Severity: Medium
Published: 1 month agoMar 25, 2026
Signal: 43

Biome CLI v2.4.9

2.4.9 Patch Changes #9315 085d324 Thanks @ematipico! - Added a new nursery CSS rule noDuplicateSelectors, that disallows duplicate selector lists within the same at-rule context. For example, the following snippet triggers the rule because…

Official source entry

Biome CLI v2.4.9

From GitHub Releases. The simplified record can be checked against the original wording.

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Why it matters

Biome updated github releases semantics for tooling and developer-workflow. Review the official entry during the next release review.

Who should care

frontend
backend

Affected stack

tooling
developer-workflow
frontend-infra
payments