Biome

SuperImpress uses Biome for linting and formatting.

Why Biome

• All-in-One: Replaces ESLint + Prettier with a single tool
• Fast: Written in Rust, significantly faster than JavaScript alternatives
• Consistent: Same tool for linting and formatting ensures consistency
• Zero Config: Sensible defaults with minimal configuration needed

Configuration

Biome is configured in biome.json at the project root:

{
  "$schema": "https://biomejs.dev/schemas/1.9.4/schema.json",
  "formatter": {
    "indentStyle": "tab",
    "indentWidth": 2
  },
  "javascript": {
    "formatter": {
      "quoteStyle": "single"
    }
  }
}

Key settings:

• Tabs for indentation
• Single quotes for strings

Commands

# Check for lint errors
bun run lint

# Fix auto-fixable lint errors
bun run lint:fix

# Format code
bun run format

# Check formatting without writing
bun run format:check

References

• Biome Documentation
• Biome Rules