diff --git a/pkg/dev_compiler/lib/runtime/_errors.js b/pkg/dev_compiler/lib/runtime/_errors.js
index 32b6ae01a8e1..0bb1a0f903cd 100644
--- a/pkg/dev_compiler/lib/runtime/_errors.js
+++ b/pkg/dev_compiler/lib/runtime/_errors.js
@@ -9,23 +9,24 @@
 
 dart_library.library('dart_runtime/_errors', null, /* Imports */[
 ], /* Lazy Imports */[
+  'dart_runtime/_operations',
   'dart/core',
   'dart/_js_helper'
-], function(exports, core, _js_helper) {
+], function(exports, operations, core, _js_helper) {
   'use strict';
 
   function throwNoSuchMethod(obj, name, pArgs, nArgs, extras) {
-    throw new core.NoSuchMethodError(obj, name, pArgs, nArgs, extras);
+    operations.throw(new core.NoSuchMethodError(obj, name, pArgs, nArgs, extras));
   }
   exports.throwNoSuchMethod = throwNoSuchMethod;
 
   function throwCastError(actual, type) {
-    throw new _js_helper.CastErrorImplementation(actual, type);
+    operations.throw(new _js_helper.CastErrorImplementation(actual, type));
   }
   exports.throwCastError = throwCastError;
 
   function throwAssertionError() {
-    throw new core.AssertionError();
+    operations.throw(new core.AssertionError());
   }
   exports.throwAssertionError = throwAssertionError;
 });
diff --git a/pkg/dev_compiler/lib/runtime/_types.js b/pkg/dev_compiler/lib/runtime/_types.js
index af5e2d04d24f..482adf4fa1c7 100644
--- a/pkg/dev_compiler/lib/runtime/_types.js
+++ b/pkg/dev_compiler/lib/runtime/_types.js
@@ -139,6 +139,26 @@ dart_library.library('dart_runtime/_types', null, /* Imports */[
       this.args = args;
       this.optionals = optionals;
       this.named = named;
+
+      // TODO(vsm): This is just parameter metadata for now.
+      this.metadata = [];
+      function process(array, metadata) {
+        var result = [];
+        for (var i = 0; i < array.length; ++i) {
+          var arg = array[i];
+          if (arg instanceof Array) {
+            metadata.push(arg.slice(1));
+            result.push(arg[0]);
+          } else {
+            metadata.push([]);
+            result.push(arg);
+          }
+        }
+        return result;
+      }
+      this.args = process(this.args, this.metadata);
+      this.optionals = process(this.optionals, this.metadata);
+      // TODO(vsm): Add named arguments.
       this._canonize();
     }
     _canonize() {
@@ -202,6 +222,10 @@ dart_library.library('dart_runtime/_types', null, /* Imports */[
     get named() {
       return this.functionType.named;
     }
+
+    get metadata() {
+      return this.functionType.metadata;
+    }
   }
 
   function _functionType(definite, returnType, args, extra) {
diff --git a/pkg/dev_compiler/lib/runtime/dart/_js_mirrors.js b/pkg/dev_compiler/lib/runtime/dart/_js_mirrors.js
index e9d97229cd45..0051e8d903bb 100644
--- a/pkg/dev_compiler/lib/runtime/dart/_js_mirrors.js
+++ b/pkg/dev_compiler/lib/runtime/dart/_js_mirrors.js
@@ -53,6 +53,15 @@ dart_library.library('dart/_js_mirrors', null, /* Imports */[
     _(reflectee) {
       this.reflectee = reflectee;
     }
+    get type() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.type unimplemented"));
+    }
+    get hasReflectee() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.hasReflectee unimplemented"));
+    }
+    delegate(invocation) {
+      return dart.throw(new core.UnimplementedError("ClassMirror.delegate unimplemented"));
+    }
     getField(symbol) {
       let name = getName(symbol);
       let field = _dload(this.reflectee, name);
@@ -60,8 +69,8 @@ dart_library.library('dart/_js_mirrors', null, /* Imports */[
     }
     setField(symbol, value) {
       let name = getName(symbol);
-      let field = _dput(this.reflectee, name, value);
-      return new JsInstanceMirror._(field);
+      _dput(this.reflectee, name, value);
+      return new JsInstanceMirror._(value);
     }
     invoke(symbol, args, namedArgs) {
       if (namedArgs === void 0)
@@ -87,6 +96,7 @@ dart_library.library('dart/_js_mirrors', null, /* Imports */[
   dart.setSignature(JsInstanceMirror, {
     constructors: () => ({_: [JsInstanceMirror, [core.Object]]}),
     methods: () => ({
+      delegate: [dart.dynamic, [core.Invocation]],
       getField: [mirrors.InstanceMirror, [core.Symbol]],
       setField: [mirrors.InstanceMirror, [core.Symbol, core.Object]],
       invoke: [mirrors.InstanceMirror, [core.Symbol, core.List], [core.Map$(core.Symbol, dart.dynamic)]],
@@ -121,35 +131,204 @@ dart_library.library('dart/_js_mirrors', null, /* Imports */[
       let instance = new this[_cls](...args);
       return new JsInstanceMirror._(instance);
     }
+    get superinterfaces() {
+      let interfaces = this[_cls][dart.implements];
+      if (interfaces == null) {
+        return dart.list([], mirrors.ClassMirror);
+      }
+      dart.throw(new core.UnimplementedError("ClassMirror.superinterfaces unimplemented"));
+    }
+    getField(fieldName) {
+      return dart.throw(new core.UnimplementedError("ClassMirror.getField unimplemented"));
+    }
+    invoke(memberName, positionalArguments, namedArguments) {
+      if (namedArguments === void 0)
+        namedArguments = null;
+      return dart.throw(new core.UnimplementedError("ClassMirror.invoke unimplemented"));
+    }
+    isAssignableTo(other) {
+      return dart.throw(new core.UnimplementedError("ClassMirror.isAssignable unimplemented"));
+    }
+    isSubclassOf(other) {
+      return dart.throw(new core.UnimplementedError("ClassMirror.isSubclassOf unimplemented"));
+    }
+    isSubtypeOf(other) {
+      return dart.throw(new core.UnimplementedError("ClassMirror.isSubtypeOf unimplemented"));
+    }
+    setField(fieldName, value) {
+      return dart.throw(new core.UnimplementedError("ClassMirror.setField unimplemented"));
+    }
+    get hasReflectedType() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.hasReflectedType unimplemented"));
+    }
+    get instanceMembers() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.instanceMembers unimplemented"));
+    }
+    get isAbstract() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.isAbstract unimplemented"));
+    }
+    get isEnum() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.isEnum unimplemented"));
+    }
+    get isOriginalDeclaration() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.isOriginalDeclaration unimplemented"));
+    }
+    get isPrivate() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.isPrivate unimplemented"));
+    }
+    get isTopLevel() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.isTopLevel unimplemented"));
+    }
+    get location() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.location unimplemented"));
+    }
+    get mixin() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.mixin unimplemented"));
+    }
+    get originalDeclaration() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.originalDeclaration unimplemented"));
+    }
+    get owner() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.owner unimplemented"));
+    }
+    get qualifiedName() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.qualifiedName unimplemented"));
+    }
+    get reflectedType() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.reflectedType unimplemented"));
+    }
+    get staticMembers() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.staticMembers unimplemented"));
+    }
+    get superclass() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.superclass unimplemented"));
+    }
+    get typeArguments() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.typeArguments unimplemented"));
+    }
+    get typeVariables() {
+      return dart.throw(new core.UnimplementedError("ClassMirror.typeVariables unimplemented"));
+    }
   }
   JsClassMirror[dart.implements] = () => [mirrors.ClassMirror];
   dart.defineNamedConstructor(JsClassMirror, '_');
   dart.setSignature(JsClassMirror, {
     constructors: () => ({_: [JsClassMirror, [core.Type]]}),
-    methods: () => ({newInstance: [mirrors.InstanceMirror, [core.Symbol, core.List], [core.Map$(core.Symbol, dart.dynamic)]]})
+    methods: () => ({
+      newInstance: [mirrors.InstanceMirror, [core.Symbol, core.List], [core.Map$(core.Symbol, dart.dynamic)]],
+      getField: [mirrors.InstanceMirror, [core.Symbol]],
+      invoke: [mirrors.InstanceMirror, [core.Symbol, core.List], [core.Map$(core.Symbol, dart.dynamic)]],
+      isAssignableTo: [core.bool, [mirrors.TypeMirror]],
+      isSubclassOf: [core.bool, [mirrors.ClassMirror]],
+      isSubtypeOf: [core.bool, [mirrors.TypeMirror]],
+      setField: [mirrors.InstanceMirror, [core.Symbol, core.Object]]
+    })
   });
   class JsTypeMirror extends core.Object {
     _(reflectedType) {
       this.reflectedType = reflectedType;
+      this.hasReflectedType = true;
+    }
+    isAssignableTo(other) {
+      return dart.throw(new core.UnimplementedError("TypeMirror.isAssignable unimplemented"));
+    }
+    isSubtypeOf(other) {
+      return dart.throw(new core.UnimplementedError("TypeMirror.isSubtypeOf unimplemented"));
+    }
+    get isOriginalDeclaration() {
+      return dart.throw(new core.UnimplementedError("TypeMirror.isOriginalDeclaration unimplemented"));
+    }
+    get isPrivate() {
+      return dart.throw(new core.UnimplementedError("TypeMirror.isPrivate unimplemented"));
+    }
+    get isTopLevel() {
+      return dart.throw(new core.UnimplementedError("TypeMirror.isTopLevel unimplemented"));
+    }
+    get location() {
+      return dart.throw(new core.UnimplementedError("TypeMirror.location unimplemented"));
+    }
+    get metadata() {
+      return dart.throw(new core.UnimplementedError("TypeMirror.metadata unimplemented"));
+    }
+    get originalDeclaration() {
+      return dart.throw(new core.UnimplementedError("TypeMirror.originalDeclaration unimplemented"));
+    }
+    get owner() {
+      return dart.throw(new core.UnimplementedError("TypeMirror.owner unimplemented"));
+    }
+    get qualifiedName() {
+      return dart.throw(new core.UnimplementedError("TypeMirror.qualifiedName unimplemented"));
+    }
+    get simpleName() {
+      return dart.throw(new core.UnimplementedError("TypeMirror.simpleName unimplemented"));
+    }
+    get typeArguments() {
+      return dart.throw(new core.UnimplementedError("TypeMirror.typeArguments unimplemented"));
+    }
+    get typeVariables() {
+      return dart.throw(new core.UnimplementedError("TypeMirror.typeVariables unimplemented"));
     }
   }
   JsTypeMirror[dart.implements] = () => [mirrors.TypeMirror];
   dart.defineNamedConstructor(JsTypeMirror, '_');
   dart.setSignature(JsTypeMirror, {
-    constructors: () => ({_: [JsTypeMirror, [core.Type]]})
+    constructors: () => ({_: [JsTypeMirror, [core.Type]]}),
+    methods: () => ({
+      isAssignableTo: [core.bool, [mirrors.TypeMirror]],
+      isSubtypeOf: [core.bool, [mirrors.TypeMirror]]
+    })
   });
   let _name = Symbol('_name');
   class JsParameterMirror extends core.Object {
-    _(name, t) {
-      this.metadata = dart.list([], mirrors.InstanceMirror);
+    _(name, t, annotations) {
       this[_name] = name;
       this.type = new JsTypeMirror._(t);
+      this.metadata = core.List$(mirrors.InstanceMirror).from(annotations[dartx.map](dart.fn(a => new JsInstanceMirror._(a), JsInstanceMirror, [dart.dynamic])));
+    }
+    get defaultValue() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.defaultValues unimplemented"));
+    }
+    get hasDefaultValue() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.hasDefaultValue unimplemented"));
+    }
+    get isConst() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.isConst unimplemented"));
+    }
+    get isFinal() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.isFinal unimplemented"));
+    }
+    get isNamed() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.isNamed unimplemented"));
+    }
+    get isOptional() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.isOptional unimplemented"));
+    }
+    get isPrivate() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.isPrivate unimplemented"));
+    }
+    get isStatic() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.isStatic unimplemented"));
+    }
+    get isTopLevel() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.isTopLevel unimplemented"));
+    }
+    get location() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.location unimplemented"));
+    }
+    get owner() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.owner unimplemented"));
+    }
+    get qualifiedName() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.qualifiedName unimplemented"));
+    }
+    get simpleName() {
+      return dart.throw(new core.UnimplementedError("ParameterMirror.simpleName unimplemented"));
     }
   }
   JsParameterMirror[dart.implements] = () => [mirrors.ParameterMirror];
   dart.defineNamedConstructor(JsParameterMirror, '_');
   dart.setSignature(JsParameterMirror, {
-    constructors: () => ({_: [JsParameterMirror, [core.String, core.Type]]})
+    constructors: () => ({_: [JsParameterMirror, [core.String, core.Type, core.List]]})
   });
   let _method = Symbol('_method');
   let _params = Symbol('_params');
@@ -177,16 +356,81 @@ dart_library.library('dart/_js_mirrors', null, /* Imports */[
       let params = core.List$(mirrors.ParameterMirror).new(dart.notNull(args[dartx.length]) + dart.notNull(opts[dartx.length]));
       for (let i = 0; dart.notNull(i) < dart.notNull(args[dartx.length]); i = dart.notNull(i) + 1) {
         let type = args[dartx.get](i);
-        let param = new JsParameterMirror._('', dart.as(type, core.Type));
+        let metadata = dart.dindex(dart.dload(ftype, 'metadata'), i);
+        let param = new JsParameterMirror._('', dart.as(type, core.Type), dart.as(metadata, core.List));
         params[dartx.set](i, param);
       }
       for (let i = 0; dart.notNull(i) < dart.notNull(opts[dartx.length]); i = dart.notNull(i) + 1) {
         let type = opts[dartx.get](i);
-        let param = new JsParameterMirror._('', dart.as(type, core.Type));
+        let metadata = dart.dindex(dart.dload(ftype, 'metadata'), dart.notNull(args[dartx.length]) + dart.notNull(i));
+        let param = new JsParameterMirror._('', dart.as(type, core.Type), dart.as(metadata, core.List));
         params[dartx.set](dart.notNull(i) + dart.notNull(args[dartx.length]), param);
       }
       return params;
     }
+    get isAbstract() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isAbstract unimplemented"));
+    }
+    get isConstConstructor() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isConstConstructor unimplemented"));
+    }
+    get isConstructor() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isConstructor unimplemented"));
+    }
+    get isFactoryConstructor() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isFactoryConstructor unimplemented"));
+    }
+    get isGenerativeConstructor() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isGenerativeConstructor unimplemented"));
+    }
+    get isGetter() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isGetter unimplemented"));
+    }
+    get isOperator() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isOperator unimplemented"));
+    }
+    get isPrivate() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isPrivate unimplemented"));
+    }
+    get isRedirectingConstructor() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isRedirectingConstructor unimplemented"));
+    }
+    get isRegularMethod() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isRegularMethod unimplemented"));
+    }
+    get isSetter() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isSetter unimplemented"));
+    }
+    get isStatic() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isStatic unimplemented"));
+    }
+    get isSynthetic() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isSynthetic unimplemented"));
+    }
+    get isTopLevel() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.isTopLevel unimplemented"));
+    }
+    get location() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.location unimplemented"));
+    }
+    get metadata() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.metadata unimplemented"));
+    }
+    get owner() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.owner unimplemented"));
+    }
+    get qualifiedName() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.qualifiedName unimplemented"));
+    }
+    get returnType() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.returnType unimplemented"));
+    }
+    get simpleName() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.simpleName unimplemented"));
+    }
+    get source() {
+      return dart.throw(new core.UnimplementedError("MethodMirror.source unimplemented"));
+    }
   }
   JsMethodMirror[dart.implements] = () => [mirrors.MethodMirror];
   dart.defineNamedConstructor(JsMethodMirror, '_');
diff --git a/pkg/dev_compiler/lib/runtime/dart_utils.js b/pkg/dev_compiler/lib/runtime/dart_utils.js
index 70555c729187..a1c2bf9762b4 100644
--- a/pkg/dev_compiler/lib/runtime/dart_utils.js
+++ b/pkg/dev_compiler/lib/runtime/dart_utils.js
@@ -113,7 +113,7 @@ var dart_utils =
       show = getOwnNamesAndSymbols(from);
     }
     if (hide != void 0) {
-      var hideMap = new Map(hide);
+      var hideMap = new Set(hide);
       show = show.filter((k) => !hideMap.has(k));
     }
     return copyTheseProperties(to, from, show);
diff --git a/pkg/dev_compiler/lib/src/codegen/js_codegen.dart b/pkg/dev_compiler/lib/src/codegen/js_codegen.dart
index ddae19b24c35..bb73a3cb104d 100644
--- a/pkg/dev_compiler/lib/src/codegen/js_codegen.dart
+++ b/pkg/dev_compiler/lib/src/codegen/js_codegen.dart
@@ -509,6 +509,7 @@ class JSCodegenVisitor extends GeneralizingAstVisitor {
     result.add(js.statement('#.values = dart.const(dart.list(#, #));',
         [id, values, _emitTypeName(type)]));
 
+    if (isPublic(type.name)) _addExport(type.name);
     return _statement(result);
   }
 
@@ -751,7 +752,7 @@ class JSCodegenVisitor extends GeneralizingAstVisitor {
       for (ConstructorDeclaration node in ctors) {
         var memberName = _constructorName(node.element);
         var element = node.element;
-        var parts = _emitFunctionTypeParts(element.type);
+        var parts = _emitFunctionTypeParts(element.type, node.parameters);
         var property =
             new JS.Property(memberName, new JS.ArrayInitializer(parts));
         tCtors.add(property);
@@ -794,6 +795,7 @@ class JSCodegenVisitor extends GeneralizingAstVisitor {
       ]));
     }
 
+    // TODO(vsm): Make this optional per #268.
     // Metadata
     if (metadata.isNotEmpty) {
       body.add(js.statement('#[dart.metadata] = () => #;', [
@@ -1479,9 +1481,27 @@ class JSCodegenVisitor extends GeneralizingAstVisitor {
   JS.TemporaryId _getTemp(Element key, String name) =>
       _temps.putIfAbsent(key, () => new JS.TemporaryId(name));
 
-  JS.ArrayInitializer _emitTypeNames(List<DartType> types) {
-    return new JS.ArrayInitializer(
-        new List<JS.Expression>.from(types.map(_emitTypeName)));
+  List<Annotation> _parameterMetadata(FormalParameter p) =>
+      (p is NormalFormalParameter)
+          ? p.metadata
+          : (p as DefaultFormalParameter).parameter.metadata;
+
+  JS.ArrayInitializer _emitTypeNames(List<DartType> types,
+      [List<FormalParameter> parameters]) {
+    var result = <JS.Expression>[];
+    for (int i = 0; i < types.length; ++i) {
+      var metadata =
+          parameters != null ? _parameterMetadata(parameters[i]) : [];
+      var typeName = _emitTypeName(types[i]);
+      var value = typeName;
+      // TODO(vsm): Make this optional per #268.
+      if (metadata.isNotEmpty) {
+        metadata = metadata.map(_instantiateAnnotation).toList();
+        value = new JS.ArrayInitializer([typeName]..addAll(metadata));
+      }
+      result.add(value);
+    }
+    return new JS.ArrayInitializer(result);
   }
 
   JS.ObjectInitializer _emitTypeProperties(Map<String, DartType> types) {
@@ -1496,21 +1516,25 @@ class JSCodegenVisitor extends GeneralizingAstVisitor {
 
   /// Emit the pieces of a function type, as an array of return type,
   /// regular args, and optional/named args.
-  List<JS.Expression> _emitFunctionTypeParts(FunctionType type) {
+  List<JS.Expression> _emitFunctionTypeParts(FunctionType type,
+      [FormalParameterList parameterList]) {
+    var parameters = parameterList?.parameters;
     var returnType = type.returnType;
     var parameterTypes = type.normalParameterTypes;
     var optionalTypes = type.optionalParameterTypes;
     var namedTypes = type.namedParameterTypes;
     var rt = _emitTypeName(returnType);
-    var ra = _emitTypeNames(parameterTypes);
+    var ra = _emitTypeNames(parameterTypes, parameters);
     if (!namedTypes.isEmpty) {
       assert(optionalTypes.isEmpty);
+      // TODO(vsm): Pass in annotations here as well.
       var na = _emitTypeProperties(namedTypes);
       return [rt, ra, na];
     }
     if (!optionalTypes.isEmpty) {
       assert(namedTypes.isEmpty);
-      var oa = _emitTypeNames(optionalTypes);
+      var oa = _emitTypeNames(
+          optionalTypes, parameters?.sublist(parameterTypes.length));
       return [rt, ra, oa];
     }
     return [rt, ra];
@@ -1694,7 +1718,7 @@ class JSCodegenVisitor extends GeneralizingAstVisitor {
     if (DynamicInvoke.get(target)) {
       code = 'dart.$DSEND(#, #, #)';
     } else if (DynamicInvoke.get(node.methodName)) {
-      // This is a dynamic call to a statically know target. For example:
+      // This is a dynamic call to a statically known target. For example:
       //     class Foo { Function bar; }
       //     new Foo().bar(); // dynamic call
       code = 'dart.$DCALL(#.#, #)';
diff --git a/pkg/dev_compiler/test/codegen/expect/fieldtest.js b/pkg/dev_compiler/test/codegen/expect/fieldtest.js
index f69baba971e9..fc4d670867ff 100644
--- a/pkg/dev_compiler/test/codegen/expect/fieldtest.js
+++ b/pkg/dev_compiler/test/codegen/expect/fieldtest.js
@@ -133,5 +133,6 @@ dart_library.library('fieldtest', null, /* Imports */[
   exports.Generic = Generic;
   exports.StaticFieldOrder1 = StaticFieldOrder1;
   exports.StaticFieldOrder2 = StaticFieldOrder2;
+  exports.MyEnum = MyEnum;
   exports.main = main;
 });
diff --git a/pkg/dev_compiler/tool/input_sdk/private/js_mirrors.dart b/pkg/dev_compiler/tool/input_sdk/private/js_mirrors.dart
index cc50f43c0a7e..71c108fc6078 100644
--- a/pkg/dev_compiler/tool/input_sdk/private/js_mirrors.dart
+++ b/pkg/dev_compiler/tool/input_sdk/private/js_mirrors.dart
@@ -4,7 +4,6 @@
 
 library dart._js_mirrors;
 
-import 'dart:collection';
 import 'dart:mirrors';
 import 'dart:_foreign_helper' show JS;
 import 'dart:_internal' as _internal;
@@ -45,6 +44,13 @@ class JsInstanceMirror implements InstanceMirror {
 
   JsInstanceMirror._(this.reflectee);
 
+  ClassMirror get type =>
+      throw new UnimplementedError("ClassMirror.type unimplemented");
+  bool get hasReflectee =>
+      throw new UnimplementedError("ClassMirror.hasReflectee unimplemented");
+  delegate(Invocation invocation) =>
+      throw new UnimplementedError("ClassMirror.delegate unimplemented");
+
   InstanceMirror getField(Symbol symbol) {
     var name = getName(symbol);
     var field = _dload(reflectee, name);
@@ -53,8 +59,8 @@ class JsInstanceMirror implements InstanceMirror {
 
   InstanceMirror setField(Symbol symbol, Object value) {
     var name = getName(symbol);
-    var field = _dput(reflectee, name, value);
-    return new JsInstanceMirror._(field);
+    _dput(reflectee, name, value);
+    return new JsInstanceMirror._(value);
   }
 
   InstanceMirror invoke(Symbol symbol, List<dynamic> args,
@@ -92,10 +98,11 @@ class JsClassMirror implements ClassMirror {
       : _cls = cls,
         simpleName = new Symbol(JS('String', '#.name', cls)) {
     // Load metadata.
-    var fn = JS('List<InstanceMirror>', '#[dart.metadata]', _cls);
+    var fn = JS('Function', '#[dart.metadata]', _cls);
     _metadata = (fn == null)
         ? <InstanceMirror>[]
-        : new List<InstanceMirror>.from(fn().map((i) => new JsInstanceMirror._(i)));
+        : new List<InstanceMirror>.from(
+            fn().map((i) => new JsInstanceMirror._(i)));
 
     // Load declarations.
     // TODO(vsm): This is only populating the default constructor right now.
@@ -111,20 +118,139 @@ class JsClassMirror implements ClassMirror {
     var instance = JS('', 'new #(...#)', _cls, args);
     return new JsInstanceMirror._(instance);
   }
+
+  List<ClassMirror> get superinterfaces {
+    var interfaces = JS('Function', '#[dart.implements]', _cls);
+    if (interfaces == null) {
+      return [];
+    }
+    throw new UnimplementedError("ClassMirror.superinterfaces unimplemented");
+  }
+
+  // TODO(vsm): Implement
+  InstanceMirror getField(Symbol fieldName) =>
+      throw new UnimplementedError("ClassMirror.getField unimplemented");
+  InstanceMirror invoke(Symbol memberName, List positionalArguments,
+          [Map<Symbol, dynamic> namedArguments]) =>
+      throw new UnimplementedError("ClassMirror.invoke unimplemented");
+  bool isAssignableTo(TypeMirror other) =>
+      throw new UnimplementedError("ClassMirror.isAssignable unimplemented");
+  bool isSubclassOf(ClassMirror other) =>
+      throw new UnimplementedError("ClassMirror.isSubclassOf unimplemented");
+  bool isSubtypeOf(TypeMirror other) =>
+      throw new UnimplementedError("ClassMirror.isSubtypeOf unimplemented");
+  InstanceMirror setField(Symbol fieldName, Object value) =>
+      throw new UnimplementedError("ClassMirror.setField unimplemented");
+  bool get hasReflectedType => throw new UnimplementedError(
+      "ClassMirror.hasReflectedType unimplemented");
+  Map<Symbol, MethodMirror> get instanceMembers =>
+      throw new UnimplementedError("ClassMirror.instanceMembers unimplemented");
+  bool get isAbstract =>
+      throw new UnimplementedError("ClassMirror.isAbstract unimplemented");
+  bool get isEnum =>
+      throw new UnimplementedError("ClassMirror.isEnum unimplemented");
+  bool get isOriginalDeclaration => throw new UnimplementedError(
+      "ClassMirror.isOriginalDeclaration unimplemented");
+  bool get isPrivate =>
+      throw new UnimplementedError("ClassMirror.isPrivate unimplemented");
+  bool get isTopLevel =>
+      throw new UnimplementedError("ClassMirror.isTopLevel unimplemented");
+  SourceLocation get location =>
+      throw new UnimplementedError("ClassMirror.location unimplemented");
+  ClassMirror get mixin =>
+      throw new UnimplementedError("ClassMirror.mixin unimplemented");
+  TypeMirror get originalDeclaration => throw new UnimplementedError(
+      "ClassMirror.originalDeclaration unimplemented");
+  DeclarationMirror get owner =>
+      throw new UnimplementedError("ClassMirror.owner unimplemented");
+  Symbol get qualifiedName =>
+      throw new UnimplementedError("ClassMirror.qualifiedName unimplemented");
+  Type get reflectedType =>
+      throw new UnimplementedError("ClassMirror.reflectedType unimplemented");
+  Map<Symbol, MethodMirror> get staticMembers =>
+      throw new UnimplementedError("ClassMirror.staticMembers unimplemented");
+  ClassMirror get superclass =>
+      throw new UnimplementedError("ClassMirror.superclass unimplemented");
+  List<TypeMirror> get typeArguments =>
+      throw new UnimplementedError("ClassMirror.typeArguments unimplemented");
+  List<TypeVariableMirror> get typeVariables =>
+      throw new UnimplementedError("ClassMirror.typeVariables unimplemented");
 }
 
 class JsTypeMirror implements TypeMirror {
+  // TODO(vsm): Support original declarations, etc., where there is no actual
+  // reflected type.
   final Type reflectedType;
+  final bool hasReflectedType = true;
 
   JsTypeMirror._(this.reflectedType);
+
+  // TODO(vsm): Implement
+  bool isAssignableTo(TypeMirror other) =>
+      throw new UnimplementedError("TypeMirror.isAssignable unimplemented");
+  bool isSubtypeOf(TypeMirror other) =>
+      throw new UnimplementedError("TypeMirror.isSubtypeOf unimplemented");
+  bool get isOriginalDeclaration => throw new UnimplementedError(
+      "TypeMirror.isOriginalDeclaration unimplemented");
+  bool get isPrivate =>
+      throw new UnimplementedError("TypeMirror.isPrivate unimplemented");
+  bool get isTopLevel =>
+      throw new UnimplementedError("TypeMirror.isTopLevel unimplemented");
+  SourceLocation get location =>
+      throw new UnimplementedError("TypeMirror.location unimplemented");
+  List<InstanceMirror> get metadata =>
+      throw new UnimplementedError("TypeMirror.metadata unimplemented");
+  TypeMirror get originalDeclaration => throw new UnimplementedError(
+      "TypeMirror.originalDeclaration unimplemented");
+  DeclarationMirror get owner =>
+      throw new UnimplementedError("TypeMirror.owner unimplemented");
+  Symbol get qualifiedName =>
+      throw new UnimplementedError("TypeMirror.qualifiedName unimplemented");
+  Symbol get simpleName =>
+      throw new UnimplementedError("TypeMirror.simpleName unimplemented");
+  List<TypeMirror> get typeArguments =>
+      throw new UnimplementedError("TypeMirror.typeArguments unimplemented");
+  List<TypeVariableMirror> get typeVariables =>
+      throw new UnimplementedError("TypeMirror.typeVariables unimplemented");
 }
 
 class JsParameterMirror implements ParameterMirror {
   final String _name;
   final TypeMirror type;
-  final List<InstanceMirror> metadata = [];
-
-  JsParameterMirror._(this._name, Type t) : type = new JsTypeMirror._(t);
+  final List<InstanceMirror> metadata;
+
+  JsParameterMirror._(this._name, Type t, List annotations)
+      : type = new JsTypeMirror._(t),
+        metadata = new List<InstanceMirror>.from(
+            annotations.map((a) => new JsInstanceMirror._(a)));
+
+  // TODO(vsm): Implement
+  InstanceMirror get defaultValue => throw new UnimplementedError(
+      "ParameterMirror.defaultValues unimplemented");
+  bool get hasDefaultValue => throw new UnimplementedError(
+      "ParameterMirror.hasDefaultValue unimplemented");
+  bool get isConst =>
+      throw new UnimplementedError("ParameterMirror.isConst unimplemented");
+  bool get isFinal =>
+      throw new UnimplementedError("ParameterMirror.isFinal unimplemented");
+  bool get isNamed =>
+      throw new UnimplementedError("ParameterMirror.isNamed unimplemented");
+  bool get isOptional =>
+      throw new UnimplementedError("ParameterMirror.isOptional unimplemented");
+  bool get isPrivate =>
+      throw new UnimplementedError("ParameterMirror.isPrivate unimplemented");
+  bool get isStatic =>
+      throw new UnimplementedError("ParameterMirror.isStatic unimplemented");
+  bool get isTopLevel =>
+      throw new UnimplementedError("ParameterMirror.isTopLevel unimplemented");
+  SourceLocation get location =>
+      throw new UnimplementedError("ParameterMirror.location unimplemented");
+  DeclarationMirror get owner =>
+      throw new UnimplementedError("ParameterMirror.owner unimplemented");
+  Symbol get qualifiedName => throw new UnimplementedError(
+      "ParameterMirror.qualifiedName unimplemented");
+  Symbol get simpleName =>
+      throw new UnimplementedError("ParameterMirror.simpleName unimplemented");
 }
 
 class JsMethodMirror implements MethodMirror {
@@ -155,18 +281,64 @@ class JsMethodMirror implements MethodMirror {
 
     for (var i = 0; i < args.length; ++i) {
       var type = args[i];
+      var metadata = ftype.metadata[i];
       // TODO(vsm): Recover the param name.
-      var param = new JsParameterMirror._('', type);
+      var param = new JsParameterMirror._('', type, metadata);
       params[i] = param;
     }
 
     for (var i = 0; i < opts.length; ++i) {
       var type = opts[i];
+      var metadata = ftype.metadata[args.length + i];
       // TODO(vsm): Recover the param name.
-      var param = new JsParameterMirror._('', type);
+      var param = new JsParameterMirror._('', type, metadata);
       params[i + args.length] = param;
     }
 
     return params;
   }
+
+  // TODO(vsm): Implement
+  bool get isAbstract =>
+      throw new UnimplementedError("MethodMirror.isAbstract unimplemented");
+  bool get isConstConstructor => throw new UnimplementedError(
+      "MethodMirror.isConstConstructor unimplemented");
+  bool get isConstructor =>
+      throw new UnimplementedError("MethodMirror.isConstructor unimplemented");
+  bool get isFactoryConstructor => throw new UnimplementedError(
+      "MethodMirror.isFactoryConstructor unimplemented");
+  bool get isGenerativeConstructor => throw new UnimplementedError(
+      "MethodMirror.isGenerativeConstructor unimplemented");
+  bool get isGetter =>
+      throw new UnimplementedError("MethodMirror.isGetter unimplemented");
+  bool get isOperator =>
+      throw new UnimplementedError("MethodMirror.isOperator unimplemented");
+  bool get isPrivate =>
+      throw new UnimplementedError("MethodMirror.isPrivate unimplemented");
+  bool get isRedirectingConstructor => throw new UnimplementedError(
+      "MethodMirror.isRedirectingConstructor unimplemented");
+  bool get isRegularMethod => throw new UnimplementedError(
+      "MethodMirror.isRegularMethod unimplemented");
+  bool get isSetter =>
+      throw new UnimplementedError("MethodMirror.isSetter unimplemented");
+  bool get isStatic =>
+      throw new UnimplementedError("MethodMirror.isStatic unimplemented");
+  bool get isSynthetic =>
+      throw new UnimplementedError("MethodMirror.isSynthetic unimplemented");
+  bool get isTopLevel =>
+      throw new UnimplementedError("MethodMirror.isTopLevel unimplemented");
+  SourceLocation get location =>
+      throw new UnimplementedError("MethodMirror.location unimplemented");
+  List<InstanceMirror> get metadata =>
+      throw new UnimplementedError("MethodMirror.metadata unimplemented");
+  DeclarationMirror get owner =>
+      throw new UnimplementedError("MethodMirror.owner unimplemented");
+  Symbol get qualifiedName =>
+      throw new UnimplementedError("MethodMirror.qualifiedName unimplemented");
+  TypeMirror get returnType =>
+      throw new UnimplementedError("MethodMirror.returnType unimplemented");
+  Symbol get simpleName =>
+      throw new UnimplementedError("MethodMirror.simpleName unimplemented");
+  String get source =>
+      throw new UnimplementedError("MethodMirror.source unimplemented");
 }
diff --git a/pkg/dev_compiler/tool/sdk_expected_errors.txt b/pkg/dev_compiler/tool/sdk_expected_errors.txt
index 3a56d4475da7..f85ef85ff19a 100644
--- a/pkg/dev_compiler/tool/sdk_expected_errors.txt
+++ b/pkg/dev_compiler/tool/sdk_expected_errors.txt
@@ -376,10 +376,4 @@ warning: [DownCastImplicit] list (Object) will need runtime check to cast to typ
 warning: [DownCastComposite] callMethod('splice', [index, 1])[0] (dynamic) will need runtime check to cast to type E (dart:js, line 404, col 12)
 warning: [DownCastComposite] callMethod('pop') (dynamic) will need runtime check to cast to type E (dart:js, line 409, col 12)
 warning: [DownCastImplicit] ms (num) will need runtime check to cast to type int (dart:js, line 486, col 52)
-severe: [AnalyzerMessage] Missing concrete implementation of getter 'VariableMirror.isStatic', getter 'VariableMirror.isFinal', getter 'DeclarationMirror.owner', getter 'ParameterMirror.isOptional' and 9 more (dart:_js_mirrors, line 122, col 7)
-severe: [AnalyzerMessage] Missing concrete implementation of getter 'TypeMirror.typeArguments', getter 'TypeMirror.isOriginalDeclaration', getter 'DeclarationMirror.owner', getter 'DeclarationMirror.location' and 10 more (dart:_js_mirrors, line 116, col 7)
-severe: [AnalyzerMessage] Missing concrete implementation of getter 'MethodMirror.isSetter', getter 'MethodMirror.isConstructor', getter 'MethodMirror.isConstConstructor', getter 'MethodMirror.isAbstract' and 17 more (dart:_js_mirrors, line 130, col 7)
-severe: [AnalyzerMessage] Missing concrete implementation of getter 'InstanceMirror.type', getter 'InstanceMirror.hasReflectee' and 'InstanceMirror.delegate' (dart:_js_mirrors, line 43, col 7)
-severe: [AnalyzerMessage] Missing concrete implementation of getter 'TypeMirror.typeArguments', getter 'ClassMirror.superinterfaces', getter 'TypeMirror.isOriginalDeclaration', getter 'ClassMirror.staticMembers' and 19 more (dart:_js_mirrors, line 80, col 7)
-severe: [AnalyzerMessage] The argument type 'void' cannot be assigned to the parameter type 'Object' (dart:_js_mirrors, line 57, col 35)
 warning: [DownCastImplicit] (tm as ClassMirror).originalDeclaration (TypeMirror) will need runtime check to cast to type ClassMirror (dart:mirrors, line 171, col 10)