file is being assigned a //# sourceMappingURL but already has one

Question

I just notice Firefox console outputs the following error for every single .js/.coffee file in my project (even the packages).

-file- is being assigned a //# sou         


        

Answer 1

For the people using Visual Studio 2013, and have downloaded the jQuery libraries via NuGet, check your jquery-x.x.x.min.js and you'll find the text comment below that's popping this warning on Firefox.

// # sourceMappingURL=jquery-x.x.x.min.map

You can safely remove those lines.