InternalError } = Playwright;57try {58  await page.click('button');59} catch (e) {60  if (e instanceofUsing AI Code Generation
1const { InternalError } = require('playwright/lib/server/errors');2try {3  throw new InternalError('error message');4} catch (e) {5  InternalError.rethrowCaughtError(e);6}7const { Error } = require('playwright/lib/server/errors');8try {9  throw new Error('error message');10} catch (e) {11  Error.rethrowCaughtError(e);12}13const { TimeoutError } = require('playwright/lib/server/errors');14try {15  throw new TimeoutError('error message');16} catch (e) {17  TimeoutError.rethrowCaughtError(e);18}19const { WaitTaskTimeoutError } = require('playwright/lib/server/errors');20try {21  throw new WaitTaskTimeoutError('error message');22} catch (e) {23  WaitTaskTimeoutError.rethrowCaughtError(e);24}25const { ValidationError } = require('playwright/lib/server/errors');26try {27  throw new ValidationError('error message');28} catch (e) {29  ValidationError.rethrowCaughtError(e);30}31const { AssertionError } = require('playwright/lib/server/errors');32try {33  throw new AssertionError('error message');34} catch (e) {35  AssertionError.rethrowCaughtError(e);36}37const { BrowserContextError } = require('playwright/lib/server/errors');38try {39  throw new BrowserContextError('error message');40} catch (e) {41  BrowserContextError.rethrowCaughtError(e);42}43const { BrowserError } = require('playwright/lib/server/errors');44try {45  throw new BrowserError('error message');46} catch (e) {47  BrowserError.rethrowCaughtError(e);48}49const { BrowserTypeLaunchPersistentContextError } = require('playwright/lib/server/errors');50try {51  throw new BrowserTypeLaunchPersistentContextError('error message');52} catch (Using AI Code Generation
1const { rethrowCaughtError } = require('playwright/lib/utils/stackTrace');2try {3  throw new Error('error');4} catch (error) {5  rethrowCaughtError(error);6}7const { rethrowCaughtError } = require('playwright/lib/utils/stackTrace');8try {9  throw new Error('error');10} catch (error) {11  rethrowCaughtError(error);12}13const { rethrowCaughtError } = require('playwright/lib/utils/stackTrace');14try {15  throw new Error('error');16} catch (error) {17  rethrowCaughtError(error);18}19const { rethrowCaughtError } = require('playwright/lib/utils/stackTrace');20try {21  throw new Error('error');22} catch (error) {23  rethrowCaughtError(error);24}25const { rethrowCaughtError } = require('playwright/lib/utils/stackTrace');26try {27  throw new Error('error');28} catch (error) {29  rethrowCaughtError(error);30}31const { rethrowCaughtError } = require('playwright/lib/utils/stackTrace');32try {33  throw new Error('error');34} catch (error) {35  rethrowCaughtError(error);36}37const { rethrowCaughtError } = require('playwright/lib/utils/stackTrace');38try {39  throw new Error('error');40} catch (error) {41  rethrowCaughtError(error);42}43const { rethrowCaughtError } = require('playwright/lib/utils/stackTrace');44try {45  throw new Error('error');46} catch (error) {47  rethrowCaughtError(error);48}Using AI Code Generation
1const { InternalError } = require('playwright/lib/utils/internalError');2const { rethrowCaughtError } = new InternalError();3try {4    await page.click('button');5} catch (err) {6    rethrowCaughtError(err);7}8    at Page._onClose (/Users/username/myproject/node_modules/playwright/lib/server/page.js:106:15)9    at CDPSession.Page.client.on.event (/Users/username/myproject/node_modules/playwright/lib/server/page.js:84:59)10    at CDPSession.emit (events.js:315:20)11    at CDPSession._onMessage (/Users/username/myproject/node_modules/playwright/lib/server/cdpsession.js:123:14)12    at WebSocketTransport._ws.addEventListener.event (/Users/username/myproject/node_modules/playwright/lib/server/webSocketTransport.js:71:24)13    at WebSocket.onMessage (/Users/username/myproject/node_modules/ws/lib/event-target.js:132:16)14    at WebSocket.emit (events.js:315:20)15    at Receiver.receiverOnMessage (/Users/username/myproject/node_modules/ws/lib/websocket.js:789:20)16    at Receiver.emit (events.js:315:20)17    at Receiver.dataMessage (/Users/username/myproject/node_modules/ws/lib/receiver.js:437:14)18    at Receiver.getData (/Users/username/myproject/node_modules/ws/lib/receiver.js:367:17)19    at Receiver.startLoop (/Users/username/myproject/node_modules/ws/lib/receiver.js:143:22)20    at Receiver._write (/Users/username/myproject/node_modules/ws/lib/receiver.js:78:10)21    at doWrite (_Using AI Code Generation
1const { InternalError } = require('playwright');2const { rethrowCaughtError } = InternalError.prototype;3const error = new Error('error');4const caughtError = new InternalError('caught', error);5rethrowCaughtError.call(caughtError);6const { InternalError } = require('playwright');7const { getError } = InternalError.prototype;8const error = new Error('error');9const caughtError = new InternalError('caught', error);10const rethrownError = getError.call(caughtError);11console.log(rethrownError);12const { TimeoutError } = require('playwright');13const { getError } = TimeoutError.prototype;14const error = new Error('error');15const caughtError = new TimeoutError('caught', error);16const rethrownError = getError.call(caughtError);17console.log(rethrownError);18const { Error } = require('playwright');19const { getError } = Error.prototype;20const error = new Error('error');21const caughtError = new Error('caught', error);22const rethrownError = getError.call(caughtError);23console.log(rethrownError);24const { Error } = require('playwright');25const { getError } = Error.prototype;26const error = new Error('error');27const caughtError = new Error('caught', error);28const rethrownError = getError.call(caughtError);29console.log(rethrownError);30const { Error } = require('playwright');31const { getError } = Error.prototype;32const error = new Error('error');33const caughtError = new Error('caught', error);34const rethrownError = getError.call(caughtError);35console.log(rethrownError);36const { Error } = require('playwright');37const { getError } = Error.prototype;38const error = new Error('error');39const caughtError = new Error('caught', error);40const rethrownError = getError.call(caughtError);41console.log(rethrownError);42const { Error } = require('playwrightUsing AI Code Generation
1const { InternalError } = require("playwright-core/lib/utils/stackTrace");2const error = new Error("Test error");3const internalError = new InternalError(error);4console.log(internalError.stack);5const { InternalError } = require("playwright-core/lib/utils/stackTrace");6const error = new Error("Test error");7const internalError = new InternalError(error);8console.log(internalError.stack);9const { InternalError } = require("playwright-core/lib/utils/stackTrace");10const error = new Error("Test error");11const internalError = new InternalError(error);12console.log(internalError.stack);13const { InternalError } = require("playwright-core/lib/utils/stackTrace");14const error = new Error("Test error");15const internalError = new InternalError(error);16console.log(internalError.stack);17const { InternalError } = require("playwright-core/lib/utils/stackTrace");18const error = new Error("Test error");19const internalError = new InternalError(error);20console.log(internalError.stack);21const { InternalError } = require("playwright-core/lib/utils/stackTrace");22const error = new Error("Test error");23const internalError = new InternalError(error);24console.log(internalError.stack);25const { InternalError } = require("playwright-core/lib/utils/stackTrace");26const error = new Error("Test error");27const internalError = new InternalError(error);28console.log(internalError.stack);29const { InternalError } = require("playwright-core/lib/utils/stackTrace");30const error = new Error("Test error");31const internalError = new InternalError(error);32console.log(internalError.stack);33const { InternalError } = require("playwright-core/lib/utils/stackTrace");34const error = new Error("Test error");35const internalError = new InternalError(error);36console.log(internalError.stackUsing AI Code Generation
1const {chromium} = require('playwright');2const {InternalError} = require('playwright/lib/utils/stackTrace');3const {TestServer} = require('playwright/test/server/testServer');4const {expect} = require('chai');5const {describe, it} = require('mocha');6(async () => {7  const browser = await chromium.launch();8  const context = await browser.newContext();9  const page = await context.newPage();10  const server = await TestServer.create();11  server.setRoute('/empty.html', (req, res) => {12    res.statusCode = 500;13    res.end();14  });15  try {16    await page.goto(server.EMPTY_PAGE);17  } catch (e) {18    InternalError.rethrowCaughtError(e);19  }20  await server.stop();21  await browser.close();22})();LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.
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