How can copy elements of arr1 to arr2?

who knows how can i solve this problems?how can copy elements of arr1 to arr2?

const arr1 = ['JAN', 'FEB', 'MAR', 'APR', 'MAY'];
let arr2;
(() => {
  "use strict";
  arr2 = []; // change this line

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Link to the challenge:

Hey @RonnyNdZyh
The name of the challenge itself says you to use spread operator.
See if you can find out how to use spread operator to solve the problem.

Let us know if you still have the problem.

All the best.

thank you, I have solved the problem.
i confused rest operator and spread i got them.