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How to Install DejaOS

Runtime Environment​

DejaOS is a JavaScript runtime designed for embedded devices. No manual installation is required—all devices we provide come with DejaOS pre-installed and ready to use out of the box.

Development Environment Setup​

To develop DejaOS applications on your computer, please prepare the following tools:

  1. Visual Studio Code
    Download: https://code.visualstudio.com/download

  2. Node.js (version 20 or above)
    Download: https://nodejs.org

  3. DejaOS IDE Extension
    This is a VSCode extension. Search for DejaOS IDE in the VSCode Extensions Marketplace, or install directly via:
    👉 DejaOS IDE Extension

  • Once installed, you'll see the DejaOS icon in the VSCode sidebar. Click it to access the project management interface.

DejaOS IDE Extension UI

Command-Line Development​

If you do not need the VSCode extension, or prefer terminals, automation scripts, and AI programming tools, install DejaOS CLI:

npm install -g dejaos-cli

After installation, run dejaos --help from a project root containing app.dxproj to view the available commands.

System Support​

Currently, the development environment supports Windows,MacOS.

Network Requirements​

During development, DejaOS IDE may need to download official JavaScript modules:

  • Online Development: Access the DejaOS module repository to fetch the latest modules and dependencies.
  • Offline Development: Previously downloaded modules are cached locally, allowing continued development without an internet connection.
  • We recommend staying online to ensure you always have access to the latest modules.