A current answer about root-level groups, and the store's format.
lists is true / false when a current index says, undefined when no current index is available (probe).
lists
true
false
undefined
Readonly
The store's on-disk format when known, else null.
null
Whether lists' answer came from the opened store's own index.
A current answer about root-level groups, and the store's format.
listsistrue/falsewhen a current index says,undefinedwhen no current index is available (probe).