Typescript: declare return type to be dependent on argument value? -

i have following function call:

this.get('barcode').scan(); 

is possible define function in way return type determined value of function argument. in case 'get' returns barcode class if called 'barcode' , mqtt class if called 'mqtt'.

yes, can use overload on strings this. example:

interface barcodescanner { scan(): number; } interface accelerometer { getacceleration(): number; }  class myclass {     get(name: 'accelerometer'): accelerometer;     get(name: 'barcode'): barcodescanner;     get(name: string): any; // fallback string signature     get(name: string): { // implementation signature, not visible         /* ... */         return undefined;     }      something() {         let x = this.get('barcode');         x.scan(); // ok         let y = this.get('accelerometer');         y.getacceleration(); // ok     } }