feat(util): system.js ng-module loader

system.js ng-module loader

src/util/module-loader.ts

@@ -0,0 +1,49 @@
+import { ComponentFactoryResolver, Injectable, Injector, OpaqueToken, Type } from '@angular/core';
+import { NgModuleLoader } from './ng-module-loader';
+
+export const LAZY_LOADED_TOKEN = new OpaqueToken('LZYCMP');
+
+/**
+ * @private
+ */
+@Injectable()
+export class ModuleLoader {
+
+  constructor(
+    private _ngModuleLoader: NgModuleLoader,
+    private _injector: Injector) {}
+
+
+  load(modulePath: string): Promise<LoadedModule> {
+    console.time(`ModuleLoader, load: ${modulePath}'`);
+
+    const splitString = modulePath.split(SPLITTER);
+
+    return this._ngModuleLoader.load(splitString[0], splitString[1])
+      .then(loadedModule => {
+        console.timeEnd(`ModuleLoader, load: ${modulePath}'`);
+        const ref = loadedModule.create(this._injector);
+
+        return {
+          componentFactoryResolver: ref.componentFactoryResolver,
+          component: ref.injector.get(LAZY_LOADED_TOKEN)
+        };
+      });
+  }
+}
+
+const SPLITTER = '#';
+
+
+/**
+ * @private
+ */
+export function provideModuleLoader(ngModuleLoader: NgModuleLoader, injector: Injector) {
+  return new ModuleLoader(ngModuleLoader, injector);
+}
+
+
+export interface LoadedModule {
+  componentFactoryResolver: ComponentFactoryResolver;
+  component: Type<any>;
+};