/** @license React v0.18.0
 * scheduler-unstable_mock.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';

Liferay.Loader.define('frontend-js-components-web$scheduler@0.18.0/umd/scheduler-unstable_mock.development', ['module', 'exports', 'require'], function (module, exports, require) {
  var define = undefined;
  var global = window;
  {
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : typeof define === 'function' && define.amd ? define(['exports'], factory) : factory(global.SchedulerMock = {});
    })(this, function (exports) {
      'use strict';

      var enableProfiling = true;

      var currentTime = 0;
      var scheduledCallback = null;
      var scheduledTimeout = null;
      var timeoutTime = -1;
      var yieldedValues = null;
      var expectedNumberOfYields = -1;
      var didStop = false;
      var isFlushing = false;
      var needsPaint = false;
      var shouldYieldForPaint = false;
      function requestHostCallback(callback) {
        scheduledCallback = callback;
      }

      function requestHostTimeout(callback, ms) {
        scheduledTimeout = callback;
        timeoutTime = currentTime + ms;
      }
      function cancelHostTimeout() {
        scheduledTimeout = null;
        timeoutTime = -1;
      }
      function shouldYieldToHost() {
        if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
          // We yielded at least as many values as expected. Stop flushing.
          didStop = true;
          return true;
        }

        return false;
      }
      function getCurrentTime() {
        return currentTime;
      }

      // Should only be used via an assertion helper that inspects the yielded values.

      function unstable_flushNumberOfYields(count) {
        if (isFlushing) {
          throw new Error('Already flushing work.');
        }

        if (scheduledCallback !== null) {
          var cb = scheduledCallback;
          expectedNumberOfYields = count;
          isFlushing = true;

          try {
            var hasMoreWork = true;

            do {
              hasMoreWork = cb(true, currentTime);
            } while (hasMoreWork && !didStop);

            if (!hasMoreWork) {
              scheduledCallback = null;
            }
          } finally {
            expectedNumberOfYields = -1;
            didStop = false;
            isFlushing = false;
          }
        }
      }
      function unstable_flushUntilNextPaint() {
        if (isFlushing) {
          throw new Error('Already flushing work.');
        }

        if (scheduledCallback !== null) {
          var cb = scheduledCallback;
          shouldYieldForPaint = true;
          needsPaint = false;
          isFlushing = true;

          try {
            var hasMoreWork = true;

            do {
              hasMoreWork = cb(true, currentTime);
            } while (hasMoreWork && !didStop);

            if (!hasMoreWork) {
              scheduledCallback = null;
            }
          } finally {
            shouldYieldForPaint = false;
            didStop = false;
            isFlushing = false;
          }
        }
      }
      function unstable_flushExpired() {
        if (isFlushing) {
          throw new Error('Already flushing work.');
        }

        if (scheduledCallback !== null) {
          isFlushing = true;

          try {
            var hasMoreWork = scheduledCallback(false, currentTime);

            if (!hasMoreWork) {
              scheduledCallback = null;
            }
          } finally {
            isFlushing = false;
          }
        }
      }
      function unstable_flushAllWithoutAsserting() {
        // Returns false if no work was flushed.
        if (isFlushing) {
          throw new Error('Already flushing work.');
        }

        if (scheduledCallback !== null) {
          var cb = scheduledCallback;
          isFlushing = true;

          try {
            var hasMoreWork = true;

            do {
              hasMoreWork = cb(true, currentTime);
            } while (hasMoreWork);

            if (!hasMoreWork) {
              scheduledCallback = null;
            }

            return true;
          } finally {
            isFlushing = false;
          }
        } else {
          return false;
        }
      }
      function unstable_clearYields() {
        if (yieldedValues === null) {
          return [];
        }

        var values = yieldedValues;
        yieldedValues = null;
        return values;
      }
      function unstable_flushAll() {
        if (yieldedValues !== null) {
          throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
        }

        unstable_flushAllWithoutAsserting();

        if (yieldedValues !== null) {
          throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
        }
      }
      function unstable_yieldValue(value) {
        if (yieldedValues === null) {
          yieldedValues = [value];
        } else {
          yieldedValues.push(value);
        }
      }
      function unstable_advanceTime(ms) {
        currentTime += ms;

        if (!isFlushing) {
          if (scheduledTimeout !== null && timeoutTime <= currentTime) {
            scheduledTimeout(currentTime);
            timeoutTime = -1;
            scheduledTimeout = null;
          }

          unstable_flushExpired();
        }
      }


      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 = Math.floor((index - 1) / 2);
          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 = enableProfiling && 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


      // Equivalent to 2 megabytes

      var eventLogSize = 0;
      var eventLogBuffer = null;
      var eventLog = null;
      var eventLogIndex = 0;


      function logEvent(entries) {
        if (eventLog !== null) {
          var offset = eventLogIndex;
          eventLogIndex += entries.length;

          if (eventLogIndex + 1 > eventLogSize) {
            eventLogSize *= 2;

            if (eventLogSize > 524288) {
              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 = 131072;
        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([1, 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([2, ms * 1000, task.id]);
        }
      }
      function markTaskCanceled(task, ms) {
        profilingState[QUEUE_SIZE]--;

        if (eventLog !== null) {
          logEvent([4, ms * 1000, task.id]);
        }
      }
      function markTaskErrored(task, ms) {
        profilingState[PRIORITY] = NoPriority;
        profilingState[CURRENT_TASK_ID] = 0;
        profilingState[QUEUE_SIZE]--;

        if (eventLog !== null) {
          logEvent([3, 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([5, 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([6, ms * 1000, task.id, runIdCounter]);
        }
      }
      function markSchedulerSuspended(ms) {
        mainThreadIdCounter++;

        if (eventLog !== null) {
          logEvent([7, ms * 1000, mainThreadIdCounter]);
        }
      }
      function markSchedulerUnsuspended(ms) {
        if (eventLog !== null) {
          logEvent([8, ms * 1000, mainThreadIdCounter]);
        }
      }

      /* eslint-disable no-var */
      // Math.pow(2, 30) - 1
      // 0b111111111111111111111111111111

      // Times out immediately

      // Eventually times out

      // Never times out

      // 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 isSchedulerPaused = false;
      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 {
          try {
            return workLoop(hasTimeRemaining, initialTime);
          } catch (error) {
            if (currentTask !== null) {
              var currentTime = getCurrentTime();
              markTaskErrored(currentTask, currentTime);
              currentTask.isQueued = false;
            }

            throw error;
          }
        } finally {
          currentTask = null;
          currentPriorityLevel = previousPriorityLevel;
          isPerformingWork = false;

          var _currentTime = getCurrentTime();

          markSchedulerSuspended(_currentTime);
        }
      }

      function workLoop(hasTimeRemaining, initialTime) {
        var currentTime = initialTime;
        advanceTimers(currentTime);
        currentTask = peek(taskQueue);

        while (currentTask !== null && !(false && isSchedulerPaused)) {
          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 = getCurrentTime();

            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 -1;

          case UserBlockingPriority:
            return 250;

          case IdlePriority:
            return 1073741823;

          case LowPriority:
            return 10000;

          case NormalPriority:
          default:
            return 5000;
        }
      }

      function unstable_scheduleCallback(priorityLevel, callback, options) {
        var currentTime = getCurrentTime();
        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_continueExecution() {
        isSchedulerPaused = false;

        if (!isHostCallbackScheduled && !isPerformingWork) {
          isHostCallbackScheduled = true;
          requestHostCallback(flushWork);
        }
      }

      function unstable_cancelCallback(task) {
        if (task.isQueued) {
          var currentTime = getCurrentTime();
          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 = getCurrentTime();
        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_Profiling = {
        startLoggingProfilingEvents: startLoggingProfilingEvents,
        stopLoggingProfilingEvents: stopLoggingProfilingEvents,
        sharedProfilingBuffer: sharedProfilingBuffer
      };

      exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
      exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
      exports.unstable_flushExpired = unstable_flushExpired;
      exports.unstable_clearYields = unstable_clearYields;
      exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
      exports.unstable_flushAll = unstable_flushAll;
      exports.unstable_yieldValue = unstable_yieldValue;
      exports.unstable_advanceTime = unstable_advanceTime;
      exports.unstable_ImmediatePriority = ImmediatePriority;
      exports.unstable_UserBlockingPriority = UserBlockingPriority;
      exports.unstable_NormalPriority = NormalPriority;
      exports.unstable_IdlePriority = IdlePriority;
      exports.unstable_LowPriority = LowPriority;
      exports.unstable_runWithPriority = unstable_runWithPriority;
      exports.unstable_next = unstable_next;
      exports.unstable_scheduleCallback = unstable_scheduleCallback;
      exports.unstable_cancelCallback = unstable_cancelCallback;
      exports.unstable_wrapCallback = unstable_wrapCallback;
      exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
      exports.unstable_shouldYield = unstable_shouldYield;
      exports.unstable_requestPaint = function requestPaint() {
        needsPaint = true;
      };
      exports.unstable_continueExecution = unstable_continueExecution;
      exports.unstable_pauseExecution = function unstable_pauseExecution() {
        isSchedulerPaused = true;
      };
      exports.unstable_getFirstCallbackNode = function unstable_getFirstCallbackNode() {
        return peek(taskQueue);
      };
      exports.unstable_now = getCurrentTime;
      exports.unstable_forceFrameRate = function forceFrameRate() {} // No-op
      ;
      exports.unstable_Profiling = unstable_Profiling;

      Object.defineProperty(exports, '__esModule', { value: true });
    });
  }
});
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