ngrx EntityState.ids.includes() 期望类型为 never 的参数

Question

我有一个带有 ngrx 状态管理的 Ionic Angular 项目。这是我的州定义：

export interface State {
  loaded: boolean;
  loading: boolean;
  invoices: InvoicesState;
  invoicePositions: InvoicePositionsState;
  selectedInvoice: InvoiceModel;
  availableTasks: AvailableTasksModel;
  nextPageUrl: string;
  invoicesFilter: string;
  comments: InvoiceCommentsState;
  selectedComment: CommentModel;
}

export interface InvoicesState extends EntityState<InvoicePreviewModel>{}

export const adapterInvoices: EntityAdapter<InvoicePreviewModel> = createEntityAdapter<InvoicePreviewModel>({
  selectId: (invoice: InvoicePreviewModel) => invoice.id,
  sortComparer: false,
});

...

export const initialState: State = {
  loaded: false,
  loading: false,
  invoices: adapterInvoices.getInitialState({}),
  invoicePositions: adapterInvoicePositions.getInitialState({}),
  selectedInvoice: null,
  availableTasks: null,
  nextPageUrl: null,
  invoicesFilter: null,
  comments: adapterInvoiceComments.getInitialState({}),
  selectedComment: null,
};

我想在满足几个特定条件时对状态进行一些更改。首先，我需要检查具有特定 ID 的实体是否存储在 EntityState.

中

这里是reducer里面发生错误的代码：

  on(InvoicesActions.stateTransitionSuccess, (state, { invoice, invoicePreview }) => {
    let invoices: InvoicesState;

    if (state.invoices.ids.includes(invoicePreview.id)) {
      invoices = adapterInvoices.updateOne({
        id: invoicePreview.id,
        changes: invoicePreview
      }, state.invoices);
    } else {
      // tbd
      // more conditions and logic

    }

    return {
      ...state,
      loaded: true,
      loading: false,
      selectedInvoice: invoice,
      invoices
    }
  }),

includes() 函数出于某种原因需要 never 类型参数，我不明白为什么。这是我得到的错误：

Argument of type 'number' is not assignable to parameter of type 'never'.

Answer 1

发生这种情况是因为 ids 类型是 number[] | string[]，因此您需要在使用前将其转换为数字数组 number[]，或者您可以使用 some而不是像下面这样直接 includes：

if (state.invoices.ids.some((id) => id === invoicePreview.id))

ngrx EntityState.ids.includes() 期望类型为 never 的参数

ngrx EntityState.ids.includes() expects parameter with type never

typescript

ngrx

angular

angular-state-managmement

createentityadapter