Need some help using this API

See more:

Python

scripting

testing

Node.js

Frankly, I'm lost in how to approach using the API for:
https://www.npmjs.com/package/broken-link-checker

For instance, the doc give this example:

var htmlChecker = new blc.HtmlChecker(options, {
    html: function(tree, robots){},
    junk: function(result){},
    link: function(result){},
    complete: function(){}
});
 
htmlChecker.scan(html, baseUrl);

How do I use this? How do I run it and where do I pass in URL/ list of URLS

Any advice?

What I have tried:

Running .js file from command line