Mod zips with multiple folders in root

[moon69]

In the case where there are multiple valid folders in the root of a mod zip, how does Factorio choose which folder to use?
EG:

Code: Select all

TestMod_1.0.0.zip
	│
	├───FolderA
	│   │   info.json
	│   │   ...
	│
	├───TestMod
	│   │   info.json
	│   │   ...
	│
	└───TestMod_1.0.0
	    │   info.json
	    │   ....