Use destructuring for one-line var swapping

[mAAdhaTTah]

This is just a stylistic thing, but this can be simplified to one line. More info (#4 in the list). Up to you if you want it.

[gaearon]

This doesn’t seem to pass lint. In general, we prefer to avoid stylistic changes because they don’t bring much benefit, and sometimes introduce subtle errors. But thanks for the PR!