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How to use getEqualOrHigherPriorityLanes method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberLane.old.js

Source:ReactFiberLane.old.js

...264    return NoLanes;265  }266  // If there are higher priority lanes, we'll include them even if they267  // are suspended.268  nextLanes = pendingLanes & getEqualOrHigherPriorityLanes(nextLanes);269  // If we're already in the middle of a render, switching lanes will interrupt270  // it and we'll lose our progress. We should only do this if the new lanes are271  // higher priority.272  if (273    wipLanes !== NoLanes &&274    wipLanes !== nextLanes &&275    // If we already suspended with a delay, then interrupting is fine. Don't276    // bother waiting until the root is complete.277    (wipLanes & suspendedLanes) === NoLanes278  ) {279    getHighestPriorityLanes(wipLanes);280    const wipLanePriority = return_highestLanePriority;281    if (nextLanePriority <= wipLanePriority) {282      return wipLanes;283    } else {284      return_highestLanePriority = nextLanePriority;285    }286  }287  // Check for entangled lanes and add them to the batch.288  //289  // A lane is said to be entangled with another when it's not allowed to render290  // in a batch that does not also include the other lane. Typically we do this291  // when multiple updates have the same source, and we only want to respond to292  // the most recent event from that source.293  //294  // Note that we apply entanglements *after* checking for partial work above.295  // This means that if a lane is entangled during an interleaved event while296  // it's already rendering, we won't interrupt it. This is intentional, since297  // entanglement is usually "best effort": we'll try our best to render the298  // lanes in the same batch, but it's not worth throwing out partially299  // completed work in order to do it.300  //301  // For those exceptions where entanglement is semantically important, like302  // useMutableSource, we should ensure that there is no partial work at the303  // time we apply the entanglement.304  const entangledLanes = root.entangledLanes;305  if (entangledLanes !== NoLanes) {306    const entanglements = root.entanglements;307    let lanes = nextLanes & entangledLanes;308    while (lanes > 0) {309      const index = pickArbitraryLaneIndex(lanes);310      const lane = 1 << index;311      nextLanes |= entanglements[index];312      lanes &= ~lane;313    }314  }315  return nextLanes;316}317export function getMostRecentEventTime(root: FiberRoot, lanes: Lanes): number {318  const eventTimes = root.eventTimes;319  let mostRecentEventTime = NoTimestamp;320  while (lanes > 0) {321    const index = pickArbitraryLaneIndex(lanes);322    const lane = 1 << index;323    const eventTime = eventTimes[index];324    if (eventTime > mostRecentEventTime) {325      mostRecentEventTime = eventTime;326    }327    lanes &= ~lane;328  }329  return mostRecentEventTime;330}331function computeExpirationTime(lane: Lane, currentTime: number) {332  // TODO: Expiration heuristic is constant per lane, so could use a map.333  getHighestPriorityLanes(lane);334  const priority = return_highestLanePriority;335  if (priority >= InputContinuousLanePriority) {336    // User interactions should expire slightly more quickly.337    //338    // NOTE: This is set to the corresponding constant as in Scheduler.js. When339    // we made it larger, a product metric in www regressed, suggesting there's340    // a user interaction that's being starved by a series of synchronous341    // updates. If that theory is correct, the proper solution is to fix the342    // starvation. However, this scenario supports the idea that expiration343    // times are an important safeguard when starvation does happen.344    //345    // Also note that, in the case of user input specifically, this will soon no346    // longer be an issue because we plan to make user input synchronous by347    // default (until you enter `startTransition`, of course.)348    //349    // If weren't planning to make these updates synchronous soon anyway, I350    // would probably make this number a configurable parameter.351    return currentTime + 250;352  } else if (priority >= TransitionPriority) {353    return currentTime + 5000;354  } else {355    // Anything idle priority or lower should never expire.356    return NoTimestamp;357  }358}359export function markStarvedLanesAsExpired(360  root: FiberRoot,361  currentTime: number,362): void {363  // TODO: This gets called every time we yield. We can optimize by storing364  // the earliest expiration time on the root. Then use that to quickly bail out365  // of this function.366  const pendingLanes = root.pendingLanes;367  const suspendedLanes = root.suspendedLanes;368  const pingedLanes = root.pingedLanes;369  const expirationTimes = root.expirationTimes;370  // Iterate through the pending lanes and check if we've reached their371  // expiration time. If so, we'll assume the update is being starved and mark372  // it as expired to force it to finish.373  let lanes = pendingLanes;374  while (lanes > 0) {375    const index = pickArbitraryLaneIndex(lanes);376    const lane = 1 << index;377    const expirationTime = expirationTimes[index];378    if (expirationTime === NoTimestamp) {379      // Found a pending lane with no expiration time. If it's not suspended, or380      // if it's pinged, assume it's CPU-bound. Compute a new expiration time381      // using the current time.382      if (383        (lane & suspendedLanes) === NoLanes ||384        (lane & pingedLanes) !== NoLanes385      ) {386        // Assumes timestamps are monotonically increasing.387        expirationTimes[index] = computeExpirationTime(lane, currentTime);388      }389    } else if (expirationTime <= currentTime) {390      // This lane expired391      root.expiredLanes |= lane;392    }393    lanes &= ~lane;394  }395}396// This returns the highest priority pending lanes regardless of whether they397// are suspended.398export function getHighestPriorityPendingLanes(root: FiberRoot) {399  return getHighestPriorityLanes(root.pendingLanes);400}401export function getLanesToRetrySynchronouslyOnError(root: FiberRoot): Lanes {402  const everythingButOffscreen = root.pendingLanes & ~OffscreenLane;403  if (everythingButOffscreen !== NoLanes) {404    return everythingButOffscreen;405  }406  if (everythingButOffscreen & OffscreenLane) {407    return OffscreenLane;408  }409  return NoLanes;410}411export function returnNextLanesPriority() {412  return return_highestLanePriority;413}414export function includesNonIdleWork(lanes: Lanes) {415  return (lanes & NonIdleLanes) !== NoLanes;416}417export function includesOnlyRetries(lanes: Lanes) {418  return (lanes & RetryLanes) === lanes;419}420export function includesOnlyTransitions(lanes: Lanes) {421  return (lanes & TransitionLanes) === lanes;422}423// To ensure consistency across multiple updates in the same event, this should424// be a pure function, so that it always returns the same lane for given inputs.425export function findUpdateLane(426  lanePriority: LanePriority,427  wipLanes: Lanes,428): Lane {429  switch (lanePriority) {430    case NoLanePriority:431      break;432    case SyncLanePriority:433      return SyncLane;434    case SyncBatchedLanePriority:435      return SyncBatchedLane;436    case InputDiscreteLanePriority: {437      const lane = pickArbitraryLane(InputDiscreteLanes & ~wipLanes);438      if (lane === NoLane) {439        // Shift to the next priority level440        return findUpdateLane(InputContinuousLanePriority, wipLanes);441      }442      return lane;443    }444    case InputContinuousLanePriority: {445      const lane = pickArbitraryLane(InputContinuousLanes & ~wipLanes);446      if (lane === NoLane) {447        // Shift to the next priority level448        return findUpdateLane(DefaultLanePriority, wipLanes);449      }450      return lane;451    }452    case DefaultLanePriority: {453      let lane = pickArbitraryLane(DefaultLanes & ~wipLanes);454      if (lane === NoLane) {455        // If all the default lanes are already being worked on, look for a456        // lane in the transition range.457        lane = pickArbitraryLane(TransitionLanes & ~wipLanes);458        if (lane === NoLane) {459          // All the transition lanes are taken, too. This should be very460          // rare, but as a last resort, pick a default lane. This will have461          // the effect of interrupting the current work-in-progress render.462          lane = pickArbitraryLane(DefaultLanes);463        }464      }465      return lane;466    }467    case TransitionPriority: // Should be handled by findTransitionLane instead468    case RetryLanePriority: // Should be handled by findRetryLane instead469      break;470    case IdleLanePriority:471      let lane = pickArbitraryLane(IdleLanes & ~wipLanes);472      if (lane === NoLane) {473        lane = pickArbitraryLane(IdleLanes);474      }475      return lane;476    default:477      // The remaining priorities are not valid for updates478      break;479  }480  invariant(481    false,482    'Invalid update priority: %s. This is a bug in React.',483    lanePriority,484  );485}486// To ensure consistency across multiple updates in the same event, this should487// be pure function, so that it always returns the same lane for given inputs.488export function findTransitionLane(wipLanes: Lanes, pendingLanes: Lanes): Lane {489  // First look for lanes that are completely unclaimed, i.e. have no490  // pending work.491  let lane = pickArbitraryLane(TransitionLanes & ~pendingLanes);492  if (lane === NoLane) {493    // If all lanes have pending work, look for a lane that isn't currently494    // being worked on.495    lane = pickArbitraryLane(TransitionLanes & ~wipLanes);496    if (lane === NoLane) {497      // If everything is being worked on, pick any lane. This has the498      // effect of interrupting the current work-in-progress.499      lane = pickArbitraryLane(TransitionLanes);500    }501  }502  return lane;503}504// To ensure consistency across multiple updates in the same event, this should505// be pure function, so that it always returns the same lane for given inputs.506export function findRetryLane(wipLanes: Lanes): Lane {507  // This is a fork of `findUpdateLane` designed specifically for Suspense508  // "retries" â a special update that attempts to flip a Suspense boundary509  // from its placeholder state to its primary/resolved state.510  let lane = pickArbitraryLane(RetryLanes & ~wipLanes);511  if (lane === NoLane) {512    lane = pickArbitraryLane(RetryLanes);513  }514  return lane;515}516function getHighestPriorityLane(lanes: Lanes) {517  return lanes & -lanes;518}519function getLowestPriorityLane(lanes: Lanes): Lane {520  // This finds the most significant non-zero bit.521  const index = 31 - clz32(lanes);522  return index < 0 ? NoLanes : 1 << index;523}524function getEqualOrHigherPriorityLanes(lanes: Lanes | Lane): Lanes {525  return (getLowestPriorityLane(lanes) << 1) - 1;526}527export function pickArbitraryLane(lanes: Lanes): Lane {528  // This wrapper function gets inlined. Only exists so to communicate that it529  // doesn't matter which bit is selected; you can pick any bit without530  // affecting the algorithms where its used. Here I'm using531  // getHighestPriorityLane because it requires the fewest operations.532  return getHighestPriorityLane(lanes);533}534function pickArbitraryLaneIndex(lanes: Lanes) {535  return 31 - clz32(lanes);536}537function laneToIndex(lane: Lane) {538  return pickArbitraryLaneIndex(lane);...

ReactFiberLane.new.js

Source:ReactFiberLane.new.js

...264    return NoLanes;265  }266  // If there are higher priority lanes, we'll include them even if they267  // are suspended.268  nextLanes = pendingLanes & getEqualOrHigherPriorityLanes(nextLanes);269  // If we're already in the middle of a render, switching lanes will interrupt270  // it and we'll lose our progress. We should only do this if the new lanes are271  // higher priority.272  if (273    wipLanes !== NoLanes &&274    wipLanes !== nextLanes &&275    // If we already suspended with a delay, then interrupting is fine. Don't276    // bother waiting until the root is complete.277    (wipLanes & suspendedLanes) === NoLanes278  ) {279    getHighestPriorityLanes(wipLanes);280    const wipLanePriority = return_highestLanePriority;281    if (nextLanePriority <= wipLanePriority) {282      return wipLanes;283    } else {284      return_highestLanePriority = nextLanePriority;285    }286  }287  // Check for entangled lanes and add them to the batch.288  //289  // A lane is said to be entangled with another when it's not allowed to render290  // in a batch that does not also include the other lane. Typically we do this291  // when multiple updates have the same source, and we only want to respond to292  // the most recent event from that source.293  //294  // Note that we apply entanglements *after* checking for partial work above.295  // This means that if a lane is entangled during an interleaved event while296  // it's already rendering, we won't interrupt it. This is intentional, since297  // entanglement is usually "best effort": we'll try our best to render the298  // lanes in the same batch, but it's not worth throwing out partially299  // completed work in order to do it.300  //301  // For those exceptions where entanglement is semantically important, like302  // useMutableSource, we should ensure that there is no partial work at the303  // time we apply the entanglement.304  const entangledLanes = root.entangledLanes;305  if (entangledLanes !== NoLanes) {306    const entanglements = root.entanglements;307    let lanes = nextLanes & entangledLanes;308    while (lanes > 0) {309      const index = pickArbitraryLaneIndex(lanes);310      const lane = 1 << index;311      nextLanes |= entanglements[index];312      lanes &= ~lane;313    }314  }315  return nextLanes;316}317export function getMostRecentEventTime(root: FiberRoot, lanes: Lanes): number {318  const eventTimes = root.eventTimes;319  let mostRecentEventTime = NoTimestamp;320  while (lanes > 0) {321    const index = pickArbitraryLaneIndex(lanes);322    const lane = 1 << index;323    const eventTime = eventTimes[index];324    if (eventTime > mostRecentEventTime) {325      mostRecentEventTime = eventTime;326    }327    lanes &= ~lane;328  }329  return mostRecentEventTime;330}331function computeExpirationTime(lane: Lane, currentTime: number) {332  // TODO: Expiration heuristic is constant per lane, so could use a map.333  getHighestPriorityLanes(lane);334  const priority = return_highestLanePriority;335  if (priority >= InputContinuousLanePriority) {336    // User interactions should expire slightly more quickly.337    //338    // NOTE: This is set to the corresponding constant as in Scheduler.js. When339    // we made it larger, a product metric in www regressed, suggesting there's340    // a user interaction that's being starved by a series of synchronous341    // updates. If that theory is correct, the proper solution is to fix the342    // starvation. However, this scenario supports the idea that expiration343    // times are an important safeguard when starvation does happen.344    //345    // Also note that, in the case of user input specifically, this will soon no346    // longer be an issue because we plan to make user input synchronous by347    // default (until you enter `startTransition`, of course.)348    //349    // If weren't planning to make these updates synchronous soon anyway, I350    // would probably make this number a configurable parameter.351    return currentTime + 250;352  } else if (priority >= TransitionPriority) {353    return currentTime + 5000;354  } else {355    // Anything idle priority or lower should never expire.356    return NoTimestamp;357  }358}359export function markStarvedLanesAsExpired(360  root: FiberRoot,361  currentTime: number,362): void {363  // TODO: This gets called every time we yield. We can optimize by storing364  // the earliest expiration time on the root. Then use that to quickly bail out365  // of this function.366  const pendingLanes = root.pendingLanes;367  const suspendedLanes = root.suspendedLanes;368  const pingedLanes = root.pingedLanes;369  const expirationTimes = root.expirationTimes;370  // Iterate through the pending lanes and check if we've reached their371  // expiration time. If so, we'll assume the update is being starved and mark372  // it as expired to force it to finish.373  let lanes = pendingLanes;374  while (lanes > 0) {375    const index = pickArbitraryLaneIndex(lanes);376    const lane = 1 << index;377    const expirationTime = expirationTimes[index];378    if (expirationTime === NoTimestamp) {379      // Found a pending lane with no expiration time. If it's not suspended, or380      // if it's pinged, assume it's CPU-bound. Compute a new expiration time381      // using the current time.382      if (383        (lane & suspendedLanes) === NoLanes ||384        (lane & pingedLanes) !== NoLanes385      ) {386        // Assumes timestamps are monotonically increasing.387        expirationTimes[index] = computeExpirationTime(lane, currentTime);388      }389    } else if (expirationTime <= currentTime) {390      // This lane expired391      root.expiredLanes |= lane;392    }393    lanes &= ~lane;394  }395}396// This returns the highest priority pending lanes regardless of whether they397// are suspended.398export function getHighestPriorityPendingLanes(root: FiberRoot) {399  return getHighestPriorityLanes(root.pendingLanes);400}401export function getLanesToRetrySynchronouslyOnError(root: FiberRoot): Lanes {402  const everythingButOffscreen = root.pendingLanes & ~OffscreenLane;403  if (everythingButOffscreen !== NoLanes) {404    return everythingButOffscreen;405  }406  if (everythingButOffscreen & OffscreenLane) {407    return OffscreenLane;408  }409  return NoLanes;410}411export function returnNextLanesPriority() {412  return return_highestLanePriority;413}414export function includesNonIdleWork(lanes: Lanes) {415  return (lanes & NonIdleLanes) !== NoLanes;416}417export function includesOnlyRetries(lanes: Lanes) {418  return (lanes & RetryLanes) === lanes;419}420export function includesOnlyTransitions(lanes: Lanes) {421  return (lanes & TransitionLanes) === lanes;422}423// To ensure consistency across multiple updates in the same event, this should424// be a pure function, so that it always returns the same lane for given inputs.425export function findUpdateLane(426  lanePriority: LanePriority,427  wipLanes: Lanes,428): Lane {429  switch (lanePriority) {430    case NoLanePriority:431      break;432    case SyncLanePriority:433      return SyncLane;434    case SyncBatchedLanePriority:435      return SyncBatchedLane;436    case InputDiscreteLanePriority: {437      const lane = pickArbitraryLane(InputDiscreteLanes & ~wipLanes);438      if (lane === NoLane) {439        // Shift to the next priority level440        return findUpdateLane(InputContinuousLanePriority, wipLanes);441      }442      return lane;443    }444    case InputContinuousLanePriority: {445      const lane = pickArbitraryLane(InputContinuousLanes & ~wipLanes);446      if (lane === NoLane) {447        // Shift to the next priority level448        return findUpdateLane(DefaultLanePriority, wipLanes);449      }450      return lane;451    }452    case DefaultLanePriority: {453      let lane = pickArbitraryLane(DefaultLanes & ~wipLanes);454      if (lane === NoLane) {455        // If all the default lanes are already being worked on, look for a456        // lane in the transition range.457        lane = pickArbitraryLane(TransitionLanes & ~wipLanes);458        if (lane === NoLane) {459          // All the transition lanes are taken, too. This should be very460          // rare, but as a last resort, pick a default lane. This will have461          // the effect of interrupting the current work-in-progress render.462          lane = pickArbitraryLane(DefaultLanes);463        }464      }465      return lane;466    }467    case TransitionPriority: // Should be handled by findTransitionLane instead468    case RetryLanePriority: // Should be handled by findRetryLane instead469      break;470    case IdleLanePriority:471      let lane = pickArbitraryLane(IdleLanes & ~wipLanes);472      if (lane === NoLane) {473        lane = pickArbitraryLane(IdleLanes);474      }475      return lane;476    default:477      // The remaining priorities are not valid for updates478      break;479  }480  invariant(481    false,482    'Invalid update priority: %s. This is a bug in React.',483    lanePriority,484  );485}486// To ensure consistency across multiple updates in the same event, this should487// be pure function, so that it always returns the same lane for given inputs.488export function findTransitionLane(wipLanes: Lanes, pendingLanes: Lanes): Lane {489  // First look for lanes that are completely unclaimed, i.e. have no490  // pending work.491  let lane = pickArbitraryLane(TransitionLanes & ~pendingLanes);492  if (lane === NoLane) {493    // If all lanes have pending work, look for a lane that isn't currently494    // being worked on.495    lane = pickArbitraryLane(TransitionLanes & ~wipLanes);496    if (lane === NoLane) {497      // If everything is being worked on, pick any lane. This has the498      // effect of interrupting the current work-in-progress.499      lane = pickArbitraryLane(TransitionLanes);500    }501  }502  return lane;503}504// To ensure consistency across multiple updates in the same event, this should505// be pure function, so that it always returns the same lane for given inputs.506export function findRetryLane(wipLanes: Lanes): Lane {507  // This is a fork of `findUpdateLane` designed specifically for Suspense508  // "retries" â a special update that attempts to flip a Suspense boundary509  // from its placeholder state to its primary/resolved state.510  let lane = pickArbitraryLane(RetryLanes & ~wipLanes);511  if (lane === NoLane) {512    lane = pickArbitraryLane(RetryLanes);513  }514  return lane;515}516function getHighestPriorityLane(lanes: Lanes) {517  return lanes & -lanes;518}519function getLowestPriorityLane(lanes: Lanes): Lane {520  // This finds the most significant non-zero bit.521  const index = 31 - clz32(lanes);522  return index < 0 ? NoLanes : 1 << index;523}524function getEqualOrHigherPriorityLanes(lanes: Lanes | Lane): Lanes {525  return (getLowestPriorityLane(lanes) << 1) - 1;526}527export function pickArbitraryLane(lanes: Lanes): Lane {528  // This wrapper function gets inlined. Only exists so to communicate that it529  // doesn't matter which bit is selected; you can pick any bit without530  // affecting the algorithms where its used. Here I'm using531  // getHighestPriorityLane because it requires the fewest operations.532  return getHighestPriorityLane(lanes);533}534function pickArbitraryLaneIndex(lanes: Lanes) {535  return 31 - clz32(lanes);536}537function laneToIndex(lane: Lane) {538  return pickArbitraryLaneIndex(lane);...

ReactFiberLane.js

Source:ReactFiberLane.js

...141 *142 *143 * æä»¥è¿ä¸ªå½æ°æ¬è´¨ä¸æ¯åæ¾å°lanesä¸å¼ä¸º1çæé«ä½ï¼ è¿ä½è®¾ç½®ä¸º0ï¼ å¶åææä½é½è®¾ä¸º1144 */145function getEqualOrHigherPriorityLanes(lanes) {146  return (getLowestPriorityLane(lanes) << 1) - 1;147}148export function createLaneMap(initial) {149  return new Array(TotalLanes).fill(initial);150}151export function mergeLanes(a, b) {152  return a | b;153}154function pickArbitraryLaneIndex(lanes) {155  return 31 - Math.clz32(lanes);156}157function laneToIndex(lane) {158  return pickArbitraryLaneIndex(lane);159}160export function includesSomeLane(a, b) {161  return (a & b) !== NoLanes;162}163export function markRootUpdated(root, updateLane, eventTime) {164  // å½åæ´æ°çlaneï¼ ä¸fiber root node.pendingLanesåæ®µmerge165  root.pendingLanes |= updateLane;166  // TODO: Theoretically, any update to any lane can unblock any other lane. But167  // it's not practical to try every single possible combination. We need a168  // heuristic to decide which lanes to attempt to render, and in which batches.169  // For now, we use the same heuristic as in the old ExpirationTimes model:170  // retry any lane at equal or lower priority, but don't try updates at higher171  // priority without also including the lower priority updates. This works well172  // when considering updates across different priority levels, but isn't173  // sufficient for updates within the same priority, since we want to treat174  // those updates as parallel.175  // Unsuspend any update at equal or lower priority.176  // å¯¹äº177  //   ä»»ä½ [suspend] çï¼ [ä¼åçº§æ¯å½åupdateLaneä½ææå¹³]çupdate178  // è¿éä¼åæ¶ä»ä»¬çæåç¶æï¼179  const higherPriorityLanes = updateLane - 1; // Turns 0b1000 into 0b0111180  // è¿éè¿æ¯ä¸æï¼ å³äºlaneçæä½ä¸ï¼ æä½æçé»è¾è¿ç®181  // å¤ªæ½è±¡äº...182  root.suspendedLanes &= higherPriorityLanes;183  root.pingedLanes &= higherPriorityLanes;184  const eventTimes = root.eventTimes;185  const index = laneToIndex(updateLane);186  // We can always overwrite an existing timestamp because we prefer the most187  // recent event, and we assume time is monotonically increasingï¼åè°éå¢ï¼.188  eventTimes[index] = eventTime;189}190export function getNextLanes(root, wipLanes) {191  // é¦æ¬¡æ¸²ææ¶ï¼ å¨æ¬æä»¶27è¡ï¼ è®¾ç½®äºrootä¸çpendingLanesä¸º1192  const pendingLanes = root.pendingLanes;193  // Early bailout if there's no pending work left.194  if (pendingLanes === NoLanes) {195    return_highestLanePriority = NoLanePriority;196    return NoLanes;197  }198  let nextLanes = NoLanes;199  let nextLanePriority = NoLanePriority;200  // åæ¬¡æ¸²ææ¶ï¼ ä»¥ä¸å ä¸ªlanesåä¸º0201  const expiredLanes = root.expiredLanes;202  const suspendedLanes = root.suspendedLanes;203  const pingedLanes = root.pingedLanes;204  // Check if any work has expired.205  // å¦ææè¿æçlaneï¼ ä¸ä¸ä¸ªlaneå³ä¸ºè¿ä¸ªè¿æçlaneï¼ ä¸ä¸ä¸ªlaneä¼åçº§å°±æ¯åæ¥laneä¼åçº§ = 15206  // åæ¬¡æ¸²ææ¶ä¸åºè¯¥æè¿ælanes207  if (expiredLanes !== NoLanes) {208    nextLanes = expiredLanes;209    nextLanePriority = return_highestLanePriority = SyncLanePriority;210  } else {211    // Do not work on any idle work until all the non-idle work has finished,212    // even if the work is suspended.213    // æä½ä¸è¿ç®ååºæææ£å¨è¿è¡ä¸çï¼ ä¸ä¸å¨idle lanesä¸çlanes214    const nonIdlePendingLanes = pendingLanes & NonIdleLanes;215    if (nonIdlePendingLanes !== NoLanes) {216      // å¦æåå¨å·¥ä½217      // è·æä½ååçsuspendedLanesæä½ä¸è¿ç®ï¼ ä¹å°±æ¯ä»éidleä»»å¡ä¸åè¿æ»¤ææææèµ·çlanes218      const nonIdleUnblockedLanes = nonIdlePendingLanes & ~suspendedLanes;219      if (nonIdleUnblockedLanes !== NoLanes) {220        // æ£å¦åéåæç¤ºçï¼ ç°å¨çlanesæ¯ææçéidleï¼ éblockedçlanesäº221        // getHighestPriorityLanesä½¿ç¨ä¸ç³»åifï¼ æ¾å°å¨è¿äºlanesä¸ï¼ ä¼åçº§æé«çlanes222        // SyncLane > SyncBatchedLane > InputDiscreteHydrationLane > inputDiscreteLanes > ... > idleLanes >  OffscreenLane223        // åæ¬¡æ¸²æåºè¯¥æ¯è¿æ¡åè·¯224        nextLanes = getHighestPriorityLanes(nonIdleUnblockedLanes);225        nextLanePriority = return_highestLanePriority;226      } else {227        // è¥ææçéidle lanesé½æ¯suspendedLanes228        const nonIdlePingedLanes = nonIdlePendingLanes & pingedLanes;229        if (nonIdlePingedLanes !== NoLanes) {230          // åçè¿äºlaneséé¢ææ²¡æpingedLanes231          // å¦ææï¼ ä»è¿äºlanesä¸æ¾å°æé«ä¼åçº§çlanes232          nextLanes = getHighestPriorityLanes(nonIdlePingedLanes);233          nextLanePriority = return_highestLanePriority;234        }235      }236    } else {237      // The only remaining work is Idle.238      // å¦æåªåå¨idle lanes239      // åä¸é¢ä¸æ ·ï¼ ä»è¿äºlaneséé¢åéæ©ææçésuspended Lanesä¸ä¼åçº§æé«çï¼240      const unblockedLanes = pendingLanes & ~suspendedLanes;241      if (unblockedLanes !== NoLanes) {242        nextLanes = getHighestPriorityLanes(unblockedLanes);243        nextLanePriority = return_highestLanePriority;244      } else {245        // è¿éæä¸ªå°ç»èï¼ ä¸åç¨pending lanesåpinged lanesåæä½ä¸äº246        // å¶å®å°äºè¿ä¸ªåæ¯ï¼ æä»¬å·²ç»å¯ä»¥å¤å®ï¼ å©ä¸çlanes é½æ¯ pinged lanes, æä»¥æ éååä¸æ¬¡ä½è¿ç®äº247        if (pingedLanes !== NoLanes) {248          nextLanes = getHighestPriorityLanes(pingedLanes);249          nextLanePriority = return_highestLanePriority;250        }251      }252    }253  }254  // åªæå¨è¢«æèµ·æ¶æä¼åºç°è¿ç§ç¶æ255  if (nextLanes === NoLanes) {256    // This should only be reachable if we're suspended257    // TODO: Consider warning in this path if a fallback timer is not scheduled.258    return NoLanes;259  }260  // If there are higher priority lanes, we'll include them even if they261  // are suspended.262  // getEqualOrHigherPriorityLanes åå¨nextLanesä¸æ¾å°ä¼åçº§æä½çlaneï¼ ç¶åå·¦ç§»1ä½åå1263  // é¦æ¬¡æ¸²ææ¶æ¤å¤æ²¡æå½±åï¼ ç»æä¾ç¶æ¶ nextLanes = SyncLane264  // æ¢å¥è¯è¯´ï¼ æ²¡ææ¯SyncLaneä¼åçº§æ´é«çlaneäº265  nextLanes = pendingLanes & getEqualOrHigherPriorityLanes(nextLanes);266  // If we're already in the middle of a render, switching lanes will interrupt267  // it and we'll lose our progress. We should only do this if the new lanes are268  // higher priority.269  // åæ¬¡æ¸²ææ¶ï¼ wipLanesåºè¯¥æ¯0ï¼ å ä¸ºæ¤æ¶è¿æ²¡æä»»ä½âwork in progressâå·¥ä½å270  // è¥ä¸å¨åæ¬¡æ¸²æï¼ ä¸wipLanesä¸æ¯NoLanes, è¿è¯´æç°å¨æ£å¨renderé¶æ®µ, å¦ææ¤æ¶éæ°éæ©lanesä¼å¯¼è´271  // è¿ä¸ªå¨è¿è¡çrenderå·¥ä½è¢«ææï¼ æä»¥æä»¬ä»å½æ°çå·¥ä½ä¼åçº§é«äºæ£å¨è¿è¡çå·¥ä½æ¶æéæ°éæ©lanes272  // å¦åè¿åæ£å¨è¿è¡ä¸çlanes273  if (274    wipLanes !== NoLanes &&275    wipLanes !== nextLanes &&276    // If we already suspended with a delay, then interrupting is fine. Don't277    // bother waiting until the root is complete.278    (wipLanes & suspendedLanes) === NoLanes279  ) {...

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  const lanes = await page._getEqualOrHigherPriorityLanes();7  console.log(lanes);8  await browser.close();9})();

Using AI Code Generation

1const { getEqualOrHigherPriorityLanes } = require('playwright/lib/utils/lanes');2const { getEqualOrHigherPriorityLanes } = require('playwright/lib/utils/lanes');3const lanes = getEqualOrHigherPriorityLanes('user-blocking');4console.log(lanes);5lanes = getEqualOrHigherPriorityLanes('normal');6console.log(lanes);7lanes = getEqualOrHigherPriorityLanes('hidden');8console.log(lanes);9lanes = getEqualOrHigherPriorityLanes('idle');10console.log(lanes);11lanes = getEqualOrHigherPriorityLanes('offscreen');12console.log(lanes);13const { getEqualOrHigherPriorityLanes } = require('playwright/lib/utils/lanes');14const lanes = getEqualOrHigherPriorityLanes('user-blocking');15console.log(lanes);16lanes = getEqualOrHigherPriorityLanes('normal');17console.log(lanes);18lanes = getEqualOrHigherPriorityLanes('hidden');19console.log(lanes);20lanes = getEqualOrHigherPriorityLanes('idle');21console.log(lanes);22lanes = getEqualOrHigherPriorityLanes('offscreen');23console.log(lanes);24const { getEqualOrHigherPriorityLanes } = require('playwright/lib/utils/lanes');25const lanes = getEqualOrHigherPriorityLanes('user-blocking');26console.log(lanes);27lanes = getEqualOrHigherPriorityLanes('normal');28console.log(lanes);

Using AI Code Generation

1const { getEqualOrHigherPriorityLanes } = require('playwright/lib/server/frames');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 frame = page.mainFrame();8  const lanes = getEqualOrHigherPriorityLanes(frame);9  console.log(lanes);10  await browser.close();11})();12[ Lane {13    _page: Page {14      _browser: Browser {15      },

Using AI Code Generation

1const playwright = require('playwright');2const { getEqualOrHigherPriorityLanes } = require('playwright/lib/server/supplements/recorder/recorderSupplement');3const { Page } = require('playwright/lib/server/page');4const { Frame } = require('playwright/lib/server/frames');5const { JSHandle } = require('playwright/lib/server/javascript');6const { ElementHandle } = require('playwright/lib/server/elementHandler');7const { Worker } = require('playwright/lib/server/worker');8async function main() {9  const browser = await playwright.chromium.launch();10  const context = await browser.newContext();11  const page = await context.newPage();12  const frame = page.mainFrame();13  const worker = await page.evaluateHandle(() => new Worker(URL.createObjectURL(new Blob(['console.log("hi from worker")'], { type: 'application/javascript' }))));14  const handle = await frame.evaluateHandle(() => document.body);15  const elementHandle = handle.asElement();16  const lanes = getEqualOrHigherPriorityLanes(page, frame, worker, handle, elementHandle);17  console.log(lanes);18  await browser.close();19}20main();

Using AI Code Generation

1const {getEqualOrHigherPriorityLanes} = require('playwright/lib/server/supplements/recorder/recorderSupplement');2const lanes = getEqualOrHigherPriorityLanes('mouse');3console.log(lanes);4module.exports = {5    use: {6    },7}8const {getLanes} = require('playwright/lib/server/supplements/recorder/recorderSupplement');9const lanes = getLanes();10console.log(lanes);11module.exports = {12    use: {13    },14}15const {getLane} = require('playwright/lib/server/supplements/recorder/recorderSupplement');16const lane = getLane();17console.log(lane);18module.exports = {19    use: {20    },21}22const {getLanePriority

Using AI Code Generation

1const { Playwright } = require('@playwright/test');2const playwright = new Playwright({3    {4      use: {5        viewport: { width: 1280, height: 720 },6      },7    },8});9(async () => {10  const browser = await playwright.chromium.launch();11  const context = await browser.newContext();12  const page = await context.newPage();13  const lanes = await playwright._getEqualOrHigherPriorityLanes();14  console.log(lanes);15  await browser.close();16})();17const { Playwright } = require('@playwright/test');18const playwright = new Playwright({19    {20      use: {21        viewport: { width: 1280, height: 720 },22      },23    },24});25(async () => {26  const browser = await playwright.chromium.launch();27  const context = await browser.newContext();28  const page = await context.newPage();29  const lanes = await playwright._getEqualOrHigherPriorityLanes();30  console.log(lanes);31  await browser.close();32})();

Using AI Code Generation

1const { getEqualOrHigherPriorityLanes } = require("@playwright/test/lib/utils");2const { test } = require("@playwright/test");3test("test", async ({ page }) => {4  const lanes = getEqualOrHigherPriorityLanes("stable");5  console.log(lanes);6});

Using AI Code Generation

1const { getEqualOrHigherPriorityLanes } = require('playwright/lib/traceModel/schedulingLanes.js');2const fs = require('fs');3const trace = fs.readFileSync('trace.json', 'utf8');4const model = new SchedulingModel(JSON.parse(trace));5const lanes = getEqualOrHigherPriorityLanes(model.mainThread, model.mainThread.currentLane);6console.log(lanes);7const { SchedulingModel } = require('./schedulingModel.js');8const { TaskNode } = require('./taskNode.js');9const { Lane } = require('./lane.js');10const { Thread } = require('./thread.js');11const { Events } = require('./events.js');12const { assert } = require('../utils/utils.js');13const { DevtoolsSession } = require('../protocol/devtoolsSession.js');14const { helper } = require('../helper.js');15const { Events: TracingEvents } = require('../events.js');16const { createGuid } = require('../utils/utils.js');17const { Task } = require('../utils/task.js');18const { TimeoutSettings } = require('../utils/timeoutSettings.js');19const { Progress } = require('../progress.js');20const { debugError } = require('../utils/debugLogger.js');21const { assertMaxArguments } = require('../utils/utils.js');22const { ProgressController } = require('../progress.js');23const { TimeoutError } = require('../errors.js');24const { ConnectionEvents } = require('../connection.js');25const { Events: BrowserContextEvents } = require('../browserContext.js');26const { Events: PageEvents } = require('../page.js');27const { Events: WorkerEvents } = require('../worker.js');28const { Events: BrowserEvents } = require('../browser.js');29const { Events: BrowserServerEvents } = require('../browserServer.js');30const { Events: DispatcherEvents } = require('../dispatchers

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.