Hapi querystring issues

package.json

{
  "dependencies": {
    "@hapi/hapi": "^19.1.1",
    "@hapi/joi": "^17.1.0",
    "qs": "^6.9.1"
  }
}

server.js

const Hapi = require('@hapi/hapi');
const Joi = require('@hapi/joi');
const QS = require('qs');

const init = async () => {
    const server = Hapi.server({
        port: 3333,
        host: 'localhost',
        query: {
          parser: query => QS.parse(query) // This won't work because query is an object but QS.parse expect a string
        },
        routes: {
          validate: {
            failAction: (request, h, err) => {
              if (err) console.error(err);
              throw err;
            }
          }
        }
    });

    server.route({
      method: 'GET',
      path: '/test',
      handler: (request, h) => {
        console.log(request.query); // without the options.validate, request.query.status is a string eg: "[a, b]", I'm expecting an array
        return 'ok';
      },
      options: {
        // validate: {
        //   query: Joi.object({
        //     workspaceId: Joi.string(),
        //     status: Joi.array().items(Joi.string().valid('a', 'b')),
        //   })
        // }
      }
    });

    await server.start();
    console.log('Server running on %s', server.info.uri);
};

init();