Curry

index.js

const curry =
  (fn) =>
  (...arg) => {
    if (fn.length > arg.length) {
      console.log(fn.length);
      const f = fn.bind(null, ...arg);
      return curry(f);
    } else {
      console.log(fn.length, arg.length);
      return fn(...arg);
    }
  };