Strict isEOF / ~22% faster on issue2813, from 16.5s to 13.5s

src/core/parser.js

@@ -24,7 +24,7 @@
 var EOF = {};
 
 function isEOF(v) {
-  return (v == EOF);
+  return (v === EOF);
 }
 
 var Parser = (function ParserClosure() {