How to use useFiber method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactChildFiber.new.js

Source:ReactChildFiber.new.js

...92        }93        return existingChildren94    }95    96    function useFiber(fiber, pendingProps) {97        const clone = createWorkInProgress(fiber, pendingProps)98        clone.index = 099        clone.sibling = null100        return clone101    }102    function placeChild(103        newFiber,104        lastPlacedIndex,105        newIndex,106    ) {107        newFiber.index = newIndex108        if (!shouldTrackSideEffects) {109            return lastPlacedIndex110        }111        const current = newFiber.alternate112        if (current !== null) {113            const oldIndex = current.index114            if (oldIndex < lastPlacedIndex) {115                newFiber.flags |= Placement116                return lastPlacedIndex117            } else {118                return oldIndex119            }120        } else {121            newFiber.flags |= Placement122            return lastPlacedIndex123        }124    }125    function placeSingleChild(126        newFiber,127    ) {128        if (shouldTrackSideEffects && newFiber.alternate === null) {129            newFiber.flags |= Placement130        }131        132        return newFiber133    }134    135    function updateTextNode(136        returnFiber,137        current, // oldFiber138        textContent,139        lanes,140    ) {141        if (current === null || current.tag !== HostText) {142            const created = createFiberFromText(textContent, returnFiber.mode, lanes)143            created.return = returnFiber144            return created145        } else {146            // Update147            const existing = useFiber(current, textContent)148            existing.return = returnFiber149            return existing150        }151    }152    153    function updateElement(154        returnFiber,155        current,156        element,157        lanes,158    ) {159        const elementType = element.type160    161        if (elementType === REACT_FRAGMENT_TYPE) {162            return updateFragment(163                returnFiber,164                current,165                element.props.children,166                lanes,167                element.key,168            )169        }170    171        if (current !== null) {172            if (173                current.elementType === elementType ||174                (enableLazyElements &&175                typeof elementType === 'object' &&176                elementType !== null &&177                elementType.$$typeof === REACT_LAZY_TYPE &&178                resolveLazy(elementType) === current.type)179            ) {180                const existing = useFiber(current, element.props)181                existing.ref = coerceRef(returnFiber, current, element)182                existing.return = returnFiber183                return existing184            }185        }186        187        // Insert188        const created = createFiberFromElement(element, returnFiber.mode, lanes)189        created.ref = coerceRef(returnFiber, current, element)190        created.return = returnFiber191        return created192    }193    194    function updatePortal(195        returnFiber,196        current,197        portal,198        lanes,199    ) {200        if (201            current === null ||202            current.tag !== HostPortal ||203            current.stateNode.containerInfo !== portal.containerInfo ||204            current.stateNode.implementation !== current.stateNode.implementation205        ) {206            // Insert207            const created = createFiberFromPortal(portal, returnFiber.mode, lanes)208            created.return = returnFiber209            return created210        } else {211            // Update212            const existing = useFiber(current, portal.children || [])213            existing.return = returnFiber214            return existing215        }216    }217    function updateFragment(218        returnFiber,219        current,220        fragment,221        lanes,222        key,223    ) {224        if (current === null || current.tag !== Fragment) {225            const created = createFiberFromFragment(226                fragment,227                returnFiber.mode,228                lanes,229                keys,230            )231            created.return = returnFiber232            return created233        } else {234            const existing = useFiber(current, fragment)235            existing.return = returnFiber236            return existing237        }238    }239    240    function updateSlot(241        returnFiber,242        oldFiber,243        newChild,244        lanes,245    ) {246        const key = oldFiber !== null ? oldFiber.key : null;247    248        if (typeof newChild === 'string' || typeof newChild === 'number') {249            // Text nodes don't have keys. If the previous node is implicitly keyed250            // we can continue to replace it without aborting even if it is not a text251            // node.252    253            // implicitly å«èçï¼éå¼ç254            if (key !== null) {255                return null256            }257            return updateTextNode(returnFiber, oldFiber, '' + newChild, lanes)258        }259    260        if (typeof newChild === 'object' && newChild !== null) {261            switch (newChild.$$typeof) {262                case REACT_ELEMENT_TYPE:263                    if (newChild.key === key) {264                        return updateElement(returnFiber, oldFiber, newChild, lanes)265                    } else {266                        return null267                    }268                case REACT_PORTAL_TYPE:269                    if (newChild.key === key) {270                        return updatePortal(returnFiber, oldFiber, newChild, lanes)271                    } else {272                        return null273                    }274                case REACT_LAZY_TYPE:275                    if (enableLazyElements) {276                        const payload = newChild._payload277                        const init = newChild._init278                        return updateSlot(returnFiber, oldFiber, init(payload), lanes)279                    }280            }281            if (isArray(newChild) || getIteratorFn(newChild)) {282                if (key !== null) {283                    return null;284                }285    286                return updateFragment(returnFiber, oldFiber, newChild, lanes, null)287            }288        }289    290        return null291    }292    function createChild(293        returnFiber,294        newChild,295        lanes,296    ) {297        if (typeof newChild === 'string' || typeof newChild === 'number') {298            const created = createFiberFromText(299                '' + newChild,300                returnFiber.mode,301                lanes302            )303            created.return = returnFiber304            return created305        }306        if (typeof newChild === 'object' && newChild !== null) {307            switch (newChild.$$typeof) {308                case REACT_ELEMENT_TYPE:309                    const created = createFiberFromElement(310                        newChild,311                        returnFiber.mode,312                        lanes,313                    )314                    created.ref = coerceRef(returnFiber, null, newChild)315                    created.return = returnFiber316                    return created317                case REACT_FRAGMENT_TYPE:318                    const created = createFiberFromFragment(319                        newChild,320                        returnFiber.mode,321                        lanes,322                    )323                    created.return = returnFiber324                    return created325                case REACT_LAZY_TYPE:326                    const payload = newChild._payload327                    const init = newChild._init328                    return createChild(returnFiber, init(payload), lanes)329            }330        }331        if (isArray(newChild) || getIterator(newChild)) {332            const created = createFiberFromFragment(333                newChild,334                returnFiber.mode,335                lanes,336                null337            )338            created.return = returnFiber339            return created340        }341        return null342    }343    function updateFromMap(344        existingChildren,345        returnFiber,346        newIdx,347        newChild,348        lanes,349    ) {350        if (typeof newChild === 'string' || typeof newChild === 'number') {351            const matchedFiber = existingChildren.get(newIdx) || null352            return updateTextNode(returnFiber, matchedFiber, '' + newChild, lanes)353        }354        if (typeof newChild === 'object' && newChild !== null) {355            const matchedFiber = existingChildren.get(356                newChild.key === null ? newIdx : newChild.key,357                ) || null358            359            switch (newChild.$$typeof) {360                case REACT_ELEMENT_TYPE:361                    return updateElement(returnFiber, matchedFiber, newChild, lanes)362                case REACT_PORTAL_TYPE:363                    return updatePortal(returnFiber, matchedFiber, newChild, lanes,)364                case REACT_LAZY_TYPE:365                    if (enableLazyElements) {366                        const payload = newChild._payload367                        const init = newChild._init368                        369                        return updateFromMap(370                            existingChildren,371                            returnFiber,372                            newIdx,373                            init(payload),374                            lanes,375                        )376                    }377            }378        }379        380        if (isArray(newChild) || getIterator(newChild)) {381            const matchedFiber = existingChildren.get(newIdx) || null382            return updateFragment(returnFiber, matchedFiber, newChild, lanes, null)383        }384        return null385    }386    387    function reconcileChildrenArray(388        returnFiber,389        currentFirstChild, // å¼å¤´ç oldChild 390        newChildren, // æ°ç children391        lanes, // è½¨è¿¹392    ) {393        let resultingFirstChild = null // è¿åç Child394        let previousNewFiber = null // ä¹åç newChild395    396        let oldFiber = currentFirstChild // å½åæä½ç oldChild397        let lastPlacedIndex = 0 // æåä¸æ¬¡æä½æ¿æ¢åç index398        let newIdx = 0399        let nextOldFiber = null400        for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) {401            if (oldFiber.index > newIdx) {402                nextOldFiber = oldFiber403                oldFiber = null404            } else {405                nextOldFiber = oldFiber.sibling406            }407            const newFiber = updateSlot(408                returnFiber,409                oldFiber,410                newChildren[newIdx],411                lanes412            )413            if (newFiber === null) {414                if (oldFiber === null) {415                    oldFiber = nextOldFiber416                }417    418                break419            }420            if (shouldTrackSideEffects) {421                if (oldFiber && newFiber.alternate === null) {422                    deleteChild(returnFiber, oldFiber)423                }424            }425            lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx)426            if (previousNewFiber === null) {427                resultingFirstChild = newFiber428            } else {429                previousNewFiber.sibling = newFiber430            }431            previousNewFiber = newFiber432            oldFiber = nextOldFiber433        }434    435        if (newIdx === newChildren.length) {436            deleteRemainingChildren(returnFiber, oldFiber)437            return resultingFirstChild438        }439        if (oldFiber === null) {440            for (; newIdx < newChildren.length; newIdx++) {441                const newFiber = createChild(returnFiber, newChildren[newIdx], lanes)442                if (newFiber === null) {443                    continue444                }445                lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx)446                if (previousNewFiber === null) {447                    resultingFirstChild = newFiber448                } else {449                    previousNewFiber.sibling = newFiber450                }451                previousNewFiber = newFiber452            }453            return resultingFirstChild454        }455    456        const existingChildren = mapRemainingChildren(returnFiber, oldFiber)457        for (; newIdx < newChildren.length; newIdx++) {458            const newFiber = updateFromMap(459                existingChildren,460                returnFiber,461                newIdx,462                newChildren[newIdx],463                lanes,464            )465            if (newFiber === null) {466                if (shouldTrackSideEffects) {467                    if (newFiber.alternate !== null) {468                        existingChildren.delete(newFiber.key === null ? newIdx : newFiber.key)469                    }470                }471            }472            lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx)473            if (previousNewFiber === null) {474                resultingFirstChild = newFiber475            } else {476                previousNewFiber.sibling = newFiber477            }478            previousNewFiber = newFiber479        }480    481        if (shouldTrackSideEffects) {482            existingChildren.forEach(child => deleteChild(returnFiber, child))483        }484    485        return resultingFirstChild486    }487    function reconcileChildrenIterator(488        returnFiber,489        currentFirstChild,490        newChildrenIterable,491        lanes,492    ) {493        const iteratorFn = getIteratorFn(newChildrenIterable)494        const newChildren = iteratorFn.call(newChildrenIterable)495        // ...496    }497    function reconcileSingleTextNode(498        returnFiber,499        currentFirstChild,500        textContent,501        lanes,502    ) {503        if (currentFirstChild !== null && currentFirstChild.tag === HostText) {504            deleteRemainingChildren(returnFiber, currentFirstChild.sibling)505            const existing = useFiber(currentFirstChild, textContent)506            existing.return = returnFiber507            return existing508        }509        deleteRemainingChildren(returnFiber, currentFirstChild)510        const created = createFiberFromText(textContent, returnFiber.mode, lanes)511        created.return = returnFiber512        return created513    }514    function reconcileSingleElement(515        returnFiber,516        currentFirstChild,517        element,518        lanes,519    ) {520        const key = element.key521        let child = currentFirstChild522        while (child !== null) {523            const elementType = element.type;524            if (child.key === key) {525                const elementType = element.type526                if (elementType === REACT_FRAGMENT_TYPE) {527                    if (child.tag === Fragment) {528                        deleteRemainingChildren(returnFiber, child.sibling)529                        const existing = useFiber(child, element.props.children)530                        existing.return = returnFiber531                        return existing532                    }533                } else {534                    if (535                        child.elementType === elementType ||536                        (537                            enableLazyElements &&538                            elementType !== null &&539                            element.$$typeof === REACT_LAZY_TYPE &&540                            resolveLazy(elementType).type === child.type541                        )542                    ) {543                        deleteRemainingChildren(returnFiber, child.sibling)544                        const existing = useFiber(child, element.props)545                        existing.ref = coerceRef(returnFiber, child, element)546                        existing.return = returnFiber547                        return existing548                    }549                }550                deleteRemainingChildren(returnFiber, child)551                break552            } else {553                deleteChild(returnFiber, child)   554            }555        }556        if (element.type === REACT_FRAGMENT_TYPE) {557            const created = createFiberFromFragment(558                element.props.children,559                returnFiber.mode,560                lanes,561                element.key,562            )563            created.return = returnFiber564            return created565        } else {566            const created = createFiberFromElement(567                element,568                returnFiber.mode,569                lanes,570            )571            created.ref = coerceRef(returnFiber, currentFirstChild, element)572            created.return = returnFiber573            return created574        }575    }576    function reconcileSinglePortal(577        returnFiber,578        currentFirstChild,579        portal,580        lanes,581    ) {582        const key = portal.key583        let child = currentFirstChild584        while (child !== null) {585            if (child.key === key) {586                if (587                    child.tag === HostPortal &&588                    child.statNode.containerInfo === portal.containerInfo &&589                    child.stateNode.implementation === portal.implementation590                ) {591                    deleteRemainingChildren(returnFiber, child.sibling)592                    const existing = useFiber(child, portal.children || [])593                    existing.return = returnFiber594                    return existing595                } else {596                    deleteRemainingChildren(returnFiber, child)597                    break598                }599            }600            child = child.sibling601        }602        const created = createFiberFromPortal(603            portal,604            returnFiber.mode,605            lanes,606        )...

ReactNativeFeatureFlags.js

Source:ReactNativeFeatureFlags.js

...16// When syncing React Renderer, make sure the feature flags are still compatible17// =============================================================================18var useFiber;19var ReactNativeFeatureFlags = {20  get useFiber(): boolean {21    if (useFiber == null) {22      useFiber = true;23      if (__DEV__) {24        require('Systrace').installReactHook(useFiber);25      }26    }27    return useFiber;28  },29  set useFiber(enabled: boolean): void {30    if (useFiber != null) {31      throw new Error(32        'Cannot set useFiber feature flag after it has been accessed. ' +33          'Please override it before requiring React.',34      );35    }36    useFiber = enabled;37    if (__DEV__) {38      require('Systrace').installReactHook(useFiber);39    }40  },41};...

ReactDOM.js

Source:ReactDOM.js

1/**2 * Copyright 2013-2015, Facebook, Inc.3 * All rights reserved.4 *5 * This source code is licensed under the BSD-style license found in the6 * LICENSE file in the root directory of this source tree. An additional grant7 * of patent rights can be found in the PATENTS file in the same directory.8 */9'use strict';10var ReactDOMFeatureFlags = require('ReactDOMFeatureFlags');11var useFiber = ReactDOMFeatureFlags.useFiber;12module.exports = useFiber13  ? require('ReactDOMFiber')...

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const fiber = await page._useFiber();6  await page.evaluate(() => {7    console.log('hello world');8  });9  await fiber.dispose();10  await browser.close();11})();12const { chromium } = require('playwright');13(async () => {14  const browser = await chromium.launch();15  const page = await browser.newPage();16  const fiber = await page._useFiber();17  await fiber.evaluate(() => {18    console.log('hello world');19  });20  await fiber.dispose();21  await browser.close();22})();23const { chromium } = require('playwright');24(async () => {25  const browser = await chromium.launch();26  const page = await browser.newPage();27  const fiber = await page._useFiber();28  await fiber.evaluate(() => {29    console.log('hello world');30  });31  await fiber.dispose();32  await browser.close();33})();34const { chromium } = require('playwright');35(async () => {36  const browser = await chromium.launch();37  const page = await browser.newPage();38  const fiber = await page._useFiber();39  await fiber.evaluate(() => {40    console.log('hello world');41  });42  await fiber.dispose();43  await browser.close();44})();45const { chromium } = require('playwright');46(async () => {47  const browser = await chromium.launch();48  const page = await browser.newPage();49  const fiber = await page._useFiber();50  await fiber.evaluate(() => {

Using AI Code Generation

1const { useFiber } = require('playwright/lib/server/fiber');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  useFiber(() => {8    page.on('console', (msg) => {9      console.log('PAGE LOG:', msg.text());10    });11  });12  await page.evaluate(() => console.log(`url is ${location.href}`));13  await browser.close();14})();

Using AI Code Generation

1const { useFiber } = require('playwright-internal');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const page = await browser.newPage();6  const fiber = await useFiber(page);7  await fiber.waitForSelector('.navbar__inner');8  await fiber.screenshot({ path: 'screenshot.png' });9  await browser.close();10})();11    at Object.<anonymous> (C:\Users\karan\test.js:11:12)12    at Module._compile (internal/modules/cjs/loader.js:1138:30)13    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)14    at Module.load (internal/modules/cjs/loader.js:986:32)15    at Function.Module._load (internal/modules/cjs/loader.js:879:14)16    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)

Using AI Code Generation

1const { useFiber } = require('playwright/lib/fiber.js');2useFiber();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: 'google.png' });9  await browser.close();10})();11const { useFiber } = require('playwright/lib/fiber.js');12useFiber();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: 'google.png' });19  await browser.close();20})();21const { useFiber } = require('playwright/lib/fiber.js');22useFiber();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: 'google.png' });29  await browser.close();30})();

Using AI Code Generation

1const { useFiber } = require('playwright/lib/server/fiber');2useFiber();3const { useFiber } = require('playwright/lib/server/fiber');4useFiber();5const { useFiber } = require('playwright/lib/server/fiber');6useFiber();7const { useFiber } = require('playwright/lib/server/fiber');8useFiber();9const { useFiber } = require('playwright/lib/server/fiber');10useFiber();11const { useFiber } = require('playwright/lib/server/fiber');12useFiber();13const { useFiber } = require('playwright/lib/server/fiber');14useFiber();15const { useFiber } = require('playwright/lib/server/fiber');16useFiber();17const { useFiber } = require('playwright/lib/server/fiber');18useFiber();19const { useFiber } = require('playwright/lib/server/fiber');20useFiber();21const { useFiber } = require('playwright/lib/server/fiber');22useFiber();23const { useFiber } = require('playwright/lib/server/fiber');24useFiber();25const { useFiber } = require('playwright/lib/server/fiber');26useFiber();27const { useFiber } = require('playwright/lib/server/fiber');28useFiber();29const { useFiber } = require('playwright/lib/server/fiber');30useFiber();

Using AI Code Generation

1const { useFiber } = require('playwright/lib/fiber');2useFiber();3const { chromium } = require('playwright');4(async () => {5  const browser = await chromium.launch();6  const page = await browser.newPage();7  await page.screenshot({ path: 'example.png' });8  await browser.close();9})();10const { chromium } = require('playwright');11(async () => {12  const browser = await chromium.launch();13  const page = await browser.newPage();14  await page.screenshot({ path: 'example.png' });15  await browser.close();16})();17const { chromium } = require('playwright');18(async () => {19  const browser = await chromium.launch();20  const page = await browser.newPage();21  await page.screenshot({ path: 'example.png' });22  await browser.close();23})();24const { chromium } = require('playwright');25(async () => {26  const browser = await chromium.launch();27  const page = await browser.newPage();28  await page.screenshot({ path: 'example.png' });29  await browser.close();30})();31const { chromium } = require('playwright');32(async () => {33  const browser = await chromium.launch();34  const page = await browser.newPage();35  await page.screenshot({ path: 'example.png' });36  await browser.close();37})();38const { chromium } = require('playwright');39(async () => {40  const browser = await chromium.launch();41  const page = await browser.newPage();42  await page.screenshot({ path: 'example.png' });43  await browser.close();44})();45const { chromium } = require('playwright');46(async () => {47  const browser = await chromium.launch();48  const page = await browser.newPage();

Using AI Code Generation

1const { useFiber } = require('playwright/lib/server/fiber');2useFiber();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})();

Using AI Code Generation

1const { useFiber } = require('playwright/lib/fiber');2const Fiber = require('fibers');3const playwright = require('playwright');4(async () => {5  useFiber(Fiber);6  const browser = await playwright.chromium.launch();7  const context = await browser.newContext();8  const page = await context.newPage();9  await page.click('text=Get Started');10  await browser.close();11})();

Using AI Code Generation

1const { useFiber } = require('playwright');2const Fiber = require('fibers');3(async () => {4  Fiber(() => {5    useFiber();6    const browser = await chromium.launch();7    const context = await browser.newContext();8    const page = await context.newPage();9    await page.screenshot({ path: 'example.png' });10    await browser.close();11  }).run();12})();

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