Also curious - I'm spinning up a small side project with Rust and Svelte. Was looking in Tauri as a replacement for Electron but wondering what other approaches people have worked with (assuming this is a cross platform desktop app, that is).
I'm using quickjs (rquickjs specifically) to bind GTK's C API to Javascript and adding a light DOM wrapper (get/setAttribute, add/removeEventListener, etc) that covers all the functionality Svelte needs. I've had to make a few modifications to the compiler (<10 lines total) to get binding and CSS working but so far it's been great.
Working in GTK with hot reload and instantaneous esbuild rebuilds is.... insane.
Tauri seems like a nice option. It's not as full-featured as Electron yet but their focus on security is great to see (last I saw they were getting the codebase professionally audited). The main reason I didn't go with it was just that doesn't seem to (yet?) suit my use case with zero-copy data transfer between Rust <-> Browser.
My hope is that by writing most of my backend in Rust, that it'd be easy-ish to switch to Tauri or other options if something changes down the road.
