After a recent change in unpkg, the use of double slashes (//) in a URL stopped working. Instead of returning the file even though a double slash is used, unpkg returns a error 404.
Example where https://unpkg.com/@hpcc-js/[email protected]/dist/index.min.js tries to load a dependency and generates a URL with a double slash in it:

Which results in this request:

When removing one of the double slashes, the resource loads just fine.