diff --git a/example/dist/bundle.js b/example/dist/bundle.js
index 5c2b024..194fc9b 100644
--- a/example/dist/bundle.js
+++ b/example/dist/bundle.js
@@ -1,5 +1,4 @@
 require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
-(function (process){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -17,7 +16,7 @@ var _assign = require('object-assign');
 var emptyObject = require('fbjs/lib/emptyObject');
 var _invariant = require('fbjs/lib/invariant');
 
-if (process.env.NODE_ENV !== 'production') {
+if ("production" !== 'production') {
   var warning = require('fbjs/lib/warning');
 }
 
@@ -30,7 +29,7 @@ function identity(fn) {
 }
 
 var ReactPropTypeLocationNames;
-if (process.env.NODE_ENV !== 'production') {
+if ("production" !== 'production') {
   ReactPropTypeLocationNames = {
     prop: 'prop',
     context: 'context',
@@ -314,13 +313,13 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       }
     },
     childContextTypes: function (Constructor, childContextTypes) {
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         validateTypeDef(Constructor, childContextTypes, 'childContext');
       }
       Constructor.childContextTypes = _assign({}, Constructor.childContextTypes, childContextTypes);
     },
     contextTypes: function (Constructor, contextTypes) {
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         validateTypeDef(Constructor, contextTypes, 'context');
       }
       Constructor.contextTypes = _assign({}, Constructor.contextTypes, contextTypes);
@@ -337,7 +336,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       }
     },
     propTypes: function (Constructor, propTypes) {
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         validateTypeDef(Constructor, propTypes, 'prop');
       }
       Constructor.propTypes = _assign({}, Constructor.propTypes, propTypes);
@@ -352,7 +351,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       if (typeDef.hasOwnProperty(propName)) {
         // use a warning instead of an _invariant so components
         // don't show up in prod but only in __DEV__
-        process.env.NODE_ENV !== 'production' ? warning(typeof typeDef[propName] === 'function', '%s: %s type `%s` is invalid; it must be a function, usually from ' + 'React.PropTypes.', Constructor.displayName || 'ReactClass', ReactPropTypeLocationNames[location], propName) : void 0;
+        "production" !== 'production' ? warning(typeof typeDef[propName] === 'function', '%s: %s type `%s` is invalid; it must be a function, usually from ' + 'React.PropTypes.', Constructor.displayName || 'ReactClass', ReactPropTypeLocationNames[location], propName) : void 0;
       }
     }
   }
@@ -377,11 +376,11 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
    */
   function mixSpecIntoComponent(Constructor, spec) {
     if (!spec) {
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         var typeofSpec = typeof spec;
         var isMixinValid = typeofSpec === 'object' && spec !== null;
 
-        process.env.NODE_ENV !== 'production' ? warning(isMixinValid, '%s: You\'re attempting to include a mixin that is either null ' + 'or not an object. Check the mixins included by the component, ' + 'as well as any mixins they include themselves. ' + 'Expected object but got %s.', Constructor.displayName || 'ReactClass', spec === null ? null : typeofSpec) : void 0;
+        "production" !== 'production' ? warning(isMixinValid, '%s: You\'re attempting to include a mixin that is either null ' + 'or not an object. Check the mixins included by the component, ' + 'as well as any mixins they include themselves. ' + 'Expected object but got %s.', Constructor.displayName || 'ReactClass', spec === null ? null : typeofSpec) : void 0;
       }
 
       return;
@@ -444,7 +443,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
             }
           } else {
             proto[name] = property;
-            if (process.env.NODE_ENV !== 'production') {
+            if ("production" !== 'production') {
               // Add verbose displayName to the function, which helps when looking
               // at profiling tools.
               if (typeof property === 'function' && spec.displayName) {
@@ -543,7 +542,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
    */
   function bindAutoBindMethod(component, method) {
     var boundMethod = method.bind(component);
-    if (process.env.NODE_ENV !== 'production') {
+    if ("production" !== 'production') {
       boundMethod.__reactBoundContext = component;
       boundMethod.__reactBoundMethod = method;
       boundMethod.__reactBoundArguments = null;
@@ -558,9 +557,9 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
         // ignore the value of "this" that the user is trying to use, so
         // let's warn.
         if (newThis !== component && newThis !== null) {
-          process.env.NODE_ENV !== 'production' ? warning(false, 'bind(): React component methods may only be bound to the ' + 'component instance. See %s', componentName) : void 0;
+          "production" !== 'production' ? warning(false, 'bind(): React component methods may only be bound to the ' + 'component instance. See %s', componentName) : void 0;
         } else if (!args.length) {
-          process.env.NODE_ENV !== 'production' ? warning(false, 'bind(): You are binding a component method to the component. ' + 'React does this for you automatically in a high-performance ' + 'way, so you can safely remove this call. See %s', componentName) : void 0;
+          "production" !== 'production' ? warning(false, 'bind(): You are binding a component method to the component. ' + 'React does this for you automatically in a high-performance ' + 'way, so you can safely remove this call. See %s', componentName) : void 0;
           return boundMethod;
         }
         var reboundMethod = _bind.apply(boundMethod, arguments);
@@ -617,8 +616,8 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
      * @final
      */
     isMounted: function () {
-      if (process.env.NODE_ENV !== 'production') {
-        process.env.NODE_ENV !== 'production' ? warning(this.__didWarnIsMounted, '%s: isMounted is deprecated. Instead, make sure to clean up ' + 'subscriptions and pending requests in componentWillUnmount to ' + 'prevent memory leaks.', this.constructor && this.constructor.displayName || this.name || 'Component') : void 0;
+      if ("production" !== 'production') {
+        "production" !== 'production' ? warning(this.__didWarnIsMounted, '%s: isMounted is deprecated. Instead, make sure to clean up ' + 'subscriptions and pending requests in componentWillUnmount to ' + 'prevent memory leaks.', this.constructor && this.constructor.displayName || this.name || 'Component') : void 0;
         this.__didWarnIsMounted = true;
       }
       return !!this.__isMounted;
@@ -644,8 +643,8 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       // This constructor gets overridden by mocks. The argument is used
       // by mocks to assert on what gets mounted.
 
-      if (process.env.NODE_ENV !== 'production') {
-        process.env.NODE_ENV !== 'production' ? warning(this instanceof Constructor, 'Something is calling a React component directly. Use a factory or ' + 'JSX instead. See: https://fb.me/react-legacyfactory') : void 0;
+      if ("production" !== 'production') {
+        "production" !== 'production' ? warning(this instanceof Constructor, 'Something is calling a React component directly. Use a factory or ' + 'JSX instead. See: https://fb.me/react-legacyfactory') : void 0;
       }
 
       // Wire up auto-binding
@@ -664,7 +663,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       // getInitialState and componentWillMount methods for initialization.
 
       var initialState = this.getInitialState ? this.getInitialState() : null;
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         // We allow auto-mocks to proceed as if they're returning null.
         if (initialState === undefined && this.getInitialState._isMockFunction) {
           // This is probably bad practice. Consider warning here and
@@ -690,7 +689,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       Constructor.defaultProps = Constructor.getDefaultProps();
     }
 
-    if (process.env.NODE_ENV !== 'production') {
+    if ("production" !== 'production') {
       // This is a tag to indicate that the use of these method names is ok,
       // since it's used with createClass. If it's not, then it's likely a
       // mistake so we'll warn you to use the static property, property
@@ -705,9 +704,9 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
 
     _invariant(Constructor.prototype.render, 'createClass(...): Class specification must implement a `render` method.');
 
-    if (process.env.NODE_ENV !== 'production') {
-      process.env.NODE_ENV !== 'production' ? warning(!Constructor.prototype.componentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', spec.displayName || 'A component') : void 0;
-      process.env.NODE_ENV !== 'production' ? warning(!Constructor.prototype.componentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', spec.displayName || 'A component') : void 0;
+    if ("production" !== 'production') {
+      "production" !== 'production' ? warning(!Constructor.prototype.componentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', spec.displayName || 'A component') : void 0;
+      "production" !== 'production' ? warning(!Constructor.prototype.componentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', spec.displayName || 'A component') : void 0;
     }
 
     // Reduce time spent doing lookups by setting these on the prototype.
@@ -725,8 +724,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
 
 module.exports = factory;
 
-}).call(this,require('_process'))
-},{"_process":8,"fbjs/lib/emptyObject":4,"fbjs/lib/invariant":5,"fbjs/lib/warning":6,"object-assign":7}],2:[function(require,module,exports){
+},{"fbjs/lib/emptyObject":4,"fbjs/lib/invariant":5,"fbjs/lib/warning":6,"object-assign":7}],2:[function(require,module,exports){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -1026,193 +1024,6 @@ module.exports = shouldUseNative() ? Object.assign : function (target, source) {
 };
 
 },{}],8:[function(require,module,exports){
-// shim for using process in browser
-var process = module.exports = {};
-
-// cached from whatever global is present so that test runners that stub it
-// don't break things.  But we need to wrap it in a try catch in case it is
-// wrapped in strict mode code which doesn't define any globals.  It's inside a
-// function because try/catches deoptimize in certain engines.
-
-var cachedSetTimeout;
-var cachedClearTimeout;
-
-function defaultSetTimout() {
-    throw new Error('setTimeout has not been defined');
-}
-function defaultClearTimeout () {
-    throw new Error('clearTimeout has not been defined');
-}
-(function () {
-    try {
-        if (typeof setTimeout === 'function') {
-            cachedSetTimeout = setTimeout;
-        } else {
-            cachedSetTimeout = defaultSetTimout;
-        }
-    } catch (e) {
-        cachedSetTimeout = defaultSetTimout;
-    }
-    try {
-        if (typeof clearTimeout === 'function') {
-            cachedClearTimeout = clearTimeout;
-        } else {
-            cachedClearTimeout = defaultClearTimeout;
-        }
-    } catch (e) {
-        cachedClearTimeout = defaultClearTimeout;
-    }
-} ())
-function runTimeout(fun) {
-    if (cachedSetTimeout === setTimeout) {
-        //normal enviroments in sane situations
-        return setTimeout(fun, 0);
-    }
-    // if setTimeout wasn't available but was latter defined
-    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
-        cachedSetTimeout = setTimeout;
-        return setTimeout(fun, 0);
-    }
-    try {
-        // when when somebody has screwed with setTimeout but no I.E. maddness
-        return cachedSetTimeout(fun, 0);
-    } catch(e){
-        try {
-            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
-            return cachedSetTimeout.call(null, fun, 0);
-        } catch(e){
-            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
-            return cachedSetTimeout.call(this, fun, 0);
-        }
-    }
-
-
-}
-function runClearTimeout(marker) {
-    if (cachedClearTimeout === clearTimeout) {
-        //normal enviroments in sane situations
-        return clearTimeout(marker);
-    }
-    // if clearTimeout wasn't available but was latter defined
-    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
-        cachedClearTimeout = clearTimeout;
-        return clearTimeout(marker);
-    }
-    try {
-        // when when somebody has screwed with setTimeout but no I.E. maddness
-        return cachedClearTimeout(marker);
-    } catch (e){
-        try {
-            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
-            return cachedClearTimeout.call(null, marker);
-        } catch (e){
-            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
-            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
-            return cachedClearTimeout.call(this, marker);
-        }
-    }
-
-
-
-}
-var queue = [];
-var draining = false;
-var currentQueue;
-var queueIndex = -1;
-
-function cleanUpNextTick() {
-    if (!draining || !currentQueue) {
-        return;
-    }
-    draining = false;
-    if (currentQueue.length) {
-        queue = currentQueue.concat(queue);
-    } else {
-        queueIndex = -1;
-    }
-    if (queue.length) {
-        drainQueue();
-    }
-}
-
-function drainQueue() {
-    if (draining) {
-        return;
-    }
-    var timeout = runTimeout(cleanUpNextTick);
-    draining = true;
-
-    var len = queue.length;
-    while(len) {
-        currentQueue = queue;
-        queue = [];
-        while (++queueIndex < len) {
-            if (currentQueue) {
-                currentQueue[queueIndex].run();
-            }
-        }
-        queueIndex = -1;
-        len = queue.length;
-    }
-    currentQueue = null;
-    draining = false;
-    runClearTimeout(timeout);
-}
-
-process.nextTick = function (fun) {
-    var args = new Array(arguments.length - 1);
-    if (arguments.length > 1) {
-        for (var i = 1; i < arguments.length; i++) {
-            args[i - 1] = arguments[i];
-        }
-    }
-    queue.push(new Item(fun, args));
-    if (queue.length === 1 && !draining) {
-        runTimeout(drainQueue);
-    }
-};
-
-// v8 likes predictible objects
-function Item(fun, array) {
-    this.fun = fun;
-    this.array = array;
-}
-Item.prototype.run = function () {
-    this.fun.apply(null, this.array);
-};
-process.title = 'browser';
-process.browser = true;
-process.env = {};
-process.argv = [];
-process.version = ''; // empty string to avoid regexp issues
-process.versions = {};
-
-function noop() {}
-
-process.on = noop;
-process.addListener = noop;
-process.once = noop;
-process.off = noop;
-process.removeListener = noop;
-process.removeAllListeners = noop;
-process.emit = noop;
-process.prependListener = noop;
-process.prependOnceListener = noop;
-
-process.listeners = function (name) { return [] }
-
-process.binding = function (name) {
-    throw new Error('process.binding is not supported');
-};
-
-process.cwd = function () { return '/' };
-process.chdir = function (dir) {
-    throw new Error('process.chdir is not supported');
-};
-process.umask = function() { return 0; };
-
-},{}],9:[function(require,module,exports){
-(function (process){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -1224,7 +1035,7 @@ process.umask = function() { return 0; };
 
 'use strict';
 
-if (process.env.NODE_ENV !== 'production') {
+if ("production" !== 'production') {
   var invariant = require('fbjs/lib/invariant');
   var warning = require('fbjs/lib/warning');
   var ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');
@@ -1243,7 +1054,7 @@ if (process.env.NODE_ENV !== 'production') {
  * @private
  */
 function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
-  if (process.env.NODE_ENV !== 'production') {
+  if ("production" !== 'production') {
     for (var typeSpecName in typeSpecs) {
       if (typeSpecs.hasOwnProperty(typeSpecName)) {
         var error;
@@ -1275,8 +1086,7 @@ function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
 
 module.exports = checkPropTypes;
 
-}).call(this,require('_process'))
-},{"./lib/ReactPropTypesSecret":13,"_process":8,"fbjs/lib/invariant":5,"fbjs/lib/warning":6}],10:[function(require,module,exports){
+},{"./lib/ReactPropTypesSecret":12,"fbjs/lib/invariant":5,"fbjs/lib/warning":6}],9:[function(require,module,exports){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -1290,11 +1100,14 @@ module.exports = checkPropTypes;
 
 var emptyFunction = require('fbjs/lib/emptyFunction');
 var invariant = require('fbjs/lib/invariant');
+var ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');
 
 module.exports = function() {
-  // Important!
-  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.
-  function shim() {
+  function shim(props, propName, componentName, location, propFullName, secret) {
+    if (secret === ReactPropTypesSecret) {
+      // It is still safe when called from React.
+      return;
+    }
     invariant(
       false,
       'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +
@@ -1306,6 +1119,8 @@ module.exports = function() {
   function getShim() {
     return shim;
   };
+  // Important!
+  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.
   var ReactPropTypes = {
     array: shim,
     bool: shim,
@@ -1332,8 +1147,7 @@ module.exports = function() {
   return ReactPropTypes;
 };
 
-},{"fbjs/lib/emptyFunction":3,"fbjs/lib/invariant":5}],11:[function(require,module,exports){
-(function (process){
+},{"./lib/ReactPropTypesSecret":12,"fbjs/lib/emptyFunction":3,"fbjs/lib/invariant":5}],10:[function(require,module,exports){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -1482,7 +1296,7 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
   PropTypeError.prototype = Error.prototype;
 
   function createChainableTypeChecker(validate) {
-    if (process.env.NODE_ENV !== 'production') {
+    if ("production" !== 'production') {
       var manualPropTypeCallCache = {};
       var manualPropTypeWarningCount = 0;
     }
@@ -1499,7 +1313,7 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
             'Use `PropTypes.checkPropTypes()` to call them. ' +
             'Read more at http://fb.me/use-check-prop-types'
           );
-        } else if (process.env.NODE_ENV !== 'production' && typeof console !== 'undefined') {
+        } else if ("production" !== 'production' && typeof console !== 'undefined') {
           // Old behavior for people using React.PropTypes
           var cacheKey = componentName + ':' + propName;
           if (
@@ -1609,7 +1423,7 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
 
   function createEnumTypeChecker(expectedValues) {
     if (!Array.isArray(expectedValues)) {
-      process.env.NODE_ENV !== 'production' ? warning(false, 'Invalid argument supplied to oneOf, expected an instance of array.') : void 0;
+      "production" !== 'production' ? warning(false, 'Invalid argument supplied to oneOf, expected an instance of array.') : void 0;
       return emptyFunction.thatReturnsNull;
     }
 
@@ -1652,10 +1466,24 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
 
   function createUnionTypeChecker(arrayOfTypeCheckers) {
     if (!Array.isArray(arrayOfTypeCheckers)) {
-      process.env.NODE_ENV !== 'production' ? warning(false, 'Invalid argument supplied to oneOfType, expected an instance of array.') : void 0;
+      "production" !== 'production' ? warning(false, 'Invalid argument supplied to oneOfType, expected an instance of array.') : void 0;
       return emptyFunction.thatReturnsNull;
     }
 
+    for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
+      var checker = arrayOfTypeCheckers[i];
+      if (typeof checker !== 'function') {
+        warning(
+          false,
+          'Invalid argument supplid to oneOfType. Expected an array of check functions, but ' +
+          'received %s at index %s.',
+          getPostfixForTypeWarning(checker),
+          i
+        );
+        return emptyFunction.thatReturnsNull;
+      }
+    }
+
     function validate(props, propName, componentName, location, propFullName) {
       for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
         var checker = arrayOfTypeCheckers[i];
@@ -1788,6 +1616,9 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
   // 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) {
@@ -1799,6 +1630,23 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
     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) {
@@ -1813,9 +1661,7 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
   return ReactPropTypes;
 };
 
-}).call(this,require('_process'))
-},{"./checkPropTypes":9,"./lib/ReactPropTypesSecret":13,"_process":8,"fbjs/lib/emptyFunction":3,"fbjs/lib/invariant":5,"fbjs/lib/warning":6}],12:[function(require,module,exports){
-(function (process){
+},{"./checkPropTypes":8,"./lib/ReactPropTypesSecret":12,"fbjs/lib/emptyFunction":3,"fbjs/lib/invariant":5,"fbjs/lib/warning":6}],11:[function(require,module,exports){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -1825,7 +1671,7 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
  * of patent rights can be found in the PATENTS file in the same directory.
  */
 
-if (process.env.NODE_ENV !== 'production') {
+if ("production" !== 'production') {
   var REACT_ELEMENT_TYPE = (typeof Symbol === 'function' &&
     Symbol.for &&
     Symbol.for('react.element')) ||
@@ -1847,8 +1693,7 @@ if (process.env.NODE_ENV !== 'production') {
   module.exports = require('./factoryWithThrowingShims')();
 }
 
-}).call(this,require('_process'))
-},{"./factoryWithThrowingShims":10,"./factoryWithTypeCheckers":11,"_process":8}],13:[function(require,module,exports){
+},{"./factoryWithThrowingShims":9,"./factoryWithTypeCheckers":10}],12:[function(require,module,exports){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -1864,7 +1709,7 @@ var ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';
 
 module.exports = ReactPropTypesSecret;
 
-},{}],14:[function(require,module,exports){
+},{}],13:[function(require,module,exports){
 'use strict';
 
 var PropTypes = require('prop-types');
@@ -2220,7 +2065,7 @@ var Mixin = {
 
 module.exports = Mixin;
 
-},{"prop-types":12,"react":undefined,"react-dom":undefined}],15:[function(require,module,exports){
+},{"prop-types":11,"react":undefined,"react-dom":undefined}],14:[function(require,module,exports){
 'use strict';
 
 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; };
@@ -2299,7 +2144,7 @@ module.exports = function (mixins) {
 	});
 };
 
-},{"./touchStyles":16,"create-react-class":2,"prop-types":12,"react":undefined}],16:[function(require,module,exports){
+},{"./touchStyles":15,"create-react-class":2,"prop-types":11,"react":undefined}],15:[function(require,module,exports){
 'use strict';
 
 var touchStyles = {
@@ -2328,4 +2173,4 @@ module.exports = Component;
 module.exports.touchStyles = touchStyles;
 module.exports.Mixin = TappableMixin;
 
-},{"./TappableMixin":14,"./getComponent":15,"./touchStyles":16}]},{},[]);
+},{"./TappableMixin":13,"./getComponent":14,"./touchStyles":15}]},{},[]);
diff --git a/example/dist/common.js b/example/dist/common.js
index c522304..31864c2 100644
--- a/example/dist/common.js
+++ b/example/dist/common.js
@@ -1379,7 +1379,6 @@ process.chdir = function (dir) {
 process.umask = function() { return 0; };
 
 },{}],26:[function(require,module,exports){
-(function (process){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -1391,7 +1390,7 @@ process.umask = function() { return 0; };
 
 'use strict';
 
-if (process.env.NODE_ENV !== 'production') {
+if ("production" !== 'production') {
   var invariant = require('fbjs/lib/invariant');
   var warning = require('fbjs/lib/warning');
   var ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');
@@ -1410,7 +1409,7 @@ if (process.env.NODE_ENV !== 'production') {
  * @private
  */
 function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
-  if (process.env.NODE_ENV !== 'production') {
+  if ("production" !== 'production') {
     for (var typeSpecName in typeSpecs) {
       if (typeSpecs.hasOwnProperty(typeSpecName)) {
         var error;
@@ -1442,8 +1441,7 @@ function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
 
 module.exports = checkPropTypes;
 
-}).call(this,require('_process'))
-},{"./lib/ReactPropTypesSecret":29,"_process":25,"fbjs/lib/invariant":16,"fbjs/lib/warning":23}],27:[function(require,module,exports){
+},{"./lib/ReactPropTypesSecret":29,"fbjs/lib/invariant":16,"fbjs/lib/warning":23}],27:[function(require,module,exports){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -1467,7 +1465,6 @@ module.exports = function(isValidElement) {
 };
 
 },{"./factoryWithTypeCheckers":28}],28:[function(require,module,exports){
-(function (process){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -1616,7 +1613,7 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
   PropTypeError.prototype = Error.prototype;
 
   function createChainableTypeChecker(validate) {
-    if (process.env.NODE_ENV !== 'production') {
+    if ("production" !== 'production') {
       var manualPropTypeCallCache = {};
       var manualPropTypeWarningCount = 0;
     }
@@ -1633,7 +1630,7 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
             'Use `PropTypes.checkPropTypes()` to call them. ' +
             'Read more at http://fb.me/use-check-prop-types'
           );
-        } else if (process.env.NODE_ENV !== 'production' && typeof console !== 'undefined') {
+        } else if ("production" !== 'production' && typeof console !== 'undefined') {
           // Old behavior for people using React.PropTypes
           var cacheKey = componentName + ':' + propName;
           if (
@@ -1743,7 +1740,7 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
 
   function createEnumTypeChecker(expectedValues) {
     if (!Array.isArray(expectedValues)) {
-      process.env.NODE_ENV !== 'production' ? warning(false, 'Invalid argument supplied to oneOf, expected an instance of array.') : void 0;
+      "production" !== 'production' ? warning(false, 'Invalid argument supplied to oneOf, expected an instance of array.') : void 0;
       return emptyFunction.thatReturnsNull;
     }
 
@@ -1786,10 +1783,24 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
 
   function createUnionTypeChecker(arrayOfTypeCheckers) {
     if (!Array.isArray(arrayOfTypeCheckers)) {
-      process.env.NODE_ENV !== 'production' ? warning(false, 'Invalid argument supplied to oneOfType, expected an instance of array.') : void 0;
+      "production" !== 'production' ? warning(false, 'Invalid argument supplied to oneOfType, expected an instance of array.') : void 0;
       return emptyFunction.thatReturnsNull;
     }
 
+    for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
+      var checker = arrayOfTypeCheckers[i];
+      if (typeof checker !== 'function') {
+        warning(
+          false,
+          'Invalid argument supplid to oneOfType. Expected an array of check functions, but ' +
+          'received %s at index %s.',
+          getPostfixForTypeWarning(checker),
+          i
+        );
+        return emptyFunction.thatReturnsNull;
+      }
+    }
+
     function validate(props, propName, componentName, location, propFullName) {
       for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
         var checker = arrayOfTypeCheckers[i];
@@ -1922,6 +1933,9 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
   // 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) {
@@ -1933,6 +1947,23 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
     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) {
@@ -1947,8 +1978,7 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
   return ReactPropTypes;
 };
 
-}).call(this,require('_process'))
-},{"./checkPropTypes":26,"./lib/ReactPropTypesSecret":29,"_process":25,"fbjs/lib/emptyFunction":8,"fbjs/lib/invariant":16,"fbjs/lib/warning":23}],29:[function(require,module,exports){
+},{"./checkPropTypes":26,"./lib/ReactPropTypesSecret":29,"fbjs/lib/emptyFunction":8,"fbjs/lib/invariant":16,"fbjs/lib/warning":23}],29:[function(require,module,exports){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
diff --git a/example/dist/example.js b/example/dist/example.js
index fa2f707..a1ecd17 100644
--- a/example/dist/example.js
+++ b/example/dist/example.js
@@ -119,7 +119,6 @@ var App = createReactClass({
 ReactDOM.render(React.createElement(App, null), document.getElementById('app'));
 
 },{"create-react-class":3,"react":undefined,"react-dom":undefined,"react-tappable":undefined}],2:[function(require,module,exports){
-(function (process){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -137,7 +136,7 @@ var _assign = require('object-assign');
 var emptyObject = require('fbjs/lib/emptyObject');
 var _invariant = require('fbjs/lib/invariant');
 
-if (process.env.NODE_ENV !== 'production') {
+if ("production" !== 'production') {
   var warning = require('fbjs/lib/warning');
 }
 
@@ -150,7 +149,7 @@ function identity(fn) {
 }
 
 var ReactPropTypeLocationNames;
-if (process.env.NODE_ENV !== 'production') {
+if ("production" !== 'production') {
   ReactPropTypeLocationNames = {
     prop: 'prop',
     context: 'context',
@@ -434,13 +433,13 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       }
     },
     childContextTypes: function (Constructor, childContextTypes) {
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         validateTypeDef(Constructor, childContextTypes, 'childContext');
       }
       Constructor.childContextTypes = _assign({}, Constructor.childContextTypes, childContextTypes);
     },
     contextTypes: function (Constructor, contextTypes) {
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         validateTypeDef(Constructor, contextTypes, 'context');
       }
       Constructor.contextTypes = _assign({}, Constructor.contextTypes, contextTypes);
@@ -457,7 +456,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       }
     },
     propTypes: function (Constructor, propTypes) {
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         validateTypeDef(Constructor, propTypes, 'prop');
       }
       Constructor.propTypes = _assign({}, Constructor.propTypes, propTypes);
@@ -472,7 +471,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       if (typeDef.hasOwnProperty(propName)) {
         // use a warning instead of an _invariant so components
         // don't show up in prod but only in __DEV__
-        process.env.NODE_ENV !== 'production' ? warning(typeof typeDef[propName] === 'function', '%s: %s type `%s` is invalid; it must be a function, usually from ' + 'React.PropTypes.', Constructor.displayName || 'ReactClass', ReactPropTypeLocationNames[location], propName) : void 0;
+        "production" !== 'production' ? warning(typeof typeDef[propName] === 'function', '%s: %s type `%s` is invalid; it must be a function, usually from ' + 'React.PropTypes.', Constructor.displayName || 'ReactClass', ReactPropTypeLocationNames[location], propName) : void 0;
       }
     }
   }
@@ -497,11 +496,11 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
    */
   function mixSpecIntoComponent(Constructor, spec) {
     if (!spec) {
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         var typeofSpec = typeof spec;
         var isMixinValid = typeofSpec === 'object' && spec !== null;
 
-        process.env.NODE_ENV !== 'production' ? warning(isMixinValid, '%s: You\'re attempting to include a mixin that is either null ' + 'or not an object. Check the mixins included by the component, ' + 'as well as any mixins they include themselves. ' + 'Expected object but got %s.', Constructor.displayName || 'ReactClass', spec === null ? null : typeofSpec) : void 0;
+        "production" !== 'production' ? warning(isMixinValid, '%s: You\'re attempting to include a mixin that is either null ' + 'or not an object. Check the mixins included by the component, ' + 'as well as any mixins they include themselves. ' + 'Expected object but got %s.', Constructor.displayName || 'ReactClass', spec === null ? null : typeofSpec) : void 0;
       }
 
       return;
@@ -564,7 +563,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
             }
           } else {
             proto[name] = property;
-            if (process.env.NODE_ENV !== 'production') {
+            if ("production" !== 'production') {
               // Add verbose displayName to the function, which helps when looking
               // at profiling tools.
               if (typeof property === 'function' && spec.displayName) {
@@ -663,7 +662,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
    */
   function bindAutoBindMethod(component, method) {
     var boundMethod = method.bind(component);
-    if (process.env.NODE_ENV !== 'production') {
+    if ("production" !== 'production') {
       boundMethod.__reactBoundContext = component;
       boundMethod.__reactBoundMethod = method;
       boundMethod.__reactBoundArguments = null;
@@ -678,9 +677,9 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
         // ignore the value of "this" that the user is trying to use, so
         // let's warn.
         if (newThis !== component && newThis !== null) {
-          process.env.NODE_ENV !== 'production' ? warning(false, 'bind(): React component methods may only be bound to the ' + 'component instance. See %s', componentName) : void 0;
+          "production" !== 'production' ? warning(false, 'bind(): React component methods may only be bound to the ' + 'component instance. See %s', componentName) : void 0;
         } else if (!args.length) {
-          process.env.NODE_ENV !== 'production' ? warning(false, 'bind(): You are binding a component method to the component. ' + 'React does this for you automatically in a high-performance ' + 'way, so you can safely remove this call. See %s', componentName) : void 0;
+          "production" !== 'production' ? warning(false, 'bind(): You are binding a component method to the component. ' + 'React does this for you automatically in a high-performance ' + 'way, so you can safely remove this call. See %s', componentName) : void 0;
           return boundMethod;
         }
         var reboundMethod = _bind.apply(boundMethod, arguments);
@@ -737,8 +736,8 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
      * @final
      */
     isMounted: function () {
-      if (process.env.NODE_ENV !== 'production') {
-        process.env.NODE_ENV !== 'production' ? warning(this.__didWarnIsMounted, '%s: isMounted is deprecated. Instead, make sure to clean up ' + 'subscriptions and pending requests in componentWillUnmount to ' + 'prevent memory leaks.', this.constructor && this.constructor.displayName || this.name || 'Component') : void 0;
+      if ("production" !== 'production') {
+        "production" !== 'production' ? warning(this.__didWarnIsMounted, '%s: isMounted is deprecated. Instead, make sure to clean up ' + 'subscriptions and pending requests in componentWillUnmount to ' + 'prevent memory leaks.', this.constructor && this.constructor.displayName || this.name || 'Component') : void 0;
         this.__didWarnIsMounted = true;
       }
       return !!this.__isMounted;
@@ -764,8 +763,8 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       // This constructor gets overridden by mocks. The argument is used
       // by mocks to assert on what gets mounted.
 
-      if (process.env.NODE_ENV !== 'production') {
-        process.env.NODE_ENV !== 'production' ? warning(this instanceof Constructor, 'Something is calling a React component directly. Use a factory or ' + 'JSX instead. See: https://fb.me/react-legacyfactory') : void 0;
+      if ("production" !== 'production') {
+        "production" !== 'production' ? warning(this instanceof Constructor, 'Something is calling a React component directly. Use a factory or ' + 'JSX instead. See: https://fb.me/react-legacyfactory') : void 0;
       }
 
       // Wire up auto-binding
@@ -784,7 +783,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       // getInitialState and componentWillMount methods for initialization.
 
       var initialState = this.getInitialState ? this.getInitialState() : null;
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         // We allow auto-mocks to proceed as if they're returning null.
         if (initialState === undefined && this.getInitialState._isMockFunction) {
           // This is probably bad practice. Consider warning here and
@@ -810,7 +809,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       Constructor.defaultProps = Constructor.getDefaultProps();
     }
 
-    if (process.env.NODE_ENV !== 'production') {
+    if ("production" !== 'production') {
       // This is a tag to indicate that the use of these method names is ok,
       // since it's used with createClass. If it's not, then it's likely a
       // mistake so we'll warn you to use the static property, property
@@ -825,9 +824,9 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
 
     _invariant(Constructor.prototype.render, 'createClass(...): Class specification must implement a `render` method.');
 
-    if (process.env.NODE_ENV !== 'production') {
-      process.env.NODE_ENV !== 'production' ? warning(!Constructor.prototype.componentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', spec.displayName || 'A component') : void 0;
-      process.env.NODE_ENV !== 'production' ? warning(!Constructor.prototype.componentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', spec.displayName || 'A component') : void 0;
+    if ("production" !== 'production') {
+      "production" !== 'production' ? warning(!Constructor.prototype.componentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', spec.displayName || 'A component') : void 0;
+      "production" !== 'production' ? warning(!Constructor.prototype.componentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', spec.displayName || 'A component') : void 0;
     }
 
     // Reduce time spent doing lookups by setting these on the prototype.
@@ -845,8 +844,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
 
 module.exports = factory;
 
-}).call(this,require('_process'))
-},{"_process":9,"fbjs/lib/emptyObject":5,"fbjs/lib/invariant":6,"fbjs/lib/warning":7,"object-assign":8}],3:[function(require,module,exports){
+},{"fbjs/lib/emptyObject":5,"fbjs/lib/invariant":6,"fbjs/lib/warning":7,"object-assign":8}],3:[function(require,module,exports){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -1145,190 +1143,4 @@ module.exports = shouldUseNative() ? Object.assign : function (target, source) {
 	return to;
 };
 
-},{}],9:[function(require,module,exports){
-// shim for using process in browser
-var process = module.exports = {};
-
-// cached from whatever global is present so that test runners that stub it
-// don't break things.  But we need to wrap it in a try catch in case it is
-// wrapped in strict mode code which doesn't define any globals.  It's inside a
-// function because try/catches deoptimize in certain engines.
-
-var cachedSetTimeout;
-var cachedClearTimeout;
-
-function defaultSetTimout() {
-    throw new Error('setTimeout has not been defined');
-}
-function defaultClearTimeout () {
-    throw new Error('clearTimeout has not been defined');
-}
-(function () {
-    try {
-        if (typeof setTimeout === 'function') {
-            cachedSetTimeout = setTimeout;
-        } else {
-            cachedSetTimeout = defaultSetTimout;
-        }
-    } catch (e) {
-        cachedSetTimeout = defaultSetTimout;
-    }
-    try {
-        if (typeof clearTimeout === 'function') {
-            cachedClearTimeout = clearTimeout;
-        } else {
-            cachedClearTimeout = defaultClearTimeout;
-        }
-    } catch (e) {
-        cachedClearTimeout = defaultClearTimeout;
-    }
-} ())
-function runTimeout(fun) {
-    if (cachedSetTimeout === setTimeout) {
-        //normal enviroments in sane situations
-        return setTimeout(fun, 0);
-    }
-    // if setTimeout wasn't available but was latter defined
-    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
-        cachedSetTimeout = setTimeout;
-        return setTimeout(fun, 0);
-    }
-    try {
-        // when when somebody has screwed with setTimeout but no I.E. maddness
-        return cachedSetTimeout(fun, 0);
-    } catch(e){
-        try {
-            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
-            return cachedSetTimeout.call(null, fun, 0);
-        } catch(e){
-            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
-            return cachedSetTimeout.call(this, fun, 0);
-        }
-    }
-
-
-}
-function runClearTimeout(marker) {
-    if (cachedClearTimeout === clearTimeout) {
-        //normal enviroments in sane situations
-        return clearTimeout(marker);
-    }
-    // if clearTimeout wasn't available but was latter defined
-    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
-        cachedClearTimeout = clearTimeout;
-        return clearTimeout(marker);
-    }
-    try {
-        // when when somebody has screwed with setTimeout but no I.E. maddness
-        return cachedClearTimeout(marker);
-    } catch (e){
-        try {
-            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
-            return cachedClearTimeout.call(null, marker);
-        } catch (e){
-            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
-            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
-            return cachedClearTimeout.call(this, marker);
-        }
-    }
-
-
-
-}
-var queue = [];
-var draining = false;
-var currentQueue;
-var queueIndex = -1;
-
-function cleanUpNextTick() {
-    if (!draining || !currentQueue) {
-        return;
-    }
-    draining = false;
-    if (currentQueue.length) {
-        queue = currentQueue.concat(queue);
-    } else {
-        queueIndex = -1;
-    }
-    if (queue.length) {
-        drainQueue();
-    }
-}
-
-function drainQueue() {
-    if (draining) {
-        return;
-    }
-    var timeout = runTimeout(cleanUpNextTick);
-    draining = true;
-
-    var len = queue.length;
-    while(len) {
-        currentQueue = queue;
-        queue = [];
-        while (++queueIndex < len) {
-            if (currentQueue) {
-                currentQueue[queueIndex].run();
-            }
-        }
-        queueIndex = -1;
-        len = queue.length;
-    }
-    currentQueue = null;
-    draining = false;
-    runClearTimeout(timeout);
-}
-
-process.nextTick = function (fun) {
-    var args = new Array(arguments.length - 1);
-    if (arguments.length > 1) {
-        for (var i = 1; i < arguments.length; i++) {
-            args[i - 1] = arguments[i];
-        }
-    }
-    queue.push(new Item(fun, args));
-    if (queue.length === 1 && !draining) {
-        runTimeout(drainQueue);
-    }
-};
-
-// v8 likes predictible objects
-function Item(fun, array) {
-    this.fun = fun;
-    this.array = array;
-}
-Item.prototype.run = function () {
-    this.fun.apply(null, this.array);
-};
-process.title = 'browser';
-process.browser = true;
-process.env = {};
-process.argv = [];
-process.version = ''; // empty string to avoid regexp issues
-process.versions = {};
-
-function noop() {}
-
-process.on = noop;
-process.addListener = noop;
-process.once = noop;
-process.off = noop;
-process.removeListener = noop;
-process.removeAllListeners = noop;
-process.emit = noop;
-process.prependListener = noop;
-process.prependOnceListener = noop;
-
-process.listeners = function (name) { return [] }
-
-process.binding = function (name) {
-    throw new Error('process.binding is not supported');
-};
-
-process.cwd = function () { return '/' };
-process.chdir = function (dir) {
-    throw new Error('process.chdir is not supported');
-};
-process.umask = function() { return 0; };
-
 },{}]},{},[1]);
diff --git a/example/dist/pinch.js b/example/dist/pinch.js
index 32a02c5..12f4da5 100644
--- a/example/dist/pinch.js
+++ b/example/dist/pinch.js
@@ -80,7 +80,6 @@ var App = createReactClass({
 ReactDOM.render(React.createElement(App, null), document.getElementById('app'));
 
 },{"create-react-class":3,"react":undefined,"react-dom":undefined,"react-tappable":undefined}],2:[function(require,module,exports){
-(function (process){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -98,7 +97,7 @@ var _assign = require('object-assign');
 var emptyObject = require('fbjs/lib/emptyObject');
 var _invariant = require('fbjs/lib/invariant');
 
-if (process.env.NODE_ENV !== 'production') {
+if ("production" !== 'production') {
   var warning = require('fbjs/lib/warning');
 }
 
@@ -111,7 +110,7 @@ function identity(fn) {
 }
 
 var ReactPropTypeLocationNames;
-if (process.env.NODE_ENV !== 'production') {
+if ("production" !== 'production') {
   ReactPropTypeLocationNames = {
     prop: 'prop',
     context: 'context',
@@ -395,13 +394,13 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       }
     },
     childContextTypes: function (Constructor, childContextTypes) {
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         validateTypeDef(Constructor, childContextTypes, 'childContext');
       }
       Constructor.childContextTypes = _assign({}, Constructor.childContextTypes, childContextTypes);
     },
     contextTypes: function (Constructor, contextTypes) {
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         validateTypeDef(Constructor, contextTypes, 'context');
       }
       Constructor.contextTypes = _assign({}, Constructor.contextTypes, contextTypes);
@@ -418,7 +417,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       }
     },
     propTypes: function (Constructor, propTypes) {
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         validateTypeDef(Constructor, propTypes, 'prop');
       }
       Constructor.propTypes = _assign({}, Constructor.propTypes, propTypes);
@@ -433,7 +432,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       if (typeDef.hasOwnProperty(propName)) {
         // use a warning instead of an _invariant so components
         // don't show up in prod but only in __DEV__
-        process.env.NODE_ENV !== 'production' ? warning(typeof typeDef[propName] === 'function', '%s: %s type `%s` is invalid; it must be a function, usually from ' + 'React.PropTypes.', Constructor.displayName || 'ReactClass', ReactPropTypeLocationNames[location], propName) : void 0;
+        "production" !== 'production' ? warning(typeof typeDef[propName] === 'function', '%s: %s type `%s` is invalid; it must be a function, usually from ' + 'React.PropTypes.', Constructor.displayName || 'ReactClass', ReactPropTypeLocationNames[location], propName) : void 0;
       }
     }
   }
@@ -458,11 +457,11 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
    */
   function mixSpecIntoComponent(Constructor, spec) {
     if (!spec) {
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         var typeofSpec = typeof spec;
         var isMixinValid = typeofSpec === 'object' && spec !== null;
 
-        process.env.NODE_ENV !== 'production' ? warning(isMixinValid, '%s: You\'re attempting to include a mixin that is either null ' + 'or not an object. Check the mixins included by the component, ' + 'as well as any mixins they include themselves. ' + 'Expected object but got %s.', Constructor.displayName || 'ReactClass', spec === null ? null : typeofSpec) : void 0;
+        "production" !== 'production' ? warning(isMixinValid, '%s: You\'re attempting to include a mixin that is either null ' + 'or not an object. Check the mixins included by the component, ' + 'as well as any mixins they include themselves. ' + 'Expected object but got %s.', Constructor.displayName || 'ReactClass', spec === null ? null : typeofSpec) : void 0;
       }
 
       return;
@@ -525,7 +524,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
             }
           } else {
             proto[name] = property;
-            if (process.env.NODE_ENV !== 'production') {
+            if ("production" !== 'production') {
               // Add verbose displayName to the function, which helps when looking
               // at profiling tools.
               if (typeof property === 'function' && spec.displayName) {
@@ -624,7 +623,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
    */
   function bindAutoBindMethod(component, method) {
     var boundMethod = method.bind(component);
-    if (process.env.NODE_ENV !== 'production') {
+    if ("production" !== 'production') {
       boundMethod.__reactBoundContext = component;
       boundMethod.__reactBoundMethod = method;
       boundMethod.__reactBoundArguments = null;
@@ -639,9 +638,9 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
         // ignore the value of "this" that the user is trying to use, so
         // let's warn.
         if (newThis !== component && newThis !== null) {
-          process.env.NODE_ENV !== 'production' ? warning(false, 'bind(): React component methods may only be bound to the ' + 'component instance. See %s', componentName) : void 0;
+          "production" !== 'production' ? warning(false, 'bind(): React component methods may only be bound to the ' + 'component instance. See %s', componentName) : void 0;
         } else if (!args.length) {
-          process.env.NODE_ENV !== 'production' ? warning(false, 'bind(): You are binding a component method to the component. ' + 'React does this for you automatically in a high-performance ' + 'way, so you can safely remove this call. See %s', componentName) : void 0;
+          "production" !== 'production' ? warning(false, 'bind(): You are binding a component method to the component. ' + 'React does this for you automatically in a high-performance ' + 'way, so you can safely remove this call. See %s', componentName) : void 0;
           return boundMethod;
         }
         var reboundMethod = _bind.apply(boundMethod, arguments);
@@ -698,8 +697,8 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
      * @final
      */
     isMounted: function () {
-      if (process.env.NODE_ENV !== 'production') {
-        process.env.NODE_ENV !== 'production' ? warning(this.__didWarnIsMounted, '%s: isMounted is deprecated. Instead, make sure to clean up ' + 'subscriptions and pending requests in componentWillUnmount to ' + 'prevent memory leaks.', this.constructor && this.constructor.displayName || this.name || 'Component') : void 0;
+      if ("production" !== 'production') {
+        "production" !== 'production' ? warning(this.__didWarnIsMounted, '%s: isMounted is deprecated. Instead, make sure to clean up ' + 'subscriptions and pending requests in componentWillUnmount to ' + 'prevent memory leaks.', this.constructor && this.constructor.displayName || this.name || 'Component') : void 0;
         this.__didWarnIsMounted = true;
       }
       return !!this.__isMounted;
@@ -725,8 +724,8 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       // This constructor gets overridden by mocks. The argument is used
       // by mocks to assert on what gets mounted.
 
-      if (process.env.NODE_ENV !== 'production') {
-        process.env.NODE_ENV !== 'production' ? warning(this instanceof Constructor, 'Something is calling a React component directly. Use a factory or ' + 'JSX instead. See: https://fb.me/react-legacyfactory') : void 0;
+      if ("production" !== 'production') {
+        "production" !== 'production' ? warning(this instanceof Constructor, 'Something is calling a React component directly. Use a factory or ' + 'JSX instead. See: https://fb.me/react-legacyfactory') : void 0;
       }
 
       // Wire up auto-binding
@@ -745,7 +744,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       // getInitialState and componentWillMount methods for initialization.
 
       var initialState = this.getInitialState ? this.getInitialState() : null;
-      if (process.env.NODE_ENV !== 'production') {
+      if ("production" !== 'production') {
         // We allow auto-mocks to proceed as if they're returning null.
         if (initialState === undefined && this.getInitialState._isMockFunction) {
           // This is probably bad practice. Consider warning here and
@@ -771,7 +770,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
       Constructor.defaultProps = Constructor.getDefaultProps();
     }
 
-    if (process.env.NODE_ENV !== 'production') {
+    if ("production" !== 'production') {
       // This is a tag to indicate that the use of these method names is ok,
       // since it's used with createClass. If it's not, then it's likely a
       // mistake so we'll warn you to use the static property, property
@@ -786,9 +785,9 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
 
     _invariant(Constructor.prototype.render, 'createClass(...): Class specification must implement a `render` method.');
 
-    if (process.env.NODE_ENV !== 'production') {
-      process.env.NODE_ENV !== 'production' ? warning(!Constructor.prototype.componentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', spec.displayName || 'A component') : void 0;
-      process.env.NODE_ENV !== 'production' ? warning(!Constructor.prototype.componentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', spec.displayName || 'A component') : void 0;
+    if ("production" !== 'production') {
+      "production" !== 'production' ? warning(!Constructor.prototype.componentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', spec.displayName || 'A component') : void 0;
+      "production" !== 'production' ? warning(!Constructor.prototype.componentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', spec.displayName || 'A component') : void 0;
     }
 
     // Reduce time spent doing lookups by setting these on the prototype.
@@ -806,8 +805,7 @@ function factory(ReactComponent, isValidElement, ReactNoopUpdateQueue) {
 
 module.exports = factory;
 
-}).call(this,require('_process'))
-},{"_process":9,"fbjs/lib/emptyObject":5,"fbjs/lib/invariant":6,"fbjs/lib/warning":7,"object-assign":8}],3:[function(require,module,exports){
+},{"fbjs/lib/emptyObject":5,"fbjs/lib/invariant":6,"fbjs/lib/warning":7,"object-assign":8}],3:[function(require,module,exports){
 /**
  * Copyright 2013-present, Facebook, Inc.
  * All rights reserved.
@@ -1106,190 +1104,4 @@ module.exports = shouldUseNative() ? Object.assign : function (target, source) {
 	return to;
 };
 
-},{}],9:[function(require,module,exports){
-// shim for using process in browser
-var process = module.exports = {};
-
-// cached from whatever global is present so that test runners that stub it
-// don't break things.  But we need to wrap it in a try catch in case it is
-// wrapped in strict mode code which doesn't define any globals.  It's inside a
-// function because try/catches deoptimize in certain engines.
-
-var cachedSetTimeout;
-var cachedClearTimeout;
-
-function defaultSetTimout() {
-    throw new Error('setTimeout has not been defined');
-}
-function defaultClearTimeout () {
-    throw new Error('clearTimeout has not been defined');
-}
-(function () {
-    try {
-        if (typeof setTimeout === 'function') {
-            cachedSetTimeout = setTimeout;
-        } else {
-            cachedSetTimeout = defaultSetTimout;
-        }
-    } catch (e) {
-        cachedSetTimeout = defaultSetTimout;
-    }
-    try {
-        if (typeof clearTimeout === 'function') {
-            cachedClearTimeout = clearTimeout;
-        } else {
-            cachedClearTimeout = defaultClearTimeout;
-        }
-    } catch (e) {
-        cachedClearTimeout = defaultClearTimeout;
-    }
-} ())
-function runTimeout(fun) {
-    if (cachedSetTimeout === setTimeout) {
-        //normal enviroments in sane situations
-        return setTimeout(fun, 0);
-    }
-    // if setTimeout wasn't available but was latter defined
-    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
-        cachedSetTimeout = setTimeout;
-        return setTimeout(fun, 0);
-    }
-    try {
-        // when when somebody has screwed with setTimeout but no I.E. maddness
-        return cachedSetTimeout(fun, 0);
-    } catch(e){
-        try {
-            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
-            return cachedSetTimeout.call(null, fun, 0);
-        } catch(e){
-            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
-            return cachedSetTimeout.call(this, fun, 0);
-        }
-    }
-
-
-}
-function runClearTimeout(marker) {
-    if (cachedClearTimeout === clearTimeout) {
-        //normal enviroments in sane situations
-        return clearTimeout(marker);
-    }
-    // if clearTimeout wasn't available but was latter defined
-    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
-        cachedClearTimeout = clearTimeout;
-        return clearTimeout(marker);
-    }
-    try {
-        // when when somebody has screwed with setTimeout but no I.E. maddness
-        return cachedClearTimeout(marker);
-    } catch (e){
-        try {
-            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
-            return cachedClearTimeout.call(null, marker);
-        } catch (e){
-            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
-            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
-            return cachedClearTimeout.call(this, marker);
-        }
-    }
-
-
-
-}
-var queue = [];
-var draining = false;
-var currentQueue;
-var queueIndex = -1;
-
-function cleanUpNextTick() {
-    if (!draining || !currentQueue) {
-        return;
-    }
-    draining = false;
-    if (currentQueue.length) {
-        queue = currentQueue.concat(queue);
-    } else {
-        queueIndex = -1;
-    }
-    if (queue.length) {
-        drainQueue();
-    }
-}
-
-function drainQueue() {
-    if (draining) {
-        return;
-    }
-    var timeout = runTimeout(cleanUpNextTick);
-    draining = true;
-
-    var len = queue.length;
-    while(len) {
-        currentQueue = queue;
-        queue = [];
-        while (++queueIndex < len) {
-            if (currentQueue) {
-                currentQueue[queueIndex].run();
-            }
-        }
-        queueIndex = -1;
-        len = queue.length;
-    }
-    currentQueue = null;
-    draining = false;
-    runClearTimeout(timeout);
-}
-
-process.nextTick = function (fun) {
-    var args = new Array(arguments.length - 1);
-    if (arguments.length > 1) {
-        for (var i = 1; i < arguments.length; i++) {
-            args[i - 1] = arguments[i];
-        }
-    }
-    queue.push(new Item(fun, args));
-    if (queue.length === 1 && !draining) {
-        runTimeout(drainQueue);
-    }
-};
-
-// v8 likes predictible objects
-function Item(fun, array) {
-    this.fun = fun;
-    this.array = array;
-}
-Item.prototype.run = function () {
-    this.fun.apply(null, this.array);
-};
-process.title = 'browser';
-process.browser = true;
-process.env = {};
-process.argv = [];
-process.version = ''; // empty string to avoid regexp issues
-process.versions = {};
-
-function noop() {}
-
-process.on = noop;
-process.addListener = noop;
-process.once = noop;
-process.off = noop;
-process.removeListener = noop;
-process.removeAllListeners = noop;
-process.emit = noop;
-process.prependListener = noop;
-process.prependOnceListener = noop;
-
-process.listeners = function (name) { return [] }
-
-process.binding = function (name) {
-    throw new Error('process.binding is not supported');
-};
-
-process.cwd = function () { return '/' };
-process.chdir = function (dir) {
-    throw new Error('process.chdir is not supported');
-};
-process.umask = function() { return 0; };
-
 },{}]},{},[1]);