import * as elasticsearch from 'elasticsearch'; // Init ElasticSearch connection const client = new elasticsearch.Client({ host: `${config.elasticsearch.host}:${config.elasticsearch.port}` }); // Send a HEAD request client.ping({ // Ping usually has a 3000ms timeout requestTimeout: Infinity, // Undocumented params are appended to the query string hello: 'elasticsearch!' }, error => { if (error) { console.error('elasticsearch is down!'); } }); export default client;