@repo/biome-config

@repo/biome-config provides a centralized Biome configuration for linting and formatting across the entire monorepo.

Usage

Extend the shared config in your app's biome.json:

apps/my-app/biome.json

{
  "extends": ["@repo/biome-config/biome"]
}

Setting	Value
Indent style	Spaces
Indent width	2
Line width	120
Quote style	Single quotes
Semicolons	As needed (omitted where possible)

Additional rules are enabled for .js, .jsx, .ts, and .tsx files:

Category	Rule	Severity
Accessibility	`useAltText`	Warn
Accessibility	`useValidAriaProps`	Warn
Correctness	`noChildrenProp`	Error
Correctness	`useHookAtTopLevel`	Error
Correctness	`useJsxKeyInIterable`	Error
Security	`noDangerouslySetInnerHtmlWithChildren`	Error

For .ts, .tsx, .mts, and .cts files:

Several TypeScript-handled rules are turned off to avoid duplicate checking (e.g., noConstAssign, noUnreachable).

{
  "css": {
    "parser": { "tailwindDirectives": true },
    "formatter": { "quoteStyle": "single" }
  }
}

Tailwind directives (@tailwind, @apply, etc.) are recognized by the parser.

From the monorepo root:

# Check (lint + format)
bun run format-and-lint

# Check with auto-fix
bun run format-and-lint:fix