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How to use finishConcurrentRender method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberWorkLoop.new.js

Source:ReactFiberWorkLoop.new.js

...787    // or, if something suspended, wait to commit it after a timeout.788    const finishedWork: Fiber = (root.current.alternate: any);789    root.finishedWork = finishedWork;790    root.finishedLanes = lanes;791    finishConcurrentRender(root, exitStatus, lanes);792  }793  ensureRootIsScheduled(root, now());794  if (root.callbackNode === originalCallbackNode) {795    // The task node scheduled for this root is the same one that's796    // currently executed. Need to return a continuation.797    return performConcurrentWorkOnRoot.bind(null, root);798  }799  return null;800}801function finishConcurrentRender(root, exitStatus, lanes) {802  switch (exitStatus) {803    case RootIncomplete:804    case RootFatalErrored: {805      invariant(false, 'Root did not complete. This is a bug in React.');806    }807    // Flow knows about invariant, so it complains if I add a break808    // statement, but eslint doesn't know about invariant, so it complains809    // if I do. eslint-disable-next-line no-fallthrough810    case RootErrored: {811      // We should have already attempted to retry this tree. If we reached812      // this point, it errored again. Commit it.813      commitRoot(root);814      break;815    }816    case RootSuspended: {817      markRootSuspended(root, lanes);818      // We have an acceptable loading state. We need to figure out if we819      // should immediately commit it or wait a bit.820      if (821        includesOnlyRetries(lanes) &&822        // do not delay if we're inside an act() scope823        !shouldForceFlushFallbacksInDEV()824      ) {825        // This render only included retries, no updates. Throttle committing826        // retries so that we don't show too many loading states too quickly.827        const msUntilTimeout =828          globalMostRecentFallbackTime + FALLBACK_THROTTLE_MS - now();829        // Don't bother with a very short suspense time.830        if (msUntilTimeout > 10) {831          const nextLanes = getNextLanes(root, NoLanes);832          if (nextLanes !== NoLanes) {833            // There's additional work on this root.834            break;835          }836          const suspendedLanes = root.suspendedLanes;837          if (!isSubsetOfLanes(suspendedLanes, lanes)) {838            // We should prefer to render the fallback of at the last839            // suspended level. Ping the last suspended level to try840            // rendering it again.841            // FIXME: What if the suspended lanes are Idle? Should not restart.842            const eventTime = requestEventTime();843            markRootPinged(root, suspendedLanes, eventTime);844            break;845          }846          // The render is suspended, it hasn't timed out, and there's no847          // lower priority work to do. Instead of committing the fallback848          // immediately, wait for more data to arrive.849          root.timeoutHandle = scheduleTimeout(850            commitRoot.bind(null, root),851            msUntilTimeout,852          );853          break;854        }855      }856      // The work expired. Commit immediately.857      commitRoot(root);858      break;859    }860    case RootSuspendedWithDelay: {861      markRootSuspended(root, lanes);862      if (includesOnlyTransitions(lanes)) {863        // This is a transition, so we should exit without committing a864        // placeholder and without scheduling a timeout. Delay indefinitely865        // until we receive more data.866        break;867      }868      if (!shouldForceFlushFallbacksInDEV()) {869        // This is not a transition, but we did trigger an avoided state.870        // Schedule a placeholder to display after a short delay, using the Just871        // Noticeable Difference.872        // TODO: Is the JND optimization worth the added complexity? If this is873        // the only reason we track the event time, then probably not.874        // Consider removing.875        const mostRecentEventTime = getMostRecentEventTime(root, lanes);876        const eventTimeMs = mostRecentEventTime;877        const timeElapsedMs = now() - eventTimeMs;878        const msUntilTimeout = jnd(timeElapsedMs) - timeElapsedMs;879        // Don't bother with a very short suspense time.880        if (msUntilTimeout > 10) {881          // Instead of committing the fallback immediately, wait for more data882          // to arrive.883          root.timeoutHandle = scheduleTimeout(884            commitRoot.bind(null, root),885            msUntilTimeout,886          );887          break;888        }889      }890      // Commit the placeholder.891      commitRoot(root);892      break;893    }894    case RootCompleted: {895      // The work completed. Ready to commit.896      commitRoot(root);897      break;898    }899    default: {900      invariant(false, 'Unknown root exit status.');901    }902  }903}904function markRootSuspended(root, suspendedLanes) {905  // When suspending, we should always exclude lanes that were pinged or (more906  // rarely, since we try to avoid it) updated during the render phase.907  // TODO: Lol maybe there's a better way to factor this besides this908  // obnoxiously named function :)909  suspendedLanes = removeLanes(suspendedLanes, workInProgressRootPingedLanes);910  suspendedLanes = removeLanes(suspendedLanes, workInProgressRootUpdatedLanes);911  markRootSuspended_dontCallThisOneDirectly(root, suspendedLanes);912}913// This is the entry point for synchronous tasks that don't go914// through Scheduler915function performSyncWorkOnRoot(root) {916  if (enableProfilerTimer && enableProfilerNestedUpdatePhase) {917    syncNestedUpdateFlag();918  }919  invariant(920    (executionContext & (RenderContext | CommitContext)) === NoContext,921    'Should not already be working.',922  );923  flushPassiveEffects();924  let lanes;925  let exitStatus;926  if (927    root === workInProgressRoot &&928    areLanesExpired(root, workInProgressRootRenderLanes)929  ) {930    // There's a partial tree, and at least one of its lanes has expired. Finish931    // rendering it before rendering the rest of the expired work.932    lanes = workInProgressRootRenderLanes;933    exitStatus = renderRootSync(root, lanes);934  } else {935    lanes = getNextLanes(root, NoLanes);936    exitStatus = renderRootSync(root, lanes);937  }938  if (root.tag !== LegacyRoot && exitStatus === RootErrored) {939    executionContext |= RetryAfterError;940    // If an error occurred during hydration,941    // discard server response and fall back to client side render.942    if (root.hydrate) {943      root.hydrate = false;944      if (__DEV__) {945        errorHydratingContainer(root.containerInfo);946      }947      clearContainer(root.containerInfo);948    }949    // If something threw an error, try rendering one more time. We'll render950    // synchronously to block concurrent data mutations, and we'll includes951    // all pending updates are included. If it still fails after the second952    // attempt, we'll give up and commit the resulting tree.953    lanes = getLanesToRetrySynchronouslyOnError(root);954    if (lanes !== NoLanes) {955      exitStatus = renderRootSync(root, lanes);956    }957  }958  if (exitStatus === RootFatalErrored) {959    const fatalError = workInProgressRootFatalError;960    prepareFreshStack(root, NoLanes);961    markRootSuspended(root, lanes);962    ensureRootIsScheduled(root, now());963    throw fatalError;964  }965  // We now have a consistent tree. Because this is a sync render, we966  // will commit it even if something suspended.967  const finishedWork: Fiber = (root.current.alternate: any);968  root.finishedWork = finishedWork;969  root.finishedLanes = lanes;970  if (enableSyncDefaultUpdates && !includesSomeLane(lanes, SyncLane)) {971    finishConcurrentRender(root, exitStatus, lanes);972  } else {973    commitRoot(root);974  }975  // Before exiting, make sure there's a callback scheduled for the next976  // pending level.977  ensureRootIsScheduled(root, now());978  return null;979}980// TODO: Do we still need this API? I think we can delete it. Was only used981// internally.982export function flushRoot(root: FiberRoot, lanes: Lanes) {983  if (lanes !== NoLanes) {984    markRootExpired(root, lanes);985    ensureRootIsScheduled(root, now());...

ReactFiberWorkLoop.old.js

Source:ReactFiberWorkLoop.old.js

...787    // or, if something suspended, wait to commit it after a timeout.788    const finishedWork: Fiber = (root.current.alternate: any);789    root.finishedWork = finishedWork;790    root.finishedLanes = lanes;791    finishConcurrentRender(root, exitStatus, lanes);792  }793  ensureRootIsScheduled(root, now());794  if (root.callbackNode === originalCallbackNode) {795    // The task node scheduled for this root is the same one that's796    // currently executed. Need to return a continuation.797    return performConcurrentWorkOnRoot.bind(null, root);798  }799  return null;800}801function finishConcurrentRender(root, exitStatus, lanes) {802  switch (exitStatus) {803    case RootIncomplete:804    case RootFatalErrored: {805      invariant(false, 'Root did not complete. This is a bug in React.');806    }807    // Flow knows about invariant, so it complains if I add a break808    // statement, but eslint doesn't know about invariant, so it complains809    // if I do. eslint-disable-next-line no-fallthrough810    case RootErrored: {811      // We should have already attempted to retry this tree. If we reached812      // this point, it errored again. Commit it.813      commitRoot(root);814      break;815    }816    case RootSuspended: {817      markRootSuspended(root, lanes);818      // We have an acceptable loading state. We need to figure out if we819      // should immediately commit it or wait a bit.820      if (821        includesOnlyRetries(lanes) &&822        // do not delay if we're inside an act() scope823        !shouldForceFlushFallbacksInDEV()824      ) {825        // This render only included retries, no updates. Throttle committing826        // retries so that we don't show too many loading states too quickly.827        const msUntilTimeout =828          globalMostRecentFallbackTime + FALLBACK_THROTTLE_MS - now();829        // Don't bother with a very short suspense time.830        if (msUntilTimeout > 10) {831          const nextLanes = getNextLanes(root, NoLanes);832          if (nextLanes !== NoLanes) {833            // There's additional work on this root.834            break;835          }836          const suspendedLanes = root.suspendedLanes;837          if (!isSubsetOfLanes(suspendedLanes, lanes)) {838            // We should prefer to render the fallback of at the last839            // suspended level. Ping the last suspended level to try840            // rendering it again.841            // FIXME: What if the suspended lanes are Idle? Should not restart.842            const eventTime = requestEventTime();843            markRootPinged(root, suspendedLanes, eventTime);844            break;845          }846          // The render is suspended, it hasn't timed out, and there's no847          // lower priority work to do. Instead of committing the fallback848          // immediately, wait for more data to arrive.849          root.timeoutHandle = scheduleTimeout(850            commitRoot.bind(null, root),851            msUntilTimeout,852          );853          break;854        }855      }856      // The work expired. Commit immediately.857      commitRoot(root);858      break;859    }860    case RootSuspendedWithDelay: {861      markRootSuspended(root, lanes);862      if (includesOnlyTransitions(lanes)) {863        // This is a transition, so we should exit without committing a864        // placeholder and without scheduling a timeout. Delay indefinitely865        // until we receive more data.866        break;867      }868      if (!shouldForceFlushFallbacksInDEV()) {869        // This is not a transition, but we did trigger an avoided state.870        // Schedule a placeholder to display after a short delay, using the Just871        // Noticeable Difference.872        // TODO: Is the JND optimization worth the added complexity? If this is873        // the only reason we track the event time, then probably not.874        // Consider removing.875        const mostRecentEventTime = getMostRecentEventTime(root, lanes);876        const eventTimeMs = mostRecentEventTime;877        const timeElapsedMs = now() - eventTimeMs;878        const msUntilTimeout = jnd(timeElapsedMs) - timeElapsedMs;879        // Don't bother with a very short suspense time.880        if (msUntilTimeout > 10) {881          // Instead of committing the fallback immediately, wait for more data882          // to arrive.883          root.timeoutHandle = scheduleTimeout(884            commitRoot.bind(null, root),885            msUntilTimeout,886          );887          break;888        }889      }890      // Commit the placeholder.891      commitRoot(root);892      break;893    }894    case RootCompleted: {895      // The work completed. Ready to commit.896      commitRoot(root);897      break;898    }899    default: {900      invariant(false, 'Unknown root exit status.');901    }902  }903}904function markRootSuspended(root, suspendedLanes) {905  // When suspending, we should always exclude lanes that were pinged or (more906  // rarely, since we try to avoid it) updated during the render phase.907  // TODO: Lol maybe there's a better way to factor this besides this908  // obnoxiously named function :)909  suspendedLanes = removeLanes(suspendedLanes, workInProgressRootPingedLanes);910  suspendedLanes = removeLanes(suspendedLanes, workInProgressRootUpdatedLanes);911  markRootSuspended_dontCallThisOneDirectly(root, suspendedLanes);912}913// This is the entry point for synchronous tasks that don't go914// through Scheduler915function performSyncWorkOnRoot(root) {916  if (enableProfilerTimer && enableProfilerNestedUpdatePhase) {917    syncNestedUpdateFlag();918  }919  invariant(920    (executionContext & (RenderContext | CommitContext)) === NoContext,921    'Should not already be working.',922  );923  flushPassiveEffects();924  let lanes;925  let exitStatus;926  if (927    root === workInProgressRoot &&928    areLanesExpired(root, workInProgressRootRenderLanes)929  ) {930    // There's a partial tree, and at least one of its lanes has expired. Finish931    // rendering it before rendering the rest of the expired work.932    lanes = workInProgressRootRenderLanes;933    exitStatus = renderRootSync(root, lanes);934  } else {935    lanes = getNextLanes(root, NoLanes);936    exitStatus = renderRootSync(root, lanes);937  }938  if (root.tag !== LegacyRoot && exitStatus === RootErrored) {939    executionContext |= RetryAfterError;940    // If an error occurred during hydration,941    // discard server response and fall back to client side render.942    if (root.hydrate) {943      root.hydrate = false;944      if (__DEV__) {945        errorHydratingContainer(root.containerInfo);946      }947      clearContainer(root.containerInfo);948    }949    // If something threw an error, try rendering one more time. We'll render950    // synchronously to block concurrent data mutations, and we'll includes951    // all pending updates are included. If it still fails after the second952    // attempt, we'll give up and commit the resulting tree.953    lanes = getLanesToRetrySynchronouslyOnError(root);954    if (lanes !== NoLanes) {955      exitStatus = renderRootSync(root, lanes);956    }957  }958  if (exitStatus === RootFatalErrored) {959    const fatalError = workInProgressRootFatalError;960    prepareFreshStack(root, NoLanes);961    markRootSuspended(root, lanes);962    ensureRootIsScheduled(root, now());963    throw fatalError;964  }965  // We now have a consistent tree. Because this is a sync render, we966  // will commit it even if something suspended.967  const finishedWork: Fiber = (root.current.alternate: any);968  root.finishedWork = finishedWork;969  root.finishedLanes = lanes;970  if (enableSyncDefaultUpdates && !includesSomeLane(lanes, SyncLane)) {971    finishConcurrentRender(root, exitStatus, lanes);972  } else {973    commitRoot(root);974  }975  // Before exiting, make sure there's a callback scheduled for the next976  // pending level.977  ensureRootIsScheduled(root, now());978  return null;979}980// TODO: Do we still need this API? I think we can delete it. Was only used981// internally.982export function flushRoot(root: FiberRoot, lanes: Lanes) {983  if (lanes !== NoLanes) {984    markRootExpired(root, lanes);985    ensureRootIsScheduled(root, now());...

FiberWorkLoop.js

Source:FiberWorkLoop.js

...149    // now we have a consistent tree and ready to commit.150    const finishedWork = root.current.alternate151    root.finishedWork = finishedWork;152    root.finishedLanes = lanes;153    finishConcurrentRender(root, exitStatus, lanes);154  }155  //schedule new tasks found in Render Phase156  ensureRootIsScheduled(root, performance.now());157  // root.callbackNode is always relevant to a task which hasn't completely 158  // finished due to expiration or some other reasons and it will be set to 159  // null in Commit Phase.160  if (root.callbackNode === originalCallbackNode){161    return performConcurrentWorkOnRoot.bind(null, root);162  }163  return null;164}165function finishConcurrentRender(root, exitStatus, lanes){166  switch (exitStatus){167    case RootCompleted:{168      commitRoot(root);169      break;170    }171    case RootSuspendedWithDelay:172    case RootSuspended:{  173      markRootSuspended(root, lanes);174      // work expired. Commit immediately.175      commitRoot(root);176      break;177    }178  }179}...

ReactFiberWorkLoop.js

Source:ReactFiberWorkLoop.js

...25  const finishedWork = root.current.alternate;26  if (exitStatus === RootCompleted) {27    root.finishedWork = finishedWork;28  }29  finishConcurrentRender(root, exitStatus) {30  }31}32function finishConcurrentRender(root, exitStatus) {33  switch(exitStatus) {34    case RootCompleted:35      commitRoot(root)36  }37}38function commitRoot(root) {39  commitRootImpl(root)40}41function commitRootImpl(root) {42  const finishedWork = root.finishedWork43  root.finishedWork = null44  if(finishedWork.subtreeFlags & Passive)45}46// è·useEffectç¸å³...

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.screenshot({ path: 'google.png' });7  await page.context().finishConcurrentRender();8  await browser.close();9})();10const { chromium } = require('playwright');11(async () => {12  const browser = await chromium.launch();13  const context = await browser.newContext();14  const page = await context.newPage();15  await page.screenshot({ path: 'google.png' });16  await page.context().finishConcurrentRender();17  await browser.close();18})();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  await page.screenshot({ path: 'google.png' });25  await page.context().finishConcurrentRender();26  await browser.close();27})();28const { chromium } = require('playwright');29(async () => {30  const browser = await chromium.launch();31  const context = await browser.newContext();32  const page = await context.newPage();33  await page.screenshot({ path: 'google.png' });34  await page.context().finishConcurrentRender();35  await browser.close();36})();37const { chromium } = require('playwright');38(async () => {39  const browser = await chromium.launch();40  const context = await browser.newContext();41  const page = await context.newPage();42  await page.screenshot({ path: 'google.png' });43  await page.context().finishConcurrentRender();44  await browser.close();45})();

Using AI Code Generation

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

Using AI Code Generation

1const { chromium, webkit, firefox } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.screenshot({ path: 'example.png' });7  await page._delegate.finishConcurrentRender();8  await browser.close();9})();10const { chromium, webkit, firefox } = require('playwright');11(async () => {12  const browser = await chromium.launch();13  const context = await browser.newContext();14  const page = await context.newPage();15  await page.screenshot({ path: 'example.png' });16  await page._delegate.finishConcurrentRender();17  await browser.close();18})();19const { chromium, webkit, firefox } = require('playwright');20(async () => {21  const browser = await chromium.launch();22  const context = await browser.newContext();23  const page = await context.newPage();24  await page.screenshot({ path: 'example.png' });25  await page._delegate.finishConcurrentRender();26  await browser.close();27})();28const { chromium, webkit, firefox } = require('playwright');29(async () => {30  const browser = await chromium.launch();31  const context = await browser.newContext();32  const page = await context.newPage();33  await page.screenshot({ path: 'example.png' });34  await page._delegate.finishConcurrentRender();35  await browser.close();36})();37const { chromium, webkit, firefox } = require('playwright');38(async () => {39  const browser = await chromium.launch();40  const context = await browser.newContext();41  const page = await context.newPage();42  await page.screenshot({ path: 'example.png' });

Using AI Code Generation

1const playwright = require('playwright');2const { finishConcurrentRender } = require('playwright/lib/server/browserContext');3(async () => {4  const browser = await playwright['chromium'].launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  await finishConcurrentRender(page);8  await page.screenshot({ path: 'example.png' });9  await browser.close();10})();11{12  "scripts": {13  },14  "dependencies": {15  }16}17@hemanth22, you need to use the internal API from the same version of Playwright as you use in your tests. In your case, you are using the latest version of Playwright (1.13.0), but the internal API is from version 1.11.1. You can use the following command to install the internal API:

Using AI Code Generation

1const { chromium } = require('playwright');2const { finishConcurrentRender } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');3(async () => {4  const browser = await chromium.launch({ headless: false });5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.click('text=Docs');8  await finishConcurrentRender(page);9  await page.screenshot({ path: 'screenshot.png' });10  await browser.close();11})();

Using AI Code Generation

1const { finishConcurrentRender } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const page = await browser.newPage();6  await page.click('text=Get started');7  await finishConcurrentRender(page);8  await browser.close();9})();10const { finishConcurrentRender } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');11const { chromium } = require('playwright');12describe('My test', () => {13  it('should work', async () => {14    const browser = await chromium.launch();15    const page = await browser.newPage();16    await page.click('text=Get started');17    await finishConcurrentRender(page);18    await browser.close();19  });20});

Using AI Code Generation

1const { chromium } = require('playwright');2const { PlaywrightInternal } = require('playwright/lib/server/playwright');3const { Page } = require('playwright/lib/server/page');4const { Frame } = require('playwright/lib/server/frame');5(async () => {6  const browser = await chromium.launch();7  const context = await browser.newContext();8  const page = await context.newPage();9  await page.evaluate(async () => {10    const playwrightInternal = new PlaywrightInternal();11    const page = new Page(playwrightInternal, null, null, null, null);12    const frame = new Frame(page, null, null);13    await frame.finishConcurrentRender();14  });15  await browser.close();16})();17const { chromium } = require('playwright');18const { PlaywrightInternal } = require('playwright/lib/server/playwright');19const { Page } = require('playwright/lib/server/page');20const { Frame } = require('playwright/lib/server/frame');21(async () => {22  const browser = await chromium.launch();23  const context = await browser.newContext();24  const page = await context.newPage();25  await page.evaluate(async () => {26    const playwrightInternal = new PlaywrightInternal();27    const page = new Page(playwrightInternal, null, null, null, null);28    const frame = new Frame(page, null, null);29    await frame.finishConcurrentRender();30  });31  await browser.close();32})();33const { chromium } = require('playwright');34const { PlaywrightInternal } = require('playwright/lib/server/playwright');35const { Page } = require('playwright/lib/server/page');36const { Frame } = require('playwright/lib/server/frame');37(async () => {38  const browser = await chromium.launch();39  const context = await browser.newContext();40  const page = await context.newPage();41  await page.evaluate(async () => {42    const playwrightInternal = new PlaywrightInternal();43    const page = new Page(playwrightInternal, null, null, null, null);44    const frame = new Frame(page, null, null);

Using AI Code Generation

1const { finishConcurrentRender } = require('playwright/lib/server/chromium/crPage');2await finishConcurrentRender();3const { finishConcurrentRender } = require('playwright/lib/server/chromium/crPage');4await finishConcurrentRender();5const { finishConcurrentRender } = require('playwright/lib/server/chromium/crPage');6await finishConcurrentRender();7const { finishConcurrentRender } = require('playwright/lib/server/chromium/crPage');8await finishConcurrentRender();9const { finishConcurrentRender } = require('playwright/lib/server/chromium/crPage');10await finishConcurrentRender();11const { finishConcurrentRender } = require('playwright/lib/server/chromium/crPage');12await finishConcurrentRender();13const { finishConcurrentRender } = require('playwright/lib/server/chromium/crPage');14await finishConcurrentRender();15const { finishConcurrentRender } = require('playwright/lib/server/chromium/crPage');16await finishConcurrentRender();17const { finishConcurrentRender } = require('playwright/lib/server/chromium/crPage');18await finishConcurrentRender();19const { finishConcurrentRender } = require('playwright/lib/server/chromium/crPage');20await finishConcurrentRender();21const { finishConcurrentRender } = require('playwright/lib/server/chromium/crPage');22await finishConcurrentRender();

Using AI Code Generation

1const playwright = require('playwright');2const { finishConcurrentRender } = require('playwright/lib/server/browserContext');3(async () => {4    const browser = await playwright.chromium.launch();5    const context = await browser.newContext();6    await finishConcurrentRender(context);7    await browser.close();8})();9const { BrowserContext } = require('./browserContext');10BrowserContext.prototype.finishConcurrentRender = function() {11    if (!this._concurrentRenderPromise) {12        throw new Error('Cannot call finishConcurrentRender when concurrent rendering is not enabled');13    }14    this._concurrentRenderPromise.resolve();15    this._concurrentRenderPromise = null;16};17const playwright = require('playwright');18const { finishConcurrentRender } = require('playwright/lib/server/browserContext');19(async () => {20    const browser = await playwright.chromium.launch();21    const context = await browser.newContext();22    await finishConcurrentRender(context);23    await browser.close();24})();25const { BrowserContext } = require('./browserContext');26BrowserContext.prototype.finishConcurrentRender = function() {27    if (!this._concurrentRenderPromise) {28        throw new Error('Cannot call finishConcurrentRender when concurrent rendering is not enabled');29    }30    this._concurrentRenderPromise.resolve();31    this._concurrentRenderPromise = null;32};

Using AI Code Generation

1const context = page.context();2const newPage = await context.newPage();3const context = page.context();4const newPage = await context.newPage();5const context = page.context();6const newPage = await context.newPage();7const context = page.context();8const newPage = await context.newPage();9const context = page.context();10const newPage = await context.newPage();

Playwright tutorial

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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.