Re: 1.07 MB for a "Hello World"?
It might surprise you to learn - it certainly opened my eyes - that the average web "page" requires 2MB of total download.
The actual HTML is negligible. About half the traffic relates to images and the remainder is roughly 50% JavaScript.
In that context, the 1.07MB isn't as horrendous as first appears.
Of course, it might be better to download the complete runtime if you could cache it and use it on multiple pages, but I'm not sure all the bits are there yet.
Or do the work on the server, like in the old days...