# Install Yarn globally via npm
npm install -g yarn
# Check Yarn version
yarn --version
# Create a new package.json
yarn init
# Create package.json with defaults
yarn init -y
# Install all dependencies from package.json
yarn install
# Install a package and add to dependencies
yarn add package-name
# Install a specific version
yarn add package-name@1.2.3
# Install a package as dev dependency
yarn add package-name --dev
# Install a package globally
yarn global add package-name
# Install exact version (no ^ or ~)
yarn add package-name --exact
# Remove a package
yarn remove package-name
# Remove a global package
yarn global remove package-name
# Update all dependencies
yarn upgrade
# Update a specific package
yarn upgrade package-name
# Update to latest version (ignoring version range)
yarn upgrade package-name --latest
# Interactive upgrade
yarn upgrade-interactive
# Run a script defined in package.json
yarn run script-name
# Shorthand for running scripts
yarn script-name
# Run start script
yarn start
# Run test script
yarn test
# Run build script
yarn build
# List installed packages
yarn list
# List top-level packages only
yarn list --depth=0
# Check why a package is installed
yarn why package-name
# Show information about a package
yarn info package-name
# Check for outdated packages
yarn outdated
# List cached packages
yarn cache list
# Clean the cache
yarn cache clean
# Get cache directory
yarn cache dir
# Run command in all workspaces
yarn workspaces run build
# Add dependency to specific workspace
yarn workspace workspace-name add package-name
# Run script in specific workspace
yarn workspace workspace-name run script-name
# Generate yarn.lock without installing
yarn install --frozen-lockfile
# Install without generating lock file
yarn install --no-lockfile
# Update the lock file
yarn install --force
# Set a config value
yarn config set key value
# Get a config value
yarn config get key
# List all config
yarn config list
# Delete a config value
yarn config delete key
# Set registry
yarn config set registry https://registry.npmjs.org
# Login to npm registry
yarn login
# Publish a package
yarn publish
# Publish with a new version
yarn publish --new-version 1.0.0
# Logout from registry
yarn logout
# Check for issues
yarn check
# Create a compressed tarball
yarn pack
# Run a command with package binaries available
yarn run env
# Generate license report
yarn licenses list
# Link a local package
yarn link
# Unlink a local package
yarn unlink
# Set Yarn version for project
yarn set version berry
# Enable Plug'n'Play
yarn config set nodeLinker pnp
# Disable Plug'n'Play (use node_modules)
yarn config set nodeLinker node-modules
# Install with immutable lock file (CI)
yarn install --immutable
# Add TypeScript plugin
yarn plugin import typescript