Same for me here, very cleaver solution!

This could help you too:

https://www.youtube.com/watch?v=h33Srr5J9nY

Hi, you use it exactly as a function,

 //while a traditional anonymous function looks like this
 function (a,b){
  return a + b + 100;
 }

 //anonymous arrow function would look
 //without arguments u would write the same but would wrote variables first
(a,b) => a + b + 100;

/*Likewise, if the body requires additional lines of processing, you'll need to re-introduce braces PLUS the "return" (arrow functions do
not magically guess what or when you want to "return"):*/

// Traditional Anonymous Function
function (a, b){
  let chuck = 42;
  return a + b + chuck;
}

// Arrow Function
(a, b) => {
  let chuck = 42;
  return a + b + chuck;
}

//And finally, for named functions we treat arrow expressions like variables:
// Traditional Function
function bob (a){
  return a + 100;
}

// Arrow Function
let bob = a => a + 100;

I took the examples from: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions
Hope it helps you!

awesome, very clever