KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta Join TestMu Conference

How to use findHostInstanceWithNoPortals method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactDOMRoot.js

Source:ReactDOMRoot.js

...65      );66    }67    const container = root.containerInfo;68    if (container.nodeType !== COMMENT_NODE) {69      const hostInstance = findHostInstanceWithNoPortals(root.current);70      if (hostInstance) {71        if (hostInstance.parentNode !== container) {72          console.error(73            'render(...): It looks like the React-rendered content of the ' +74              'root container was removed without using React. This is not ' +75              'supported and will cause errors. Instead, call ' +76              "root.unmount() to empty a root's container.",77          );78        }79      }80    }81  }82  updateContainer(children, root, null, null);83};...

ReactFiberReconciler.js

Source:ReactFiberReconciler.js

1/**2 * Copyright (c) Facebook, Inc. and its affiliates.3 *4 * This source code is licensed under the MIT license found in the5 * LICENSE file in the root directory of this source tree.6 *7 * @flow8 */9import {enableNewReconciler} from 'shared/ReactFeatureFlags';10// The entry file imports either the old or new version of the reconciler.11// During build and testing, this indirection is always shimmed with the actual12// modules, otherwise both reconcilers would be initialized. So this is really13// only here for Flow purposes.14import {15  createContainer as createContainer_old,16  updateContainer as updateContainer_old,17  batchedEventUpdates as batchedEventUpdates_old,18  batchedUpdates as batchedUpdates_old,19  unbatchedUpdates as unbatchedUpdates_old,20  deferredUpdates as deferredUpdates_old,21  syncUpdates as syncUpdates_old,22  discreteUpdates as discreteUpdates_old,23  flushDiscreteUpdates as flushDiscreteUpdates_old,24  flushControlled as flushControlled_old,25  flushSync as flushSync_old,26  flushPassiveEffects as flushPassiveEffects_old,27  IsThisRendererActing as IsThisRendererActing_old,28  getPublicRootInstance as getPublicRootInstance_old,29  attemptSynchronousHydration as attemptSynchronousHydration_old,30  attemptUserBlockingHydration as attemptUserBlockingHydration_old,31  attemptContinuousHydration as attemptContinuousHydration_old,32  attemptHydrationAtCurrentPriority as attemptHydrationAtCurrentPriority_old,33  findHostInstance as findHostInstance_old,34  findHostInstanceWithWarning as findHostInstanceWithWarning_old,35  findHostInstanceWithNoPortals as findHostInstanceWithNoPortals_old,36  shouldSuspend as shouldSuspend_old,37  injectIntoDevTools as injectIntoDevTools_old,38  act as act_old,39  createPortal as createPortal_old,40} from './ReactFiberReconciler.old';41// TODO: Update these to point to the fork.42import {43  createContainer as createContainer_new,44  updateContainer as updateContainer_new,45  batchedEventUpdates as batchedEventUpdates_new,46  batchedUpdates as batchedUpdates_new,47  unbatchedUpdates as unbatchedUpdates_new,48  deferredUpdates as deferredUpdates_new,49  syncUpdates as syncUpdates_new,50  discreteUpdates as discreteUpdates_new,51  flushDiscreteUpdates as flushDiscreteUpdates_new,52  flushControlled as flushControlled_new,53  flushSync as flushSync_new,54  flushPassiveEffects as flushPassiveEffects_new,55  IsThisRendererActing as IsThisRendererActing_new,56  getPublicRootInstance as getPublicRootInstance_new,57  attemptSynchronousHydration as attemptSynchronousHydration_new,58  attemptUserBlockingHydration as attemptUserBlockingHydration_new,59  attemptContinuousHydration as attemptContinuousHydration_new,60  attemptHydrationAtCurrentPriority as attemptHydrationAtCurrentPriority_new,61  findHostInstance as findHostInstance_new,62  findHostInstanceWithWarning as findHostInstanceWithWarning_new,63  findHostInstanceWithNoPortals as findHostInstanceWithNoPortals_new,64  shouldSuspend as shouldSuspend_new,65  injectIntoDevTools as injectIntoDevTools_new,66  act as act_new,67  createPortal as createPortal_new,68} from './ReactFiberReconciler.old';69export const createContainer = enableNewReconciler70  ? createContainer_new71  : createContainer_old;72export const updateContainer = enableNewReconciler73  ? updateContainer_new74  : updateContainer_old;75export const batchedEventUpdates = enableNewReconciler76  ? batchedEventUpdates_new77  : batchedEventUpdates_old;78export const batchedUpdates = enableNewReconciler79  ? batchedUpdates_new80  : batchedUpdates_old;81export const unbatchedUpdates = enableNewReconciler82  ? unbatchedUpdates_new83  : unbatchedUpdates_old;84export const deferredUpdates = enableNewReconciler85  ? deferredUpdates_new86  : deferredUpdates_old;87export const syncUpdates = enableNewReconciler88  ? syncUpdates_new89  : syncUpdates_old;90export const discreteUpdates = enableNewReconciler91  ? discreteUpdates_new92  : discreteUpdates_old;93export const flushDiscreteUpdates = enableNewReconciler94  ? flushDiscreteUpdates_new95  : flushDiscreteUpdates_old;96export const flushControlled = enableNewReconciler97  ? flushControlled_new98  : flushControlled_old;99export const flushSync = enableNewReconciler ? flushSync_new : flushSync_old;100export const flushPassiveEffects = enableNewReconciler101  ? flushPassiveEffects_new102  : flushPassiveEffects_old;103export const IsThisRendererActing = enableNewReconciler104  ? IsThisRendererActing_new105  : IsThisRendererActing_old;106export const getPublicRootInstance = enableNewReconciler107  ? getPublicRootInstance_new108  : getPublicRootInstance_old;109export const attemptSynchronousHydration = enableNewReconciler110  ? attemptSynchronousHydration_new111  : attemptSynchronousHydration_old;112export const attemptUserBlockingHydration = enableNewReconciler113  ? attemptUserBlockingHydration_new114  : attemptUserBlockingHydration_old;115export const attemptContinuousHydration = enableNewReconciler116  ? attemptContinuousHydration_new117  : attemptContinuousHydration_old;118export const attemptHydrationAtCurrentPriority = enableNewReconciler119  ? attemptHydrationAtCurrentPriority_new120  : attemptHydrationAtCurrentPriority_old;121export const findHostInstance = enableNewReconciler122  ? findHostInstance_new123  : findHostInstance_old;124export const findHostInstanceWithWarning = enableNewReconciler125  ? findHostInstanceWithWarning_new126  : findHostInstanceWithWarning_old;127export const findHostInstanceWithNoPortals = enableNewReconciler128  ? findHostInstanceWithNoPortals_new129  : findHostInstanceWithNoPortals_old;130export const shouldSuspend = enableNewReconciler131  ? shouldSuspend_new132  : shouldSuspend_old;133export const injectIntoDevTools = enableNewReconciler134  ? injectIntoDevTools_new135  : injectIntoDevTools_old;136export const act = enableNewReconciler ? act_new : act_old;137export const createPortal = enableNewReconciler138  ? createPortal_new...

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const page = await browser.newPage();5  const elementHandle = await page.$('text=Get started');6  const hostInstance = await elementHandle._context.findHostInstanceWithNoPortals(elementHandle);7  console.log(hostInstance);8  await browser.close();9})();10Your name to display (optional):11Your name to display (optional):12const { chromium } = require('playwright');13(async () => {14  const browser = await chromium.launch({ headless: false });15  const page = await browser.newPage();16  await page.waitForLoadState();17  const elementHandle = await page.$('text=Get started');18  const hostInstance = await elementHandle._context.findHostInstanceWithNoPortals(elementHandle);19  console.log(hostInstance);20  await browser.close();21})();22Your name to display (optional):

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const elementHandle = await page.$('text=Get started');6  const host = await page.findHostInstanceWithNoPortals(elementHandle);7  console.log(host);8  await browser.close();9})();10ElementHandle {11  _context: BrowserContext {12    _browser: Browser {13      _connection: Connection {14        _callbacksPending: Set(0) {},15        _callbacksPending: Set(0) {},16        _callbacksPending: Set(0) {},17        _callbacksPending: Set(0) {},18        _callbacksPending: Set(0) {},19        _callbacksPending: Set(0) {},20        _callbacksPending: Set(0) {},21        _callbacksPending: Set(0) {},22        _callbacksPending: Set(0) {},23        _callbacksPending: Set(0

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  const browser = await playwright.chromium.launch();4  const page = await browser.newPage();5  await page.click('text=Get started');6  const elementHandle = await page.$('text=Get started');7  const host = await elementHandle._internalApi.findHostInstance();8  console.log(host);9  await browser.close();10})();11{ type: 'node',12  attributes: { 'data-testid': 'get-started-btn' },13  children: [ { type: 'text', name: 'Get started', value: 'Get started' } ] }

Using AI Code Generation

1const { findHostInstanceWithNoPortals } = require('playwright/lib/server/dom');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch({ headless: false });5  const context = await browser.newContext();6  const page = await context.newPage();7  const element = await page.$('text=Page');8  const host = findHostInstanceWithNoPortals(element);9  console.log(host);10  await browser.close();11})();12{13  _page: Page {14  },15  _parentFrame: Frame {16  },17  _context: ExecutionContext {

Using AI Code Generation

1const { findHostInstanceWithNoPortals } = require('playwright/lib/server/supplements/recorder/recorderSupplement');2const { chromium } = require('playwright');3const path = require('path');4(async () => {5  const browser = await chromium.launch();6  const context = await browser.newContext();7  const page = await context.newPage();8  const element = await page.$('input');9  const hostInstance = findHostInstanceWithNoPortals(element);10  console.log(hostInstance);11  await browser.close();12})();13{ _guid: '0x3F3',14   { description: 'input#lst-ib.gsfi',15     objectId: '{"injectedScriptId":2,"id":1}',16      { type: 'node',17        childNodeCount: 0 } } }18const { findHostInstanceWithNoPortals } = require('playwright-chromium/lib/server/supplements/recorder/recorderSupplement');19const { chromium } = require('playwright');20(async () => {21  const browser = await chromium.launch();22  const context = await browser.newContext();23  const page = await context.newPage();24  const element = await page.$('input');25  console.log(element);26  await browser.close();27})();28ElementHandle {

Using AI Code Generation

1const { findHostInstanceWithNoPortals } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');2const hostInstance = findHostInstanceWithNoPortals(document.body);3console.log(hostInstance);4const { findHostInstanceWithNoPortals } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');5const hostInstance = findHostInstanceWithNoPortals(document.body);6console.log(hostInstance);

Using AI Code Generation

1const { findHostInstanceWithNoPortals } = require('playwright/lib/server/dom.js');2const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));3const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));4const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));5const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));6const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));7const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));8const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));9const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));10const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));11const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));12const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));13const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));14const host = findHostInstanceWithNoPortals(document.querySelector('#elementId'));

Using AI Code Generation

1const { findHostInstanceWithNoPortals } = require('playwright/lib/server/frames');2const frame = page.frames()[0];3const element = await findHostInstanceWithNoPortals(frame, selector);4const { findHostInstanceWithNoPortals } = require('playwright/lib/server/frames');5const frame = page.frames()[0];6const element = await findHostInstanceWithNoPortals(frame, selector);7const { findHostInstanceWithNoPortals } = require('playwright/lib/server/frames');8const frame = page.frames()[0];9const element = await findHostInstanceWithNoPortals(frame, selector);10const { findHostInstanceWithNoPortals } = require('playwright/lib/server/frames');11const frame = page.frames()[0];12const element = await findHostInstanceWithNoPortals(frame, selector);13const { findHostInstanceWithNoPortals } = require('playwright/lib/server/frames');14const frame = page.frames()[0];15const element = await findHostInstanceWithNoPortals(frame, selector);16const { findHostInstanceWithNoPortals } = require('playwright/lib/server/frames');17const frame = page.frames()[0];18const element = await findHostInstanceWithNoPortals(frame, selector);19const { findHostInstanceWithNoPortals } = require('playwright/lib/server/frames');20const frame = page.frames()[0];21const element = await findHostInstanceWithNoPortals(frame, selector);22const { findHostInstanceWithNoPortals } = require('playwright/lib/server/frames');23const frame = page.frames()[0];24const element = await findHostInstanceWithNoPortals(frame, selector);25const { findHostInstanceWithNoPortals

Playwright tutorial

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.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.