withComposigion.js

const withIntroAndDownload = (base = '') => `معرفی و دانلود ${base}`;

const withIntroAndPurchase = (base) => `معرفی، خرید و دانلود ${base}`;

const withFreeContent = (base) => `رایگان ${base}`;

const withBook = (base) => `کتاب ${base}`;

const withAudioBook = (base) => `کتاب صوتی ${base}`;

const withPodcast = (base) => `پادکست ${base}`;

const compose = (...fns) => (param) =>
    fns.reduceRight((y, f) => f(y), param);

console.log(
  compose(withIntroAndPurchase, withBook)('ملت عشق')
); // معرفی، خرید و دانلود کتاب ملت عشق

console.log(
  compose(withIntroAndDownload, withFreeContent, withBook)('ملت عشق')
); // معرفی و دانلود رایگان کتاب ملت عشق

console.log(
  compose(withIntroAndDownload, withFreeContent, withAudioBook)('ملت عشق')
); // معرفی و دانلود رایگان کتاب صوتی ملت عشق