Binds the store to one path on one filesystem.
Injected filesystem access.
Absolute path of the device-tokens JSON file.
Lists the registered push tokens.
The stored tokens, or an empty array when absent or unreadable.
Deletes staged files a killed write left beside the file.
How many were removed, or why the directory could not be read.
Persists Expo push tokens to a JSON file on a shared volume.