chore(build): Remove .es6 files which shadow .ts files.

This removes .es6 files which are pure duplicates of a
.ts file in the same folder.
Next we need to remove .js files as well, and remove karma preprocessors for dart.

Author: alexeagle

gulpfile.js

@@ -568,7 +568,7 @@ gulp.task('build.js.cjs', ['build.tools'], function() {
 var bundleConfig = {
   paths: {
     "*": "dist/js/prod/es6/*.es6",
-    "rx/*": "node_modules/rx/*.js"
+    "rx": "node_modules/rx/dist/rx.js"
   },
   meta: {
     // auto-detection fails to detect properly here - https://github.com/systemjs/builder/issues/123

karma-dart.conf.js

@@ -61,13 +61,14 @@ module.exports = function(config) {
 
     preprocessors: {
       'modules/**/*.js': ['ts2dart'],
+      'modules/angular2/src/reflection/reflector.ts': ['ts2dart'],
       'tools/**/*.js': ['ts2dart']
     },
 
     ts2dartPreprocessor: {
       resolveModuleName: file2moduleName,
       transformPath: function(fileName) {
-        return fileName.replace(/.js$/, '.dart');
+        return fileName.replace(/\.(js|ts)$/, '.dart');
       }
     },
 

karma-js.conf.js

@@ -18,7 +18,7 @@ module.exports = function(config) {
       'node_modules/systemjs/dist/system.src.js',
       'node_modules/systemjs/lib/extension-register.js',
       'node_modules/systemjs/lib/extension-cjs.js',
-      'node_modules/rx/dist/rx.all.js',
+      'node_modules/rx/dist/rx.js',
       'node_modules/reflect-metadata/Reflect.js',
       'node_modules/zone.js/zone.js',
       'node_modules/zone.js/long-stack-trace-zone.js',

modules/angular2/src/facade/async.es6

@@ -78,15 +78,23 @@ export class Observable {
  */
 export class EventEmitter extends Observable {
   _subject: Rx.Subject<any>;
+  _immediateScheduler;
 
   constructor() {
     super();
-    this._subject = new Rx.Subject<any>();
+
+    // System creates a different object for import * than Typescript es5 emit.
+    if (Rx.hasOwnProperty('default')) {
+      this._subject = new (<any>Rx).default.Rx.Subject();
+      this._immediateScheduler = (<any>Rx).default.Rx.Scheduler.immediate;
+    } else {
+      this._subject = new Rx.Subject<any>();
+      this._immediateScheduler = (<any>Rx.Scheduler).immediate;
+    }
   }
 
   observer(generator) {
-    var immediateScheduler = (<any>Rx.Scheduler).immediate;
-    return this._subject.observeOn(immediateScheduler)
+    return this._subject.observeOn(this._immediateScheduler)
         .subscribe((value) => { setTimeout(() => generator.next(value)); },
                    (error) => generator.throw ? generator.throw(error) : null,
                    () => generator.return ? generator.return () : null);