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How to use pickArbitraryLaneIndex method in Playwright Internal
Best JavaScript code snippet using playwright-internal
ReactFiberLane.new.js
Source:ReactFiberLane.new.js 
...263 if (entangledLanes !== NoLanes) {264 const entanglements = root.entanglements;265 let lanes = nextLanes & entangledLanes;266 while (lanes > 0) {267 const index = pickArbitraryLaneIndex(lanes);268 const lane = 1 << index;269 nextLanes |= entanglements[index];270 lanes &= ~lane;271 }272 }273 return nextLanes;274}275export function getMostRecentEventTime(root: FiberRoot, lanes: Lanes): number {276 const eventTimes = root.eventTimes;277 let mostRecentEventTime = NoTimestamp;278 while (lanes > 0) {279 const index = pickArbitraryLaneIndex(lanes);280 const lane = 1 << index;281 const eventTime = eventTimes[index];282 if (eventTime > mostRecentEventTime) {283 mostRecentEventTime = eventTime;284 }285 lanes &= ~lane;286 }287 return mostRecentEventTime;288}289function computeExpirationTime(lane: Lane, currentTime: number) {290 switch (lane) {291 case SyncLane:292 case InputContinuousHydrationLane:293 case InputContinuousLane:294 // User interactions should expire slightly more quickly.295 //296 // NOTE: This is set to the corresponding constant as in Scheduler.js.297 // When we made it larger, a product metric in www regressed, suggesting298 // there's a user interaction that's being starved by a series of299 // synchronous updates. If that theory is correct, the proper solution is300 // to fix the starvation. However, this scenario supports the idea that301 // expiration times are an important safeguard when starvation302 // does happen.303 return currentTime + 250;304 case DefaultHydrationLane:305 case DefaultLane:306 case TransitionHydrationLane:307 case TransitionLane1:308 case TransitionLane2:309 case TransitionLane3:310 case TransitionLane4:311 case TransitionLane5:312 case TransitionLane6:313 case TransitionLane7:314 case TransitionLane8:315 case TransitionLane9:316 case TransitionLane10:317 case TransitionLane11:318 case TransitionLane12:319 case TransitionLane13:320 case TransitionLane14:321 case TransitionLane15:322 case TransitionLane16:323 return currentTime + 5000;324 case RetryLane1:325 case RetryLane2:326 case RetryLane3:327 case RetryLane4:328 case RetryLane5:329 // TODO: Retries should be allowed to expire if they are CPU bound for330 // too long, but when I made this change it caused a spike in browser331 // crashes. There must be some other underlying bug; not super urgent but332 // ideally should figure out why and fix it. Unfortunately we don't have333 // a repro for the crashes, only detected via production metrics.334 return NoTimestamp;335 case SelectiveHydrationLane:336 case IdleHydrationLane:337 case IdleLane:338 case OffscreenLane:339 // Anything idle priority or lower should never expire.340 return NoTimestamp;341 default:342 if (__DEV__) {343 console.error(344 'Should have found matching lanes. This is a bug in React.',345 );346 }347 return NoTimestamp;348 }349}350export function markStarvedLanesAsExpired(351 root: FiberRoot,352 currentTime: number,353): void {354 // TODO: This gets called every time we yield. We can optimize by storing355 // the earliest expiration time on the root. Then use that to quickly bail out356 // of this function.357 const pendingLanes = root.pendingLanes;358 const suspendedLanes = root.suspendedLanes;359 const pingedLanes = root.pingedLanes;360 const expirationTimes = root.expirationTimes;361 // Iterate through the pending lanes and check if we've reached their362 // expiration time. If so, we'll assume the update is being starved and mark363 // it as expired to force it to finish.364 let lanes = pendingLanes;365 while (lanes > 0) {366 const index = pickArbitraryLaneIndex(lanes);367 const lane = 1 << index;368 const expirationTime = expirationTimes[index];369 if (expirationTime === NoTimestamp) {370 // Found a pending lane with no expiration time. If it's not suspended, or371 // if it's pinged, assume it's CPU-bound. Compute a new expiration time372 // using the current time.373 if (374 (lane & suspendedLanes) === NoLanes ||375 (lane & pingedLanes) !== NoLanes376 ) {377 // Assumes timestamps are monotonically increasing.378 expirationTimes[index] = computeExpirationTime(lane, currentTime);379 }380 } else if (expirationTime <= currentTime) {381 // This lane expired382 root.expiredLanes |= lane;383 }384 lanes &= ~lane;385 }386}387// This returns the highest priority pending lanes regardless of whether they388// are suspended.389export function getHighestPriorityPendingLanes(root: FiberRoot) {390 return getHighestPriorityLanes(root.pendingLanes);391}392export function getLanesToRetrySynchronouslyOnError(root: FiberRoot): Lanes {393 const everythingButOffscreen = root.pendingLanes & ~OffscreenLane;394 if (everythingButOffscreen !== NoLanes) {395 return everythingButOffscreen;396 }397 if (everythingButOffscreen & OffscreenLane) {398 return OffscreenLane;399 }400 return NoLanes;401}402export function includesNonIdleWork(lanes: Lanes) {403 return (lanes & NonIdleLanes) !== NoLanes;404}405export function includesOnlyRetries(lanes: Lanes) {406 return (lanes & RetryLanes) === lanes;407}408export function includesOnlyTransitions(lanes: Lanes) {409 return (lanes & TransitionLanes) === lanes;410}411export function shouldTimeSlice(root: FiberRoot, lanes: Lanes) {412 if ((lanes & root.expiredLanes) !== NoLanes) {413 // At least one of these lanes expired. To prevent additional starvation,414 // finish rendering without yielding execution.415 return false;416 }417 if (418 allowConcurrentByDefault &&419 (root.current.mode & ConcurrentUpdatesByDefaultMode) !== NoMode420 ) {421 // Concurrent updates by default always use time slicing.422 return true;423 }424 const SyncDefaultLanes =425 InputContinuousHydrationLane |426 InputContinuousLane |427 DefaultHydrationLane |428 DefaultLane;429 return (lanes & SyncDefaultLanes) === NoLanes;430}431export function isTransitionLane(lane: Lane) {432 return (lane & TransitionLanes) !== 0;433}434export function claimNextTransitionLane(): Lane {435 // Cycle through the lanes, assigning each new transition to the next lane.436 // In most cases, this means every transition gets its own lane, until we437 // run out of lanes and cycle back to the beginning.438 const lane = nextTransitionLane;439 nextTransitionLane <<= 1;440 if ((nextTransitionLane & TransitionLanes) === 0) {441 nextTransitionLane = TransitionLane1;442 }443 return lane;444}445export function claimNextRetryLane(): Lane {446 const lane = nextRetryLane;447 nextRetryLane <<= 1;448 if ((nextRetryLane & RetryLanes) === 0) {449 nextRetryLane = RetryLane1;450 }451 return lane;452}453export function getHighestPriorityLane(lanes: Lanes): Lane {454 return lanes & -lanes;455}456export function pickArbitraryLane(lanes: Lanes): Lane {457 // This wrapper function gets inlined. Only exists so to communicate that it458 // doesn't matter which bit is selected; you can pick any bit without459 // affecting the algorithms where its used. Here I'm using460 // getHighestPriorityLane because it requires the fewest operations.461 return getHighestPriorityLane(lanes);462}463function pickArbitraryLaneIndex(lanes: Lanes) {464 return 31 - clz32(lanes);465}466function laneToIndex(lane: Lane) {467 return pickArbitraryLaneIndex(lane);468}469export function includesSomeLane(a: Lanes | Lane, b: Lanes | Lane) {470 return (a & b) !== NoLanes;471}472export function isSubsetOfLanes(set: Lanes, subset: Lanes | Lane) {473 return (set & subset) === subset;474}475export function mergeLanes(a: Lanes | Lane, b: Lanes | Lane): Lanes {476 return a | b;477}478export function removeLanes(set: Lanes, subset: Lanes | Lane): Lanes {479 return set & ~subset;480}481export function intersectLanes(a: Lanes | Lane, b: Lanes | Lane): Lanes {482 return a & b;483}484// Seems redundant, but it changes the type from a single lane (used for485// updates) to a group of lanes (used for flushing work).486export function laneToLanes(lane: Lane): Lanes {487 return lane;488}489export function higherPriorityLane(a: Lane, b: Lane) {490 // This works because the bit ranges decrease in priority as you go left.491 return a !== NoLane && a < b ? a : b;492}493export function createLaneMap<T>(initial: T): LaneMap<T> {494 // Intentionally pushing one by one.495 // https://v8.dev/blog/elements-kinds#avoid-creating-holes496 const laneMap = [];497 for (let i = 0; i < TotalLanes; i++) {498 laneMap.push(initial);499 }500 return laneMap;501}502export function markRootUpdated(503 root: FiberRoot,504 updateLane: Lane,505 eventTime: number,506) {507 root.pendingLanes |= updateLane;508 // If there are any suspended transitions, it's possible this new update509 // could unblock them. Clear the suspended lanes so that we can try rendering510 // them again.511 //512 // TODO: We really only need to unsuspend only lanes that are in the513 // `subtreeLanes` of the updated fiber, or the update lanes of the return514 // path. This would exclude suspended updates in an unrelated sibling tree,515 // since there's no way for this update to unblock it.516 //517 // We don't do this if the incoming update is idle, because we never process518 // idle updates until after all the regular updates have finished; there's no519 // way it could unblock a transition.520 if (updateLane !== IdleLane) {521 root.suspendedLanes = NoLanes;522 root.pingedLanes = NoLanes;523 }524 const eventTimes = root.eventTimes;525 const index = laneToIndex(updateLane);526 // We can always overwrite an existing timestamp because we prefer the most527 // recent event, and we assume time is monotonically increasing.528 eventTimes[index] = eventTime;529}530export function markRootSuspended(root: FiberRoot, suspendedLanes: Lanes) {531 root.suspendedLanes |= suspendedLanes;532 root.pingedLanes &= ~suspendedLanes;533 // The suspended lanes are no longer CPU-bound. Clear their expiration times.534 const expirationTimes = root.expirationTimes;535 let lanes = suspendedLanes;536 while (lanes > 0) {537 const index = pickArbitraryLaneIndex(lanes);538 const lane = 1 << index;539 expirationTimes[index] = NoTimestamp;540 lanes &= ~lane;541 }542}543export function markRootPinged(544 root: FiberRoot,545 pingedLanes: Lanes,546 eventTime: number,547) {548 root.pingedLanes |= root.suspendedLanes & pingedLanes;549}550export function markRootMutableRead(root: FiberRoot, updateLane: Lane) {551 root.mutableReadLanes |= updateLane & root.pendingLanes;552}553export function markRootFinished(root: FiberRoot, remainingLanes: Lanes) {554 const noLongerPendingLanes = root.pendingLanes & ~remainingLanes;555 root.pendingLanes = remainingLanes;556 // Let's try everything again557 root.suspendedLanes = 0;558 root.pingedLanes = 0;559 root.expiredLanes &= remainingLanes;560 root.mutableReadLanes &= remainingLanes;561 root.entangledLanes &= remainingLanes;562 if (enableCache) {563 const pooledCacheLanes = (root.pooledCacheLanes &= remainingLanes);564 if (pooledCacheLanes === NoLanes) {565 // None of the remaining work relies on the cache pool. Clear it so566 // subsequent requests get a new cache.567 root.pooledCache = null;568 }569 }570 const entanglements = root.entanglements;571 const eventTimes = root.eventTimes;572 const expirationTimes = root.expirationTimes;573 // Clear the lanes that no longer have pending work574 let lanes = noLongerPendingLanes;575 while (lanes > 0) {576 const index = pickArbitraryLaneIndex(lanes);577 const lane = 1 << index;578 entanglements[index] = NoLanes;579 eventTimes[index] = NoTimestamp;580 expirationTimes[index] = NoTimestamp;581 lanes &= ~lane;582 }583}584export function markRootEntangled(root: FiberRoot, entangledLanes: Lanes) {585 // In addition to entangling each of the given lanes with each other, we also586 // have to consider _transitive_ entanglements. For each lane that is already587 // entangled with *any* of the given lanes, that lane is now transitively588 // entangled with *all* the given lanes.589 //590 // Translated: If C is entangled with A, then entangling A with B also591 // entangles C with B.592 //593 // If this is hard to grasp, it might help to intentionally break this594 // function and look at the tests that fail in ReactTransition-test.js. Try595 // commenting out one of the conditions below.596 const rootEntangledLanes = (root.entangledLanes |= entangledLanes);597 const entanglements = root.entanglements;598 let lanes = rootEntangledLanes;599 while (lanes) {600 const index = pickArbitraryLaneIndex(lanes);601 const lane = 1 << index;602 if (603 // Is this one of the newly entangled lanes?604 (lane & entangledLanes) |605 // Is this lane transitively entangled with the newly entangled lanes?606 (entanglements[index] & entangledLanes)607 ) {608 entanglements[index] |= entangledLanes;609 }610 lanes &= ~lane;611 }612}613export function getBumpedLaneForHydration(614 root: FiberRoot,...
ReactFiberLane.old.js
Source:ReactFiberLane.old.js
...263 if (entangledLanes !== NoLanes) {264 const entanglements = root.entanglements;265 let lanes = nextLanes & entangledLanes;266 while (lanes > 0) {267 const index = pickArbitraryLaneIndex(lanes);268 const lane = 1 << index;269 nextLanes |= entanglements[index];270 lanes &= ~lane;271 }272 }273 return nextLanes;274}275export function getMostRecentEventTime(root: FiberRoot, lanes: Lanes): number {276 const eventTimes = root.eventTimes;277 let mostRecentEventTime = NoTimestamp;278 while (lanes > 0) {279 const index = pickArbitraryLaneIndex(lanes);280 const lane = 1 << index;281 const eventTime = eventTimes[index];282 if (eventTime > mostRecentEventTime) {283 mostRecentEventTime = eventTime;284 }285 lanes &= ~lane;286 }287 return mostRecentEventTime;288}289function computeExpirationTime(lane: Lane, currentTime: number) {290 switch (lane) {291 case SyncLane:292 case InputContinuousHydrationLane:293 case InputContinuousLane:294 // User interactions should expire slightly more quickly.295 //296 // NOTE: This is set to the corresponding constant as in Scheduler.js.297 // When we made it larger, a product metric in www regressed, suggesting298 // there's a user interaction that's being starved by a series of299 // synchronous updates. If that theory is correct, the proper solution is300 // to fix the starvation. However, this scenario supports the idea that301 // expiration times are an important safeguard when starvation302 // does happen.303 return currentTime + 250;304 case DefaultHydrationLane:305 case DefaultLane:306 case TransitionHydrationLane:307 case TransitionLane1:308 case TransitionLane2:309 case TransitionLane3:310 case TransitionLane4:311 case TransitionLane5:312 case TransitionLane6:313 case TransitionLane7:314 case TransitionLane8:315 case TransitionLane9:316 case TransitionLane10:317 case TransitionLane11:318 case TransitionLane12:319 case TransitionLane13:320 case TransitionLane14:321 case TransitionLane15:322 case TransitionLane16:323 return currentTime + 5000;324 case RetryLane1:325 case RetryLane2:326 case RetryLane3:327 case RetryLane4:328 case RetryLane5:329 // TODO: Retries should be allowed to expire if they are CPU bound for330 // too long, but when I made this change it caused a spike in browser331 // crashes. There must be some other underlying bug; not super urgent but332 // ideally should figure out why and fix it. Unfortunately we don't have333 // a repro for the crashes, only detected via production metrics.334 return NoTimestamp;335 case SelectiveHydrationLane:336 case IdleHydrationLane:337 case IdleLane:338 case OffscreenLane:339 // Anything idle priority or lower should never expire.340 return NoTimestamp;341 default:342 if (__DEV__) {343 console.error(344 'Should have found matching lanes. This is a bug in React.',345 );346 }347 return NoTimestamp;348 }349}350export function markStarvedLanesAsExpired(351 root: FiberRoot,352 currentTime: number,353): void {354 // TODO: This gets called every time we yield. We can optimize by storing355 // the earliest expiration time on the root. Then use that to quickly bail out356 // of this function.357 const pendingLanes = root.pendingLanes;358 const suspendedLanes = root.suspendedLanes;359 const pingedLanes = root.pingedLanes;360 const expirationTimes = root.expirationTimes;361 // Iterate through the pending lanes and check if we've reached their362 // expiration time. If so, we'll assume the update is being starved and mark363 // it as expired to force it to finish.364 let lanes = pendingLanes;365 while (lanes > 0) {366 const index = pickArbitraryLaneIndex(lanes);367 const lane = 1 << index;368 const expirationTime = expirationTimes[index];369 if (expirationTime === NoTimestamp) {370 // Found a pending lane with no expiration time. If it's not suspended, or371 // if it's pinged, assume it's CPU-bound. Compute a new expiration time372 // using the current time.373 if (374 (lane & suspendedLanes) === NoLanes ||375 (lane & pingedLanes) !== NoLanes376 ) {377 // Assumes timestamps are monotonically increasing.378 expirationTimes[index] = computeExpirationTime(lane, currentTime);379 }380 } else if (expirationTime <= currentTime) {381 // This lane expired382 root.expiredLanes |= lane;383 }384 lanes &= ~lane;385 }386}387// This returns the highest priority pending lanes regardless of whether they388// are suspended.389export function getHighestPriorityPendingLanes(root: FiberRoot) {390 return getHighestPriorityLanes(root.pendingLanes);391}392export function getLanesToRetrySynchronouslyOnError(root: FiberRoot): Lanes {393 const everythingButOffscreen = root.pendingLanes & ~OffscreenLane;394 if (everythingButOffscreen !== NoLanes) {395 return everythingButOffscreen;396 }397 if (everythingButOffscreen & OffscreenLane) {398 return OffscreenLane;399 }400 return NoLanes;401}402export function includesNonIdleWork(lanes: Lanes) {403 return (lanes & NonIdleLanes) !== NoLanes;404}405export function includesOnlyRetries(lanes: Lanes) {406 return (lanes & RetryLanes) === lanes;407}408export function includesOnlyTransitions(lanes: Lanes) {409 return (lanes & TransitionLanes) === lanes;410}411export function shouldTimeSlice(root: FiberRoot, lanes: Lanes) {412 if ((lanes & root.expiredLanes) !== NoLanes) {413 // At least one of these lanes expired. To prevent additional starvation,414 // finish rendering without yielding execution.415 return false;416 }417 if (418 allowConcurrentByDefault &&419 (root.current.mode & ConcurrentUpdatesByDefaultMode) !== NoMode420 ) {421 // Concurrent updates by default always use time slicing.422 return true;423 }424 const SyncDefaultLanes =425 InputContinuousHydrationLane |426 InputContinuousLane |427 DefaultHydrationLane |428 DefaultLane;429 return (lanes & SyncDefaultLanes) === NoLanes;430}431export function isTransitionLane(lane: Lane) {432 return (lane & TransitionLanes) !== 0;433}434export function claimNextTransitionLane(): Lane {435 // Cycle through the lanes, assigning each new transition to the next lane.436 // In most cases, this means every transition gets its own lane, until we437 // run out of lanes and cycle back to the beginning.438 const lane = nextTransitionLane;439 nextTransitionLane <<= 1;440 if ((nextTransitionLane & TransitionLanes) === 0) {441 nextTransitionLane = TransitionLane1;442 }443 return lane;444}445export function claimNextRetryLane(): Lane {446 const lane = nextRetryLane;447 nextRetryLane <<= 1;448 if ((nextRetryLane & RetryLanes) === 0) {449 nextRetryLane = RetryLane1;450 }451 return lane;452}453export function getHighestPriorityLane(lanes: Lanes): Lane {454 return lanes & -lanes;455}456export function pickArbitraryLane(lanes: Lanes): Lane {457 // This wrapper function gets inlined. Only exists so to communicate that it458 // doesn't matter which bit is selected; you can pick any bit without459 // affecting the algorithms where its used. Here I'm using460 // getHighestPriorityLane because it requires the fewest operations.461 return getHighestPriorityLane(lanes);462}463function pickArbitraryLaneIndex(lanes: Lanes) {464 return 31 - clz32(lanes);465}466function laneToIndex(lane: Lane) {467 return pickArbitraryLaneIndex(lane);468}469export function includesSomeLane(a: Lanes | Lane, b: Lanes | Lane) {470 return (a & b) !== NoLanes;471}472export function isSubsetOfLanes(set: Lanes, subset: Lanes | Lane) {473 return (set & subset) === subset;474}475export function mergeLanes(a: Lanes | Lane, b: Lanes | Lane): Lanes {476 return a | b;477}478export function removeLanes(set: Lanes, subset: Lanes | Lane): Lanes {479 return set & ~subset;480}481export function intersectLanes(a: Lanes | Lane, b: Lanes | Lane): Lanes {482 return a & b;483}484// Seems redundant, but it changes the type from a single lane (used for485// updates) to a group of lanes (used for flushing work).486export function laneToLanes(lane: Lane): Lanes {487 return lane;488}489export function higherPriorityLane(a: Lane, b: Lane) {490 // This works because the bit ranges decrease in priority as you go left.491 return a !== NoLane && a < b ? a : b;492}493export function createLaneMap<T>(initial: T): LaneMap<T> {494 // Intentionally pushing one by one.495 // https://v8.dev/blog/elements-kinds#avoid-creating-holes496 const laneMap = [];497 for (let i = 0; i < TotalLanes; i++) {498 laneMap.push(initial);499 }500 return laneMap;501}502export function markRootUpdated(503 root: FiberRoot,504 updateLane: Lane,505 eventTime: number,506) {507 root.pendingLanes |= updateLane;508 // If there are any suspended transitions, it's possible this new update509 // could unblock them. Clear the suspended lanes so that we can try rendering510 // them again.511 //512 // TODO: We really only need to unsuspend only lanes that are in the513 // `subtreeLanes` of the updated fiber, or the update lanes of the return514 // path. This would exclude suspended updates in an unrelated sibling tree,515 // since there's no way for this update to unblock it.516 //517 // We don't do this if the incoming update is idle, because we never process518 // idle updates until after all the regular updates have finished; there's no519 // way it could unblock a transition.520 if (updateLane !== IdleLane) {521 root.suspendedLanes = NoLanes;522 root.pingedLanes = NoLanes;523 }524 const eventTimes = root.eventTimes;525 const index = laneToIndex(updateLane);526 // We can always overwrite an existing timestamp because we prefer the most527 // recent event, and we assume time is monotonically increasing.528 eventTimes[index] = eventTime;529}530export function markRootSuspended(root: FiberRoot, suspendedLanes: Lanes) {531 root.suspendedLanes |= suspendedLanes;532 root.pingedLanes &= ~suspendedLanes;533 // The suspended lanes are no longer CPU-bound. Clear their expiration times.534 const expirationTimes = root.expirationTimes;535 let lanes = suspendedLanes;536 while (lanes > 0) {537 const index = pickArbitraryLaneIndex(lanes);538 const lane = 1 << index;539 expirationTimes[index] = NoTimestamp;540 lanes &= ~lane;541 }542}543export function markRootPinged(544 root: FiberRoot,545 pingedLanes: Lanes,546 eventTime: number,547) {548 root.pingedLanes |= root.suspendedLanes & pingedLanes;549}550export function markRootMutableRead(root: FiberRoot, updateLane: Lane) {551 root.mutableReadLanes |= updateLane & root.pendingLanes;552}553export function markRootFinished(root: FiberRoot, remainingLanes: Lanes) {554 const noLongerPendingLanes = root.pendingLanes & ~remainingLanes;555 root.pendingLanes = remainingLanes;556 // Let's try everything again557 root.suspendedLanes = 0;558 root.pingedLanes = 0;559 root.expiredLanes &= remainingLanes;560 root.mutableReadLanes &= remainingLanes;561 root.entangledLanes &= remainingLanes;562 if (enableCache) {563 const pooledCacheLanes = (root.pooledCacheLanes &= remainingLanes);564 if (pooledCacheLanes === NoLanes) {565 // None of the remaining work relies on the cache pool. Clear it so566 // subsequent requests get a new cache.567 root.pooledCache = null;568 }569 }570 const entanglements = root.entanglements;571 const eventTimes = root.eventTimes;572 const expirationTimes = root.expirationTimes;573 // Clear the lanes that no longer have pending work574 let lanes = noLongerPendingLanes;575 while (lanes > 0) {576 const index = pickArbitraryLaneIndex(lanes);577 const lane = 1 << index;578 entanglements[index] = NoLanes;579 eventTimes[index] = NoTimestamp;580 expirationTimes[index] = NoTimestamp;581 lanes &= ~lane;582 }583}584export function markRootEntangled(root: FiberRoot, entangledLanes: Lanes) {585 // In addition to entangling each of the given lanes with each other, we also586 // have to consider _transitive_ entanglements. For each lane that is already587 // entangled with *any* of the given lanes, that lane is now transitively588 // entangled with *all* the given lanes.589 //590 // Translated: If C is entangled with A, then entangling A with B also591 // entangles C with B.592 //593 // If this is hard to grasp, it might help to intentionally break this594 // function and look at the tests that fail in ReactTransition-test.js. Try595 // commenting out one of the conditions below.596 const rootEntangledLanes = (root.entangledLanes |= entangledLanes);597 const entanglements = root.entanglements;598 let lanes = rootEntangledLanes;599 while (lanes) {600 const index = pickArbitraryLaneIndex(lanes);601 const lane = 1 << index;602 if (603 // Is this one of the newly entangled lanes?604 (lane & entangledLanes) |605 // Is this lane transitively entangled with the newly entangled lanes?606 (entanglements[index] & entangledLanes)607 ) {608 entanglements[index] |= entangledLanes;609 }610 lanes &= ~lane;611 }612}613export function getBumpedLaneForHydration(614 root: FiberRoot,...
ReactFiberLane.js
Source:ReactFiberLane.js
...115 const higherPriorityLanes = updateLane - 1;116 root.suspendedLanes &= higherPriorityLanes;117 root.pingedLanes &= higherPriorityLanes;118 const eventTimes = root.eventTimes;119 const index = pickArbitraryLaneIndex(updateLane);120 eventTimes[index] = eventTime;121};122const markRootSuspended = (root, suspendedLanes) => {123 root.suspendedLanes |= suspendedLanes;124 root.pingedLanes &= ~suspendedLanes;125 const expirationTimes = root.expirationTimes;126 let lanes = suspendedLanes;127 while (lanes > 0) {128 const index = pickArbitraryLaneIndex(lanes);129 const lane = 1 << index;130 expirationTimes[index] = NoTimestamp;131 lanes &= ~lane;132 }133};134const includesSomeLane = (a, b) => (a & b) !== NoLanes;135let return_highestLanePriority = DefaultLanePriority;136const getHighestPriorityLanes = (lanes) => {137 if ((SyncLane & lanes) !== NoLanes) {138 return_highestLanePriority = SyncLanePriority;139 return SyncLane;140 }141 if ((SyncBatchedLane & lanes) !== NoLanes) {142 return_highestLanePriority = SyncBatchedLanePriority;143 return SyncBatchedLane;144 }145 if ((InputDiscreteHydrationLane & lanes) !== NoLanes) {146 return_highestLanePriority = InputDiscreteHydrationLanePriority;147 return InputDiscreteHydrationLane;148 }149 const inputDiscreteLanes = InputDiscreteLanes & lanes;150 if (inputDiscreteLanes !== NoLanes) {151 return_highestLanePriority = InputDiscreteLanePriority;152 return inputDiscreteLanes;153 }154 if ((lanes & InputContinuousHydrationLane) !== NoLanes) {155 return_highestLanePriority = InputContinuousHydrationLanePriority;156 return InputContinuousHydrationLane;157 }158 const inputContinuousLanes = InputContinuousLanes & lanes;159 if (inputContinuousLanes !== NoLanes) {160 return_highestLanePriority = InputContinuousLanePriority;161 return inputContinuousLanes;162 }163 if ((lanes & DefaultHydrationLane) !== NoLanes) {164 return_highestLanePriority = DefaultHydrationLanePriority;165 return DefaultHydrationLane;166 }167 const defaultLanes = DefaultLanes & lanes;168 if (defaultLanes !== NoLanes) {169 return_highestLanePriority = DefaultLanePriority;170 return defaultLanes;171 }172 if ((lanes & TransitionHydrationLane) !== NoLanes) {173 return_highestLanePriority = TransitionHydrationPriority;174 return TransitionHydrationLane;175 }176 const transitionLanes = TransitionLanes & lanes;177 if (transitionLanes !== NoLanes) {178 return_highestLanePriority = TransitionPriority;179 return transitionLanes;180 }181 const retryLanes = RetryLanes & lanes;182 if (retryLanes !== NoLanes) {183 return_highestLanePriority = RetryLanePriority;184 return retryLanes;185 }186 if (lanes & SelectiveHydrationLane) {187 return_highestLanePriority = SelectiveHydrationLanePriority;188 return SelectiveHydrationLane;189 }190 if ((lanes & IdleHydrationLane) !== NoLanes) {191 return_highestLanePriority = IdleHydrationLanePriority;192 return IdleHydrationLane;193 }194 const idleLanes = IdleLanes & lanes;195 if (idleLanes !== NoLanes) {196 return_highestLanePriority = IdleLanePriority;197 return idleLanes;198 }199 if ((OffscreenLane & lanes) !== NoLanes) {200 return_highestLanePriority = OffscreenLanePriority;201 return OffscreenLane;202 }203 return_highestLanePriority = DefaultLanePriority;204 return lanes;205};206const getLowestPriorityLane = (lanes) => {207 const index = 31 - Math.clz32(lanes);208 return index < 0 ? NoLanes : 1 << index;209};210const getNextLanes = (root, wipLanes) => {211 const pendingLanes = root.pendingLanes;212 if (pendingLanes === NoLanes) {213 return_highestLanePriority = NoLanePriority;214 return NoLanes;215 }216 let nextLanes = NoLanes;217 let nextLanePriority = NoLanePriority;218 const expiredLanes = root.expiredLanes;219 const suspendedLanes = root.suspendedLanes;220 const pingedLanes = root.pingedLanes;221 if (expiredLanes !== NoLanes) {222 nextLanes = expiredLanes;223 nextLanePriority = return_highestLanePriority = SyncLanePriority;224 } else {225 const nonIdlePendingLanes = pendingLanes & NonIdleLanes;226 if (nonIdlePendingLanes !== NoLanes) {227 const nonIdleUnblockedLanes = nonIdlePendingLanes & ~suspendedLanes;228 if (nonIdleUnblockedLanes !== NoLanes) {229 nextLanes = getHighestPriorityLanes(nonIdleUnblockedLanes);230 nextLanePriority = return_highestLanePriority;231 } else {232 const nonIdlePingedLanes = nonIdlePendingLanes & pingedLanes;233 if (nonIdlePingedLanes !== NoLanes) {234 nextLanes = getHighestPriorityLanes(nonIdlePingedLanes);235 nextLanePriority = return_highestLanePriority;236 }237 }238 } else {239 const unblockedLanes = pendingLanes & ~suspendedLanes;240 if (unblockedLanes !== NoLanes) {241 nextLanes = getHighestPriorityLanes(unblockedLanes);242 nextLanePriority = return_highestLanePriority;243 } else {244 if (pingedLanes !== NoLanes) {245 nextLanes = getHighestPriorityLanes(pingedLanes);246 nextLanePriority = return_highestLanePriority;247 }248 }249 }250 }251 if (nextLanes === NoLanes) {252 return NoLanes;253 }254 nextLanes = pendingLanes & ((getLowestPriorityLane(nextLanes) << 1) - 1);255 if (256 wipLanes !== NoLanes &&257 wipLanes !== nextLanes &&258 (wipLanes & suspendedLanes) === NoLanes259 ) {260 getHighestPriorityLanes(wipLanes);261 const wipLanePriority = return_highestLanePriority;262 if (nextLanePriority <= wipLanePriority) {263 return wipLanes;264 } else {265 return_highestLanePriority = nextLanePriority;266 }267 }268 const entangledLanes = root.entangledLanes;269 if (entangledLanes !== NoLanes) {270 const entanglements = root.entanglements;271 let lanes = nextLanes & entangledLanes;272 while (lanes > 0) {273 const index = pickArbitraryLaneIndex(lanes);274 const lane = 1 << index;275 nextLanes |= entanglements[index];276 lanes &= ~lane;277 }278 }279 return nextLanes;280};281const markRootFinished = (root, remainingLanes) => {282 const noLongerPendingLanes = root.pendingLanes & ~remainingLanes;283 root.pendingLanes = remainingLanes;284 root.suspendedLanes = 0;285 root.pingedLanes = 0;286 root.expiredLanes &= remainingLanes;287 root.mutableReadLanes &= remainingLanes;288 root.entangledLanes &= remainingLanes;289 const entanglements = root.entanglements;290 const eventTimes = root.eventTimes;291 const expirationTimes = root.expirationTimes;292 let lanes = noLongerPendingLanes;293 while (lanes > 0) {294 const index = pickArbitraryLaneIndex(lanes);295 const lane = 1 << index;296 entanglements[index] = NoLanes;297 eventTimes[index] = NoTimestamp;298 expirationTimes[index] = NoTimestamp;299 lanes &= ~lane;300 }301};302const hasDiscreteLanes = (lanes) => (lanes & InputDiscreteLanes) !== NoLanes;303const computeExpirationTime = (lane, currentTime) => {304 getHighestPriorityLanes(lane);305 const priority = return_highestLanePriority;306 if (priority >= InputContinuousLanePriority) {307 return currentTime + 250;308 } else if (priority >= TransitionPriority) {309 return currentTime + 5000;310 } else {311 return NoTimestamp;312 }313};314const markStarvedLanesAsExpired = (root, currentTime) => {315 const pendingLanes = root.pendingLanes;316 const suspendedLanes = root.suspendedLanes;317 const pingedLanes = root.pingedLanes;318 const expirationTimes = root.expirationTimes;319 let lanes = pendingLanes;320 while (lanes > 0) {321 const index = pickArbitraryLaneIndex(lanes);322 const lane = 1 << index;323 const expirationTime = expirationTimes[index];324 if (expirationTime === NoTimestamp) {325 if (326 (lane & suspendedLanes) === NoLanes ||327 (lane & pingedLanes) !== NoLanes328 ) {329 expirationTimes[index] = computeExpirationTime(lane, currentTime);330 }331 } else if (expirationTime <= currentTime) {332 root.expiredLanes |= lane;333 }334 lanes &= ~lane;335 }...
Using AI Code Generation
1const { Playwright } = require('playwright-core');2const { chromium } = require('playwright-core');3const playwright = new Playwright(__dirname);4const browser = await playwright.chromium.launch({5});6const context = await browser.newContext();7const page = await context.newPage();8await page.waitForTimeout(10000);9await browser.close();
Using AI Code Generation
1const {pickArbitraryLaneIndex} = require('playwright/lib/utils/lanes.js');2const lanes = ['a', 'b', 'c', 'd'];3const lane = pickArbitraryLaneIndex(lanes);4console.log(lane);5const {pickArbitraryLaneIndex} = require('playwright/lib/utils/lanes.js');6const lanes = ['a', 'b', 'c', 'd'];7const lane = pickArbitraryLaneIndex(lanes);8console.log(lane);9const {pickArbitraryLaneIndex} = require('playwright/lib/utils/lanes.js');10const lanes = ['a', 'b', 'c', 'd'];11const lane = pickArbitraryLaneIndex(lanes);12console.log(lane);13const {pickArbitraryLaneIndex} = require('playwright/lib/utils/lanes.js');14const lanes = ['a', 'b', 'c', 'd'];15const lane = pickArbitraryLaneIndex(lanes);16console.log(lane);17const {pickArbitraryLaneIndex} = require('playwright/lib/utils/lanes.js');18const lanes = ['a', 'b', 'c', 'd'];19const lane = pickArbitraryLaneIndex(lanes);20console.log(lane);21const {pickArbitraryLaneIndex} = require('playwright/lib/utils/lanes.js');22const lanes = ['a', 'b', 'c', 'd'];23const lane = pickArbitraryLaneIndex(lanes);24console.log(lane);25const {pickArbitraryLaneIndex} = require('playwright/lib/utils/lanes.js');26const lanes = ['a', 'b', 'c', 'd'];27const lane = pickArbitraryLaneIndex(lanes);28console.log(lane);
Using AI Code Generation
1const { pickArbitraryLaneIndex } = require('playwright/lib/utils/lanes');2const index = pickArbitraryLaneIndex(2);3console.log(index);4const { pickArbitraryLaneIndex } = require('playwright/lib/utils/lanes');5const index = pickArbitraryLaneIndex(3);6console.log(index);7const { pickArbitraryLaneIndex } = require('playwright/lib/utils/lanes');8const index = pickArbitraryLaneIndex(4);9console.log(index);10const { pickArbitraryLaneIndex } = require('playwright/lib/utils/lanes');11const index = pickArbitraryLaneIndex(5);12console.log(index);13const { pickArbitraryLaneIndex } = require('playwright/lib/utils/lanes');14const index = pickArbitraryLaneIndex(6);15console.log(index);16const { pickArbitraryLaneIndex } = require('playwright/lib/utils/lanes');17const index = pickArbitraryLaneIndex(7);18console.log(index);19const { pickArbitraryLaneIndex } = require('playwright/lib/utils/lanes');20const index = pickArbitraryLaneIndex(8);21console.log(index);22const { pickArbitraryLaneIndex } = require('playwright/lib/utils/lanes');23const index = pickArbitraryLaneIndex(9);24console.log(index);
Using AI Code Generation
1const {pickArbitraryLaneIndex} = require('@playwright/test/lib/runner/parallel');2const index = pickArbitraryLaneIndex();3console.log(index);4 throw err;5 throw err;6 throw err;7 throw err;8 throw err;9 throw err;10 throw err;11 throw err;
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.
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- 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.
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- 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.
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- 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.
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