code for connecting to elastic cloud

const elasticsearch = require('elasticsearch');
const getElasticClient = () => {
  // const esClient = new elasticsearch.Client({
  //   host: 'localhost:9200',
  //   log: 'info'
  // });
  const esClient = new elasticsearch.Client({
    hosts: [
    //   'https://elastic:mM320Lv403eWrtQKXA3VWgfl@79c3a93ce95743f2b6d28add4db92cd8.ap-southeast-1.aws.found.io:9243/']
    });
  return esClient;
};


Error i keep getting whenever i start the code is

ERROR: 2018-11-23T05:33:01Z
  Error: Request error, retrying
  HEAD http://localhost:9200/ => connect ECONNREFUSED 127.0.0.1:9200
      at Log.error (D:\newOg-tk\og-tk3\og-tk\node_modules\elasticsearch\src\lib\log.js:226:56)
      at checkRespForFailure (D:\newOg-tk\og-tk3\og-tk\node_modules\elasticsearch\src\lib\transport.js:259:18)
      at HttpConnector.<anonymous> (D:\newOg-tk\og-tk3\og-tk\node_modules\elasticsearch\src\lib\connectors\http.js:163:7)
      at ClientRequest.wrapper (D:\newOg-tk\og-tk3\og-tk\node_modules\lodash\lodash.js:4949:19)
      at ClientRequest.emit (events.js:180:13)
      at Socket.socketErrorListener (_http_client.js:395:9)
      at Socket.emit (events.js:180:13)
      at emitErrorNT (internal/streams/destroy.js:64:8)
      at process._tickCallback (internal/process/next_tick.js:178:19)