SlashRouteOf

type SlashRouteOf<TCtor extends AnyHandlerCtor> =
    InstanceType<TCtor> extends {
        __slashRoute?: infer Route extends keyof SlashOptionRegistry;
    }
        ? Route
        : never;

type SlashRouteOf<TCtor extends AnyHandlerCtor> =
    InstanceType<TCtor> extends {
        __slashRoute?: infer Route extends keyof SlashOptionRegistry;
    }
        ? Route
        : never;