---
name: "biome-linter-formatter-rust"
description: "Format and lint JavaScript, TypeScript, and JSON in milliseconds using Rust-powered Biome."
metadata:
  author: "Biome"
  version: "1.0.0"
  runtime_compatibility:
    - "codex"
    - "claude-code"
    - "cursor"
    - "windsurf"
triggers:
  - "configure biome.json"
  - "run biome check write"
  - "replace prettier eslint biome"
permissions:
  fs_read: true
  fs_write: "workspace"
  shell_exec: false
  net_access: false
---

# Biome Toolchain Fast Rust-Based Linter and Formatter

Configures Biome (successor to Rome): authoring biome.json, configuring formatting rules (indentStyle, lineWidth), linter rules (recommended, suspicious, style), and running biome check --write.

## When to Invoke
Invoke this skill whenever you need to:
- configure biome.json
- run biome check write
- replace prettier eslint biome

## Execution SOP & Rules
1. Initialize: npx @biomejs/biome init to generate clean biome.json configuration file.
2. Configure rules: 'linter': { 'enabled': true, 'rules': { 'recommended': true } }.
3. Run check and format: npx @biomejs/biome check --write src/.
4. Integrate into VS Code via the official Biome extension for instantaneous format-on-save.

## Verification Checklist
- Run local linting, syntax validation, and type-checks before reporting completion.
- Ensure all created or modified files adhere to workspace boundaries and avoid uncommitted secrets.
- Verify tests or build commands exit cleanly with return code 0.