在自定义定义中引用全局声明的名称空间类型 [英] Refer to global declared namespace type in custom definition

问题描述

这个主题有一个过去的问题，但未发布答案:

There is a past question on this topic, but no answer was posted:

我想为testdouble-jest创建类型，但是其导出函数中的第二个参数是全局jest实例，该实例在@types/jest中声明为顶级声明的命名空间:

I want to make a type for testdouble-jest, but the second argument in its exported function is the global jest instance, which is declared in @types/jest as a top-level declared namespace:

declare namespace jest {
  mock(): something
  // ...
}

以下是这些类型: https: //github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/jest/index.d.ts

如何在test-double.d.ts声明中引用此全局对象?我的声明如下，但部分成功:

How can I refer to this global object in my test-double.d.ts declaration? My declaration looks as follows, but with partial success:

/// <reference types="jest" />
// do i actually need the above directive?

declare module "testdouble-jest" {
  import * as td from "testdouble"; // the testdouble stuff works
  export type TestdoubleJest = typeof td & {
    mock: typeof jest.mock;  // this actually appears to work
  };
  function setupTestdoubleJest(
    testdouble: typeof td,
    jest: typeof jest // this just resolves to any
  ): TestdoubleJest;

  export = setupTestdoubleJest;
}

如果有人知道该怎么做，我将不胜感激！

If anyone knows how to do this, I would really appreciate it!

编辑２:有一些关于DefinitelyTyped的人的例子，它们要么增加了'jest'名称空间，要么使用了它的成员(就像我对jest.mock所做的那样)，但是我找不到一个引用实际全局jest对象.

EDIT ２： There are some examples on DefinitelyTyped of people either augmenting the ‘jest‘ namespace or using its members (like I did with jest.mock), but I can't find one referring to the actual global jest object.

• https://github .com/DefinitelyTyped/DefinitelyTyped/blob/39580cb71a89cde61d217d8d418347c58a2f2103/types/jest-json-schema/index.d.ts

推荐答案

替换

/// <reference types="jest" />

使用

/// <reference types="@types/jest" />

对我有用.

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