I cannot configure jest properly to import modules (setupFilesAfterEnv)

I am using @angular-builders/jest in order to replace karma by jest when testing angular projects. There are 2 libraries that I like to get extra matchers for jest: jest-extended and @testing-library/jest-dom.

I cannot find a way to import automatically the matchers so that I don't have to import them in each spec file.

minimal example to reproduce the problem with jest-extended

First, create an angular project and install jest dependencies

ng new --defaults my-project
cd my-project
yarn add -D jest @types/jest @angular-builders/jest jest-extended

Then edit angular.json to replace builder

...
"test": {
    "builder": "@angular-builders/jest:run"
},

So far, I can run and pass the tests using jest with command

ng test

Now I add a test using one of the jest-extended matchers. In app.component.spec.ts:

...
  it('should work with jest-extended matchers', () => {
    expect([1, 1, 1]).toBeArrayOfSize(3);
  });

Attempt #1

create jest.config.js

module.exports = {
  setupFilesAfterEnv: [
    'jest-extended',
  ],
};

Does not work, I get error TS2339: Property 'toBeArrayOfSize' does not exist on type 'ArrayLikeMatchers<number>'

Attempt #2

use an intermediate setup file; create jest.config.js

module.exports = {
  setupFilesAfterEnv: [
    'my-jest-setup.ts',
  ],
};

with my-jest-setup.ts

import 'jest-extended'

Works! Test passes... BUT as soon as I change something in my spec file

...
  it('should work with jest-extended matchers', () => {
    expect([1, 1, 1]).toBeArrayOfSize(3);
    expect(true).toBeTruthy();
  });

and run the test again, I get the same error as in attempt #1. I suspect a cache issue

Workaround

Use attempt #2 and clear jest cache before each run with

ng test --clearCache && ng test

I don't like this solution because the cache is intended to speed up things and clearing the cache each time has a sensitive impact when there are many spec files. Moreover, I don't think it is possible to clear cache when using jest in watch mode

Sorry, this was a bit long, thanks if you read it to the end