How to write a plugin?

[jantimon]

Is there any guide to write a plugin?

All I found was a guide on howto build deprecated plugins: https://swc.rs/docs/usage-plugin

[aelbore]

@jantimon hope this helps https://github.com/aelbore/lit-swc-transpiler
i dont have docs for it, let me know if you have any questions :)

[kdy1]

No. Rust-based plugin api is still WIP, mainly because I'm busy working on proprietary software.

[jantimon]

Thanks for your quick response :)

is there any timeline for the rust api?

I don't want to invest time writing ts or js code if it won't work anymore for 2.0 soon

[kdy1]

I don't have any timeline because of time.
Open-source is not rewarding, so I want to focus on some closed-source projects.

[jantimon]

I am sorry to hear and can totally understand what you say..

In that case I'll use the JS api to play around with swc & swc plugins for now and will rewrite it once there is a 2.0 release

Take care :)

[kdy1]

For clarification. (Sorry for my bad English skill)

I'll keep working on open source. The difference is that previously I used almost all of my free time for swc, but I'm going to use some time for closed-source projects.

[kdy1]

I've been thinking about some issues like AST compat problem, and I decided to just implement plugin system under experimental flags and see what happens.

[kdy1]

So the estimate is 1 month at max.

[jantimon]

Wow that sounds amazing - one of my really small OSS projects ships with a babel plugin.. as soon as you reach any state where you need real world feedback let me know and I'll try to port it :)

[vjpr]

Is the plugin API going to be much different to the current Rust internal visitor implementation (e.g. how it is used here: https://github.com/vercel/next.js/blob/canary/packages/next/build/swc/src/styled_jsx/transform_css.rs)?

And do you intend to add convenience helper methods like Babel had?

[kdy1]

The swc_plugin crate will re-export required types.
Helper methods will be provided via direct dependency to swc_ecma_utils from plugin crates, to reduce breaking change of swc_plugin.

[kwonoj]

Please refer #3540 and try new plugin interfaces. We expect this to be an official recommended approach once stablized.