Suggest an editImprove this articleRefine the answer for “Why is Biome needed?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**Biome** is a modern all-in-one tool for working with code in JavaScript/TypeScript projects that combines a linter, a formatter, a code analyzer, and partial project tooling. **Key point:** Biome's goal is to be faster, simpler, and more reliable than the ESLint + Prettier combo, while ensuring consistency and high performance.Shown above the full answer for quick recall.Answer (EN)Image**Biome** is a modern all-in-one tool for working with code in JavaScript/TypeScript projects that combines a **linter**, a **formatter**, a **code analyzer**, and partial **project tooling**. Its main goal is to be **faster, simpler, and more reliable** than the ESLint + Prettier combo, while ensuring consistency and high performance. --- ## What does Biome include? 1. **Linting (code analysis)** Biome checks code for errors, potential bugs, and non-compliance with code-style rules. Essentially, it replaces **ESLint**, but faster and with less configuration. 2. **Code formatting** Biome can fully format code, like **Prettier**, but does it faster. 3. **Parser + Resolver** It uses its own high-performance parser written in Rust that understands modern JS/TS, JSX, JSON, and other formats. 4. **Automatic fixes** It can fix most issues automatically (`biome check --apply`). 5. **Unified configuration** One config instead of two (as before: `.eslintrc + .prettierrc`). --- ## Why are companies switching to Biome? ### 1. **Speed** Biome is written in Rust and runs **tens of times faster** than the ESLint + Prettier combination. The difference is especially noticeable on large monorepos. ### 2. **Less infrastructure noise** A single tool → fewer dependencies → fewer conflicts → less CI time. ### 3. **Simplicity of configuration** Instead of dozens of plugins and rules, as in ESLint, Biome works "out of the box". ### 4. **Support for modern features** Biome quickly adapts to new language capabilities (RSC, TypeScript decorators, new standards). --- ## Typical use cases for Biome ### Linting (error checking) - incorrect imports - unused variables - incorrect JS constructs - potential bugs ### Formatting - a consistent style for the team - no conflicts between linter and formatter - auto-fixes in the IDE/CI ### Use in CI/CD - fast lint check before pushing - format check in pull requests - auto-fixing simple errors ### Monorepo optimization Biome works great in large codebases, where ESLint becomes too slow.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.