Mar 16, 2026 · 5 min read

Last updated on Apr 19, 2026

Biome vs ESLint — Which Linter in 2026?

Biome: The Rust-Powered All-in-One

Biome is a Rust-powered toolchain that combines linting, formatting, and code analysis into a single binary. Instead of juggling ESLint for linting and Prettier for formatting — each with their own configuration files, plugin systems, and version conflicts — Biome handles everything in one pass.

ESLint has been the JavaScript linting standard for over a decade. With ESLint 9 introducing flat config and a modernized architecture, it remains a powerful choice. But Biome challenges the status quo by offering near-instant feedback and zero-config defaults that work out of the box.

If you’re building a modern TypeScript project with tools like Vite and Vitest, the question is no longer whether Biome is ready — it’s whether you still need ESLint’s ecosystem. Let’s break down the differences.

Feature Comparison

Feature	Biome	ESLint
Language	Rust	JavaScript
Speed	Up to 100x faster	Baseline
Formatting	Built-in (Prettier-compatible)	Requires Prettier
Configuration	`biome.json` (near-zero config)	`eslint.config.js` (flat config)
TypeScript support	Native, no parser needed	Requires `typescript-eslint`
JSX/TSX	Built-in	Requires plugins
Import sorting	Built-in	Requires `eslint-plugin-import`
Auto-fix	Yes	Yes
Plugin system	Not yet (planned)	Thousands of plugins
CI integration	Single binary, no node_modules	Needs Node.js + dependencies
Editor support	VS Code, IntelliJ	VS Code, IntelliJ, and more
Migration path	`biome migrate eslint` command	N/A

Speed: Biome Is 100x Faster

Biome is written in Rust and processes files in parallel. On real-world codebases, benchmarks consistently show Biome linting and formatting 100x faster than ESLint + Prettier combined.

This isn’t a marginal improvement. On a project with 1,000 TypeScript files, ESLint might take 30 seconds in CI. Biome finishes the same job in under a second. That difference compounds across every commit, every PR check, and every pre-commit hook.

For teams using pnpm workspaces with multiple packages, the speed gain is even more dramatic. Biome processes the entire monorepo without spawning multiple Node.js processes or loading plugin dependencies repeatedly.

The performance comes from Rust’s zero-cost abstractions, parallel file processing, and the fact that Biome doesn’t need to parse JavaScript configuration files or resolve plugin dependencies at startup.

In local development, this translates to instant feedback. Save a file and Biome reports issues before your editor finishes its animation. Pre-commit hooks that once took 10 seconds now complete in milliseconds.

Configuration: Near-Zero vs Flat Config

Biome ships with sensible defaults. A minimal biome.json looks like this:

{
  "$schema": "https://biomejs.dev/schemas/1.9.0/schema.json",
  "organizeImports": { "enabled": true },
  "linter": { "enabled": true }
}

That’s it. No plugin installation, no parser configuration, no compatibility packages.

ESLint 9 improved things significantly with flat config, replacing the confusing .eslintrc cascade. But a typical TypeScript setup still requires:

import eslint from "@eslint/js";
import tseslint from "typescript-eslint";

export default tseslint.config(
  eslint.configs.recommended,
  ...tseslint.configs.recommended
);

Plus you need prettier, eslint-config-prettier, and potentially eslint-plugin-prettier to avoid conflicts between linting and formatting. Biome eliminates this entire category of tooling friction.

Formatting: Built-In and Prettier-Compatible

Biome includes a Prettier-compatible formatter that produces nearly identical output. It supports the same options — print width, tab width, semicolons, quotes — and handles JavaScript, TypeScript, JSX, JSON, and CSS.

The key advantage: no conflicts. With ESLint + Prettier, you need eslint-config-prettier to disable formatting rules that clash. You need to decide whether Prettier runs as an ESLint plugin or as a separate step. These decisions disappear with Biome because linting and formatting share the same AST and run in a single pass.

For teams migrating from Prettier, Biome can read your existing .prettierrc and translate settings automatically via biome migrate prettier.

Plugin Ecosystem: ESLint’s Biggest Advantage

ESLint’s plugin ecosystem is massive. Thousands of plugins cover accessibility (eslint-plugin-jsx-a11y), React hooks (eslint-plugin-react-hooks), testing patterns (eslint-plugin-testing-library), security (eslint-plugin-security), and framework-specific rules for Next.js, Vue, Svelte, and more.

Biome doesn’t have a plugin system yet. It ships with a curated set of built-in rules — covering many common ESLint and Prettier scenarios — but if you need specialized rules for your framework or domain, ESLint is the only option today.

That said, Biome’s rule set is growing rapidly. It already covers the most common eslint:recommended and typescript-eslint/recommended rules. For many projects, the built-in rules are sufficient.

The Biome team has indicated that a plugin system is on the roadmap. When it arrives, it will likely use WASM-based plugins for performance. Until then, the trade-off is clear: fewer rules but faster execution.

When to Use Biome

Biome is the right choice when simplicity and speed are priorities:

New projects where you want a single tool for linting and formatting
Teams that value speed and minimal configuration
CI pipelines where every second counts
Monorepos where ESLint’s startup overhead multiplies
Projects using TypeScript, React, or Node.js without niche plugin requirements
Developers tired of resolving ESLint/Prettier conflicts

When to Use ESLint

ESLint remains the right choice when ecosystem breadth matters:

You depend on specific plugins (accessibility, framework rules, custom lint rules)
Existing large codebases with mature ESLint configurations
Teams that have invested in custom ESLint rules
Projects using Vue, Svelte, or Angular where Biome support is limited
Organizations that need the broadest community support and documentation

Verdict

For new TypeScript projects in 2026, Biome is the better default. It’s 100x faster, requires almost no configuration, and eliminates the ESLint + Prettier coordination problem entirely. One tool, one config file, one command.

ESLint remains essential when you need its plugin ecosystem. If your project relies on eslint-plugin-jsx-a11y, framework-specific rules, or custom lint rules your team has built, ESLint is irreplaceable. Its community has spent years building rules for every edge case imaginable.

The practical approach: start with Biome. If you hit a wall where you need a rule that only exists as an ESLint plugin, add ESLint for that specific concern. Many teams run both — Biome for speed and formatting, ESLint for specialized rules. This hybrid setup gives you the best of both worlds without compromise.

FAQ

Is Biome faster than ESLint?

Yes, dramatically. Biome is written in Rust and processes files in parallel, making it up to 100x faster than ESLint + Prettier combined. On a 1,000-file TypeScript project, Biome finishes in under a second where ESLint might take 30 seconds.

Can Biome replace Prettier?

Yes. Biome includes a built-in formatter that produces Prettier-compatible output and supports the same configuration options. It can even migrate your existing .prettierrc settings automatically via biome migrate prettier.

Does Biome support all ESLint rules?

No. Biome ships a curated set of built-in rules covering the most common eslint:recommended and typescript-eslint/recommended scenarios, but it doesn’t have a plugin system yet. If you need specialized framework or accessibility rules, ESLint is still required.

Should I switch from ESLint to Biome?

If your project doesn’t depend on niche ESLint plugins, switching to Biome gives you massive speed improvements and eliminates ESLint/Prettier configuration complexity. For projects relying on specific plugins like eslint-plugin-jsx-a11y or framework-specific rules, consider running both tools or waiting until Biome’s rule coverage expands.