Created attachment 247582 [details]
Works in Chrome DevTools, broken in WebKit Inspector
I received a report from a person using http://gaearon.github.io/react-hot-loader/, which in turn uses Webpack, a popular module loader. All the error locations in the WebKit Inspector console were either missing or wrong.
The problems is in the broken sourceURL.
This is not a regression. The links work, they just don’t take you to the sourceURL named resource, and instead take you to the real resource. A valid location, just not the ideal location.
For us, any url:line:column our frontend gets we can compute where we want to show it.
(So you don't have to copy/paste code from the bug description.)