Suppose you have a function called pipe:

const addTwoAndSquare = pipe(
  x => x + 2,
  x => x * x);
console.log(addTwoAndSquare(1)); // 9

What is your preferred implementation?

const pipe = (...fns) =>
  x => fns.reduce((z, fn) => fn(z), x);

VS

const pipe = (...fns) => {
  return (x) => {
    let z = x;
    for (let i = 0; i < fns.length; ++i)
        z = fn(z);
    });
    return z;
  };
};