Infinite sum until the result function was called with Javascript

infinite_sum.js

function infinite(fn, ...args) {
  function partial(...args2) {
    return infinite(fn, ...args.concat(args2));
  }

  partial.result = () => {
    return fn(...args);
  };

  return partial;
}

function sum(...args) {
  return args.reduce(((a, b) => a + b), 0);
}

console.log('Infinite SUM')
sumInfinite = infinite(sum)

console.log('---------')
console.log(sumInfinite) // Function
console.log(sumInfinite.result()) // 0
console.log(sumInfinite(1, 2)) // Function
console.log(sumInfinite(1, 2)(3, 50).result()) // 56