A neat trick we can do with es6 array destructuring is swapping out values of two variables without the need of a third temporary variable. Example from es6.io

es6-destructuring-array-value-swapping.js

let inRing = 'Hulk Hogan';
let onSide = 'The Rock';

console.log(inRing, onSide);
/* This might look a bit funky but what's happening is pretty simple: On the right
hand side we've got an array with the original values. As we give an array, we can 
destructure it, which we do on the lefthand side. We destructure the array renaming
the `onSide` value to `inRing`and the `inRing` value to `onSide`*/
[inRing, onSide] = [onSide, inRing];
console.log(inRing, onSide);