Question

How do you restrict provider scope to a module?

Answer 1

It is possible to restrict service provider scope to a specific module instead making available to entire application. There are two possible ways to do it.

1. Using providedIn in service:

   import { Injectable } from '@angular/core';
   import { SomeModule } from './some.module';
   
   @Injectable({
     providedIn: SomeModule,
   })
   export class SomeService {
   }
2. Declare provider for the service in module:

   import { NgModule } from '@angular/core';
   
   import { SomeService } from './some.service';
   
   @NgModule({
     providers: [SomeService],
   })
   export class SomeModule {
   }