Uses a JSON file to store key/value pairs.
Deletes the value stored for the given key.
Key to delete.
If there was a value to delete.
An iterable of entries in the storage.
Returns the value stored for the given identifier. undefined if no value is stored.
undefined
Checks whether there is a value stored for the given key.
Sets the value for the given key.
Key to set/update.
Value to store.
The storage.
Uses a JSON file to store key/value pairs.