3

我正在尝试在 Typescript 项目下运行react-material 。

由于我是 Typescript 的新手,我遇到了一些错误,我不知道如何解决它们。

在这个客人中,我正在尝试创建一个可重用的 React 组件。(请打开客人查看完整代码)

正如我所说,上面的示例显示了一些错误,这是 homePage 第 48 行中的示例:

No overload matches this call.
  Overload 1 of 2, '(props: Readonly<MaterialTableProps<IData>>): KTable<IData>', gave the following error.
    Type '{ title: string; field: string; type: string; }[]' is not assignable to type 'Column<IData>[]'.
      Type '{ title: string; field: string; type: string; }' is not assignable to type 'Column<IData>'.
        Types of property 'type' are incompatible.
          Type 'string' is not assignable to type '"string" | "boolean" | "time" | "numeric" | "date" | "datetime" | "currency" | undefined'.
  Overload 2 of 2, '(props: MaterialTableProps<IData>, context?: any): KTable<IData>', gave the following error.
    Type '{ title: string; field: string; type: string; }[]' is not assignable to type 'Column<IData>[]'.ts(2769)

为什么这个数组显示错误?

columns = [...{
    title: "Birth Place",
    field: "birthCity",
    type: "string" // ERROR ?!
}]

尽管接口明确定义了类型接受字符串:

type?: ('string' | 'boolean' | 'numeric' | 'date' | 'datetime' | 'time' | 'currency');

如果有人知道如何完成这项工作,那将会很有帮助。

4

3 回答 3

4

使用原始字符串值string将被解释为不是正确类型的字符串。为了解决这个问题,将其转换为const.

columns = [...{
    title: "Birth Place",
    field: "birthCity",
    type: "string" as const // ERROR ?!
}]
于 2020-02-21T15:51:56.117 回答
2

解决了 !我的上帝,我花了这么多时间来处理这个打字稿错误......

type IType =
  | "string"
  | "boolean"
  | "numeric"
  | "date"
  | "datetime"
  | "time"
  | "currency";
const string: IType = "string";

const columns = [
  {
    title: "Name",
    field: "name",
    type: string
  },
  {
    title: "Surname",
    field: "surname",
    type: string
  },
  {
    title: "Birth Year",
    field: "birthYear",
    type: string
  },
  {
    title: "Birth Place",
    field: "birthCity",
    // lookup: { 34: "İstanbul", 63: "Şanlıurfa", 1: "Berlin", 2: "Tunis" },
    type: string
  }
];
于 2019-11-08T14:31:08.700 回答
1

string实际上不是列类型可接受的类型:

在此处输入图像描述

我创建了一个 PR 来解决这个问题,但如果你正在显示一个字符串,你可以省略类型。

于 2019-11-15T11:41:38.423 回答