How can i use https://www.npmjs.com/package/jsonl in API Action wit nodejs?

ok. what i did so far was:
npm i jsonl
after that i created the folder.

This is the folder structure
image
and the file jsonl.js with that input:

const jsonl = require('jsonl');

exports.jsonl = jsonl;

as i seen in the youtube video it was for a model. do i also need the hjson file for a formatter?

in this thread they only created the slugify.js.

can you tell me what i need to put in my file so that i can select this via the wappler ui?
Or can you give me a tip where i can find the informations?

Thank you very much for your reply