'Dagger2 @Provides annotation order issue

Say I have MapperModule like below:

@Module
public class MapperModule {

    @Singleton @Provides 
    public static ObjectMapper provideObjectMapper () {
        return new ObjectMapper();
    }
}

Then I import it from the Component like so:

@Singleton
@Component (modules={MapperModule.class})

public interface XComponent {

}

The MapperModule.class couldn't be found in the Component.

But if I put @Singleton after @Provides, the component interface is able to find the module.

Can anyone explain?

dagger-2dagger


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