Why I Replaced ESLint and Prettier with Biome: A Rust-Powered Alternative

I Replaced ESLint and Prettier with Biome

Joodi replaced the classic ESLint and Prettier combo with Biome. Biome formats code approximately 35 times faster than Prettier when processing over 170,000 lines of code.

Why This Matters

Maintaining two separate tools for linting and formatting creates configuration drift, plugin conflicts, and slower checks. Biome unifies both tasks under a single Rust binary, eliminating synchronization issues while delivering near-instant performance in real-world projects.

Key Insights

• • Speed: Official benchmarks show Biome formats ~35x faster than Prettier on an Intel Core i7-1270P (171,127 lines across 2,104 files), per the developer’s account from July 2026.
• • Unified config: One tool handles both linting and formatting using the same parser, so they never disagree; no more juggling multiple config files or plugins.
• • High compatibility: Formatter is about 97% compatible with Prettier; linter includes hundreds of rules inspired by ESLint and TypeScript ESLint.
• • Production adoption: Companies like Vercel, Cloudflare, Discord, Microsoft, and Google use Biome in production.

Practical Applications

• • Use case: Teams using JavaScript/TypeScript can run biome format and biome lint as a single command to replace both ESLint and Prettier workflows.
• Pitfall: Assuming full drop-in replacement — the formatter is ~97% compatible with Prettier but may require minor adjustments for edge cases in formatting style.
• • Use case: Large monorepos benefit from near-instant checks that previously took seconds.
• Pitfall: Relying solely on default linter rules without reviewing them may miss project-specific conventions that custom ESLint plugins provided.

References:

• https://dev.to/joodi/i-replaced-eslint-and-prettier-with-biome-1oi5