Yarn

TL;DR

Qué: Gestor de paquetes JavaScript rápido, confiable y seguro.

Por qué: Instalaciones determinísticas, workspaces, plug’n’play, caché offline.

Quick Start

Instalar:

# npm
npm install -g yarn

# Homebrew
brew install yarn

# Check version
yarn --version

Uso básico:

yarn init
yarn add express
yarn install
yarn dev

Cheatsheet

Comando	Descripción
yarn add pkg	Agregar dependencia
yarn add -D pkg	Agregar dep de dev
yarn remove pkg	Eliminar paquete
yarn install	Instalar todas las deps
yarn upgrade	Actualizar paquetes
yarn run script	Ejecutar script
yarn dlx pkg	Ejecutar paquete

Gotchas

Installing packages

# Production dependency
yarn add express

# Dev dependency
yarn add -D typescript

# Global package (Yarn 1)
yarn global add nodemon

# Specific version
yarn add [email protected]

# From git
yarn add git+https://github.com/user/repo.git

Workspaces

// package.json
{
  "private": true,
  "workspaces": [
    "packages/*"
  ]
}

# Install all workspace deps
yarn install

# Run script in specific workspace
yarn workspace @myorg/web dev

# Add dep to workspace
yarn workspace @myorg/utils add lodash

# Run in all workspaces
yarn workspaces foreach run build

Yarn Berry (v2+)

# Enable Yarn Berry
yarn set version berry

# Enable Plug'n'Play
yarn config set nodeLinker pnp

# Or use node_modules
yarn config set nodeLinker node-modules

# Install
yarn install

Configuration (.yarnrc.yml)

# Yarn Berry config
nodeLinker: node-modules

# Registry
npmRegistryServer: "https://registry.npmmirror.com"

# Plugins
plugins:
  - path: .yarn/plugins/@yarnpkg/plugin-workspace-tools.cjs
    spec: "@yarnpkg/plugin-workspace-tools"

Scripts

{
  "scripts": {
    "dev": "vite",
    "build": "tsc && vite build",
    "test": "vitest"
  }
}

# Run script
yarn dev
yarn run build

# Execute binary
yarn exec vitest

# Execute without installing
yarn dlx create-react-app my-app

Useful commands

# Check why package is installed
yarn why lodash

# Upgrade interactive
yarn upgrade-interactive

# Check outdated
yarn outdated

# Clean cache
yarn cache clean

# List packages
yarn list --depth=0

Next Steps

• Yarn Documentation - Documentación oficial
• Yarn Berry - Guía v2+
• Workspaces - Monorepo
• Plug’n’Play - Zero-install