Use the great new Devtools API for custom formatters. Now Dart objects are now generally as easy to…

lib/src/compiler.dart

Index: lib/src/compiler.dart
diff --git a/lib/src/compiler.dart b/lib/src/compiler.dart
index f37cb06be8f806927daa256baf8317f4a3db5788..61c568591624e3a99238c4a54937cf2f6f85bcf8 100644
--- a/lib/src/compiler.dart
+++ b/lib/src/compiler.dart
@@ -514,7 +514,8 @@ const corelibOrder = const [
   'dart.js',
   'dart._metadata',
   'dart.dom.html_common',
-  'dart.dom.html'
+  'dart.dom.html',
+  'dart._debugger'
   // _foreign_helper is not included, as it only defines the JS builtin that
   // the compiler handles at compile time.
 ];