// Palindrome check is case sensitive; i.e. Aba is not a palindrome // input is a string const checkPalindrome = (str) => { // check that input is a string if (typeof str !== 'string') { return 'Not a string' } if (str.length === 0) { return 'Empty string' } // Reverse only works with array, thus convert the string to array, reverse it and convert back to string // return as palindrome if the reversed string is equal to the input string const reversed = [...str].reverse().join('') return str === reversed ? 'Palindrome' : 'Not a Palindrome' } export { checkPalindrome }