Variable saved`Const`

saved: {
    add: (item: CommandBarOption) => void;
    clear: () => void;
    subscribe: (
        this: void,
        run: Subscriber<CommandBarOptionList>,
        invalidate?: () => void,
    ) => Unsubscriber;
    update: (this: void, updater: Updater<CommandBarOptionList>) => void;
} = ...