What is the best way to incorporate an npm module in a django-admin widget without the need to install node?

Background

I am working on a Django app and need to create an admin widget. The widget will display text in a unique terminal-style format to show forwarded logs from an analytics process managed by Django (using the django-twined extension).

To achieve this, I plan to utilize a library like terminal-kit or similar that requires npm installation.

Developing the App

Since the app is Docker-based, I want to avoid including the entire node stack in my production image.

One approach could be using a multi-stage docker build, where I install node and necessary libs from NPM in the first stage, then copy the libraries from `node_modules` in the second stage. However, I find this method somewhat slow.

Moreover, as I only intend to use the raw js static assets bundled with the Django app, I'm not sure how to import the module (if possible at all).

The Inquiries

  • Is it feasible to install an npm module without having the complete node stack, hence avoiding complex multi-stage builds?

  • How can I then effectively `import` or `require` the module's contents into vanilla JavaScript for utilization in a Django widget?

  • Overall, is this task achievable? If it seems overly complicated, I may resort to a simpler solution like using a text area with monospace font... yet, I would prefer log highlighting and colors to be accurately displayed in a terminal-like format.

Answer №1

Is it possible to install an npm module without requiring the node stack, thus avoiding complicated multi-stage builds?

To roll up an npm package without the node stack, you can utilize a dev tool like Browserify. Simply roll up the entire package using a command such as:

browserify --require terminal-kit

Browserify will bundle the package into a single JS file that can be easily loaded in the browser. It is important to note that there may be limitations to this method, so experimenting and consulting the Browserify documentation is recommended.

How do I import or require the contents of the rolled-up module into vanilla JavaScript for use in a Django widget?

To include the rolled-up module in a Django widget, you can reference a Django template file within the backend admin class definition. In the template, ensure to include an HTML script tag pointing to the JS file you wish to load. Utilize Django's ability to handle static files during the build process to include the JS file and specify a local resource reference for the template to access the correct location.

Is this generally feasible?

In general, this approach is indeed achievable but results may vary depending on the complexity of the npm package and its intended functionality in the browser.

The following steps can be taken:

  1. Use Browserify to convert the npm package into a single JS file.
  2. Create an HTML file that loads the local JS file and view it in a browser.
  3. Check if the desired commands/context are working correctly in the browser by utilizing the console. Additionally, you can create another vanilla JS file to test alongside.
  4. Include a reference to the JS file in the Django admin template/widget.
  5. Develop custom JS code in the widget that interacts with/showcases the globally instantiated JS script.

This strategy is drawn from personal experience, as I have found success by following these steps. Hopefully, this information proves helpful.

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