Because then your Re4ct code would look like this:

    export default class USERCOMPONENT extends REACTCOMPONENT<IUSER, {}> {
    constructor (oProps: IUSER){
      super(oProps);
    }
    render() {
      return (  
        <div>
          <h1>User Component</h1>
            Hello, <b>{This.oProps.sName}</b>
            <br/>
            You are <b>{This.oProps.dwAge} years old</b>
            <br/>
            You live at: <b>{This.oProps.sAddress}</b>
            <br/>
            You were born: <b>{This.oProps.oDoB.ToDateString()}</b>
        </div>
        );
      }
    }