code: function getCap(str) {
              const firstChar = str.charAt(0);
  
              const firstCharLower = firstChar.toLowerCase();
              const firstCharUpper = firstChar.toUpperCase();
  
              if (firstCharLower === firstCharUpper) {
  
                  // char has no uppercase variant, so it's non-alphabetic
                  return "non-alpha";
              }
              if (firstChar === firstCharLower) {
                  return "lower";
              }
              return "upper";
  
          }
docs: Returns the capitalization state of the string -
  Whether the first character is uppercase, lowercase, or non-alphabetic
  @param {string} str String
  @returns {string} capitalization state: "non-alpha", "lower", or "upper"