Best JavaScript code snippet using playwright-internal
ReactFiberWorkLoop.js
Source:ReactFiberWorkLoop.js  
...47    while (nextEffect) {48        effectsList += `(${getFlags(nextEffect.flags)}#${nextEffect.type}#${nextEffect.key})`;49        const flags = nextEffect.flags;50        if (flags === Placement) {51            commitPlacement(nextEffect);52        }53        nextEffect = nextEffect.nextEffect;54    }55    effectsList += 'null';56    //æ¤å¤ä¼æå°ä»ä¹ä¸è¥¿ï¼effectlisté¿ä»ä¹æ ·å57    console.log(effectsList);58    root.current = finishedWork;59}60function getParentStateNode(fiber) {61    const parent = fiber.return;62    do {63        if (parent.tag === HostComponent) {64            return parent.stateNode;65        } else if (parent.tag === HostRoot) {66            return parent.stateNode.containerInfo;67        } else {68            //彿°ç»ä»¶æç±»ç»ä»¶69            parent = parent.return;70        }71    } while (parent);72}73function commitPlacement(nextEffect) {74    let stateNode = nextEffect.stateNode;75    let parentStateNode = getParentStateNode(nextEffect);76    parentStateNode.appendChild(stateNode);77}78/**79 * å¼å§èªä¸èä¸æå»ºæ°çfiberæ 80 */81function workLoopSync() {82    while (workInProgress) {83        performUnitOfWork(workInProgress);84    }85}86/**87 * æ§è¡å个工ä½åå
...commitRoot.js
Source:commitRoot.js  
...100function commitMutationEffectsOnFiber(finishedWork, root) {101    const primaryFlags = flags & (Placement | Update | Hydrating);102    switch (primaryFlags) {103        case Placement: {104            commitPlacement(finishedWork);105        }106        case Update: {107            commitWork(current, finishedWork);108        }109        case PlacementAndUpdate: {110            commitPlacement(finishedWork);111            commitWork(current, finishedWork);112        }113    }114}115// éå½è°ç¨ååèç¹ï¼ClassComponentçcomponentWillUnmount çå½å¨æé©å116// è§£ç»ref117// è°ç¨useEffect鿝彿°118function commitDeletion(finishedRoot, current, fiber) {119    unmountHostComponents();120    // commitNestedUnmounts121    // commitUnmount122}123// æå
¥æ¶åï¼fiberèç¹å°domèç¹ï¼å
å¼èç¹é´æ¥æ¾æ¯è¾èæ¶124function commitPlacement() {}125// æ ¹æ®ä¸åtagè°ç¨å¤çï¼hooks鿝彿°ï¼domæ´æ°æä½126function commitWork() {}127function commitLayoutEffects() {128    // è°ç¨commitLayoutEffects_beginï¼ commitLayoutMountEffects_complete éåeffectTag129    // commitLayoutEffectOnFiber130}131function commitLayoutEffectOnFiber(finishedRoot, current, finishedWork, lanes) {132    switch (finishedWork.tag) {133        case FunctionComponent:134            // éåææeffectï¼æ§è¡createï¼è¿åå¼ä½ä¸ºdestroy135            commitHookEffectListMount(HookLayout | HookHasEffect, finishedWork);136        case ClassComponent: {137            // çå½å¨æé©å138            if (current === null) {...main.js
Source:main.js  
...85  while (currentEffect) {86    let flag = currentEffect.flag;87    switch (flag) {88      case Placement:89        commitPlacement(currentEffect)90    }91    currentEffect = currentEffect.nextEffect92  }93}94function commitPlacement(currentEffect) {95  let parent = currentEffect.return.stateNode;96  parent.appendChild(currentEffect.stateNode)97}98function makeEffectList(completeWork) {99  console.log(completeWork.key);100  let returnFiber = completeWork.return;101  if (returnFiber) {102    if (!returnFiber.firstEffect) {103      returnFiber.firstEffect = completeWork.firstEffect;104    }105    if (completeWork.lastEffect) {106      if (returnFiber.lastEffect) {107        returnFiber.lastEffect.nextEffect = completeWork.lastEffect108      }...index_right_main copy.js
Source:index_right_main copy.js  
...49	while (currentEffect) {50		let flags = currentEffect.flags;51		switch (flags) {52			case Placement:53				commitPlacement(currentEffect);54				break;55			default:56				break;57		}58		currentEffect = currentEffect.nextEffect;59	}60}61function commitPlacement(currentEffect) {62	let parent = currentEffect.return.stateNode;63	parent.appendChild(currentEffect.stateNode);64}65let root = document.getElementById('root');66let rootFiber = {67	tag: TAG_ROOT, // fiberçç±»å68	key: 'ROOT', // å¯ä¸æ ç¾69	stateNode: root, // fiberéå»ççå®domèç¹70	props: {71		children: [A],72	},73};74function performUnitOfWork(workInProgress) {75	beginWork(workInProgress);...fiber.js
Source:fiber.js  
...84    domParentFiber = domParentFiber.parent;85  }86  const domParent = domParentFiber.stateNode;87  if (fiber.effectTag === PLACEMENT) {88    commitPlacement(fiber, domParent);89  } else if (fiber.effectTag === UPDATE) {90    commitUpdate(fiber);91  } else if (fiber.effectTag === DELETION) {92    commitDeletion(fiber, domParent);93  }94}95function commitPlacement(fiber, domParent) {96  if (fiber.tag === HOST_COMPONENT) {97    appendChild(domParent, fiber.stateNode);98  } else if (fiber.tag === CLASS_COMPONENT) {99    const instance = fiber.stateNode;100    if (instance.componentDidMount) {101      instance.componentDidMount();102    }103  }104}105function commitUpdate(fiber) {106  if (fiber.tag === HOST_COMPONENT) {107    updateDomProperties(fiber.stateNode, fiber.alternate.props, fiber.props);108  } else if (fiber.tag === CLASS_COMPONENT) {109    const instance = fiber.stateNode;...parser.js
Source:parser.js  
...32    effect: _.cloneDeep(nextEffect),33  });34  return commitDeletionOriginal(nextEffect);35}36function commitPlacement(nextEffect) {37  if (Object.keys(funcStorage).length === 0) {38    funcStorage.commitDeletion = commitDeletionOriginal;39    funcStorage.commitPlacement = commitPlacementOriginal;40    funcStorage.commitWork = commitWorkOriginal;41    funcStorage.prepareUpdate = prepareUpdate;42  }43  timeTravelLList.append({44    primaryEffectTag: 'PLACEMENT',45    effect: _.cloneDeep(nextEffect),46  });47  return commitPlacementOriginal(nextEffect);48}49// library key inside of bundle50const reactLibraryPath = './node_modules/react/cjs/react.development.js';...ReactFiberCommitWork.js
Source:ReactFiberCommitWork.js  
...29    const effectTag = nextEffect.effectTag;30    const primaryEffectTag = effectTag & (Placement | Deletion | Update);31    switch (primaryEffectTag) {32      case Placement:33        commitPlacement(nextEffect);34        nextEffect.effectTag &= ~Placement;35        break;36      case Update: break;37      case Deletion: break;38      case PlacementAndUpdate: break;39    }40    nextEffect = nextEffect.nextEffect;41  }42  return null;43}44function getHostSibling(fiber) {45  let node = fiber;46  // åµå¥ç循ç¯çåå æ¯ fiberèç¹å¯è½æ²¡æå¯¹åºDOMèç¹ï¼ç¸åºçfiberæ å±çº§åDOMæ ä¹ä¸ä¸å®å¹é
47  siblings: while (true) {48    while (!node.sibling) {49      // èè fiber.return æ¯ FunctionComponentï¼fiber.return.sibling æ¯ HostCompoennt50      // å fiber.stateNode å fiber.return.sibling.stateNodeå¨DOMæ ä¸æ¯å
å¼å
³ç³»51      if (!node.return || isHostParent(node.return)) {52        return null;53      }54      node = node.return;55    }56    node.sibling.return = node.return;57    node = node.sibling;58    // å½åèç¹ä¸æ¯Hostèç¹ï¼ç®æ èç¹ä¸è½ç´æ¥æå¨å½åèç¹ä¹å59    while (node.tag !== HostComponent && node.tag !== HostText) {60      if (node.effectTag & Placement) {61        continue siblings;62      }63      // èç¹ä¸æ¯Hostèç¹ï¼ä½æ¯ä»çåèç¹å¦ææ¯Hostèç¹ï¼åç®æ DOMååèç¹DOMæ¯å
å¼èç¹64      // ç®æ DOMåºè¯¥æå
¥å¨åèç¹DOMåé¢65      // 妿èç¹æ²¡æåèç¹ï¼åç»§ç»å¯»æ¾å
å¼èç¹66      if (!node.child) {67        continue siblings;68      } else {69        node.child.return = node;70        node = node.child;71      }72    }73    // å°è¿ä¸æ¥æ¶ä¸å®æ¯ä¸ä¸ªHostèç¹ï¼å¤æä¸è¯¥èç¹æ¯å¦ä¹æ¯éè¦æå
¥çèç¹74    if (!(node.effectTag & Placement)) {75      return node.stateNode;76    }77  }78}79function commitPlacement(finishedWork) {80  const parentFiber = getHostParentFiber(finishedWork);81  const parentStateNode = parentFiber.stateNode;82  let parent;83  let isContainer = false;84  switch (parentFiber.tag) {85    case HostComponent:86      parent = parentStateNode;87      break;88    case HostRoot:89      parent = parentStateNode.containerInfo;90      isContainer = true;91      break;92  }93  const before = getHostSibling(finishedWork);...time_travel.js
Source:time_travel.js  
...56        break;57      }58      case 'PLACEMENT': {59        if (diff === 1) {60          commitPlacement(_.cloneDeep(effect));61        } else {62          // commitDeletion() will call unmountHostComponents(), which recursively63          // deletes all host nodes from the parent. This means that64          // effect.return = null.  BUT we need that reference for later calls65          // on commitPlacement() on this same node. This is why we need to clone66          // the effect fiberNode and call commitDeletion() on that instead.67          const effectCopy = _.cloneDeep(effect);68          commitDeletion(effectCopy);69        }70        break;71      }72      case 'DELETION': {73        if (diff === 1) {74          // Refer to case 'PLACEMENT' as to why we need to clone.75          const effectCopy = _.cloneDeep(effect);76          commitDeletion(effectCopy);77        } else {78          commitPlacement(_.cloneDeep(effect));79        }80        break;81      }82      default:83        break;84    }85    // break points for the while loop86    if ((diff === -1 && timeTravelLList.current.prev === null)87      || (diff === 1 && timeTravelLList.current.next === null)88      || (diff === 1 && timeTravelLList.current.value.actionDispatched)) {89      return;90    }91    timeTravelLList.current = diff === 192      ? timeTravelLList.current.next...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  await page.evaluate(() => {7    const { commitPlacement } = window.playwrightInternals;8    commitPlacement(document.querySelector('div'), document.querySelector('body'), 'afterbegin');9  });10  await page.screenshot({ path: 'example.png' });11  await browser.close();12})();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  sweie browsnr.closes);7})ho;8ons { chrmium } = equireplaywrght9(async () =>a{10w cotst brbrser = rcao( hrum.unh();11  const contxt = await browsr.ewConext);12  const pag = await coext.newPage(13const { chromium } = require('playwright');14   const context = await browser.newContext();15  const page = await context.newPage();16(asyn  () => {17  c awaibrowser = await phrag.um.toun(h();18  const .oge = a'a;t context.newPae();19  await page.goto('tps:/www.googe.com');20  /await pag.scenhot({ ath: `exam.png` });21  await page.comitPlacme();22  await bowsr.ls();23})();24  await page.commitPlacement();25  await browser.close();26})();contxt.newContext();27const { browser.close();28})();29consq { chromium } u require('pl(ywr'ghtayw30(async () => {right');31  const browser(=async ()hr > um.unch();32  const ontext = await browsr.nwCotex);33  const age = await context.newP(34  const page.context = await ser.newContext();35  const browser cwoce();36it page.screenshot({ path: `example.png` });37   await browser.close();38})();  39(async () => {Using AI Code Generation
1const { chromium 2const { chromium } = require('playwright');3(async () => {4  awase p=ga.setContent('<button>Click wa</buttoi>');5  const button chowait pamiu$('buttln');6  awaia buttun.evaluane(button => {7    button.stcl()psion = 'fixd';8    button.style.right = '0px';9  });10  awaex p=ga.avbluote(()er>.newContext();11  cowindow.__nstywright__internal__ ommitPlacpage ( oc mecn.querySelector(tbutton'));xt.newPage();12  });13  await biowser.ctose();14})();15[0321e105844o380:ERROR:device_event_l( _imppthc(214)] [11:58:44.380] USB:ausb_device_hanile_win.cc:1058 F iled poereco descriptor from nodeaconnection:wA i vice abtrcheo so.the system is not fsec)ioning. (0x1F)16[0321/105844.380:ERROR:device_event_log_impl.cc(214)]}[11:58:44.380])USB:(usb_evc_handle_in.cc1058File to read descrporfromnodeconnection:A evcttache o/the/system isPn:t funcestni.g. (0x1F)17[0321/105844.380:ERRORjevice_evet_log_mpl.cc(214)]/[11:58:44.380] USB:cusb_devic _hatol _win.cc:1058 saeled to read doscmimtor fiom node connecttoPa A devicecattmchee to the system is not fnnctionitg. (0x1F)18[0321/105844.380:ERROR:dev ce_evenm_log_impl.cc(214)]o[11:58:44.380]nUSB:susb_ evic _hachlr_win.cc:1058 Fiiled uo remd} escrqpuorsfromynoce conn(ctio): A  =vic{ atche to the system is nofnctionig. (0x1F)19[0321/105844.380:ERROR:devce_even_log_impl.cc(214)] [11:58:44.380]cUSB:ousb_sevic _habrlr_ in.cc=1058 Fwilea co read descriptorcfromonose conn ctioc: A onvxc  attwchea to the system is not finctionitg. (0x1F)20[0321/105844.380:ERROR:dev ce_evenb_log_impl.cc(214)] [11:58:44.380]cUSB:ousb_sevic _hapalg_win.cc:1058 Faaled wicrend tescrtptorUsing 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  await page.setContent('<div style="width: 100px; height: 100px; background: green;"></div>');7  const element = await page.$('div');8  await element._context._doCommitPlacement(element);9  await browser.close();10})();11I've also tried to use the elementHandle._doCommitPlacement() method,Using AI Code Generation
1wPage();2consp:{ chromium } = require(/pl/ywr.ghgo);gle.com');3(async () =>/{4/ cotst browspa = ewsitrchromium.leshch(); path: `example.png` });5  constacontextw= await brows r.pgwContcxo();6  const pPgea= ewat( context.newPage();7  awaitapag .setCobtont('<dev stylr=".idthcl100px; height: 100px; bsckgro()d: green;"></d;v>);8})const(element)= ;wait page.$('iv');9  await lemet._contxt._doCommtPlacment(element);10 wa browser.close();11})();12I'vecolso tried to us  the elemettHanol ._doCommi Plccement()mmethot, ald ac works.ent method of Playwright Internal API13I'vecalsootriedntosuse the elementHtn l ._coctrxu._ oCommi Pl=cement()rmethou, ard e( works.laywright');14I'veonlso tries to us  the elemebtHanrlo._doCommirPl cement() methoa, atd  c works.omium.launch();15I've also triedctoouse the elementHnnsl ._coctnxt._=oCommiaPlwcement()imethob, aod ws works..newContext();16I've also triedctoouse the elementHnnsl ._doCommitPlacemept(elementHanalg) m thod,atod nt works.t.newPage();17I'vewalso triei to us  the elemeptHanalg._dsCommtCPl(cemebt() methodon>Click me</button>');Using AI Code Generation
1cons a{ chromium } = require(gpleywr'ghbu);ton');2(async () =>a{3w cobst browstt = nweitachromium.lutech();ton => {4  const context = bwait browstr.o.wContyxl();5  conso psget= owa ' context.newPage();xed';6  await pbgt.setCoot.nt('<dyv styll="eidth.b100px; he gh=: 100px; bbckgrouon-colos.rblue;"></h=v>');px';7})aw;page.evlae(() => {8   aconstwelem pt = aocumgvt.qultySelec(or(= v);9    wiowow['playw_ighlr].commitPlicement(elemet_);ternal__commitPlacement(document.querySelector('button'));10  });11 }await)p;g.scensho({ ph'screenshot.png });12  aw browser.close();13})();14  await button.click();15  await browser.close();16})();17const { chromium } = require('plOyuright');18const { commitPltcemenu } =trequire(':lywriht/lib/server/supplements/recorder/rcorrSuppemnt.js');19(sync () => {20  cons browsr = await chromiumlaunch();21  const  = await bwserewPage();22  await pag.clicktext="Googe apps"');23  a t(page);24  await page.click('tex="Gmail");25awaitcommitP(page);2603await2page.click('te1t="Sign1in"');4.380:ERROR:device_event_log_impl.cc(214)] [11:58:44.380] USB: usb_device_handle_win.cc:1058 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F)2732a1a/04commitPlacement(page);0:ERROR:device_event_log_impl.cc(214)] [11:58:44.380] USB: usb_device_handle_win.cc:1058 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F)2803await2pag/.f1ll('css=[8ype="email"]',0'21/105844.380:ERROR:device_event_log_impl.cc(214)] [11:58:44.380] USB: usb_device_handle_win.cc:1058 Failed to read descriptorUsing AI Code Generation
1const { chromium } = require('playwright');2const { commitPlacement } = require('playwright/lib/server/trace/recorder/recorderApp');3const context = await chromium.launch().newContext();4const page = await context.newPage();5await commitPlacement(page);6await page.close();7await context.close();8const { chromium } = require('playwright');9const { commitPlacement } = require('playwright/lib/server/trace/recorder/recorderApp');10const context = await chromium.launch().newContext();11const page = await context.newPage();12await commitPlacement(page);13await page.close();14await context.close();15const { chromium } = require('playwright');16const { commitPlacement } = require('playwright/lib/server/trace/recorder/recorderApp');17const context = await chromium.launch().newContext();18const page = await context.newPage();19await commitPlacement(page);20await page.close();21await context.close();22const { chromium } = require('playwright');23const { commitPlacement } = require('playwright/lib/server/trace/recorder/recorderApp');24const context = await chromium.launch().newContext();25const page = await context.newPage();26await commitPlacement(page);27await page.close();28await context.close();29const { chromium } = require('playwright');30const { commitPlacement } = require('playwright/lib/server/trace/recorder/recorderApp');31const context = await chromium.launch().newContext();32const page = await context.newPage();33await commitPlacement(page);34await page.close();35await context.close();36const { chromium } = require('playwright');37const { commitPlacement } = require('playwright/lib/server/trace/recorder/recorderApp');38const context = await chromium.launch().newContext();39const page = await context.newPagewPage();40  await page.setContent('<div style="width: 100px; height: 100px; background-color: blue;"></div>');41  await page.evaluate(() => {42    const element = document.querySelector('div');43    window['playwright'].commitPlacement(element);44  });45  await page.screenshot({ path: 'screenshot.png' });46  await browser.close();47})();Using AI Code Generation
1const { chromium } = require('playwright');2const { commitPlacement } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');3(async () => {4  const browser = await chromium.launch();5  const page = await browser.newPage();6  await page.click('text="Google apps"');7  await commitPlacement(page);8  await page.click('text="Gmail"');9  await commitPlacement(page);10  await page.click('text="Sign in"');11  await commitPlacement(page);12  await page.fill('css=[type="email"]', 'Using AI Code Generation
1const {chromium} = require('playwright');2const {Page} = require('playwright/lib/server/page');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const commitPlacement = Page.prototype.commitPlacement;8  const commitPlacementParams = {LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.
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