Initial commit

node_modules/schedule/cjs/schedule-tracing.development.js

@@ -0,0 +1,427 @@
+/** @license React v16.5.2
+ * schedule-tracing.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';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+// Exports ReactDOM.createRoot
+
+
+// Experimental error-boundary API that can recover from errors within a single
+// render phase
+
+// Suspense
+
+// Helps identify side effects in begin-phase lifecycle hooks and setState reducers:
+
+
+// In some cases, StrictMode should also double-render lifecycles.
+// This can be confusing for tests though,
+// And it can be bad for performance in production.
+// This feature flag can be used to control the behavior:
+
+
+// To preserve the "Pause on caught exceptions" behavior of the debugger, we
+// replay the begin phase of a failed component inside invokeGuardedCallback.
+
+
+// Warn about deprecated, async-unsafe lifecycles; relates to RFC #6:
+
+
+// Warn about legacy context API
+
+
+// Gather advanced timing metrics for Profiler subtrees.
+
+
+// Trace which interactions trigger each commit.
+var enableSchedulerTracing = true;
+
+// Only used in www builds.
+
+
+// Only used in www builds.
+
+
+// React Fire: prevent the value and checked attributes from syncing
+// with their related DOM properties
+
+var DEFAULT_THREAD_ID = 0;
+
+// Counters used to generate unique IDs.
+var interactionIDCounter = 0;
+var threadIDCounter = 0;
+
+// Set of currently traced interactions.
+// Interactions "stack"–
+// Meaning that newly traced interactions are appended to the previously active set.
+// When an interaction goes out of scope, the previous set (if any) is restored.
+exports.__interactionsRef = null;
+
+// Listener(s) to notify when interactions begin and end.
+exports.__subscriberRef = null;
+
+if (enableSchedulerTracing) {
+  exports.__interactionsRef = {
+    current: new Set()
+  };
+  exports.__subscriberRef = {
+    current: null
+  };
+}
+
+function unstable_clear(callback) {
+  if (!enableSchedulerTracing) {
+    return callback();
+  }
+
+  var prevInteractions = exports.__interactionsRef.current;
+  exports.__interactionsRef.current = new Set();
+
+  try {
+    return callback();
+  } finally {
+    exports.__interactionsRef.current = prevInteractions;
+  }
+}
+
+function unstable_getCurrent() {
+  if (!enableSchedulerTracing) {
+    return null;
+  } else {
+    return exports.__interactionsRef.current;
+  }
+}
+
+function unstable_getThreadID() {
+  return ++threadIDCounter;
+}
+
+function unstable_trace(name, timestamp, callback) {
+  var threadID = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_THREAD_ID;
+
+  if (!enableSchedulerTracing) {
+    return callback();
+  }
+
+  var interaction = {
+    __count: 1,
+    id: interactionIDCounter++,
+    name: name,
+    timestamp: timestamp
+  };
+
+  var prevInteractions = exports.__interactionsRef.current;
+
+  // Traced interactions should stack/accumulate.
+  // To do that, clone the current interactions.
+  // The previous set will be restored upon completion.
+  var interactions = new Set(prevInteractions);
+  interactions.add(interaction);
+  exports.__interactionsRef.current = interactions;
+
+  var subscriber = exports.__subscriberRef.current;
+  var returnValue = void 0;
+
+  try {
+    if (subscriber !== null) {
+      subscriber.onInteractionTraced(interaction);
+    }
+  } finally {
+    try {
+      if (subscriber !== null) {
+        subscriber.onWorkStarted(interactions, threadID);
+      }
+    } finally {
+      try {
+        returnValue = callback();
+      } finally {
+        exports.__interactionsRef.current = prevInteractions;
+
+        try {
+          if (subscriber !== null) {
+            subscriber.onWorkStopped(interactions, threadID);
+          }
+        } finally {
+          interaction.__count--;
+
+          // If no async work was scheduled for this interaction,
+          // Notify subscribers that it's completed.
+          if (subscriber !== null && interaction.__count === 0) {
+            subscriber.onInteractionScheduledWorkCompleted(interaction);
+          }
+        }
+      }
+    }
+  }
+
+  return returnValue;
+}
+
+function unstable_wrap(callback) {
+  var threadID = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_THREAD_ID;
+
+  if (!enableSchedulerTracing) {
+    return callback;
+  }
+
+  var wrappedInteractions = exports.__interactionsRef.current;
+
+  var subscriber = exports.__subscriberRef.current;
+  if (subscriber !== null) {
+    subscriber.onWorkScheduled(wrappedInteractions, threadID);
+  }
+
+  // Update the pending async work count for the current interactions.
+  // Update after calling subscribers in case of error.
+  wrappedInteractions.forEach(function (interaction) {
+    interaction.__count++;
+  });
+
+  var hasRun = false;
+
+  function wrapped() {
+    var prevInteractions = exports.__interactionsRef.current;
+    exports.__interactionsRef.current = wrappedInteractions;
+
+    subscriber = exports.__subscriberRef.current;
+
+    try {
+      var returnValue = void 0;
+
+      try {
+        if (subscriber !== null) {
+          subscriber.onWorkStarted(wrappedInteractions, threadID);
+        }
+      } finally {
+        try {
+          returnValue = callback.apply(undefined, arguments);
+        } finally {
+          exports.__interactionsRef.current = prevInteractions;
+
+          if (subscriber !== null) {
+            subscriber.onWorkStopped(wrappedInteractions, threadID);
+          }
+        }
+      }
+
+      return returnValue;
+    } finally {
+      if (!hasRun) {
+        // We only expect a wrapped function to be executed once,
+        // But in the event that it's executed more than once–
+        // Only decrement the outstanding interaction counts once.
+        hasRun = true;
+
+        // Update pending async counts for all wrapped interactions.
+        // If this was the last scheduled async work for any of them,
+        // Mark them as completed.
+        wrappedInteractions.forEach(function (interaction) {
+          interaction.__count--;
+
+          if (subscriber !== null && interaction.__count === 0) {
+            subscriber.onInteractionScheduledWorkCompleted(interaction);
+          }
+        });
+      }
+    }
+  }
+
+  wrapped.cancel = function cancel() {
+    subscriber = exports.__subscriberRef.current;
+
+    try {
+      if (subscriber !== null) {
+        subscriber.onWorkCanceled(wrappedInteractions, threadID);
+      }
+    } finally {
+      // Update pending async counts for all wrapped interactions.
+      // If this was the last scheduled async work for any of them,
+      // Mark them as completed.
+      wrappedInteractions.forEach(function (interaction) {
+        interaction.__count--;
+
+        if (subscriber && interaction.__count === 0) {
+          subscriber.onInteractionScheduledWorkCompleted(interaction);
+        }
+      });
+    }
+  };
+
+  return wrapped;
+}
+
+var subscribers = null;
+if (enableSchedulerTracing) {
+  subscribers = new Set();
+}
+
+function unstable_subscribe(subscriber) {
+  if (enableSchedulerTracing) {
+    subscribers.add(subscriber);
+
+    if (subscribers.size === 1) {
+      exports.__subscriberRef.current = {
+        onInteractionScheduledWorkCompleted: onInteractionScheduledWorkCompleted,
+        onInteractionTraced: onInteractionTraced,
+        onWorkCanceled: onWorkCanceled,
+        onWorkScheduled: onWorkScheduled,
+        onWorkStarted: onWorkStarted,
+        onWorkStopped: onWorkStopped
+      };
+    }
+  }
+}
+
+function unstable_unsubscribe(subscriber) {
+  if (enableSchedulerTracing) {
+    subscribers.delete(subscriber);
+
+    if (subscribers.size === 0) {
+      exports.__subscriberRef.current = null;
+    }
+  }
+}
+
+function onInteractionTraced(interaction) {
+  var didCatchError = false;
+  var caughtError = null;
+
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onInteractionTraced(interaction);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onInteractionScheduledWorkCompleted(interaction) {
+  var didCatchError = false;
+  var caughtError = null;
+
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onInteractionScheduledWorkCompleted(interaction);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkScheduled(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkScheduled(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkStarted(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkStarted(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkStopped(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkStopped(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkCanceled(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkCanceled(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+exports.unstable_clear = unstable_clear;
+exports.unstable_getCurrent = unstable_getCurrent;
+exports.unstable_getThreadID = unstable_getThreadID;
+exports.unstable_trace = unstable_trace;
+exports.unstable_wrap = unstable_wrap;
+exports.unstable_subscribe = unstable_subscribe;
+exports.unstable_unsubscribe = unstable_unsubscribe;
+  })();
+}

node_modules/schedule/cjs/schedule-tracing.production.min.js

@@ -0,0 +1,10 @@
+/** @license React v16.5.2
+ * schedule-tracing.production.min.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';Object.defineProperty(exports,"__esModule",{value:!0});var b=0;exports.__interactionsRef=null;exports.__subscriberRef=null;exports.unstable_clear=function(a){return a()};exports.unstable_getCurrent=function(){return null};exports.unstable_getThreadID=function(){return++b};exports.unstable_trace=function(a,d,c){return c()};exports.unstable_wrap=function(a){return a};exports.unstable_subscribe=function(){};exports.unstable_unsubscribe=function(){};

node_modules/schedule/cjs/schedule-tracing.profiling.min.js

@@ -0,0 +1,17 @@
+/** @license React v16.5.2
+ * schedule-tracing.profiling.min.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';Object.defineProperty(exports,"__esModule",{value:!0});var g=0,m=0;exports.__interactionsRef=null;exports.__subscriberRef=null;exports.__interactionsRef={current:new Set};exports.__subscriberRef={current:null};var n=null;n=new Set;function p(e){var d=!1,a=null;n.forEach(function(c){try{c.onInteractionTraced(e)}catch(b){d||(d=!0,a=b)}});if(d)throw a;}
+function q(e){var d=!1,a=null;n.forEach(function(c){try{c.onInteractionScheduledWorkCompleted(e)}catch(b){d||(d=!0,a=b)}});if(d)throw a;}function r(e,d){var a=!1,c=null;n.forEach(function(b){try{b.onWorkScheduled(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function t(e,d){var a=!1,c=null;n.forEach(function(b){try{b.onWorkStarted(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function u(e,d){var a=!1,c=null;n.forEach(function(b){try{b.onWorkStopped(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}
+function v(e,d){var a=!1,c=null;n.forEach(function(b){try{b.onWorkCanceled(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}exports.unstable_clear=function(e){var d=exports.__interactionsRef.current;exports.__interactionsRef.current=new Set;try{return e()}finally{exports.__interactionsRef.current=d}};exports.unstable_getCurrent=function(){return exports.__interactionsRef.current};exports.unstable_getThreadID=function(){return++m};
+exports.unstable_trace=function(e,d,a){var c=3<arguments.length&&void 0!==arguments[3]?arguments[3]:0,b={__count:1,id:g++,name:e,timestamp:d},f=exports.__interactionsRef.current,k=new Set(f);k.add(b);exports.__interactionsRef.current=k;var h=exports.__subscriberRef.current,l=void 0;try{if(null!==h)h.onInteractionTraced(b)}finally{try{if(null!==h)h.onWorkStarted(k,c)}finally{try{l=a()}finally{exports.__interactionsRef.current=f;try{if(null!==h)h.onWorkStopped(k,c)}finally{if(b.__count--,null!==h&&
+0===b.__count)h.onInteractionScheduledWorkCompleted(b)}}}}return l};
+exports.unstable_wrap=function(e){function d(){var d=exports.__interactionsRef.current;exports.__interactionsRef.current=c;b=exports.__subscriberRef.current;try{var h=void 0;try{if(null!==b)b.onWorkStarted(c,a)}finally{try{h=e.apply(void 0,arguments)}finally{if(exports.__interactionsRef.current=d,null!==b)b.onWorkStopped(c,a)}}return h}finally{f||(f=!0,c.forEach(function(a){a.__count--;if(null!==b&&0===a.__count)b.onInteractionScheduledWorkCompleted(a)}))}}var a=1<arguments.length&&void 0!==arguments[1]?
+arguments[1]:0,c=exports.__interactionsRef.current,b=exports.__subscriberRef.current;if(null!==b)b.onWorkScheduled(c,a);c.forEach(function(a){a.__count++});var f=!1;d.cancel=function(){b=exports.__subscriberRef.current;try{if(null!==b)b.onWorkCanceled(c,a)}finally{c.forEach(function(a){a.__count--;if(b&&0===a.__count)b.onInteractionScheduledWorkCompleted(a)})}};return d};
+exports.unstable_subscribe=function(e){n.add(e);1===n.size&&(exports.__subscriberRef.current={onInteractionScheduledWorkCompleted:q,onInteractionTraced:p,onWorkCanceled:v,onWorkScheduled:r,onWorkStarted:t,onWorkStopped:u})};exports.unstable_unsubscribe=function(e){n.delete(e);0===n.size&&(exports.__subscriberRef.current=null)};

node_modules/schedule/cjs/schedule.development.js

@@ -0,0 +1,422 @@
+/** @license React v16.5.2
+ * schedule.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';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+/* eslint-disable no-var */
+
+// TODO: Currently there's only a single priority level, Deferred. Will add
+// additional priorities.
+var DEFERRED_TIMEOUT = 5000;
+
+// Callbacks are stored as a circular, doubly linked list.
+var firstCallbackNode = null;
+
+var isPerformingWork = false;
+
+var isHostCallbackScheduled = false;
+
+var hasNativePerformanceNow = typeof performance === 'object' && typeof performance.now === 'function';
+
+var timeRemaining;
+if (hasNativePerformanceNow) {
+  timeRemaining = function () {
+    // We assume that if we have a performance timer that the rAF callback
+    // gets a performance timer value. Not sure if this is always true.
+    var remaining = getFrameDeadline() - performance.now();
+    return remaining > 0 ? remaining : 0;
+  };
+} else {
+  timeRemaining = function () {
+    // Fallback to Date.now()
+    var remaining = getFrameDeadline() - Date.now();
+    return remaining > 0 ? remaining : 0;
+  };
+}
+
+var deadlineObject = {
+  timeRemaining: timeRemaining,
+  didTimeout: false
+};
+
+function ensureHostCallbackIsScheduled() {
+  if (isPerformingWork) {
+    // Don't schedule work yet; wait until the next time we yield.
+    return;
+  }
+  // Schedule the host callback using the earliest timeout in the list.
+  var timesOutAt = firstCallbackNode.timesOutAt;
+  if (!isHostCallbackScheduled) {
+    isHostCallbackScheduled = true;
+  } else {
+    // Cancel the existing host callback.
+    cancelCallback();
+  }
+  requestCallback(flushWork, timesOutAt);
+}
+
+function flushFirstCallback(node) {
+  var flushedNode = firstCallbackNode;
+
+  // Remove the node from the list before calling the callback. That way the
+  // list is in a consistent state even if the callback throws.
+  var next = firstCallbackNode.next;
+  if (firstCallbackNode === next) {
+    // This is the last callback in the list.
+    firstCallbackNode = null;
+    next = null;
+  } else {
+    var previous = firstCallbackNode.previous;
+    firstCallbackNode = previous.next = next;
+    next.previous = previous;
+  }
+
+  flushedNode.next = flushedNode.previous = null;
+
+  // Now it's safe to call the callback.
+  var callback = flushedNode.callback;
+  callback(deadlineObject);
+}
+
+function flushWork(didTimeout) {
+  isPerformingWork = true;
+  deadlineObject.didTimeout = didTimeout;
+  try {
+    if (didTimeout) {
+      // Flush all the timed out callbacks without yielding.
+      while (firstCallbackNode !== null) {
+        // Read the current time. Flush all the callbacks that expire at or
+        // earlier than that time. Then read the current time again and repeat.
+        // This optimizes for as few performance.now calls as possible.
+        var currentTime = exports.unstable_now();
+        if (firstCallbackNode.timesOutAt <= currentTime) {
+          do {
+            flushFirstCallback();
+          } while (firstCallbackNode !== null && firstCallbackNode.timesOutAt <= currentTime);
+          continue;
+        }
+        break;
+      }
+    } else {
+      // Keep flushing callbacks until we run out of time in the frame.
+      if (firstCallbackNode !== null) {
+        do {
+          flushFirstCallback();
+        } while (firstCallbackNode !== null && getFrameDeadline() - exports.unstable_now() > 0);
+      }
+    }
+  } finally {
+    isPerformingWork = false;
+    if (firstCallbackNode !== null) {
+      // There's still work remaining. Request another callback.
+      ensureHostCallbackIsScheduled(firstCallbackNode);
+    } else {
+      isHostCallbackScheduled = false;
+    }
+  }
+}
+
+function unstable_scheduleWork(callback, options) {
+  var currentTime = exports.unstable_now();
+
+  var timesOutAt;
+  if (options !== undefined && options !== null && options.timeout !== null && options.timeout !== undefined) {
+    // Check for an explicit timeout
+    timesOutAt = currentTime + options.timeout;
+  } else {
+    // Compute an absolute timeout using the default constant.
+    timesOutAt = currentTime + DEFERRED_TIMEOUT;
+  }
+
+  var newNode = {
+    callback: callback,
+    timesOutAt: timesOutAt,
+    next: null,
+    previous: null
+  };
+
+  // Insert the new callback into the list, sorted by its timeout.
+  if (firstCallbackNode === null) {
+    // This is the first callback in the list.
+    firstCallbackNode = newNode.next = newNode.previous = newNode;
+    ensureHostCallbackIsScheduled(firstCallbackNode);
+  } else {
+    var next = null;
+    var node = firstCallbackNode;
+    do {
+      if (node.timesOutAt > timesOutAt) {
+        // The new callback times out before this one.
+        next = node;
+        break;
+      }
+      node = node.next;
+    } while (node !== firstCallbackNode);
+
+    if (next === null) {
+      // No callback with a later timeout was found, which means the new
+      // callback has the latest timeout in the list.
+      next = firstCallbackNode;
+    } else if (next === firstCallbackNode) {
+      // The new callback has the earliest timeout in the entire list.
+      firstCallbackNode = newNode;
+      ensureHostCallbackIsScheduled(firstCallbackNode);
+    }
+
+    var previous = next.previous;
+    previous.next = next.previous = newNode;
+    newNode.next = next;
+    newNode.previous = previous;
+  }
+
+  return newNode;
+}
+
+function unstable_cancelScheduledWork(callbackNode) {
+  var next = callbackNode.next;
+  if (next === null) {
+    // Already cancelled.
+    return;
+  }
+
+  if (next === callbackNode) {
+    // This is the only scheduled callback. Clear the list.
+    firstCallbackNode = null;
+  } else {
+    // Remove the callback from its position in the list.
+    if (callbackNode === firstCallbackNode) {
+      firstCallbackNode = next;
+    }
+    var previous = callbackNode.previous;
+    previous.next = next;
+    next.previous = previous;
+  }
+
+  callbackNode.next = callbackNode.previous = null;
+}
+
+// The remaining code is essentially a polyfill for requestIdleCallback. It
+// works by scheduling a requestAnimationFrame, storing the time for the start
+// of the frame, then scheduling a postMessage which gets scheduled after paint.
+// Within the postMessage handler do as much work as possible until time + frame
+// rate. By separating the idle call into a separate event tick we ensure that
+// layout, paint and other browser work is counted against the available time.
+// The frame rate is dynamically adjusted.
+
+// We capture a local reference to any global, in case it gets polyfilled after
+// this module is initially evaluated. We want to be using a
+// consistent implementation.
+var localDate = Date;
+
+// This initialization code may run even on server environments if a component
+// just imports ReactDOM (e.g. for findDOMNode). Some environments might not
+// have setTimeout or clearTimeout. However, we always expect them to be defined
+// on the client. https://github.com/facebook/react/pull/13088
+var localSetTimeout = typeof setTimeout === 'function' ? setTimeout : undefined;
+var localClearTimeout = typeof clearTimeout === 'function' ? clearTimeout : undefined;
+
+// We don't expect either of these to necessarily be defined, but we will error
+// later if they are missing on the client.
+var localRequestAnimationFrame = typeof requestAnimationFrame === 'function' ? requestAnimationFrame : undefined;
+var localCancelAnimationFrame = typeof cancelAnimationFrame === 'function' ? cancelAnimationFrame : undefined;
+
+// requestAnimationFrame does not run when the tab is in the background. If
+// we're backgrounded we prefer for that work to happen so that the page
+// continues to load in the background. So we also schedule a 'setTimeout' as
+// a fallback.
+// TODO: Need a better heuristic for backgrounded work.
+var ANIMATION_FRAME_TIMEOUT = 100;
+var rAFID;
+var rAFTimeoutID;
+var requestAnimationFrameWithTimeout = function (callback) {
+  // schedule rAF and also a setTimeout
+  rAFID = localRequestAnimationFrame(function (timestamp) {
+    // cancel the setTimeout
+    localClearTimeout(rAFTimeoutID);
+    callback(timestamp);
+  });
+  rAFTimeoutID = localSetTimeout(function () {
+    // cancel the requestAnimationFrame
+    localCancelAnimationFrame(rAFID);
+    callback(exports.unstable_now());
+  }, ANIMATION_FRAME_TIMEOUT);
+};
+
+if (hasNativePerformanceNow) {
+  var Performance = performance;
+  exports.unstable_now = function () {
+    return Performance.now();
+  };
+} else {
+  exports.unstable_now = function () {
+    return localDate.now();
+  };
+}
+
+var requestCallback;
+var cancelCallback;
+var getFrameDeadline;
+
+if (typeof window === 'undefined') {
+  // If this accidentally gets imported in a non-browser environment, fallback
+  // to a naive implementation.
+  var timeoutID = -1;
+  requestCallback = function (callback, absoluteTimeout) {
+    timeoutID = setTimeout(callback, 0, true);
+  };
+  cancelCallback = function () {
+    clearTimeout(timeoutID);
+  };
+  getFrameDeadline = function () {
+    return 0;
+  };
+} else if (window._schedMock) {
+  // Dynamic injection, only for testing purposes.
+  var impl = window._schedMock;
+  requestCallback = impl[0];
+  cancelCallback = impl[1];
+  getFrameDeadline = impl[2];
+} else {
+  if (typeof console !== 'undefined') {
+    if (typeof localRequestAnimationFrame !== 'function') {
+      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 localCancelAnimationFrame !== 'function') {
+      console.error("This browser doesn't support cancelAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
+    }
+  }
+
+  var scheduledCallback = null;
+  var isIdleScheduled = false;
+  var timeoutTime = -1;
+
+  var isAnimationFrameScheduled = false;
+
+  var isPerformingIdleWork = false;
+
+  var frameDeadline = 0;
+  // We start out assuming that we run at 30fps but then the heuristic tracking
+  // will adjust this value to a faster fps if we get more frequent animation
+  // frames.
+  var previousFrameTime = 33;
+  var activeFrameTime = 33;
+
+  getFrameDeadline = function () {
+    return frameDeadline;
+  };
+
+  // We use the postMessage trick to defer idle work until after the repaint.
+  var messageKey = '__reactIdleCallback$' + Math.random().toString(36).slice(2);
+  var idleTick = function (event) {
+    if (event.source !== window || event.data !== messageKey) {
+      return;
+    }
+
+    isIdleScheduled = false;
+
+    var currentTime = exports.unstable_now();
+
+    var didTimeout = false;
+    if (frameDeadline - currentTime <= 0) {
+      // There's no time left in this idle period. Check if the callback has
+      // a timeout and whether it's been exceeded.
+      if (timeoutTime !== -1 && timeoutTime <= currentTime) {
+        // Exceeded the timeout. Invoke the callback even though there's no
+        // time left.
+        didTimeout = true;
+      } else {
+        // No timeout.
+        if (!isAnimationFrameScheduled) {
+          // Schedule another animation callback so we retry later.
+          isAnimationFrameScheduled = true;
+          requestAnimationFrameWithTimeout(animationTick);
+        }
+        // Exit without invoking the callback.
+        return;
+      }
+    }
+
+    timeoutTime = -1;
+    var callback = scheduledCallback;
+    scheduledCallback = null;
+    if (callback !== null) {
+      isPerformingIdleWork = true;
+      try {
+        callback(didTimeout);
+      } finally {
+        isPerformingIdleWork = false;
+      }
+    }
+  };
+  // Assumes that we have addEventListener in this environment. Might need
+  // something better for old IE.
+  window.addEventListener('message', idleTick, false);
+
+  var animationTick = function (rafTime) {
+    isAnimationFrameScheduled = false;
+    var nextFrameTime = rafTime - frameDeadline + activeFrameTime;
+    if (nextFrameTime < activeFrameTime && previousFrameTime < activeFrameTime) {
+      if (nextFrameTime < 8) {
+        // Defensive coding. We don't support higher frame rates than 120hz.
+        // If we get lower than that, it is probably a bug.
+        nextFrameTime = 8;
+      }
+      // If one frame goes long, then the next one can be short to catch up.
+      // If two frames are short in a row, then that's an indication that we
+      // actually have a higher frame rate than what we're currently optimizing.
+      // We adjust our heuristic dynamically accordingly. For example, if we're
+      // running on 120hz display or 90hz VR display.
+      // Take the max of the two in case one of them was an anomaly due to
+      // missed frame deadlines.
+      activeFrameTime = nextFrameTime < previousFrameTime ? previousFrameTime : nextFrameTime;
+    } else {
+      previousFrameTime = nextFrameTime;
+    }
+    frameDeadline = rafTime + activeFrameTime;
+    if (!isIdleScheduled) {
+      isIdleScheduled = true;
+      window.postMessage(messageKey, '*');
+    }
+  };
+
+  requestCallback = function (callback, absoluteTimeout) {
+    scheduledCallback = callback;
+    timeoutTime = absoluteTimeout;
+    if (isPerformingIdleWork) {
+      // If we're already performing idle work, an error must have been thrown.
+      // Don't wait for the next frame. Continue working ASAP, in a new event.
+      window.postMessage(messageKey, '*');
+    } else if (!isAnimationFrameScheduled) {
+      // If rAF didn't already schedule one, we need to schedule a frame.
+      // TODO: If this rAF doesn't materialize because the browser throttles, we
+      // might want to still have setTimeout trigger rIC as a backup to ensure
+      // that we keep performing work.
+      isAnimationFrameScheduled = true;
+      requestAnimationFrameWithTimeout(animationTick);
+    }
+  };
+
+  cancelCallback = function () {
+    scheduledCallback = null;
+    isIdleScheduled = false;
+    timeoutTime = -1;
+  };
+}
+
+exports.unstable_scheduleWork = unstable_scheduleWork;
+exports.unstable_cancelScheduledWork = unstable_cancelScheduledWork;
+  })();
+}

node_modules/schedule/cjs/schedule.production.min.js

@@ -0,0 +1,16 @@
+/** @license React v16.5.2
+ * schedule.production.min.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';Object.defineProperty(exports,"__esModule",{value:!0});var c=null,e=!1,f=!1,g="object"===typeof performance&&"function"===typeof performance.now,l={timeRemaining:g?function(){var a=h()-performance.now();return 0<a?a:0}:function(){var a=h()-Date.now();return 0<a?a:0},didTimeout:!1};function m(){if(!e){var a=c.timesOutAt;f?n():f=!0;p(q,a)}}function r(){var a=c,b=c.next;if(c===b)c=null;else{var d=c.previous;c=d.next=b;b.previous=d}a.next=a.previous=null;a=a.callback;a(l)}
+function q(a){e=!0;l.didTimeout=a;try{if(a)for(;null!==c;){var b=exports.unstable_now();if(c.timesOutAt<=b){do r();while(null!==c&&c.timesOutAt<=b)}else break}else if(null!==c){do r();while(null!==c&&0<h()-exports.unstable_now())}}finally{e=!1,null!==c?m(c):f=!1}}
+var t=Date,u="function"===typeof setTimeout?setTimeout:void 0,v="function"===typeof clearTimeout?clearTimeout:void 0,w="function"===typeof requestAnimationFrame?requestAnimationFrame:void 0,x="function"===typeof cancelAnimationFrame?cancelAnimationFrame:void 0,y,z;function A(a){y=w(function(b){v(z);a(b)});z=u(function(){x(y);a(exports.unstable_now())},100)}if(g){var B=performance;exports.unstable_now=function(){return B.now()}}else exports.unstable_now=function(){return t.now()};var p,n,h;
+if("undefined"===typeof window){var C=-1;p=function(a){C=setTimeout(a,0,!0)};n=function(){clearTimeout(C)};h=function(){return 0}}else if(window._schedMock){var D=window._schedMock;p=D[0];n=D[1];h=D[2]}else{"undefined"!==typeof console&&("function"!==typeof w&&console.error("This browser doesn't support requestAnimationFrame. Make sure that you load a polyfill in older browsers. https://fb.me/react-polyfills"),"function"!==typeof x&&console.error("This browser doesn't support cancelAnimationFrame. Make sure that you load a polyfill in older browsers. https://fb.me/react-polyfills"));
+var E=null,F=!1,G=-1,H=!1,I=!1,J=0,K=33,L=33;h=function(){return J};var M="__reactIdleCallback$"+Math.random().toString(36).slice(2);window.addEventListener("message",function(a){if(a.source===window&&a.data===M){F=!1;var b=exports.unstable_now();a=!1;if(0>=J-b)if(-1!==G&&G<=b)a=!0;else{H||(H=!0,A(N));return}G=-1;b=E;E=null;if(null!==b){I=!0;try{b(a)}finally{I=!1}}}},!1);var N=function(a){H=!1;var b=a-J+L;b<L&&K<L?(8>b&&(b=8),L=b<K?K:b):K=b;J=a+L;F||(F=!0,window.postMessage(M,"*"))};p=function(a,
+b){E=a;G=b;I?window.postMessage(M,"*"):H||(H=!0,A(N))};n=function(){E=null;F=!1;G=-1}}exports.unstable_scheduleWork=function(a,b){var d=exports.unstable_now();b=void 0!==b&&null!==b&&null!==b.timeout&&void 0!==b.timeout?d+b.timeout:d+5E3;a={callback:a,timesOutAt:b,next:null,previous:null};if(null===c)c=a.next=a.previous=a,m(c);else{d=null;var k=c;do{if(k.timesOutAt>b){d=k;break}k=k.next}while(k!==c);null===d?d=c:d===c&&(c=a,m(c));b=d.previous;b.next=d.previous=a;a.next=d;a.previous=b}return a};
+exports.unstable_cancelScheduledWork=function(a){var b=a.next;if(null!==b){if(b===a)c=null;else{a===c&&(c=b);var d=a.previous;d.next=b;b.previous=d}a.next=a.previous=null}};