import { Component, h } from 'preact';
import { bindActionCreators } from 'redux';

var Children = {
	only: function only(children) {
		return children && children[0] || null;
	}
};

function proptype() {}
proptype.isRequired = proptype;

var PropTypes = {
	element: proptype,
	func: proptype,
	shape: function shape() {
		return proptype;
	},
	instanceOf: function instanceOf() {
		return proptype;
	}
};

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
  return typeof obj;
} : function (obj) {
  return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj;
};





var classCallCheck = function (instance, Constructor) {
  if (!(instance instanceof Constructor)) {
    throw new TypeError("Cannot call a class as a function");
  }
};









var _extends = Object.assign || function (target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = arguments[i];

    for (var key in source) {
      if (Object.prototype.hasOwnProperty.call(source, key)) {
        target[key] = source[key];
      }
    }
  }

  return target;
};

var get = function get(object, property, receiver) {
  if (object === null) object = Function.prototype;
  var desc = Object.getOwnPropertyDescriptor(object, property);

  if (desc === undefined) {
    var parent = Object.getPrototypeOf(object);

    if (parent === null) {
      return undefined;
    } else {
      return get(parent, property, receiver);
    }
  } else if ("value" in desc) {
    return desc.value;
  } else {
    var getter = desc.get;

    if (getter === undefined) {
      return undefined;
    }

    return getter.call(receiver);
  }
};

var inherits = function (subClass, superClass) {
  if (typeof superClass !== "function" && superClass !== null) {
    throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
  }

  subClass.prototype = Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      enumerable: false,
      writable: true,
      configurable: true
    }
  });
  if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
};









var objectWithoutProperties = function (obj, keys) {
  var target = {};

  for (var i in obj) {
    if (keys.indexOf(i) >= 0) continue;
    if (!Object.prototype.hasOwnProperty.call(obj, i)) continue;
    target[i] = obj[i];
  }

  return target;
};

var possibleConstructorReturn = function (self, call) {
  if (!self) {
    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
  }

  return call && (typeof call === "object" || typeof call === "function") ? call : self;
};



var set = function set(object, property, value, receiver) {
  var desc = Object.getOwnPropertyDescriptor(object, property);

  if (desc === undefined) {
    var parent = Object.getPrototypeOf(object);

    if (parent !== null) {
      set(parent, property, value, receiver);
    }
  } else if ("value" in desc && desc.writable) {
    desc.value = value;
  } else {
    var setter = desc.set;

    if (setter !== undefined) {
      setter.call(receiver, value);
    }
  }

  return value;
};

// encapsulates the subscription logic for connecting a component to the redux store, as
// well as nesting subscriptions of descendant components, so that we can ensure the
// ancestor components re-render before descendants

var CLEARED = null;
var nullListeners = {
  notify: function notify() {}
};

function createListenerCollection() {
  // the current/next pattern is copied from redux's createStore code.
  // TODO: refactor+expose that code to be reusable here?
  var current = [];
  var next = [];

  return {
    clear: function clear() {
      next = CLEARED;
      current = CLEARED;
    },
    notify: function notify() {
      var listeners = current = next;
      for (var i = 0; i < listeners.length; i++) {
        listeners[i]();
      }
    },
    subscribe: function subscribe(listener) {
      var isSubscribed = true;
      if (next === current) next = current.slice();
      next.push(listener);

      return function unsubscribe() {
        if (!isSubscribed || current === CLEARED) return;
        isSubscribed = false;

        if (next === current) next = current.slice();
        next.splice(next.indexOf(listener), 1);
      };
    }
  };
}

var Subscription = function () {
  function Subscription(store, parentSub) {
    classCallCheck(this, Subscription);

    this.store = store;
    this.parentSub = parentSub;
    this.unsubscribe = null;
    this.listeners = nullListeners;
  }

  Subscription.prototype.addNestedSub = function addNestedSub(listener) {
    this.trySubscribe();
    return this.listeners.subscribe(listener);
  };

  Subscription.prototype.notifyNestedSubs = function notifyNestedSubs() {
    this.listeners.notify();
  };

  Subscription.prototype.isSubscribed = function isSubscribed() {
    return Boolean(this.unsubscribe);
  };

  Subscription.prototype.trySubscribe = function trySubscribe() {
    if (!this.unsubscribe) {
      // this.onStateChange is set by connectAdvanced.initSubscription()
      this.unsubscribe = this.parentSub ? this.parentSub.addNestedSub(this.onStateChange) : this.store.subscribe(this.onStateChange);

      this.listeners = createListenerCollection();
    }
  };

  Subscription.prototype.tryUnsubscribe = function tryUnsubscribe() {
    if (this.unsubscribe) {
      this.unsubscribe();
      this.unsubscribe = null;
      this.listeners.clear();
      this.listeners = nullListeners;
    }
  };

  return Subscription;
}();

var storeShape = PropTypes.shape({
  subscribe: PropTypes.func.isRequired,
  dispatch: PropTypes.func.isRequired,
  getState: PropTypes.func.isRequired
});

/**
 * Prints a warning in the console if it exists.
 *
 * @param {String} message The warning message.
 * @returns {void}
 */
function warning(message) {
  /* eslint-disable no-console */
  if (typeof console !== 'undefined' && typeof console.error === 'function') {
    console.error(message);
  }
  /* eslint-enable no-console */
  try {
    // This error was thrown as a convenience so that if you enable
    // "break on all exceptions" in your console,
    // it would pause the execution at this line.
    throw new Error(message);
    /* eslint-disable no-empty */
  } catch (e) {}
  /* eslint-enable no-empty */
}

var didWarnAboutReceivingStore = false;
function warnAboutReceivingStore() {
  if (didWarnAboutReceivingStore) {
    return;
  }
  didWarnAboutReceivingStore = true;

  warning('<Provider> does not support changing `store` on the fly. ' + 'It is most likely that you see this error because you updated to ' + 'Redux 2.x and React Redux 2.x which no longer hot reload reducers ' + 'automatically. See https://github.com/reactjs/react-redux/releases/' + 'tag/v2.0.0 for the migration instructions.');
}

var Provider = function (_Component) {
  inherits(Provider, _Component);

  Provider.prototype.getChildContext = function getChildContext() {
    return { store: this.store, storeSubscription: null };
  };

  function Provider(props, context) {
    classCallCheck(this, Provider);

    var _this = possibleConstructorReturn(this, _Component.call(this, props, context));

    _this.store = props.store;
    return _this;
  }

  Provider.prototype.render = function render() {
    return Children.only(this.props.children);
  };

  return Provider;
}(Component);

{
  Provider.prototype.componentWillReceiveProps = function (nextProps) {
    var store = this.store;
    var nextStore = nextProps.store;


    if (store !== nextStore) {
      warnAboutReceivingStore();
    }
  };
}

Provider.childContextTypes = {
  store: storeShape.isRequired,
  storeSubscription: PropTypes.instanceOf(Subscription)
};
Provider.displayName = 'Provider';

/**
 * Copyright 2015, Yahoo! Inc.
 * Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
 */
var REACT_STATICS = {
    childContextTypes: true,
    contextTypes: true,
    defaultProps: true,
    displayName: true,
    getDefaultProps: true,
    mixins: true,
    propTypes: true,
    type: true
};

var KNOWN_STATICS = {
    name: true,
    length: true,
    prototype: true,
    caller: true,
    arguments: true,
    arity: true
};

var isGetOwnPropertySymbolsAvailable = typeof Object.getOwnPropertySymbols === 'function';

var index = function hoistNonReactStatics(targetComponent, sourceComponent, customStatics) {
    if (typeof sourceComponent !== 'string') {
        // don't hoist over string (html) components
        var keys = Object.getOwnPropertyNames(sourceComponent);

        /* istanbul ignore else */
        if (isGetOwnPropertySymbolsAvailable) {
            keys = keys.concat(Object.getOwnPropertySymbols(sourceComponent));
        }

        for (var i = 0; i < keys.length; ++i) {
            if (!REACT_STATICS[keys[i]] && !KNOWN_STATICS[keys[i]] && (!customStatics || !customStatics[keys[i]])) {
                try {
                    targetComponent[keys[i]] = sourceComponent[keys[i]];
                } catch (error) {}
            }
        }
    }

    return targetComponent;
};

var invariant = function () {}

var hotReloadingVersion = 0;
function connectAdvanced(
/*
  selectorFactory is a func that is responsible for returning the selector function used to
  compute new props from state, props, and dispatch. For example:
     export default connectAdvanced((dispatch, options) => (state, props) => ({
      thing: state.things[props.thingId],
      saveThing: fields => dispatch(actionCreators.saveThing(props.thingId, fields)),
    }))(YourComponent)
   Access to dispatch is provided to the factory so selectorFactories can bind actionCreators
  outside of their selector as an optimization. Options passed to connectAdvanced are passed to
  the selectorFactory, along with displayName and WrappedComponent, as the second argument.
   Note that selectorFactory is responsible for all caching/memoization of inbound and outbound
  props. Do not use connectAdvanced directly without memoizing results between calls to your
  selector, otherwise the Connect component will re-render on every state or props change.
*/
selectorFactory) {
  var _contextTypes, _childContextTypes;

  var _ref = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];

  var _ref$getDisplayName = _ref.getDisplayName;
  var getDisplayName = _ref$getDisplayName === undefined ? function (name) {
    return 'ConnectAdvanced(' + name + ')';
  } : _ref$getDisplayName;
  var _ref$methodName = _ref.methodName;
  var methodName = _ref$methodName === undefined ? 'connectAdvanced' : _ref$methodName;
  var _ref$renderCountProp = _ref.renderCountProp;
  var renderCountProp = _ref$renderCountProp === undefined ? undefined : _ref$renderCountProp;
  var _ref$shouldHandleStat = _ref.shouldHandleStateChanges;
  var shouldHandleStateChanges = _ref$shouldHandleStat === undefined ? true : _ref$shouldHandleStat;
  var _ref$storeKey = _ref.storeKey;
  var storeKey = _ref$storeKey === undefined ? 'store' : _ref$storeKey;
  var _ref$withRef = _ref.withRef;
  var withRef = _ref$withRef === undefined ? false : _ref$withRef;
  var connectOptions = objectWithoutProperties(_ref, ['getDisplayName', 'methodName', 'renderCountProp', 'shouldHandleStateChanges', 'storeKey', 'withRef']);

  var subscriptionKey = storeKey + 'Subscription';
  var version = hotReloadingVersion++;

  var contextTypes = (_contextTypes = {}, _contextTypes[storeKey] = storeShape, _contextTypes[subscriptionKey] = PropTypes.instanceOf(Subscription), _contextTypes);
  var childContextTypes = (_childContextTypes = {}, _childContextTypes[subscriptionKey] = PropTypes.instanceOf(Subscription), _childContextTypes);

  return function wrapWithConnect(WrappedComponent) {
    invariant(typeof WrappedComponent == 'function', 'You must pass a component to the function returned by ' + ('connect. Instead received ' + WrappedComponent));

    var wrappedComponentName = WrappedComponent.displayName || WrappedComponent.name || 'Component';

    var displayName = getDisplayName(wrappedComponentName);

    var selectorFactoryOptions = _extends({}, connectOptions, {
      getDisplayName: getDisplayName,
      methodName: methodName,
      renderCountProp: renderCountProp,
      shouldHandleStateChanges: shouldHandleStateChanges,
      storeKey: storeKey,
      withRef: withRef,
      displayName: displayName,
      wrappedComponentName: wrappedComponentName,
      WrappedComponent: WrappedComponent
    });

    var Connect = function (_Component) {
      inherits(Connect, _Component);

      function Connect(props, context) {
        classCallCheck(this, Connect);

        var _this = possibleConstructorReturn(this, _Component.call(this, props, context));

        _this.version = version;
        _this.state = {};
        _this.renderCount = 0;
        _this.store = _this.props[storeKey] || _this.context[storeKey];
        _this.parentSub = props[subscriptionKey] || context[subscriptionKey];

        _this.setWrappedInstance = _this.setWrappedInstance.bind(_this);

        invariant(_this.store, 'Could not find "' + storeKey + '" in either the context or ' + ('props of "' + displayName + '". ') + 'Either wrap the root component in a <Provider>, ' + ('or explicitly pass "' + storeKey + '" as a prop to "' + displayName + '".'));

        // make sure `getState` is properly bound in order to avoid breaking
        // custom store implementations that rely on the store's context
        _this.getState = _this.store.getState.bind(_this.store);

        _this.initSelector();
        _this.initSubscription();
        return _this;
      }

      Connect.prototype.getChildContext = function getChildContext() {
        var _ref2;

        return _ref2 = {}, _ref2[subscriptionKey] = this.subscription || this.parentSub, _ref2;
      };

      Connect.prototype.componentDidMount = function componentDidMount() {
        if (!shouldHandleStateChanges) return;

        // componentWillMount fires during server side rendering, but componentDidMount and
        // componentWillUnmount do not. Because of this, trySubscribe happens during ...didMount.
        // Otherwise, unsubscription would never take place during SSR, causing a memory leak.
        // To handle the case where a child component may have triggered a state change by
        // dispatching an action in its componentWillMount, we have to re-run the select and maybe
        // re-render.
        this.subscription.trySubscribe();
        this.selector.run(this.props);
        if (this.selector.shouldComponentUpdate) this.forceUpdate();
      };

      Connect.prototype.componentWillReceiveProps = function componentWillReceiveProps(nextProps) {
        this.selector.run(nextProps);
      };

      Connect.prototype.shouldComponentUpdate = function shouldComponentUpdate() {
        return this.selector.shouldComponentUpdate;
      };

      Connect.prototype.componentWillUnmount = function componentWillUnmount() {
        if (this.subscription) this.subscription.tryUnsubscribe();
        // these are just to guard against extra memory leakage if a parent element doesn't
        // dereference this instance properly, such as an async callback that never finishes
        this.subscription = null;
        this.store = null;
        this.parentSub = null;
        this.selector.run = function () {};
      };

      Connect.prototype.getWrappedInstance = function getWrappedInstance() {
        invariant(withRef, 'To access the wrapped instance, you need to specify ' + ('{ withRef: true } in the options argument of the ' + methodName + '() call.'));
        return this.wrappedInstance;
      };

      Connect.prototype.setWrappedInstance = function setWrappedInstance(ref) {
        this.wrappedInstance = ref;
      };

      Connect.prototype.initSelector = function initSelector() {
        var dispatch = this.store.dispatch;
        var getState = this.getState;

        var sourceSelector = selectorFactory(dispatch, selectorFactoryOptions);

        // wrap the selector in an object that tracks its results between runs
        var selector = this.selector = {
          shouldComponentUpdate: true,
          props: sourceSelector(getState(), this.props),
          run: function runComponentSelector(props) {
            try {
              var nextProps = sourceSelector(getState(), props);
              if (selector.error || nextProps !== selector.props) {
                selector.shouldComponentUpdate = true;
                selector.props = nextProps;
                selector.error = null;
              }
            } catch (error) {
              selector.shouldComponentUpdate = true;
              selector.error = error;
            }
          }
        };
      };

      Connect.prototype.initSubscription = function initSubscription() {
        var _this2 = this;

        if (shouldHandleStateChanges) {
          (function () {
            var subscription = _this2.subscription = new Subscription(_this2.store, _this2.parentSub);
            var dummyState = {};

            subscription.onStateChange = function onStateChange() {
              this.selector.run(this.props);

              if (!this.selector.shouldComponentUpdate) {
                subscription.notifyNestedSubs();
              } else {
                this.componentDidUpdate = function componentDidUpdate() {
                  this.componentDidUpdate = undefined;
                  subscription.notifyNestedSubs();
                };

                this.setState(dummyState);
              }
            }.bind(_this2);
          })();
        }
      };

      Connect.prototype.isSubscribed = function isSubscribed() {
        return Boolean(this.subscription) && this.subscription.isSubscribed();
      };

      Connect.prototype.addExtraProps = function addExtraProps(props) {
        if (!withRef && !renderCountProp) return props;
        // make a shallow copy so that fields added don't leak to the original selector.
        // this is especially important for 'ref' since that's a reference back to the component
        // instance. a singleton memoized selector would then be holding a reference to the
        // instance, preventing the instance from being garbage collected, and that would be bad
        var withExtras = _extends({}, props);
        if (withRef) withExtras.ref = this.setWrappedInstance;
        if (renderCountProp) withExtras[renderCountProp] = this.renderCount++;
        return withExtras;
      };

      Connect.prototype.render = function render() {
        var selector = this.selector;
        selector.shouldComponentUpdate = false;

        if (selector.error) {
          throw selector.error;
        } else {
          return h(WrappedComponent, this.addExtraProps(selector.props));
        }
      };

      return Connect;
    }(Component);

    Connect.WrappedComponent = WrappedComponent;
    Connect.displayName = displayName;
    Connect.childContextTypes = childContextTypes;
    Connect.contextTypes = contextTypes;


    {
      Connect.prototype.componentWillUpdate = function componentWillUpdate() {
        // We are hot reloading!
        if (this.version !== version) {
          this.version = version;
          this.initSelector();

          if (this.subscription) this.subscription.tryUnsubscribe();
          this.initSubscription();
          if (shouldHandleStateChanges) this.subscription.trySubscribe();
        }
      };
    }

    return index(Connect, WrappedComponent);
  };
}

var hasOwn = Object.prototype.hasOwnProperty;

function shallowEqual(a, b) {
  if (a === b) return true;

  var countA = 0;
  var countB = 0;

  for (var key in a) {
    if (hasOwn.call(a, key) && a[key] !== b[key]) return false;
    countA++;
  }

  for (var _key in b) {
    if (hasOwn.call(b, _key)) countB++;
  }

  return countA === countB;
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeGetPrototype = Object.getPrototypeOf;

/**
 * Gets the `[[Prototype]]` of `value`.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {null|Object} Returns the `[[Prototype]]`.
 */
function getPrototype(value) {
  return nativeGetPrototype(Object(value));
}

/**
 * Checks if `value` is a host object in IE < 9.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a host object, else `false`.
 */
function isHostObject(value) {
  // Many host objects are `Object` objects that can coerce to strings
  // despite having improperly defined `toString` methods.
  var result = false;
  if (value != null && typeof value.toString != 'function') {
    try {
      result = !!(value + '');
    } catch (e) {}
  }
  return result;
}

/**
 * Checks if `value` is object-like. A value is object-like if it's not `null`
 * and has a `typeof` result of "object".
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
 * @example
 *
 * _.isObjectLike({});
 * // => true
 *
 * _.isObjectLike([1, 2, 3]);
 * // => true
 *
 * _.isObjectLike(_.noop);
 * // => false
 *
 * _.isObjectLike(null);
 * // => false
 */
function isObjectLike(value) {
  return !!value && (typeof value === 'undefined' ? 'undefined' : _typeof(value)) == 'object';
}

/** `Object#toString` result references. */
var objectTag = '[object Object]';

/** Used for built-in method references. */
var objectProto = Object.prototype;

/** Used to resolve the decompiled source of functions. */
var funcToString = Function.prototype.toString;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/** Used to infer the `Object` constructor. */
var objectCtorString = funcToString.call(Object);

/**
 * Used to resolve the
 * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
 * of values.
 */
var objectToString = objectProto.toString;

/**
 * Checks if `value` is a plain object, that is, an object created by the
 * `Object` constructor or one with a `[[Prototype]]` of `null`.
 *
 * @static
 * @memberOf _
 * @since 0.8.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a plain object,
 *  else `false`.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 * }
 *
 * _.isPlainObject(new Foo);
 * // => false
 *
 * _.isPlainObject([1, 2, 3]);
 * // => false
 *
 * _.isPlainObject({ 'x': 0, 'y': 0 });
 * // => true
 *
 * _.isPlainObject(Object.create(null));
 * // => true
 */
function isPlainObject(value) {
  if (!isObjectLike(value) || objectToString.call(value) != objectTag || isHostObject(value)) {
    return false;
  }
  var proto = getPrototype(value);
  if (proto === null) {
    return true;
  }
  var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
  return typeof Ctor == 'function' && Ctor instanceof Ctor && funcToString.call(Ctor) == objectCtorString;
}

function verifyPlainObject(value, displayName, methodName) {
  if (!isPlainObject(value)) {
    warning(methodName + '() in ' + displayName + ' must return a plain object. Instead received ' + value + '.');
  }
}

function wrapMapToPropsConstant(getConstant) {
  return function initConstantSelector(dispatch, options) {
    var constant = getConstant(dispatch, options);

    function constantSelector() {
      return constant;
    }
    constantSelector.dependsOnOwnProps = false;
    return constantSelector;
  };
}

// dependsOnOwnProps is used by createMapToPropsProxy to determine whether to pass props as args
// to the mapToProps function being wrapped. It is also used by makePurePropsSelector to determine
// whether mapToProps needs to be invoked when props have changed.
// 
// A length of one signals that mapToProps does not depend on props from the parent component.
// A length of zero is assumed to mean mapToProps is getting args via arguments or ...args and
// therefore not reporting its length accurately..
function getDependsOnOwnProps(mapToProps) {
  return mapToProps.dependsOnOwnProps !== null && mapToProps.dependsOnOwnProps !== undefined ? Boolean(mapToProps.dependsOnOwnProps) : mapToProps.length !== 1;
}

// Used by whenMapStateToPropsIsFunction and whenMapDispatchToPropsIsFunction,
// this function wraps mapToProps in a proxy function which does several things:
// 
//  * Detects whether the mapToProps function being called depends on props, which
//    is used by selectorFactory to decide if it should reinvoke on props changes.
//    
//  * On first call, handles mapToProps if returns another function, and treats that
//    new function as the true mapToProps for subsequent calls.
//    
//  * On first call, verifies the first result is a plain object, in order to warn
//    the developer that their mapToProps function is not returning a valid result.
//    
function wrapMapToPropsFunc(mapToProps, methodName) {
  return function initProxySelector(dispatch, _ref) {
    var displayName = _ref.displayName;

    var proxy = function mapToPropsProxy(stateOrDispatch, ownProps) {
      return proxy.dependsOnOwnProps ? proxy.mapToProps(stateOrDispatch, ownProps) : proxy.mapToProps(stateOrDispatch);
    };

    proxy.dependsOnOwnProps = getDependsOnOwnProps(mapToProps);

    proxy.mapToProps = function detectFactoryAndVerify(stateOrDispatch, ownProps) {
      proxy.mapToProps = mapToProps;
      var props = proxy(stateOrDispatch, ownProps);

      if (typeof props === 'function') {
        proxy.mapToProps = props;
        proxy.dependsOnOwnProps = getDependsOnOwnProps(props);
        props = proxy(stateOrDispatch, ownProps);
      }

      verifyPlainObject(props, displayName, methodName);

      return props;
    };

    return proxy;
  };
}

function whenMapDispatchToPropsIsFunction(mapDispatchToProps) {
  return typeof mapDispatchToProps === 'function' ? wrapMapToPropsFunc(mapDispatchToProps, 'mapDispatchToProps') : undefined;
}

function whenMapDispatchToPropsIsMissing(mapDispatchToProps) {
  return !mapDispatchToProps ? wrapMapToPropsConstant(function (dispatch) {
    return { dispatch: dispatch };
  }) : undefined;
}

function whenMapDispatchToPropsIsObject(mapDispatchToProps) {
  return mapDispatchToProps && (typeof mapDispatchToProps === 'undefined' ? 'undefined' : _typeof(mapDispatchToProps)) === 'object' ? wrapMapToPropsConstant(function (dispatch) {
    return bindActionCreators(mapDispatchToProps, dispatch);
  }) : undefined;
}

var defaultMapDispatchToPropsFactories = [whenMapDispatchToPropsIsFunction, whenMapDispatchToPropsIsMissing, whenMapDispatchToPropsIsObject];

function whenMapStateToPropsIsFunction(mapStateToProps) {
  return typeof mapStateToProps === 'function' ? wrapMapToPropsFunc(mapStateToProps, 'mapStateToProps') : undefined;
}

function whenMapStateToPropsIsMissing(mapStateToProps) {
  return !mapStateToProps ? wrapMapToPropsConstant(function () {
    return {};
  }) : undefined;
}

var defaultMapStateToPropsFactories = [whenMapStateToPropsIsFunction, whenMapStateToPropsIsMissing];

function defaultMergeProps(stateProps, dispatchProps, ownProps) {
  return _extends({}, ownProps, stateProps, dispatchProps);
}

function wrapMergePropsFunc(mergeProps) {
  return function initMergePropsProxy(dispatch, _ref) {
    var displayName = _ref.displayName;
    var pure = _ref.pure;
    var areMergedPropsEqual = _ref.areMergedPropsEqual;

    var hasRunOnce = false;
    var mergedProps = void 0;

    return function mergePropsProxy(stateProps, dispatchProps, ownProps) {
      var nextMergedProps = mergeProps(stateProps, dispatchProps, ownProps);

      if (hasRunOnce) {
        if (!pure || !areMergedPropsEqual(nextMergedProps, mergedProps)) mergedProps = nextMergedProps;
      } else {
        hasRunOnce = true;
        mergedProps = nextMergedProps;

        verifyPlainObject(mergedProps, displayName, 'mergeProps');
      }

      return mergedProps;
    };
  };
}

function whenMergePropsIsFunction(mergeProps) {
  return typeof mergeProps === 'function' ? wrapMergePropsFunc(mergeProps) : undefined;
}

function whenMergePropsIsOmitted(mergeProps) {
  return !mergeProps ? function () {
    return defaultMergeProps;
  } : undefined;
}

var defaultMergePropsFactories = [whenMergePropsIsFunction, whenMergePropsIsOmitted];

function verify(selector, methodName, displayName) {
  if (!selector) {
    throw new Error('Unexpected value for ' + methodName + ' in ' + displayName + '.');
  } else if (methodName === 'mapStateToProps' || methodName === 'mapDispatchToProps') {
    if (!selector.hasOwnProperty('dependsOnOwnProps')) {
      warning('The selector for ' + methodName + ' of ' + displayName + ' did not specify a value for dependsOnOwnProps.');
    }
  }
}

function verifySubselectors(mapStateToProps, mapDispatchToProps, mergeProps, displayName) {
  verify(mapStateToProps, 'mapStateToProps', displayName);
  verify(mapDispatchToProps, 'mapDispatchToProps', displayName);
  verify(mergeProps, 'mergeProps', displayName);
}

function impureFinalPropsSelectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch) {
  return function impureFinalPropsSelector(state, ownProps) {
    return mergeProps(mapStateToProps(state, ownProps), mapDispatchToProps(dispatch, ownProps), ownProps);
  };
}

function pureFinalPropsSelectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch, _ref) {
  var areStatesEqual = _ref.areStatesEqual;
  var areOwnPropsEqual = _ref.areOwnPropsEqual;
  var areStatePropsEqual = _ref.areStatePropsEqual;

  var hasRunAtLeastOnce = false;
  var state = void 0;
  var ownProps = void 0;
  var stateProps = void 0;
  var dispatchProps = void 0;
  var mergedProps = void 0;

  function handleFirstCall(firstState, firstOwnProps) {
    state = firstState;
    ownProps = firstOwnProps;
    stateProps = mapStateToProps(state, ownProps);
    dispatchProps = mapDispatchToProps(dispatch, ownProps);
    mergedProps = mergeProps(stateProps, dispatchProps, ownProps);
    hasRunAtLeastOnce = true;
    return mergedProps;
  }

  function handleNewPropsAndNewState() {
    stateProps = mapStateToProps(state, ownProps);

    if (mapDispatchToProps.dependsOnOwnProps) dispatchProps = mapDispatchToProps(dispatch, ownProps);

    mergedProps = mergeProps(stateProps, dispatchProps, ownProps);
    return mergedProps;
  }

  function handleNewProps() {
    if (mapStateToProps.dependsOnOwnProps) stateProps = mapStateToProps(state, ownProps);

    if (mapDispatchToProps.dependsOnOwnProps) dispatchProps = mapDispatchToProps(dispatch, ownProps);

    mergedProps = mergeProps(stateProps, dispatchProps, ownProps);
    return mergedProps;
  }

  function handleNewState() {
    var nextStateProps = mapStateToProps(state, ownProps);
    var statePropsChanged = !areStatePropsEqual(nextStateProps, stateProps);
    stateProps = nextStateProps;

    if (statePropsChanged) mergedProps = mergeProps(stateProps, dispatchProps, ownProps);

    return mergedProps;
  }

  function handleSubsequentCalls(nextState, nextOwnProps) {
    var propsChanged = !areOwnPropsEqual(nextOwnProps, ownProps);
    var stateChanged = !areStatesEqual(nextState, state);
    state = nextState;
    ownProps = nextOwnProps;

    if (propsChanged && stateChanged) return handleNewPropsAndNewState();
    if (propsChanged) return handleNewProps();
    if (stateChanged) return handleNewState();
    return mergedProps;
  }

  return function pureFinalPropsSelector(nextState, nextOwnProps) {
    return hasRunAtLeastOnce ? handleSubsequentCalls(nextState, nextOwnProps) : handleFirstCall(nextState, nextOwnProps);
  };
}

// TODO: Add more comments

// If pure is true, the selector returned by selectorFactory will memoize its results,
// allowing connectAdvanced's shouldComponentUpdate to return false if final
// props have not changed. If false, the selector will always return a new
// object and shouldComponentUpdate will always return true.

function finalPropsSelectorFactory(dispatch, _ref2) {
  var initMapStateToProps = _ref2.initMapStateToProps;
  var initMapDispatchToProps = _ref2.initMapDispatchToProps;
  var initMergeProps = _ref2.initMergeProps;
  var options = objectWithoutProperties(_ref2, ['initMapStateToProps', 'initMapDispatchToProps', 'initMergeProps']);

  var mapStateToProps = initMapStateToProps(dispatch, options);
  var mapDispatchToProps = initMapDispatchToProps(dispatch, options);
  var mergeProps = initMergeProps(dispatch, options);

  {
    verifySubselectors(mapStateToProps, mapDispatchToProps, mergeProps, options.displayName);
  }

  var selectorFactory = options.pure ? pureFinalPropsSelectorFactory : impureFinalPropsSelectorFactory;

  return selectorFactory(mapStateToProps, mapDispatchToProps, mergeProps, dispatch, options);
}

/*
  connect is a facade over connectAdvanced. It turns its args into a compatible
  selectorFactory, which has the signature:

    (dispatch, options) => (nextState, nextOwnProps) => nextFinalProps
  
  connect passes its args to connectAdvanced as options, which will in turn pass them to
  selectorFactory each time a Connect component instance is instantiated or hot reloaded.

  selectorFactory returns a final props selector from its mapStateToProps,
  mapStateToPropsFactories, mapDispatchToProps, mapDispatchToPropsFactories, mergeProps,
  mergePropsFactories, and pure args.

  The resulting final props selector is called by the Connect component instance whenever
  it receives new props or store state.
 */

function match(arg, factories, name) {
  for (var i = factories.length - 1; i >= 0; i--) {
    var result = factories[i](arg);
    if (result) return result;
  }

  return function (dispatch, options) {
    throw new Error('Invalid value of type ' + (typeof arg === 'undefined' ? 'undefined' : _typeof(arg)) + ' for ' + name + ' argument when connecting component ' + options.wrappedComponentName + '.');
  };
}

function strictEqual(a, b) {
  return a === b;
}

// createConnect with default args builds the 'official' connect behavior. Calling it with
// different options opens up some testing and extensibility scenarios
function createConnect() {
  var _ref = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];

  var _ref$connectHOC = _ref.connectHOC;
  var connectHOC = _ref$connectHOC === undefined ? connectAdvanced : _ref$connectHOC;
  var _ref$mapStateToPropsF = _ref.mapStateToPropsFactories;
  var mapStateToPropsFactories = _ref$mapStateToPropsF === undefined ? defaultMapStateToPropsFactories : _ref$mapStateToPropsF;
  var _ref$mapDispatchToPro = _ref.mapDispatchToPropsFactories;
  var mapDispatchToPropsFactories = _ref$mapDispatchToPro === undefined ? defaultMapDispatchToPropsFactories : _ref$mapDispatchToPro;
  var _ref$mergePropsFactor = _ref.mergePropsFactories;
  var mergePropsFactories = _ref$mergePropsFactor === undefined ? defaultMergePropsFactories : _ref$mergePropsFactor;
  var _ref$selectorFactory = _ref.selectorFactory;
  var selectorFactory = _ref$selectorFactory === undefined ? finalPropsSelectorFactory : _ref$selectorFactory;

  return function connect(mapStateToProps, mapDispatchToProps, mergeProps) {
    var _ref2 = arguments.length <= 3 || arguments[3] === undefined ? {} : arguments[3];

    var _ref2$pure = _ref2.pure;
    var pure = _ref2$pure === undefined ? true : _ref2$pure;
    var _ref2$areStatesEqual = _ref2.areStatesEqual;
    var areStatesEqual = _ref2$areStatesEqual === undefined ? strictEqual : _ref2$areStatesEqual;
    var _ref2$areOwnPropsEqua = _ref2.areOwnPropsEqual;
    var areOwnPropsEqual = _ref2$areOwnPropsEqua === undefined ? shallowEqual : _ref2$areOwnPropsEqua;
    var _ref2$areStatePropsEq = _ref2.areStatePropsEqual;
    var areStatePropsEqual = _ref2$areStatePropsEq === undefined ? shallowEqual : _ref2$areStatePropsEq;
    var _ref2$areMergedPropsE = _ref2.areMergedPropsEqual;
    var areMergedPropsEqual = _ref2$areMergedPropsE === undefined ? shallowEqual : _ref2$areMergedPropsE;
    var extraOptions = objectWithoutProperties(_ref2, ['pure', 'areStatesEqual', 'areOwnPropsEqual', 'areStatePropsEqual', 'areMergedPropsEqual']);

    var initMapStateToProps = match(mapStateToProps, mapStateToPropsFactories, 'mapStateToProps');
    var initMapDispatchToProps = match(mapDispatchToProps, mapDispatchToPropsFactories, 'mapDispatchToProps');
    var initMergeProps = match(mergeProps, mergePropsFactories, 'mergeProps');

    return connectHOC(selectorFactory, _extends({
      // used in error messages
      methodName: 'connect',

      // used to compute Connect's displayName from the wrapped component's displayName.
      getDisplayName: function getDisplayName(name) {
        return 'Connect(' + name + ')';
      },

      // if mapStateToProps is falsy, the Connect component doesn't subscribe to store state changes
      shouldHandleStateChanges: Boolean(mapStateToProps),

      // passed through to selectorFactory
      initMapStateToProps: initMapStateToProps,
      initMapDispatchToProps: initMapDispatchToProps,
      initMergeProps: initMergeProps,
      pure: pure,
      areStatesEqual: areStatesEqual,
      areOwnPropsEqual: areOwnPropsEqual,
      areStatePropsEqual: areStatePropsEqual,
      areMergedPropsEqual: areMergedPropsEqual

    }, extraOptions));
  };
}

var connect$1 = createConnect();



var lib$1 = {
	Provider: Provider,
	connect: connect$1,
	connectAdvanced: connectAdvanced
};

export default lib$1;
//# sourceMappingURL=preact-redux.esm.js.map