node.js - nodejs console.log does not produce a output on Windows inside a funtion -

i tried following code(which produced corresponding typescript code) , played solution in previous questions , answers. no luck, nothing produced code inside startup() function, works 2 bottom lines. idea? using both nodejs 6.11.x , 8.4.x on both windows 7sp1 , 10.

thanks,

david

var startup = /** @class */ (function () {     function startup() {     }     startup.main = function () {         console.log('hello world!');         console.warn('this warning!');         return 0;     };     return startup; }()); console.log("this log"); console.warn("thi warn"); //# sourcemappingurl=helloworld.js.map 

sorry, more info oh corresponding typescript file

class startup {     public static main(): number {         console.log('hello world!');         console.warn('this warning!');         return 0;      }  }  console.log("this log");  console.warn("thi warn"); 

try code

function startup() {     console.log('hello world!');     console.warn('this warning!');         return startup; } startup();  console.log("this log"); console.warn("thi warn"); 

and giving me output

hope helps..