Code solution improvement for a ES6 lesson

Contributors
1

Concerning this lesson:

This code is working and it does use array destructuring to swap a and b, but it doesn’t qualify as a solution:
let arr = [a, b];
[b, a] = arr;

The code which is considered as a solution is:
[b, a] = [a, b];

I think both should be valid.

2

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