# Biome @biomejs/biome@2.4.7 — Release & Upgrade Intelligence
- **Product:** Biome (https://biomejs.dev)
- **Version:** @biomejs/biome@2.4.7
- **Released:** Mar 13, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/biome/updates/biomejs-biome-2.4.7/

## Executive Summary (TL;DR)
Biome @biomejs/biome@2.4.7. Source highlight: Added new nursery lint rule `useBaseline` for CSS. The rule reports when CSS properties, property values, at-rules, media conditions, functions, or pseudo-selectors are not part of the configured Baseline tier.

## New Features
- feat(css): add support for SCSS binary expressions in lexer and parser
- feat(js_analyze): noNegationElse support inequality & strict inequality operator
- feat(css): improve scss declaration modifier recovery
- chore: add extra eslint plugin sources
- feat(md): formatter plumbing
- feat(json_analyze): implement noTopLevelLiterals

## Improvements
- chore: improve internal skills
- perf(cli): lock-free storage, and reduce system calls
- perf(inference): reduce type widening

## Bug Fixes
- Added new nursery lint rule `useBaseline` for CSS. The rule reports when CSS properties, property values, at-rules, media conditions, functions, or pseudo-selectors are not part of the configured Baseline tier.
- Added the nursery rule `useImportsFirst` that enforces all import statements appear before any non-import statements in a module. Inspired by the eslint-plugin-import `import/first` rule.
- Fixed `noUndeclaredVariables` from erroneously flagging props only used in the template section in Vue SFCs
- Fixed #9432: Values referenced as a JSX element in Astro/Vue/Svelte templates are now correctly detected; `noUnusedImports` and `useImportType` rules no longer reports these values as false positives.
- Extra rule source references. `biome migrate eslint` should do a bit better detecting rules in your eslint configurations.
- Fixed biomejs/biome-vscode#959: LSP now correctly resolves project directory when `configurationPath` points to a configuration file outside the workspace.

## Upgrade Command
```bash
npm install --save-dev --save-exact @biomejs/biome@2.4.7
```