• Install and update npm

  sudo apt-get install npm    ## Will pull NodeJS
  sudo npm install -g n     
  sudo n latest

• References: how can I update Nodejs, and install Ubuntu

• Installing from the installer

• Installing with the CLI

  iex (new-object net.webclient).downstring(‘https://get.scoop.sh’)
  scoop install nodejs

• Installing from nodist

brew install npm

• Avoid installing packages (i.e. using npm install) outside of npm hierarchies (places where no package.json is present). Otherwise this will install the package in your homedirectory which might provoke later collisions.
• In case of trouble clear your npm cache (refer below)

Once npm is installed, swsitching npm version can be done with npm itself e.g.

npm install -g [email protected]

In a similar fashion updating (to lastest) nom can be done with

npm install npm@latest -g

Ubuntu note: you might need to sudo e.g. sudo npm install -g [email protected]

• List all the globally installed packages: npm list -g --depth=0

• Clearing the cache: npm cache clean --force Note that the cache is located in ~/.npm on Posix

• List packages within a directory: npm ls