Merge pull request #5614 from mark-rushakoff/avoid-negative-lookahead

Avoid negative lookahead in regular expression

src/isomorphic/children/ReactChildren.js

@@ -21,9 +21,9 @@ var twoArgumentPooler = PooledClass.twoArgumentPooler;
 var fourArgumentPooler = PooledClass.fourArgumentPooler;
 
 
-var userProvidedKeyEscapeRegex = /\/(?!\/)/g;
+var userProvidedKeyEscapeRegex = /\/+/g;
 function escapeUserProvidedKey(text) {
-  return ('' + text).replace(userProvidedKeyEscapeRegex, '//');
+  return ('' + text).replace(userProvidedKeyEscapeRegex, '$&/');
 }