How to make it easier to write a function?

Question

JavaScript

const f = (data) => {
      return new Promise((resolve) => {
        resolve({
          data: data
        });
      }

Answer 1

Simplify by removing the meaningless promise.
There is nowhere easier:
const f = (data) => ({data});

Answer 2

Alexey Ukolov is right.
But if for some reason you need a promise (for a chain thenthere, or something else), then there is a built-in helper for this: You can also use it with the same success:
const f = data => Promise.resolve({data});
const f = async data => ({data});