Concept of how dart:mirrors LibraryMirror, ClassMirror can be implemented in dart2js.

sdk/lib/_internal/compiler/implementation/lib/js_helper.dart

Index: sdk/lib/_internal/compiler/implementation/lib/js_helper.dart
diff --git a/sdk/lib/_internal/compiler/implementation/lib/js_helper.dart b/sdk/lib/_internal/compiler/implementation/lib/js_helper.dart
index 39e1c5c8f651b7254d2ac1d00b522d3925ff7525..53a10bf084bd2a4d4b4ad39983e1ef91b21c1464 100644
--- a/sdk/lib/_internal/compiler/implementation/lib/js_helper.dart
+++ b/sdk/lib/_internal/compiler/implementation/lib/js_helper.dart
@@ -767,10 +767,22 @@ class Primitives {
     return JS('var', '#.apply(#, #)', jsFunction, function, arguments);
   }
 
+  // When isolate support is present global statics are in
+  // JS('var', '#.isolateStatics', Primitives.getCurrentIsolate());
+  // When there is no isolate support, there is no isolateStatics in
+  // getCurrentIsolate(). Global statics are directly in '$', which
+  // is current isollate.
+  // So using '$' seems to work as a way to acces global statics
+  // whether there is isolate support or not.
+  static getGlobalStatics() => JS('var', r'$');
+
   static getConstructor(String className) {
     // TODO(ahe): How to safely access $?
-    return JS('var', r'$[#]', className);
+    return JS('var', r'#[#]', getGlobalStatics(), className);
   }
+
+  static getCurrentIsolate() => JS_CURRENT_ISOLATE();
+  static getIsolateID(isolate) => JS('var', '#.id', isolate);
 }
 
 /**