Angular 5 synchronous HTTP call

Question

I have an Angular 5 application in which I have to call some heavy REST service (usually takes some seconds). I need its result in different part of application, so I would

Answer 1

The question is how I can wait until HTTP request is finished and then save and return the 're sult' object.

// Code in service:

ServiceMethod:Observabke(){
     if (typeof this.result === 'undefined') {
                return this.service.call().map(res=>res);
}

// This is code in component.

 componentMethod(){


        return this.service.ServiceMethod()
            .subscribe(response => {
                this.result = response;
               },
               ()=>//handle error,
               () => // call completed { return this.result;  // Subscriber});
    }
    return this.weeklyPlayer;  // MyCustomObject (This return won't wait for http to get completed. Not sure why you want multiple returns.)

    }

Hope this helps.