Challenge Truncate a string has an issue.
User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_3) AppleWebKit/601.4.4 (KHTML, like Gecko) Version/9.0.3 Safari/601.4.4.

My code:

function truncate(str, num) {
  var newString = str;
  var trim;

  num < 3 ? trim = num : trim = num - 3;

  if(str.length > num) {
    newString = newString.slice(0, trim) + "...";
  }
  return newString;
}

truncate("A-tisket a-tasket A green and yellow basket", 11);

Using a ternary operator to check if the num is less than 3 results in all tests passing but throws an error in the editor. The error is on num - 3 and states Expected an assignment or function call and instead saw an expression.

This is normal. It's the linter telling you this is a bad practice use of a ternary that results in hard to read code. It should pass because the code isn't technically wrong, it's just something you probably want to not do. Thanks and happy coding!