Angular2.3 Custom Library and dependency injection

Question

I am trying to inject a service from a custom library created with yeoman into my existing ionic2 project. The index.ts of the lib (which will be installed as npm module) :

@NgModule({
    imports: [
        CommonModule
    ],
    declarations: [
        SampleComponent,
        SampleDirective,
    ],
    exports: [
        SampleComponent,
        SampleDirective,
        SamplePipe
    ]
})
export default class SampleModule {
    static forRoot(): ModuleWithProviders {
        return {
            ngModule: SampleModule,
            providers: [SampleService, SettingsSVC]
         };
    }
}

In my ionic2 App I want to inject SettingsSVC and the module.ts. If I add it to the imports-Section of the app.module it says :

Unexpected value 'SettingsSVC' imported by the module 'AppModule'

If not, I get a console error "provider not found".

The type (class regardless of the @Injectable) itself is recognized and linked and If I add the same class to my Ionic2 App and its providers section in the module it is working with Injection.

Any suggestions on how to make it work?

Ankit Singh · Accepted Answer · 2016-12-27 09:27:01Z

1

Try this,

@NgModule({
  imports: [SampleModule.forRoot()],
  declaretions: [],
  providers: []
})
export class YourAppModule {}

answered Dec 27, 2016 at 9:27

Ankit Singh

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Comments

Milad · Accepted Answer · 2016-12-28 10:20:23Z

When it says unexpected value , normally means what ever you're importing is not successfully imported.

Either :

1- Path of the SettingsSVC is wrong

2- The name of SettingsSVC is wrong

3- The path is correct but SettingsSVC is not exported

So to make sure your import is actually imported SettingsSVC , put a console.log after it and log it out

import {SettingsSVC} from 'the/path/'

console.log('SettingsSVC',SettingsSVC);

If the log says undefined , it's definitely one of the above ( or maybe something similar ).

And by the way , I got a bit confused , did you want to import SettingsSVC as a service and put it into your providers or did you want to import it as a module and put it into imports:[] ?

You can't have both!

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