tor-browser

react-router-dom.js (126491B)

---

(function (global, factory) {
 typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require("resource://devtools/client/shared/vendor/react.mjs")) :
 typeof define === 'function' && define.amd ? define(['exports', 'react'], factory) :
 (factory((global.ReactRouterDOM = {}),global.React));
}(this, (function (exports,React) { 'use strict';

 React = React && React.hasOwnProperty('default') ? React['default'] : React;

 /**
  * Copyright (c) 2014-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 warning
  */

 var warning = function () {};

 {
   var printWarning = function printWarning(format, args) {
     var len = arguments.length;
     args = new Array(len > 2 ? len - 2 : 0);
     for (var key = 2; key < len; key++) {
       args[key - 2] = 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 = function (condition, format, args) {
     var len = arguments.length;
     args = new Array(len > 2 ? len - 2 : 0);
     for (var key = 2; key < len; key++) {
       args[key - 2] = arguments[key];
     }
     if (format === undefined) {
       throw new Error('`warning(condition, format, ...args)` requires a warning ' + 'message argument');
     }
     if (!condition) {
       printWarning.apply(null, [format].concat(args));
     }
   };
 }

 var warning_1 = warning;

 var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};

 function createCommonjsModule(fn, module) {
 	return module = { exports: {} }, fn(module, module.exports), module.exports;
 }

 /**
  * 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;

 /**
  * 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;

 /**
  * 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$1 = 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$1.apply(undefined, [format].concat(args));
     }
   };
 }

 var warning_1$1 = warning$1;

 /*
 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 objectAssign = 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;
 };

 /**
  * 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.
  */

 var ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';

 var ReactPropTypesSecret_1 = ReactPropTypesSecret;

 {
   var invariant$1 = invariant_1;
   var warning$2 = warning_1$1;
   var ReactPropTypesSecret$1 = ReactPropTypesSecret_1;
   var loggedTypeFailures = {};
 }

 /**
  * Assert that the values match with the type specs.
  * Error messages are memorized and will only be shown once.
  *
  * @param {object} typeSpecs Map of name to a ReactPropType
  * @param {object} values Runtime values that need to be type-checked
  * @param {string} location e.g. "prop", "context", "child context"
  * @param {string} componentName Name of the component for error messages.
  * @param {?Function} getStack Returns the component stack.
  * @private
  */
 function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
   {
     for (var typeSpecName in typeSpecs) {
       if (typeSpecs.hasOwnProperty(typeSpecName)) {
         var error;
         // Prop type validation may throw. In case they do, we don't want to
         // fail the render phase where it didn't fail before. So we log it.
         // After these have been cleaned up, we'll let them throw.
         try {
           // This is intentionally an invariant that gets caught. It's the same
           // behavior as without this statement except with a better message.
           invariant$1(typeof typeSpecs[typeSpecName] === 'function', '%s: %s type `%s` is invalid; it must be a function, usually from ' + 'the `prop-types` package, but received `%s`.', componentName || 'React class', location, typeSpecName, typeof typeSpecs[typeSpecName]);
           error = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, ReactPropTypesSecret$1);
         } catch (ex) {
           error = ex;
         }
         warning$2(!error || error instanceof Error, '%s: type specification of %s `%s` is invalid; the type checker ' + 'function must return `null` or an `Error` but returned a %s. ' + 'You may have forgotten to pass an argument to the type checker ' + 'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' + 'shape all require an argument).', componentName || 'React class', location, typeSpecName, typeof error);
         if (error instanceof Error && !(error.message in loggedTypeFailures)) {
           // Only monitor this failure once because there tends to be a lot of the
           // same error.
           loggedTypeFailures[error.message] = true;

           var stack = getStack ? getStack() : '';

           warning$2(false, 'Failed %s type: %s%s', location, error.message, stack != null ? stack : '');
         }
       }
     }
   }
 }

 var checkPropTypes_1 = checkPropTypes;

 var factoryWithTypeCheckers = function (isValidElement, throwOnDirectAccess) {
   /* global Symbol */
   var ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
   var FAUX_ITERATOR_SYMBOL = '@@iterator'; // Before Symbol spec.

   /**
    * Returns the iterator method function contained on the iterable object.
    *
    * Be sure to invoke the function with the iterable as context:
    *
    *     var iteratorFn = getIteratorFn(myIterable);
    *     if (iteratorFn) {
    *       var iterator = iteratorFn.call(myIterable);
    *       ...
    *     }
    *
    * @param {?object} maybeIterable
    * @return {?function}
    */
   function getIteratorFn(maybeIterable) {
     var iteratorFn = maybeIterable && (ITERATOR_SYMBOL && maybeIterable[ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL]);
     if (typeof iteratorFn === 'function') {
       return iteratorFn;
     }
   }

   /**
    * Collection of methods that allow declaration and validation of props that are
    * supplied to React components. Example usage:
    *
    *   var Props = require('ReactPropTypes');
    *   var MyArticle = React.createClass({
    *     propTypes: {
    *       // An optional string prop named "description".
    *       description: Props.string,
    *
    *       // A required enum prop named "category".
    *       category: Props.oneOf(['News','Photos']).isRequired,
    *
    *       // A prop named "dialog" that requires an instance of Dialog.
    *       dialog: Props.instanceOf(Dialog).isRequired
    *     },
    *     render: function() { ... }
    *   });
    *
    * A more formal specification of how these methods are used:
    *
    *   type := array|bool|func|object|number|string|oneOf([...])|instanceOf(...)
    *   decl := ReactPropTypes.{type}(.isRequired)?
    *
    * Each and every declaration produces a function with the same signature. This
    * allows the creation of custom validation functions. For example:
    *
    *  var MyLink = React.createClass({
    *    propTypes: {
    *      // An optional string or URI prop named "href".
    *      href: function(props, propName, componentName) {
    *        var propValue = props[propName];
    *        if (propValue != null && typeof propValue !== 'string' &&
    *            !(propValue instanceof URI)) {
    *          return new Error(
    *            'Expected a string or an URI for ' + propName + ' in ' +
    *            componentName
    *          );
    *        }
    *      }
    *    },
    *    render: function() {...}
    *  });
    *
    * @internal
    */

   var ANONYMOUS = '<<anonymous>>';

   // Important!
   // Keep this list in sync with production version in `./factoryWithThrowingShims.js`.
   var ReactPropTypes = {
     array: createPrimitiveTypeChecker('array'),
     bool: createPrimitiveTypeChecker('boolean'),
     func: createPrimitiveTypeChecker('function'),
     number: createPrimitiveTypeChecker('number'),
     object: createPrimitiveTypeChecker('object'),
     string: createPrimitiveTypeChecker('string'),
     symbol: createPrimitiveTypeChecker('symbol'),

     any: createAnyTypeChecker(),
     arrayOf: createArrayOfTypeChecker,
     element: createElementTypeChecker(),
     instanceOf: createInstanceTypeChecker,
     node: createNodeChecker(),
     objectOf: createObjectOfTypeChecker,
     oneOf: createEnumTypeChecker,
     oneOfType: createUnionTypeChecker,
     shape: createShapeTypeChecker,
     exact: createStrictShapeTypeChecker
   };

   /**
    * inlined Object.is polyfill to avoid requiring consumers ship their own
    * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
    */
   /*eslint-disable no-self-compare*/
   function is(x, y) {
     // SameValue algorithm
     if (x === y) {
       // Steps 1-5, 7-10
       // Steps 6.b-6.e: +0 != -0
       return x !== 0 || 1 / x === 1 / y;
     } else {
       // Step 6.a: NaN == NaN
       return x !== x && y !== y;
     }
   }
   /*eslint-enable no-self-compare*/

   /**
    * We use an Error-like object for backward compatibility as people may call
    * PropTypes directly and inspect their output. However, we don't use real
    * Errors anymore. We don't inspect their stack anyway, and creating them
    * is prohibitively expensive if they are created too often, such as what
    * happens in oneOfType() for any type before the one that matched.
    */
   function PropTypeError(message) {
     this.message = message;
     this.stack = '';
   }
   // Make `instanceof Error` still work for returned errors.
   PropTypeError.prototype = Error.prototype;

   function createChainableTypeChecker(validate) {
     {
       var manualPropTypeCallCache = {};
       var manualPropTypeWarningCount = 0;
     }
     function checkType(isRequired, props, propName, componentName, location, propFullName, secret) {
       componentName = componentName || ANONYMOUS;
       propFullName = propFullName || propName;

       if (secret !== ReactPropTypesSecret_1) {
         if (throwOnDirectAccess) {
           // New behavior only for users of `prop-types` package
           invariant_1(false, 'Calling PropTypes validators directly is not supported by the `prop-types` package. ' + 'Use `PropTypes.checkPropTypes()` to call them. ' + 'Read more at http://fb.me/use-check-prop-types');
         } else if (typeof console !== 'undefined') {
           // Old behavior for people using React.PropTypes
           var cacheKey = componentName + ':' + propName;
           if (!manualPropTypeCallCache[cacheKey] &&
           // Avoid spamming the console because they are often not actionable except for lib authors
           manualPropTypeWarningCount < 3) {
             warning_1$1(false, 'You are manually calling a React.PropTypes validation ' + 'function for the `%s` prop on `%s`. This is deprecated ' + 'and will throw in the standalone `prop-types` package. ' + 'You may be seeing this warning due to a third-party PropTypes ' + 'library. See https://fb.me/react-warning-dont-call-proptypes ' + 'for details.', propFullName, componentName);
             manualPropTypeCallCache[cacheKey] = true;
             manualPropTypeWarningCount++;
           }
         }
       }
       if (props[propName] == null) {
         if (isRequired) {
           if (props[propName] === null) {
             return new PropTypeError('The ' + location + ' `' + propFullName + '` is marked as required ' + ('in `' + componentName + '`, but its value is `null`.'));
           }
           return new PropTypeError('The ' + location + ' `' + propFullName + '` is marked as required in ' + ('`' + componentName + '`, but its value is `undefined`.'));
         }
         return null;
       } else {
         return validate(props, propName, componentName, location, propFullName);
       }
     }

     var chainedCheckType = checkType.bind(null, false);
     chainedCheckType.isRequired = checkType.bind(null, true);

     return chainedCheckType;
   }

   function createPrimitiveTypeChecker(expectedType) {
     function validate(props, propName, componentName, location, propFullName, secret) {
       var propValue = props[propName];
       var propType = getPropType(propValue);
       if (propType !== expectedType) {
         // `propValue` being instance of, say, date/regexp, pass the 'object'
         // check, but we can offer a more precise error message here rather than
         // 'of type `object`'.
         var preciseType = getPreciseType(propValue);

         return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + preciseType + '` supplied to `' + componentName + '`, expected ') + ('`' + expectedType + '`.'));
       }
       return null;
     }
     return createChainableTypeChecker(validate);
   }

   function createAnyTypeChecker() {
     return createChainableTypeChecker(emptyFunction_1.thatReturnsNull);
   }

   function createArrayOfTypeChecker(typeChecker) {
     function validate(props, propName, componentName, location, propFullName) {
       if (typeof typeChecker !== 'function') {
         return new PropTypeError('Property `' + propFullName + '` of component `' + componentName + '` has invalid PropType notation inside arrayOf.');
       }
       var propValue = props[propName];
       if (!Array.isArray(propValue)) {
         var propType = getPropType(propValue);
         return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected an array.'));
       }
       for (var i = 0; i < propValue.length; i++) {
         var error = typeChecker(propValue, i, componentName, location, propFullName + '[' + i + ']', ReactPropTypesSecret_1);
         if (error instanceof Error) {
           return error;
         }
       }
       return null;
     }
     return createChainableTypeChecker(validate);
   }

   function createElementTypeChecker() {
     function validate(props, propName, componentName, location, propFullName) {
       var propValue = props[propName];
       if (!isValidElement(propValue)) {
         var propType = getPropType(propValue);
         return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected a single ReactElement.'));
       }
       return null;
     }
     return createChainableTypeChecker(validate);
   }

   function createInstanceTypeChecker(expectedClass) {
     function validate(props, propName, componentName, location, propFullName) {
       if (!(props[propName] instanceof expectedClass)) {
         var expectedClassName = expectedClass.name || ANONYMOUS;
         var actualClassName = getClassName(props[propName]);
         return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + actualClassName + '` supplied to `' + componentName + '`, expected ') + ('instance of `' + expectedClassName + '`.'));
       }
       return null;
     }
     return createChainableTypeChecker(validate);
   }

   function createEnumTypeChecker(expectedValues) {
     if (!Array.isArray(expectedValues)) {
       warning_1$1(false, 'Invalid argument supplied to oneOf, expected an instance of array.');
       return emptyFunction_1.thatReturnsNull;
     }

     function validate(props, propName, componentName, location, propFullName) {
       var propValue = props[propName];
       for (var i = 0; i < expectedValues.length; i++) {
         if (is(propValue, expectedValues[i])) {
           return null;
         }
       }

       var valuesString = JSON.stringify(expectedValues);
       return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of value `' + propValue + '` ' + ('supplied to `' + componentName + '`, expected one of ' + valuesString + '.'));
     }
     return createChainableTypeChecker(validate);
   }

   function createObjectOfTypeChecker(typeChecker) {
     function validate(props, propName, componentName, location, propFullName) {
       if (typeof typeChecker !== 'function') {
         return new PropTypeError('Property `' + propFullName + '` of component `' + componentName + '` has invalid PropType notation inside objectOf.');
       }
       var propValue = props[propName];
       var propType = getPropType(propValue);
       if (propType !== 'object') {
         return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected an object.'));
       }
       for (var key in propValue) {
         if (propValue.hasOwnProperty(key)) {
           var error = typeChecker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret_1);
           if (error instanceof Error) {
             return error;
           }
         }
       }
       return null;
     }
     return createChainableTypeChecker(validate);
   }

   function createUnionTypeChecker(arrayOfTypeCheckers) {
     if (!Array.isArray(arrayOfTypeCheckers)) {
       warning_1$1(false, 'Invalid argument supplied to oneOfType, expected an instance of array.');
       return emptyFunction_1.thatReturnsNull;
     }

     for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
       var checker = arrayOfTypeCheckers[i];
       if (typeof checker !== 'function') {
         warning_1$1(false, 'Invalid argument supplied to oneOfType. Expected an array of check functions, but ' + 'received %s at index %s.', getPostfixForTypeWarning(checker), i);
         return emptyFunction_1.thatReturnsNull;
       }
     }

     function validate(props, propName, componentName, location, propFullName) {
       for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
         var checker = arrayOfTypeCheckers[i];
         if (checker(props, propName, componentName, location, propFullName, ReactPropTypesSecret_1) == null) {
           return null;
         }
       }

       return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` supplied to ' + ('`' + componentName + '`.'));
     }
     return createChainableTypeChecker(validate);
   }

   function createNodeChecker() {
     function validate(props, propName, componentName, location, propFullName) {
       if (!isNode(props[propName])) {
         return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` supplied to ' + ('`' + componentName + '`, expected a ReactNode.'));
       }
       return null;
     }
     return createChainableTypeChecker(validate);
   }

   function createShapeTypeChecker(shapeTypes) {
     function validate(props, propName, componentName, location, propFullName) {
       var propValue = props[propName];
       var propType = getPropType(propValue);
       if (propType !== 'object') {
         return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type `' + propType + '` ' + ('supplied to `' + componentName + '`, expected `object`.'));
       }
       for (var key in shapeTypes) {
         var checker = shapeTypes[key];
         if (!checker) {
           continue;
         }
         var error = checker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret_1);
         if (error) {
           return error;
         }
       }
       return null;
     }
     return createChainableTypeChecker(validate);
   }

   function createStrictShapeTypeChecker(shapeTypes) {
     function validate(props, propName, componentName, location, propFullName) {
       var propValue = props[propName];
       var propType = getPropType(propValue);
       if (propType !== 'object') {
         return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type `' + propType + '` ' + ('supplied to `' + componentName + '`, expected `object`.'));
       }
       // We need to check all keys in case some are required but missing from
       // props.
       var allKeys = objectAssign({}, props[propName], shapeTypes);
       for (var key in allKeys) {
         var checker = shapeTypes[key];
         if (!checker) {
           return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` key `' + key + '` supplied to `' + componentName + '`.' + '\nBad object: ' + JSON.stringify(props[propName], null, '  ') + '\nValid keys: ' + JSON.stringify(Object.keys(shapeTypes), null, '  '));
         }
         var error = checker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret_1);
         if (error) {
           return error;
         }
       }
       return null;
     }

     return createChainableTypeChecker(validate);
   }

   function isNode(propValue) {
     switch (typeof propValue) {
       case 'number':
       case 'string':
       case 'undefined':
         return true;
       case 'boolean':
         return !propValue;
       case 'object':
         if (Array.isArray(propValue)) {
           return propValue.every(isNode);
         }
         if (propValue === null || isValidElement(propValue)) {
           return true;
         }

         var iteratorFn = getIteratorFn(propValue);
         if (iteratorFn) {
           var iterator = iteratorFn.call(propValue);
           var step;
           if (iteratorFn !== propValue.entries) {
             while (!(step = iterator.next()).done) {
               if (!isNode(step.value)) {
                 return false;
               }
             }
           } else {
             // Iterator will provide entry [k,v] tuples rather than values.
             while (!(step = iterator.next()).done) {
               var entry = step.value;
               if (entry) {
                 if (!isNode(entry[1])) {
                   return false;
                 }
               }
             }
           }
         } else {
           return false;
         }

         return true;
       default:
         return false;
     }
   }

   function isSymbol(propType, propValue) {
     // Native Symbol.
     if (propType === 'symbol') {
       return true;
     }

     // 19.4.3.5 Symbol.prototype[@@toStringTag] === 'Symbol'
     if (propValue['@@toStringTag'] === 'Symbol') {
       return true;
     }

     // Fallback for non-spec compliant Symbols which are polyfilled.
     if (typeof Symbol === 'function' && propValue instanceof Symbol) {
       return true;
     }

     return false;
   }

   // Equivalent of `typeof` but with special handling for array and regexp.
   function getPropType(propValue) {
     var propType = typeof propValue;
     if (Array.isArray(propValue)) {
       return 'array';
     }
     if (propValue instanceof RegExp) {
       // Old webkits (at least until Android 4.0) return 'function' rather than
       // 'object' for typeof a RegExp. We'll normalize this here so that /bla/
       // passes PropTypes.object.
       return 'object';
     }
     if (isSymbol(propType, propValue)) {
       return 'symbol';
     }
     return propType;
   }

   // This handles more types than `getPropType`. Only used for error messages.
   // See `createPrimitiveTypeChecker`.
   function getPreciseType(propValue) {
     if (typeof propValue === 'undefined' || propValue === null) {
       return '' + propValue;
     }
     var propType = getPropType(propValue);
     if (propType === 'object') {
       if (propValue instanceof Date) {
         return 'date';
       } else if (propValue instanceof RegExp) {
         return 'regexp';
       }
     }
     return propType;
   }

   // Returns a string that is postfixed to a warning about an invalid type.
   // For example, "undefined" or "of type array"
   function getPostfixForTypeWarning(value) {
     var type = getPreciseType(value);
     switch (type) {
       case 'array':
       case 'object':
         return 'an ' + type;
       case 'boolean':
       case 'date':
       case 'regexp':
         return 'a ' + type;
       default:
         return type;
     }
   }

   // Returns class name of the object, if any.
   function getClassName(propValue) {
     if (!propValue.constructor || !propValue.constructor.name) {
       return ANONYMOUS;
     }
     return propValue.constructor.name;
   }

   ReactPropTypes.checkPropTypes = checkPropTypes_1;
   ReactPropTypes.PropTypes = ReactPropTypes;

   return ReactPropTypes;
 };

 var propTypes = createCommonjsModule(function (module) {
 /**
  * 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.
  */

 {
   var REACT_ELEMENT_TYPE = typeof Symbol === 'function' && Symbol.for && Symbol.for('react.element') || 0xeac7;

   var isValidElement = function (object) {
     return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
   };

   // By explicitly using `prop-types` you are opting into new development behavior.
   // http://fb.me/prop-types-in-prod
   var throwOnDirectAccess = true;
   module.exports = factoryWithTypeCheckers(isValidElement, throwOnDirectAccess);
 }
 });

 /**
  * 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.
  */

 var invariant$2 = function (condition, format, a, b, c, d, e, f) {
   {
     if (format === undefined) {
       throw new Error('invariant requires an error message argument');
     }
   }

   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$1 = invariant$2;

 function isAbsolute(pathname) {
   return pathname.charAt(0) === '/';
 }

 // About 1.5x faster than the two-arg version of Array#splice()
 function spliceOne(list, index) {
   for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1) {
     list[i] = list[k];
   }

   list.pop();
 }

 // This implementation is based heavily on node's url.parse
 function resolvePathname(to) {
   var from = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';

   var toParts = to && to.split('/') || [];
   var fromParts = from && from.split('/') || [];

   var isToAbs = to && isAbsolute(to);
   var isFromAbs = from && isAbsolute(from);
   var mustEndAbs = isToAbs || isFromAbs;

   if (to && isAbsolute(to)) {
     // to is absolute
     fromParts = toParts;
   } else if (toParts.length) {
     // to is relative, drop the filename
     fromParts.pop();
     fromParts = fromParts.concat(toParts);
   }

   if (!fromParts.length) return '/';

   var hasTrailingSlash = void 0;
   if (fromParts.length) {
     var last = fromParts[fromParts.length - 1];
     hasTrailingSlash = last === '.' || last === '..' || last === '';
   } else {
     hasTrailingSlash = false;
   }

   var up = 0;
   for (var i = fromParts.length; i >= 0; i--) {
     var part = fromParts[i];

     if (part === '.') {
       spliceOne(fromParts, i);
     } else if (part === '..') {
       spliceOne(fromParts, i);
       up++;
     } else if (up) {
       spliceOne(fromParts, i);
       up--;
     }
   }

   if (!mustEndAbs) for (; up--; up) {
     fromParts.unshift('..');
   }if (mustEndAbs && fromParts[0] !== '' && (!fromParts[0] || !isAbsolute(fromParts[0]))) fromParts.unshift('');

   var result = fromParts.join('/');

   if (hasTrailingSlash && result.substr(-1) !== '/') result += '/';

   return result;
 }

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

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

   if (a == null || b == null) return false;

   if (Array.isArray(a)) {
     return Array.isArray(b) && a.length === b.length && a.every(function (item, index) {
       return valueEqual(item, b[index]);
     });
   }

   var aType = typeof a === 'undefined' ? 'undefined' : _typeof(a);
   var bType = typeof b === 'undefined' ? 'undefined' : _typeof(b);

   if (aType !== bType) return false;

   if (aType === 'object') {
     var aValue = a.valueOf();
     var bValue = b.valueOf();

     if (aValue !== a || bValue !== b) return valueEqual(aValue, bValue);

     var aKeys = Object.keys(a);
     var bKeys = Object.keys(b);

     if (aKeys.length !== bKeys.length) return false;

     return aKeys.every(function (key) {
       return valueEqual(a[key], b[key]);
     });
   }

   return false;
 }

 var addLeadingSlash = function addLeadingSlash(path) {
   return path.charAt(0) === '/' ? path : '/' + path;
 };

 var stripLeadingSlash = function stripLeadingSlash(path) {
   return path.charAt(0) === '/' ? path.substr(1) : path;
 };

 var hasBasename = function hasBasename(path, prefix) {
   return new RegExp('^' + prefix + '(\\/|\\?|#|$)', 'i').test(path);
 };

 var stripBasename = function stripBasename(path, prefix) {
   return hasBasename(path, prefix) ? path.substr(prefix.length) : path;
 };

 var stripTrailingSlash = function stripTrailingSlash(path) {
   return path.charAt(path.length - 1) === '/' ? path.slice(0, -1) : path;
 };

 var parsePath = function parsePath(path) {
   var pathname = path || '/';
   var search = '';
   var hash = '';

   var hashIndex = pathname.indexOf('#');
   if (hashIndex !== -1) {
     hash = pathname.substr(hashIndex);
     pathname = pathname.substr(0, hashIndex);
   }

   var searchIndex = pathname.indexOf('?');
   if (searchIndex !== -1) {
     search = pathname.substr(searchIndex);
     pathname = pathname.substr(0, searchIndex);
   }

   return {
     pathname: pathname,
     search: search === '?' ? '' : search,
     hash: hash === '#' ? '' : hash
   };
 };

 var createPath = function createPath(location) {
   var pathname = location.pathname,
       search = location.search,
       hash = location.hash;

   var path = pathname || '/';

   if (search && search !== '?') path += search.charAt(0) === '?' ? search : '?' + search;

   if (hash && hash !== '#') path += hash.charAt(0) === '#' ? hash : '#' + hash;

   return path;
 };

 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 createLocation = function createLocation(path, state, key, currentLocation) {
   var location = void 0;
   if (typeof path === 'string') {
     // Two-arg form: push(path, state)
     location = parsePath(path);
     location.state = state;
   } else {
     // One-arg form: push(location)
     location = _extends({}, path);

     if (location.pathname === undefined) location.pathname = '';

     if (location.search) {
       if (location.search.charAt(0) !== '?') location.search = '?' + location.search;
     } else {
       location.search = '';
     }

     if (location.hash) {
       if (location.hash.charAt(0) !== '#') location.hash = '#' + location.hash;
     } else {
       location.hash = '';
     }

     if (state !== undefined && location.state === undefined) location.state = state;
   }

   try {
     location.pathname = decodeURI(location.pathname);
   } catch (e) {
     if (e instanceof URIError) {
       throw new URIError('Pathname "' + location.pathname + '" could not be decoded. ' + 'This is likely caused by an invalid percent-encoding.');
     } else {
       throw e;
     }
   }

   if (key) location.key = key;

   if (currentLocation) {
     // Resolve incomplete/relative pathname relative to current location.
     if (!location.pathname) {
       location.pathname = currentLocation.pathname;
     } else if (location.pathname.charAt(0) !== '/') {
       location.pathname = resolvePathname(location.pathname, currentLocation.pathname);
     }
   } else {
     // When there is no prior location and pathname is empty, set it to /
     if (!location.pathname) {
       location.pathname = '/';
     }
   }

   return location;
 };

 var locationsAreEqual = function locationsAreEqual(a, b) {
   return a.pathname === b.pathname && a.search === b.search && a.hash === b.hash && a.key === b.key && valueEqual(a.state, b.state);
 };

 var createTransitionManager = function createTransitionManager() {
   var prompt = null;

   var setPrompt = function setPrompt(nextPrompt) {
     warning_1(prompt == null, 'A history supports only one prompt at a time');

     prompt = nextPrompt;

     return function () {
       if (prompt === nextPrompt) prompt = null;
     };
   };

   var confirmTransitionTo = function confirmTransitionTo(location, action, getUserConfirmation, callback) {
     // TODO: If another transition starts while we're still confirming
     // the previous one, we may end up in a weird state. Figure out the
     // best way to handle this.
     if (prompt != null) {
       var result = typeof prompt === 'function' ? prompt(location, action) : prompt;

       if (typeof result === 'string') {
         if (typeof getUserConfirmation === 'function') {
           getUserConfirmation(result, callback);
         } else {
           warning_1(false, 'A history needs a getUserConfirmation function in order to use a prompt message');

           callback(true);
         }
       } else {
         // Return false from a transition hook to cancel the transition.
         callback(result !== false);
       }
     } else {
       callback(true);
     }
   };

   var listeners = [];

   var appendListener = function appendListener(fn) {
     var isActive = true;

     var listener = function listener() {
       if (isActive) fn.apply(undefined, arguments);
     };

     listeners.push(listener);

     return function () {
       isActive = false;
       listeners = listeners.filter(function (item) {
         return item !== listener;
       });
     };
   };

   var notifyListeners = function notifyListeners() {
     for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
       args[_key] = arguments[_key];
     }

     listeners.forEach(function (listener) {
       return listener.apply(undefined, args);
     });
   };

   return {
     setPrompt: setPrompt,
     confirmTransitionTo: confirmTransitionTo,
     appendListener: appendListener,
     notifyListeners: notifyListeners
   };
 };

 var canUseDOM = !!(typeof window !== 'undefined' && window.document && window.document.createElement);

 var addEventListener = function addEventListener(node, event, listener) {
   return node.addEventListener ? node.addEventListener(event, listener, false) : node.attachEvent('on' + event, listener);
 };

 var removeEventListener = function removeEventListener(node, event, listener) {
   return node.removeEventListener ? node.removeEventListener(event, listener, false) : node.detachEvent('on' + event, listener);
 };

 var getConfirmation = function getConfirmation(message, callback) {
   return callback(window.confirm(message));
 }; // eslint-disable-line no-alert

 /**
  * Returns true if the HTML5 history API is supported. Taken from Modernizr.
  *
  * https://github.com/Modernizr/Modernizr/blob/master/LICENSE
  * https://github.com/Modernizr/Modernizr/blob/master/feature-detects/history.js
  * changed to avoid false negatives for Windows Phones: https://github.com/reactjs/react-router/issues/586
  */
 var supportsHistory = function supportsHistory() {
   var ua = window.navigator.userAgent;

   if ((ua.indexOf('Android 2.') !== -1 || ua.indexOf('Android 4.0') !== -1) && ua.indexOf('Mobile Safari') !== -1 && ua.indexOf('Chrome') === -1 && ua.indexOf('Windows Phone') === -1) return false;

   return window.history && 'pushState' in window.history;
 };

 /**
  * Returns true if browser fires popstate on hash change.
  * IE10 and IE11 do not.
  */
 var supportsPopStateOnHashChange = function supportsPopStateOnHashChange() {
   return window.navigator.userAgent.indexOf('Trident') === -1;
 };

 /**
  * Returns false if using go(n) with hash history causes a full page reload.
  */
 var supportsGoWithoutReloadUsingHash = function supportsGoWithoutReloadUsingHash() {
   return window.navigator.userAgent.indexOf('Firefox') === -1;
 };

 /**
  * Returns true if a given popstate event is an extraneous WebKit event.
  * Accounts for the fact that Chrome on iOS fires real popstate events
  * containing undefined state when pressing the back button.
  */
 var isExtraneousPopstateEvent = function isExtraneousPopstateEvent(event) {
   return event.state === undefined && navigator.userAgent.indexOf('CriOS') === -1;
 };

 var _typeof$1 = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
   return typeof obj;
 } : function (obj) {
   return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
 };

 var _extends$1 = 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 PopStateEvent = 'popstate';
 var HashChangeEvent = 'hashchange';

 var getHistoryState = function getHistoryState() {
   try {
     return window.history.state || {};
   } catch (e) {
     // IE 11 sometimes throws when accessing window.history.state
     // See https://github.com/ReactTraining/history/pull/289
     return {};
   }
 };

 /**
  * Creates a history object that uses the HTML5 history API including
  * pushState, replaceState, and the popstate event.
  */
 var createBrowserHistory = function createBrowserHistory() {
   var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

   invariant_1$1(canUseDOM, 'Browser history needs a DOM');

   var globalHistory = window.history;
   var canUseHistory = supportsHistory();
   var needsHashChangeListener = !supportsPopStateOnHashChange();

   var _props$forceRefresh = props.forceRefresh,
       forceRefresh = _props$forceRefresh === undefined ? false : _props$forceRefresh,
       _props$getUserConfirm = props.getUserConfirmation,
       getUserConfirmation = _props$getUserConfirm === undefined ? getConfirmation : _props$getUserConfirm,
       _props$keyLength = props.keyLength,
       keyLength = _props$keyLength === undefined ? 6 : _props$keyLength;

   var basename = props.basename ? stripTrailingSlash(addLeadingSlash(props.basename)) : '';

   var getDOMLocation = function getDOMLocation(historyState) {
     var _ref = historyState || {},
         key = _ref.key,
         state = _ref.state;

     var _window$location = window.location,
         pathname = _window$location.pathname,
         search = _window$location.search,
         hash = _window$location.hash;

     var path = pathname + search + hash;

     warning_1(!basename || hasBasename(path, basename), 'You are attempting to use a basename on a page whose URL path does not begin ' + 'with the basename. Expected path "' + path + '" to begin with "' + basename + '".');

     if (basename) path = stripBasename(path, basename);

     return createLocation(path, state, key);
   };

   var createKey = function createKey() {
     return Math.random().toString(36).substr(2, keyLength);
   };

   var transitionManager = createTransitionManager();

   var setState = function setState(nextState) {
     _extends$1(history, nextState);

     history.length = globalHistory.length;

     transitionManager.notifyListeners(history.location, history.action);
   };

   var handlePopState = function handlePopState(event) {
     // Ignore extraneous popstate events in WebKit.
     if (isExtraneousPopstateEvent(event)) return;

     handlePop(getDOMLocation(event.state));
   };

   var handleHashChange = function handleHashChange() {
     handlePop(getDOMLocation(getHistoryState()));
   };

   var forceNextPop = false;

   var handlePop = function handlePop(location) {
     if (forceNextPop) {
       forceNextPop = false;
       setState();
     } else {
       var action = 'POP';

       transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {
         if (ok) {
           setState({ action: action, location: location });
         } else {
           revertPop(location);
         }
       });
     }
   };

   var revertPop = function revertPop(fromLocation) {
     var toLocation = history.location;

     // TODO: We could probably make this more reliable by
     // keeping a list of keys we've seen in sessionStorage.
     // Instead, we just default to 0 for keys we don't know.

     var toIndex = allKeys.indexOf(toLocation.key);

     if (toIndex === -1) toIndex = 0;

     var fromIndex = allKeys.indexOf(fromLocation.key);

     if (fromIndex === -1) fromIndex = 0;

     var delta = toIndex - fromIndex;

     if (delta) {
       forceNextPop = true;
       go(delta);
     }
   };

   var initialLocation = getDOMLocation(getHistoryState());
   var allKeys = [initialLocation.key];

   // Public interface

   var createHref = function createHref(location) {
     return basename + createPath(location);
   };

   var push = function push(path, state) {
     warning_1(!((typeof path === 'undefined' ? 'undefined' : _typeof$1(path)) === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to push when the 1st ' + 'argument is a location-like object that already has state; it is ignored');

     var action = 'PUSH';
     var location = createLocation(path, state, createKey(), history.location);

     transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {
       if (!ok) return;

       var href = createHref(location);
       var key = location.key,
           state = location.state;

       if (canUseHistory) {
         globalHistory.pushState({ key: key, state: state }, null, href);

         if (forceRefresh) {
           window.location.href = href;
         } else {
           var prevIndex = allKeys.indexOf(history.location.key);
           var nextKeys = allKeys.slice(0, prevIndex === -1 ? 0 : prevIndex + 1);

           nextKeys.push(location.key);
           allKeys = nextKeys;

           setState({ action: action, location: location });
         }
       } else {
         warning_1(state === undefined, 'Browser history cannot push state in browsers that do not support HTML5 history');

         window.location.href = href;
       }
     });
   };

   var replace = function replace(path, state) {
     warning_1(!((typeof path === 'undefined' ? 'undefined' : _typeof$1(path)) === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to replace when the 1st ' + 'argument is a location-like object that already has state; it is ignored');

     var action = 'REPLACE';
     var location = createLocation(path, state, createKey(), history.location);

     transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {
       if (!ok) return;

       var href = createHref(location);
       var key = location.key,
           state = location.state;

       if (canUseHistory) {
         globalHistory.replaceState({ key: key, state: state }, null, href);

         if (forceRefresh) {
           window.location.replace(href);
         } else {
           var prevIndex = allKeys.indexOf(history.location.key);

           if (prevIndex !== -1) allKeys[prevIndex] = location.key;

           setState({ action: action, location: location });
         }
       } else {
         warning_1(state === undefined, 'Browser history cannot replace state in browsers that do not support HTML5 history');

         window.location.replace(href);
       }
     });
   };

   var go = function go(n) {
     globalHistory.go(n);
   };

   var goBack = function goBack() {
     return go(-1);
   };

   var goForward = function goForward() {
     return go(1);
   };

   var listenerCount = 0;

   var checkDOMListeners = function checkDOMListeners(delta) {
     listenerCount += delta;

     if (listenerCount === 1) {
       addEventListener(window, PopStateEvent, handlePopState);

       if (needsHashChangeListener) addEventListener(window, HashChangeEvent, handleHashChange);
     } else if (listenerCount === 0) {
       removeEventListener(window, PopStateEvent, handlePopState);

       if (needsHashChangeListener) removeEventListener(window, HashChangeEvent, handleHashChange);
     }
   };

   var isBlocked = false;

   var block = function block() {
     var prompt = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;

     var unblock = transitionManager.setPrompt(prompt);

     if (!isBlocked) {
       checkDOMListeners(1);
       isBlocked = true;
     }

     return function () {
       if (isBlocked) {
         isBlocked = false;
         checkDOMListeners(-1);
       }

       return unblock();
     };
   };

   var listen = function listen(listener) {
     var unlisten = transitionManager.appendListener(listener);
     checkDOMListeners(1);

     return function () {
       checkDOMListeners(-1);
       unlisten();
     };
   };

   var history = {
     length: globalHistory.length,
     action: 'POP',
     location: initialLocation,
     createHref: createHref,
     push: push,
     replace: replace,
     go: go,
     goBack: goBack,
     goForward: goForward,
     block: block,
     listen: listen
   };

   return history;
 };

 var _extends$2 = 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 HashChangeEvent$1 = 'hashchange';

 var HashPathCoders = {
   hashbang: {
     encodePath: function encodePath(path) {
       return path.charAt(0) === '!' ? path : '!/' + stripLeadingSlash(path);
     },
     decodePath: function decodePath(path) {
       return path.charAt(0) === '!' ? path.substr(1) : path;
     }
   },
   noslash: {
     encodePath: stripLeadingSlash,
     decodePath: addLeadingSlash
   },
   slash: {
     encodePath: addLeadingSlash,
     decodePath: addLeadingSlash
   }
 };

 var getHashPath = function getHashPath() {
   // We can't use window.location.hash here because it's not
   // consistent across browsers - Firefox will pre-decode it!
   var href = window.location.href;
   var hashIndex = href.indexOf('#');
   return hashIndex === -1 ? '' : href.substring(hashIndex + 1);
 };

 var pushHashPath = function pushHashPath(path) {
   return window.location.hash = path;
 };

 var replaceHashPath = function replaceHashPath(path) {
   var hashIndex = window.location.href.indexOf('#');

   window.location.replace(window.location.href.slice(0, hashIndex >= 0 ? hashIndex : 0) + '#' + path);
 };

 var createHashHistory = function createHashHistory() {
   var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

   invariant_1$1(canUseDOM, 'Hash history needs a DOM');

   var globalHistory = window.history;
   var canGoWithoutReload = supportsGoWithoutReloadUsingHash();

   var _props$getUserConfirm = props.getUserConfirmation,
       getUserConfirmation = _props$getUserConfirm === undefined ? getConfirmation : _props$getUserConfirm,
       _props$hashType = props.hashType,
       hashType = _props$hashType === undefined ? 'slash' : _props$hashType;

   var basename = props.basename ? stripTrailingSlash(addLeadingSlash(props.basename)) : '';

   var _HashPathCoders$hashT = HashPathCoders[hashType],
       encodePath = _HashPathCoders$hashT.encodePath,
       decodePath = _HashPathCoders$hashT.decodePath;

   var getDOMLocation = function getDOMLocation() {
     var path = decodePath(getHashPath());

     warning_1(!basename || hasBasename(path, basename), 'You are attempting to use a basename on a page whose URL path does not begin ' + 'with the basename. Expected path "' + path + '" to begin with "' + basename + '".');

     if (basename) path = stripBasename(path, basename);

     return createLocation(path);
   };

   var transitionManager = createTransitionManager();

   var setState = function setState(nextState) {
     _extends$2(history, nextState);

     history.length = globalHistory.length;

     transitionManager.notifyListeners(history.location, history.action);
   };

   var forceNextPop = false;
   var ignorePath = null;

   var handleHashChange = function handleHashChange() {
     var path = getHashPath();
     var encodedPath = encodePath(path);

     if (path !== encodedPath) {
       // Ensure we always have a properly-encoded hash.
       replaceHashPath(encodedPath);
     } else {
       var location = getDOMLocation();
       var prevLocation = history.location;

       if (!forceNextPop && locationsAreEqual(prevLocation, location)) return; // A hashchange doesn't always == location change.

       if (ignorePath === createPath(location)) return; // Ignore this change; we already setState in push/replace.

       ignorePath = null;

       handlePop(location);
     }
   };

   var handlePop = function handlePop(location) {
     if (forceNextPop) {
       forceNextPop = false;
       setState();
     } else {
       var action = 'POP';

       transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {
         if (ok) {
           setState({ action: action, location: location });
         } else {
           revertPop(location);
         }
       });
     }
   };

   var revertPop = function revertPop(fromLocation) {
     var toLocation = history.location;

     // TODO: We could probably make this more reliable by
     // keeping a list of paths we've seen in sessionStorage.
     // Instead, we just default to 0 for paths we don't know.

     var toIndex = allPaths.lastIndexOf(createPath(toLocation));

     if (toIndex === -1) toIndex = 0;

     var fromIndex = allPaths.lastIndexOf(createPath(fromLocation));

     if (fromIndex === -1) fromIndex = 0;

     var delta = toIndex - fromIndex;

     if (delta) {
       forceNextPop = true;
       go(delta);
     }
   };

   // Ensure the hash is encoded properly before doing anything else.
   var path = getHashPath();
   var encodedPath = encodePath(path);

   if (path !== encodedPath) replaceHashPath(encodedPath);

   var initialLocation = getDOMLocation();
   var allPaths = [createPath(initialLocation)];

   // Public interface

   var createHref = function createHref(location) {
     return '#' + encodePath(basename + createPath(location));
   };

   var push = function push(path, state) {
     warning_1(state === undefined, 'Hash history cannot push state; it is ignored');

     var action = 'PUSH';
     var location = createLocation(path, undefined, undefined, history.location);

     transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {
       if (!ok) return;

       var path = createPath(location);
       var encodedPath = encodePath(basename + path);
       var hashChanged = getHashPath() !== encodedPath;

       if (hashChanged) {
         // We cannot tell if a hashchange was caused by a PUSH, so we'd
         // rather setState here and ignore the hashchange. The caveat here
         // is that other hash histories in the page will consider it a POP.
         ignorePath = path;
         pushHashPath(encodedPath);

         var prevIndex = allPaths.lastIndexOf(createPath(history.location));
         var nextPaths = allPaths.slice(0, prevIndex === -1 ? 0 : prevIndex + 1);

         nextPaths.push(path);
         allPaths = nextPaths;

         setState({ action: action, location: location });
       } else {
         warning_1(false, 'Hash history cannot PUSH the same path; a new entry will not be added to the history stack');

         setState();
       }
     });
   };

   var replace = function replace(path, state) {
     warning_1(state === undefined, 'Hash history cannot replace state; it is ignored');

     var action = 'REPLACE';
     var location = createLocation(path, undefined, undefined, history.location);

     transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {
       if (!ok) return;

       var path = createPath(location);
       var encodedPath = encodePath(basename + path);
       var hashChanged = getHashPath() !== encodedPath;

       if (hashChanged) {
         // We cannot tell if a hashchange was caused by a REPLACE, so we'd
         // rather setState here and ignore the hashchange. The caveat here
         // is that other hash histories in the page will consider it a POP.
         ignorePath = path;
         replaceHashPath(encodedPath);
       }

       var prevIndex = allPaths.indexOf(createPath(history.location));

       if (prevIndex !== -1) allPaths[prevIndex] = path;

       setState({ action: action, location: location });
     });
   };

   var go = function go(n) {
     warning_1(canGoWithoutReload, 'Hash history go(n) causes a full page reload in this browser');

     globalHistory.go(n);
   };

   var goBack = function goBack() {
     return go(-1);
   };

   var goForward = function goForward() {
     return go(1);
   };

   var listenerCount = 0;

   var checkDOMListeners = function checkDOMListeners(delta) {
     listenerCount += delta;

     if (listenerCount === 1) {
       addEventListener(window, HashChangeEvent$1, handleHashChange);
     } else if (listenerCount === 0) {
       removeEventListener(window, HashChangeEvent$1, handleHashChange);
     }
   };

   var isBlocked = false;

   var block = function block() {
     var prompt = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;

     var unblock = transitionManager.setPrompt(prompt);

     if (!isBlocked) {
       checkDOMListeners(1);
       isBlocked = true;
     }

     return function () {
       if (isBlocked) {
         isBlocked = false;
         checkDOMListeners(-1);
       }

       return unblock();
     };
   };

   var listen = function listen(listener) {
     var unlisten = transitionManager.appendListener(listener);
     checkDOMListeners(1);

     return function () {
       checkDOMListeners(-1);
       unlisten();
     };
   };

   var history = {
     length: globalHistory.length,
     action: 'POP',
     location: initialLocation,
     createHref: createHref,
     push: push,
     replace: replace,
     go: go,
     goBack: goBack,
     goForward: goForward,
     block: block,
     listen: listen
   };

   return history;
 };

 var _typeof$2 = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
   return typeof obj;
 } : function (obj) {
   return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
 };

 var _extends$3 = 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 clamp = function clamp(n, lowerBound, upperBound) {
   return Math.min(Math.max(n, lowerBound), upperBound);
 };

 /**
  * Creates a history object that stores locations in memory.
  */
 var createMemoryHistory = function createMemoryHistory() {
   var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
   var getUserConfirmation = props.getUserConfirmation,
       _props$initialEntries = props.initialEntries,
       initialEntries = _props$initialEntries === undefined ? ['/'] : _props$initialEntries,
       _props$initialIndex = props.initialIndex,
       initialIndex = _props$initialIndex === undefined ? 0 : _props$initialIndex,
       _props$keyLength = props.keyLength,
       keyLength = _props$keyLength === undefined ? 6 : _props$keyLength;

   var transitionManager = createTransitionManager();

   var setState = function setState(nextState) {
     _extends$3(history, nextState);

     history.length = history.entries.length;

     transitionManager.notifyListeners(history.location, history.action);
   };

   var createKey = function createKey() {
     return Math.random().toString(36).substr(2, keyLength);
   };

   var index = clamp(initialIndex, 0, initialEntries.length - 1);
   var entries = initialEntries.map(function (entry) {
     return typeof entry === 'string' ? createLocation(entry, undefined, createKey()) : createLocation(entry, undefined, entry.key || createKey());
   });

   // Public interface

   var createHref = createPath;

   var push = function push(path, state) {
     warning_1(!((typeof path === 'undefined' ? 'undefined' : _typeof$2(path)) === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to push when the 1st ' + 'argument is a location-like object that already has state; it is ignored');

     var action = 'PUSH';
     var location = createLocation(path, state, createKey(), history.location);

     transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {
       if (!ok) return;

       var prevIndex = history.index;
       var nextIndex = prevIndex + 1;

       var nextEntries = history.entries.slice(0);
       if (nextEntries.length > nextIndex) {
         nextEntries.splice(nextIndex, nextEntries.length - nextIndex, location);
       } else {
         nextEntries.push(location);
       }

       setState({
         action: action,
         location: location,
         index: nextIndex,
         entries: nextEntries
       });
     });
   };

   var replace = function replace(path, state) {
     warning_1(!((typeof path === 'undefined' ? 'undefined' : _typeof$2(path)) === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to replace when the 1st ' + 'argument is a location-like object that already has state; it is ignored');

     var action = 'REPLACE';
     var location = createLocation(path, state, createKey(), history.location);

     transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {
       if (!ok) return;

       history.entries[history.index] = location;

       setState({ action: action, location: location });
     });
   };

   var go = function go(n) {
     var nextIndex = clamp(history.index + n, 0, history.entries.length - 1);

     var action = 'POP';
     var location = history.entries[nextIndex];

     transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {
       if (ok) {
         setState({
           action: action,
           location: location,
           index: nextIndex
         });
       } else {
         // Mimic the behavior of DOM histories by
         // causing a render after a cancelled POP.
         setState();
       }
     });
   };

   var goBack = function goBack() {
     return go(-1);
   };

   var goForward = function goForward() {
     return go(1);
   };

   var canGo = function canGo(n) {
     var nextIndex = history.index + n;
     return nextIndex >= 0 && nextIndex < history.entries.length;
   };

   var block = function block() {
     var prompt = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
     return transitionManager.setPrompt(prompt);
   };

   var listen = function listen(listener) {
     return transitionManager.appendListener(listener);
   };

   var history = {
     length: entries.length,
     action: 'POP',
     location: entries[index],
     index: index,
     entries: entries,
     createHref: createHref,
     push: push,
     replace: replace,
     go: go,
     goBack: goBack,
     goForward: goForward,
     canGo: canGo,
     block: block,
     listen: listen
   };

   return history;
 };

 var _extends$4 = 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;
 };

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

 function _possibleConstructorReturn(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;
 }

 function _inherits(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;
 }

 /**
  * The public API for putting history on context.
  */

 var Router = function (_React$Component) {
   _inherits(Router, _React$Component);

   function Router() {
     var _temp, _this, _ret;

     _classCallCheck(this, Router);

     for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
       args[_key] = arguments[_key];
     }

     return _ret = (_temp = (_this = _possibleConstructorReturn(this, _React$Component.call.apply(_React$Component, [this].concat(args))), _this), _this.state = {
       match: _this.computeMatch(_this.props.history.location.pathname)
     }, _temp), _possibleConstructorReturn(_this, _ret);
   }

   Router.prototype.getChildContext = function getChildContext() {
     return {
       router: _extends$4({}, this.context.router, {
         history: this.props.history,
         route: {
           location: this.props.history.location,
           match: this.state.match
         }
       })
     };
   };

   Router.prototype.computeMatch = function computeMatch(pathname) {
     return {
       path: "/",
       url: "/",
       params: {},
       isExact: pathname === "/"
     };
   };

   Router.prototype.componentWillMount = function componentWillMount() {
     var _this2 = this;

     var _props = this.props,
         children = _props.children,
         history = _props.history;

     invariant_1$1(children == null || React.Children.count(children) === 1, "A <Router> may have only one child element");

     // Do this here so we can setState when a <Redirect> changes the
     // location in componentWillMount. This happens e.g. when doing
     // server rendering using a <StaticRouter>.
     this.unlisten = history.listen(function () {
       _this2.setState({
         match: _this2.computeMatch(history.location.pathname)
       });
     });
   };

   Router.prototype.componentWillReceiveProps = function componentWillReceiveProps(nextProps) {
     warning_1(this.props.history === nextProps.history, "You cannot change <Router history>");
   };

   Router.prototype.componentWillUnmount = function componentWillUnmount() {
     this.unlisten();
   };

   Router.prototype.render = function render() {
     var children = this.props.children;

     return children ? React.Children.only(children) : null;
   };

   return Router;
 }(React.Component);

 Router.propTypes = {
   history: propTypes.object.isRequired,
   children: propTypes.node
 };
 Router.contextTypes = {
   router: propTypes.object
 };
 Router.childContextTypes = {
   router: propTypes.object.isRequired
 };

 // Written in this round about way for babel-transform-imports

 var _typeof$3 = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
   return typeof obj;
 } : function (obj) {
   return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
 };

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

 var _extends$5 = 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 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;
 };

 /**
  * The public API for a <Router> that uses HTML5 history.
  */

 var BrowserRouter = function (_React$Component) {
   inherits(BrowserRouter, _React$Component);

   function BrowserRouter() {
     var _temp, _this, _ret;

     classCallCheck(this, BrowserRouter);

     for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
       args[_key] = arguments[_key];
     }

     return _ret = (_temp = (_this = possibleConstructorReturn(this, _React$Component.call.apply(_React$Component, [this].concat(args))), _this), _this.history = createBrowserHistory(_this.props), _temp), possibleConstructorReturn(_this, _ret);
   }

   BrowserRouter.prototype.componentWillMount = function componentWillMount() {
     warning_1(!this.props.history, "<BrowserRouter> ignores the history prop. To use a custom history, " + "use `import { Router }` instead of `import { BrowserRouter as Router }`.");
   };

   BrowserRouter.prototype.render = function render() {
     return React.createElement(Router, { history: this.history, children: this.props.children });
   };

   return BrowserRouter;
 }(React.Component);

 BrowserRouter.propTypes = {
   basename: propTypes.string,
   forceRefresh: propTypes.bool,
   getUserConfirmation: propTypes.func,
   keyLength: propTypes.number,
   children: propTypes.node
 };

 /**
  * The public API for a <Router> that uses window.location.hash.
  */

 var HashRouter = function (_React$Component) {
   inherits(HashRouter, _React$Component);

   function HashRouter() {
     var _temp, _this, _ret;

     classCallCheck(this, HashRouter);

     for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
       args[_key] = arguments[_key];
     }

     return _ret = (_temp = (_this = possibleConstructorReturn(this, _React$Component.call.apply(_React$Component, [this].concat(args))), _this), _this.history = createHashHistory(_this.props), _temp), possibleConstructorReturn(_this, _ret);
   }

   HashRouter.prototype.componentWillMount = function componentWillMount() {
     warning_1(!this.props.history, "<HashRouter> ignores the history prop. To use a custom history, " + "use `import { Router }` instead of `import { HashRouter as Router }`.");
   };

   HashRouter.prototype.render = function render() {
     return React.createElement(Router, { history: this.history, children: this.props.children });
   };

   return HashRouter;
 }(React.Component);

 HashRouter.propTypes = {
   basename: propTypes.string,
   getUserConfirmation: propTypes.func,
   hashType: propTypes.oneOf(["hashbang", "noslash", "slash"]),
   children: propTypes.node
 };

 var isModifiedEvent = function isModifiedEvent(event) {
   return !!(event.metaKey || event.altKey || event.ctrlKey || event.shiftKey);
 };

 /**
  * The public API for rendering a history-aware <a>.
  */

 var Link = function (_React$Component) {
   inherits(Link, _React$Component);

   function Link() {
     var _temp, _this, _ret;

     classCallCheck(this, Link);

     for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
       args[_key] = arguments[_key];
     }

     return _ret = (_temp = (_this = possibleConstructorReturn(this, _React$Component.call.apply(_React$Component, [this].concat(args))), _this), _this.handleClick = function (event) {
       if (_this.props.onClick) _this.props.onClick(event);

       if (!event.defaultPrevented && // onClick prevented default
       event.button === 0 && // ignore everything but left clicks
       !_this.props.target && // let browser handle "target=_blank" etc.
       !isModifiedEvent(event) // ignore clicks with modifier keys
       ) {
           event.preventDefault();

           var history = _this.context.router.history;
           var _this$props = _this.props,
               replace = _this$props.replace,
               to = _this$props.to;


           if (replace) {
             history.replace(to);
           } else {
             history.push(to);
           }
         }
     }, _temp), possibleConstructorReturn(_this, _ret);
   }

   Link.prototype.render = function render() {
     var _props = this.props,
         replace = _props.replace,
         to = _props.to,
         innerRef = _props.innerRef,
         props = objectWithoutProperties(_props, ["replace", "to", "innerRef"]); // eslint-disable-line no-unused-vars

     invariant_1$1(this.context.router, "You should not use <Link> outside a <Router>");

     invariant_1$1(to !== undefined, 'You must specify the "to" property');

     var history = this.context.router.history;

     var location = typeof to === "string" ? createLocation(to, null, null, history.location) : to;

     var href = history.createHref(location);
     return React.createElement("a", _extends$5({}, props, { onClick: this.handleClick, href: href, ref: innerRef }));
   };

   return Link;
 }(React.Component);

 Link.propTypes = {
   onClick: propTypes.func,
   target: propTypes.string,
   replace: propTypes.bool,
   to: propTypes.oneOfType([propTypes.string, propTypes.object]).isRequired,
   innerRef: propTypes.oneOfType([propTypes.string, propTypes.func])
 };
 Link.defaultProps = {
   replace: false
 };
 Link.contextTypes = {
   router: propTypes.shape({
     history: propTypes.shape({
       push: propTypes.func.isRequired,
       replace: propTypes.func.isRequired,
       createHref: propTypes.func.isRequired
     }).isRequired
   }).isRequired
 };

 function _classCallCheck$1(instance, Constructor) {
   if (!(instance instanceof Constructor)) {
     throw new TypeError("Cannot call a class as a function");
   }
 }

 function _possibleConstructorReturn$1(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;
 }

 function _inherits$1(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;
 }

 /**
  * The public API for a <Router> that stores location in memory.
  */

 var MemoryRouter = function (_React$Component) {
   _inherits$1(MemoryRouter, _React$Component);

   function MemoryRouter() {
     var _temp, _this, _ret;

     _classCallCheck$1(this, MemoryRouter);

     for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
       args[_key] = arguments[_key];
     }

     return _ret = (_temp = (_this = _possibleConstructorReturn$1(this, _React$Component.call.apply(_React$Component, [this].concat(args))), _this), _this.history = createMemoryHistory(_this.props), _temp), _possibleConstructorReturn$1(_this, _ret);
   }

   MemoryRouter.prototype.componentWillMount = function componentWillMount() {
     warning_1(!this.props.history, "<MemoryRouter> ignores the history prop. To use a custom history, " + "use `import { Router }` instead of `import { MemoryRouter as Router }`.");
   };

   MemoryRouter.prototype.render = function render() {
     return React.createElement(Router, { history: this.history, children: this.props.children });
   };

   return MemoryRouter;
 }(React.Component);

 MemoryRouter.propTypes = {
   initialEntries: propTypes.array,
   initialIndex: propTypes.number,
   getUserConfirmation: propTypes.func,
   keyLength: propTypes.number,
   children: propTypes.node
 };

 // Written in this round about way for babel-transform-imports

 var toString = {}.toString;

 var isarray = Array.isArray || function (arr) {
   return toString.call(arr) == '[object Array]';
 };

 /**
  * Expose `pathToRegexp`.
  */
 var pathToRegexp_1 = pathToRegexp;
 var parse_1 = parse;
 var compile_1 = compile;
 var tokensToFunction_1 = tokensToFunction;
 var tokensToRegExp_1 = tokensToRegExp;

 /**
  * The main path matching regexp utility.
  *
  * @type {RegExp}
  */
 var PATH_REGEXP = new RegExp([
 // Match escaped characters that would otherwise appear in future matches.
 // This allows the user to escape special characters that won't transform.
 '(\\\\.)',
 // Match Express-style parameters and un-named parameters with a prefix
 // and optional suffixes. Matches appear as:
 //
 // "/:test(\\d+)?" => ["/", "test", "\d+", undefined, "?", undefined]
 // "/route(\\d+)"  => [undefined, undefined, undefined, "\d+", undefined, undefined]
 // "/*"            => ["/", undefined, undefined, undefined, undefined, "*"]
 '([\\/.])?(?:(?:\\:(\\w+)(?:\\(((?:\\\\.|[^\\\\()])+)\\))?|\\(((?:\\\\.|[^\\\\()])+)\\))([+*?])?|(\\*))'].join('|'), 'g');

 /**
  * Parse a string for the raw tokens.
  *
  * @param  {string}  str
  * @param  {Object=} options
  * @return {!Array}
  */
 function parse(str, options) {
   var tokens = [];
   var key = 0;
   var index = 0;
   var path = '';
   var defaultDelimiter = options && options.delimiter || '/';
   var res;

   while ((res = PATH_REGEXP.exec(str)) != null) {
     var m = res[0];
     var escaped = res[1];
     var offset = res.index;
     path += str.slice(index, offset);
     index = offset + m.length;

     // Ignore already escaped sequences.
     if (escaped) {
       path += escaped[1];
       continue;
     }

     var next = str[index];
     var prefix = res[2];
     var name = res[3];
     var capture = res[4];
     var group = res[5];
     var modifier = res[6];
     var asterisk = res[7];

     // Push the current path onto the tokens.
     if (path) {
       tokens.push(path);
       path = '';
     }

     var partial = prefix != null && next != null && next !== prefix;
     var repeat = modifier === '+' || modifier === '*';
     var optional = modifier === '?' || modifier === '*';
     var delimiter = res[2] || defaultDelimiter;
     var pattern = capture || group;

     tokens.push({
       name: name || key++,
       prefix: prefix || '',
       delimiter: delimiter,
       optional: optional,
       repeat: repeat,
       partial: partial,
       asterisk: !!asterisk,
       pattern: pattern ? escapeGroup(pattern) : asterisk ? '.*' : '[^' + escapeString(delimiter) + ']+?'
     });
   }

   // Match any characters still remaining.
   if (index < str.length) {
     path += str.substr(index);
   }

   // If the path exists, push it onto the end.
   if (path) {
     tokens.push(path);
   }

   return tokens;
 }

 /**
  * Compile a string to a template function for the path.
  *
  * @param  {string}             str
  * @param  {Object=}            options
  * @return {!function(Object=, Object=)}
  */
 function compile(str, options) {
   return tokensToFunction(parse(str, options));
 }

 /**
  * Prettier encoding of URI path segments.
  *
  * @param  {string}
  * @return {string}
  */
 function encodeURIComponentPretty(str) {
   return encodeURI(str).replace(/[\/?#]/g, function (c) {
     return '%' + c.charCodeAt(0).toString(16).toUpperCase();
   });
 }

 /**
  * Encode the asterisk parameter. Similar to `pretty`, but allows slashes.
  *
  * @param  {string}
  * @return {string}
  */
 function encodeAsterisk(str) {
   return encodeURI(str).replace(/[?#]/g, function (c) {
     return '%' + c.charCodeAt(0).toString(16).toUpperCase();
   });
 }

 /**
  * Expose a method for transforming tokens into the path function.
  */
 function tokensToFunction(tokens) {
   // Compile all the tokens into regexps.
   var matches = new Array(tokens.length);

   // Compile all the patterns before compilation.
   for (var i = 0; i < tokens.length; i++) {
     if (typeof tokens[i] === 'object') {
       matches[i] = new RegExp('^(?:' + tokens[i].pattern + ')$');
     }
   }

   return function (obj, opts) {
     var path = '';
     var data = obj || {};
     var options = opts || {};
     var encode = options.pretty ? encodeURIComponentPretty : encodeURIComponent;

     for (var i = 0; i < tokens.length; i++) {
       var token = tokens[i];

       if (typeof token === 'string') {
         path += token;

         continue;
       }

       var value = data[token.name];
       var segment;

       if (value == null) {
         if (token.optional) {
           // Prepend partial segment prefixes.
           if (token.partial) {
             path += token.prefix;
           }

           continue;
         } else {
           throw new TypeError('Expected "' + token.name + '" to be defined');
         }
       }

       if (isarray(value)) {
         if (!token.repeat) {
           throw new TypeError('Expected "' + token.name + '" to not repeat, but received `' + JSON.stringify(value) + '`');
         }

         if (value.length === 0) {
           if (token.optional) {
             continue;
           } else {
             throw new TypeError('Expected "' + token.name + '" to not be empty');
           }
         }

         for (var j = 0; j < value.length; j++) {
           segment = encode(value[j]);

           if (!matches[i].test(segment)) {
             throw new TypeError('Expected all "' + token.name + '" to match "' + token.pattern + '", but received `' + JSON.stringify(segment) + '`');
           }

           path += (j === 0 ? token.prefix : token.delimiter) + segment;
         }

         continue;
       }

       segment = token.asterisk ? encodeAsterisk(value) : encode(value);

       if (!matches[i].test(segment)) {
         throw new TypeError('Expected "' + token.name + '" to match "' + token.pattern + '", but received "' + segment + '"');
       }

       path += token.prefix + segment;
     }

     return path;
   };
 }

 /**
  * Escape a regular expression string.
  *
  * @param  {string} str
  * @return {string}
  */
 function escapeString(str) {
   return str.replace(/([.+*?=^!:${}()[\]|\/\\])/g, '\\$1');
 }

 /**
  * Escape the capturing group by escaping special characters and meaning.
  *
  * @param  {string} group
  * @return {string}
  */
 function escapeGroup(group) {
   return group.replace(/([=!:$\/()])/g, '\\$1');
 }

 /**
  * Attach the keys as a property of the regexp.
  *
  * @param  {!RegExp} re
  * @param  {Array}   keys
  * @return {!RegExp}
  */
 function attachKeys(re, keys) {
   re.keys = keys;
   return re;
 }

 /**
  * Get the flags for a regexp from the options.
  *
  * @param  {Object} options
  * @return {string}
  */
 function flags(options) {
   return options.sensitive ? '' : 'i';
 }

 /**
  * Pull out keys from a regexp.
  *
  * @param  {!RegExp} path
  * @param  {!Array}  keys
  * @return {!RegExp}
  */
 function regexpToRegexp(path, keys) {
   // Use a negative lookahead to match only capturing groups.
   var groups = path.source.match(/\((?!\?)/g);

   if (groups) {
     for (var i = 0; i < groups.length; i++) {
       keys.push({
         name: i,
         prefix: null,
         delimiter: null,
         optional: false,
         repeat: false,
         partial: false,
         asterisk: false,
         pattern: null
       });
     }
   }

   return attachKeys(path, keys);
 }

 /**
  * Transform an array into a regexp.
  *
  * @param  {!Array}  path
  * @param  {Array}   keys
  * @param  {!Object} options
  * @return {!RegExp}
  */
 function arrayToRegexp(path, keys, options) {
   var parts = [];

   for (var i = 0; i < path.length; i++) {
     parts.push(pathToRegexp(path[i], keys, options).source);
   }

   var regexp = new RegExp('(?:' + parts.join('|') + ')', flags(options));

   return attachKeys(regexp, keys);
 }

 /**
  * Create a path regexp from string input.
  *
  * @param  {string}  path
  * @param  {!Array}  keys
  * @param  {!Object} options
  * @return {!RegExp}
  */
 function stringToRegexp(path, keys, options) {
   return tokensToRegExp(parse(path, options), keys, options);
 }

 /**
  * Expose a function for taking tokens and returning a RegExp.
  *
  * @param  {!Array}          tokens
  * @param  {(Array|Object)=} keys
  * @param  {Object=}         options
  * @return {!RegExp}
  */
 function tokensToRegExp(tokens, keys, options) {
   if (!isarray(keys)) {
     options = /** @type {!Object} */keys || options;
     keys = [];
   }

   options = options || {};

   var strict = options.strict;
   var end = options.end !== false;
   var route = '';

   // Iterate over the tokens and create our regexp string.
   for (var i = 0; i < tokens.length; i++) {
     var token = tokens[i];

     if (typeof token === 'string') {
       route += escapeString(token);
     } else {
       var prefix = escapeString(token.prefix);
       var capture = '(?:' + token.pattern + ')';

       keys.push(token);

       if (token.repeat) {
         capture += '(?:' + prefix + capture + ')*';
       }

       if (token.optional) {
         if (!token.partial) {
           capture = '(?:' + prefix + '(' + capture + '))?';
         } else {
           capture = prefix + '(' + capture + ')?';
         }
       } else {
         capture = prefix + '(' + capture + ')';
       }

       route += capture;
     }
   }

   var delimiter = escapeString(options.delimiter || '/');
   var endsWithDelimiter = route.slice(-delimiter.length) === delimiter;

   // In non-strict mode we allow a slash at the end of match. If the path to
   // match already ends with a slash, we remove it for consistency. The slash
   // is valid at the end of a path match, not in the middle. This is important
   // in non-ending mode, where "/test/" shouldn't match "/test//route".
   if (!strict) {
     route = (endsWithDelimiter ? route.slice(0, -delimiter.length) : route) + '(?:' + delimiter + '(?=$))?';
   }

   if (end) {
     route += '$';
   } else {
     // In non-ending mode, we need the capturing groups to match as much as
     // possible by using a positive lookahead to the end or next path segment.
     route += strict && endsWithDelimiter ? '' : '(?=' + delimiter + '|$)';
   }

   return attachKeys(new RegExp('^' + route, flags(options)), keys);
 }

 /**
  * Normalize the given path string, returning a regular expression.
  *
  * An empty array can be passed in for the keys, which will hold the
  * placeholder key descriptions. For example, using `/user/:id`, `keys` will
  * contain `[{ name: 'id', delimiter: '/', optional: false, repeat: false }]`.
  *
  * @param  {(string|RegExp|Array)} path
  * @param  {(Array|Object)=}       keys
  * @param  {Object=}               options
  * @return {!RegExp}
  */
 function pathToRegexp(path, keys, options) {
   if (!isarray(keys)) {
     options = /** @type {!Object} */keys || options;
     keys = [];
   }

   options = options || {};

   if (path instanceof RegExp) {
     return regexpToRegexp(path, /** @type {!Array} */keys);
   }

   if (isarray(path)) {
     return arrayToRegexp( /** @type {!Array} */path, /** @type {!Array} */keys, options);
   }

   return stringToRegexp( /** @type {string} */path, /** @type {!Array} */keys, options);
 }
 pathToRegexp_1.parse = parse_1;
 pathToRegexp_1.compile = compile_1;
 pathToRegexp_1.tokensToFunction = tokensToFunction_1;
 pathToRegexp_1.tokensToRegExp = tokensToRegExp_1;

 var patternCache = {};
 var cacheLimit = 10000;
 var cacheCount = 0;

 var compilePath = function compilePath(pattern, options) {
   var cacheKey = "" + options.end + options.strict + options.sensitive;
   var cache = patternCache[cacheKey] || (patternCache[cacheKey] = {});

   if (cache[pattern]) return cache[pattern];

   var keys = [];
   var re = pathToRegexp_1(pattern, keys, options);
   var compiledPattern = { re: re, keys: keys };

   if (cacheCount < cacheLimit) {
     cache[pattern] = compiledPattern;
     cacheCount++;
   }

   return compiledPattern;
 };

 /**
  * Public API for matching a URL pathname to a path pattern.
  */
 var matchPath = function matchPath(pathname) {
   var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
   var parent = arguments[2];

   if (typeof options === "string") options = { path: options };

   var _options = options,
       path = _options.path,
       _options$exact = _options.exact,
       exact = _options$exact === undefined ? false : _options$exact,
       _options$strict = _options.strict,
       strict = _options$strict === undefined ? false : _options$strict,
       _options$sensitive = _options.sensitive,
       sensitive = _options$sensitive === undefined ? false : _options$sensitive;

   if (path == null) return parent;

   var _compilePath = compilePath(path, { end: exact, strict: strict, sensitive: sensitive }),
       re = _compilePath.re,
       keys = _compilePath.keys;

   var match = re.exec(pathname);

   if (!match) return null;

   var url = match[0],
       values = match.slice(1);

   var isExact = pathname === url;

   if (exact && !isExact) return null;

   return {
     path: path, // the path pattern used to match
     url: path === "/" && url === "" ? "/" : url, // the matched portion of the URL
     isExact: isExact, // whether or not we matched exactly
     params: keys.reduce(function (memo, key, index) {
       memo[key.name] = values[index];
       return memo;
     }, {})
   };
 };

 var _extends$6 = 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;
 };

 function _classCallCheck$2(instance, Constructor) {
   if (!(instance instanceof Constructor)) {
     throw new TypeError("Cannot call a class as a function");
   }
 }

 function _possibleConstructorReturn$2(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;
 }

 function _inherits$2(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 isEmptyChildren = function isEmptyChildren(children) {
   return React.Children.count(children) === 0;
 };

 /**
  * The public API for matching a single path and rendering.
  */

 var Route = function (_React$Component) {
   _inherits$2(Route, _React$Component);

   function Route() {
     var _temp, _this, _ret;

     _classCallCheck$2(this, Route);

     for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
       args[_key] = arguments[_key];
     }

     return _ret = (_temp = (_this = _possibleConstructorReturn$2(this, _React$Component.call.apply(_React$Component, [this].concat(args))), _this), _this.state = {
       match: _this.computeMatch(_this.props, _this.context.router)
     }, _temp), _possibleConstructorReturn$2(_this, _ret);
   }

   Route.prototype.getChildContext = function getChildContext() {
     return {
       router: _extends$6({}, this.context.router, {
         route: {
           location: this.props.location || this.context.router.route.location,
           match: this.state.match
         }
       })
     };
   };

   Route.prototype.computeMatch = function computeMatch(_ref, router) {
     var computedMatch = _ref.computedMatch,
         location = _ref.location,
         path = _ref.path,
         strict = _ref.strict,
         exact = _ref.exact,
         sensitive = _ref.sensitive;

     if (computedMatch) return computedMatch; // <Switch> already computed the match for us

     invariant_1$1(router, "You should not use <Route> or withRouter() outside a <Router>");

     var route = router.route;

     var pathname = (location || route.location).pathname;

     return matchPath(pathname, { path: path, strict: strict, exact: exact, sensitive: sensitive }, route.match);
   };

   Route.prototype.componentWillMount = function componentWillMount() {
     warning_1(!(this.props.component && this.props.render), "You should not use <Route component> and <Route render> in the same route; <Route render> will be ignored");

     warning_1(!(this.props.component && this.props.children && !isEmptyChildren(this.props.children)), "You should not use <Route component> and <Route children> in the same route; <Route children> will be ignored");

     warning_1(!(this.props.render && this.props.children && !isEmptyChildren(this.props.children)), "You should not use <Route render> and <Route children> in the same route; <Route children> will be ignored");
   };

   Route.prototype.componentWillReceiveProps = function componentWillReceiveProps(nextProps, nextContext) {
     warning_1(!(nextProps.location && !this.props.location), '<Route> elements should not change from uncontrolled to controlled (or vice versa). You initially used no "location" prop and then provided one on a subsequent render.');

     warning_1(!(!nextProps.location && this.props.location), '<Route> elements should not change from controlled to uncontrolled (or vice versa). You provided a "location" prop initially but omitted it on a subsequent render.');

     this.setState({
       match: this.computeMatch(nextProps, nextContext.router)
     });
   };

   Route.prototype.render = function render() {
     var match = this.state.match;
     var _props = this.props,
         children = _props.children,
         component = _props.component,
         render = _props.render;
     var _context$router = this.context.router,
         history = _context$router.history,
         route = _context$router.route,
         staticContext = _context$router.staticContext;

     var location = this.props.location || route.location;
     var props = { match: match, location: location, history: history, staticContext: staticContext };

     if (component) return match ? React.createElement(component, props) : null;

     if (render) return match ? render(props) : null;

     if (typeof children === "function") return children(props);

     if (children && !isEmptyChildren(children)) return React.Children.only(children);

     return null;
   };

   return Route;
 }(React.Component);

 Route.propTypes = {
   computedMatch: propTypes.object, // private, from <Switch>
   path: propTypes.string,
   exact: propTypes.bool,
   strict: propTypes.bool,
   sensitive: propTypes.bool,
   component: propTypes.func,
   render: propTypes.func,
   children: propTypes.oneOfType([propTypes.func, propTypes.node]),
   location: propTypes.object
 };
 Route.contextTypes = {
   router: propTypes.shape({
     history: propTypes.object.isRequired,
     route: propTypes.object.isRequired,
     staticContext: propTypes.object
   })
 };
 Route.childContextTypes = {
   router: propTypes.object.isRequired
 };

 // Written in this round about way for babel-transform-imports

 /**
  * A <Link> wrapper that knows if it's "active" or not.
  */
 var NavLink = function NavLink(_ref) {
   var to = _ref.to,
       exact = _ref.exact,
       strict = _ref.strict,
       location = _ref.location,
       activeClassName = _ref.activeClassName,
       className = _ref.className,
       activeStyle = _ref.activeStyle,
       style = _ref.style,
       getIsActive = _ref.isActive,
       ariaCurrent = _ref["aria-current"],
       rest = objectWithoutProperties(_ref, ["to", "exact", "strict", "location", "activeClassName", "className", "activeStyle", "style", "isActive", "aria-current"]);

   var path = (typeof to === "undefined" ? "undefined" : _typeof$3(to)) === "object" ? to.pathname : to;

   // Regex taken from: https://github.com/pillarjs/path-to-regexp/blob/master/index.js#L202
   var escapedPath = path && path.replace(/([.+*?=^!:${}()[\]|/\\])/g, "\\$1");

   return React.createElement(Route, {
     path: escapedPath,
     exact: exact,
     strict: strict,
     location: location,
     children: function children(_ref2) {
       var location = _ref2.location,
           match = _ref2.match;

       var isActive = !!(getIsActive ? getIsActive(match, location) : match);

       return React.createElement(Link, _extends$5({
         to: to,
         className: isActive ? [className, activeClassName].filter(function (i) {
           return i;
         }).join(" ") : className,
         style: isActive ? _extends$5({}, style, activeStyle) : style,
         "aria-current": isActive && ariaCurrent || null
       }, rest));
     }
   });
 };

 NavLink.propTypes = {
   to: Link.propTypes.to,
   exact: propTypes.bool,
   strict: propTypes.bool,
   location: propTypes.object,
   activeClassName: propTypes.string,
   className: propTypes.string,
   activeStyle: propTypes.object,
   style: propTypes.object,
   isActive: propTypes.func,
   "aria-current": propTypes.oneOf(["page", "step", "location", "date", "time", "true"])
 };

 NavLink.defaultProps = {
   activeClassName: "active",
   "aria-current": "page"
 };

 function _classCallCheck$3(instance, Constructor) {
   if (!(instance instanceof Constructor)) {
     throw new TypeError("Cannot call a class as a function");
   }
 }

 function _possibleConstructorReturn$3(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;
 }

 function _inherits$3(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;
 }

 /**
  * The public API for prompting the user before navigating away
  * from a screen with a component.
  */

 var Prompt = function (_React$Component) {
   _inherits$3(Prompt, _React$Component);

   function Prompt() {
     _classCallCheck$3(this, Prompt);

     return _possibleConstructorReturn$3(this, _React$Component.apply(this, arguments));
   }

   Prompt.prototype.enable = function enable(message) {
     if (this.unblock) this.unblock();

     this.unblock = this.context.router.history.block(message);
   };

   Prompt.prototype.disable = function disable() {
     if (this.unblock) {
       this.unblock();
       this.unblock = null;
     }
   };

   Prompt.prototype.componentWillMount = function componentWillMount() {
     invariant_1$1(this.context.router, "You should not use <Prompt> outside a <Router>");

     if (this.props.when) this.enable(this.props.message);
   };

   Prompt.prototype.componentWillReceiveProps = function componentWillReceiveProps(nextProps) {
     if (nextProps.when) {
       if (!this.props.when || this.props.message !== nextProps.message) this.enable(nextProps.message);
     } else {
       this.disable();
     }
   };

   Prompt.prototype.componentWillUnmount = function componentWillUnmount() {
     this.disable();
   };

   Prompt.prototype.render = function render() {
     return null;
   };

   return Prompt;
 }(React.Component);

 Prompt.propTypes = {
   when: propTypes.bool,
   message: propTypes.oneOfType([propTypes.func, propTypes.string]).isRequired
 };
 Prompt.defaultProps = {
   when: true
 };
 Prompt.contextTypes = {
   router: propTypes.shape({
     history: propTypes.shape({
       block: propTypes.func.isRequired
     }).isRequired
   }).isRequired
 };

 // Written in this round about way for babel-transform-imports

 var patternCache$1 = {};
 var cacheLimit$1 = 10000;
 var cacheCount$1 = 0;

 var compileGenerator = function compileGenerator(pattern) {
   var cacheKey = pattern;
   var cache = patternCache$1[cacheKey] || (patternCache$1[cacheKey] = {});

   if (cache[pattern]) return cache[pattern];

   var compiledGenerator = pathToRegexp_1.compile(pattern);

   if (cacheCount$1 < cacheLimit$1) {
     cache[pattern] = compiledGenerator;
     cacheCount$1++;
   }

   return compiledGenerator;
 };

 /**
  * Public API for generating a URL pathname from a pattern and parameters.
  */
 var generatePath = function generatePath() {
   var pattern = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : "/";
   var params = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

   if (pattern === "/") {
     return pattern;
   }
   var generator = compileGenerator(pattern);
   return generator(params, { pretty: true });
 };

 var _extends$7 = 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;
 };

 function _classCallCheck$4(instance, Constructor) {
   if (!(instance instanceof Constructor)) {
     throw new TypeError("Cannot call a class as a function");
   }
 }

 function _possibleConstructorReturn$4(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;
 }

 function _inherits$4(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;
 }

 /**
  * The public API for updating the location programmatically
  * with a component.
  */

 var Redirect = function (_React$Component) {
   _inherits$4(Redirect, _React$Component);

   function Redirect() {
     _classCallCheck$4(this, Redirect);

     return _possibleConstructorReturn$4(this, _React$Component.apply(this, arguments));
   }

   Redirect.prototype.isStatic = function isStatic() {
     return this.context.router && this.context.router.staticContext;
   };

   Redirect.prototype.componentWillMount = function componentWillMount() {
     invariant_1$1(this.context.router, "You should not use <Redirect> outside a <Router>");

     if (this.isStatic()) this.perform();
   };

   Redirect.prototype.componentDidMount = function componentDidMount() {
     if (!this.isStatic()) this.perform();
   };

   Redirect.prototype.componentDidUpdate = function componentDidUpdate(prevProps) {
     var prevTo = createLocation(prevProps.to);
     var nextTo = createLocation(this.props.to);

     if (locationsAreEqual(prevTo, nextTo)) {
       warning_1(false, "You tried to redirect to the same route you're currently on: " + ("\"" + nextTo.pathname + nextTo.search + "\""));
       return;
     }

     this.perform();
   };

   Redirect.prototype.computeTo = function computeTo(_ref) {
     var computedMatch = _ref.computedMatch,
         to = _ref.to;

     if (computedMatch) {
       if (typeof to === "string") {
         return generatePath(to, computedMatch.params);
       } else {
         return _extends$7({}, to, {
           pathname: generatePath(to.pathname, computedMatch.params)
         });
       }
     }

     return to;
   };

   Redirect.prototype.perform = function perform() {
     var history = this.context.router.history;
     var push = this.props.push;

     var to = this.computeTo(this.props);

     if (push) {
       history.push(to);
     } else {
       history.replace(to);
     }
   };

   Redirect.prototype.render = function render() {
     return null;
   };

   return Redirect;
 }(React.Component);

 Redirect.propTypes = {
   computedMatch: propTypes.object, // private, from <Switch>
   push: propTypes.bool,
   from: propTypes.string,
   to: propTypes.oneOfType([propTypes.string, propTypes.object]).isRequired
 };
 Redirect.defaultProps = {
   push: false
 };
 Redirect.contextTypes = {
   router: propTypes.shape({
     history: propTypes.shape({
       push: propTypes.func.isRequired,
       replace: propTypes.func.isRequired
     }).isRequired,
     staticContext: propTypes.object
   }).isRequired
 };

 // Written in this round about way for babel-transform-imports

 var _extends$8 = 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;
 };

 function _objectWithoutProperties(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;
 }

 function _classCallCheck$5(instance, Constructor) {
   if (!(instance instanceof Constructor)) {
     throw new TypeError("Cannot call a class as a function");
   }
 }

 function _possibleConstructorReturn$5(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;
 }

 function _inherits$5(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 addLeadingSlash$1 = function addLeadingSlash(path) {
   return path.charAt(0) === "/" ? path : "/" + path;
 };

 var addBasename = function addBasename(basename, location) {
   if (!basename) return location;

   return _extends$8({}, location, {
     pathname: addLeadingSlash$1(basename) + location.pathname
   });
 };

 var stripBasename$1 = function stripBasename(basename, location) {
   if (!basename) return location;

   var base = addLeadingSlash$1(basename);

   if (location.pathname.indexOf(base) !== 0) return location;

   return _extends$8({}, location, {
     pathname: location.pathname.substr(base.length)
   });
 };

 var createURL = function createURL(location) {
   return typeof location === "string" ? location : createPath(location);
 };

 var staticHandler = function staticHandler(methodName) {
   return function () {
     invariant_1$1(false, "You cannot %s with <StaticRouter>", methodName);
   };
 };

 var noop = function noop() {};

 /**
  * The public top-level API for a "static" <Router>, so-called because it
  * can't actually change the current location. Instead, it just records
  * location changes in a context object. Useful mainly in testing and
  * server-rendering scenarios.
  */

 var StaticRouter = function (_React$Component) {
   _inherits$5(StaticRouter, _React$Component);

   function StaticRouter() {
     var _temp, _this, _ret;

     _classCallCheck$5(this, StaticRouter);

     for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
       args[_key] = arguments[_key];
     }

     return _ret = (_temp = (_this = _possibleConstructorReturn$5(this, _React$Component.call.apply(_React$Component, [this].concat(args))), _this), _this.createHref = function (path) {
       return addLeadingSlash$1(_this.props.basename + createURL(path));
     }, _this.handlePush = function (location) {
       var _this$props = _this.props,
           basename = _this$props.basename,
           context = _this$props.context;

       context.action = "PUSH";
       context.location = addBasename(basename, createLocation(location));
       context.url = createURL(context.location);
     }, _this.handleReplace = function (location) {
       var _this$props2 = _this.props,
           basename = _this$props2.basename,
           context = _this$props2.context;

       context.action = "REPLACE";
       context.location = addBasename(basename, createLocation(location));
       context.url = createURL(context.location);
     }, _this.handleListen = function () {
       return noop;
     }, _this.handleBlock = function () {
       return noop;
     }, _temp), _possibleConstructorReturn$5(_this, _ret);
   }

   StaticRouter.prototype.getChildContext = function getChildContext() {
     return {
       router: {
         staticContext: this.props.context
       }
     };
   };

   StaticRouter.prototype.componentWillMount = function componentWillMount() {
     warning_1(!this.props.history, "<StaticRouter> ignores the history prop. To use a custom history, " + "use `import { Router }` instead of `import { StaticRouter as Router }`.");
   };

   StaticRouter.prototype.render = function render() {
     var _props = this.props,
         basename = _props.basename,
         context = _props.context,
         location = _props.location,
         props = _objectWithoutProperties(_props, ["basename", "context", "location"]);

     var history = {
       createHref: this.createHref,
       action: "POP",
       location: stripBasename$1(basename, createLocation(location)),
       push: this.handlePush,
       replace: this.handleReplace,
       go: staticHandler("go"),
       goBack: staticHandler("goBack"),
       goForward: staticHandler("goForward"),
       listen: this.handleListen,
       block: this.handleBlock
     };

     return React.createElement(Router, _extends$8({}, props, { history: history }));
   };

   return StaticRouter;
 }(React.Component);

 StaticRouter.propTypes = {
   basename: propTypes.string,
   context: propTypes.object.isRequired,
   location: propTypes.oneOfType([propTypes.string, propTypes.object])
 };
 StaticRouter.defaultProps = {
   basename: "",
   location: "/"
 };
 StaticRouter.childContextTypes = {
   router: propTypes.object.isRequired
 };

 // Written in this round about way for babel-transform-imports

 function _classCallCheck$6(instance, Constructor) {
   if (!(instance instanceof Constructor)) {
     throw new TypeError("Cannot call a class as a function");
   }
 }

 function _possibleConstructorReturn$6(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;
 }

 function _inherits$6(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;
 }

 /**
  * The public API for rendering the first <Route> that matches.
  */

 var Switch = function (_React$Component) {
   _inherits$6(Switch, _React$Component);

   function Switch() {
     _classCallCheck$6(this, Switch);

     return _possibleConstructorReturn$6(this, _React$Component.apply(this, arguments));
   }

   Switch.prototype.componentWillMount = function componentWillMount() {
     invariant_1$1(this.context.router, "You should not use <Switch> outside a <Router>");
   };

   Switch.prototype.componentWillReceiveProps = function componentWillReceiveProps(nextProps) {
     warning_1(!(nextProps.location && !this.props.location), '<Switch> elements should not change from uncontrolled to controlled (or vice versa). You initially used no "location" prop and then provided one on a subsequent render.');

     warning_1(!(!nextProps.location && this.props.location), '<Switch> elements should not change from controlled to uncontrolled (or vice versa). You provided a "location" prop initially but omitted it on a subsequent render.');
   };

   Switch.prototype.render = function render() {
     var route = this.context.router.route;
     var children = this.props.children;

     var location = this.props.location || route.location;

     var match = void 0,
         child = void 0;
     React.Children.forEach(children, function (element) {
       if (match == null && React.isValidElement(element)) {
         var _element$props = element.props,
             pathProp = _element$props.path,
             exact = _element$props.exact,
             strict = _element$props.strict,
             sensitive = _element$props.sensitive,
             from = _element$props.from;

         var path = pathProp || from;

         child = element;
         match = matchPath(location.pathname, { path: path, exact: exact, strict: strict, sensitive: sensitive }, route.match);
       }
     });

     return match ? React.cloneElement(child, { location: location, computedMatch: match }) : null;
   };

   return Switch;
 }(React.Component);

 Switch.contextTypes = {
   router: propTypes.shape({
     route: propTypes.object.isRequired
   }).isRequired
 };
 Switch.propTypes = {
   children: propTypes.node,
   location: propTypes.object
 };

 // Written in this round about way for babel-transform-imports

 // Written in this round about way for babel-transform-imports

 // Written in this round about way for babel-transform-imports

 var hoistNonReactStatics = createCommonjsModule(function (module, exports) {
 /**
  * Copyright 2015, Yahoo! Inc.
  * Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
  */
 (function (global, factory) {
     module.exports = factory();
 })(commonjsGlobal, function () {

     var REACT_STATICS = {
         childContextTypes: true,
         contextTypes: true,
         defaultProps: true,
         displayName: true,
         getDefaultProps: true,
         getDerivedStateFromProps: true,
         mixins: true,
         propTypes: true,
         type: true
     };

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

     var defineProperty = Object.defineProperty;
     var getOwnPropertyNames = Object.getOwnPropertyNames;
     var getOwnPropertySymbols = Object.getOwnPropertySymbols;
     var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
     var getPrototypeOf = Object.getPrototypeOf;
     var objectPrototype = getPrototypeOf && getPrototypeOf(Object);

     return function hoistNonReactStatics(targetComponent, sourceComponent, blacklist) {
         if (typeof sourceComponent !== 'string') {
             // don't hoist over string (html) components

             if (objectPrototype) {
                 var inheritedComponent = getPrototypeOf(sourceComponent);
                 if (inheritedComponent && inheritedComponent !== objectPrototype) {
                     hoistNonReactStatics(targetComponent, inheritedComponent, blacklist);
                 }
             }

             var keys = getOwnPropertyNames(sourceComponent);

             if (getOwnPropertySymbols) {
                 keys = keys.concat(getOwnPropertySymbols(sourceComponent));
             }

             for (var i = 0; i < keys.length; ++i) {
                 var key = keys[i];
                 if (!REACT_STATICS[key] && !KNOWN_STATICS[key] && (!blacklist || !blacklist[key])) {
                     var descriptor = getOwnPropertyDescriptor(sourceComponent, key);
                     try {
                         // Avoid failures from read-only properties
                         defineProperty(targetComponent, key, descriptor);
                     } catch (e) {}
                 }
             }

             return targetComponent;
         }

         return targetComponent;
     };
 });
 });

 var _extends$9 = 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;
 };

 function _objectWithoutProperties$1(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;
 }

 /**
  * A public higher-order component to access the imperative API
  */
 var withRouter = function withRouter(Component) {
   var C = function C(props) {
     var wrappedComponentRef = props.wrappedComponentRef,
         remainingProps = _objectWithoutProperties$1(props, ["wrappedComponentRef"]);

     return React.createElement(Route, {
       children: function children(routeComponentProps) {
         return React.createElement(Component, _extends$9({}, remainingProps, routeComponentProps, {
           ref: wrappedComponentRef
         }));
       }
     });
   };

   C.displayName = "withRouter(" + (Component.displayName || Component.name) + ")";
   C.WrappedComponent = Component;
   C.propTypes = {
     wrappedComponentRef: propTypes.func
   };

   return hoistNonReactStatics(C, Component);
 };

 // Written in this round about way for babel-transform-imports

 exports.BrowserRouter = BrowserRouter;
 exports.HashRouter = HashRouter;
 exports.Link = Link;
 exports.MemoryRouter = MemoryRouter;
 exports.NavLink = NavLink;
 exports.Prompt = Prompt;
 exports.Redirect = Redirect;
 exports.Route = Route;
 exports.Router = Router;
 exports.StaticRouter = StaticRouter;
 exports.Switch = Switch;
 exports.generatePath = generatePath;
 exports.matchPath = matchPath;
 exports.withRouter = withRouter;

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

})));