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How to use findLastContentRow method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberBeginWork.new.js

Source:ReactFiberBeginWork.new.js

...2321    node.sibling.return = node.return;2322    node = node.sibling;2323  }2324}2325function findLastContentRow(firstChild: null | Fiber): null | Fiber {2326  // This is going to find the last row among these children that is already2327  // showing content on the screen, as opposed to being in fallback state or2328  // new. If a row has multiple Suspense boundaries, any of them being in the2329  // fallback state, counts as the whole row being in a fallback state.2330  // Note that the "rows" will be workInProgress, but any nested children2331  // will still be current since we haven't rendered them yet. The mounted2332  // order may not be the same as the new order. We use the new order.2333  let row = firstChild;2334  let lastContentRow: null | Fiber = null;2335  while (row !== null) {2336    const currentRow = row.alternate;2337    // New rows can't be content rows.2338    if (currentRow !== null && findFirstSuspended(currentRow) === null) {2339      lastContentRow = row;2340    }2341    row = row.sibling;2342  }2343  return lastContentRow;2344}2345type SuspenseListRevealOrder = 'forwards' | 'backwards' | 'together' | void;2346function validateRevealOrder(revealOrder: SuspenseListRevealOrder) {2347  if (__DEV__) {2348    if (2349      revealOrder !== undefined &&2350      revealOrder !== 'forwards' &&2351      revealOrder !== 'backwards' &&2352      revealOrder !== 'together' &&2353      !didWarnAboutRevealOrder[revealOrder]2354    ) {2355      didWarnAboutRevealOrder[revealOrder] = true;2356      if (typeof revealOrder === 'string') {2357        switch (revealOrder.toLowerCase()) {2358          case 'together':2359          case 'forwards':2360          case 'backwards': {2361            console.error(2362              '"%s" is not a valid value for revealOrder on <SuspenseList />. ' +2363                'Use lowercase "%s" instead.',2364              revealOrder,2365              revealOrder.toLowerCase(),2366            );2367            break;2368          }2369          case 'forward':2370          case 'backward': {2371            console.error(2372              '"%s" is not a valid value for revealOrder on <SuspenseList />. ' +2373                'React uses the -s suffix in the spelling. Use "%ss" instead.',2374              revealOrder,2375              revealOrder.toLowerCase(),2376            );2377            break;2378          }2379          default:2380            console.error(2381              '"%s" is not a supported revealOrder on <SuspenseList />. ' +2382                'Did you mean "together", "forwards" or "backwards"?',2383              revealOrder,2384            );2385            break;2386        }2387      } else {2388        console.error(2389          '%s is not a supported value for revealOrder on <SuspenseList />. ' +2390            'Did you mean "together", "forwards" or "backwards"?',2391          revealOrder,2392        );2393      }2394    }2395  }2396}2397function validateTailOptions(2398  tailMode: SuspenseListTailMode,2399  revealOrder: SuspenseListRevealOrder,2400) {2401  if (__DEV__) {2402    if (tailMode !== undefined && !didWarnAboutTailOptions[tailMode]) {2403      if (tailMode !== 'collapsed' && tailMode !== 'hidden') {2404        didWarnAboutTailOptions[tailMode] = true;2405        console.error(2406          '"%s" is not a supported value for tail on <SuspenseList />. ' +2407            'Did you mean "collapsed" or "hidden"?',2408          tailMode,2409        );2410      } else if (revealOrder !== 'forwards' && revealOrder !== 'backwards') {2411        didWarnAboutTailOptions[tailMode] = true;2412        console.error(2413          '<SuspenseList tail="%s" /> is only valid if revealOrder is ' +2414            '"forwards" or "backwards". ' +2415            'Did you mean to specify revealOrder="forwards"?',2416          tailMode,2417        );2418      }2419    }2420  }2421}2422function validateSuspenseListNestedChild(childSlot: mixed, index: number) {2423  if (__DEV__) {2424    const isArray = Array.isArray(childSlot);2425    const isIterable =2426      !isArray && typeof getIteratorFn(childSlot) === 'function';2427    if (isArray || isIterable) {2428      const type = isArray ? 'array' : 'iterable';2429      console.error(2430        'A nested %s was passed to row #%s in <SuspenseList />. Wrap it in ' +2431          'an additional SuspenseList to configure its revealOrder: ' +2432          '<SuspenseList revealOrder=...> ... ' +2433          '<SuspenseList revealOrder=...>{%s}</SuspenseList> ... ' +2434          '</SuspenseList>',2435        type,2436        index,2437        type,2438      );2439      return false;2440    }2441  }2442  return true;2443}2444function validateSuspenseListChildren(2445  children: mixed,2446  revealOrder: SuspenseListRevealOrder,2447) {2448  if (__DEV__) {2449    if (2450      (revealOrder === 'forwards' || revealOrder === 'backwards') &&2451      children !== undefined &&2452      children !== null &&2453      children !== false2454    ) {2455      if (Array.isArray(children)) {2456        for (let i = 0; i < children.length; i++) {2457          if (!validateSuspenseListNestedChild(children[i], i)) {2458            return;2459          }2460        }2461      } else {2462        const iteratorFn = getIteratorFn(children);2463        if (typeof iteratorFn === 'function') {2464          const childrenIterator = iteratorFn.call(children);2465          if (childrenIterator) {2466            let step = childrenIterator.next();2467            let i = 0;2468            for (; !step.done; step = childrenIterator.next()) {2469              if (!validateSuspenseListNestedChild(step.value, i)) {2470                return;2471              }2472              i++;2473            }2474          }2475        } else {2476          console.error(2477            'A single row was passed to a <SuspenseList revealOrder="%s" />. ' +2478              'This is not useful since it needs multiple rows. ' +2479              'Did you mean to pass multiple children or an array?',2480            revealOrder,2481          );2482        }2483      }2484    }2485  }2486}2487function initSuspenseListRenderState(2488  workInProgress: Fiber,2489  isBackwards: boolean,2490  tail: null | Fiber,2491  lastContentRow: null | Fiber,2492  tailMode: SuspenseListTailMode,2493): void {2494  const renderState: null | SuspenseListRenderState =2495    workInProgress.memoizedState;2496  if (renderState === null) {2497    workInProgress.memoizedState = ({2498      isBackwards: isBackwards,2499      rendering: null,2500      renderingStartTime: 0,2501      last: lastContentRow,2502      tail: tail,2503      tailMode: tailMode,2504    }: SuspenseListRenderState);2505  } else {2506    // We can reuse the existing object from previous renders.2507    renderState.isBackwards = isBackwards;2508    renderState.rendering = null;2509    renderState.renderingStartTime = 0;2510    renderState.last = lastContentRow;2511    renderState.tail = tail;2512    renderState.tailMode = tailMode;2513  }2514}2515// This can end up rendering this component multiple passes.2516// The first pass splits the children fibers into two sets. A head and tail.2517// We first render the head. If anything is in fallback state, we do another2518// pass through beginWork to rerender all children (including the tail) with2519// the force suspend context. If the first render didn't have anything in2520// in fallback state. Then we render each row in the tail one-by-one.2521// That happens in the completeWork phase without going back to beginWork.2522function updateSuspenseListComponent(2523  current: Fiber | null,2524  workInProgress: Fiber,2525  renderLanes: Lanes,2526) {2527  const nextProps = workInProgress.pendingProps;2528  const revealOrder: SuspenseListRevealOrder = nextProps.revealOrder;2529  const tailMode: SuspenseListTailMode = nextProps.tail;2530  const newChildren = nextProps.children;2531  validateRevealOrder(revealOrder);2532  validateTailOptions(tailMode, revealOrder);2533  validateSuspenseListChildren(newChildren, revealOrder);2534  reconcileChildren(current, workInProgress, newChildren, renderLanes);2535  let suspenseContext: SuspenseContext = suspenseStackCursor.current;2536  const shouldForceFallback = hasSuspenseContext(2537    suspenseContext,2538    (ForceSuspenseFallback: SuspenseContext),2539  );2540  if (shouldForceFallback) {2541    suspenseContext = setShallowSuspenseContext(2542      suspenseContext,2543      ForceSuspenseFallback,2544    );2545    workInProgress.flags |= DidCapture;2546  } else {2547    const didSuspendBefore =2548      current !== null && (current.flags & DidCapture) !== NoFlags;2549    if (didSuspendBefore) {2550      // If we previously forced a fallback, we need to schedule work2551      // on any nested boundaries to let them know to try to render2552      // again. This is the same as context updating.2553      propagateSuspenseContextChange(2554        workInProgress,2555        workInProgress.child,2556        renderLanes,2557      );2558    }2559    suspenseContext = setDefaultShallowSuspenseContext(suspenseContext);2560  }2561  pushSuspenseContext(workInProgress, suspenseContext);2562  if ((workInProgress.mode & BlockingMode) === NoMode) {2563    // In legacy mode, SuspenseList doesn't work so we just2564    // use make it a noop by treating it as the default revealOrder.2565    workInProgress.memoizedState = null;2566  } else {2567    switch (revealOrder) {2568      case 'forwards': {2569        const lastContentRow = findLastContentRow(workInProgress.child);2570        let tail;2571        if (lastContentRow === null) {2572          // The whole list is part of the tail.2573          // TODO: We could fast path by just rendering the tail now.2574          tail = workInProgress.child;2575          workInProgress.child = null;2576        } else {2577          // Disconnect the tail rows after the content row.2578          // We're going to render them separately later.2579          tail = lastContentRow.sibling;2580          lastContentRow.sibling = null;2581        }2582        initSuspenseListRenderState(2583          workInProgress,...

ReactFiberBeginWork.js

Source:ReactFiberBeginWork.js

...2101    node.sibling.return = node.return;2102    node = node.sibling;2103  }2104}2105function findLastContentRow(firstChild: null | Fiber): null | Fiber {2106  // This is going to find the last row among these children that is already2107  // showing content on the screen, as opposed to being in fallback state or2108  // new. If a row has multiple Suspense boundaries, any of them being in the2109  // fallback state, counts as the whole row being in a fallback state.2110  // Note that the "rows" will be workInProgress, but any nested children2111  // will still be current since we haven't rendered them yet. The mounted2112  // order may not be the same as the new order. We use the new order.2113  let row = firstChild;2114  let lastContentRow: null | Fiber = null;2115  while (row !== null) {2116    let currentRow = row.alternate;2117    // New rows can't be content rows.2118    if (currentRow !== null && findFirstSuspended(currentRow) === null) {2119      lastContentRow = row;2120    }2121    row = row.sibling;2122  }2123  return lastContentRow;2124}2125type SuspenseListRevealOrder = 'forwards' | 'backwards' | 'together' | void;2126function validateRevealOrder(revealOrder: SuspenseListRevealOrder) {2127  if (true) {2128    if (2129      revealOrder !== undefined &&2130      revealOrder !== 'forwards' &&2131      revealOrder !== 'backwards' &&2132      revealOrder !== 'together' &&2133      !didWarnAboutRevealOrder[revealOrder]2134    ) {2135      didWarnAboutRevealOrder[revealOrder] = true;2136      if (typeof revealOrder === 'string') {2137        switch (revealOrder.toLowerCase()) {2138          case 'together':2139          case 'forwards':2140          case 'backwards': {2141            console.error(2142              '"%s" is not a valid value for revealOrder on <SuspenseList />. ' +2143                'Use lowercase "%s" instead.',2144              revealOrder,2145              revealOrder.toLowerCase(),2146            );2147            break;2148          }2149          case 'forward':2150          case 'backward': {2151            console.error(2152              '"%s" is not a valid value for revealOrder on <SuspenseList />. ' +2153                'React uses the -s suffix in the spelling. Use "%ss" instead.',2154              revealOrder,2155              revealOrder.toLowerCase(),2156            );2157            break;2158          }2159          default:2160            console.error(2161              '"%s" is not a supported revealOrder on <SuspenseList />. ' +2162                'Did you mean "together", "forwards" or "backwards"?',2163              revealOrder,2164            );2165            break;2166        }2167      } else {2168        console.error(2169          '%s is not a supported value for revealOrder on <SuspenseList />. ' +2170            'Did you mean "together", "forwards" or "backwards"?',2171          revealOrder,2172        );2173      }2174    }2175  }2176}2177function validateTailOptions(2178  tailMode: SuspenseListTailMode,2179  revealOrder: SuspenseListRevealOrder,2180) {2181  if (true) {2182    if (tailMode !== undefined && !didWarnAboutTailOptions[tailMode]) {2183      if (tailMode !== 'collapsed' && tailMode !== 'hidden') {2184        didWarnAboutTailOptions[tailMode] = true;2185        console.error(2186          '"%s" is not a supported value for tail on <SuspenseList />. ' +2187            'Did you mean "collapsed" or "hidden"?',2188          tailMode,2189        );2190      } else if (revealOrder !== 'forwards' && revealOrder !== 'backwards') {2191        didWarnAboutTailOptions[tailMode] = true;2192        console.error(2193          '<SuspenseList tail="%s" /> is only valid if revealOrder is ' +2194            '"forwards" or "backwards". ' +2195            'Did you mean to specify revealOrder="forwards"?',2196          tailMode,2197        );2198      }2199    }2200  }2201}2202function validateSuspenseListNestedChild(childSlot: mixed, index: number) {2203  if (true) {2204    let isArray = Array.isArray(childSlot);2205    let isIterable = !isArray && typeof getIteratorFn(childSlot) === 'function';2206    if (isArray || isIterable) {2207      let type = isArray ? 'array' : 'iterable';2208      console.error(2209        'A nested %s was passed to row #%s in <SuspenseList />. Wrap it in ' +2210          'an additional SuspenseList to configure its revealOrder: ' +2211          '<SuspenseList revealOrder=...> ... ' +2212          '<SuspenseList revealOrder=...>{%s}</SuspenseList> ... ' +2213          '</SuspenseList>',2214        type,2215        index,2216        type,2217      );2218      return false;2219    }2220  }2221  return true;2222}2223function validateSuspenseListChildren(2224  children: mixed,2225  revealOrder: SuspenseListRevealOrder,2226) {2227  if (true) {2228    if (2229      (revealOrder === 'forwards' || revealOrder === 'backwards') &&2230      children !== undefined &&2231      children !== null &&2232      children !== false2233    ) {2234      if (Array.isArray(children)) {2235        for (let i = 0; i < children.length; i++) {2236          if (!validateSuspenseListNestedChild(children[i], i)) {2237            return;2238          }2239        }2240      } else {2241        let iteratorFn = getIteratorFn(children);2242        if (typeof iteratorFn === 'function') {2243          const childrenIterator = iteratorFn.call(children);2244          if (childrenIterator) {2245            let step = childrenIterator.next();2246            let i = 0;2247            for (; !step.done; step = childrenIterator.next()) {2248              if (!validateSuspenseListNestedChild(step.value, i)) {2249                return;2250              }2251              i++;2252            }2253          }2254        } else {2255          console.error(2256            'A single row was passed to a <SuspenseList revealOrder="%s" />. ' +2257              'This is not useful since it needs multiple rows. ' +2258              'Did you mean to pass multiple children or an array?',2259            revealOrder,2260          );2261        }2262      }2263    }2264  }2265}2266function initSuspenseListRenderState(2267  workInProgress: Fiber,2268  isBackwards: boolean,2269  tail: null | Fiber,2270  lastContentRow: null | Fiber,2271  tailMode: SuspenseListTailMode,2272  lastEffectBeforeRendering: null | Fiber,2273): void {2274  let renderState: null | SuspenseListRenderState =2275    workInProgress.memoizedState;2276  if (renderState === null) {2277    workInProgress.memoizedState = ({2278      isBackwards: isBackwards,2279      rendering: null,2280      renderingStartTime: 0,2281      last: lastContentRow,2282      tail: tail,2283      tailExpiration: 0,2284      tailMode: tailMode,2285      lastEffect: lastEffectBeforeRendering,2286    }: SuspenseListRenderState);2287  } else {2288    // We can reuse the existing object from previous renders.2289    renderState.isBackwards = isBackwards;2290    renderState.rendering = null;2291    renderState.renderingStartTime = 0;2292    renderState.last = lastContentRow;2293    renderState.tail = tail;2294    renderState.tailExpiration = 0;2295    renderState.tailMode = tailMode;2296    renderState.lastEffect = lastEffectBeforeRendering;2297  }2298}2299// This can end up rendering this component multiple passes.2300// The first pass splits the children fibers into two sets. A head and tail.2301// We first render the head. If anything is in fallback state, we do another2302// pass through beginWork to rerender all children (including the tail) with2303// the force suspend context. If the first render didn't have anything in2304// in fallback state. Then we render each row in the tail one-by-one.2305// That happens in the completeWork phase without going back to beginWork.2306function updateSuspenseListComponent(2307  current: Fiber | null,2308  workInProgress: Fiber,2309  renderExpirationTime: ExpirationTime,2310) {2311  const nextProps = workInProgress.pendingProps;2312  const revealOrder: SuspenseListRevealOrder = nextProps.revealOrder;2313  const tailMode: SuspenseListTailMode = nextProps.tail;2314  const newChildren = nextProps.children;2315  validateRevealOrder(revealOrder);2316  validateTailOptions(tailMode, revealOrder);2317  validateSuspenseListChildren(newChildren, revealOrder);2318  reconcileChildren(current, workInProgress, newChildren, renderExpirationTime);2319  let suspenseContext: SuspenseContext = suspenseStackCursor.current;2320  let shouldForceFallback = hasSuspenseContext(2321    suspenseContext,2322    (ForceSuspenseFallback: SuspenseContext),2323  );2324  if (shouldForceFallback) {2325    suspenseContext = setShallowSuspenseContext(2326      suspenseContext,2327      ForceSuspenseFallback,2328    );2329    workInProgress.effectTag |= DidCapture;2330  } else {2331    const didSuspendBefore =2332      current !== null && (current.effectTag & DidCapture) !== NoEffect;2333    if (didSuspendBefore) {2334      // If we previously forced a fallback, we need to schedule work2335      // on any nested boundaries to let them know to try to render2336      // again. This is the same as context updating.2337      propagateSuspenseContextChange(2338        workInProgress,2339        workInProgress.child,2340        renderExpirationTime,2341      );2342    }2343    suspenseContext = setDefaultShallowSuspenseContext(suspenseContext);2344  }2345  pushSuspenseContext(workInProgress, suspenseContext);2346  if ((workInProgress.mode & BlockingMode) === NoMode) {2347    // Outside of blocking mode, SuspenseList doesn't work so we just2348    // use make it a noop by treating it as the default revealOrder.2349    workInProgress.memoizedState = null;2350  } else {2351    switch (revealOrder) {2352      case 'forwards': {2353        let lastContentRow = findLastContentRow(workInProgress.child);2354        let tail;2355        if (lastContentRow === null) {2356          // The whole list is part of the tail.2357          // TODO: We could fast path by just rendering the tail now.2358          tail = workInProgress.child;2359          workInProgress.child = null;2360        } else {2361          // Disconnect the tail rows after the content row.2362          // We're going to render them separately later.2363          tail = lastContentRow.sibling;2364          lastContentRow.sibling = null;2365        }2366        initSuspenseListRenderState(2367          workInProgress,...

ReactFiberBeginWork.old.js

Source:ReactFiberBeginWork.old.js

...1345      node.sibling.return = node.return;1346      node = node.sibling;1347    }1348  }1349  function findLastContentRow(firstChild) {1350    // This is going to find the last row among these children that is already1351    // showing content on the screen, as opposed to being in fallback state or1352    // new. If a row has multiple Suspense boundaries, any of them being in the1353    // fallback state, counts as the whole row being in a fallback state.1354    // Note that the "rows" will be workInProgress, but any nested children1355    // will still be current since we haven't rendered them yet. The mounted1356    // order may not be the same as the new order. We use the new order.1357    var row = firstChild;1358    var lastContentRow = null;1359    while (row !== null) {1360      var currentRow = row.alternate; // New rows can't be content rows.1361      if (currentRow !== null && findFirstSuspended(currentRow) === null) {1362        lastContentRow = row;1363      }1364      row = row.sibling;1365    }1366    return lastContentRow;1367  }1368  function validateRevealOrder(revealOrder) {1369    {1370      if (revealOrder !== undefined && revealOrder !== 'forwards' && revealOrder !== 'backwards' && revealOrder !== 'together' && !didWarnAboutRevealOrder[revealOrder]) {1371        didWarnAboutRevealOrder[revealOrder] = true;1372        if (typeof revealOrder === 'string') {1373          switch (revealOrder.toLowerCase()) {1374            case 'together':1375            case 'forwards':1376            case 'backwards':1377              {1378                error('"%s" is not a valid value for revealOrder on <SuspenseList />. ' + 'Use lowercase "%s" instead.', revealOrder, revealOrder.toLowerCase());1379                break;1380              }1381            case 'forward':1382            case 'backward':1383              {1384                error('"%s" is not a valid value for revealOrder on <SuspenseList />. ' + 'React uses the -s suffix in the spelling. Use "%ss" instead.', revealOrder, revealOrder.toLowerCase());1385                break;1386              }1387            default:1388              error('"%s" is not a supported revealOrder on <SuspenseList />. ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder);1389              break;1390          }1391        } else {1392          error('%s is not a supported value for revealOrder on <SuspenseList />. ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder);1393        }1394      }1395    }1396  }1397  function validateTailOptions(tailMode, revealOrder) {1398    {1399      if (tailMode !== undefined && !didWarnAboutTailOptions[tailMode]) {1400        if (tailMode !== 'collapsed' && tailMode !== 'hidden') {1401          didWarnAboutTailOptions[tailMode] = true;1402          error('"%s" is not a supported value for tail on <SuspenseList />. ' + 'Did you mean "collapsed" or "hidden"?', tailMode);1403        } else if (revealOrder !== 'forwards' && revealOrder !== 'backwards') {1404          didWarnAboutTailOptions[tailMode] = true;1405          error('<SuspenseList tail="%s" /> is only valid if revealOrder is ' + '"forwards" or "backwards". ' + 'Did you mean to specify revealOrder="forwards"?', tailMode);1406        }1407      }1408    }1409  }1410  function validateSuspenseListNestedChild(childSlot, index) {1411    {1412      var isArray = Array.isArray(childSlot);1413      var isIterable = !isArray && typeof getIteratorFn(childSlot) === 'function';1414      if (isArray || isIterable) {1415        var type = isArray ? 'array' : 'iterable';1416        error('A nested %s was passed to row #%s in <SuspenseList />. Wrap it in ' + 'an additional SuspenseList to configure its revealOrder: ' + '<SuspenseList revealOrder=...> ... ' + '<SuspenseList revealOrder=...>{%s}</SuspenseList> ... ' + '</SuspenseList>', type, index, type);1417        return false;1418      }1419    }1420    return true;1421  }1422  function validateSuspenseListChildren(children, revealOrder) {1423    {1424      if ((revealOrder === 'forwards' || revealOrder === 'backwards') && children !== undefined && children !== null && children !== false) {1425        if (Array.isArray(children)) {1426          for (var i = 0; i < children.length; i++) {1427            if (!validateSuspenseListNestedChild(children[i], i)) {1428              return;1429            }1430          }1431        } else {1432          var iteratorFn = getIteratorFn(children);1433          if (typeof iteratorFn === 'function') {1434            var childrenIterator = iteratorFn.call(children);1435            if (childrenIterator) {1436              var step = childrenIterator.next();1437              var _i = 0;1438              for (; !step.done; step = childrenIterator.next()) {1439                if (!validateSuspenseListNestedChild(step.value, _i)) {1440                  return;1441                }1442                _i++;1443              }1444            }1445          } else {1446            error('A single row was passed to a <SuspenseList revealOrder="%s" />. ' + 'This is not useful since it needs multiple rows. ' + 'Did you mean to pass multiple children or an array?', revealOrder);1447          }1448        }1449      }1450    }1451  }1452  function initSuspenseListRenderState(workInProgress, isBackwards, tail, lastContentRow, tailMode, lastEffectBeforeRendering) {1453    var renderState = workInProgress.memoizedState;1454    if (renderState === null) {1455      workInProgress.memoizedState = {1456        isBackwards: isBackwards,1457        rendering: null,1458        renderingStartTime: 0,1459        last: lastContentRow,1460        tail: tail,1461        tailMode: tailMode,1462        lastEffect: lastEffectBeforeRendering1463      };1464    } else {1465      // We can reuse the existing object from previous renders.1466      renderState.isBackwards = isBackwards;1467      renderState.rendering = null;1468      renderState.renderingStartTime = 0;1469      renderState.last = lastContentRow;1470      renderState.tail = tail;1471      renderState.tailMode = tailMode;1472      renderState.lastEffect = lastEffectBeforeRendering;1473    }1474  } // This can end up rendering this component multiple passes.1475  // The first pass splits the children fibers into two sets. A head and tail.1476  // We first render the head. If anything is in fallback state, we do another1477  // pass through beginWork to rerender all children (including the tail) with1478  // the force suspend context. If the first render didn't have anything in1479  // in fallback state. Then we render each row in the tail one-by-one.1480  // That happens in the completeWork phase without going back to beginWork.1481  function updateSuspenseListComponent(current, workInProgress, renderLanes) {1482    var nextProps = workInProgress.pendingProps;1483    var revealOrder = nextProps.revealOrder;1484    var tailMode = nextProps.tail;1485    var newChildren = nextProps.children;1486    validateRevealOrder(revealOrder);1487    validateTailOptions(tailMode, revealOrder);1488    validateSuspenseListChildren(newChildren, revealOrder);1489    reconcileChildren(current, workInProgress, newChildren, renderLanes);1490    var suspenseContext = suspenseStackCursor.current;1491    var shouldForceFallback = hasSuspenseContext(suspenseContext, ForceSuspenseFallback);1492    if (shouldForceFallback) {1493      suspenseContext = setShallowSuspenseContext(suspenseContext, ForceSuspenseFallback);1494      workInProgress.flags |= DidCapture;1495    } else {1496      var didSuspendBefore = current !== null && (current.flags & DidCapture) !== NoFlags;1497      if (didSuspendBefore) {1498        // If we previously forced a fallback, we need to schedule work1499        // on any nested boundaries to let them know to try to render1500        // again. This is the same as context updating.1501        propagateSuspenseContextChange(workInProgress, workInProgress.child, renderLanes);1502      }1503      suspenseContext = setDefaultShallowSuspenseContext(suspenseContext);1504    }1505    pushSuspenseContext(workInProgress, suspenseContext);1506    if ((workInProgress.mode & BlockingMode) === NoMode) {1507      // In legacy mode, SuspenseList doesn't work so we just1508      // use make it a noop by treating it as the default revealOrder.1509      workInProgress.memoizedState = null;1510    } else {1511      switch (revealOrder) {1512        case 'forwards':1513          {1514            var lastContentRow = findLastContentRow(workInProgress.child);1515            var tail;1516            if (lastContentRow === null) {1517              // The whole list is part of the tail.1518              // TODO: We could fast path by just rendering the tail now.1519              tail = workInProgress.child;1520              workInProgress.child = null;1521            } else {1522              // Disconnect the tail rows after the content row.1523              // We're going to render them separately later.1524              tail = lastContentRow.sibling;1525              lastContentRow.sibling = null;1526            }1527            initSuspenseListRenderState(workInProgress, false, // isBackwards1528            tail, lastContentRow, tailMode, workInProgress.lastEffect);...

Using AI Code Generation

1const { findLastContentRow } = require('playwright/lib/server/chromium/crPage');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 lastRow = await findLastContentRow(page);8    console.log(lastRow);9    await browser.close();10})();11{ x: 0, y: 0, width: 0, height: 0 }12const { findLastContentRow } = require('playwright/lib/server/chromium/crPage');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    const lastRow = await findLastContentRow(page);19    console.log(lastRow);20    await browser.close();21})();22{ x: 0, y: 0, width: 0, height: 0 }23const { findLastContentRow } = require('playwright/lib/server/chromium/crPage');24const { chromium } = require('playwright');25(async () => {26    const browser = await chromium.launch();27    const context = await browser.newContext();28    const page = await context.newPage();29    const lastRow = await findLastContentRow(page);30    console.log(lastRow);31    await browser.close();32})();33{ x: 0, y: 0

Using AI Code Generation

1const fs = require('fs');2const path = require('path');3const { chromium } = require('playwright');4const { findLastContentRow } = require('playwright/lib/server/supplements/recorder/recorderSupplement');5(async () => {6  const browser = await chromium.launch();7  const context = await browser.newContext();8  const page = await context.newPage();9  await page.fill('input[name="q"]', 'playwright');10  await page.click('text=Google Search');11  await page.waitForSelector('text=Playwright');12  await page.click('text=Playwright');13  await page.waitForSelector('text=Playwright is a Node.js library to automate');14  const lastRow = await findLastContentRow(page, 'text=Playwright is a Node.js library to automate');15  console.log(lastRow);16  await browser.close();17})();18const fs = require('fs');19const path = require('path');20const { chromium } = require('playwright');21const { findLastContentRow } = require('playwright/lib/server/supplements/recorder/recorderSupplement');22(async () => {23  const browser = await chromium.launch();24  const context = await browser.newContext();25  const page = await context.newPage();26  await page.fill('input[name="q"]', 'playwright');27  await page.click('text=Google Search');28  await page.waitForSelector('text=Playwright');29  await page.click('text=Playwright');30  await page.waitForSelector('text=Playwright is a Node.js library to automate');31  const lastRow = await findLastContentRow(page, 'text=Playwright is a Node.js library to automate');32  console.log(lastRow);33  await browser.close();34})();35const fs = require('fs');36const path = require('path');37const { chromium } = require('playwright');38const { findLastContentRow } = require('playwright/lib/server/supplements/recorder/recorderSupplement');39(async () => {40  const browser = await chromium.launch();

Using AI Code Generation

1const { findLastContentRow } = require('@playwright/test/lib/utils');2const { test } = require('@playwright/test');3test('findLastContentRow', async ({ page }) => {4  const table = await page.$('table');5  const lastRow = await findLastContentRow(table);6  console.log(lastRow);7});8const { findLastContentRow } = require('@playwright/test/lib/utils');9const { test } = require('@playwright/test');10test('findLastContentRow', async ({ page }) => {11  const table = await page.$('table');12  const lastRow = await findLastContentRow(table);13  const lastRowText = await page.innerText(`table tr:nth-child(${lastRow}) td`);14  expect(lastRowText).toBe('Germany');15});

Using AI Code Generation

1const { findLastContentRow } = require('playwright/lib/client/selectorEngine');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch({ headless: false });5  const page = await browser.newPage();6  const lastContentRow = await findLastContentRow(page, '.navbar');7  console.log(lastContentRow);8  await browser.close();9})();10const { findLastContentRow } = require('playwright/lib/client/selectorEngine');11const { chromium } = require('playwright');12(async () => {13  const browser = await chromium.launch({ headless: false });14  const page = await browser.newPage();15  const lastContentRow = await findLastContentRow(page, '.navbar');16  console.log(lastContentRow);17  await browser.close();18})();19const { findLastContentRow } = require('playwright/lib/client/selectorEngine');20const { chromium } = require('playwright');21(async () => {22  const browser = await chromium.launch({ headless: false });23  const page = await browser.newPage();24  const lastContentRow = await findLastContentRow(page, '.navbar');25  console.log(lastContentRow);26  await browser.close();27})();

Using AI Code Generation

1const { findLastContentRow } = require('@playwright/test/lib/utils');2const { test } = require('@playwright/test');3test('test', async ({ page }) => {4  const lastRow = await findLastContentRow(page, 'table#customers');5  console.log(lastRow);6});7const { test } = require('@playwright/test');8test.describe('test', () => {9  test('test', async ({ page }) => {10    const lastRow = await page.findLastContentRow('table#customers');11    console.log(lastRow);12  });13});14const { test } = require('@playwright/test');15test.describe('test', () => {16  test('test', async ({ page }) => {

Using AI Code Generation

1const { findLastContentRow } = require('@playwright/test/lib/utils');2const { test } = require('@playwright/test');3test('test', async ({ page }) => {4  const lastRow = await findLastContentRow(page);5  console.log(lastRow);6});

Using AI Code Generation

1const { findLastContentRow } = require('playwright/lib/server/supplements/recorder/recorderSupplement');2const { Page } = require('playwright');3(async () => {4  const lastContentRow = await findLastContentRow(page, '.datagrid-body');5  console.log(lastContentRow);6})();7const { findLastContentRow } = require('playwright/lib/server/supplements/recorder/recorderSupplement');8const { Page } = require('playwright');9(async () => {10  const lastContentRow = await findLastContentRow(page, '.datagrid-body');11  console.log(lastContentRow);12})();13const { findLastContentRow } = require('playwright/lib/server/supplements/recorder/recorderSupplement');14const { Page } = require('playwright');15(async () => {16  const lastContentRow = await findLastContentRow(page, '.datagrid-body');17  console.log(lastContentRow);18})();19const { findLastContentRow } = require('playwright/lib/server/supplements/recorder/recorderSupplement');20const { Page } = require('playwright');21(async () => {22  const lastContentRow = await findLastContentRow(page, '.datagrid-body');23  console.log(lastContentRow);24})();25const { findLastContentRow } = require('playwright/lib/server/supplements/recorder/recorderSupplement');26const { Page } = require('playwright');27(async () => {

Using AI Code Generation

1const { findLastContentRow } = require("playwright/lib/server/supplements/recorder/recorderSupplement.js");2const { Page } = require("playwright/lib/server/page.js");3const { Frame } = require("playwright/lib/server/frame.js");4{ type: 'action', url: '', name: 'click', value: 'text=Get started' }5Playwright Recorder API Implementation (Part 1)6Playwright Recorder API Implementation (Part 2)7Playwright Recorder API Implementation (Part 3)8Playwright Recorder API Implementation (Part 4)9Playwright Recorder API Implementation (Part 5)10Playwright Recorder API Implementation (Part 6)11Playwright Recorder API Implementation (Part 7)12Playwright Recorder API Implementation (Part 8)13Playwright Recorder API Implementation (Part 9)14Playwright Recorder API Implementation (Part 10)15Playwright Recorder API Implementation (Part 11)16Playwright Recorder API Implementation (Part 12)17Playwright Recorder API Implementation (Part 13)18Playwright Recorder API Implementation (Part 14)19Playwright Recorder API Implementation (Part 15)20Playwright Recorder API Implementation (Part 16)21Playwright Recorder API Implementation (Part 17)22Playwright Recorder API Implementation (Part 18)23Playwright Recorder API Implementation (Part 19)24Playwright Recorder API Implementation (Part 20)25Playwright Recorder API Implementation (Part 21)26Playwright Recorder API Implementation (Part 22)27Playwright Recorder API Implementation (Part 23)28Playwright Recorder API Implementation (Part 24)29Playwright Recorder API Implementation (Part 25)30Playwright Recorder API Implementation (Part 26)31Playwright Recorder API Implementation (Part 27)

Using AI Code Generation

1const { findLastContentRow } = require('@playwright/test/lib/internal/excel');2const { test, expect } = require('@playwright/test');3test('findLastContentRow', async ({ page }) => {4  const excel = await page.excel('C:\\Users\\abc\\Desktop\\test.xlsx');5  const lastRow = await findLastContentRow(excel, 1);6  expect(lastRow).toBe(2);7});

Using AI Code Generation

1const { internalSpreadsheet } = require('playwright-internal');2const spreadsheet = new internalSpreadsheet('path/to/spreadsheet.xlsx');3async function findLastContentRow() {4    const lastContentRow = await spreadsheet.findLastContentRow();5    console.log('Last Content Row: ' + lastContentRow);6}7findLastContentRow();8const { internalSpreadsheet } = require('playwright-internal');9const spreadsheet = new internalSpreadsheet('path/to/spreadsheet.xlsx');10async function findLastContentColumn() {11    const lastContentColumn = await spreadsheet.findLastContentColumn();12    console.log('Last Content Column: ' + lastContentColumn);13}14findLastContentColumn();15const { internalSpreadsheet } = require('playwright-internal');16const spreadsheet = new internalSpreadsheet('path/to/spreadsheet.xlsx');17async function findLastContentCell() {18    const lastContentCell = await spreadsheet.findLastContentCell();19    console.log('Last Content Cell: ' + lastContentCell);20}21findLastContentCell();22const { internalSpreadsheet } = require('playwright-internal');23const spreadsheet = new internalSpreadsheet('path/to/spreadsheet.xlsx');24async function findLastContentCell() {25    const lastContentCell = await spreadsheet.findLastContentCell();26    console.log('Last Content Cell: ' + lastContentCell);27}28findLastContentCell();29const { internalSpreadsheet } = require('playwright-internal');30const spreadsheet = new internalSpreadsheet('path/to/spreadsheet.xlsx');31async function findLastContentCell() {32    const lastContentCell = await spreadsheet.findLastContentCell();33    console.log('Last Content Cell: ' + lastContentCell);34}35findLastContentCell();36const { internalSpreadsheet } = require('playwright-internal');37const spreadsheet = new internalSpreadsheet('path/to/spreadsheet.xlsx');38async function findLastContentCell()

Playwright tutorial

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.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.