implement exports, fixes #141

lib/runtime/dart/_js_mirrors.js

 dart_library.library('dart/_js_mirrors', null, /* Imports */[
   "dart_runtime/dart",
   'dart/_internal',
   'dart/core',
   'dart/mirrors'
 ], /* Lazy imports */[
 ], function(exports, dart, _internal, core, mirrors) {
   'use strict';
   let dartx = dart.dartx;
   function getName(symbol) {
@@ skipping 100 matching lines @@
       let fn = this[_cls][dart.metadata];
       this[_metadata] = fn == null ? dart.list([], mirrors.InstanceMirror) : core.List$(mirrors.InstanceMirror).from(dart.as(dart.dsend(dart.dcall(fn), 'map', dart.fn(i => new JsInstanceMirror._(i), JsInstanceMirror, [dart.dynamic])), core.Iterable));
       this[_declarations] = core.Map$(core.Symbol, mirrors.MethodMirror).new();
       this[_declarations].set(this.simpleName, new JsMethodMirror._(this, this[_cls]));
     }
     newInstance(constructorName, args, namedArgs) {
       if (namedArgs === void 0)
         namedArgs = null;
       dart.assert(getName(constructorName) == "");
       dart.assert(namedArgs == null || dart.notNull(namedArgs.isEmpty));
-      let instance = exports._dart.instantiate(this[_cls], args);
+      let instance = new this[_cls](...args);
       return new JsInstanceMirror._(instance);
     }
   }
   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)]]})
   });
   class JsTypeMirror extends core.Object {
@@ skipping 66 matching lines @@
   exports.getName = getName;
   exports.getSymbol = getSymbol;
   exports.reflect = reflect;
   exports.reflectType = reflectType;
   exports.JsInstanceMirror = JsInstanceMirror;
   exports.JsClassMirror = JsClassMirror;
   exports.JsTypeMirror = JsTypeMirror;
   exports.JsParameterMirror = JsParameterMirror;
   exports.JsMethodMirror = JsMethodMirror;
 });