Elasticsearch response as string with Node.js client library

elasticsearch-response-string.js

// Working with elasticsearch client 12.1.0
var elasticsearch = require('elasticsearch');

var client = new elasticsearch.Client({
  host: '127.0.0.1:9200',
  log: 'warning'
});

// Override per default deserialize method without JSON.parse()
client.transport.serializer.deserialize = function (str) {
  if (typeof str === 'string') {
    return str;
  }
};

client.search(
  {
    index: 'index',
    type: 'type',
    body: {
      query: {
        match_all: {}
      }
    }
  }, function (err, response) {
    console.log(err || response);
  }
);