Strategy Pattern with Angular and Typescript

I would like to implement Strategy pattern in Angular/Typescript and use a service in component; service takes a strategy interface as constructor parameter. Also, constraint is that service is dependent on some other injected service at angular level.

I'm digging through the docs but unable to find a way to do it. I would like not to end up in over-engineered code, searching for simple solution to have a Strategy pattern implemented.

Please see below in mocked-up code:

export interface IStrategy {
    calculate(a,b): number;
}

export class MinusStrategy implements IStrategy {
    calculate(a,b): number {
        return a - b;
    }
}

export class PlusStrategy implements IStrategy {
    calculate(a,b): number {
        return a + b;
    }
}

@Injectable() 
export class CalculatorService {
    // I understand it is not possible to have DI of the Interface here for calcStrategy 
    constructor(private http: HttpClient; private calcStrategy: IStrategy);
    
    getByCalc() {
        this.http.get('someurl?calc=' + calcStrategy.calculate(1,1));
    }
}

@Component(// skipped config here...)
export class MyComponent implements OnInit {
    // How to inject appropriate concrete strategy (and either autowire or provide httpClient?)
    constructor(private service: new CalculatorService(httpClient, new MinusStrategy()));
    
    useInComponent() {
        this.service.getByCalc();
    }
}