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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, // 轨迹392 ) {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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