async function clearAll(req, res, next) {
  try {
    await Promise.all([User.remove(), Post.remove()]);

    return res.status(HTTPStatus.OK).send('All collections clear');
  } catch (e) {
    e.status = HTTPStatus.BAD_REQUEST;
    return next(e);
  }
}
Take all your model and clear it

@param {any} req
@param {any} res
@param {any} next
@returns {String} All collections clear