How to fix npm ERR! code EMISSINGARG npm ERR! Missing required argument: package name in npm

# Correct - includes package name
npm install express
npm install express --save
npm install nodemon -g
npm install --save-dev jest

# Incorrect - missing package name (causes EMISSINGARG)
npm install --save
npm install -g
npm install --save-dev

# Check current version
npm --version

# Upgrade npm to the latest stable version
npm install -g npm@latest

# After upgrading, clear your shell's command cache
hash -r

# Verify the upgrade worked
npm --version

# Install nvm (macOS/Linux)
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.0/install.sh | bash

# Reload your shell configuration
source ~/.bashrc  # or ~/.zshrc for macOS

# Install the latest LTS Node.js (includes modern npm)
nvm install --lts

# Verify installation
node --version && npm --version

# Clear the npm cache
npm cache clean --force

# Delete node_modules and package-lock.json
rm -rf node_modules package-lock.json

# Reinstall all dependencies
npm install

# If installing a specific package, now try with correct syntax
npm install express --save

# Check global npm config
cat ~/.npmrc

# Check project-level config
cat .npmrc

# Check npm configuration
npm config list

# Reset to defaults if needed
npm config set registry https://registry.npmjs.org/

# Create a temporary test directory
mkdir -p ~/npm-test
cd ~/npm-test

# Initialize a new npm project
npm init -y

# Try installing a common package
npm install lodash

# Check that package.json was updated
cat package.json