Cheatsheets

curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -
sudo apt install -y nodejs

sudo pacman -S nodejs npm

brew install node

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
# OR
wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash

nvm install 20               # Install Node.js v20
nvm install --lts            # Install latest LTS version
nvm use 20                   # Switch to Node.js v20
nvm use default              # Switch to default version
nvm uninstall 18             # Uninstall Node.js v18

nvm ls                       # List installed versions
nvm ls-remote                # List all remote versions
nvm alias default 20         # Set default version
nvm current                  # Show current version

node app.js                  # Run script
node -e "console.log(1+1)"   # Evaluate script string
node --watch app.js          # Run with experimental watch mode
node --check app.js          # Check syntax without executing

node --version               # Print version
node --max-old-space-size=4096 # Increase memory limit to 4GB
node --env-file=.env app.js  # Load environment variables (.env)

npm init -y                  # Initialize project (defaults)
npm install                  # Install all dependencies
npm install pkg              # Install package
npm install -g pkg           # Install globally
npm install --save-dev pkg   # Install dev dependency
npm uninstall pkg            # Remove package

npm update                   # Update packages
npm outdated                 # Check for outdated packages
npm audit                    # Check for security vulnerabilities
npm audit fix                # Fix vulnerabilities
npm cache clean --force      # Clear cache
npx pkg                      # Run package without installing

npm install pm2@latest -g
# OR
yarn global add pm2

pm2 start app.js             # Start application
pm2 start app.js --name "api" # Start with name
pm2 stop all                 # Stop all processes
pm2 restart app_name         # Restart specific process
pm2 reload all               # Zero-downtime reload
pm2 delete app_name          # Delete process from list

pm2 list                     # List all processes
pm2 monit                    # Graphic dashboard
pm2 show app_name            # Show process details
pm2 logs                     # Stream all logs
pm2 logs app_name            # Stream logs for app
pm2 flush                    # Clear all logs

corepack enable              # Enable Corepack (Node.js >=16.10)
corepack prepare yarn@stable --activate
# OR (Legacy)
npm install --global yarn

yarn init                    # Initialize project
yarn add package             # Install package
yarn add package --dev       # Install dev dependency
yarn global add package      # Install globally
yarn remove package          # Uninstall package
yarn upgrade package         # Upgrade package

yarn workspace <name> add <pkg> # Add package to workspace
yarn workspaces run <cmd>       # Run command in all workspaces

curl -fsSL https://bun.sh/install | bash
# Windows: powershell -c "irm bun.sh/install.ps1 | iex"

bun run app.ts               # Run TypeScript/JS file
bun run dev                  # Run 'dev' script from package.json
bun test                     # Run tests
bun repl                     # Start REPL

bun install                  # Install dependencies (fast)
bun add package              # Add dependency
bun add -d package           # Add dev dependency
bun remove package           # Remove dependency
bun upgrade                  # Upgrade Bun

curl -fsSL https://deno.land/x/install/install.sh | sh
# Windows: powershell -c "irm https://deno.land/install.ps1 | iex"

deno run main.ts             # Run local script
deno run https://.../mod.ts  # Run remote script
deno run -A main.ts          # Run with all permissions
deno run --allow-net app.ts  # Run with network permission

deno task start              # Run task from deno.json
deno test                    # Run tests
deno fmt                     # Format code
deno lint                    # Lint code
deno compile app.ts          # Compile to executable