Currently resolveBaseUrl() which figures out where jsconfig.json lives is defined as a static method on the ModuleLoader. In SERVER-97251 we needed to get the resolved base URL at a top level - this required a lot of plumbing to get the base URL from ModuleLoader -> Scope implementation -> ... Scope abstract class -> Mongo main function.

It may be better to move the function to place closer to the higher level, such as the Engine.