Thanks for the link, that's a great read.

I don't quite grasp the immediate consequences of this - does this mean that I can use threads instead of subpeocesses if I want to parallelize my program beyond one core?

Oops, thanks for noticing :) updated the title.

I think that the evaporation in theory is able to cool the room, the heat energy is transferred into launching a bunch of water molecules airborne so to speak. Hanging some wet towels around would also do that.

However, the performance of such small devices is probably not sufficient to significantly cool a room, and it has a lot of drawbacks (filter gets mouldy easily, ...)

Here's an excellent video about these swamp coolers: https://youtu.be/2horH-IeurA (he has many videos on heat pumps and stuff)

TypeScript also has the type after the method/function, I think to make it easier to re-use and port existing JavaScript code.