Is rescript/bsc significantly faster than jsoo?

I might be unreasonable here, but Jsoo webgl example : seconds to compile - #8 by hhugo does not feel fast to me.

We are adding a “\n” to a ~400 line file, doing an incremental build. My measurements are 1.6s, your measurements are 0.97s. Either way, this feels slow compared to the likes of esbuild / bsc. In fact, this feels slower than Rust → wasm incremental builds, and makes me hesitant to build largeish (50k loc projects) on this tech.

I understand that jsoo currently goes through various ocaml stages; but I’m really wondering about the costs in compile time.