Best JavaScript code snippet using playwright-internal
DOMLegacyEventPluginSystem.js
Source:DOMLegacyEventPluginSystem.js  
...385  eventSystemFlags: EventSystemFlags,386  capture: boolean,387): any => void {388  const rawEventName = getRawEventName(topLevelType);389  const listener = createEventListenerWrapperWithPriority(390    targetContainer,391    topLevelType,392    eventSystemFlags,393  );394  const unsubscribeListener = capture395    ? addEventCaptureListener(targetContainer, rawEventName, listener)396    : addEventBubbleListener(targetContainer, rawEventName, listener);397  return unsubscribeListener;398}399function getParent(inst: Object | null): Object | null {400  if (!inst) {401    return null;402  }403  do {...env.js
Source:env.js  
1const fs = require('fs');2const path = require('path');3const paths = require('./paths');4// Make sure that including paths.js after env.js will read .env variables.5delete require.cache[require.resolve('./paths')];6const NODE_ENV = process.env.NODE_ENV;7if (!NODE_ENV) {8  throw new Error(9    'The NODE_ENV environment variable is required but was not specified.'10  );11}12// https://github.com/bkeepers/dotenv#what-other-env-files-can-i-use13const dotenvFiles = [14  `${paths.dotenv}.${NODE_ENV}.local`,15  `${paths.dotenv}.${NODE_ENV}`,16  // Don't include `.env.local` for `test` environment17  // since normally you expect tests to produce the same18  // results for everyone19  NODE_ENV !== 'test' && `${paths.dotenv}.local`,20  paths.dotenv,21].filter(Boolean);22// Load environment variables from .env* files. Suppress warnings using silent23// if this file is missing. dotenv will never modify any environment variables24// that have already been set.  Variable expansion is supported in .env files.25// https://github.com/motdotla/dotenv26// https://github.com/motdotla/dotenv-expand27dotenvFiles.forEach(dotenvFile => {28  if (fs.existsSync(dotenvFile)) {29    require('dotenv-expand')(30      require('dotenv').config({31        path: dotenvFile,32      })33    );34  }35});36// We support resolving modules according to `NODE_PATH`.37// This lets you use absolute paths in imports inside large monorepos:38// https://github.com/facebook/create-react-app/issues/253.39// It works similar to `NODE_PATH` in Node itself:40// https://nodejs.org/api/modules.html#modules_loading_from_the_global_folders41// Note that unlike in Node, only *relative* paths from `NODE_PATH` are honored.42// Otherwise, we risk importing Node.js core modules into an app instead of webpack shims.43// https://github.com/facebook/create-react-app/issues/1023#issuecomment-26534442144// We also resolve them to make sure all tools using them work consistently.45const appDirectory = fs.realpathSync(process.cwd());46process.env.NODE_PATH = (process.env.NODE_PATH || '')47  .split(path.delimiter)48  .filter(folder => folder && !path.isAbsolute(folder))49  .map(folder => path.resolve(appDirectory, folder))50  .join(path.delimiter);51// Grab NODE_ENV and REACT_APP_* environment variables and prepare them to be52// injected into the application via DefinePlugin in webpack configuration.53const REACT_APP = /^REACT_APP_/i;54function getClientEnvironment(publicUrl) {55  const raw = Object.keys(process.env)56    .filter(key => REACT_APP.test(key))57    .reduce(58      (env, key) => {59        env[key] = process.env[key];60        return env;61      },62      {63        // Useful for determining whether weâre running in production mode.64        // Most importantly, it switches React into the correct mode.65        NODE_ENV: process.env.NODE_ENV || 'development',66        // Useful for resolving the correct path to static assets in `public`.67        // For example, <img src={process.env.PUBLIC_URL + '/img/logo.png'} />.68        // This should only be used as an escape hatch. Normally you would put69        // images into the `src` and `import` them in code to get their paths.70        PUBLIC_URL: publicUrl,71        // We support configuring the sockjs pathname during development.72        // These settings let a developer run multiple simultaneous projects.73        // They are used as the connection `hostname`, `pathname` and `port`74        // in webpackHotDevClient. They are used as the `sockHost`, `sockPath`75        // and `sockPort` options in webpack-dev-server.76        WDS_SOCKET_HOST: process.env.WDS_SOCKET_HOST,77        WDS_SOCKET_PATH: process.env.WDS_SOCKET_PATH,78        WDS_SOCKET_PORT: process.env.WDS_SOCKET_PORT,79      }80    );81  // Stringify all values so we can feed into webpack DefinePlugin82  const stringified = {83    'process.env': Object.keys(raw).reduce((env, key) => {84      env[key] = JSON.stringify(raw[key]);85      return env;86    }, {}),87    "__DEV__": false,88    "__PROFILE__": true,89    "__EXPERIMENTAL__": true,90    "__UMD__": true,91    __NEW_RECONCILER__: true,92    '__LOG_NAMES__': JSON.stringify([93      // 'createRoot',94      // 'ReactDOMRoot',95      // 'createRootImpl',96      // 'createContainer',97      // 'createFiberRoot',98      // 'createHostRootFiber',99      // 'createFiber',100      // 'FiberNode',101      // 'initializeUpdateQueue',102      // 'markContainerAsRoot',103      // 'listenToAllSupportedEvents',104      // 'jsx',105      'render',106      // 'updateContainer',107      // 'enqueueUpdate',108      // 'scheduleUpdateOnFiber',109      // 'ensureRootIsScheduled',110      // 'unstable_scheduleCallback',111      // 'requestHostCallback',112      // 'performWorkUntilDeadline',113      // 'flushWork',114      // 'workLoop',115      // 'performConcurrentWorkOnRoot',116      // 'flushPassiveEffects',117      // 'renderRootConcurrent',118      // 'prepareFreshStack',119      // 'createWorkInProgress',120      // 'createFiber',121      // 'FiberNode',122      // 'performUnitOfWork',123      // 'beginWork',124      // 'setInitialDOMProperties',125      // 'setInitialProperties',126      // 'diffProperties',127      // 'dispatchEvent',128      // 'mountIndeterminateComponent',129      // 'renderWithHooks',130      'useState',131      // 'mountState',132      // 'mountWorkInProgressHook',133      // 'updateHostRoot',134      // 'cloneUpdateQueue',135      // 'processUpdateQueue',136      // 'getStateFromUpdate',137      // 'reconcileChildren',138      // 'reconcileChildFibers',139      // 'reconcileChildrenArray',140      // 'createChild',141      // 'mountChildFibers',142      // 'createFiberFromElement',143      // 'createFiberFromTypeAndProps',144      // 'completeUnitOfWork',145      // 'completeWork',146      // 'commitRootImpl',147      // 'commitBeforeMutationEffects',148      // 'commitBeforeMutationEffectsImpl',149      // 'commitBeforeMutationLifeCycles',150      // 'clearContainer',151      // 'commitMutationEffectsImpl',152      // 'commitPlacement',153      // 'getHostParentFiber',154      // 'getHostSibling',155      // 'insertOrAppendPlacementNodeIntoContainer',156      // 'insertOrAppendPlacementNode',157      // 'trapClickOnNonInteractiveElement',158      // 'resetAfterCommit',159      // 'restoreSelection',160      // 'recursivelyCommitLayoutEffects',161      // 'ensureRootIsScheduled',162      // 'createInstance',163      // 'createElement',164      // 'updateFiberProps',165      // 'bubbleProperties',166      // 'dispatchDiscreteEvent',167      // 'createEventListenerWrapperWithPriority',168      'updateWorkInProgressHook'169    ]),170  };171  return { raw, stringified };172}...js-example.js
Source:js-example.js  
1import type {DOMEventName} from './DOMEventNames';2import {3  type EventSystemFlags,4  SHOULD_NOT_DEFER_CLICK_FOR_FB_SUPPORT_MODE,5  IS_LEGACY_FB_SUPPORT_MODE,6  SHOULD_NOT_PROCESS_POLYFILL_EVENT_PLUGINS,7} from './EventSystemFlags';8import type {AnyNativeEvent} from './PluginModuleType';9import type {ReactSyntheticEvent} from './ReactSyntheticEventType';10import type {ElementListenerMapEntry} from '../client/ReactDOMComponentTree';11import type {EventPriority} from 'shared/ReactTypes';12import type {Fiber} from 'react-reconciler/src/ReactInternalTypes';13import {registrationNameDependencies} from './EventRegistry';14import {15  IS_CAPTURE_PHASE,16  IS_EVENT_HANDLE_NON_MANAGED_NODE,17  IS_NON_DELEGATED,18} from './EventSystemFlags';19import {20  HostRoot,21  HostPortal,22  HostComponent,23  HostText,24  ScopeComponent,25} from 'react-reconciler/src/ReactWorkTags';26import getEventTarget from './getEventTarget';27import {28  getClosestInstanceFromNode,29  getEventListenerMap,30  getEventHandlerListeners,31} from '../client/ReactDOMComponentTree';32import {COMMENT_NODE} from '../shared/HTMLNodeType';33import {batchedEventUpdates} from './ReactDOMUpdateBatching';34import getListener from './getListener';35import {passiveBrowserEventsSupported} from './checkPassiveEvents';36import {37  enableLegacyFBSupport,38  enableCreateEventHandleAPI,39  enableScopeAPI,40} from 'shared/ReactFeatureFlags';41import {42  invokeGuardedCallbackAndCatchFirstError,43  rethrowCaughtError,44} from 'shared/ReactErrorUtils';45import {createEventListenerWrapperWithPriority} from './ReactDOMEventListener';46import {47  removeEventListener,48  addEventCaptureListener,49  addEventBubbleListener,50  addEventBubbleListenerWithPassiveFlag,51  addEventCaptureListenerWithPassiveFlag,52} from './EventListener';53import {topLevelEventsToReactNames} from './DOMEventProperties';54import * as BeforeInputEventPlugin from './plugins/BeforeInputEventPlugin';55import * as ChangeEventPlugin from './plugins/ChangeEventPlugin';56import * as EnterLeaveEventPlugin from './plugins/EnterLeaveEventPlugin';57import * as SelectEventPlugin from './plugins/SelectEventPlugin';58import * as SimpleEventPlugin from './plugins/SimpleEventPlugin';59type DispatchListener = {|60  instance: null | Fiber,61  listener: Function,62  currentTarget: EventTarget,63|};64type DispatchEntry = {|65  event: ReactSyntheticEvent,66  listeners: Array<DispatchListener>,67|};68export type DispatchQueue = Array<DispatchEntry>;69// TODO: remove top-level side effect.70SimpleEventPlugin.registerEvents();71EnterLeaveEventPlugin.registerEvents();72ChangeEventPlugin.registerEvents();73SelectEventPlugin.registerEvents();74BeforeInputEventPlugin.registerEvents();75function extractEvents(76  dispatchQueue: DispatchQueue,77  domEventName: DOMEventName,78  targetInst: null | Fiber,79  nativeEvent: AnyNativeEvent,80  nativeEventTarget: null | EventTarget,81  eventSystemFlags: EventSystemFlags,82  targetContainer: EventTarget,83) {84  // TODO: we should remove the concept of a "SimpleEventPlugin".85  // This is the basic functionality of the event system. All86  // the other plugins are essentially polyfills. So the plugin87  // should probably be inlined somewhere and have its logic88  // be core the to event system. This would potentially allow89  // us to ship builds of React without the polyfilled plugins below.90  SimpleEventPlugin.extractEvents(91    dispatchQueue,92    domEventName,93    targetInst,94    nativeEvent,95    nativeEventTarget,96    eventSystemFlags,97    targetContainer,98  );99  const shouldProcessPolyfillPlugins =100    (eventSystemFlags & SHOULD_NOT_PROCESS_POLYFILL_EVENT_PLUGINS) === 0;101  // We don't process these events unless we are in the102  // event's native "bubble" phase, which means that we're103  // not in the capture phase. That's because we emulate104  // the capture phase here still. This is a trade-off,105  // because in an ideal world we would not emulate and use106  // the phases properly, like we do with the SimpleEvent107  // plugin. However, the plugins below either expect108  // emulation (EnterLeave) or use state localized to that109  // plugin (BeforeInput, Change, Select). The state in110  // these modules complicates things, as you'll essentially111  // get the case where the capture phase event might change112  // state, only for the following bubble event to come in113  // later and not trigger anything as the state now114  // invalidates the heuristics of the event plugin. We115  // could alter all these plugins to work in such ways, but116  // that might cause other unknown side-effects that we117  // can't forsee right now.118  if (shouldProcessPolyfillPlugins) {119    EnterLeaveEventPlugin.extractEvents(120      dispatchQueue,121      domEventName,122      targetInst,123      nativeEvent,124      nativeEventTarget,125      eventSystemFlags,126      targetContainer,127    );128    ChangeEventPlugin.extractEvents(129      dispatchQueue,130      domEventName,131      targetInst,132      nativeEvent,133      nativeEventTarget,134      eventSystemFlags,135      targetContainer,136    );137    SelectEventPlugin.extractEvents(138      dispatchQueue,139      domEventName,140      targetInst,141      nativeEvent,142      nativeEventTarget,143      eventSystemFlags,144      targetContainer,145    );146    BeforeInputEventPlugin.extractEvents(147      dispatchQueue,148      domEventName,149      targetInst,150      nativeEvent,151      nativeEventTarget,152      eventSystemFlags,153      targetContainer,154    );155  }...DOMPluginEventSystem.js
Source:DOMPluginEventSystem.js  
...51  domEventName,52  eventSystemFlags,53  isCapturePhaseListener54) => {55  const listener = createEventListenerWrapperWithPriority(56    targetContainer,57    domEventName,58    eventSystemFlags59  );60  let isPassiveListener;61  if (62    domEventName === 'touchstart' ||63    domEventName === 'touchmove' ||64    domEventName === 'wheel'65  ) {66    isPassiveListener = true;67  }68  if (isCapturePhaseListener) {69    if (isPassiveListener !== undefined) {...ReactDOMEventListener.js
Source:ReactDOMEventListener.js  
1import {2  DiscreteEvent,3  UserBlockingEvent,4  ContinuousEvent,5} from '../../../ReactTypes';6import { getEventPriorityForPluginSystem } from './DOMEventProperties';7let _enabled = true;8const setEnabled = (enabled) => {9  _enabled = !!enabled;10};11const isEnabled = () => _enabled;12const dispatchDiscreteEvent = (13  domEventName,14  eventSystemFlags,15  container,16  nativeEvent17) => {};18const dispatchUserBlockingUpdate = (19  domEventName,20  eventSystemFlags,21  container,22  nativeEvent23) => {};24const dispatchEvent = (25  domEventName,26  eventSystemFlags,27  container,28  nativeEvent29) => {};30const createEventListenerWrapperWithPriority = (31  targetContainer,32  domEventName,33  eventSystemFlags34) => {35  const eventPriority = getEventPriorityForPluginSystem(domEventName);36  let listenerWrapper;37  switch (eventPriority) {38    case DiscreteEvent:39      listenerWrapper = dispatchDiscreteEvent;40      break;41    case UserBlockingEvent:42      listenerWrapper = dispatchUserBlockingUpdate;43      break;44    case ContinuousEvent:45    default:46      listenerWrapper = dispatchEvent;47      break;48  }49  return listenerWrapper.bind(50    null,51    domEventName,52    eventSystemFlags,53    targetContainer54  );55};56export {57  _enabled,58  setEnabled,59  isEnabled,60  createEventListenerWrapperWithPriority,...Using AI Code Generation
1const {createEventListenerWrapperWithPriority} = require('playwright/lib/client/eventDispatcher');2const {chromium} = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const page = await browser.newPage();6  const client = await page.context().newCDPSession(page);7  await client.send('Runtime.enable');8  const wrapper = createEventListenerWrapperWithPriority((event) => {9    console.log(event);10  }, 10);11  await client.send('Runtime.onConsoleAPICalled', {handler: wrapper});12  await page.evaluate(() => console.log('hello'));13  await browser.close();14})();15    at CDPSession._onMessage (/Users/rudraksh/Desktop/playwright/node_modules/playwright/lib/client/cjs/cjs.js:140:23)16    at CDPSession.emit (events.js:315:20)17    at CDPSession._onMessage (/Users/rudraksh/Desktop/playwright/node_modules/playwright/lib/client/cjs/cjs.js:140:23)18    at CDPSession.emit (events.js:315:20)19    at CDPSession._onMessage (/Users/rudraksh/Desktop/playwright/node_modules/playwright/lib/client/cjs/cjs.js:140:23)20    at CDPSession.emit (events.js:315:20)21    at CDPSession._onMessage (/Users/rudraksh/Desktop/playwright/node_modules/playwright/lib/client/cjs/cjs.js:140:23)22    at CDPSession.emit (events.js:315:20)23    at CDPSession._onMessage (/Users/rudraksh/Desktop/playwright/node_modules/playwright/lib/client/cjs/cjs.js:140:23)24    at CDPSession.emit (events.js:315:20)Using AI Code Generation
1const { createEventListenerWrapperWithPriority } = require('playwright/lib/server/dom.js');2const { createServer } = require('http');3const { chromium } = require('playwright');4const server = createServer(async (req, res) => {5  const browser = await chromium.launch();6  const context = await browser.newContext();7  const page = await context.newPage();8  await page.setContent(`<html><body><div id="target"></div></body></html>`);9  const target = await page.$('#target');10  const wrapper = createEventListenerWrapperWithPriority('click', (event) => {11    console.log('event', event);12  }, 1);13  await target.evaluate((target, wrapper) => {14    target.addEventListener('click', wrapper);15  }, wrapper);16  await page.evaluate(() => {17    document.querySelector('#target').click();18  });19  await browser.close();20  res.end('ok');21});22server.listen(8000);23const { createEventListenerWrapperWithPriority } = require('playwright/lib/server/dom.js');24const { createServer } = require('http');25const { chromium } = require('playwright');26const server = createServer(async (req, res) => {27  const browser = await chromium.launch();28  const context = await browser.newContext();29  const page = await context.newPage();30  await page.setContent(`<html><body><div id="target"></div></body></html>`);31  const target = await page.$('#target');32  const wrapper = createEventListenerWrapperWithPriority('click', (event) => {33    console.log('event', event);34  }, 1);35  await target.evaluate((target, wrapper) => {36    target.addEventListener('click', wrapper);37  }, wrapper);38  await page.evaluate(() => {39    document.querySelector('#target').click();40  });41  await browser.close();42  res.end('ok');43});44server.listen(8000);Using AI Code Generation
1const { createEventListenerWrapperWithPriority } = require('playwright-core/lib/server/injected/injectedScript');2const { createEventListenersWrapper } = require('playwright-core/lib/server/injected/injectedScript');3const { createEventListenerWrapper } = require('playwright-core/lib/server/injected/injectedScript');4const { createEventListenerWrapperWithModifier } = require('playwright-core/lib/server/injected/injectedScript');5const { createEventListenerWrapperWithModifierAndPriority } = require('playwright-core/lib/server/injected/injectedScript');6const { createEventListenerWrapperWithModifierAndStopImmediatePropagation } = require('playwright-core/lib/server/injected/injectedScript');7const { createEventListenerWrapperWithModifierAndStopImmediatePropagationAndPriority } = require('playwright-core/lib/server/injected/injectedScript');8const { createEventListenerWrapperWithStopImmediatePropagation } = require('playwright-core/lib/server/injected/injectedScript');9const { createEventListenerWrapperWithStopImmediatePropagationAndPriority } = require('playwright-core/lib/server/injected/injectedScript');10const { createEventListenersWrapperWithModifier } = require('playwright-core/lib/server/injected/injectedScript');11const { createEventListenersWrapperWithModifierAndPriority } = require('playwright-core/lib/server/injected/injectedScript');12const { createEventListenersWrapperWithModifierAndStopImmediatePropagation } = require('playwright-core/lib/server/injected/injectedScript');13const { createEventListenersWrapperWithModifierAndStopImmediatePropagationAndPriority } = require('playwright-core/lib/server/injected/injectedScript');14const { createEventListenersWrapperWithPriority } = require('playwright-core/lib/server/injected/injectedScript');15const { createEventListenersWrapperWithStopImmediatePropagation } = require('playwright-core/lib/server/injected/injectedScript');16const { createEventListenersWrapperWithStopImmediatePropagationAndPriority } = require('playwright-core/lib/server/injected/injectedScript');17const { createEventListenersWrapperWithModifierAndStopImmediatePropagationAndPriorityAndPassive } = require('playwright-core/lib/server/injected/injectedScript');18const { createEventListenerWrapperWithModifierAndStopImmediatePropagationAndPriorityAndPassive } = require('playwright-core/lib/server/injected/injectedScript');19const { createEventListenerWrapperWithModifierAndStopImmediatePropagationAndPassive } = require('playwright-core/lib/server/injected/injectedScript');20const { createEventListenerWrapperWithModifierAndPassive } = requireUsing AI Code Generation
1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const page = await browser.newPage();5  page._delegate.createEventListenerWrapperWithPriority('click', 1, (event) => {6    console.log(event);7  });8  page.frames()[0]._delegate.createEventListenerWrapperWithPriority('click', 1, (event) => {9    console.log(event);10  });11  await page.close();12  await browser.close();13})();Using AI Code Generation
1const { createEventListenerWrapperWithPriority } = require('playwright/lib/server/dom.js');2const { createEventListenerWrapper } = require('playwright/lib/server/dom.js');3const eventListenerWrapper = createEventListenerWrapperWithPriority(1, (event, eventHandler) => {4  console.log('before event handler');5  eventHandler(event);6  console.log('after event handler');7});8const eventListenerWrapper2 = createEventListenerWrapper((event, eventHandler) => {9  console.log('before event handler');10  eventHandler(event);11  console.log('after event handler');12});13const event = {14  stopPropagation: () => {},15  preventDefault: () => {},16  target: {17    dispatchEvent: (event) => {18      console.log('dispatch event');19    },20  },21};22const eventHandler = () => {23  console.log('event handler');24};25eventListenerWrapper(event, eventHandler);26eventListenerWrapper2(event, eventHandler);27const { createEventListenerWrapperWithPriority } = require('playwright/lib/server/dom.js');28const { createEventListenerWrapper } = require('playwright/lib/server/dom.js');29const eventListenerWrapper = createEventListenerWrapperWithPriority(1, (event, eventHandler) => {30  console.log('before event handler');31  eventHandler(event);32  console.log('after event handler');33});34const eventListenerWrapper2 = createEventListenerWrapper((event, eventHandler) => {35  console.log('before event handler');36  eventHandler(event);37  console.log('after event handler');38});39const event = {40  stopPropagation: () => {},41  preventDefault: () => {},42  target: {43    dispatchEvent: (event) => {44      console.log('dispatch event');45    },46  },47};48const eventHandler = () => {49  console.log('event handler');50};51eventListenerWrapper(event, eventHandler);52eventListenerWrapper2(event, eventHandler);53const { createEventListenerWrapperWithPriority } =Using AI Code Generation
1const { createEventListenerWrapperWithPriority } = require('playwright/lib/server/frames');2const { createEvent } = require('playwright/lib/server/frames');3const { createCustomEvent } = require('playwright/lib/server/frames');4const event = createEvent('click', { x: 100, y: 100 });5const customEvent = createCustomEvent('myCustomEvent', { someData: 'someValue' });6const wrapper = createEventListenerWrapperWithPriority(event, customEvent, 1);7console.log(wrapper);Using AI Code Generation
1const { createEventListenerWrapperWithPriority } = require('playwright/lib/utils/eventListeners');2const { EventEmitter } = require('events');3const eventEmitter = new EventEmitter();4const listener = (event) => {5    console.log(`Event: ${event}`);6};7const wrapper = createEventListenerWrapperWithPriority(eventEmitter, 'foo', listener, 1);8eventEmitter.on('foo', wrapper);9eventEmitter.emit('foo', 'bar');10const { createEventListenerWrapperWithPriority } = require('puppeteer/lib/EventEmitter');11const { EventEmitter } = require('events');12const eventEmitter = new EventEmitter();13const listener = (event) => {14    console.log(`Event: ${event}`);15};16const wrapper = createEventListenerWrapperWithPriority(eventEmitter, 'foo', listener, 1);17eventEmitter.on('foo', wrapper);18eventEmitter.emit('foo', 'bar');19const { createEventListenerWrapperWithPriority } = require('puppeteer/lib/EventEmitter');20const { EventEmitter } = require('events');21const eventEmitter = new EventEmitter();22const listener = (event) => {23    console.log(`Event: ${event}`);24};25const wrapper = createEventListenerWrapperWithPriority(eventEmitter, 'foo', listener, 1);26eventEmitter.on('foo', wrapper);27eventEmitter.emit('foo', 'bar');28const { createEventListenerWrapperWithPriority } = require('puppeteer/lib/EventEmitter');29const { EventEmitter } = require('events');30const eventEmitter = new EventEmitter();31const listener = (event) => {32    console.log(`Event: ${event}`);33};34const wrapper = createEventListenerWrapperWithPriority(eventEmitter, 'foo', listener, 1);35eventEmitter.on('foo', wrapper);36eventEmitter.emit('foo', 'bar');37const { createEventListenerWrapperWithPriority } = require('pUsing AI Code Generation
1const { createEventListenerWrapperWithPriority } = require('@playwright/test/lib/server/events');2const { EventListenerWrapper } = require('@playwright/test/lib/server/events');3const { EventDispatcher } = require('@playwright/test/lib/server/events');4const { EventEmitter } = require('events');5const wrapper = createEventListenerWrapperWithPriority('click', (event) => {6    console.log('click event listener');7    console.log(event);8});9const dispatcher = new EventDispatcher(new EventEmitter());10dispatcher.add(wrapper);11const emitter = new EventEmitter();12emitter.on('click', (event) => {13    console.log('click event emitter');14    console.log(event);15});16dispatcher.dispatch('click', emitter, { x: 100, y: 200 });Using AI Code Generation
1const wrapper = createEventListenerWrapperWithPriority("click", "mouse", 100);2await page.exposeBinding("wrapper", wrapper);3await page.evaluate(async () => {4  const wrapper = window.wrapper;5  document.body.addEventListener("click", wrapper, true);6});7await page.click("button");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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