Using an npm package in a dashboard template

I have installed the package canvas-gauges as a Node-Red add-on option which seems to be successful.

  - canvas-gauges

I want to use this package in a Node-Red dashboard template node such as

<script src="gauge.min.js"></script>

This doesn’t load - message in the console (host obfuscated) indicates it cannot find the package…

app.min.js:20 GET 404

What is the right path to the package in the add-on?

So it seems it is not possible. The solution if you want to use these packages is to download the javascript and save it directly into a <script> tag within the page header.