If you're working on more than one projects or you need to switch to your old project there is a chance you will have to change your node.js version. There might be a few dependecnies that will work only on a specefic node.js version. Use
nvm to change your node.js versions.
If you already do not have
nvm installed. Downlaod and install the latest version of nvm.
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.8/install.sh | bash
Check your nvm version by
To download and install new version of node.js run
nvm install 8.2 . Replace 8.2 with the version number you need.
To check what versions of node.js are installed on your system run
nvm ls. This will list out all the versions you have installed.
To switch to any node.js version you need use
nvm use 8.2
If you do not want any particular node.js version you can uninstall it by
nvm uninstall 8.2
You can set the default node.js version by setting an alias
nvm alias default v9.3.0