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How to use getFirstHydratableChild method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberHydrationContext.new.js

Source:ReactFiberHydrationContext.new.js

...52  if (!supportsHydration) {53    return false;54  }55  const parentInstance = fiber.stateNode.containerInfo;56  nextHydratableInstance = getFirstHydratableChild(parentInstance);57  hydrationParentFiber = fiber;58  isHydrating = true;59  return true;60}61function reenterHydrationStateFromDehydratedSuspenseInstance(62  fiber: Fiber,63  suspenseInstance: SuspenseInstance,64): boolean {65  if (!supportsHydration) {66    return false;67  }68  nextHydratableInstance = getNextHydratableSibling(suspenseInstance);69  popToNextHostParent(fiber);70  isHydrating = true;71  return true;72}73function deleteHydratableInstance(74  returnFiber: Fiber,75  instance: HydratableInstance,76) {77  const childToDelete = createFiberFromHostInstanceForDeletion();78  childToDelete.stateNode = instance;79  childToDelete.return = returnFiber;80  const deletions = returnFiber.deletions;81  if (deletions === null) {82    returnFiber.deletions = [childToDelete];83    // TODO (effects) Rename this to better reflect its new usage (e.g. ChildDeletions)84    returnFiber.flags |= Deletion;85  } else {86    deletions.push(childToDelete);87  }88}89function insertNonHydratedInstance(returnFiber: Fiber, fiber: Fiber) {90  fiber.flags = (fiber.flags & ~Hydrating) | Placement;91}92function tryHydrate(fiber, nextInstance) {93  switch (fiber.tag) {94    case HostComponent: {95      const type = fiber.type;96      const props = fiber.pendingProps;97      const instance = canHydrateInstance(nextInstance, type, props);98      if (instance !== null) {99        fiber.stateNode = (instance: Instance);100        return true;101      }102      return false;103    }104    case HostText: {105      const text = fiber.pendingProps;106      const textInstance = canHydrateTextInstance(nextInstance, text);107      if (textInstance !== null) {108        fiber.stateNode = (textInstance: TextInstance);109        return true;110      }111      return false;112    }113    case SuspenseComponent: {114      if (enableSuspenseServerRenderer) {115        const suspenseInstance: null | SuspenseInstance = canHydrateSuspenseInstance(116          nextInstance,117        );118        if (suspenseInstance !== null) {119          const suspenseState: SuspenseState = {120            dehydrated: suspenseInstance,121            retryLane: OffscreenLane,122          };123          fiber.memoizedState = suspenseState;124          // Store the dehydrated fragment as a child fiber.125          // This simplifies the code for getHostSibling and deleting nodes,126          // since it doesn't have to consider all Suspense boundaries and127          // check if they're dehydrated ones or not.128          const dehydratedFragment = createFiberFromDehydratedFragment(129            suspenseInstance,130          );131          dehydratedFragment.return = fiber;132          fiber.child = dehydratedFragment;133          return true;134        }135      }136      return false;137    }138    default:139      return false;140  }141}142function tryToClaimNextHydratableInstance(fiber: Fiber): void {143  if (!isHydrating) {144    return;145  }146  let nextInstance = nextHydratableInstance;147  if (!nextInstance) {148    // Nothing to hydrate. Make it an insertion.149    insertNonHydratedInstance((hydrationParentFiber: any), fiber);150    isHydrating = false;151    hydrationParentFiber = fiber;152    return;153  }154  const firstAttemptedInstance = nextInstance;155  if (!tryHydrate(fiber, nextInstance)) {156    // If we can't hydrate this instance let's try the next one.157    // We use this as a heuristic. It's based on intuition and not data so it158    // might be flawed or unnecessary.159    nextInstance = getNextHydratableSibling(firstAttemptedInstance);160    if (!nextInstance || !tryHydrate(fiber, nextInstance)) {161      // Nothing to hydrate. Make it an insertion.162      insertNonHydratedInstance((hydrationParentFiber: any), fiber);163      isHydrating = false;164      hydrationParentFiber = fiber;165      return;166    }167    // We matched the next one, we'll now assume that the first one was168    // superfluous and we'll delete it. Since we can't eagerly delete it169    // we'll have to schedule a deletion. To do that, this node needs a dummy170    // fiber associated with it.171    deleteHydratableInstance(172      (hydrationParentFiber: any),173      firstAttemptedInstance,174    );175  }176  hydrationParentFiber = fiber;177  nextHydratableInstance = getFirstHydratableChild((nextInstance: any));178}179function prepareToHydrateHostInstance(180  fiber: Fiber,181  rootContainerInstance: Container,182  hostContext: HostContext,183): boolean {184  if (!supportsHydration) {185    invariant(186      false,187      'Expected prepareToHydrateHostInstance() to never be called. ' +188        'This error is likely caused by a bug in React. Please file an issue.',189    );190  }191  const instance: Instance = fiber.stateNode;...

ReactFiberHydrationContext.js

Source:ReactFiberHydrationContext.js

...20	if (!supportsHydration) {21		return false;22	}23	const parentInstance = fiber.stateNode.containerInfo;24	nextHydratableInstance = getFirstHydratableChild(parentInstance);25	hydrationParentFiber = fiber;26	isHydrating = true;27	return true;28}29function deleteHydratableInstance(returnFiber, instance) {30	const childToDelete = createFiberFromHostInstanceForDeletion();31	childToDelete.stateNode = instance;32	childToDelete.return = returnFiber;33	childToDelete.effectTag = Deletion;34	// This might seem like it belongs on progressedFirstDeletion. However,35	// these children are not part of the reconciliation list of children.36	// Even if we abort and rereconcile the children, that will try to hydrate37	// again and the nodes are still in the host tree so these will be38	// recreated.39	if (returnFiber.lastEffect !== null) {40		returnFiber.lastEffect.nextEffect = childToDelete;41		returnFiber.lastEffect = childToDelete;42	} else {43		returnFiber.firstEffect = returnFiber.lastEffect = childToDelete;44	}45}46function insertNonHydratedInstance(returnFiber, fiber) {47	fiber.effectTag |= Placement;48}49function tryHydrate(fiber, nextInstance) {50	switch (fiber.tag) {51		case HostComponent: {52			const type = fiber.type;53			const props = fiber.pendingProps;54			const instance = canHydrateInstance(nextInstance, type, props);55			if (instance !== null) {56				fiber.stateNode = instance;57				return true;58			}59			return false;60		}61		case HostText: {62			const text = fiber.pendingProps;63			const textInstance = canHydrateTextInstance(nextInstance, text);64			if (textInstance !== null) {65				fiber.stateNode = textInstance;66				return true;67			}68			return false;69		}70		default:71			return false;72	}73}74function tryToClaimNextHydratableInstance(fiber) {75	if (!isHydrating) {76		return;77	}78	let nextInstance = nextHydratableInstance;79	if (!nextInstance) {80		// Nothing to hydrate. Make it an insertion.81		insertNonHydratedInstance((hydrationParentFiber: any), fiber);82		isHydrating = false;83		hydrationParentFiber = fiber;84		return;85	}86	const firstAttemptedInstance = nextInstance;87	if (!tryHydrate(fiber, nextInstance)) {88		// If we can't hydrate this instance let's try the next one.89		// We use this as a heuristic. It's based on intuition and not data so it90		// might be flawed or unnecessary.91		nextInstance = getNextHydratableSibling(firstAttemptedInstance);92		if (!nextInstance || !tryHydrate(fiber, nextInstance)) {93			// Nothing to hydrate. Make it an insertion.94			insertNonHydratedInstance((hydrationParentFiber), fiber);95			isHydrating = false;96			hydrationParentFiber = fiber;97			return;98		}99		// We matched the next one, we'll now assume that the first one was100		// superfluous and we'll delete it. Since we can't eagerly delete it101		// we'll have to schedule a deletion. To do that, this node needs a dummy102		// fiber associated with it.103		deleteHydratableInstance((hydrationParentFiber), firstAttemptedInstance);104	}105	hydrationParentFiber = fiber;106	nextHydratableInstance = getFirstHydratableChild((nextInstance));107}108function prepareToHydrateHostInstance(fiber, rootContainerInstance, hostContext) {109	const instance = fiber.stateNode;110	const updatePayload = hydrateInstance(111		instance,112		fiber.type,113		fiber.memoizedProps,114		rootContainerInstance,115		hostContext,116		fiber117	);118	// TODO: Type this specific to this type of component.119	fiber.updateQueue = (updatePayload);120	// If the update payload indicates that there is a change or if there...

HostConfigWithNoHydration.js

Source:HostConfigWithNoHydration.js

1/**2 * Copyright (c) Facebook, Inc. and its affiliates.3 *4 * This source code is licensed under the MIT license found in the5 * LICENSE file in the root directory of the React source tree.6 *7 * @flow8 */9import invariant from 'invariant';10// Renderers that don't support hydration11// can re-export everything from this module.12function shim(...args: any) {13  invariant(14    false,15    'The current renderer does not support hydration. ' +16      'This error is likely caused by a bug in React. ' +17      'Please file an issue.',18  );19}20// Hydration (when unsupported)21export type SuspenseInstance = mixed;22export const supportsHydration = false;23export const canHydrateInstance = shim;24export const canHydrateTextInstance = shim;25export const canHydrateSuspenseInstance = shim;26export const isSuspenseInstancePending = shim;27export const isSuspenseInstanceFallback = shim;28export const registerSuspenseInstanceRetry = shim;29export const getNextHydratableSibling = shim;30export const getFirstHydratableChild = shim;31export const hydrateInstance = shim;32export const hydrateTextInstance = shim;33export const getNextHydratableInstanceAfterSuspenseInstance = shim;34export const clearSuspenseBoundary = shim;35export const clearSuspenseBoundaryFromContainer = shim;36export const didNotMatchHydratedContainerTextInstance = shim;37export const didNotMatchHydratedTextInstance = shim;38export const didNotHydrateContainerInstance = shim;39export const didNotHydrateInstance = shim;40export const didNotFindHydratableContainerInstance = shim;41export const didNotFindHydratableContainerTextInstance = shim;42export const didNotFindHydratableContainerSuspenseInstance = shim;43export const didNotFindHydratableInstance = shim;44export const didNotFindHydratableTextInstance = shim;...

hydrations.js

Source:hydrations.js

1import { emptyFnc } from '../utils';2export const canHydrateInstance = emptyFnc('canHydrateInstance');3export const canHydrateTextInstance = emptyFnc('canHydrateTextInstance');4export const getNextHydratableSibling = emptyFnc('getNextHydratableSibling');5export const getFirstHydratableChild = emptyFnc('getFirstHydratableChild');6export const hydrateInstance = emptyFnc('hydrateInstance');7export const hydrateTextInstance = emptyFnc('hydrateTextInstance');8export const didNotMatchHydratedContainerTextInstance = emptyFnc('didNotMatchHydratedContainerTextInstance');9export const didNotMatchHydratedTextInstance = emptyFnc('didNotMatchHydratedTextInstance');10export const didNotHydrateContainerInstance = emptyFnc('didNotHydrateContainerInstance');11export const didNotHydrateInstance = emptyFnc('didNotHydrateInstance');12export const didNotFindHydratableContainerInstance = emptyFnc('didNotFindHydratableContainerInstance');13export const didNotFindHydratableContainerTextInstance = emptyFnc('didNotFindHydratableContainerTextInstance');14export const didNotFindHydratableInstance = emptyFnc('didNotFindHydratableInstance');...

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  const elementHandle = page._delegate.getFirstHydratableChild();7  console.log(elementHandle);8  await browser.close();9})();

Using AI Code Generation

1const { getFirstHydratableChild } = require('playwright/lib/server/dom.js');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const element = await page.$('body');8  const firstHydratableChild = await getFirstHydratableChild(element);9  console.log(firstHydratableChild);10  await browser.close();11})();

Using AI Code Generation

1const { getFirstHydratableChild } = require('@playwright/test/lib/server/dom');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.setContent(`<div id="parent">8  </div>`);9  const parent = await page.$('#parent');10  const child1 = await page.$('#child1');11  const child2 = await page.$('#child2');12  const firstHydratableChild = await getFirstHydratableChild(parent);13  console.log(firstHydratableChild._element);14  await browser.close();15})();

Using AI Code Generation

1const { getFirstHydratableChild } = require('playwright/lib/server/dom.js');2const { getFirstHydratableChild } = require('playwright/lib/server/dom.js');3const { chromium } = require('playwright');4(async () => {5  const browser = await chromium.launch();6  const context = await browser.newContext();7  const page = await context.newPage();8  await page.screenshot({ path: `example.png` });9  await browser.close();10})();11const { getFirstHydratableChild } = require('playwright/lib/server/dom.js');12const { getFirstHydratableChild } = require('playwright/lib/server/dom.js');13const { chromium } = require('playwright');14(async () => {15  const browser = await chromium.launch();16  const context = await browser.newContext();17  const page = await context.newPage();18  await page.screenshot({ path: `example.png` });19  await browser.close();20})();21const { getFirstHydratableChild } = require('playwright/lib/server/dom.js');22const { getFirstHydratableChild } = require('playwright/lib/server/dom.js');23const { chromium } = require('playwright');24(async () => {25  const browser = await chromium.launch();26  const context = await browser.newContext();27  const page = await context.newPage();28  await page.screenshot({ path: `example.png` });29  await browser.close();30})();31const { getFirstHydratableChild } = require('playwright/lib/server/dom.js');32const { getFirstHydratableChild } = require('playwright/lib/server/dom

Using AI Code Generation

1const { getFirstHydratableChild } = require('@playwright/test/lib/server/domSnapshot');2const { createPage } = require('@playwright/test/lib/server/page');3const { createFrame } = require('@playwright/test/lib/server/frames');4const { createExecutionContext } = require('@playwright/test/lib/server/frames');5const { createJSHandle } = require('@playwright/test/lib/server/jsHandle');6const { createElementHandle } = require('@playwright/test/lib/server/elementHandler');7const { createJSHandleDispatcher } = require('@playwright/test/lib/server/dispatchers/jsHandleDispatcher');8const { createElementHandleDispatcher } = require('@playwright/test/lib/server/dispatchers/elementHandleDispatcher');9const { createRootDispatcher } = require('@playwright/test/lib/server/dispatchers/elementHandleDispatcher');10const page = createPage();11const frame = createFrame(page, 'frameId', 'frameUrl');12const context = createExecutionContext(frame);13const jsHandle = createJSHandle(context, 'object', 'objectId');14const elementHandle = createElementHandle(context, 'element', 'elementId');15const jsHandleDispatcher = createJSHandleDispatcher(jsHandle);16const elementHandleDispatcher = createElementHandleDispatcher(elementHandle);17const rootDispatcher = createRootDispatcher(page);18(async () => {19  const result = await getFirstHydratableChild(rootDispatcher);20  console.log(result);21})();22const firstChild = await page.$('body > *:first-child')23const firstChild = await page.$('body > *:first-child')24const firstChild = await page.$('body > *:first-child')

Using AI Code Generation

1const { getFirstHydratableChild } = require('playwright/lib/server/dom.js');2const { dom } = require('playwright/lib/server/dom.js');3const { parse } = require('playwright/lib/server/parse5.js');4const { createTestServer } = require('playwright/lib/utils/testserver/');5const { test } = require('playwright/lib/utils/testrunner/');6const { expect } = require('playwright/lib/utils/testrunner/');7const { createTestState } = require('playwright/lib/utils/testrunner/');8const { createTestFixtures } = require('playwright/lib/utils/testrunner/');9const { createTestFixture } = require('playwright/lib/utils/testrunner/');10const { createTestWorker } = require('playwright/lib/utils/testrunner/');11test('should return first hydratable child', async () => {12  const { page } = await createTestState();13  await page.setContent(`14  `);15  const container = page.locator('#container');16  let firstChild = await getFirstHydratableChild(container);17  expect(firstChild).toBe('1');18  await page.evaluate(() => {19    const container = document.querySelector('#container');20    container.removeChild(container.firstChild);21  });22  firstChild = await getFirstHydratableChild(container);23  expect(firstChild).toBe('2');24});25test('should return first hydratable child with text content', async () => {26  const { page } = await createTestState();27  await page.setContent(`28  `);29  const container = page.locator('#container');30  const firstChild = await getFirstHydratableChild(container);31  expect(firstChild).toBe('1');32});33test('should return first hydratable child with text content and element', async () => {34  const { page } = await createTestState();35  await page.setContent(`36  `);37  const container = page.locator('#container');38  await page.evaluate(() =>

Using AI Code Generation

1const { getFirstHydratableChild } = require('playwright/lib/server/dom.js');2const { chromium } = require('playwright');3(async () => {4const browser = await chromium.launch();5const context = await browser.newContext();6const page = await context.newPage();7const elementHandle = await page.$('html');8const firstChild = await getFirstHydratableChild(elementHandle);9console.log(firstChild);10await browser.close();11})();12ElementHandle {13  _channel: Connection {14    _events: [Object: null prototype] {},15    _callbacks: Map(0) {},16    _objects: Map(2) { [Object], [Object] },17    _sessions: Map(1) { [Object] => [Object] },18    _pendingSessions: Map(0) {},19  },20  _initializer: {21    objectId: '{"injectedScriptId":1,"id":1}',22    preview: {23    }24  },25  _context: BrowserContext {26  },

Using AI Code Generation

1const { getFirstHydratableChild } = require('playwright/lib/server/dom.js');2const { parse } = require('playwright/lib/server/common/html.js');3`;4const dom = parse(html);5const firstChild = getFirstHydratableChild(dom, dom);6console.log(firstChild);

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