There are several ways to install node on any mac, but my recomendation will be to unstal it using brew and nvm.
I think that is the best approach for several reasons:
$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
$ brew install nvm
$ mkdir -p ~/.nvm $ echo $'export NVM_DIR="$HOME/.nvm"\n. "/usr/local/opt/nvm/nvm.sh"' >> ~/.bash_profile
Restart your current terminal
$ source ~/.bash_profile
Install node version 8 or whatever version you want
$ nvm i 8
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