Node + NPM

Node.js is an open-source, cross-platform JavaScript runtime environment. Node.js includes NPM in the installation package as well.

Difficulty: Easy

Installation

• With user admin, update the packages and upgrade to keep up to date with the OS, press "y" and "enter" when needed

$ sudo apt update && sudo apt full-upgrade

• We will use the NodeSource Node.js Binary Distributions repository instructions. Download and import the NodeSource GPG key

$ curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | sudo gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg

• Set the environment variable of the version

$ VERSION=20

• Create deb repository

$ echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$VERSION.x nodistro main" | sudo tee /etc/apt/sources.list.d/nodesource.list

• Run update

$ sudo apt update

• Install Node.js + NPM using the apt package manager

$ sudo apt install nodejs

• Check the correct installation of nodejs

$ node -v

Example of expected output:

> v18.16.0

• Check the correct installation of NPM

$ npm -v

Example of expected output:

> 9.5.1

Upgrade

• With user admin, stop the current dependencies services of the Node + NPM, that are actually BTC RPC Explorer + Thunderhub

$ sudo systemctl stop btcrpcexplorer && sudo systemctl stop thunderhub

• To upgrade simply type this command

$ sudo apt update && sudo apt full-upgrade

If you want to update to the upper version LTS release (see here), e.g. 18.x to 20.x you need to follow the next steps:

• Check the current version installed of the nodejs

$ node -v

• If you have 18.x version, set the environment variable to the new number of versions, for example to 20.x

$ VERSION=20

• Update the current deb repository

$ echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$VERSION.x nodistro main" | sudo tee /etc/apt/sources.list.d/nodesource.list

• Run the update and upgrade command to update the nodejs to the latest version. Press "y" and "enter" when needed

$ sudo apt update & sudo apt full-upgrade

• Check the correct installation to the latest release

$ node -v

• Start BTC RPC Explorer & Thunderhub again

$ sudo systemctl start btcrpcexplorer && sudo systemctl start thunderhub

Uninstall

• To uninstall type this command and press "y" and "enter" when needed

$ sudo apt purge nodejs && sudo rm -r /etc/apt/sources.list.d/nodesource.list && sudo rm -r /etc/apt/keyrings/nodesource.gpg