The preferred method for installing Node.js is to use the versions available in package managers, such as apt-get, or MacPorts. Package managers make your life easier by helping to maintain the current version of the software on your computer, ensuring to update dependent packages as necessary, all by typing a simple command, such as apt-get update. Let's go over installation from a package management system first.
Installing Node.js on macOS with MacPorts
The MacPorts project (http://www.macports.org/) has been packaging a long list of open-source software packages for macOS for years and they have packaged Node.js. The commands it manages are, by default, installed on /opt/local/bin. After you have installed MacPorts using the installer on their website, installing Node.js is very simple, making the Node.js binaries...