I tried resolving the “Use the spread operator to evaluate arrays in place” challenge, a little bit differently than the solution provided. I had the same result. And I am curious as to why my approach might not be acceptable.
This is my code:
const arr1 = [‘JAN’, ‘FEB’, ‘MAR’, ‘APR’, ‘MAY’];
arr2 = .concat(…arr1); // Change this line