Developer.ts

interface Work{
    goForWork():void;
    doWorking():void;
    goOut():void;
}

class Worker2 implements Work{
    //private  name:string = "홍길동";
    protected  name:string = "홍길동";
    //name:string = "홍길동";
    /* constructor(name: string){
        this.name = name;
    } */
    goForWork():void{
        console.log(this.name+"출근 중");
    }
    doWorking():void{
        console.log(this.name+"일 중");
    }
    goOut():void{
        console.log(this.name+"퇴근 중");
    }
}
class Developer extends Worker2{
    doWorking():void this{
        console.log(this.name+"개발 중");
    }
}
class Corder extends Worker2{
    doWorking():void{
        console.log("코딩 중");
    }
}

function doTest(w:Work){
    w.goForWork();
    w.doWorking();
    w.goOut();
}
let dev:Work = new Developer();
doTest(dev);
let cod:Work = new Corder();
doTest(cod);