The EPiServer.CMS.UI.Sources NuGet package contains all original user interface source files together with uncompressed Dojo and Dijit.
The source package is built as part of every release so it ties quite simply into the continuous release cycle. You can install it the same way you would any other NuGet package from nuget.episerver.com.
In case you ever need to manipulate sources files and then create a customized Dojo build you can use this package. It comes together with all Dojo build tools.
Note that in order to debug the Episerver edit view, you do not need this package. The config change described above is sufficient.
Last updated: Oct 11, 2018