Importing a lib for use in Node-Red in a Docker

In one of my Node-Red flows, I wanted to use the fuzzyset.js library. This has an npm installer but it didn't work inside the docker. The recommended approach is to install to the /data directory (appdata/nodered) from the host system but as unRAID doesn't support npm, I couldn't do that either.

So, I had a .js library that I needed to manually install and use. Here's how I did it;

First, from unRaid console, I created a 'fuzzyset' folder inside /mnt/user/docker/appdata/nodered/lib/. Then, I copied the fuzzyset.js file to this folder.

Next, I edited this part of the/mnt/user/docker/appdata/nodered/settings.js file to include the library;

 functionGlobalContext: {

      fuzzyset:require('/data/lib/fuzzyset/fuzzyset.js')

    },

Then, I could call and use the fuzzyset functions inside a node-red function like this




  
   var FuzzySet = context.global.get('fuzzyset');


   var a = FuzzySet(someArray);
   var result = a.get("Some String");