function* mySagas() {
  yield effects.takeEvery(
    rexpress.actionTypes.REQUEST_START,
    function* ({ id }) {
      console.log(id);
      yield rexpress.actions(store).writeHead(id, 400);
      yield rexpress.actions(store).end(id, "pong");
      console.log("pong");
    },
  );
}

function mySagas2() {
  return effects.takeEvery(
    rexpress.actionTypes.REQUEST_START,
    function ({ id }) {
      console.log(id);
    },
  );
}