NodeJS

curl --silent --location https://rpm.nodesource.com/setup_7.x | bash -

https://nodejs.org/en/download/package-manager/#enterprise-linux-and-fedora

NVM

yum remove nodejs npm
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.2/install.sh | bash
source ~/.bashrc
nvm --version
nvm install stable
nvm install 4.8.3