问ionic+firebase+elasticsearch不能用elasticsearch.js

EN

const client = new elasticsearch.Client({
  host: [
    {
      host: '35.192.45.130//elasticsearch',
      auth: 'user:password',
      protocol: 'http',
      port: 80
    }
  ]
});
//

await client.ping({
  // ping usually has a 3000ms timeout
  requestTimeout: 1000
}, function (error) {
  if (error) {
    console.trace('elasticsearch cluster is down!');
  } else {
    console.log('All is well');
  }
});