How to Fix could not determine jupyterlab build status without Node.js

Could not determine jupyterlab build status without Node.js error typically occurs when “Node.js is n0t installed on your system, or JupyterLab can’t locate it.”

The main reason for the error is that JupyterLab’s extension system relies on Node.js to handle the installation and compilation of extensions.

The easiest way to fix the could not determine jupyterlab build status without Node.js error is by “installing Node.js in your system.”

How to Install Node.js

On Windows

  1. Download the Installer:
  2. Run the Installer:
    • Open the downloaded .msi file.
    • Follow the installation wizard. Accept the license agreement and keep the default settings unless you have a specific configuration.
  3. Verify Installation:
    • Open the Command Prompt.
    • Type node -v and npm -v to verify both Node.js and npm (Node Package Manager) are installed.

On Mac

  1. Download the Installer:

  2. Run the Installer:
    • Open the downloaded .pkg file.
    • Follow the installation wizard.
  3. Verify Installation:
    • Open the Terminal.
    • Type node -v and npm -v to check the installation.

Alternatively, if you have Homebrew installed, you can simply run brew install node.

On Linux

The installation process varies a bit depending on the distribution. Here’s a general approach using a package manager:

For Debian-based distributions (like Ubuntu)

sudo apt update
sudo apt install nodejs npm

For Red Hat-based distributions (like Fedora):

sudo dnf install nodejs npm

For Arch Linux:

sudo pacman -S nodejs npm
  1. Verify Installation:

    • Open the Terminal.
    • Type node -v and npm -v to confirm the installation.
  2. Using Node Version Manager (nvm):

    • An alternative method for Linux (and also macOS) is to use nvm, which allows you to install multiple versions of Node.js and switch between them.
    • To install nvm, you can use the installation script from their GitHub repository.
    • Once nvm is installed, you can install Node.js with nvm install node.

Alternate solutions

  1. Reinstall JupyterLab:

    • After installing Node.js, you might also need to reinstall JupyterLab to ensure it picks up the Node.js installation. You can do this using pip or conda, depending on your setup:
      • Using pip: pip install --upgrade jupyterlab
      • Using conda: conda install jupyterlab
  2. Check the Node.js Path:
    • If you’ve confirmed that Node.js is installed but still see the error, it’s possible that JupyterLab isn’t finding the Node.js binary. Ensure that Node.js is in your system’s PATH. You can verify this by running node -v in your terminal or command prompt. If it returns a version number, then Node.js is in your PATH.
  3. Manually Specify the Node.js Path:

    • As a last resort, if the above steps don’t resolve the issue, you can manually specify the path to the Node.js binary in JupyterLab’s configuration. This is rarely needed, but it’s an option if the standard installation methods aren’t working.

That’s it!