OP is asking for a Rust port of Svelte, rather than using Svelte itself and adding WASM code alongside.

I started such a thing a while back, but progressively decided the design wasn’t right for Rust, and so headed in a somewhat different direction, and then shelved the project after deciding to implement what I had had in mind differently.

how much better can it be than doing

`import module from './crate/Cargo.toml'`

from Svelte directly, and get Hot Module Reloading for free ?