Overview

Yarn package manager skills with dependency validation hooks for Claude Code.

Features

• Automatic dependency sync: Ensures yarn install runs when package.json or yarn.lock changes
• Smart caching: Only runs when relevant files have changed
• Frozen lockfile support: Tries --frozen-lockfile first for CI-like behavior, falls back to regular install

Installation

han plugin install jutsu-yarn

Hooks

install (Stop hook)

Automatically runs when you stop Claude Code to ensure dependencies are in sync:

• Detects directories containing yarn.lock
• Only runs if package.json or yarn.lock have changed since last successful run
• Attempts yarn install --check-files --frozen-lockfile first
• Falls back to yarn install if lockfile needs updating

Configuration

You can customize the hook behavior in your project's han-config.yml:

jutsu-yarn:
  hooks:
    install:
      enabled: true
      # Override the command if needed
      # command: "yarn install"

To disable the hook for a specific project:

jutsu-yarn:
  hooks:
    install:
      enabled: false