@testing-library/jest-dom matchers appears to be not available while testing using Deno 2 built-in test runner

[gnietto]

I am testing a web dev project built via only DOM scripting.
I'm using Deno 2.4 with its built-in test runner (no Jest or Vitest), @std/expect (from jsr), @testing-library/dom (from npm) and @testing-library/jest-dom (from npm) like this:

import {expect} from "@std/expect";
import {screen} from "@testing-library/dom";
import * as matchers from "@testing-library/jest-dom/matchers";
expect.extend(matchers);

My problem is I cannot use jest-dom matchers like toBeVisible() or toBeInTheDocument() because appears not to be available while coding. I think the problem could be related to types or configuration according to the LSP feedback, so I would appreciate if you can provide me a list of steps for correctly configuring the testing stuff for using jest-dom matchers once for all.