https://micrologics.org/blog/architecting-sub-second-javascr...
Also, it is not a competition for the shortest specification. If it was, still good. Jpeg xl spec is about half the size of the original jpeg spec.
It seems like you lose a lot (automatic memory safety, simple language, easy concurrency) and gain very little.
https://micrologics.org/blog/architecting-sub-second-javascr...