Support custom loader or plugin with Rust

[richerfu]

What problem does this feature solve?

We know that build time not only depends on the AST operations but also on other operations. If we use JS/TS to write custom loaders/plugins, I think it may cause a decrease in compilation speed.

What does the proposed API of configuration look like?

Is it possible to provide a rust crate to write corresponding loaders/plugins based on Rust, load the corresponding crates natively, or build corresponding executable files through napi-rs for loading and use?

[richerfu]

refer: https://www.rspack.dev/guide/introduction.html#compared-with-webpack

[richerfu]

I got it with F&Q: https://www.rspack.dev/misc/FAQ.html#do-custom-plugins-and-custom-loaders-need-to-be-developed-using-rust?

[hyf0]

We currently have no plan for this feature, but feedbacks are welcome.

[ununian]

How about using WebAssembly?