Enable URL rewriting for PostCSS #16965
Merged
+98
−8
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Fixes #16636
This PR enables URL rebasing for PostCSS. Furthermore it fixes an issue where transitive imports rebased against the importer CSS file instead of the input CSS file. While fixing this we noticed that this is also broken in Vite right now and that our integration test swallowed that when testing because it did not import any Tailwind CSS code and thus was not considered a Tailwind file.
Test plan
Added regression integration tests
Also validated it against the repro of @tailwindcss/postcss #16962: