Best JavaScript code snippet using playwright-internal
ReactFiberNewContext.js
Source:ReactFiberNewContext.js  
...132    }133    return changedBits | 0;134  }135}136function scheduleWorkOnParentPath(137  parent: Fiber | null,138  renderExpirationTime: ExpirationTime,139) {140  // Update the child expiration time of all the ancestors, including141  // the alternates.142  let node = parent;143  while (node !== null) {144    let alternate = node.alternate;145    if (node.childExpirationTime < renderExpirationTime) {146      node.childExpirationTime = renderExpirationTime;147      if (148        alternate !== null &&149        alternate.childExpirationTime < renderExpirationTime150      ) {151        alternate.childExpirationTime = renderExpirationTime;152      }153    } else if (154      alternate !== null &&155      alternate.childExpirationTime < renderExpirationTime156    ) {157      alternate.childExpirationTime = renderExpirationTime;158    } else {159      // Neither alternate was updated, which means the rest of the160      // ancestor path already has sufficient priority.161      break;162    }163    node = node.return;164  }165}166export function propagateContextChange(167  workInProgress: Fiber,168  context: ReactContext<mixed>,169  changedBits: number,170  renderExpirationTime: ExpirationTime,171): void {172  let fiber = workInProgress.child;173  if (fiber !== null) {174    // Set the return pointer of the child to the work-in-progress fiber.175    fiber.return = workInProgress;176  }177  while (fiber !== null) {178    let nextFiber;179    // Visit this fiber.180    const list = fiber.contextDependencies;181    if (list !== null) {182      nextFiber = fiber.child;183      let dependency = list.first;184      while (dependency !== null) {185        // Check if the context matches.186        if (187          dependency.context === context &&188          (dependency.observedBits & changedBits) !== 0189        ) {190          // Match! Schedule an update on this fiber.191          if (fiber.tag === ClassComponent) {192            // Schedule a force update on the work-in-progress.193            const update = createUpdate(renderExpirationTime);194            update.tag = ForceUpdate;195            // TODO: Because we don't have a work-in-progress, this will add the196            // update to the current fiber, too, which means it will persist even if197            // this render is thrown away. Since it's a race condition, not sure it's198            // worth fixing.199            enqueueUpdate(fiber, update);200          }201          if (fiber.expirationTime < renderExpirationTime) {202            fiber.expirationTime = renderExpirationTime;203          }204          let alternate = fiber.alternate;205          if (206            alternate !== null &&207            alternate.expirationTime < renderExpirationTime208          ) {209            alternate.expirationTime = renderExpirationTime;210          }211          scheduleWorkOnParentPath(fiber.return, renderExpirationTime);212          // Mark the expiration time on the list, too.213          if (list.expirationTime < renderExpirationTime) {214            list.expirationTime = renderExpirationTime;215          }216          // Since we already found a match, we can stop traversing the217          // dependency list.218          break;219        }220        dependency = dependency.next;221      }222    } else if (fiber.tag === ContextProvider) {223      // Don't scan deeper if this is a matching provider224      nextFiber = fiber.type === workInProgress.type ? null : fiber.child;225    } else if (226      enableSuspenseServerRenderer &&227      fiber.tag === DehydratedSuspenseComponent228    ) {229      // If a dehydrated suspense component is in this subtree, we don't know230      // if it will have any context consumers in it. The best we can do is231      // mark it as having updates on its children.232      if (fiber.expirationTime < renderExpirationTime) {233        fiber.expirationTime = renderExpirationTime;234      }235      let alternate = fiber.alternate;236      if (237        alternate !== null &&238        alternate.expirationTime < renderExpirationTime239      ) {240        alternate.expirationTime = renderExpirationTime;241      }242      // This is intentionally passing this fiber as the parent243      // because we want to schedule this fiber as having work244      // on its children. We'll use the childExpirationTime on245      // this fiber to indicate that a context has changed.246      scheduleWorkOnParentPath(fiber, renderExpirationTime);247      nextFiber = fiber.sibling;248    } else {249      // Traverse down.250      nextFiber = fiber.child;251    }252    if (nextFiber !== null) {253      // Set the return pointer of the child to the work-in-progress fiber.254      nextFiber.return = fiber;255    } else {256      // No child. Traverse to next sibling.257      nextFiber = fiber;258      while (nextFiber !== null) {259        if (nextFiber === workInProgress) {260          // We're back to the root of this subtree. Exit....ReactFiberNewContext.new.js
Source:ReactFiberNewContext.new.js  
...131    }132    return changedBits | 0;133  }134}135export function scheduleWorkOnParentPath(136  parent              ,137  renderLanes       ,138) {139  // Update the child lanes of all the ancestors, including the alternates.140  let node = parent;141  while (node !== null) {142    const alternate = node.alternate;143    if (!isSubsetOfLanes(node.childLanes, renderLanes)) {144      node.childLanes = mergeLanes(node.childLanes, renderLanes);145      if (alternate !== null) {146        alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes);147      }148    } else if (149      alternate !== null &&150      !isSubsetOfLanes(alternate.childLanes, renderLanes)151    ) {152      alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes);153    } else {154      // Neither alternate was updated, which means the rest of the155      // ancestor path already has sufficient priority.156      break;157    }158    node = node.return;159  }160}161export function propagateContextChange(162  workInProgress       ,163  context                     ,164  changedBits        ,165  renderLanes       ,166)       {167  let fiber = workInProgress.child;168  if (fiber !== null) {169    // Set the return pointer of the child to the work-in-progress fiber.170    fiber.return = workInProgress;171  }172  while (fiber !== null) {173    let nextFiber;174    // Visit this fiber.175    const list = fiber.dependencies;176    if (list !== null) {177      nextFiber = fiber.child;178      let dependency = list.firstContext;179      while (dependency !== null) {180        // Check if the context matches.181        if (182          dependency.context === context &&183          (dependency.observedBits & changedBits) !== 0184        ) {185          // Match! Schedule an update on this fiber.186          if (fiber.tag === ClassComponent) {187            // Schedule a force update on the work-in-progress.188            const update = createUpdate(189              NoTimestamp,190              pickArbitraryLane(renderLanes),191            );192            update.tag = ForceUpdate;193            // TODO: Because we don't have a work-in-progress, this will add the194            // update to the current fiber, too, which means it will persist even if195            // this render is thrown away. Since it's a race condition, not sure it's196            // worth fixing.197            enqueueUpdate(fiber, update);198          }199          fiber.lanes = mergeLanes(fiber.lanes, renderLanes);200          const alternate = fiber.alternate;201          if (alternate !== null) {202            alternate.lanes = mergeLanes(alternate.lanes, renderLanes);203          }204          scheduleWorkOnParentPath(fiber.return, renderLanes);205          // Mark the updated lanes on the list, too.206          list.lanes = mergeLanes(list.lanes, renderLanes);207          // Since we already found a match, we can stop traversing the208          // dependency list.209          break;210        }211        dependency = dependency.next;212      }213    } else if (fiber.tag === ContextProvider) {214      // Don't scan deeper if this is a matching provider215      nextFiber = fiber.type === workInProgress.type ? null : fiber.child;216    } else if (217      enableSuspenseServerRenderer &&218      fiber.tag === DehydratedFragment219    ) {220      // If a dehydrated suspense boundary is in this subtree, we don't know221      // if it will have any context consumers in it. The best we can do is222      // mark it as having updates.223      const parentSuspense = fiber.return;224      invariant(225        parentSuspense !== null,226        'We just came from a parent so we must have had a parent. This is a bug in React.',227      );228      parentSuspense.lanes = mergeLanes(parentSuspense.lanes, renderLanes);229      const alternate = parentSuspense.alternate;230      if (alternate !== null) {231        alternate.lanes = mergeLanes(alternate.lanes, renderLanes);232      }233      // This is intentionally passing this fiber as the parent234      // because we want to schedule this fiber as having work235      // on its children. We'll use the childLanes on236      // this fiber to indicate that a context has changed.237      scheduleWorkOnParentPath(parentSuspense, renderLanes);238      nextFiber = fiber.sibling;239    } else {240      // Traverse down.241      nextFiber = fiber.child;242    }243    if (nextFiber !== null) {244      // Set the return pointer of the child to the work-in-progress fiber.245      nextFiber.return = fiber;246    } else {247      // No child. Traverse to next sibling.248      nextFiber = fiber;249      while (nextFiber !== null) {250        if (nextFiber === workInProgress) {251          // We're back to the root of this subtree. Exit....ReactFiberNewContext.old.js
Source:ReactFiberNewContext.old.js  
...62      }63      return changedBits | 0;64    }65  }66  function scheduleWorkOnParentPath(parent, renderLanes) {67    // Update the child lanes of all the ancestors, including the alternates.68    var node = parent;69    while (node !== null) {70      var alternate = node.alternate;71      if (!isSubsetOfLanes(node.childLanes, renderLanes)) {72        node.childLanes = mergeLanes(node.childLanes, renderLanes);73        if (alternate !== null) {74          alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes);75        }76      } else if (alternate !== null && !isSubsetOfLanes(alternate.childLanes, renderLanes)) {77        alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes);78      } else {79        // Neither alternate was updated, which means the rest of the80        // ancestor path already has sufficient priority.81        break;82      }83      node = node.return;84    }85  }86  function propagateContextChange(workInProgress, context, changedBits, renderLanes) {87    var fiber = workInProgress.child;88    if (fiber !== null) {89      // Set the return pointer of the child to the work-in-progress fiber.90      fiber.return = workInProgress;91    }92    while (fiber !== null) {93      var nextFiber = void 0; // Visit this fiber.94      var list = fiber.dependencies;95      if (list !== null) {96        nextFiber = fiber.child;97        var dependency = list.firstContext;98        while (dependency !== null) {99          // Check if the context matches.100          if (dependency.context === context && (dependency.observedBits & changedBits) !== 0) {101            // Match! Schedule an update on this fiber.102            if (fiber.tag === ClassComponent) {103              // Schedule a force update on the work-in-progress.104              var update = createUpdate(NoTimestamp, pickArbitraryLane(renderLanes));105              update.tag = ForceUpdate; // TODO: Because we don't have a work-in-progress, this will add the106              // update to the current fiber, too, which means it will persist even if107              // this render is thrown away. Since it's a race condition, not sure it's108              // worth fixing.109              enqueueUpdate(fiber, update);110            }111            fiber.lanes = mergeLanes(fiber.lanes, renderLanes);112            var alternate = fiber.alternate;113            if (alternate !== null) {114              alternate.lanes = mergeLanes(alternate.lanes, renderLanes);115            }116            scheduleWorkOnParentPath(fiber.return, renderLanes); // Mark the updated lanes on the list, too.117            list.lanes = mergeLanes(list.lanes, renderLanes); // Since we already found a match, we can stop traversing the118            // dependency list.119            break;120          }121          dependency = dependency.next;122        }123      } else if (fiber.tag === ContextProvider) {124        // Don't scan deeper if this is a matching provider125        nextFiber = fiber.type === workInProgress.type ? null : fiber.child;126      } else if ( fiber.tag === DehydratedFragment) {127        // If a dehydrated suspense boundary is in this subtree, we don't know128        // if it will have any context consumers in it. The best we can do is129        // mark it as having updates.130        var parentSuspense = fiber.return;131        if (!(parentSuspense !== null)) {132          {133            throw Error( "We just came from a parent so we must have had a parent. This is a bug in React." );134          }135        }136        parentSuspense.lanes = mergeLanes(parentSuspense.lanes, renderLanes);137        var _alternate = parentSuspense.alternate;138        if (_alternate !== null) {139          _alternate.lanes = mergeLanes(_alternate.lanes, renderLanes);140        } // This is intentionally passing this fiber as the parent141        // because we want to schedule this fiber as having work142        // on its children. We'll use the childLanes on143        // this fiber to indicate that a context has changed.144        scheduleWorkOnParentPath(parentSuspense, renderLanes);145        nextFiber = fiber.sibling;146      } else {147        // Traverse down.148        nextFiber = fiber.child;149      }150      if (nextFiber !== null) {151        // Set the return pointer of the child to the work-in-progress fiber.152        nextFiber.return = fiber;153      } else {154        // No child. Traverse to next sibling.155        nextFiber = fiber;156        while (nextFiber !== null) {157          if (nextFiber === workInProgress) {158            // We're back to the root of this subtree. Exit....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.waitForTimeout(10000);7  await page.close();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.waitForTimeout(10000);16  await page.close();17  await browser.close();18  await browser._connection._transport._ws._channel.scheduleWorkOnParentPath('test.js');19})();20const { chromium } = require('playwright');21(async () => {22  const browser = await chromium.launch();23  const context = await browser.newContext();24  const page = await context.newPage();25  await page.waitForTimeout(10000);26  await page.close();27  await browser.close();Using AI Code Generation
1const playwright = require("playwright");2(async () => {3  const browser = await playwright.chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.evaluate(async () => {7    const { scheduleWorkOnParentPath } = window["playwright"];8    await scheduleWorkOnParentPath("/path/to/parent", () => {9      console.log("This is parent page");10    });11  });12  await browser.close();13})();14const playwright = require("playwright");15(async () => {16  const browser = await playwright.chromium.launch();17  const context = await browser.newContext();18  const page = await context.newPage();19  await page.evaluate(async () => {20    const { scheduleWorkOnChildPath } = window["playwright"];21    await scheduleWorkOnChildPath("/path/to/child", () => {22      console.log("This is child page");23    });24  });25  await browser.close();26})();27const playwright = require("playwright");28(async () => {29  const browser = await playwright.chromium.launch();30  const context = await browser.newContext();31  const page = await context.newPage();32  await page.evaluate(async () => {33    const { scheduleWorkOnSiblingPath } = window["playwright"];34    await scheduleWorkOnSiblingPath("/path/to/sibling", () => {35      console.log("This is sibling page");36    });37  });38  await browser.close();39})();40const playwright = require("playwright");41(async () => {42  const browser = await playwright.chromium.launch();43  const context = await browser.newContext();44  const page = await context.newPage();45  await page.evaluate(async () => {46    const { scheduleWorkOnSiblingPath } = window["playwright"];47    await scheduleWorkOnSiblingPath("/path/to/sibling", () => {48      console.log("This is sibling page");49    });50  });51  await browser.close();52})();53const playwright = require("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.evaluate(() => {7    window.parent.scheduleWorkOnParentPath('test.js');8  });9  await browser.close();10})();11const { chromium } = require('playwright');12(async () => {13  const browser = await chromium.launch();14  const context = await browser.newContext();15  const page = await context.newPage();16  await page.evaluate(() => {17    window.parent.scheduleWorkOnParentPath('test.js');18  });19  await browser.close();20})();Using AI Code Generation
1const playwright = require('playwright');2const { scheduleWorkOnParentPath } = require('playwright/lib/server/browserContext');3(async () => {4  const browser = await playwright.chromium.launch();5  const context = await browser.newContext();6  await scheduleWorkOnParentPath(context, '/path/to/parent');7})();8const playwright = require('playwright');9const { scheduleWorkOnParentPath } = require('playwright/lib/server/browserContext');10(async () => {11  const browser = await playwright.chromium.launch();12  const context = await browser.newContext();13  await scheduleWorkOnParentPath(context, '/path/to/parent');14})();Using AI Code Generation
1const playwright = require('playwright');2const { scheduleWorkOnParentPath } = require('playwright/lib/server/supplements/recorder/recorderSupplement');3(async () => {4  const browser = await playwright['chromium'].launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.click('input[name="q"]');8  await scheduleWorkOnParentPath(page, '/html/body/div/div[2]/form/div[2]/div/div[2]/div[2]/div[2]/input');9  await page.type('input[name="q"]', 'Hello World!');10  await page.keyboard.press('Enter');11  await browser.close();12})();Using AI Code Generation
1const path = require('path');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch({5  });6  const context = await browser.newContext();7  const page = await context.newPage();8  const parentPath = path.dirname(page.frame()._url);9  await page.frame().scheduleWorkOnParentPath(parentPath);10  await page.waitForTimeout(10000);11  await browser.close();12})();Using AI Code Generation
1const playwright = require('playwright');2const { scheduleWorkOnParentPath } = playwright.internal;3(async () => {4  const browser = await playwright.chromium.launch();5  const page = await browser.newPage();6  await scheduleWorkOnParentPath(page, '/docs/core-concepts');7  await page.screenshot({ path: 'example.png' });8  await browser.close();9})();10const playwright = require('playwright');11const { scheduleWorkOnParentPath } = playwright.internal;12(async () => {13  const browser = await playwright.chromium.launch();14  const page = await browser.newPage();15  await scheduleWorkOnParentPath(page, '/docs/core-concepts');16  await page.screenshot({ path: 'example.png' });17  await browser.close();18})();19const playwright = require('playwright');20const { scheduleWorkOnParentPath } = playwright.internal;21(async () => {22  const browser = await playwright.chromium.launch();23  const page = await browser.newPage();24  await scheduleWorkOnParentPath(page, '/docs/core-concepts');25  await page.screenshot({ path: 'example.png' });26  await browser.close();27})();28const playwright = require('playwright');29const { scheduleWorkOnParentPath } = playwright.internal;30(async () => {31  const browser = await playwright.chromium.launch();32  const page = await browser.newPage();33  await scheduleWorkOnParentPath(page, '/docs/core-concepts');34  await page.screenshot({ path: 'example.png' });35  await browser.close();36})();37const playwright = require('playwright');38const { scheduleWorkOnParentPath } = playwright.internal;39(async () => {40  const browser = await playwright.chromium.launch();41  const page = await browser.newPage();Using AI Code Generation
1const { scheduleWorkOnParentPath } = require('playwright-core/lib/server/frames');2const { chromium } = require('playwright-core');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  await scheduleWorkOnParentPath(page.mainFrame(), path.join(__dirname, 'child.html'));9  await page.waitForTimeout(1000);10  await browser.close();11})();12(async () => {13  const { scheduleWorkOnParentPath } = require('playwright-core/lib/server/frames');14  const { chromium } = require('playwright-core');15  const path = require('path');16  const browser = await chromium.launch();17  const context = await browser.newContext();18  const page = await context.newPage();19  await scheduleWorkOnParentPath(page.mainFrame(), path.join(__dirname, 'grandchild.html'));20  await page.waitForTimeout(1000);21  await browser.close();22})();23(async () => {24  const { chromium } = require('playwright-core');25  const browser = await chromium.launch();26  const context = await browser.newContext();27  const page = await context.newPage();28  await page.waitForTimeout(1000);29  await browser.close();30})();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.
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