Polindrom

polindrom.js

const polindrom = 'Я не !! , !!!стар, брат Сеня';
let polindromPrepare = '';
let comparePolindrom = '';

function compose(...funcs) {
  return [].reduceRight.bind(funcs, (prev, func) => func(prev));
}


/**
 *
 * @param str
 * @returns {Array|*}
 */
function splitPolindrom(str){
  return str.split(/[\s]|[\,\.\!\?]/gi)
}

/**
 *
 * @param polindromArr
 * @returns {Array.<T>|*}
 */
function exceptEmptyProperty(polindromArr) {
  return polindromArr.filter(s => s.length);
}

/**
 *
 * @param polindromArr
 * @returns {*}
 */
function joinPolindrom(polindromArr) {
  return polindromArr.join('').toLowerCase();
}

/**
 *
 * @param str
 * @returns {string}
 */
function reversePolindrom(str) {
  return str.split('').reverse().join('');
}

polindromPrepare = compose(
    joinPolindrom,
    exceptEmptyProperty,
    splitPolindrom
)(polindrom);
comparePolindrom = compose(
    reversePolindrom,
    joinPolindrom,
    exceptEmptyProperty,
    splitPolindrom
)(polindrom);

console.log(polindromPrepare === comparePolindrom);