`@types/jest` dependency should be changed to `@jest/types`

• @testing-library/jest-dom version: 5.14.1
• @types/testing-library__jest-dom version: 5.14
• node version: 14
• npm (or yarn) version: yarn 1.2

Problem description:

Looks like Jest v27 types are not supported by @types/jest and were moved to @jest/types.

Suggested solution:

Should @types/testing-library__jest-dom also consider upgrading this dependency?

As I can see @jest/types do support jest < 27. Seems like a safe upgrade.

[rose-m]

We’ve also recently encountered typing issues due to the conflict of Jest 28 vs. the @types/jest things that are referenced from @testing-library/jest-dom. Especially with the issue that the mocked helper previously in ts-jest/utils was moved to jest directly. Jest states to use import { jest } from '@jest/globals'; - however, this will then break jest.mock usage somehow (not sure why).

To work around this I’m using a jest.ts that get’s included with the following namespace augmentation:

import type { jest as globalJest } from '@jest/globals';

declare global {
  namespace jest {
    const mocked: typeof globalJest.mocked;
  }
}

Maybe this helps someone…

[chbdetta]

+1. Looks like @types/testing-library__jest-dom depends on pretty-format@26.6.2 and if jest is upgraded to v27, the two different version of pretty-format is causing problem possibly because pretty-format@27.0.6 exports a different value