Biome 2.3: Complete Vue, Svelte & Astro Support for Code Formatting

Introduction

The latest Biome 2.3 release marks a significant milestone for modern web development workflows, delivering comprehensive support for Vue, Svelte, and Astro files. This update transforms Biome from a JavaScript-focused tool into a versatile multi-framework solution that handles formatting, linting, and code quality across today's most popular frontend technologies.

Expanded Framework Support

Biome 2.3 now provides complete formatting and linting capabilities for Vue single-file components, Svelte files, and Astro components. The tool intelligently processes JavaScript, TypeScript, and CSS within script and style tags, maintaining consistent code quality standards across different framework syntaxes. This enhancement positions Biome as a compelling alternative to specialized code formatter tools while integrating seamlessly with modern build tool pipelines.

Enhanced HTML and CSS Features

Beyond framework support, Biome 2.3 introduces refined HTML formatting options including customizable indentation controls. The release also brings compatibility with Tailwind CSS v4, ensuring developers can maintain consistent styling practices. These improvements make Biome particularly valuable for teams working with static site generator projects where HTML structure and CSS organization are critical.

Developer Experience Improvements

The update includes significant enhancements to the React domain and provides greater flexibility with skip and only flags, allowing developers to fine-tune their linting rules. These changes demonstrate Biome's commitment to becoming a comprehensive code linter that adapts to diverse project requirements while maintaining performance and reliability.

Pros and Cons

Advantages

• Unified toolchain for multiple frameworks reduces setup complexity
• Consistent code formatting across Vue, Svelte, and Astro projects
• Enhanced HTML formatting with customizable indentation options
• Tailwind CSS v4 compatibility for modern styling workflows
• Improved skip and only flags for precise linting control
• Single configuration file manages all supported languages
• Performance optimizations maintain fast processing speeds

Disadvantages

• Learning curve for teams transitioning from framework-specific tools
• Limited plugin ecosystem compared to established linters
• Some edge cases in complex component structures
• Documentation gaps for advanced configuration scenarios

Conclusion

Biome 2.3 represents a strategic evolution toward becoming the definitive code quality tool for modern web development. By embracing Vue, Svelte, and Astro alongside existing JavaScript and TypeScript support, Biome addresses the fragmented tooling landscape that often challenges development teams. The enhanced HTML formatting and Tailwind v4 compatibility further solidify its position as a comprehensive solution that integrates well with contemporary CI/CD tool workflows and development environments.