now preventing async readline clutter

ts/index.ts

@@ -31,6 +31,12 @@ export let start = function(moduleNameArg:string = "",loaderLengthArg:string = "
 export let stop = function(){
     if(doAnimation){
         earlyChild.kill();
+        let rl = readline.createInterface({
+            input: process.stdin,
+            output: process.stdout
+        });
+        rl.write(null, {ctrl: true, name: 'u'});
+        rl.close();
     }
 };