rmwc/react-versions/react-16.0.x/node_modules/react-dom/umd/react-dom-unstable-native-dependencies.development.js

A thin React wrapper for Material Design (Web) Components

/** @license React v16.0.0
 * react-dom-unstable-native-dependencies.development.js
 *
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('react-dom')) :
	typeof define === 'function' && define.amd ? define(['react-dom'], factory) :
	(global.ReactDOMUnstableNativeDependencies = factory(global.ReactDOM));
}(this, (function (reactDom) { 'use strict';

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @providesModule reactProdInvariant
 * 
 */

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 */

/**
 * Use invariant() to assert state which your program assumes to be true.
 *
 * Provide sprintf-style format (only %s is supported) and arguments
 * to provide information about what broke and what you were
 * expecting.
 *
 * The invariant message will be stripped in production, but the invariant
 * will remain to ensure logic does not differ in production.
 */

var validateFormat = function validateFormat(format) {};

{
  validateFormat = function validateFormat(format) {
    if (format === undefined) {
      throw new Error('invariant requires an error message argument');
    }
  };
}

function invariant(condition, format, a, b, c, d, e, f) {
  validateFormat(format);

  if (!condition) {
    var error;
    if (format === undefined) {
      error = new Error('Minified exception occurred; use the non-minified dev environment ' + 'for the full error message and additional helpful warnings.');
    } else {
      var args = [a, b, c, d, e, f];
      var argIndex = 0;
      error = new Error(format.replace(/%s/g, function () {
        return args[argIndex++];
      }));
      error.name = 'Invariant Violation';
    }

    error.framesToPop = 1; // we don't care about invariant's own frame
    throw error;
  }
}

var invariant_1 = invariant;

var ReactErrorUtils = {
  // Used by Fiber to simulate a try-catch.
  _caughtError: null,
  _hasCaughtError: false,

  // Used by event system to capture/rethrow the first error.
  _rethrowError: null,
  _hasRethrowError: false,

  injection: {
    injectErrorUtils: function (injectedErrorUtils) {
      !(typeof injectedErrorUtils.invokeGuardedCallback === 'function') ? invariant_1(false, 'Injected invokeGuardedCallback() must be a function.') : void 0;
      invokeGuardedCallback = injectedErrorUtils.invokeGuardedCallback;
    }
  },

  /**
   * Call a function while guarding against errors that happens within it.
   * Returns an error if it throws, otherwise null.
   *
   * In production, this is implemented using a try-catch. The reason we don't
   * use a try-catch directly is so that we can swap out a different
   * implementation in DEV mode.
   *
   * @param {String} name of the guard to use for logging or debugging
   * @param {Function} func The function to invoke
   * @param {*} context The context to use when calling the function
   * @param {...*} args Arguments for function
   */
  invokeGuardedCallback: function (name, func, context, a, b, c, d, e, f) {
    invokeGuardedCallback.apply(ReactErrorUtils, arguments);
  },

  /**
   * Same as invokeGuardedCallback, but instead of returning an error, it stores
   * it in a global so it can be rethrown by `rethrowCaughtError` later.
   * TODO: See if _caughtError and _rethrowError can be unified.
   *
   * @param {String} name of the guard to use for logging or debugging
   * @param {Function} func The function to invoke
   * @param {*} context The context to use when calling the function
   * @param {...*} args Arguments for function
   */
  invokeGuardedCallbackAndCatchFirstError: function (name, func, context, a, b, c, d, e, f) {
    ReactErrorUtils.invokeGuardedCallback.apply(this, arguments);
    if (ReactErrorUtils.hasCaughtError()) {
      var error = ReactErrorUtils.clearCaughtError();
      if (!ReactErrorUtils._hasRethrowError) {
        ReactErrorUtils._hasRethrowError = true;
        ReactErrorUtils._rethrowError = error;
      }
    }
  },

  /**
   * During execution of guarded functions we will capture the first error which
   * we will rethrow to be handled by the top level error handler.
   */
  rethrowCaughtError: function () {
    return rethrowCaughtError.apply(ReactErrorUtils, arguments);
  },

  hasCaughtError: function () {
    return ReactErrorUtils._hasCaughtError;
  },

  clearCaughtError: function () {
    if (ReactErrorUtils._hasCaughtError) {
      var error = ReactErrorUtils._caughtError;
      ReactErrorUtils._caughtError = null;
      ReactErrorUtils._hasCaughtError = false;
      return error;
    } else {
      invariant_1(false, 'clearCaughtError was called but no error was captured. This error is likely caused by a bug in React. Please file an issue.');
    }
  }
};

var invokeGuardedCallback = function (name, func, context, a, b, c, d, e, f) {
  ReactErrorUtils._hasCaughtError = false;
  ReactErrorUtils._caughtError = null;
  var funcArgs = Array.prototype.slice.call(arguments, 3);
  try {
    func.apply(context, funcArgs);
  } catch (error) {
    ReactErrorUtils._caughtError = error;
    ReactErrorUtils._hasCaughtError = true;
  }
};

{
  // In DEV mode, we swap out invokeGuardedCallback for a special version
  // that plays more nicely with the browser's DevTools. The idea is to preserve
  // "Pause on exceptions" behavior. Because React wraps all user-provided
  // functions in invokeGuardedCallback, and the production version of
  // invokeGuardedCallback uses a try-catch, all user exceptions are treated
  // like caught exceptions, and the DevTools won't pause unless the developer
  // takes the extra step of enabling pause on caught exceptions. This is
  // untintuitive, though, because even though React has caught the error, from
  // the developer's perspective, the error is uncaught.
  //
  // To preserve the expected "Pause on exceptions" behavior, we don't use a
  // try-catch in DEV. Instead, we synchronously dispatch a fake event to a fake
  // DOM node, and call the user-provided callback from inside an event handler
  // for that fake event. If the callback throws, the error is "captured" using
  // a global event handler. But because the error happens in a different
  // event loop context, it does not interrupt the normal program flow.
  // Effectively, this gives us try-catch behavior without actually using
  // try-catch. Neat!

  // Check that the browser supports the APIs we need to implement our special
  // DEV version of invokeGuardedCallback
  if (typeof window !== 'undefined' && typeof window.dispatchEvent === 'function' && typeof document !== 'undefined' && typeof document.createEvent === 'function') {
    var fakeNode = document.createElement('react');

    var invokeGuardedCallbackDev = function (name, func, context, a, b, c, d, e, f) {
      // Keeps track of whether the user-provided callback threw an error. We
      // set this to true at the beginning, then set it to false right after
      // calling the function. If the function errors, `didError` will never be
      // set to false. This strategy works even if the browser is flaky and
      // fails to call our global error handler, because it doesn't rely on
      // the error event at all.
      var didError = true;

      // Create an event handler for our fake event. We will synchronously
      // dispatch our fake event using `dispatchEvent`. Inside the handler, we
      // call the user-provided callback.
      var funcArgs = Array.prototype.slice.call(arguments, 3);
      function callCallback() {
        // We immediately remove the callback from event listeners so that
        // nested `invokeGuardedCallback` calls do not clash. Otherwise, a
        // nested call would trigger the fake event handlers of any call higher
        // in the stack.
        fakeNode.removeEventListener(evtType, callCallback, false);
        func.apply(context, funcArgs);
        didError = false;
      }

      // Create a global error event handler. We use this to capture the value
      // that was thrown. It's possible that this error handler will fire more
      // than once; for example, if non-React code also calls `dispatchEvent`
      // and a handler for that event throws. We should be resilient to most of
      // those cases. Even if our error event handler fires more than once, the
      // last error event is always used. If the callback actually does error,
      // we know that the last error event is the correct one, because it's not
      // possible for anything else to have happened in between our callback
      // erroring and the code that follows the `dispatchEvent` call below. If
      // the callback doesn't error, but the error event was fired, we know to
      // ignore it because `didError` will be false, as described above.
      var error = void 0;
      // Use this to track whether the error event is ever called.
      var didSetError = false;
      var isCrossOriginError = false;

      function onError(event) {
        error = event.error;
        didSetError = true;
        if (error === null && event.colno === 0 && event.lineno === 0) {
          isCrossOriginError = true;
        }
      }

      // Create a fake event type.
      var evtType = 'react-' + (name ? name : 'invokeguardedcallback');

      // Attach our event handlers
      window.addEventListener('error', onError);
      fakeNode.addEventListener(evtType, callCallback, false);

      // Synchronously dispatch our fake event. If the user-provided function
      // errors, it will trigger our global error handler.
      var evt = document.createEvent('Event');
      evt.initEvent(evtType, false, false);
      fakeNode.dispatchEvent(evt);

      if (didError) {
        if (!didSetError) {
          // The callback errored, but the error event never fired.
          error = new Error('An error was thrown inside one of your components, but React ' + "doesn't know what it was. This is likely due to browser " + 'flakiness. React does its best to preserve the "Pause on ' + 'exceptions" behavior of the DevTools, which requires some ' + "DEV-mode only tricks. It's possible that these don't work in " + 'your browser. Try triggering the error in production mode, ' + 'or switching to a modern browser. If you suspect that this is ' + 'actually an issue with React, please file an issue.');
        } else if (isCrossOriginError) {
          error = new Error("A cross-origin error was thrown. React doesn't have access to " + 'the actual error object in development. ' + 'See https://fb.me/react-crossorigin-error for more information.');
        }
        ReactErrorUtils._hasCaughtError = true;
        ReactErrorUtils._caughtError = error;
      } else {
        ReactErrorUtils._hasCaughtError = false;
        ReactErrorUtils._caughtError = null;
      }

      // Remove our event listeners
      window.removeEventListener('error', onError);
    };

    invokeGuardedCallback = invokeGuardedCallbackDev;
  }
}

var rethrowCaughtError = function () {
  if (ReactErrorUtils._hasRethrowError) {
    var error = ReactErrorUtils._rethrowError;
    ReactErrorUtils._rethrowError = null;
    ReactErrorUtils._hasRethrowError = false;
    throw error;
  }
};

var ReactErrorUtils_1 = ReactErrorUtils;

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * 
 */

function makeEmptyFunction(arg) {
  return function () {
    return arg;
  };
}

/**
 * This function accepts and discards inputs; it has no side effects. This is
 * primarily useful idiomatically for overridable function endpoints which
 * always need to be callable, since JS lacks a null-call idiom ala Cocoa.
 */
var emptyFunction = function emptyFunction() {};

emptyFunction.thatReturns = makeEmptyFunction;
emptyFunction.thatReturnsFalse = makeEmptyFunction(false);
emptyFunction.thatReturnsTrue = makeEmptyFunction(true);
emptyFunction.thatReturnsNull = makeEmptyFunction(null);
emptyFunction.thatReturnsThis = function () {
  return this;
};
emptyFunction.thatReturnsArgument = function (arg) {
  return arg;
};

var emptyFunction_1 = emptyFunction;

/**
 * Similar to invariant but only logs a warning if the condition is not met.
 * This can be used to log issues in development environments in critical
 * paths. Removing the logging code for production environments will keep the
 * same logic and follow the same code paths.
 */

var warning$1 = emptyFunction_1;

{
  var printWarning = function printWarning(format) {
    for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      args[_key - 1] = arguments[_key];
    }

    var argIndex = 0;
    var message = 'Warning: ' + format.replace(/%s/g, function () {
      return args[argIndex++];
    });
    if (typeof console !== 'undefined') {
      console.error(message);
    }
    try {
      // --- Welcome to debugging React ---
      // This error was thrown as a convenience so that you can use this stack
      // to find the callsite that caused this warning to fire.
      throw new Error(message);
    } catch (x) {}
  };

  warning$1 = function warning(condition, format) {
    if (format === undefined) {
      throw new Error('`warning(condition, format, ...args)` requires a warning ' + 'message argument');
    }

    if (format.indexOf('Failed Composite propType: ') === 0) {
      return; // Ignore CompositeComponent proptype check.
    }

    if (!condition) {
      for (var _len2 = arguments.length, args = Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) {
        args[_key2 - 2] = arguments[_key2];
      }

      printWarning.apply(undefined, [format].concat(args));
    }
  };
}

var warning_1 = warning$1;

{
  var warning = warning_1;
}

/**
 * Injected dependencies:
 */

/**
 * - `ComponentTree`: [required] Module that can convert between React instances
 *   and actual node references.
 */
var ComponentTree;
var injection = {
  injectComponentTree: function (Injected) {
    ComponentTree = Injected;
    {
      warning(Injected && Injected.getNodeFromInstance && Injected.getInstanceFromNode, 'EventPluginUtils.injection.injectComponentTree(...): Injected ' + 'module is missing getNodeFromInstance or getInstanceFromNode.');
    }
  }
};

function isEndish(topLevelType) {
  return topLevelType === 'topMouseUp' || topLevelType === 'topTouchEnd' || topLevelType === 'topTouchCancel';
}

function isMoveish(topLevelType) {
  return topLevelType === 'topMouseMove' || topLevelType === 'topTouchMove';
}
function isStartish(topLevelType) {
  return topLevelType === 'topMouseDown' || topLevelType === 'topTouchStart';
}

var validateEventDispatches;
{
  validateEventDispatches = function (event) {
    var dispatchListeners = event._dispatchListeners;
    var dispatchInstances = event._dispatchInstances;

    var listenersIsArr = Array.isArray(dispatchListeners);
    var listenersLen = listenersIsArr ? dispatchListeners.length : dispatchListeners ? 1 : 0;

    var instancesIsArr = Array.isArray(dispatchInstances);
    var instancesLen = instancesIsArr ? dispatchInstances.length : dispatchInstances ? 1 : 0;

    warning(instancesIsArr === listenersIsArr && instancesLen === listenersLen, 'EventPluginUtils: Invalid `event`.');
  };
}

/**
 * Dispatch the event to the listener.
 * @param {SyntheticEvent} event SyntheticEvent to handle
 * @param {boolean} simulated If the event is simulated (changes exn behavior)
 * @param {function} listener Application-level callback
 * @param {*} inst Internal component instance
 */
function executeDispatch(event, simulated, listener, inst) {
  var type = event.type || 'unknown-event';
  event.currentTarget = EventPluginUtils.getNodeFromInstance(inst);
  ReactErrorUtils_1.invokeGuardedCallbackAndCatchFirstError(type, listener, undefined, event);
  event.currentTarget = null;
}

/**
 * Standard/simple iteration through an event's collected dispatches.
 */
function executeDispatchesInOrder(event, simulated) {
  var dispatchListeners = event._dispatchListeners;
  var dispatchInstances = event._dispatchInstances;
  {
    validateEventDispatches(event);
  }
  if (Array.isArray(dispatchListeners)) {
    for (var i = 0; i < dispatchListeners.length; i++) {
      if (event.isPropagationStopped()) {
        break;
      }
      // Listeners and Instances are two parallel arrays that are always in sync.
      executeDispatch(event, simulated, dispatchListeners[i], dispatchInstances[i]);
    }
  } else if (dispatchListeners) {
    executeDispatch(event, simulated, dispatchListeners, dispatchInstances);
  }
  event._dispatchListeners = null;
  event._dispatchInstances = null;
}

/**
 * Standard/simple iteration through an event's collected dispatches, but stops
 * at the first dispatch execution returning true, and returns that id.
 *
 * @return {?string} id of the first dispatch execution who's listener returns
 * true, or null if no listener returned true.
 */
function executeDispatchesInOrderStopAtTrueImpl(event) {
  var dispatchListeners = event._dispatchListeners;
  var dispatchInstances = event._dispatchInstances;
  {
    validateEventDispatches(event);
  }
  if (Array.isArray(dispatchListeners)) {
    for (var i = 0; i < dispatchListeners.length; i++) {
      if (event.isPropagationStopped()) {
        break;
      }
      // Listeners and Instances are two parallel arrays that are always in sync.
      if (dispatchListeners[i](event, dispatchInstances[i])) {
        return dispatchInstances[i];
      }
    }
  } else if (dispatchListeners) {
    if (dispatchListeners(event, dispatchInstances)) {
      return dispatchInstances;
    }
  }
  return null;
}

/**
 * @see executeDispatchesInOrderStopAtTrueImpl
 */
function executeDispatchesInOrderStopAtTrue(event) {
  var ret = executeDispatchesInOrderStopAtTrueImpl(event);
  event._dispatchInstances = null;
  event._dispatchListeners = null;
  return ret;
}

/**
 * Execution of a "direct" dispatch - there must be at most one dispatch
 * accumulated on the event or it is considered an error. It doesn't really make
 * sense for an event with multiple dispatches (bubbled) to keep track of the
 * return values at each dispatch execution, but it does tend to make sense when
 * dealing with "direct" dispatches.
 *
 * @return {*} The return value of executing the single dispatch.
 */
function executeDirectDispatch(event) {
  {
    validateEventDispatches(event);
  }
  var dispatchListener = event._dispatchListeners;
  var dispatchInstance = event._dispatchInstances;
  !!Array.isArray(dispatchListener) ? invariant_1(false, 'executeDirectDispatch(...): Invalid `event`.') : void 0;
  event.currentTarget = dispatchListener ? EventPluginUtils.getNodeFromInstance(dispatchInstance) : null;
  var res = dispatchListener ? dispatchListener(event) : null;
  event.currentTarget = null;
  event._dispatchListeners = null;
  event._dispatchInstances = null;
  return res;
}

/**
 * @param {SyntheticEvent} event
 * @return {boolean} True iff number of dispatches accumulated is greater than 0.
 */
function hasDispatches(event) {
  return !!event._dispatchListeners;
}

/**
 * General utilities that are useful in creating custom Event Plugins.
 */
var EventPluginUtils = {
  isEndish: isEndish,
  isMoveish: isMoveish,
  isStartish: isStartish,

  executeDirectDispatch: executeDirectDispatch,
  executeDispatchesInOrder: executeDispatchesInOrder,
  executeDispatchesInOrderStopAtTrue: executeDispatchesInOrderStopAtTrue,
  hasDispatches: hasDispatches,

  getFiberCurrentPropsFromNode: function (node) {
    return ComponentTree.getFiberCurrentPropsFromNode(node);
  },
  getInstanceFromNode: function (node) {
    return ComponentTree.getInstanceFromNode(node);
  },
  getNodeFromInstance: function (node) {
    return ComponentTree.getNodeFromInstance(node);
  },

  injection: injection
};

var EventPluginUtils_1 = EventPluginUtils;

/**
 * Injectable ordering of event plugins.
 */
var eventPluginOrder = null;

/**
 * Injectable mapping from names to event plugin modules.
 */
var namesToPlugins = {};

/**
 * Recomputes the plugin list using the injected plugins and plugin ordering.
 *
 * @private
 */
function recomputePluginOrdering() {
  if (!eventPluginOrder) {
    // Wait until an `eventPluginOrder` is injected.
    return;
  }
  for (var pluginName in namesToPlugins) {
    var pluginModule = namesToPlugins[pluginName];
    var pluginIndex = eventPluginOrder.indexOf(pluginName);
    !(pluginIndex > -1) ? invariant_1(false, 'EventPluginRegistry: Cannot inject event plugins that do not exist in the plugin ordering, `%s`.', pluginName) : void 0;
    if (EventPluginRegistry.plugins[pluginIndex]) {
      continue;
    }
    !pluginModule.extractEvents ? invariant_1(false, 'EventPluginRegistry: Event plugins must implement an `extractEvents` method, but `%s` does not.', pluginName) : void 0;
    EventPluginRegistry.plugins[pluginIndex] = pluginModule;
    var publishedEvents = pluginModule.eventTypes;
    for (var eventName in publishedEvents) {
      !publishEventForPlugin(publishedEvents[eventName], pluginModule, eventName) ? invariant_1(false, 'EventPluginRegistry: Failed to publish event `%s` for plugin `%s`.', eventName, pluginName) : void 0;
    }
  }
}

/**
 * Publishes an event so that it can be dispatched by the supplied plugin.
 *
 * @param {object} dispatchConfig Dispatch configuration for the event.
 * @param {object} PluginModule Plugin publishing the event.
 * @return {boolean} True if the event was successfully published.
 * @private
 */
function publishEventForPlugin(dispatchConfig, pluginModule, eventName) {
  !!EventPluginRegistry.eventNameDispatchConfigs.hasOwnProperty(eventName) ? invariant_1(false, 'EventPluginHub: More than one plugin attempted to publish the same event name, `%s`.', eventName) : void 0;
  EventPluginRegistry.eventNameDispatchConfigs[eventName] = dispatchConfig;

  var phasedRegistrationNames = dispatchConfig.phasedRegistrationNames;
  if (phasedRegistrationNames) {
    for (var phaseName in phasedRegistrationNames) {
      if (phasedRegistrationNames.hasOwnProperty(phaseName)) {
        var phasedRegistrationName = phasedRegistrationNames[phaseName];
        publishRegistrationName(phasedRegistrationName, pluginModule, eventName);
      }
    }
    return true;
  } else if (dispatchConfig.registrationName) {
    publishRegistrationName(dispatchConfig.registrationName, pluginModule, eventName);
    return true;
  }
  return false;
}

/**
 * Publishes a registration name that is used to identify dispatched events.
 *
 * @param {string} registrationName Registration name to add.
 * @param {object} PluginModule Plugin publishing the event.
 * @private
 */
function publishRegistrationName(registrationName, pluginModule, eventName) {
  !!EventPluginRegistry.registrationNameModules[registrationName] ? invariant_1(false, 'EventPluginHub: More than one plugin attempted to publish the same registration name, `%s`.', registrationName) : void 0;
  EventPluginRegistry.registrationNameModules[registrationName] = pluginModule;
  EventPluginRegistry.registrationNameDependencies[registrationName] = pluginModule.eventTypes[eventName].dependencies;

  {
    var lowerCasedName = registrationName.toLowerCase();
    EventPluginRegistry.possibleRegistrationNames[lowerCasedName] = registrationName;

    if (registrationName === 'onDoubleClick') {
      EventPluginRegistry.possibleRegistrationNames.ondblclick = registrationName;
    }
  }
}

/**
 * Registers plugins so that they can extract and dispatch events.
 *
 * @see {EventPluginHub}
 */
var EventPluginRegistry = {
  /**
   * Ordered list of injected plugins.
   */
  plugins: [],

  /**
   * Mapping from event name to dispatch config
   */
  eventNameDispatchConfigs: {},

  /**
   * Mapping from registration name to plugin module
   */
  registrationNameModules: {},

  /**
   * Mapping from registration name to event name
   */
  registrationNameDependencies: {},

  /**
   * Mapping from lowercase registration names to the properly cased version,
   * used to warn in the case of missing event handlers. Available
   * only in true.
   * @type {Object}
   */
  possibleRegistrationNames: {},
  // Trust the developer to only use possibleRegistrationNames in true

  /**
   * Injects an ordering of plugins (by plugin name). This allows the ordering
   * to be decoupled from injection of the actual plugins so that ordering is
   * always deterministic regardless of packaging, on-the-fly injection, etc.
   *
   * @param {array} InjectedEventPluginOrder
   * @internal
   * @see {EventPluginHub.injection.injectEventPluginOrder}
   */
  injectEventPluginOrder: function (injectedEventPluginOrder) {
    !!eventPluginOrder ? invariant_1(false, 'EventPluginRegistry: Cannot inject event plugin ordering more than once. You are likely trying to load more than one copy of React.') : void 0;
    // Clone the ordering so it cannot be dynamically mutated.
    eventPluginOrder = Array.prototype.slice.call(injectedEventPluginOrder);
    recomputePluginOrdering();
  },

  /**
   * Injects plugins to be used by `EventPluginHub`. The plugin names must be
   * in the ordering injected by `injectEventPluginOrder`.
   *
   * Plugins can be injected as part of page initialization or on-the-fly.
   *
   * @param {object} injectedNamesToPlugins Map from names to plugin modules.
   * @internal
   * @see {EventPluginHub.injection.injectEventPluginsByName}
   */
  injectEventPluginsByName: function (injectedNamesToPlugins) {
    var isOrderingDirty = false;
    for (var pluginName in injectedNamesToPlugins) {
      if (!injectedNamesToPlugins.hasOwnProperty(pluginName)) {
        continue;
      }
      var pluginModule = injectedNamesToPlugins[pluginName];
      if (!namesToPlugins.hasOwnProperty(pluginName) || namesToPlugins[pluginName] !== pluginModule) {
        !!namesToPlugins[pluginName] ? invariant_1(false, 'EventPluginRegistry: Cannot inject two different event plugins using the same name, `%s`.', pluginName) : void 0;
        namesToPlugins[pluginName] = pluginModule;
        isOrderingDirty = true;
      }
    }
    if (isOrderingDirty) {
      recomputePluginOrdering();
    }
  }
};

var EventPluginRegistry_1 = EventPluginRegistry;

/**
 * Accumulates items that must not be null or undefined into the first one. This
 * is used to conserve memory by avoiding array allocations, and thus sacrifices
 * API cleanness. Since `current` can be null before being passed in and not
 * null after this function, make sure to assign it back to `current`:
 *
 * `a = accumulateInto(a, b);`
 *
 * This API should be sparingly used. Try `accumulate` for something cleaner.
 *
 * @return {*|array<*>} An accumulation of items.
 */

function accumulateInto(current, next) {
  !(next != null) ? invariant_1(false, 'accumulateInto(...): Accumulated items must not be null or undefined.') : void 0;

  if (current == null) {
    return next;
  }

  // Both are not empty. Warning: Never call x.concat(y) when you are not
  // certain that x is an Array (x could be a string with concat method).
  if (Array.isArray(current)) {
    if (Array.isArray(next)) {
      current.push.apply(current, next);
      return current;
    }
    current.push(next);
    return current;
  }

  if (Array.isArray(next)) {
    // A bit too dangerous to mutate `next`.
    return [current].concat(next);
  }

  return [current, next];
}

var accumulateInto_1 = accumulateInto;

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @providesModule forEachAccumulated
 * 
 */

/**
 * @param {array} arr an "accumulation" of items which is either an Array or
 * a single item. Useful when paired with the `accumulate` module. This is a
 * simple utility that allows us to reason about a collection of items, but
 * handling the case when there is exactly one item (and we do not need to
 * allocate an array).
 * @param {function} cb Callback invoked with each element or a collection.
 * @param {?} [scope] Scope used as `this` in a callback.
 */

function forEachAccumulated(arr, cb, scope) {
  if (Array.isArray(arr)) {
    arr.forEach(cb, scope);
  } else if (arr) {
    cb.call(scope, arr);
  }
}

var forEachAccumulated_1 = forEachAccumulated;

/**
 * Internal queue of events that have accumulated their dispatches and are
 * waiting to have their dispatches executed.
 */
var eventQueue = null;

/**
 * Dispatches an event and releases it back into the pool, unless persistent.
 *
 * @param {?object} event Synthetic event to be dispatched.
 * @param {boolean} simulated If the event is simulated (changes exn behavior)
 * @private
 */
var executeDispatchesAndRelease = function (event, simulated) {
  if (event) {
    EventPluginUtils_1.executeDispatchesInOrder(event, simulated);

    if (!event.isPersistent()) {
      event.constructor.release(event);
    }
  }
};
var executeDispatchesAndReleaseSimulated = function (e) {
  return executeDispatchesAndRelease(e, true);
};
var executeDispatchesAndReleaseTopLevel = function (e) {
  return executeDispatchesAndRelease(e, false);
};

function isInteractive(tag) {
  return tag === 'button' || tag === 'input' || tag === 'select' || tag === 'textarea';
}

function shouldPreventMouseEvent(name, type, props) {
  switch (name) {
    case 'onClick':
    case 'onClickCapture':
    case 'onDoubleClick':
    case 'onDoubleClickCapture':
    case 'onMouseDown':
    case 'onMouseDownCapture':
    case 'onMouseMove':
    case 'onMouseMoveCapture':
    case 'onMouseUp':
    case 'onMouseUpCapture':
      return !!(props.disabled && isInteractive(type));
    default:
      return false;
  }
}

/**
 * This is a unified interface for event plugins to be installed and configured.
 *
 * Event plugins can implement the following properties:
 *
 *   `extractEvents` {function(string, DOMEventTarget, string, object): *}
 *     Required. When a top-level event is fired, this method is expected to
 *     extract synthetic events that will in turn be queued and dispatched.
 *
 *   `eventTypes` {object}
 *     Optional, plugins that fire events must publish a mapping of registration
 *     names that are used to register listeners. Values of this mapping must
 *     be objects that contain `registrationName` or `phasedRegistrationNames`.
 *
 *   `executeDispatch` {function(object, function, string)}
 *     Optional, allows plugins to override how an event gets dispatched. By
 *     default, the listener is simply invoked.
 *
 * Each plugin that is injected into `EventsPluginHub` is immediately operable.
 *
 * @public
 */
var EventPluginHub = {
  /**
   * Methods for injecting dependencies.
   */
  injection: {
    /**
     * @param {array} InjectedEventPluginOrder
     * @public
     */
    injectEventPluginOrder: EventPluginRegistry_1.injectEventPluginOrder,

    /**
     * @param {object} injectedNamesToPlugins Map from names to plugin modules.
     */
    injectEventPluginsByName: EventPluginRegistry_1.injectEventPluginsByName
  },

  /**
   * @param {object} inst The instance, which is the source of events.
   * @param {string} registrationName Name of listener (e.g. `onClick`).
   * @return {?function} The stored callback.
   */
  getListener: function (inst, registrationName) {
    var listener;

    // TODO: shouldPreventMouseEvent is DOM-specific and definitely should not
    // live here; needs to be moved to a better place soon
    if (typeof inst.tag === 'number') {
      var stateNode = inst.stateNode;
      if (!stateNode) {
        // Work in progress (ex: onload events in incremental mode).
        return null;
      }
      var props = EventPluginUtils_1.getFiberCurrentPropsFromNode(stateNode);
      if (!props) {
        // Work in progress.
        return null;
      }
      listener = props[registrationName];
      if (shouldPreventMouseEvent(registrationName, inst.type, props)) {
        return null;
      }
    } else {
      var currentElement = inst._currentElement;
      if (typeof currentElement === 'string' || typeof currentElement === 'number') {
        // Text node, let it bubble through.
        return null;
      }
      if (!inst._rootNodeID) {
        // If the instance is already unmounted, we have no listeners.
        return null;
      }
      var _props = currentElement.props;
      listener = _props[registrationName];
      if (shouldPreventMouseEvent(registrationName, currentElement.type, _props)) {
        return null;
      }
    }

    !(!listener || typeof listener === 'function') ? invariant_1(false, 'Expected `%s` listener to be a function, instead got a value of `%s` type.', registrationName, typeof listener) : void 0;
    return listener;
  },

  /**
   * Allows registered plugins an opportunity to extract events from top-level
   * native browser events.
   *
   * @return {*} An accumulation of synthetic events.
   * @internal
   */
  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) {
    var events;
    var plugins = EventPluginRegistry_1.plugins;
    for (var i = 0; i < plugins.length; i++) {
      // Not every plugin in the ordering may be loaded at runtime.
      var possiblePlugin = plugins[i];
      if (possiblePlugin) {
        var extractedEvents = possiblePlugin.extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget);
        if (extractedEvents) {
          events = accumulateInto_1(events, extractedEvents);
        }
      }
    }
    return events;
  },

  /**
   * Enqueues a synthetic event that should be dispatched when
   * `processEventQueue` is invoked.
   *
   * @param {*} events An accumulation of synthetic events.
   * @internal
   */
  enqueueEvents: function (events) {
    if (events) {
      eventQueue = accumulateInto_1(eventQueue, events);
    }
  },

  /**
   * Dispatches all synthetic events on the event queue.
   *
   * @internal
   */
  processEventQueue: function (simulated) {
    // Set `eventQueue` to null before processing it so that we can tell if more
    // events get enqueued while processing.
    var processingEventQueue = eventQueue;
    eventQueue = null;
    if (simulated) {
      forEachAccumulated_1(processingEventQueue, executeDispatchesAndReleaseSimulated);
    } else {
      forEachAccumulated_1(processingEventQueue, executeDispatchesAndReleaseTopLevel);
    }
    !!eventQueue ? invariant_1(false, 'processEventQueue(): Additional events were enqueued while processing an event queue. Support for this has not yet been implemented.') : void 0;
    // This would be a good time to rethrow if any of the event handlers threw.
    ReactErrorUtils_1.rethrowCaughtError();
  }
};

var EventPluginHub_1 = EventPluginHub;

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @providesModule ReactTypeOfWork
 * 
 */

var ReactTypeOfWork = {
  IndeterminateComponent: 0, // Before we know whether it is functional or class
  FunctionalComponent: 1,
  ClassComponent: 2,
  HostRoot: 3, // Root of a host tree. Could be nested inside another node.
  HostPortal: 4, // A subtree. Could be an entry point to a different renderer.
  HostComponent: 5,
  HostText: 6,
  CoroutineComponent: 7,
  CoroutineHandlerPhase: 8,
  YieldComponent: 9,
  Fragment: 10
};

var HostComponent = ReactTypeOfWork.HostComponent;

function getParent(inst) {
  if (inst._hostParent !== undefined) {
    return inst._hostParent;
  }
  if (typeof inst.tag === 'number') {
    do {
      inst = inst['return'];
      // TODO: If this is a HostRoot we might want to bail out.
      // That is depending on if we want nested subtrees (layers) to bubble
      // events to their parent. We could also go through parentNode on the
      // host node but that wouldn't work for React Native and doesn't let us
      // do the portal feature.
    } while (inst && inst.tag !== HostComponent);
    if (inst) {
      return inst;
    }
  }
  return null;
}

/**
 * Return the lowest common ancestor of A and B, or null if they are in
 * different trees.
 */
function getLowestCommonAncestor(instA, instB) {
  var depthA = 0;
  for (var tempA = instA; tempA; tempA = getParent(tempA)) {
    depthA++;
  }
  var depthB = 0;
  for (var tempB = instB; tempB; tempB = getParent(tempB)) {
    depthB++;
  }

  // If A is deeper, crawl up.
  while (depthA - depthB > 0) {
    instA = getParent(instA);
    depthA--;
  }

  // If B is deeper, crawl up.
  while (depthB - depthA > 0) {
    instB = getParent(instB);
    depthB--;
  }

  // Walk in lockstep until we find a match.
  var depth = depthA;
  while (depth--) {
    if (instA === instB || instA === instB.alternate) {
      return instA;
    }
    instA = getParent(instA);
    instB = getParent(instB);
  }
  return null;
}

/**
 * Return if A is an ancestor of B.
 */
function isAncestor(instA, instB) {
  while (instB) {
    if (instA === instB || instA === instB.alternate) {
      return true;
    }
    instB = getParent(instB);
  }
  return false;
}

/**
 * Return the parent instance of the passed-in instance.
 */
function getParentInstance(inst) {
  return getParent(inst);
}

/**
 * Simulates the traversal of a two-phase, capture/bubble event dispatch.
 */
function traverseTwoPhase(inst, fn, arg) {
  var path = [];
  while (inst) {
    path.push(inst);
    inst = getParent(inst);
  }
  var i;
  for (i = path.length; i-- > 0;) {
    fn(path[i], 'captured', arg);
  }
  for (i = 0; i < path.length; i++) {
    fn(path[i], 'bubbled', arg);
  }
}

/**
 * Traverses the ID hierarchy and invokes the supplied `cb` on any IDs that
 * should would receive a `mouseEnter` or `mouseLeave` event.
 *
 * Does not invoke the callback on the nearest common ancestor because nothing
 * "entered" or "left" that element.
 */
function traverseEnterLeave(from, to, fn, argFrom, argTo) {
  var common = from && to ? getLowestCommonAncestor(from, to) : null;
  var pathFrom = [];
  while (from && from !== common) {
    pathFrom.push(from);
    from = getParent(from);
  }
  var pathTo = [];
  while (to && to !== common) {
    pathTo.push(to);
    to = getParent(to);
  }
  var i;
  for (i = 0; i < pathFrom.length; i++) {
    fn(pathFrom[i], 'bubbled', argFrom);
  }
  for (i = pathTo.length; i-- > 0;) {
    fn(pathTo[i], 'captured', argTo);
  }
}

var ReactTreeTraversal = {
  isAncestor: isAncestor,
  getLowestCommonAncestor: getLowestCommonAncestor,
  getParentInstance: getParentInstance,
  traverseTwoPhase: traverseTwoPhase,
  traverseEnterLeave: traverseEnterLeave
};

var getListener = EventPluginHub_1.getListener;

{
  var warning$2 = warning_1;
}

/**
 * Some event types have a notion of different registration names for different
 * "phases" of propagation. This finds listeners by a given phase.
 */
function listenerAtPhase(inst, event, propagationPhase) {
  var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase];
  return getListener(inst, registrationName);
}

/**
 * Tags a `SyntheticEvent` with dispatched listeners. Creating this function
 * here, allows us to not have to bind or create functions for each event.
 * Mutating the event's members allows us to not have to create a wrapping
 * "dispatch" object that pairs the event with the listener.
 */
function accumulateDirectionalDispatches(inst, phase, event) {
  {
    warning$2(inst, 'Dispatching inst must not be null');
  }
  var listener = listenerAtPhase(inst, event, phase);
  if (listener) {
    event._dispatchListeners = accumulateInto_1(event._dispatchListeners, listener);
    event._dispatchInstances = accumulateInto_1(event._dispatchInstances, inst);
  }
}

/**
 * Collect dispatches (must be entirely collected before dispatching - see unit
 * tests). Lazily allocate the array to conserve memory.  We must loop through
 * each event and perform the traversal for each one. We cannot perform a
 * single traversal for the entire collection of events because each event may
 * have a different target.
 */
function accumulateTwoPhaseDispatchesSingle(event) {
  if (event && event.dispatchConfig.phasedRegistrationNames) {
    ReactTreeTraversal.traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event);
  }
}

/**
 * Same as `accumulateTwoPhaseDispatchesSingle`, but skips over the targetID.
 */
function accumulateTwoPhaseDispatchesSingleSkipTarget(event) {
  if (event && event.dispatchConfig.phasedRegistrationNames) {
    var targetInst = event._targetInst;
    var parentInst = targetInst ? ReactTreeTraversal.getParentInstance(targetInst) : null;
    ReactTreeTraversal.traverseTwoPhase(parentInst, accumulateDirectionalDispatches, event);
  }
}

/**
 * Accumulates without regard to direction, does not look for phased
 * registration names. Same as `accumulateDirectDispatchesSingle` but without
 * requiring that the `dispatchMarker` be the same as the dispatched ID.
 */
function accumulateDispatches(inst, ignoredDirection, event) {
  if (inst && event && event.dispatchConfig.registrationName) {
    var registrationName = event.dispatchConfig.registrationName;
    var listener = getListener(inst, registrationName);
    if (listener) {
      event._dispatchListeners = accumulateInto_1(event._dispatchListeners, listener);
      event._dispatchInstances = accumulateInto_1(event._dispatchInstances, inst);
    }
  }
}

/**
 * Accumulates dispatches on an `SyntheticEvent`, but only for the
 * `dispatchMarker`.
 * @param {SyntheticEvent} event
 */
function accumulateDirectDispatchesSingle(event) {
  if (event && event.dispatchConfig.registrationName) {
    accumulateDispatches(event._targetInst, null, event);
  }
}

function accumulateTwoPhaseDispatches(events) {
  forEachAccumulated_1(events, accumulateTwoPhaseDispatchesSingle);
}

function accumulateTwoPhaseDispatchesSkipTarget(events) {
  forEachAccumulated_1(events, accumulateTwoPhaseDispatchesSingleSkipTarget);
}

function accumulateEnterLeaveDispatches(leave, enter, from, to) {
  ReactTreeTraversal.traverseEnterLeave(from, to, accumulateDispatches, leave, enter);
}

function accumulateDirectDispatches(events) {
  forEachAccumulated_1(events, accumulateDirectDispatchesSingle);
}

/**
 * A small set of propagation patterns, each of which will accept a small amount
 * of information, and generate a set of "dispatch ready event objects" - which
 * are sets of events that have already been annotated with a set of dispatched
 * listener functions/ids. The API is designed this way to discourage these
 * propagation strategies from actually executing the dispatches, since we
 * always want to collect the entire set of dispatches before executing even a
 * single one.
 *
 * @constructor EventPropagators
 */
var EventPropagators = {
  accumulateTwoPhaseDispatches: accumulateTwoPhaseDispatches,
  accumulateTwoPhaseDispatchesSkipTarget: accumulateTwoPhaseDispatchesSkipTarget,
  accumulateDirectDispatches: accumulateDirectDispatches,
  accumulateEnterLeaveDispatches: accumulateEnterLeaveDispatches
};

var EventPropagators_1 = EventPropagators;

/*
object-assign
(c) Sindre Sorhus
@license MIT
*/

/* eslint-disable no-unused-vars */
var getOwnPropertySymbols = Object.getOwnPropertySymbols;
var hasOwnProperty = Object.prototype.hasOwnProperty;
var propIsEnumerable = Object.prototype.propertyIsEnumerable;

function toObject(val) {
	if (val === null || val === undefined) {
		throw new TypeError('Object.assign cannot be called with null or undefined');
	}

	return Object(val);
}

function shouldUseNative() {
	try {
		if (!Object.assign) {
			return false;
		}

		// Detect buggy property enumeration order in older V8 versions.

		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
		var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
		test1[5] = 'de';
		if (Object.getOwnPropertyNames(test1)[0] === '5') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test2 = {};
		for (var i = 0; i < 10; i++) {
			test2['_' + String.fromCharCode(i)] = i;
		}
		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
			return test2[n];
		});
		if (order2.join('') !== '0123456789') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test3 = {};
		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
			test3[letter] = letter;
		});
		if (Object.keys(Object.assign({}, test3)).join('') !==
				'abcdefghijklmnopqrst') {
			return false;
		}

		return true;
	} catch (err) {
		// We don't expect any of the above to throw, but better to be safe.
		return false;
	}
}

var index = shouldUseNative() ? Object.assign : function (target, source) {
	var from;
	var to = toObject(target);
	var symbols;

	for (var s = 1; s < arguments.length; s++) {
		from = Object(arguments[s]);

		for (var key in from) {
			if (hasOwnProperty.call(from, key)) {
				to[key] = from[key];
			}
		}

		if (getOwnPropertySymbols) {
			symbols = getOwnPropertySymbols(from);
			for (var i = 0; i < symbols.length; i++) {
				if (propIsEnumerable.call(from, symbols[i])) {
					to[symbols[i]] = from[symbols[i]];
				}
			}
		}
	}

	return to;
};

var didWarnForAddedNewProperty = false;
var isProxySupported = typeof Proxy === 'function';
var EVENT_POOL_SIZE = 10;

{
  var warning$3 = warning_1;
}

var shouldBeReleasedProperties = ['dispatchConfig', '_targetInst', 'nativeEvent', 'isDefaultPrevented', 'isPropagationStopped', '_dispatchListeners', '_dispatchInstances'];

/**
 * @interface Event
 * @see http://www.w3.org/TR/DOM-Level-3-Events/
 */
var EventInterface = {
  type: null,
  target: null,
  // currentTarget is set when dispatching; no use in copying it here
  currentTarget: emptyFunction_1.thatReturnsNull,
  eventPhase: null,
  bubbles: null,
  cancelable: null,
  timeStamp: function (event) {
    return event.timeStamp || Date.now();
  },
  defaultPrevented: null,
  isTrusted: null
};

/**
 * Synthetic events are dispatched by event plugins, typically in response to a
 * top-level event delegation handler.
 *
 * These systems should generally use pooling to reduce the frequency of garbage
 * collection. The system should check `isPersistent` to determine whether the
 * event should be released into the pool after being dispatched. Users that
 * need a persisted event should invoke `persist`.
 *
 * Synthetic events (and subclasses) implement the DOM Level 3 Events API by
 * normalizing browser quirks. Subclasses do not necessarily have to implement a
 * DOM interface; custom application-specific events can also subclass this.
 *
 * @param {object} dispatchConfig Configuration used to dispatch this event.
 * @param {*} targetInst Marker identifying the event target.
 * @param {object} nativeEvent Native browser event.
 * @param {DOMEventTarget} nativeEventTarget Target node.
 */
function SyntheticEvent(dispatchConfig, targetInst, nativeEvent, nativeEventTarget) {
  {
    // these have a getter/setter for warnings
    delete this.nativeEvent;
    delete this.preventDefault;
    delete this.stopPropagation;
  }

  this.dispatchConfig = dispatchConfig;
  this._targetInst = targetInst;
  this.nativeEvent = nativeEvent;

  var Interface = this.constructor.Interface;
  for (var propName in Interface) {
    if (!Interface.hasOwnProperty(propName)) {
      continue;
    }
    {
      delete this[propName]; // this has a getter/setter for warnings
    }
    var normalize = Interface[propName];
    if (normalize) {
      this[propName] = normalize(nativeEvent);
    } else {
      if (propName === 'target') {
        this.target = nativeEventTarget;
      } else {
        this[propName] = nativeEvent[propName];
      }
    }
  }

  var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false;
  if (defaultPrevented) {
    this.isDefaultPrevented = emptyFunction_1.thatReturnsTrue;
  } else {
    this.isDefaultPrevented = emptyFunction_1.thatReturnsFalse;
  }
  this.isPropagationStopped = emptyFunction_1.thatReturnsFalse;
  return this;
}

index(SyntheticEvent.prototype, {
  preventDefault: function () {
    this.defaultPrevented = true;
    var event = this.nativeEvent;
    if (!event) {
      return;
    }

    if (event.preventDefault) {
      event.preventDefault();
    } else if (typeof event.returnValue !== 'unknown') {
      event.returnValue = false;
    }
    this.isDefaultPrevented = emptyFunction_1.thatReturnsTrue;
  },

  stopPropagation: function () {
    var event = this.nativeEvent;
    if (!event) {
      return;
    }

    if (event.stopPropagation) {
      event.stopPropagation();
    } else if (typeof event.cancelBubble !== 'unknown') {
      // The ChangeEventPlugin registers a "propertychange" event for
      // IE. This event does not support bubbling or cancelling, and
      // any references to cancelBubble throw "Member not found".  A
      // typeof check of "unknown" circumvents this issue (and is also
      // IE specific).
      event.cancelBubble = true;
    }

    this.isPropagationStopped = emptyFunction_1.thatReturnsTrue;
  },

  /**
   * We release all dispatched `SyntheticEvent`s after each event loop, adding
   * them back into the pool. This allows a way to hold onto a reference that
   * won't be added back into the pool.