AssertAutocompleteRoute

type AssertAutocompleteRoute<
    Route extends keyof SlashRegistry,
    TCtor extends AnyHandlerCtor
> = [Route] extends [AutocompleteRouteOf<TCtor>]
    ? [AutocompleteRouteOf<TCtor>] extends [Route]
        ? TCtor
        : Constructor<
              [
                  "AutocompleteHandler declares a command the AutocompleteRoute decorator does not list",
                  AutocompleteRouteOf<TCtor>
              ]
          >
    : Constructor<
          [
              "AutocompleteRoute does not match the AutocompleteHandler generic",
              Route
          ]
      >;