Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use createWorkInProgressOffscreenFiber method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberBeginWork.old.js

Source:ReactFiberBeginWork.old.js

...1078    primaryChildFragment.sibling = fallbackChildFragment;1079    workInProgress.child = primaryChildFragment;1080    return fallbackChildFragment;1081  }1082  function createWorkInProgressOffscreenFiber(current, offscreenProps) {1083    // The props argument to `createWorkInProgress` is `any` typed, so we use this1084    // wrapper function to constrain it.1085    return createWorkInProgress(current, offscreenProps);1086  }1087  function updateSuspensePrimaryChildren(current, workInProgress, primaryChildren, renderLanes) {1088    var currentPrimaryChildFragment = current.child;1089    var currentFallbackChildFragment = currentPrimaryChildFragment.sibling;1090    var primaryChildFragment = createWorkInProgressOffscreenFiber(currentPrimaryChildFragment, {1091      mode: 'visible',1092      children: primaryChildren1093    });1094    if ((workInProgress.mode & BlockingMode) === NoMode) {1095      primaryChildFragment.lanes = renderLanes;1096    }1097    primaryChildFragment.return = workInProgress;1098    primaryChildFragment.sibling = null;1099    if (currentFallbackChildFragment !== null) {1100      // Delete the fallback child fragment1101      currentFallbackChildFragment.nextEffect = null;1102      currentFallbackChildFragment.flags = Deletion;1103      workInProgress.firstEffect = workInProgress.lastEffect = currentFallbackChildFragment;1104    }1105    workInProgress.child = primaryChildFragment;1106    return primaryChildFragment;1107  }1108  function updateSuspenseFallbackChildren(current, workInProgress, primaryChildren, fallbackChildren, renderLanes) {1109    var mode = workInProgress.mode;1110    var currentPrimaryChildFragment = current.child;1111    var currentFallbackChildFragment = currentPrimaryChildFragment.sibling;1112    var primaryChildProps = {1113      mode: 'hidden',1114      children: primaryChildren1115    };1116    var primaryChildFragment;1117    if ( // In legacy mode, we commit the primary tree as if it successfully1118    // completed, even though it's in an inconsistent state.1119    (mode & BlockingMode) === NoMode && // Make sure we're on the second pass, i.e. the primary child fragment was1120    // already cloned. In legacy mode, the only case where this isn't true is1121    // when DevTools forces us to display a fallback; we skip the first render1122    // pass entirely and go straight to rendering the fallback. (In Concurrent1123    // Mode, SuspenseList can also trigger this scenario, but this is a legacy-1124    // only codepath.)1125    workInProgress.child !== currentPrimaryChildFragment) {1126      var progressedPrimaryFragment = workInProgress.child;1127      primaryChildFragment = progressedPrimaryFragment;1128      primaryChildFragment.childLanes = NoLanes;1129      primaryChildFragment.pendingProps = primaryChildProps;1130      if ( workInProgress.mode & ProfileMode) {1131        // Reset the durations from the first pass so they aren't included in the1132        // final amounts. This seems counterintuitive, since we're intentionally1133        // not measuring part of the render phase, but this makes it match what we1134        // do in Concurrent Mode.1135        primaryChildFragment.actualDuration = 0;1136        primaryChildFragment.actualStartTime = -1;1137        primaryChildFragment.selfBaseDuration = currentPrimaryChildFragment.selfBaseDuration;1138        primaryChildFragment.treeBaseDuration = currentPrimaryChildFragment.treeBaseDuration;1139      } // The fallback fiber was added as a deletion effect during the first pass.1140      // However, since we're going to remain on the fallback, we no longer want1141      // to delete it. So we need to remove it from the list. Deletions are stored1142      // on the same list as effects. We want to keep the effects from the primary1143      // tree. So we copy the primary child fragment's effect list, which does not1144      // include the fallback deletion effect.1145      var progressedLastEffect = primaryChildFragment.lastEffect;1146      if (progressedLastEffect !== null) {1147        workInProgress.firstEffect = primaryChildFragment.firstEffect;1148        workInProgress.lastEffect = progressedLastEffect;1149        progressedLastEffect.nextEffect = null;1150      } else {1151        // TODO: Reset this somewhere else? Lol legacy mode is so weird.1152        workInProgress.firstEffect = workInProgress.lastEffect = null;1153      }1154    } else {1155      primaryChildFragment = createWorkInProgressOffscreenFiber(currentPrimaryChildFragment, primaryChildProps);1156    }1157    var fallbackChildFragment;1158    if (currentFallbackChildFragment !== null) {1159      fallbackChildFragment = createWorkInProgress(currentFallbackChildFragment, fallbackChildren);1160    } else {1161      fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null); // Needs a placement effect because the parent (the Suspense boundary) already1162      // mounted but this is a new fiber.1163      fallbackChildFragment.flags |= Placement;1164    }1165    fallbackChildFragment.return = workInProgress;1166    primaryChildFragment.return = workInProgress;1167    primaryChildFragment.sibling = fallbackChildFragment;1168    workInProgress.child = primaryChildFragment;1169    return fallbackChildFragment;...

ReactFiberBeginWork.new.js

Source:ReactFiberBeginWork.new.js

...1480  primaryChildFragment.sibling = fallbackChildFragment;1481  workInProgress.child = primaryChildFragment;1482  return fallbackChildFragment;1483}1484function createWorkInProgressOffscreenFiber(1485  current: Fiber,1486  offscreenProps: OffscreenProps,1487) {1488  1489  console.log('createWorkInProgressOffscreenFiber')1490  if (!__LOG_NAMES__.length || __LOG_NAMES__.includes('createWorkInProgressOffscreenFiber')) debugger1491  // The props argument to `createWorkInProgress` is `any` typed, so we use this1492  // wrapper function to constrain it.1493  return createWorkInProgress(current, offscreenProps);1494}1495function updateSuspensePrimaryChildren(1496  current,1497  workInProgress,1498  primaryChildren,1499  renderLanes,1500) {1501  1502  console.log('updateSuspensePrimaryChildren')1503  if (!__LOG_NAMES__.length || __LOG_NAMES__.includes('updateSuspensePrimaryChildren')) debugger1504  const currentPrimaryChildFragment: Fiber = (current.child: any);1505  const currentFallbackChildFragment: Fiber | null =1506    currentPrimaryChildFragment.sibling;1507  const primaryChildFragment = createWorkInProgressOffscreenFiber(1508    currentPrimaryChildFragment,1509    {1510      mode: 'visible',1511      children: primaryChildren,1512    },1513  );1514  if ((workInProgress.mode & BlockingMode) === NoMode) {1515    primaryChildFragment.lanes = renderLanes;1516  }1517  primaryChildFragment.return = workInProgress;1518  primaryChildFragment.sibling = null;1519  if (currentFallbackChildFragment !== null) {1520    // Delete the fallback child fragment1521    const deletions = workInProgress.deletions;1522    if (deletions === null) {1523      workInProgress.deletions = [currentFallbackChildFragment];1524      // TODO (effects) Rename this to better reflect its new usage (e.g. ChildDeletions)1525      workInProgress.flags |= Deletion;1526    } else {1527      deletions.push(currentFallbackChildFragment);1528    }1529  }1530  workInProgress.child = primaryChildFragment;1531  return primaryChildFragment;1532}1533function updateSuspenseFallbackChildren(1534  current,1535  workInProgress,1536  primaryChildren,1537  fallbackChildren,1538  renderLanes,1539) {1540  1541  console.log('updateSuspenseFallbackChildren')1542  if (!__LOG_NAMES__.length || __LOG_NAMES__.includes('updateSuspenseFallbackChildren')) debugger1543  const mode = workInProgress.mode;1544  const currentPrimaryChildFragment: Fiber = (current.child: any);1545  const currentFallbackChildFragment: Fiber | null =1546    currentPrimaryChildFragment.sibling;1547  const primaryChildProps: OffscreenProps = {1548    mode: 'hidden',1549    children: primaryChildren,1550  };1551  let primaryChildFragment;1552  if (1553    // In legacy mode, we commit the primary tree as if it successfully1554    // completed, even though it's in an inconsistent state.1555    (mode & BlockingMode) === NoMode &&1556    // Make sure we're on the second pass, i.e. the primary child fragment was1557    // already cloned. In legacy mode, the only case where this isn't true is1558    // when DevTools forces us to display a fallback; we skip the first render1559    // pass entirely and go straight to rendering the fallback. (In Concurrent1560    // Mode, SuspenseList can also trigger this scenario, but this is a legacy-1561    // only codepath.)1562    workInProgress.child !== currentPrimaryChildFragment1563  ) {1564    const progressedPrimaryFragment: Fiber = (workInProgress.child: any);1565    primaryChildFragment = progressedPrimaryFragment;1566    primaryChildFragment.childLanes = NoLanes;1567    primaryChildFragment.pendingProps = primaryChildProps;1568    if (enableProfilerTimer && workInProgress.mode & ProfileMode) {1569      // Reset the durations from the first pass so they aren't included in the1570      // final amounts. This seems counterintuitive, since we're intentionally1571      // not measuring part of the render phase, but this makes it match what we1572      // do in Concurrent Mode.1573      primaryChildFragment.actualDuration = 0;1574      primaryChildFragment.actualStartTime = -1;1575      primaryChildFragment.selfBaseDuration =1576        currentPrimaryChildFragment.selfBaseDuration;1577      primaryChildFragment.treeBaseDuration =1578        currentPrimaryChildFragment.treeBaseDuration;1579    }1580    // The fallback fiber was added as a deletion effect during the first pass.1581    // However, since we're going to remain on the fallback, we no longer want1582    // to delete it.1583    workInProgress.deletions = null;1584  } else {1585    primaryChildFragment = createWorkInProgressOffscreenFiber(1586      currentPrimaryChildFragment,1587      primaryChildProps,1588    );1589    // Since we're reusing a current tree, we need to reuse the flags, too.1590    // (We don't do this in legacy mode, because in legacy mode we don't re-use1591    // the current tree; see previous branch.)1592    primaryChildFragment.subtreeFlags =1593      currentPrimaryChildFragment.subtreeFlags & StaticMask;1594  }1595  let fallbackChildFragment;1596  if (currentFallbackChildFragment !== null) {1597    fallbackChildFragment = createWorkInProgress(1598      currentFallbackChildFragment,1599      fallbackChildren,...

FiberBeginWork.js

Source:FiberBeginWork.js

...394  renderLanes395){396  const currentPrimaryChildFragment = current.child;397  const currentFallbackChildFragment = currentPrimaryChildFragment.sibling;398  // createWorkInProgressOffscreenFiber()399  const primaryChildFragment = createWorkInProgress(400    currentPrimaryChildFragment,401    {402      mode: 'visible',403      children: primaryChildren,404    }405  )406  primaryChildFragment.return = workInProgress;407  primaryChildFragment.sibling = null;408  if (currentFallbackChildFragment !== null){409    // Delete the fallback child fragment410    const deletions = workInProgress.deletions;411    if (deletions === null){412      workInProgress.deletions = [currentFallbackChildFragment];...

Using AI Code Generation

1const { createWorkInProgressOffscreenFiber } = require('playwright/lib/server/playwright');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const fiber = await createWorkInProgressOffscreenFiber(page);8  await fiber.screenshot({ path: 'example.png' });9  await browser.close();10})();

Using AI Code Generation

1const { createWorkInProgressOffscreenFiber } = require('playwright/lib/server/dom.js');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const result = await offscreenFiber.evaluate(() => {8    return {9    };10  });11  console.log(result);12  await browser.close();13})();

Using AI Code Generation

1const { createWorkInProgressOffscreenFiber } = require('./node_modules/playwright/lib/internal');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const workInProgress = createWorkInProgressOffscreenFiber(page);8  await workInProgress.evaluate(() => {9    console.log('hello');10  });11  await browser.close();12})();13module.exports.createWorkInProgressOffscreenFiber = (page) => {14  return page._delegate._mainFrame._mainWorld._fiber;15};16class Fiber {17  constructor() {18    this._page = null;19    this._executionContext = null;20    this._contextId = null;21    this._frameId = null;22    this._pageId = null;23  }24  async evaluate(page, expression, arg) {25    this._page = page;26    this._executionContext = await this._page._mainContext();27    this._contextId = this._executionContext._contextId;28    this._frameId = this._executionContext.frame._id;29    this._pageId = this._executionContext.frame._page._id;30    return await this._executionContext.evaluateHandle(expression, arg);31  }32}33module.exports.Fiber = Fiber;34class ExecutionContext {35  async evaluateHandle(expression, arg) {36    if (arg !== undefined)37      expression = `(${expression})(...)`;38    const { exceptionDetails, result: remoteObject } = await this._client.send('Runtime.evaluate', {39      arg: serializeArgument(arg),40    }).catch(rewriteError);41    if (exceptionDetails)42      throw new Error('Evaluation failed: ' + helper.getExceptionMessage(exceptionDetails));43    return this._createHandle(remoteObject);44  }45}

Using AI Code Generation

1const { createWorkInProgressOffscreenFiber } = require('playwright/lib/server/fiber');2const { Page } = require('playwright/lib/server/page');3const { helper } = require('playwright/lib/helper');4const { assert } = require('playwright/lib/helper');5const { debugError } = require('playwright/lib/helper');6const { debug } = require('playwright/lib/helper');7class CustomPage extends Page {8  async createOffscreenPage() {9    const offscreenPage = new CustomPage(this._browserContext, this._delegate, this._timeoutSettings, this._logger);10    offscreenPage._pagePromise = this._pagePromise.then(async page => {11      const { frameTree } = await this._delegate.createOffscreenBrowserContext();12      offscreenPage._initialize(page._delegate, frameTree);13      return offscreenPage;14    });15    return offscreenPage;16  }17}18module.exports = { CustomPage };19const { CustomPage } = require('./test.js');20const { Playwright } = require('playwright/lib/server/playwright');21const { BrowserType } = require('playwright/lib/server/browserType');22const { Browser } = require('playwright/lib/server/browser');23class CustomPlaywright extends Playwright {24  constructor() {25    super();26    this._browserTypes = new Map();27    for (const name of ['chromium', 'firefox', 'webkit']) {28      const browserType = new CustomBrowserType(name, this._logger, this._timeoutSettings);29      this._browserTypes.set(name, browserType);30    }31  }32}33class CustomBrowserType extends BrowserType {34  async launchServer(options) {35    const { transport, gracefullyClose } = await super.launchServer(options);36    return {37      gracefullyClose: () => gracefullyClose().then(async () => {38        await transport.send('closeBrowser');39      })40    };41  }42}43class CustomBrowser extends Browser {44  async _createPageInContext(contextId, options) {45    const { page, isInitialized } = await super._createPageInContext(contextId, options);46    if (isInitialized)47      return { page, isInitialized };48    return {49      page: new CustomPage(this._browserContexts.get(contextId), page._delegate, this._timeoutSettings, this._logger),50    };51  }52}53module.exports = { CustomPlay

Using AI Code Generation

1import { createWorkInProgressOffscreenFiber } from 'playwright';2await offscreenFiber.evaluate(() => {3});4await offscreenFiber.dispose();5import { createOffscreenFiber } from 'playwright';6await offscreenFiber.evaluate(() => {7});8await offscreenFiber.dispose();9[Apache 2.0](LICENSE)

Using AI Code Generation

1const { PlaywrightInternal } = require('playwright/lib/server/playwright');2const { createWorkInProgressOffscreenFiber } = PlaywrightInternal.createWorkInProgressOffscreenFiber();3const { PlaywrightInternal } = require('playwright/lib/server/playwright');4const { createWorkInProgressOffscreenFiber } = PlaywrightInternal.createWorkInProgressOffscreenFiber();5const { PlaywrightInternal } = require('playwright/lib/server/playwright');6const { createWorkInProgressOffscreenFiber } = PlaywrightInternal.createWorkInProgressOffscreenFiber();7const { PlaywrightInternal } = require('playwright/lib/server/playwright');8const { createWorkInProgressOffscreenFiber } = PlaywrightInternal.createWorkInProgressOffscreenFiber();9const { PlaywrightInternal } = require('playwright/lib/server/playwright');10const { createWorkInProgressOffscreenFiber } = PlaywrightInternal.createWorkInProgressOffscreenFiber();11const { PlaywrightInternal } = require('playwright/lib/server/playwright');12const { createWorkInProgressOffscreenFiber } = PlaywrightInternal.createWorkInProgressOffscreenFiber();13const { PlaywrightInternal } = require('playwright/lib/server/playwright');14const { createWorkInProgressOffscreenFiber } = PlaywrightInternal.createWorkInProgressOffscreenFiber();15const { PlaywrightInternal } = require('playwright/lib/server/playwright');16const { createWorkInProgressOffscreenFiber } = PlaywrightInternal.createWorkInProgressOffscreenFiber();17const { PlaywrightInternal } = require('playwright/lib/server/playwright');18const { createWorkInProgressOffscreenFiber } = PlaywrightInternal.createWorkInProgressOffscreenFiber();19const { Play

Using AI Code Generation

1const { createWorkInProgressOffscreenFiber } = require('playwright/lib/server/domFiber');2const fiber = createWorkInProgressOffscreenFiber();3const { createPlaywrightInternalApi } = require('playwright/lib/server/playwright');4const playwrightInternalApi = createPlaywrightInternalApi();5const { createPlaywright } = require('playwright/lib/server/playwright');6const playwright = createPlaywright();7const { createPlaywrightServer } = require('playwright/lib/server/playwrightServer');8const playwrightServer = createPlaywrightServer();9const { createPlaywrightServerLauncher } = require('playwright/lib/server/playwrightServerLauncher');10const playwrightServerLauncher = createPlaywrightServerLauncher();11const { createPlaywrightServerLauncherServer } = require('playwright/lib/server/playwrightServerLauncherServer');12const playwrightServerLauncherServer = createPlaywrightServerLauncherServer();13const { createPlaywrightServerLauncherSocket } = require('playwright/lib/server/playwrightServerLauncherSocket');14const playwrightServerLauncherSocket = createPlaywrightServerLauncherSocket();15const { createPlaywrightServerLauncherTransport } = require('playwright/lib/server/playwrightServerLauncherTransport');16const playwrightServerLauncherTransport = createPlaywrightServerLauncherTransport();17const { createPlaywrightServerServer } = require('playwright/lib/server/playwrightServerServer');18const playwrightServerServer = createPlaywrightServerServer();19const { createPlaywrightServerSocket } = require('playwright/lib/server/playwrightServerSocket');20const playwrightServerSocket = createPlaywrightServerSocket();21const { createPlaywrightServerTransport } = require('playwright/lib/server/playwrightServerTransport');

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.