function startServers(callback) {
  readyCallback = callback;
  http_server.createServer().listen(HTTP_PORT, function () {
    var testRoot = 'http://127.0.0.1:' + HTTP_PORT;
    const query = new URLSearchParams(queryParams);
    console.log(`Integration  tests: ${testRoot}/tests/integration/?${query}`);
    console.log(`Map/reduce   tests: ${testRoot}/tests/mapreduce/?${query}`);
    console.log(`pouchdb-find tests: ${testRoot}/tests/find/?${query}`);
    console.log(`Performance  tests: ${testRoot}/tests/performance/?${query}`);
    serversStarted = true;
    checkReady();
  });
}
/*.js'],
    debounce(rebuildPouch, 700, {leading: true}));
  watch(['tests/integration/utils.js'],
    debounce(rebuildTestUtils, 700, {leading: true}));
  watch(['tests/performance/*