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Diffstat (limited to 'node_modules/scheduler/cjs/scheduler.development.js')
-rw-r--r-- | node_modules/scheduler/cjs/scheduler.development.js | 858 |
1 files changed, 0 insertions, 858 deletions
diff --git a/node_modules/scheduler/cjs/scheduler.development.js b/node_modules/scheduler/cjs/scheduler.development.js deleted file mode 100644 index bfc99a2..0000000 --- a/node_modules/scheduler/cjs/scheduler.development.js +++ /dev/null @@ -1,858 +0,0 @@ -/** @license React v0.19.1 - * scheduler.development.js - * - * Copyright (c) Facebook, Inc. and its affiliates. - * - * This source code is licensed under the MIT license found in the - * LICENSE file in the root directory of this source tree. - */ - -'use strict'; - - - -if (process.env.NODE_ENV !== "production") { - (function() { -'use strict'; - -var enableSchedulerDebugging = false; -var enableProfiling = true; - -var requestHostCallback; -var requestHostTimeout; -var cancelHostTimeout; -var shouldYieldToHost; -var requestPaint; - -if ( // If Scheduler runs in a non-DOM environment, it falls back to a naive -// implementation using setTimeout. -typeof window === 'undefined' || // Check if MessageChannel is supported, too. -typeof MessageChannel !== 'function') { - // If this accidentally gets imported in a non-browser environment, e.g. JavaScriptCore, - // fallback to a naive implementation. - var _callback = null; - var _timeoutID = null; - - var _flushCallback = function () { - if (_callback !== null) { - try { - var currentTime = exports.unstable_now(); - var hasRemainingTime = true; - - _callback(hasRemainingTime, currentTime); - - _callback = null; - } catch (e) { - setTimeout(_flushCallback, 0); - throw e; - } - } - }; - - var initialTime = Date.now(); - - exports.unstable_now = function () { - return Date.now() - initialTime; - }; - - requestHostCallback = function (cb) { - if (_callback !== null) { - // Protect against re-entrancy. - setTimeout(requestHostCallback, 0, cb); - } else { - _callback = cb; - setTimeout(_flushCallback, 0); - } - }; - - requestHostTimeout = function (cb, ms) { - _timeoutID = setTimeout(cb, ms); - }; - - cancelHostTimeout = function () { - clearTimeout(_timeoutID); - }; - - shouldYieldToHost = function () { - return false; - }; - - requestPaint = exports.unstable_forceFrameRate = function () {}; -} else { - // Capture local references to native APIs, in case a polyfill overrides them. - var performance = window.performance; - var _Date = window.Date; - var _setTimeout = window.setTimeout; - var _clearTimeout = window.clearTimeout; - - if (typeof console !== 'undefined') { - // TODO: Scheduler no longer requires these methods to be polyfilled. But - // maybe we want to continue warning if they don't exist, to preserve the - // option to rely on it in the future? - var requestAnimationFrame = window.requestAnimationFrame; - var cancelAnimationFrame = window.cancelAnimationFrame; // TODO: Remove fb.me link - - if (typeof requestAnimationFrame !== 'function') { - // Using console['error'] to evade Babel and ESLint - console['error']("This browser doesn't support requestAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills'); - } - - if (typeof cancelAnimationFrame !== 'function') { - // Using console['error'] to evade Babel and ESLint - console['error']("This browser doesn't support cancelAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills'); - } - } - - if (typeof performance === 'object' && typeof performance.now === 'function') { - exports.unstable_now = function () { - return performance.now(); - }; - } else { - var _initialTime = _Date.now(); - - exports.unstable_now = function () { - return _Date.now() - _initialTime; - }; - } - - var isMessageLoopRunning = false; - var scheduledHostCallback = null; - var taskTimeoutID = -1; // Scheduler periodically yields in case there is other work on the main - // thread, like user events. By default, it yields multiple times per frame. - // It does not attempt to align with frame boundaries, since most tasks don't - // need to be frame aligned; for those that do, use requestAnimationFrame. - - var yieldInterval = 5; - var deadline = 0; // TODO: Make this configurable - - { - // `isInputPending` is not available. Since we have no way of knowing if - // there's pending input, always yield at the end of the frame. - shouldYieldToHost = function () { - return exports.unstable_now() >= deadline; - }; // Since we yield every frame regardless, `requestPaint` has no effect. - - - requestPaint = function () {}; - } - - exports.unstable_forceFrameRate = function (fps) { - if (fps < 0 || fps > 125) { - // Using console['error'] to evade Babel and ESLint - console['error']('forceFrameRate takes a positive int between 0 and 125, ' + 'forcing framerates higher than 125 fps is not unsupported'); - return; - } - - if (fps > 0) { - yieldInterval = Math.floor(1000 / fps); - } else { - // reset the framerate - yieldInterval = 5; - } - }; - - var performWorkUntilDeadline = function () { - if (scheduledHostCallback !== null) { - var currentTime = exports.unstable_now(); // Yield after `yieldInterval` ms, regardless of where we are in the vsync - // cycle. This means there's always time remaining at the beginning of - // the message event. - - deadline = currentTime + yieldInterval; - var hasTimeRemaining = true; - - try { - var hasMoreWork = scheduledHostCallback(hasTimeRemaining, currentTime); - - if (!hasMoreWork) { - isMessageLoopRunning = false; - scheduledHostCallback = null; - } else { - // If there's more work, schedule the next message event at the end - // of the preceding one. - port.postMessage(null); - } - } catch (error) { - // If a scheduler task throws, exit the current browser task so the - // error can be observed. - port.postMessage(null); - throw error; - } - } else { - isMessageLoopRunning = false; - } // Yielding to the browser will give it a chance to paint, so we can - }; - - var channel = new MessageChannel(); - var port = channel.port2; - channel.port1.onmessage = performWorkUntilDeadline; - - requestHostCallback = function (callback) { - scheduledHostCallback = callback; - - if (!isMessageLoopRunning) { - isMessageLoopRunning = true; - port.postMessage(null); - } - }; - - requestHostTimeout = function (callback, ms) { - taskTimeoutID = _setTimeout(function () { - callback(exports.unstable_now()); - }, ms); - }; - - cancelHostTimeout = function () { - _clearTimeout(taskTimeoutID); - - taskTimeoutID = -1; - }; -} - -function push(heap, node) { - var index = heap.length; - heap.push(node); - siftUp(heap, node, index); -} -function peek(heap) { - var first = heap[0]; - return first === undefined ? null : first; -} -function pop(heap) { - var first = heap[0]; - - if (first !== undefined) { - var last = heap.pop(); - - if (last !== first) { - heap[0] = last; - siftDown(heap, last, 0); - } - - return first; - } else { - return null; - } -} - -function siftUp(heap, node, i) { - var index = i; - - while (true) { - var parentIndex = index - 1 >>> 1; - var parent = heap[parentIndex]; - - if (parent !== undefined && compare(parent, node) > 0) { - // The parent is larger. Swap positions. - heap[parentIndex] = node; - heap[index] = parent; - index = parentIndex; - } else { - // The parent is smaller. Exit. - return; - } - } -} - -function siftDown(heap, node, i) { - var index = i; - var length = heap.length; - - while (index < length) { - var leftIndex = (index + 1) * 2 - 1; - var left = heap[leftIndex]; - var rightIndex = leftIndex + 1; - var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those. - - if (left !== undefined && compare(left, node) < 0) { - if (right !== undefined && compare(right, left) < 0) { - heap[index] = right; - heap[rightIndex] = node; - index = rightIndex; - } else { - heap[index] = left; - heap[leftIndex] = node; - index = leftIndex; - } - } else if (right !== undefined && compare(right, node) < 0) { - heap[index] = right; - heap[rightIndex] = node; - index = rightIndex; - } else { - // Neither child is smaller. Exit. - return; - } - } -} - -function compare(a, b) { - // Compare sort index first, then task id. - var diff = a.sortIndex - b.sortIndex; - return diff !== 0 ? diff : a.id - b.id; -} - -// TODO: Use symbols? -var NoPriority = 0; -var ImmediatePriority = 1; -var UserBlockingPriority = 2; -var NormalPriority = 3; -var LowPriority = 4; -var IdlePriority = 5; - -var runIdCounter = 0; -var mainThreadIdCounter = 0; -var profilingStateSize = 4; -var sharedProfilingBuffer = // $FlowFixMe Flow doesn't know about SharedArrayBuffer -typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : // $FlowFixMe Flow doesn't know about ArrayBuffer -typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null // Don't crash the init path on IE9 -; -var profilingState = sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : []; // We can't read this but it helps save bytes for null checks - -var PRIORITY = 0; -var CURRENT_TASK_ID = 1; -var CURRENT_RUN_ID = 2; -var QUEUE_SIZE = 3; - -{ - profilingState[PRIORITY] = NoPriority; // This is maintained with a counter, because the size of the priority queue - // array might include canceled tasks. - - profilingState[QUEUE_SIZE] = 0; - profilingState[CURRENT_TASK_ID] = 0; -} // Bytes per element is 4 - - -var INITIAL_EVENT_LOG_SIZE = 131072; -var MAX_EVENT_LOG_SIZE = 524288; // Equivalent to 2 megabytes - -var eventLogSize = 0; -var eventLogBuffer = null; -var eventLog = null; -var eventLogIndex = 0; -var TaskStartEvent = 1; -var TaskCompleteEvent = 2; -var TaskErrorEvent = 3; -var TaskCancelEvent = 4; -var TaskRunEvent = 5; -var TaskYieldEvent = 6; -var SchedulerSuspendEvent = 7; -var SchedulerResumeEvent = 8; - -function logEvent(entries) { - if (eventLog !== null) { - var offset = eventLogIndex; - eventLogIndex += entries.length; - - if (eventLogIndex + 1 > eventLogSize) { - eventLogSize *= 2; - - if (eventLogSize > MAX_EVENT_LOG_SIZE) { - // Using console['error'] to evade Babel and ESLint - console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.'); - stopLoggingProfilingEvents(); - return; - } - - var newEventLog = new Int32Array(eventLogSize * 4); - newEventLog.set(eventLog); - eventLogBuffer = newEventLog.buffer; - eventLog = newEventLog; - } - - eventLog.set(entries, offset); - } -} - -function startLoggingProfilingEvents() { - eventLogSize = INITIAL_EVENT_LOG_SIZE; - eventLogBuffer = new ArrayBuffer(eventLogSize * 4); - eventLog = new Int32Array(eventLogBuffer); - eventLogIndex = 0; -} -function stopLoggingProfilingEvents() { - var buffer = eventLogBuffer; - eventLogSize = 0; - eventLogBuffer = null; - eventLog = null; - eventLogIndex = 0; - return buffer; -} -function markTaskStart(task, ms) { - { - profilingState[QUEUE_SIZE]++; - - if (eventLog !== null) { - // performance.now returns a float, representing milliseconds. When the - // event is logged, it's coerced to an int. Convert to microseconds to - // maintain extra degrees of precision. - logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]); - } - } -} -function markTaskCompleted(task, ms) { - { - profilingState[PRIORITY] = NoPriority; - profilingState[CURRENT_TASK_ID] = 0; - profilingState[QUEUE_SIZE]--; - - if (eventLog !== null) { - logEvent([TaskCompleteEvent, ms * 1000, task.id]); - } - } -} -function markTaskCanceled(task, ms) { - { - profilingState[QUEUE_SIZE]--; - - if (eventLog !== null) { - logEvent([TaskCancelEvent, ms * 1000, task.id]); - } - } -} -function markTaskErrored(task, ms) { - { - profilingState[PRIORITY] = NoPriority; - profilingState[CURRENT_TASK_ID] = 0; - profilingState[QUEUE_SIZE]--; - - if (eventLog !== null) { - logEvent([TaskErrorEvent, ms * 1000, task.id]); - } - } -} -function markTaskRun(task, ms) { - { - runIdCounter++; - profilingState[PRIORITY] = task.priorityLevel; - profilingState[CURRENT_TASK_ID] = task.id; - profilingState[CURRENT_RUN_ID] = runIdCounter; - - if (eventLog !== null) { - logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]); - } - } -} -function markTaskYield(task, ms) { - { - profilingState[PRIORITY] = NoPriority; - profilingState[CURRENT_TASK_ID] = 0; - profilingState[CURRENT_RUN_ID] = 0; - - if (eventLog !== null) { - logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]); - } - } -} -function markSchedulerSuspended(ms) { - { - mainThreadIdCounter++; - - if (eventLog !== null) { - logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]); - } - } -} -function markSchedulerUnsuspended(ms) { - { - if (eventLog !== null) { - logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]); - } - } -} - -/* eslint-disable no-var */ -// Math.pow(2, 30) - 1 -// 0b111111111111111111111111111111 - -var maxSigned31BitInt = 1073741823; // Times out immediately - -var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out - -var USER_BLOCKING_PRIORITY = 250; -var NORMAL_PRIORITY_TIMEOUT = 5000; -var LOW_PRIORITY_TIMEOUT = 10000; // Never times out - -var IDLE_PRIORITY = maxSigned31BitInt; // Tasks are stored on a min heap - -var taskQueue = []; -var timerQueue = []; // Incrementing id counter. Used to maintain insertion order. - -var taskIdCounter = 1; // Pausing the scheduler is useful for debugging. -var currentTask = null; -var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy. - -var isPerformingWork = false; -var isHostCallbackScheduled = false; -var isHostTimeoutScheduled = false; - -function advanceTimers(currentTime) { - // Check for tasks that are no longer delayed and add them to the queue. - var timer = peek(timerQueue); - - while (timer !== null) { - if (timer.callback === null) { - // Timer was cancelled. - pop(timerQueue); - } else if (timer.startTime <= currentTime) { - // Timer fired. Transfer to the task queue. - pop(timerQueue); - timer.sortIndex = timer.expirationTime; - push(taskQueue, timer); - - { - markTaskStart(timer, currentTime); - timer.isQueued = true; - } - } else { - // Remaining timers are pending. - return; - } - - timer = peek(timerQueue); - } -} - -function handleTimeout(currentTime) { - isHostTimeoutScheduled = false; - advanceTimers(currentTime); - - if (!isHostCallbackScheduled) { - if (peek(taskQueue) !== null) { - isHostCallbackScheduled = true; - requestHostCallback(flushWork); - } else { - var firstTimer = peek(timerQueue); - - if (firstTimer !== null) { - requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime); - } - } - } -} - -function flushWork(hasTimeRemaining, initialTime) { - { - markSchedulerUnsuspended(initialTime); - } // We'll need a host callback the next time work is scheduled. - - - isHostCallbackScheduled = false; - - if (isHostTimeoutScheduled) { - // We scheduled a timeout but it's no longer needed. Cancel it. - isHostTimeoutScheduled = false; - cancelHostTimeout(); - } - - isPerformingWork = true; - var previousPriorityLevel = currentPriorityLevel; - - try { - if (enableProfiling) { - try { - return workLoop(hasTimeRemaining, initialTime); - } catch (error) { - if (currentTask !== null) { - var currentTime = exports.unstable_now(); - markTaskErrored(currentTask, currentTime); - currentTask.isQueued = false; - } - - throw error; - } - } else { - // No catch in prod codepath. - return workLoop(hasTimeRemaining, initialTime); - } - } finally { - currentTask = null; - currentPriorityLevel = previousPriorityLevel; - isPerformingWork = false; - - { - var _currentTime = exports.unstable_now(); - - markSchedulerSuspended(_currentTime); - } - } -} - -function workLoop(hasTimeRemaining, initialTime) { - var currentTime = initialTime; - advanceTimers(currentTime); - currentTask = peek(taskQueue); - - while (currentTask !== null && !(enableSchedulerDebugging )) { - if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) { - // This currentTask hasn't expired, and we've reached the deadline. - break; - } - - var callback = currentTask.callback; - - if (callback !== null) { - currentTask.callback = null; - currentPriorityLevel = currentTask.priorityLevel; - var didUserCallbackTimeout = currentTask.expirationTime <= currentTime; - markTaskRun(currentTask, currentTime); - var continuationCallback = callback(didUserCallbackTimeout); - currentTime = exports.unstable_now(); - - if (typeof continuationCallback === 'function') { - currentTask.callback = continuationCallback; - markTaskYield(currentTask, currentTime); - } else { - { - markTaskCompleted(currentTask, currentTime); - currentTask.isQueued = false; - } - - if (currentTask === peek(taskQueue)) { - pop(taskQueue); - } - } - - advanceTimers(currentTime); - } else { - pop(taskQueue); - } - - currentTask = peek(taskQueue); - } // Return whether there's additional work - - - if (currentTask !== null) { - return true; - } else { - var firstTimer = peek(timerQueue); - - if (firstTimer !== null) { - requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime); - } - - return false; - } -} - -function unstable_runWithPriority(priorityLevel, eventHandler) { - switch (priorityLevel) { - case ImmediatePriority: - case UserBlockingPriority: - case NormalPriority: - case LowPriority: - case IdlePriority: - break; - - default: - priorityLevel = NormalPriority; - } - - var previousPriorityLevel = currentPriorityLevel; - currentPriorityLevel = priorityLevel; - - try { - return eventHandler(); - } finally { - currentPriorityLevel = previousPriorityLevel; - } -} - -function unstable_next(eventHandler) { - var priorityLevel; - - switch (currentPriorityLevel) { - case ImmediatePriority: - case UserBlockingPriority: - case NormalPriority: - // Shift down to normal priority - priorityLevel = NormalPriority; - break; - - default: - // Anything lower than normal priority should remain at the current level. - priorityLevel = currentPriorityLevel; - break; - } - - var previousPriorityLevel = currentPriorityLevel; - currentPriorityLevel = priorityLevel; - - try { - return eventHandler(); - } finally { - currentPriorityLevel = previousPriorityLevel; - } -} - -function unstable_wrapCallback(callback) { - var parentPriorityLevel = currentPriorityLevel; - return function () { - // This is a fork of runWithPriority, inlined for performance. - var previousPriorityLevel = currentPriorityLevel; - currentPriorityLevel = parentPriorityLevel; - - try { - return callback.apply(this, arguments); - } finally { - currentPriorityLevel = previousPriorityLevel; - } - }; -} - -function timeoutForPriorityLevel(priorityLevel) { - switch (priorityLevel) { - case ImmediatePriority: - return IMMEDIATE_PRIORITY_TIMEOUT; - - case UserBlockingPriority: - return USER_BLOCKING_PRIORITY; - - case IdlePriority: - return IDLE_PRIORITY; - - case LowPriority: - return LOW_PRIORITY_TIMEOUT; - - case NormalPriority: - default: - return NORMAL_PRIORITY_TIMEOUT; - } -} - -function unstable_scheduleCallback(priorityLevel, callback, options) { - var currentTime = exports.unstable_now(); - var startTime; - var timeout; - - if (typeof options === 'object' && options !== null) { - var delay = options.delay; - - if (typeof delay === 'number' && delay > 0) { - startTime = currentTime + delay; - } else { - startTime = currentTime; - } - - timeout = typeof options.timeout === 'number' ? options.timeout : timeoutForPriorityLevel(priorityLevel); - } else { - timeout = timeoutForPriorityLevel(priorityLevel); - startTime = currentTime; - } - - var expirationTime = startTime + timeout; - var newTask = { - id: taskIdCounter++, - callback: callback, - priorityLevel: priorityLevel, - startTime: startTime, - expirationTime: expirationTime, - sortIndex: -1 - }; - - { - newTask.isQueued = false; - } - - if (startTime > currentTime) { - // This is a delayed task. - newTask.sortIndex = startTime; - push(timerQueue, newTask); - - if (peek(taskQueue) === null && newTask === peek(timerQueue)) { - // All tasks are delayed, and this is the task with the earliest delay. - if (isHostTimeoutScheduled) { - // Cancel an existing timeout. - cancelHostTimeout(); - } else { - isHostTimeoutScheduled = true; - } // Schedule a timeout. - - - requestHostTimeout(handleTimeout, startTime - currentTime); - } - } else { - newTask.sortIndex = expirationTime; - push(taskQueue, newTask); - - { - markTaskStart(newTask, currentTime); - newTask.isQueued = true; - } // Schedule a host callback, if needed. If we're already performing work, - // wait until the next time we yield. - - - if (!isHostCallbackScheduled && !isPerformingWork) { - isHostCallbackScheduled = true; - requestHostCallback(flushWork); - } - } - - return newTask; -} - -function unstable_pauseExecution() { -} - -function unstable_continueExecution() { - - if (!isHostCallbackScheduled && !isPerformingWork) { - isHostCallbackScheduled = true; - requestHostCallback(flushWork); - } -} - -function unstable_getFirstCallbackNode() { - return peek(taskQueue); -} - -function unstable_cancelCallback(task) { - { - if (task.isQueued) { - var currentTime = exports.unstable_now(); - markTaskCanceled(task, currentTime); - task.isQueued = false; - } - } // Null out the callback to indicate the task has been canceled. (Can't - // remove from the queue because you can't remove arbitrary nodes from an - // array based heap, only the first one.) - - - task.callback = null; -} - -function unstable_getCurrentPriorityLevel() { - return currentPriorityLevel; -} - -function unstable_shouldYield() { - var currentTime = exports.unstable_now(); - advanceTimers(currentTime); - var firstTask = peek(taskQueue); - return firstTask !== currentTask && currentTask !== null && firstTask !== null && firstTask.callback !== null && firstTask.startTime <= currentTime && firstTask.expirationTime < currentTask.expirationTime || shouldYieldToHost(); -} - -var unstable_requestPaint = requestPaint; -var unstable_Profiling = { - startLoggingProfilingEvents: startLoggingProfilingEvents, - stopLoggingProfilingEvents: stopLoggingProfilingEvents, - sharedProfilingBuffer: sharedProfilingBuffer -} ; - -exports.unstable_IdlePriority = IdlePriority; -exports.unstable_ImmediatePriority = ImmediatePriority; -exports.unstable_LowPriority = LowPriority; -exports.unstable_NormalPriority = NormalPriority; -exports.unstable_Profiling = unstable_Profiling; -exports.unstable_UserBlockingPriority = UserBlockingPriority; -exports.unstable_cancelCallback = unstable_cancelCallback; -exports.unstable_continueExecution = unstable_continueExecution; -exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel; -exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode; -exports.unstable_next = unstable_next; -exports.unstable_pauseExecution = unstable_pauseExecution; -exports.unstable_requestPaint = unstable_requestPaint; -exports.unstable_runWithPriority = unstable_runWithPriority; -exports.unstable_scheduleCallback = unstable_scheduleCallback; -exports.unstable_shouldYield = unstable_shouldYield; -exports.unstable_wrapCallback = unstable_wrapCallback; - })(); -} |