Server is not closed properly with Jest

[fabiopaiva]

When used with Jest, it keeps complaining about keeping the server alive.

A worker process has failed to exit gracefully and has been force exited. This is likely caused by tests leaking due to improper teardown. Try running with --runInBand --detectOpenHandles to find leaks.

Jest did not exit one second after the test run has completed.

This usually means that there are asynchronous operations that weren't stopped in your tests. Consider running Jest with `--detectOpenHandles` to troubleshoot this issue.

jest --runInBand --detectOpenHandles

Jest has detected the following 1 open handle potentially keeping Jest from exiting:

  ●  TCPSERVERWRAP

      29 |     };
      30 |     server = http.createServer(requestHandler);
    > 31 |     url = await listen(server);
         |                 ^
      32 |   });
      33 | 
at Promise (node_modules/test-listen/index.js:4:7)
      at module.exports (node_modules/test-listen/index.js:1:51)
      at Object.<anonymous> (pages/api/status/__tests__/status.test.ts:31:17)

this is my code

beforeAll(async () => {
    server = http.createServer(requestHandler);
    url = await listen(server);
});

afterAll((done: () => void) => {
    server.close(done);
  });

any idea why it's not closing the server?