Only emit styles.css when modified during watch mode

[cgatian]

Description

I'm requesting a way to hook into panda cssgen --watch to prevent styles.css from being written to disk if the content hasn't changed.

Problem Statement/Justification

We are trying to fit Panda into our very large ecosystem and are running into an issue when the generated styles.css is rewritten to disk even if there hasn't been a style change. This causes Webpack to perform two compilations. The first is for the JSX change, and the second is for panda cssgen writing the styles.css. We were using the postCSS plugin, but moved away from it due to HMR performance.

When an actual style change is made causing a different style.css content, we are OK with the double-compilation that occurs, as that's expected. We want to avoid a second pass of HMR updates if possible.

Proposed Solution or API

My first thought was to inspect the final output of styles.css and compare it to the previous run using the cssgen:done hook. However, this hook doesn't provide a way to bypass or skip writing to disk.

Alternatives

No response

Additional Information

No response