Mastering Claude Code for Non-Developers
Environment Preparation
Preparing Your Workspace
Claude Code runs in your terminal and relies on the runtime environment. Think of Node.js as the engine that allows Claude Code, which is written in JavaScript, to run directly on your computer without needing a web browser. Most Node.js installations automatically include its package manager, npm, which we'll use to install the main tool.
First, let's check if you already have these tools installed. Open your terminal and run these two commands, one after the other:
node -v
npm -v
If you see version numbers for both (for example, v20.11.1 and 10.2.4), you're likely ready to go. Claude Code requires Node.js version 18.0 or higher. If you get a "command not found" error or have an older version, you'll need to install or update it.
Installation by OS
The installation process varies slightly depending on your operating system. You will likely need administrator privileges to run these commands.
For most systems, installing the latest LTS (Long-Term Support) version of Node.js is the safest and most stable option. These commands will handle that for you.
On macOS
If you use Homebrew, the macOS package manager, installation is a single command:
brew install node
On Windows
For Windows users, the best environment for command-line tools is the Windows Subsystem for Linux (WSL). It gives you a full Linux environment integrated into Windows. Once inside your WSL terminal (like Ubuntu), you can use the same commands as a standard Linux system. We'll use nvm (Node Version Manager) which makes it easy to switch between Node versions.
# First, install nvm
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
# Then, install the latest LTS version of Node.js
nvm install --lts
You may need to close and reopen your terminal for the nvm command to become available after the first step.
On Linux (Debian/Ubuntu)
For Debian-based systems like Ubuntu, we can use apt, the native package manager. The sudo command is used to execute the installation with administrative rights.
sudo apt-get update
sudo apt-get install -y nodejs npm
On Linux (Fedora/CentOS)
For RPM-based systems like Fedora, you'll use the dnf package manager:
sudo dnf install -y nodejs
Final Verification
After running the appropriate installation command for your system, close and reopen your terminal window. This helps ensure your system recognizes the new software paths. Now, run the version checks again:
node -v
npm -v
Seeing version numbers for both confirms that your environment is ready. Your system now has the necessary runtime and package manager to install and operate Claude Code.
What is the primary runtime environment required to run Claude Code directly on your computer?
Which command would you use on a macOS computer with Homebrew to install the necessary software for Claude Code?
With Node.js and npm in place, you're prepared for the next step: installing the Claude Code command-line interface itself.