The worker API in Javascript is quite a pain to use, but needless to say multithreading is invaluable in many contexts, both in the browser and in Node. I haven

The worker API in Javascript is quite a pain to use, but needless to say multithreading is invaluable in many contexts, both in the browser and in Node. I haven't used this library but it seems to solve a similar problem to other ones in the same space — make writing multithreaded code sane, allowing you to avoid writing a bunch of repetitive boilerplate.