[Codewars] Beginner - Lost Without a Map(8 kyu) / JavaScript

https://www.codewars.com/kata/57f781872e3d8ca2a000007e

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DESCRIPTION:

Given an array of integers, return a new array with each value doubled.

For example:

[1, 2, 3] --> [2, 4, 6]

 

코드

function maps(x){
  return x.map(v => v * 2);
}