Question

我严格遵守ngxs / labs immer文档，以适应我的代码并发现这种奇怪的行为。

为什么setState在以下位置询问所有状态属性：

  export class DadesStateModel {
    apartats: IApartat[];
    authors: IAuthor[];
  }  
  (...)
  @Action(SetArticles)
  @ImmutableContext()
  setArticles({setState}: StateContext<DadesStateModel>, {apartat}: SetArticles) {
    setState((state: DadesStateModel) => ({
      state.apartats[state.apartats.findIndex(ap=>ap.Id===apartat.Id)] = apartat;
      return state;
    }))
  }

，并显示以下错误消息：

Argument of type '(state: DadesStateModel) => { state: DadesStateModel; (Missing): IApartat; return: DadesStateModel; }' is not assignable to parameter of type 'DadesStateModel | StateOperator<DadesStateModel>'.
  Type '(state: DadesStateModel) => { state: DadesStateModel; (Missing): IApartat; return: DadesStateModel; }' is not assignable to type 'StateOperator<DadesStateModel>'.
    Type '{ state: DadesStateModel; (Missing): IApartat; return: DadesStateModel; }' is missing the following properties from type 'DadesStateModel': authors.

Answer 1

即使我的回答来得有点晚：由于语法错误，您仍会看到此错误。您将{}括在({})中，并用方括号setState((state: DadesStateModel) => { // Instead of "({" state.apartats[state.apartats.findIndex(ap=>ap.Id===apartat.Id)] = apartat; return state; }); // Instead of "}));"括起来，因此假定您要成为lambda主体的内容是lambda的返回值。只需卸下随附的支架即可。

ngxs实验室沉浸在询问完整状态？

1 个答案: