As someone who uses bun,deno & cloudflare workers, I want to say that atleast in bun, the wasm part actually happens itself in js and bun just runs that js using javascriptcore which is definitely not optimized as it is stated by Bun docs themselves (https://bun.sh/docs/runtime/loaders#wasi)

Also I am still not sure how you are thinking that this project is similar to Bun.

Bun is for javascript, somebody runs wasm in js and that on bun...

Faasta runs wasm directly and you would need to use javy to actually run js in Faasta https://github.com/bytecodealliance/javy

Its sort of like a->b or b->a and faasta is way more leaner and better... Though bun is good if you are all Typescript.

Still I am sure I am not able to explain myself clearly, so do ask me something if you think I haven't explained quite properly and I am obviously sorry about that!

(Side note: but my main gripe with deno is that I have to specify all of these permissions and its still not a 1:1 equivalent to nodejs , like its very close still though so I still used bun and I actually used just today bun to install pnpm and then install wrangler and then remove pnpm and install via bun because for some reason wrangler doesn't recognize bun as package manager but whatever right)

That this is like Bun is a stretch. This runs anything directly that can compile to WASI P2. Bun polyfills wasi-js to run WASI P1 inside JS.