ES6 immediately invoke recursive arrow function

Question

This is my current code:

const fn = parameter => {
    // if, else ...
    fn(X);
};
fn(0);

Now, I can\'t use this approach as I need to cal

Answer 1

First, let me put the disclaimer that Immediately-Invoked-Function-Expressions (IIFE) are considered bad practice in ES6, and this is tail-recursion and personally I would change it to a for loop.

but you can always do this I guess:

((x) =>{ const fn=(p)=>{
       //whatever
       fn(q)
   }
   fn(x)
})(0)