Useful npm commands and tricks

## npm-commands.md

      
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    npm v3.10 - ◾️

If you are learning npm then i would suggest to go for yarn, dont waste your time in learning npm

⚠️ This gist is outdated, but most of the commands are still relevant.
Update npm itself
npm install -g npm
# Downgrade to a specific version
npm install -g npm@2

Check npm version
npm --version

Install a package
# Local 
npm install package-name

# Local + make an entry in package.json as dependency
npm install package-name --save

# Install specific version of a package
npm install package-name@1.2.3

# Global
npm install -g package-name

Un-install a package
# Local
npm uninstall package-name

# Global
npm uninstall package-name -g

Get package info
# Home page
npm home package_name
# Github repo
npm repo package_name

Check for outdated packages in package.json
# Local
npm outdated

# Global
npm outdated -g

# Production only
npm outdated --prod

List installed packages
# Local with tree
npm ls

# Local - only parent
npm ls --depth=0

# Global - only parent
npm ls -g --depth=0

# List production packages only
npm ls --prod


Remove un-used packages from node_modules folder
npm prune

# Remove all devDependencies from node_modules 
npm prune --production

Update all packages listed in package.json
npm update

Update a single package
npm update package_name

Remove duplicate packages from node_modules
npm dedupe

List packages in cache
npm cache ls

Clean npm cache
npm cache clean -f

💡 Bump version number in package.json and create a git tag automatically
npm version 1.2.3

Lockdown package versions for production
npm shrinkwrap
# Also include devDependencies
npm shrinkwrap --dev

Run npm in production (will not download devDependencies)
npm install --only=production

Install a package from github
npm install git://github.com/user-name/package-name.git#v0.1.0
# OR
npm install user/repo#v1.0.1

Install a package from local cache
npm install --cache-min 999999 package-name

View package info from its package.json file
npm view package_name property_in_json

npm install -g without sudo
mkdir ~/.npm-global
npm config set prefix '~/.npm-global'
chown -r user_name '~/.npm-global'

Some npm global configs
npm config set save-prefix ~
npm config set save-exact true
npm config set engine-strict true
npm config set ignore-scripts
npm config set init.author.name your_name  
npm config set init.author.email your_email  

Enable Auto completion
npm completion >> ~/.bashrc


Package.json extended docs
Package.json cheatsheet
Validate package.json
npm alternative - yarn