Biome vs ESLint + Prettier: The Linter Wars 2026

TL;DR

Biome hasn't replaced ESLint + Prettier yet, but the gap is closing fast. Biome lints and formats 25x faster than ESLint + Prettier, ships with 300+ rules, and requires zero configuration. The blockers: no plugin ecosystem, missing a handful of ESLint rules popular codebases rely on, and no Prettier plugin support (SVGO, Tailwind class sorting). For greenfield projects: Biome is the better default. For existing projects with custom ESLint configs: migration cost is real.

Key Takeaways

• Biome: 1.2M downloads/week growing fast, 25x faster, zero config, 300+ rules
• ESLint: 30M downloads/week, 10,000+ plugins, de-facto standard
• Prettier: 20M downloads/week, near-universal formatting standard
• Biome rule coverage: ~80% of ESLint + 90% of Prettier's formatting
• Migration blocker: No eslint-plugin-tailwindcss, eslint-plugin-import, custom rules
• Verdict: Greenfield → Biome; existing complex config → stay on ESLint until Biome v2

---

Downloads

Package	Weekly Downloads	Trend
eslint	~30M	→ Stable
prettier	~20M	→ Stable
@biomejs/biome	~1.2M	↑ Fast growing
oxlint	~400K	↑ Fast growing

---

Biome: The All-In-One Tool

npm install --save-dev --save-exact @biomejs/biome
npx @biomejs/biome init

// biome.json — zero-config to start:
{
  "$schema": "https://biomejs.dev/schemas/1.9.0/schema.json",
  "organizeImports": { "enabled": true },
  "linter": {
    "enabled": true,
    "rules": {
      "recommended": true,
      "correctness": { "noUnusedVariables": "warn" },
      "style": { "useConst": "error" },
      "suspicious": { "noExplicitAny": "warn" }
    }
  },
  "formatter": {
    "enabled": true,
    "indentStyle": "space",
    "indentWidth": 2,
    "lineWidth": 100
  },
  "javascript": {
    "formatter": {
      "quoteStyle": "single",
      "trailingCommas": "es5",
      "semicolons": "always"
    }
  }
}

# Run both lint + format check together:
npx @biomejs/biome check --apply .

# Format only:
npx @biomejs/biome format --write .

# Lint only:
npx @biomejs/biome lint --apply .

Speed Benchmark

Real-world project: 500 TypeScript files

ESLint + Prettier (combined):
  lint:    18.2s
  format:  4.3s
  total:   ~22s

Biome (lint + format):
  total:   0.87s

Speed improvement: ~25x

---

ESLint + Prettier: The Established Standard

npm install --save-dev eslint prettier eslint-config-prettier \
  @typescript-eslint/parser @typescript-eslint/eslint-plugin \
  eslint-plugin-react eslint-plugin-react-hooks \
  eslint-plugin-import eslint-plugin-tailwindcss

// eslint.config.js (flat config — required in ESLint v9):
import js from '@eslint/js';
import tsPlugin from '@typescript-eslint/eslint-plugin';
import tsParser from '@typescript-eslint/parser';
import reactPlugin from 'eslint-plugin-react';
import reactHooksPlugin from 'eslint-plugin-react-hooks';
import importPlugin from 'eslint-plugin-import';
import tailwindPlugin from 'eslint-plugin-tailwindcss';
import prettierConfig from 'eslint-config-prettier';

export default [
  js.configs.recommended,
  {
    files: ['**/*.{ts,tsx}'],
    languageOptions: {
      parser: tsParser,
      parserOptions: {
        project: './tsconfig.json',
      },
    },
    plugins: {
      '@typescript-eslint': tsPlugin,
      react: reactPlugin,
      'react-hooks': reactHooksPlugin,
      import: importPlugin,
      tailwindcss: tailwindPlugin,
    },
    rules: {
      ...tsPlugin.configs.recommended.rules,
      ...reactHooksPlugin.configs.recommended.rules,
      'tailwindcss/classnames-order': 'warn',
      'import/order': ['error', { 'newlines-between': 'always' }],
      '@typescript-eslint/no-explicit-any': 'warn',
    },
  },
  prettierConfig,  // Must be last — disables style rules that conflict with Prettier
];

// .prettierrc:
{
  "semi": true,
  "trailingComma": "es5",
  "singleQuote": true,
  "tabWidth": 2,
  "printWidth": 100,
  "plugins": ["prettier-plugin-tailwindcss"]  // Auto-sorts Tailwind classes!
}

---

Rule Coverage Comparison

Category	Biome	ESLint ecosystem
TypeScript rules	~200 rules	200+ (typescript-eslint)
React hooks	✅	✅ (plugin-react-hooks)
Import ordering	✅	✅ (plugin-import)
Tailwind class sorting	❌	✅ (prettier-plugin-tailwindcss)
Accessibility (jsx-a11y)	❌	✅
Custom rules	❌	✅ (unlimited plugins)
Unicorn rules	Partial	✅ (eslint-plugin-unicorn)
Security rules	❌	✅ (eslint-plugin-security)

---

Migration Path: ESLint → Biome

# Check Biome compatibility before migrating:
npx @biomejs/biome migrate eslint --write

# This reads your .eslintrc and generates biome.json equivalent
# Output shows which rules map and which don't

Migration output example:
  ✅ 47 rules migrated
  ⚠️  8 rules have no Biome equivalent:
    - tailwindcss/classnames-order → Use Prettier plugin instead
    - import/order → Biome has organize-imports (different behavior)
    - jsx-a11y/* → Not yet supported in Biome
    - custom-plugin/my-rule → Custom rules not supported

Hybrid Approach (Practical)

// Use Biome for fast lint+format, ESLint only for gaps:
{
  "scripts": {
    "lint": "biome check . && eslint --max-warnings 0 src/",
    "format": "biome format --write ."
  }
}

// Minimal eslint.config.js — only what Biome can't do:
import tailwindPlugin from 'eslint-plugin-tailwindcss';
import a11y from 'eslint-plugin-jsx-a11y';

export default [
  { plugins: { tailwindcss: tailwindPlugin, 'jsx-a11y': a11y } },
  { rules: {
    'tailwindcss/classnames-order': 'warn',
    ...a11y.configs.recommended.rules,
  }},
];

---

Decision Guide

Choose Biome if:
  → New project with no legacy ESLint config
  → Speed is important (CI time, pre-commit hooks)
  → Don't need Tailwind class sorting or a11y rules
  → Team prefers zero-config defaults

Stay with ESLint + Prettier if:
  → Need eslint-plugin-tailwindcss (class sorting)
  → Accessibility rules (jsx-a11y) are required
  → Custom ESLint rules or plugins
  → Large existing codebase with lots of eslint-disable comments

Hybrid (best of both):
  → Biome for formatting + TypeScript/React rules
  → ESLint for Tailwind sorting + a11y only
  → Significant speed gains with minimal migration friction

Compare Biome, ESLint, and Prettier download trends on PkgPulse.