I\'m trying this in my ES6 javascript module:
import externalutil from \'https://externalutil.com/js/externalutil.js\';
but it fails with
You cannot import
URL's (as of yet). You should download the file, put it somewhere locally and reference it locally as well.
However in your case, I'd just use a <script />
tag to include it in your html and just access the window
object. Converting it would be more hassle than it would be beneficial.