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TypeProvider

interface

Configures the Injector to return an instance of Type when `Type' is used as the token.

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interface TypeProvider extends Type<any> {

  // inherited from core/Type
  constructor(...args: any[]): T
}

Description

Create an instance by invoking the new operator and supplying additional arguments. This form is a short form of TypeProvider;

For more details, see the "Dependency Injection Guide".

Further information is available in the Usage Notes...

Usage notes

@Injectable()
class Greeting {
  salutation = 'Hello';
}

const injector = Injector.create({providers: [{provide: Greeting, useClass: Greeting}]});

expect(injector.get(Greeting).salutation).toBe('Hello');

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https://angular.io/api/core/TypeProvider