message: types: remove unused generic
diff: @@ -31,8 +31,6 @@ export function isStatefulPlugin<S extends StateDescriptor>(
  return typeof (plugin as StatefulPlugin<S>).state !== 'undefined'
  }
  -export function isStatelessPlugin<S extends StateDescriptor>(
  - plugin: Plugin<S>
  -): plugin is StatelessPlugin {
  +export function isStatelessPlugin(plugin: Plugin): plugin is StatelessPlugin {
  return !isStatefulPlugin(plugin)
  }
  