cool

Enjoy!

Ahh... I just saw your code after I submitted mine. We almost have the same exact code. Good job!

One liner for recursive method.

Decent enough solution, but readability isnt great, you could have formatted it in an easier to read style but nested ternaries are always hard to read properly.

something like this perhaps
return operation === "+"
? value1 + value2
: operation === "-"
? value1 - value2
: operation === "*"
? value1 * value2
: operation === "/"
? value1 / value2
: false;

ippon)

use ===