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How to use restoreAfterDispatch method in Playwright Internal

Best JavaScript code snippet using playwright-internal

invokeGuardedCallbackImpl.js

Source:invokeGuardedCallbackImpl.js

...105      const windowEventDescriptor = Object.getOwnPropertyDescriptor(106        window,107        'event',108      );109      function restoreAfterDispatch() {110        // We immediately remove the callback from event listeners so that111        // nested `invokeGuardedCallback` calls do not clash. Otherwise, a112        // nested call would trigger the fake event handlers of any call higher113        // in the stack.114        fakeNode.removeEventListener(evtType, callCallback, false);115        // We check for window.hasOwnProperty('event') to prevent the116        // window.event assignment in both IE <= 10 as they throw an error117        // "Member not found" in strict mode, and in Firefox which does not118        // support window.event.119        if (120          typeof window.event !== 'undefined' &&121          window.hasOwnProperty('event')122        ) {123          window.event = windowEvent;124        }125      }126      // Create an event handler for our fake event. We will synchronously127      // dispatch our fake event using `dispatchEvent`. Inside the handler, we128      // call the user-provided callback.129      const funcArgs = Array.prototype.slice.call(arguments, 3);130      function callCallback() {131        didCall = true;132        restoreAfterDispatch();133        func.apply(context, funcArgs);134        didError = false;135      }136      // Create a global error event handler. We use this to capture the value137      // that was thrown. It's possible that this error handler will fire more138      // than once; for example, if non-React code also calls `dispatchEvent`139      // and a handler for that event throws. We should be resilient to most of140      // those cases. Even if our error event handler fires more than once, the141      // last error event is always used. If the callback actually does error,142      // we know that the last error event is the correct one, because it's not143      // possible for anything else to have happened in between our callback144      // erroring and the code that follows the `dispatchEvent` call below. If145      // the callback doesn't error, but the error event was fired, we know to146      // ignore it because `didError` will be false, as described above.147      let error;148      // Use this to track whether the error event is ever called.149      let didSetError = false;150      let isCrossOriginError = false;151      function handleWindowError(event) {152        error = event.error;153        didSetError = true;154        if (error === null && event.colno === 0 && event.lineno === 0) {155          isCrossOriginError = true;156        }157        if (event.defaultPrevented) {158          // Some other error handler has prevented default.159          // Browsers silence the error report if this happens.160          // We'll remember this to later decide whether to log it or not.161          if (error != null && typeof error === 'object') {162            try {163              error._suppressLogging = true;164            } catch (inner) {165              // Ignore.166            }167          }168        }169      }170      // Create a fake event type.171      const evtType = `react-${name ? name : 'invokeguardedcallback'}`;172      // Attach our event handlers173      window.addEventListener('error', handleWindowError);174      fakeNode.addEventListener(evtType, callCallback, false);175      // Synchronously dispatch our fake event. If the user-provided function176      // errors, it will trigger our global error handler.177      evt.initEvent(evtType, false, false);178      fakeNode.dispatchEvent(evt);179      if (windowEventDescriptor) {180        Object.defineProperty(window, 'event', windowEventDescriptor);181      }182      if (didCall && didError) {183        if (!didSetError) {184          // The callback errored, but the error event never fired.185          error = new Error(186            'An error was thrown inside one of your components, but React ' +187              "doesn't know what it was. This is likely due to browser " +188              'flakiness. React does its best to preserve the "Pause on ' +189              'exceptions" behavior of the DevTools, which requires some ' +190              "DEV-mode only tricks. It's possible that these don't work in " +191              'your browser. Try triggering the error in production mode, ' +192              'or switching to a modern browser. If you suspect that this is ' +193              'actually an issue with React, please file an issue.',194          );195        } else if (isCrossOriginError) {196          error = new Error(197            "A cross-origin error was thrown. React doesn't have access to " +198              'the actual error object in development. ' +199              'See https://reactjs.org/link/crossorigin-error for more information.',200          );201        }202        this.onError(error);203      }204      // Remove our event listeners205      window.removeEventListener('error', handleWindowError);206      if (!didCall) {207        // Something went really wrong, and our event was not dispatched.208        // https://github.com/facebook/react/issues/16734209        // https://github.com/facebook/react/issues/16585210        // Fall back to the production implementation.211        restoreAfterDispatch();212        return invokeGuardedCallbackProd.apply(this, arguments);213      }214    };215  }216}...

Using AI Code Generation

1const { Playwright } = require('playwright');2const { Page } = require('playwright/lib/server/page');3const { Frame } = require('playwright/lib/server/frame');4const { ElementHandle } = require('playwright/lib/server/elementHandler');5const { JSHandle } = require('playwright/lib/server/jsHandle');6const restoreAfterDispatch = (obj, methodName) => {7    const originalMethod = obj[methodName];8    obj[methodName] = function (...args) {9        const result = originalMethod.apply(this, args);10        obj[methodName] = originalMethod;11        return result;12    };13};14const restoreAfterDispatches = (obj, methodNames) => {15    for (const methodName of methodNames) {16        restoreAfterDispatch(obj, methodName);17    }18};19const page = await context.newPage();20await page.setContent('<button>Click me</button>');21const button = await page.$('button');22await button.click();23await page.setContent('<button>Click me</button>');24await button.click();25restoreAfterDispatches(Page.prototype, ['dispatchEvent', 'dispatchEventOnSelector', 'dispatchEventOnElementHandle']);26restoreAfterDispatches(Frame.prototype, ['dispatchEvent', 'dispatchEventOnSelector', 'dispatchEventOnElementHandle']);27restoreAfterDispatches(ElementHandle.prototype, ['dispatchEvent']);28restoreAfterDispatches(JSHandle.prototype, ['evaluateHandle', 'evaluate', 'evaluateExpression']);29restoreAfterDispatches(Playwright.prototype, ['dispatchEvent']);30await button.click();31[Apache 2.0](./LICENSE)

Using AI Code Generation

1const { restoreAfterDispatch } = require('playwright/lib/server/router');2const { BrowserContext } = require('playwright/lib/server/browserContext');3const { Page } = require('playwright/lib/server/page');4restoreAfterDispatch(BrowserContext, 'close', async function (context, route, request) {5  await route.continue();6  console.log('Browser Context Closed');7});8restoreAfterDispatch(Page, 'close', async function (page, route, request) {9  await route.continue();10  console.log('Page Closed');11});12const { restoreAfterDispatch } = require('playwright/lib/server/router');13const { BrowserContext } = require('playwright/lib/server/browserContext');14const { Page } = require('playwright/lib/server/page');15restoreAfterDispatch(BrowserContext, 'close', async function (context, route, request) {16  await route.continue();17  console.log('Browser Context Closed');18});19restoreAfterDispatch(Page, 'close', async function (page, route, request) {20  await route.continue();21  console.log('Page Closed');22});23(async () => {24  await browser.close();25})();26const { restoreAfterDispatch } = require('playwright/lib/server/router');27const { BrowserContext } = require('playwright/lib/server/browserContext');28const { Page } = require('playwright/lib/server/page');29restoreAfterDispatch(BrowserContext, 'close', async function (context, route, request) {30  await route.continue();31  console.log('Browser Context Closed');32});33restoreAfterDispatch(Page, 'close', async function (page, route, request) {34  await route.continue();35  console.log('Page Closed');36});37(async () => {38  await browser.close();39})();40- [Playwright](

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  await page.evaluate(() => {6    window['foo'] = 'bar';7  });8  await page.restoreAfterDispatch(() => {9    window['foo'] = 'baz';10  });11  const fooValue = await page.evaluate(() => window['foo']);12  console.log(fooValue);13  await browser.close();14})();

Using AI Code Generation

1await page.restoreAfterDispatch();2#### page.restoreAfterDispatch()3await page.restoreAfterDispatch();4#### page.restoreAfterDispatch()5await page.restoreAfterDispatch();6#### page.restoreAfterDispatch()7await page.restoreAfterDispatch();8#### page.restoreAfterDispatch()9await page.restoreAfterDispatch();10#### page.restoreAfterDispatch()11await page.restoreAfterDispatch();12#### page.restoreAfterDispatch()13await page.restoreAfterDispatch();14#### page.restoreAfterDispatch()

Using AI Code Generation

1const { context, page } = require('@playwright/test');2const { restoreAfterDispatch } = require('playwright/lib/internal/frames');3const selector = 'input[type="text"]';4const text = 'some text';5(async () => {6  await page.fill(selector, text);7  await restoreAfterDispatch(page, async () => {8    await page.fill(selector, '');9  });10})();

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