Angular 2 - Pipe reuse in multiple modules - error not found or duplicate definition

Question

Im working on angular 2 final release.

I have declared two modules: main app and one for the settings page.

Answer 1

If you want to use the pipe in a different module, then add the module where the pipe is declared to imports: [...] of the module where you want to re-use the pipe, instead of adding it to declarations: [] of multiple modules.

For example:

@NgModule({
    imports: [],
    declarations: [JsonStringifyPipe],
    exports: [JsonStringifyPipe]
})
export class JsonStringifyModule { }

@NgModule({
    imports: [
      BrowserModule, HttpModule, routing, FormsModule, SettingsModule,
      JsonStringifyModule],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule { }

@NgModule({
    imports: [
       CommonModule, HttpModule, FormsModule, routing, 
       JsonStringifyModule],
    declarations: [SettingsComponent],
    exports: [SettingsComponent],
    providers: []
})
export class SettingsModule { }