NamesOfKind

type NamesOfKind<
    Route extends keyof SlashOptionRegistry,
    Kind extends OptionKind
> = {
    [Name in keyof Row<Route>]: Row<Route>[Name] extends {
        kind: Kind;
    }
        ? Name
        : never;
}[keyof Row<Route>];

type NamesOfKind<
    Route extends keyof SlashOptionRegistry,
    Kind extends OptionKind
> = {
    [Name in keyof Row<Route>]: Row<Route>[Name] extends {
        kind: Kind;
    }
        ? Name
        : never;
}[keyof Row<Route>];