JS solution not working, although is correct and working locally.

[michskrzpriv]

There's an easy fundamental javascript task:
_An isogram is a word that has no repeating letters, consecutive or non-consecutive. Implement a function that determines whether a string that contains only letters is an isogram. Assume the empty string is an isogram. Ignore letter case.

**Example: (Input --> Output)_

"Dermatoglyphics" --> true
"aba" --> false
"moOse" --> false (ignore letter case)**

My solution is:

function isIsogram(str){
  let counts = {};
  counts = str.split('').map( elem => !counts[elem] ? counts[elem] = 1 : counts[elem] += 1 );

  return Math.max( ...counts ) === 1;
}

However it doesn't work within the Kata test environment. When I tested it locally and using jsfiddle.net it does work! I did some research within the code, and it looks like counts[elem] = 1 does not work when elem is a variable.

In other words, you can define

counts['m'] = 1

but

let m = 'm';
counts[m] = 1;

This seems like some Kata testing environment bug. But please correct me if I'm wrong.l

[hobovsky]

What does your solution return for "moOse", or "KEep"? It should return false for both.

Please mind that Github boards are not a good place to discuss questions related to.solving kata. The best place are kata discourse, or Codewars Discord and #help-solve channel.

Cheers!

[michskrzpriv]

You're right.

[michskrzpriv]

Forget it. My Bad. Sorry

[michskrzpriv]

This thread can be deleted :)