Spasm - webassembly libary for single page applications

[aberba]

On Sunday, 14 October 2018 at 19:04:51 UTC, Sebastiaan Koppe 
wrote:
> On Sunday, 14 October 2018 at 06:03:10 UTC, Bogdan wrote:
>> Awesome work! I remember that, at some point the 
>> https://glimmerjs.com/ authors wanted to write their vm in 
>> rust for better performance. It looks like D is a new option 
>> for such projects.
>>
>> Bogdan
>
> Thanks, a lot of credits go to LDC for supporting the 
> webassembly backend of LLVM.
>
> I thought about doing a VM as well, specifically because I was 
> afraid of the performance penalty of switching a lot between js 
> and wasm. The idea was to emit all dom operations into one 
> bytebuffer (possibly at compile-time) and then instruct js to 
> execute that.
>
> It turns out jumping between wasm and js isn't really a big 
> deal (at least not anymore), so I ditched that idea to keep 
> things simple.

I saw a recent announcement by the Firefox devs on some massive 
improvements they've made in the js-wasm switching speed. Its 
negligible for most cases...unless probably something crazy. Its 
was very fast...especially for a benchmark of 100 million calls 
with Math.random()

https://hacks.mozilla.org/2018/10/calls-between-javascript-and-webassembly-are-finally-fast-%F0%9F%8E%89/

>
> Plus, there is a good chance that in the near future wasm will 
> be able to call the browsers' api directly.
Have you seen this? 
https://developer.mozilla.org/en-US/docs/WebAssembly/Using_the_JavaScript_API

I'm not sure how limited it is though.