Modify source mapping object attribute 'sources' in map file

[SakshiMehra]

Is there any way of modifying the URL of included JS file path as 'sources' key of source map object in in map files?

[masonconsultancy]

I would also like to be able to do this. The reason I have is that my source files are held in the main project 'Site/Scripts' and the files are generated into wwwroot/scripts/js path. The sourceMappingURL is correct as it looks like this at the bottom of the js file

sourceMappingURL=filename.js.map

but the map files sources looks like this

{"version":3,"file":"filename.js","sources":["../../../Site/scripts/filename.js"]

This then causes problems when I'm debugging as the source files don't exist. I would like the map sources to be pointing to the js files in the wwwroot/scripts/js folder.