How to use done() (async) tests for callbacks in vitest?

First try to use async await.

If that's not possible use a promise:

(see 'done' section) https://vitest.dev/guide/migration.html#migrating-from-jest

  test('test callback', async () =>
    new Promise(done => {
      cb(()=>{
          done(''); // verifies callback was executed
        })
      });
    }));