react-material table with typescript 显示通用类型错误

Question

我正在尝试运行 react-material 在 Typescript 项目下。

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

在这个 guest 中，我正在尝试创建一个可重用的 React 组件。（请打开访客查看完整代码）

正如我所说，上面的示例显示了一些错误，这是主页第 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接受字符串的类型:

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

如果有人知道如何完成这项工作，将会很有帮助。

Answer 1

已解决！天哪，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
  }
];

Answer 2

string 实际上不是列类型可接受的类型：

我创建了一个 PR 来解决这个问题，但是如果你要显示一个字符串，你可以省略类型。

Answer 3

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

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

react-material table with typescript 显示通用类型错误

react-material table with typescript shows generic type error

reactjs

typescript

material-ui

material-table