ES6 Y Combinator One Liner

Y.js

// http://kestas.kuliukas.com/YCombinatorExplained/
// https://rosettacode.org/wiki/Y_combinator#JavaScript
//
// const factorial = Y(next => (n) => {
//   if (n < 2) return 1;
//   return n * next(n - 1);
// });
// console.log(factorial(5)); // 120

const Y = f => (...args) => f(Y(f))(...args);

export default Y;