Currently we can use any reserved word/token (such as var, if, etc) as identifier in naskah which won't be valid JS. The simplest thing we can do is add underscore before printing the identifier if it's a reserved word in JS

So that:

misal x = 3;
misal var = 2;

jika while benar {
} 

should be compiled to

var x = 3;
var _var = 2;

if (_while == true) {
}