Use a symbol for static length/name (conflicts with Function properties in ES5: cannot redefine Fun…

lib/src/codegen/js_names.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dev_compiler.src.codegen.js_names;
 
 import 'dart:collection';
 
 import '../js/js_ast.dart';
 
@@ skipping 269 matching lines @@
     case "public":
     case "static":
     case "yield":
       return strictMode;
   }
   return false;
 }
 
 /// Returns true for invalid static field names in strict mode.
 /// In particular, "caller" "callee" and "arguments" cannot be used.
-bool invalidStaticFieldName(String name) {
+///
+/// [closureCompiler] marks some names as invalid for the purpose of ES6->ES5
+/// lowering with the Closure Compiler.
+bool invalidStaticFieldName(String name, {bool closureCompiler: false}) {
   switch (name) {
     case "arguments":
     case "caller":
     case "callee":
       return true;
+    // Workarounds for Closure:
+    // (see https://github.com/google/closure-compiler/issues/1460)
+    case "name":
+    case "length":
+      return closureCompiler;
   }
   return false;
 }