I prefer writing the base case in a guard clause. I think it is more elegant....

[Comment from a deleted post]

Replies for: The fun way: function reverseFun(str) { const rest = str.length > 1 ? reverseFun(str.substring(1)) : '' return rest + str[0] || '' }

I prefer writing the base case in a guard clause. I think it is more elegant.

const reverseString = cs => {
  if (cs.length <= 0) return '';
  return reverseString(cs.substring(1)) + cs[0];
};

const reverseString = cs => cs.length <=0
? ''
: reverseString(cs.substring(1)) + cs[0];