**Biome** (Rust) is the single-tool replacement for ESLint + Prettier — ~25x faster, 95%+ Prettier-compatible. Use Biome for new projects. Stay on ESLint 9 (flat config required) + Prettier 3 only when you need a niche plugin Biome doesn't have. Oxlint is the Rust ESLint-alternative if you want even faster linting separate from formatting.
