How to mock a specific overload of a function with Jest in TypeScript?

I am using Jest to mock the fs.promises.readDir function. At first I created a mock with ts-jest and then tried to set up the mock as follows:

import fs from 'fs';
jest.mock('fs');

const mockFs = mocked(fs, true);

describe(..., () => {
  it(..., () => {
    mockFs.promises.readdir.mockResolvedValue(['a.txt']);
  });
});

The problem that I am facing with is that TypeScript can not find the proper overload which returns a promise of a string[] but the one that returns a promise of a Dirent[].

Moreover it also says that mockFs.promises is undefined.

How can I make it work and mock the right function?