How to improve function call code?

Question

JavaScript

there is a code How to make it more beautiful? const result = f0(f1(f2(f3(1000)),1),'test')

Answer 1

It seems that functional pipelines from libraries like Underscore, Ramda or whatever could be used here. You can also do transpilation using the Babel pipeline operator , which has not yet reached the standard. It all works like this:

// где-то в библиотеке
function pipe(...fns) {
  return function (arg) {
    let result = arg;
    for (let i = 0; i < fns.length; i++) {
      result = fns[i](result);
    }
    return result;
  }
}

// в коде
const result = pipe(
  f3,
  f2,
  _ => f1(_, 1),
  _ => f0(_, 'test')
)(1000);

But I think that the code will become more obvious if it is simply broken into several lines:

const result3 = f3(1000)
const result2 = f2(result1)
const result1 = f1(result2, 1)
const result0 = f0(result2, 'test')

Answer 2

use compose