How to use findChildHostInstancesForFiberShallowly method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberHotReloading.new.js

Source: ReactFiberHotReloading.new.js Github

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...385 fiber ,386 hostInstances ,387) {388 if (__DEV__) {389 const foundHostInstances = findChildHostInstancesForFiberShallowly(390 fiber,391 hostInstances,392 );393 if (foundHostInstances) {394 return;395 }396 /​/​ If we didn't find any host children, fallback to closest host parent.397 let node = fiber;398 while (true) {399 switch (node.tag) {400 case HostComponent:401 hostInstances.add(node.stateNode);402 return;403 case HostPortal:404 hostInstances.add(node.stateNode.containerInfo);405 return;406 case HostRoot:407 hostInstances.add(node.stateNode.containerInfo);408 return;409 }410 if (node.return === null) {411 throw new Error('Expected to reach root first.');412 }413 node = node.return;414 }415 }416}417function findChildHostInstancesForFiberShallowly(418 fiber ,419 hostInstances ,420) {421 if (__DEV__) {422 let node = fiber;423 let foundHostInstances = false;424 while (true) {425 if (node.tag === HostComponent) {426 /​/​ We got a match.427 foundHostInstances = true;428 hostInstances.add(node.stateNode);429 /​/​ There may still be more, so keep searching.430 } else if (node.child !== null) {431 node.child.return = node;...

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ReactFiberHotReloading.js

Source: ReactFiberHotReloading.js Github

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...385 fiber: Fiber,386 hostInstances: Set<Instance>,387): void {388 if (true) {389 const foundHostInstances = findChildHostInstancesForFiberShallowly(390 fiber,391 hostInstances,392 );393 if (foundHostInstances) {394 return;395 }396 /​/​ If we didn't find any host children, fallback to closest host parent.397 let node = fiber;398 while (true) {399 switch (node.tag) {400 case HostComponent:401 hostInstances.add(node.stateNode);402 return;403 case HostPortal:404 hostInstances.add(node.stateNode.containerInfo);405 return;406 case HostRoot:407 hostInstances.add(node.stateNode.containerInfo);408 return;409 }410 if (node.return === null) {411 throw new Error('Expected to reach root first.');412 }413 node = node.return;414 }415 }416}417function findChildHostInstancesForFiberShallowly(418 fiber: Fiber,419 hostInstances: Set<Instance>,420): boolean {421 if (true) {422 let node: Fiber = fiber;423 let foundHostInstances = false;424 while (true) {425 if (node.tag === HostComponent) {426 /​/​ We got a match.427 foundHostInstances = true;428 hostInstances.add(node.stateNode);429 /​/​ There may still be more, so keep searching.430 } else if (node.child !== null) {431 node.child.return = node;...

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ReactFiberHotReloading.old.js

Source: ReactFiberHotReloading.old.js Github

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...270 }271 }272 function findHostInstancesForFiberShallowly(fiber, hostInstances) {273 {274 var foundHostInstances = findChildHostInstancesForFiberShallowly(fiber, hostInstances);275 if (foundHostInstances) {276 return;277 } /​/​ If we didn't find any host children, fallback to closest host parent.278 var node = fiber;279 while (true) {280 switch (node.tag) {281 case HostComponent:282 hostInstances.add(node.stateNode);283 return;284 case HostPortal:285 hostInstances.add(node.stateNode.containerInfo);286 return;287 case HostRoot:288 hostInstances.add(node.stateNode.containerInfo);289 return;290 }291 if (node.return === null) {292 throw new Error('Expected to reach root first.');293 }294 node = node.return;295 }296 }297 }298 function findChildHostInstancesForFiberShallowly(fiber, hostInstances) {299 {300 var node = fiber;301 var foundHostInstances = false;302 while (true) {303 if (node.tag === HostComponent) {304 /​/​ We got a match.305 foundHostInstances = true;306 hostInstances.add(node.stateNode); /​/​ There may still be more, so keep searching.307 } else if (node.child !== null) {308 node.child.return = node;309 node = node.child;310 continue;311 }312 if (node === fiber) {...

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Using AI Code Generation

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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.waitForSelector('text=Docs');7 const elementHandle = await page.$('text=Docs');8 const childHostInstances = await elementHandle.evaluate(element => element._delegate.findChildHostInstancesForFiberShallowly());9 console.log(childHostInstances);10 await browser.close();11})();

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Using AI Code Generation

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1const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement.js');2const childHostInstances = findChildHostInstancesForFiberShallowly(fiber);3const { getFiberForNode } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement.js');4const fiber = getFiberForNode(document.querySelector('.child'));5const { getFiberRoot } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement.js');6const fiberRoot = getFiberRoot(document.querySelector('.child'));7const { getFiberRoots } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement.js');8const fiberRoots = getFiberRoots(document.querySelector('.child'));9const { getFiberRootsForPage } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement.js');10const fiberRoots = getFiberRootsForPage(page);11const { getHostInstanceForFiber } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement.js');12const hostInstance = getHostInstanceForFiber(fiber);13const { getOwnerInstance } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement.js');14const ownerInstance = getOwnerInstance(document.querySelector('.child'));15const { getOwnerFiber } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement.js');16const ownerFiber = getOwnerFiber(document.querySelector('.child'));17const { getRendererPackageName } = require('playwright/​lib/​server/​supplements/​recorder/​recorderSupplement.js');18const rendererPackageName = getRendererPackageName(document.querySelector('.child'));

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Using AI Code Generation

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1const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​dom.js');2const { Page } = require('playwright/​lib/​server/​page.js');3const { ElementHandle } = require('playwright/​lib/​server/​dom.js');4async function getElementHandle(page, selector) {5 const jsHandle = await page.evaluateHandle(selector => document.querySelector(selector), selector);6 return ElementHandle.from(page, jsHandle);7}8async function getChildHostInstancesForFiber(page, selector) {9 const elementHandle = await getElementHandle(page, selector);10 const fiber = await elementHandle._page._delegate._getFiberForElementHandle(elementHandle);11 const childHostInstances = await findChildHostInstancesForFiberShallowly(fiber);12 return childHostInstances;13}14(async () => {15 const page = await browser.newPage();16 const childHostInstances = await getChildHostInstancesForFiber(page, 'body');17 console.log(childHostInstances);18})();

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Using AI Code Generation

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1const { findChildHostInstancesForFiberShallowly } = require('playwright');2const { getRootHostInstanceForFiber } = require('react-dom');3const rootHostInstance = getRootHostInstanceForFiber(reactFiber);4const childHostInstances = findChildHostInstancesForFiberShallowly(5);6const { findChildHostInstancesForFiberDeeply } = require('playwright');7const { getRootHostInstanceForFiber } = require('react-dom');8const rootHostInstance = getRootHostInstanceForFiber(reactFiber);9const childHostInstances = findChildHostInstancesForFiberDeeply(10);11const { findHostInstanceForFiber } = require('playwright');12const { getRootHostInstanceForFiber } = require('react-dom');13const rootHostInstance = getRootHostInstanceForFiber(reactFiber);14const hostInstance = findHostInstanceForFiber(rootHostInstance, reactFiber);

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Using AI Code Generation

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1const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​inspector/​inspector.js');2const { helper } = require('playwright/​lib/​helper.js');3const { Page } = require('playwright/​lib/​page.js');4const { Frame } = require('playwright/​lib/​frameManager.js');5const { ElementHandle } = require('playwright/​lib/​JSHandle.js');6(async () => {7 const browser = await chromium.launch();8 const context = await browser.newContext();9 const page = await context.newPage();10 const frame = page.mainFrame();11 const elementHandle = await frame.$('input');12 console.log(elementHandle);13 const hostInstances = await findChildHostInstancesForFiberShallowly(elementHandle);14 console.log(hostInstances);15 await browser.close();16})();17ElementHandle {18 _context: BrowserContext {19 _browser: Browser {20 _connection: Connection { _events: [Object], _eventsCount: 2 },21 },22 _options: {23 userAgent: 'Mozilla/​5.0 (X11; Linux x86_64) AppleWebKit/​537.36 (KHTML, like Gecko) HeadlessChrome/​87.0.4280.66 Safari/​537.36',24 },25 _timeoutSettings: TimeoutSettings { _defaultTimeout: 30000 },26 _permissions: Map {},

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Using AI Code Generation

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1const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​dom.js');2const { getFiberForHostInstance } = require('playwright/​lib/​server/​dom.js');3const { getFiberRoot } = require('playwright/​lib/​server/​dom.js');4const { getOwnerDocument } = require('playwright/​lib/​server/​dom.js');5const { getOwnerWindow } = require('playwright/​lib/​server/​dom.js');6const { getOrCreateFiber } = require('playwright/​lib/​server/​dom.js');7const { getOrCreateFiberForHostInstance } = require('playwright/​lib/​server/​dom.js');8const { getOrCreateFiberRoot } = require('playwright/​lib/​server/​dom.js');9const { getOrCreateOwnerDocument } = require('playwright/​lib/​server/​dom.js');10const { getOrCreateOwnerWindow } = require('playwright/​lib/​server/​dom.js');11const { getOrCreateParentFiber } = require('playwright/​lib/​server/​dom.js');12const { getOrCreateParentFiberForHostInstance } = require('playwright/​lib/​server/​dom.js');13const { getParentFiber } = require('playwright/​lib/​server/​dom.js');14const { getParentFiberForHostInstance } = require('playwright/​lib/​server/​dom.js');15const { getRootHostContainer } = require('playwright/​lib/​server/​dom.js');16const { getRootHostContext } = require('playwright/​lib/​server/​dom.js');17const { getRootHostInstance } = require('playwright/​lib/​server/​dom.js');18const { getRootHostInstanceForContainer } = require('playwright/​lib/​server/​dom.js');19const { getRootHostInstanceForContainerAndProps } = require('playwright/​lib/​server/​dom.js');20const { getRootHostInstanceForContainerAndPropsOrContext } = require('playwright/​lib/​server/​dom.js');21const { getRootHostInstanceForContainerOrContext } = require('playwright/​lib/​server/​dom.js');22const { getRootHostInstanceForContainerOrContextAndProps } = require('playwright/​lib/​server/​dom.js');23const { getRootHostInstanceForContainerOrContextAndPropsOrState } = require('playwright/​lib/​server/​dom.js');24const { getRootHostInstanceForContainerOrContextOrState } = require('playwright/​lib/​server/​dom.js');25const { getRootHostInstanceForContainerOrState } = require('playwright/​lib/​server/​dom.js');26const { getRootHostInstanceForContainerOrStateAndProps } = require('

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Using AI Code Generation

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1const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​dom.js');2const { getHostForFiber } = require('react-reconciler/​reflection.js');3const { getFiberCurrentPropsFromNode } = require('react-dom/​cjs/​react-dom.development.js');4const fiber = getFiberCurrentPropsFromNode(document.querySelector('div'));5const hostInstance = getHostForFiber(fiber);6const childHostInstances = findChildHostInstancesForFiberShallowly(fiber, hostInstance);7const { findChildHostInstancesForFiber } = require('playwright/​lib/​server/​dom.js');8const { getHostForFiber } = require('react-reconciler/​reflection.js');9const { getFiberCurrentPropsFromNode } = require('react-dom/​cjs/​react-dom.development.js');10const fiber = getFiberCurrentPropsFromNode(document.querySelector('div'));11const hostInstance = getHostForFiber(fiber);12const childHostInstances = findChildHostInstancesForFiber(fiber, hostInstance);13const { findHostInstanceWithWarning } = require('playwright/​lib/​server/​dom.js');14const { getFiberCurrentPropsFromNode } = require('react-dom/​cjs/​react-dom.development.js');15const fiber = getFiberCurrentPropsFromNode(document.querySelector('div'));16const hostInstance = findHostInstanceWithWarning(fiber, 'testComponentName');

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Using AI Code Generation

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1const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​dom')2const { getRootHostInstanceForFiber } = require('playwright/​lib/​server/​dom')3const { getFiber } = require('playwright/​lib/​server/​dom')4const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​dom')5const { getRootHostInstanceForFiber } = require('playwright/​lib/​server/​dom')6const { getFiber } = require('playwright/​lib/​server/​dom')7const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​dom')8const { getRootHostInstanceForFiber } = require('playwright/​lib/​server/​dom')9const { getFiber } = require('playwright/​lib/​server/​dom')10const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​dom')11const { getRootHostInstanceForFiber } = require('playwright/​lib/​server/​dom')12const { getFiber } = require('playwright/​lib/​server/​dom')13const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​dom')14const { getRootHostInstanceForFiber } = require('playwright/​lib/​server/​dom')15const { getFiber } = require('playwright/​lib/​server/​dom')16const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​dom')17const { getRootHostInstanceForFiber } = require('playwright/​lib/​server/​dom')18const { getFiber } = require('playwright/​lib/​server/​dom')19const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​dom')20const { getRootHostInstanceForFiber } = require('playwright/​lib/​server/​dom')21const { getFiber } = require('playwright/​lib/​server/​dom')22const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​dom')23const { getRootHostInstanceForFiber } = require('playwright/​lib/​server/​dom')24const { getFiber } = require('playwright/​lib/​server/​dom')25const { findChildHostInstancesForFiberShallowly } = require('playwright/​lib/​server/​dom')26const { getRootHostInstanceForFiber } = require('playwright/​lib/​server/​dom')27const { getFiber } = require

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StackOverFlow community discussions

Questions
Discussion

Jest + Playwright - Test callbacks of event-based DOM library

firefox browser does not start in playwright

Is it possible to get the selector from a locator object in playwright?

How to run a list of test suites in a single file concurrently in jest?

Running Playwright in Azure Function

firefox browser does not start in playwright

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})
https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

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