No provider for PlatformRef error after upgrading

问题:

I just upgraded to Angular2 RC5. The app loads fine in all browsers exception IE10. I get an exception "No provider for PlatformRef!" when I bootstrap the application. Everything worked fine in RC4. I saw some posts on the web about this exception, but they were all related to Meteor. I do not use meteor. My project is derived from AngularSeed (previous version that I updated manually to RC5). Any idea on how to fix this? Thanks!

In IE10, I get this error:

No provider for PlatformRef!  
{
  [functions]: ,
  context: <Permission denied>,
  injectors: [ ],
  keys: [ ],
  message: "No provider for PlatformRef!",
  name: "Error",
  stack: undefined,
  Symbol()_m.sovohbnexgu: undefined,
  Symbol()_n.sovohbnexgu: undefined,
  Symbol()_o.sovohbnexgu: undefined,
  Symbol(rxSubscriber)_p.sovohbnexgu: undefined
}

main.ts:

import { enableProdMode } from '@angular/core';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule }              from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

AppModule:

import { provide, NgModule, ExceptionHandler } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { RouterModule } from '@angular/router';
import { HttpModule } from '@angular/http';
import { FormsModule } from '@angular/forms';

import { AppComponent } from './components/app/app.component';
import { AppExceptionHandler } from './app.exceptionhandler';
import { AppRoutes } from './app.routes';
import { LogService, ... } from './services/';

@NgModule({
    declarations: [AppComponent, ...],
    imports: [BrowserModule,
              RouterModule.forRoot(AppRoutes),
              HttpModule,
              FormsModule],
    providers: [provide(ExceptionHandler, { useClass: AppExceptionHandler }), LogService, ...],
    bootstrap: [AppComponent],
})
export class AppModule { }

Dependencies versions:

• "@angular/common": "2.0.0-rc.5",
• "@angular/compiler": "2.0.0-rc.5",
• "@angular/core": "2.0.0-rc.5",
• "@angular/forms": "0.3.0",
• "@angular/http": "2.0.0-rc.5",
• "@angular/platform-browser": "2.0.0-rc.5",
• "@angular/platform-browser-dynamic": "2.0.0-rc.5",
• "@angular/router": "3.0.0-rc.1",
• "es6-module-loader": "^0.17.8",
• "core-js": "^2.4.0",
• "rxjs": "5.0.0-beta.6",
• "systemjs": "0.19.27",
• "zone.js": "0.6.13",

---

Edit: If I try to add PlatformRef to the @NgModule imports, I get this error:

shims.js?1472473326356:4 Uncaught TypeError: Cannot read property 'type' of null(anonymous function) 
@ app.js?1472473326358:5getTransitiveModules 
@ app.js?1472473326358:5CompileMetadataResolver._getTransitiveNgModuleMetadata 
@ app.js?1472473326358:5CompileMetadataResolver.getNgModuleMetadata 
@ app.js?1472473326358:5RuntimeCompiler._compileComponents 
@ app.js?1472473326358:3RuntimeCompiler._compileModuleAndComponents 
@ app.js?1472473326358:3RuntimeCompiler.compileModuleAsync 
@ app.js?1472473326358:3PlatformRef_._bootstrapModuleWithZone 
@ app.js?1472473326358:48PlatformRef_.bootstrapModule 
@ app.js?1472473326358:48bootstrapper 
@ app.js?1472473326358:57(anonymous function) 
[...]

I get this stack on IE:

"TypeError: Unable to get property 'type' of undefined or null reference
   at Anonymous function (eval code:13673:13)
   at Call (http://localhost:5555/node_modules/es6-shim/es6-shim.js?1472473192889:289:7)
   at forEach (http://localhost:5555/node_modules/es6-shim/es6-shim.js?1472473192889:1295:7)
   at getTransitiveModules (eval code:13672:9)
   at CompileMetadataResolver.prototype._getTransitiveNgModuleMetadata (eval code:13387:13)
   at CompileMetadataResolver.prototype.getNgModuleMetadata (eval code:13259:17)
   at RuntimeCompiler.prototype._compileComponents (eval code:15845:13)
   at RuntimeCompiler.prototype._compileModuleAndComponents (eval code:15769:13)
   at RuntimeCompiler.prototype.compileModuleAsync (eval code:15746:13)
   at PlatformRef_.prototype._bootstrapModuleWithZone (eval code:9991:13)"

回答1:

I think you should check the same after importing PlatformRef from @angular/core and adding it to imports configuration of NgModule for your AppModule file.

回答2:

The solution was to remove es6-shim from the dependencies. Works fine now.