Directory Warning
When you are not using git workspaces, the extension will warn you if you if there are any folders detected in the In-Game Scripts
directory.
This is because even when the extension does resolve these modules correctly, they are stored in a temporary directory and will be deleted at your OS discretion.
This folder is located in C:\Users\<User>\AppData\Local\Temp\TabletopSimulatorLua
The warning will go away if you are using a git workspace. Or disabling the warning using the ttslua.misc.disableDirectoryWarning
config.
{
"ttslua.misc.disableDirectoryWarning": "true"
}