Add changeset for CSS Module fixes

Signed-off-by: Charles de Dreuille <charles.dedreuille@gmail.com>
2026-01-29 13:21:26 +00:00
parent aac1f68de4
commit 4d1b7f4093
1 changed files with 11 additions and 0 deletions
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+---
+'@backstage/ui': patch
+---
+
+Fixed CSS Module purity errors for Next.js 16 compatibility
+
+After upgrading to Next.js 16.1.6, the build failed with CSS Module purity errors. Next.js 16 with Turbopack enforces stricter validation requiring global selectors like `[data-theme='dark']` to be combined with local classes.
+
+Changed nested selector structure from `[data-theme='dark'] { .class { } }` to flattened `[data-theme='dark'] .class { }`.
+
+**Affected components:** popover, tooltip