Linter Formatter Init

Set up linting, formatting, and testing for JavaScript/TypeScript projects using Biome 2.3+ (default), Vitest, and Bun.

IMPORTANT: Always uses Biome 2.3+ (latest) - never older versions.

Contract

Inputs:

• Target repository and selected formatter, testing, and hook options

Outputs:

• Configured quality tooling and a summary of changes

Creates/Modifies:

• Only the configuration, scripts, and dependencies selected for setup