Use the official source
Go to the official Node.js downloads page. It shows the current install steps.
Open it from iTerm2
Type only the lines marked TYPE THIS. Do not type lines marked MAC REPLIES or NOTE.
TYPE THIS
open https://nodejs.org/en/download/NOTE
The browser opens nodejs.org. This is where you copy the install block later.One word you may see: curl
The official Node.js command may include curl. curl downloads from a web address. For this course, only trust nodejs.org.