Method constructor

(storage: Storage, {
		prefix = '',
		collections = COLLECTIONS as UserDataCollections,
		log = debug,
		userDataCleaner
	}: {
		prefix?: string,
		collections?: UserDataCollections,
		log?: (...args: any[]) => void,
		// `userDataCleaner` is not yet created at the time of creating a `UserData` instance.
		// That's why it's passed as a `boolean` rather than a `UserDataCleaner` instance.
		userDataCleaner?: boolean
	} = {})