Please add a @Pipe/@Directive/@Component annotation. Error

Question

I am stuck in a situation here. I am getting an error like this.

 compiler.es5.js:1694 Uncaught Error: Unexpected value \'LoginComponent\' declared by the modul         


        

Answer 1

In my case I mistakenly added this:

@Component({
    selector: 'app-some-item',
    templateUrl: './some-item.component.html',
    styleUrls: ['./some-item.component.scss'],
    providers: [ConfirmationService]
})

declare var configuration: any;

while the correct form is:

declare var configuration: any;

@Component({
    selector: 'app-some-item',
    templateUrl: './some-item.component.html',
    styleUrls: ['./some-item.component.scss'],
    providers: [ConfirmationService]
})    

Answer 2

The Above error occurs if any wrong import done. For example sometimes Service files may be added in TestBed.configureTestingModule. And also while importing Material component for example import from

import {MatDialogModule} from '@angular/material/dialog'

not from

import {MatDialogModule} from '@angular/material'

Answer 3

I was trying to use BrowserModule in a shared module (import and export). That was not allowed so instead I had to use the CommonModule instead and it worked.

Answer 4

You have a typo in the import in your LoginComponent's file

import { Component } from '@angular/Core';

It's lowercase c, not uppercase

import { Component } from '@angular/core';

Answer 5

Another solution is below way and It was my fault that when happened I put HomeService in declaration section in app.module.ts whereas I should put HomeService in Providers section that as you see below HomeService in declaration:[] is not in a correct place and HomeService is in Providers :[] section in a correct place that should be.

import { BrowserModule } from '@angular/platform-browser';
import { NgModule  } from '@angular/core';
import { HttpModule } from '@angular/http';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { HomeComponent } from './components/home/home.component'; 
import { HomeService } from './components/home/home.service';


@NgModule({
  declarations: [
    AppComponent,
    HomeComponent,  
    HomeService // You will get error here
  ],
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    AppRoutingModule
  ],
  providers: [
    HomeService // Right place to set HomeService
  ],
  bootstrap: [AppComponent]
})
export class AppModule { }

hope this help you.