Source map URL should be resolved relative to resource

[jscheid]

Hi,

Suppose my location.href is http://localhost/foo/ and I'm loading /bundle.js which references a source map bundle.js.map using just this relative path (e.g. just the filename).

stacktrace-gps currently resolves the sourcemap URL relative to the current page (implicitly, from what I can see) and will therefore try to load http://localhost/foo/bundle.js.map. However, the URL should be resolved relative to the resource, i.e. to http://localhost/bundle.js.map.

[eriwen]

Fixed by 2004283 🌟