This function retrieves the user configuration from the browser's local storage.
The user is notified if no saved configuration was found and the flag is stored to the session storage.
Returns [string[], string, number, number]
An array that includes the raw data, data file type, default time, and gap limit.
Throws
This function may throw an error if it fails to parse the user configuration from the local storage.
This function retrieves the user configuration from the browser's local storage. The user is notified if no saved configuration was found and the flag is stored to the session storage.