Angular 2 - Can't resolve all parameters for component: (?)

I started an Angular2 app and I have an issue since days !

Can't resolve all parameters for HomeComponent: (?).(…)


But my issue is not about a particular provider : Everyting that I try to inject in my HomeComponent constructor return that error. No similars questions on that errors resolved my situation, and now I spent so much time looking for this that I can't find it.

App.moodule.ts :

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { RouterModule } from '@angular/router';
import { SimpleNotificationsModule } from 'angular2-notifications';

// Controllers
import { AppComponent } from './app.component';
import { HomeComponent } from './components/home.component';

// Service
import { AuthService } from './services/auth.service';

// Guards
import { AuthGuard } from './guards/auth.guard';

@NgModule({
imports: [
BrowserModule,
RouterModule.forRoot([
{
path: '',
component: HomeComponent,
canActivate: [AuthGuard]
}
]),
SimpleNotificationsModule
],
declarations: [
AppComponent,
HomeComponent
],
providers: [
AuthGuard,
AuthService,
],
bootstrap: [ AppComponent ]
})

export class AppModule { }


My HomeComponent :

import { Component, OnInit } from '@angular/core';
import { Router } from '@angular/router';

import { NotificationsService } from 'angular2-notifications';

import { AuthService } from '../services/auth.service';

@Component({
selector: 'home',
templateUrl: '/templates/home.html'
})

export class HomeComponent implements OnInit
{
public test: boolean = false;

constructor(
private _authService: AuthService
) {}

ngOnInit()
{
this.test = true;
}
}


The AuthService that I try to import is empty, and as I said every providers that I inject in HomeComponent return that error. Each constructor argument create a new question mark in the error. Let me know if you need more code, but I don't think the rest (templates, systemjs.config.js...) is the problem

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