Interesting tidbit about the author of this blogpost:

Many years ago, on the Deno Discord, this person was posting some really cool PR's they had done to contribute to core.

I checked out their profile, and it turned out to be a 13 year old child (or some similarly astonishing young age)

Neat to see they eventually got picked up by Deno, definitely one of the more talented devs I've ever run across.