fix(builder)!: align postcss object behavior with Rsbuild#8310
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chenjiahan merged 4 commits intomainfrom Feb 5, 2026
Merged
fix(builder)!: align postcss object behavior with Rsbuild#8310chenjiahan merged 4 commits intomainfrom
chenjiahan merged 4 commits intomainfrom
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chenjiahan
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Summary
Align postcss object behavior with Rsbuild, make postcss object override instead of merge.
The postcss object handling in Modern.js is currently inconsistent with Rsbuild:
This divergence was accidentally introduced during the upgrade to Rsbuild 1.x. 58f2868#diff-a86e848c67b89f2f9412c8fee114477c0ed805a5607500d47ddcebd5429595a5R67-R70
To maintain the previous behavior, several compatibility patches were later added in uni-builder, which increased complexity and maintenance cost.
This PR aligns Modern.js with Rsbuild by updating the postcss object behavior to use override semantics, matching Rsbuild’s configuration model.
Related Links
https://rsbuild.rs/config/tools/postcss#object-type
Checklist
pnpm run change.