Currying functions: multiply all elements in an array.js

/*
Description:
To complete this Kata you need to make a function multiplyAll/multiply_all which takes an array of integers as an argument. This function must return another function, which takes a single integer as an argument and returns a new array.

The returned array should consist of each of the elements from the first array multiplied by the integer.

Example:

multiplyAll([1, 2, 3])(2) = [2, 4, 6];
*/

function multiplyAll(arr){
  return function(num){
  return arr.map(v=>v*num)
  }
}