Index: node_modules/prop-types/checkPropTypes.js
===================================================================
--- node_modules/prop-types/checkPropTypes.js	(revision 47f4eafa88902f713d8f8cfe5d10306816c61ea3)
+++ node_modules/prop-types/checkPropTypes.js	(revision 47f4eafa88902f713d8f8cfe5d10306816c61ea3)
@@ -0,0 +1,103 @@
+/**
+ * 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 strict';
+
+var printWarning = function() {};
+
+if (process.env.NODE_ENV !== 'production') {
+  var ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');
+  var loggedTypeFailures = {};
+  var has = require('./lib/has');
+
+  printWarning = function(text) {
+    var message = 'Warning: ' + text;
+    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) { /**/ }
+  };
+}
+
+/**
+ * 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) {
+  if (process.env.NODE_ENV !== 'production') {
+    for (var typeSpecName in typeSpecs) {
+      if (has(typeSpecs, 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.
+          if (typeof typeSpecs[typeSpecName] !== 'function') {
+            var err = Error(
+              (componentName || 'React class') + ': ' + location + ' type `' + typeSpecName + '` is invalid; ' +
+              'it must be a function, usually from the `prop-types` package, but received `' + typeof typeSpecs[typeSpecName] + '`.' +
+              'This often happens because of typos such as `PropTypes.function` instead of `PropTypes.func`.'
+            );
+            err.name = 'Invariant Violation';
+            throw err;
+          }
+          error = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, ReactPropTypesSecret);
+        } catch (ex) {
+          error = ex;
+        }
+        if (error && !(error instanceof Error)) {
+          printWarning(
+            (componentName || 'React class') + ': type specification of ' +
+            location + ' `' + typeSpecName + '` is invalid; the type checker ' +
+            'function must return `null` or an `Error` but returned a ' + typeof error + '. ' +
+            'You may have forgotten to pass an argument to the type checker ' +
+            'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' +
+            'shape all require an argument).'
+          );
+        }
+        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() : '';
+
+          printWarning(
+            'Failed ' + location + ' type: ' + error.message + (stack != null ? stack : '')
+          );
+        }
+      }
+    }
+  }
+}
+
+/**
+ * Resets warning cache when testing.
+ *
+ * @private
+ */
+checkPropTypes.resetWarningCache = function() {
+  if (process.env.NODE_ENV !== 'production') {
+    loggedTypeFailures = {};
+  }
+}
+
+module.exports = checkPropTypes;
