} else {
			panic("internal error: multiple main modules present outside of workspace mode")
		}
	}
	return mms.versions[0]
}

func (mms *MainModuleSet) GetSingleIndexOrNil() *modFileIndex {
	if mms == nil {
		return nil
	}
	if len(mms.versions) == 0 {
		return nil
	}
	return mms.indices[mms.mustGetSingleMainModule()]
}