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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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