How to use propagateContextChange method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberNewContext.js

Source:ReactFiberNewContext.js

...119    }120    return changedBits | 0;121  }122}123export function propagateContextChange(124  workInProgress: Fiber,125  context: ReactContext<mixed>,126  changedBits: number,127  renderExpirationTime: ExpirationTime,128): void {129  let fiber = workInProgress.child;130  if (fiber !== null) {131    // Set the return pointer of the child to the work-in-progress fiber.132    fiber.return = workInProgress;133  }134  while (fiber !== null) {135    let nextFiber;136    // Visit this fiber.137    let dependency = fiber.firstContextDependency;138    if (dependency !== null) {139      do {140        // Check if the context matches.141        if (142          dependency.context === context &&143          (dependency.observedBits & changedBits) !== 0144        ) {145          // Match! Schedule an update on this fiber.146          if (147            fiber.expirationTime === NoWork ||148            fiber.expirationTime > renderExpirationTime149          ) {150            fiber.expirationTime = renderExpirationTime;151          }152          let alternate = fiber.alternate;153          if (154            alternate !== null &&155            (alternate.expirationTime === NoWork ||156              alternate.expirationTime > renderExpirationTime)157          ) {158            alternate.expirationTime = renderExpirationTime;159          }160          // Update the child expiration time of all the ancestors, including161          // the alternates.162          let node = fiber.return;163          while (node !== null) {164            alternate = node.alternate;165            if (166              node.childExpirationTime === NoWork ||167              node.childExpirationTime > renderExpirationTime168            ) {169              node.childExpirationTime = renderExpirationTime;170              if (171                alternate !== null &&172                (alternate.childExpirationTime === NoWork ||173                  alternate.childExpirationTime > renderExpirationTime)174              ) {175                alternate.childExpirationTime = renderExpirationTime;176              }177            } else if (178              alternate !== null &&179              (alternate.childExpirationTime === NoWork ||180                alternate.childExpirationTime > renderExpirationTime)181            ) {182              alternate.childExpirationTime = renderExpirationTime;183            } else {184              // Neither alternate was updated, which means the rest of the185              // ancestor path already has sufficient priority.186              break;187            }188            node = node.return;189          }190          // Don't scan deeper than a matching consumer. When we render the191          // consumer, we'll continue scanning from that point. This way the192          // scanning work is time-sliced.193          nextFiber = null;194        } else {195          nextFiber = fiber.child;196        }197        dependency = dependency.next;198      } while (dependency !== null);199    } else if (fiber.tag === ContextProvider) {200      // Don't scan deeper if this is a matching provider201      nextFiber = fiber.type === workInProgress.type ? null : fiber.child;202    } else {203      // Traverse down.204      nextFiber = fiber.child;205    }206    if (nextFiber !== null) {207      // Set the return pointer of the child to the work-in-progress fiber.208      nextFiber.return = fiber;209    } else {210      // No child. Traverse to next sibling.211      nextFiber = fiber;212      while (nextFiber !== null) {213        if (nextFiber === workInProgress) {214          // We're back to the root of this subtree. Exit.215          nextFiber = null;216          break;217        }218        let sibling = nextFiber.sibling;219        if (sibling !== null) {220          // Set the return pointer of the sibling to the work-in-progress fiber.221          sibling.return = nextFiber.return;222          nextFiber = sibling;223          break;224        }225        // No more siblings. Traverse up.226        nextFiber = nextFiber.return;227      }228    }229    fiber = nextFiber;230  }231}232export function prepareToReadContext(233  workInProgress: Fiber,234  renderExpirationTime: ExpirationTime,235): boolean {236  currentlyRenderingFiber = workInProgress;237  lastContextDependency = null;238  lastContextWithAllBitsObserved = null;239  const firstContextDependency = workInProgress.firstContextDependency;240  if (firstContextDependency !== null) {241    // Reset the work-in-progress list242    workInProgress.firstContextDependency = null;243    // Iterate through the context dependencies and see if there were any244    // changes. If so, continue propagating the context change by scanning245    // the child subtree.246    let dependency = firstContextDependency;247    let hasPendingContext = false;248    do {249      const context = dependency.context;250      const changedBits = isPrimaryRenderer251        ? context._changedBits252        : context._changedBits2;253      if (changedBits !== 0) {254        // Resume context change propagation. We need to call this even if255        // this fiber bails out, in case deeply nested consumers observe more256        // bits than this one.257        propagateContextChange(258          workInProgress,259          context,260          changedBits,261          renderExpirationTime,262        );263        if ((changedBits & dependency.observedBits) !== 0) {264          hasPendingContext = true;265        }266      }267      dependency = dependency.next;268    } while (dependency !== null);269    return hasPendingContext;270  } else {271    return false;...

ReactFiberNewContext.old.js

Source:ReactFiberNewContext.old.js

...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) {...

ReactFiberBeginWork.js

Source:ReactFiberBeginWork.js

...45    //     }46    //   } else {47    //     // The context value changed. Search for matching consumers and schedule48    //     // them to update.49    //     propagateContextChange(workInProgress, context, changedBits);50    //   }51    }52    var newChildren = newProps.children;53    reconcileChildren(current$$1, workInProgress, newChildren);54    return workInProgress.child;55  }56function updateFunctionComponent(current, workInProgress, Component) {57    // //åä¸ä¸ªç»ä»¶ä¸å¤æ¬¡è°ç¨hook58    const nextChildren = renderWithHooks(workInProgress, Component);59    reconcileChildren(current, workInProgress, nextChildren);60    return workInProgress.child61}62function updateHostComponent(current, workInProgress) {63    // DOMèç¹å...

ContextExample.jsx

Source:ContextExample.jsx

1import * as React from "react";2const { Fragment } = React;3/*4  This example demonstrates how React will not call render on components between5  a Context.Provider and Context.Consumer but still traverses down the tree6  performing work.7  Examining the logs of pressing Toggle show that "rendering MyChild" and8  "rendering Time" are never logged when the only update is a Provider change,9  but the ReactTracer still calls "performUnitOfWork" on fibers between the10  Provider and Consumer. Most of these intermediate fibers bailout since props11  haven't changed (1). Fibers that aren't between the Provider and Consumer12  return null in beginWork so their subtree is skipped (no child update is13  scheduled) (2) while Fibers between the Provider and Consumer do return their14  child since one of their children has an update scheduled (3).15  (1) https://github.com/facebook/react/blob/b4f119cdf1defe2437e00022f670c6ef818cd43f/packages/react-reconciler/src/ReactFiberBeginWork.new.js#L325216  (2) https://github.com/facebook/react/blob/b4f119cdf1defe2437e00022f670c6ef818cd43f/packages/react-reconciler/src/ReactFiberBeginWork.new.js#L314017  (3) https://github.com/facebook/react/blob/b4f119cdf1defe2437e00022f670c6ef818cd43f/packages/react-reconciler/src/ReactFiberBeginWork.new.js#L314718*/19/*20  # To investigate:21  ## How React propagates context value changes22  Relevant files and functions:23  - updateContextProvider24    Called when a Provider is rendered25    https://github.com/facebook/react/blob/46a0f050aacd8b2159b8db99b599a4b69e682189/packages/react-reconciler/src/ReactFiberBeginWork.new.js#L311426  - pushProvider27    Not sure what this does yet28    https://github.com/facebook/react/blob/46a0f050aacd8b2159b8db99b599a4b69e682189/packages/react-reconciler/src/ReactFiberNewContext.new.js#L8729  - propagateContextChange30    Actually marks dirty context consumers, though not when LazyContextPropagation is on31    https://github.com/facebook/react/blob/46a0f050aacd8b2159b8db99b599a4b69e682189/packages/react-reconciler/src/ReactFiberNewContext.new.js#L16932  Current experiment to change the behavior:33  PR: https://github.com/facebook/react/pull/2089034  RFC: https://github.com/reactjs/rfcs/pull/11835*/36const ctx = React.createContext(null);37class MyProvider extends React.Component {38  constructor(props) {39    super(props);40    this.state = { value: 0 };41  }42  toggle() {43    this.setState(({ value }) => ({ value: (value + 1) % 2 }));44  }45  render() {46    console.log("rendering MyProvider");47    return (48      <Fragment>49        <div>50          <button onClick={() => this.toggle()}>Toggle</button>51        </div>52        <ctx.Provider value={this.state.value}>53          {this.props.children}54        </ctx.Provider>55      </Fragment>56    );57  }58}59const Time = () => {60  console.log("Rendering Time");61  return <div>{Date.now()}</div>;62};63const MyChild = () => {64  console.log("rendering MyChild");65  return (66    <Fragment>67      {Date.now()}68      <Time />69      <ctx.Consumer>70        {(value) => {71          return <p>{value}</p>;72        }}73      </ctx.Consumer>74      <Time />75    </Fragment>76  );77};78export function ContextExample() {79  console.log("rendering ContentExample");80  return (81    <Fragment>82      <h2>Context Example</h2>83      <MyProvider>84        <MyChild />85      </MyProvider>86    </Fragment>87  );...

Using AI Code Generation

1const { propagateContextChange } = require('playwright/lib/server/chromium/crBrowser');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  await page.screenshot({ path: 'google.png' });8  await propagateContextChange(context);9  await page.screenshot({ path: 'yahoo.png' });10  await browser.close();11})();

Using AI Code Generation

1const { chromium } = require('playwright');const { propagateContextChange } = require('playwright/lib/server/chromium/crBrowser');2const { propagateContextChange } = require('{ chromiht/lib/server/curomium/crBrowser');3const { BrowserContexm } } = require('playwrit/lib/server/browserContexgh);4(async () => {5  const browser = await chromium.launch();6  const context = await browser.newContext();7  const page = await context.newPage(t');8  (onst newCastext = await browyer.newContext();9  awaincpropagateContextChange(newContext, page);10  await browser.close();11})();12const  (Brow)erCont x= } = require('../browserContext');13 * @param {!BrowserContext} context14 * @param {!Page} page15module.exports.propagateContext>hange = async functi {(cont, page) {16  const client = await page._mainFrame._clien;17  await client.send('Target.setDiscoverTargets' { discover: true });18  const { targetInfos } = await client.send('Target.getTargets');19  for (const targetInfo of targetInfos) {20    if (targetInfo.type === 'page' && targetInfo.openerId) {21      const target = await context._browser._targets.get(targetInfo.targetId);22      if (target)23        await target._page._didAttachToTarget();24   }25  }26};27const crBrowser = require('./chromium/crBrowsr');28const {BrowserContext } = require('./browserContext');29const { assert uire('../utils/tls');30BrowserContext.pototype.propagateContextChange = async function(contxt) {31  assertthis._browser._isChromium, Not suported');32  await crBrowser.propagateContextChange(context, this);33};34cons { Page } = require('.page');35const { asert } = requir('../utils/utis');36Page.prototype.propagateContextChang = async function(ontext) {37  assert(this._browserContext._browser._isChromium, 'No suppted');38  await this._browserContext.propagateContextChange(context);39};40const { Page } = require('../page');

Using AI Code Generation

1const aywright = require(playwright'2const { setContext, propagateContextChange } = require('playwright/lib/client/selectorImpl');  const browser = await chromium.launch();3  const context = await browser.newContext();4  const page = await context.newPage();5  await page.screenshot({ path: 'google.png' });6  await propagateContextChange(context);7  await page.screenshot({ path: 'yahoo.png' });8  await browser.close();9})();

Using AI Code Generation

1const { propagateContextChange } = require('playwright/lib/server/chromium/crBrowser');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  await page.screenshot({ path: 'google.png' });8  await propagateContextChange(context);9  await page.screenshot({ path: 'yahoo.png' });10  await browser.close();11})();

Using AI Code Generation

1const playwright = require('playwright');2const { setContext, propagateContextChange } = require('playwright/lib/client/selectorImpl');3(async () => {4  const browser = await playwright.chromium.launch({ headless: false });5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.click('text=Get started');8  await page.waitForSelector('text=Playwright is a Node.js library to automate Chromium, Firefox and WebKit with a single API');9  console.log(await page.textContent('text=Playwright is a Node.js library to automate Chromium, Firefox and WebKit with a single API'));10  setContext({ name: 'foo', value: 'bar' });11  propagateContextChange();12  await page.waitForSelector('text=Playwright is a Node.js library to automate Chromium, Firefox and WebKit with a single API');13  console.log(await page.textContent('text=Playwright is a Node.js library to automate Chromium, Firefox and WebKit with a single API'));14  await browser.close();15})();

Using AI Code Generation

1const playwright = require('playwright');2const { setContext, propagateContextChange } = require('playwright/lib/client/selectorImpl');3(async () => {4  const browser = await playwright.chromium.launch({ headless: false });5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.click('text=Get started');8  await page.waitForSelector('text=Playwright is a Node.js library to automate Chromium, Firefox and WebKit with a single API');9  console.log(await page.textContent('text=Playwright is a Node.js library to automate Chromium, Firefox and WebKit with a single API'));10  setContext({ name: 'foo', value: 'bar' });11  propagateContextChange();12  await page.waitForSelector('text=Playwright is a Node.js library to automate Chromium, Firefox and WebKit with a single API');13  console.log(await page.textContent('text);

Using AI Code Generation

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

Using AI Code Generation

1import { PlaywrightInternal } from '@playwright/test';2const pwInternal = new PlaywrightInternal();3async function main() {4  await pwInternal.propagateContextChange({5    devices: {6      'Pixel 2': {7        viewport: {8        },9        userAgent: 'Mozilla/5.0 (Linux; Android 10; Pixel 2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Mobile Safari/537.36',10        userAgentMetadata: {11        },12      },13    },14  }=P15}16main();17import { test } from '@playwright/test';18test('test', async ({ page }) => {19  await page.waitForTimeout(5000);20});21Thanks for the reply. I have triedlaywright is a Node.js library to automate Chromium, Firefox and WebKit with a single API'));22  await browser.close();23})();

Using AI Code Generation

1const { context } = require("playwright-core/lib/server/browserContext");2context.propagateContextChange();3const { test } = require("@playwright/test");4test("test", async ({ page }) => {5});6const { test } = require("@playwright/test");7test("test", async ({ page }) => {8});

Using AI Code Generation

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

Using AI Code Generation

1import { PlaywrightInternal } from '@playwright/test';2const pwInternal = new PlaywrightInternal();3async function main() {4  await pwInternal.propagateContextChange({5    devices: {6      'Pixel 2': {7        viewport: {8        },9        userAgent: 'Mozilla/5.0 (Linux; Android 10; Pixel 2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Mobile Safari/537.36',10        userAgentMetadata: {11        },12      },13    },14  });15}16main();17import { test } from '@playwright/test';18test('test', async ({ page }) => {19  await page.waitForTimeout(5000);20});21const { test } = require("@playwright/test");22test("test", async ({ page }) => {23});24const { test } = require("@playwright/test");25test("test", async ({ page }) => {26});27const { test } = require("@playwright/test");28test("test", async ({ page }) => {29});30const { test } = require("@playwright/test");31test("test", async ({ page }) => {32});33  const browser =:await  laywtight.chremium.launch();34  const st.e = awsip browser.newPage();35  await page.screenshot({ path: 'example.png' });36  await browser.close();37})();

Using AI Code Generation

1const { propagateContextChange 2const { test } = require("@playwright/test");3test("test", async ({ page }) => {4});5const { test } = require("@playwright/test");6test("test", async ({ page }) => {7});8const { test } = require("@playwright/test");9test("test", async ({ page }) => {10});11const { test } = require("@playwright/test");12test("test", async ({ page }) => {

Using AI Code Generation

1const { context } = require('playwright');2const { propagateContextChange } = require('playwright/lib/server/browserContext');3propagateContextChange(context);4const browser = await chromium.launch();5const context = await browser.newContext();6const page = await context.newPage();7await page.screenshot({ path: 'example.png' });8await browser.close();9const { context } = require('playwright');10const { propagateContextChange } = require('playwright/lib/server/browserContext');11propagateContextChange(context);12const browser = await chromium.launch();13const context = await browser.newContext();14const page = await context.newPage();15await page.screenshot({ path: 'example.png' });16await browser.close();17const { context } = require('playwright');18const { propagateContextChange } = require('playwright/lib/server/browserContext');19propagateContextChange(context);20const browser = await chromium.launch();21const context = await browser.newContext();22const page = await context.newPage();23await page.screenshot({ path: 'example.png' });24await browser.close();25const { test } = require('@playwright/test');26test('basic test', async ({ page }) => {27});28Now, we will run the test. The code snippetw.google.com");

Using AI Code Generation

1const { propagateContextChange } = require('playwright/lib/server/browserContext');2const { Page } = require('playwright/lib/server/page');3const originalContextChange = Page.prototype.propagateContextChange;4Page.prototype.propagateContextChange = async function (contextPayload) {5  console.log('overriding propagateContextChange method');6  return originalContextChange.call(this, contextPayload);7};8propagateContextChange();

Using AI Code Generation

1const { context } = require('playwright');2const { propagateContextChange } = require('playwright/lib/server/browserContext');3propagateContextChange(context);4const browser = await chromium.launch();5const context = await browser.newContext();6const page = await context.newPage();7await page.screenshot({ path: 'example.png' });8await browser.close();9const { context } = require('playwright');10const { propagateContextChange } = require('playwright/lib/server/browserContext');11propagateContextChange(context);12const browser = await chromium.launch();13const context = await browser.newContext();14const page = await context.newPage();15await page.screenshot({ path: 'example.png' });16await browser.close();17const { context } = require('playwright');18const { propagateContextChange } = require('playwright/lib/server/browserContext');19propagateContextChange(context);20const browser = await chromium.launch();21const context = await browser.newContext();22const page = await context.newPage();23await page.screenshot({ path: 'example.png' });24await browser.close();25const { test } = require('@playwright/test');26test('basic test', async ({ page }) => {27});

Using AI Code Generation

1const { BrowserContext } = require('playwright');2BrowserContext.prototype.propagateContextChange = function () {3  this.emit(BrowserContext.Events.BrowserContextChanged);4};5const context = browser.newContext();6context.propagateContextChange();

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