"Invalid Host" error when running in the browser

[MichaelAnckaert]

I'm trying to get http-aws-es working in a browser application using the elasticsearch-js library. My code is currently looking like this but I'm getting a "TypeError: invalid host" in the browser console.

`
let AWS = require('aws-sdk')

  let options = {
    hosts: ['https://my-es-host.es.amazonaws.com'],
    connectionClass: require('http-aws-es'),
    awsConfig: new AWS.Config({
      credentials: new AWS.Credentials('AKA...', 'secret'),
      region: 'eu-central-1'
    }),
    httpOptions: {}
  }

  let es = require('elasticsearch-browser').Client(options)

  es.ping({
    requestTimeout: 30000
  }, function (error) {
    if (error) {
      console.error('elasticsearch cluster is down!')
    } else {
      console.log('All is well')
    }
  })`

Did anyone get a similar setup working in the browser and what am I doing wrong?

[printscreen]

Did you ever find the solution to this problem? I am having the same problem.

[printscreen]

So this may not apply to other people, but I did find the issue for me.
I wrote https://www.npmjs.com/package/elasticulize-cli

I was trying to work with an AWS ECS Container to automatically run a migration. Up till this point I have only ever used it locally with docker-compose.

I ran into your issue where I would get the following error.

(node:776) UnhandledPromiseRejectionWarning: TypeError: Invalid host
    at HttpAmazonESConnector.ConnectionAbstract (/usr/local/lib/node_modules/elasticsearch/src/lib/connection.js:27:11)
    at new HttpConnector (/usr/local/lib/node_modules/elasticsearch/src/lib/connectors/http.js:32:22)
    at new HttpAmazonESConnector (/usr/local/lib/node_modules/http-aws-es/connector.js:20:5)
    at ConnectionPool.setHosts (/usr/local/lib/node_modules/elasticulize-cli/node_modules/elasticsearch/src/lib/connection_pool.js:320:20)
    at Transport.setHosts (/usr/local/lib/node_modules/elasticulize-cli/node_modules/elasticsearch/src/lib/transport.js:451:23)
    at new Transport (/usr/local/lib/node_modules/elasticulize-cli/node_modules/elasticsearch/src/lib/transport.js:68:10)
    at new EsApiClient (/usr/local/lib/node_modules/elasticulize-cli/node_modules/elasticsearch/src/lib/client.js:58:22)
    at new Client (/usr/local/lib/node_modules/elasticulize-cli/node_modules/elasticsearch/src/lib/client.js:101:10)
    at Promise (/usr/local/lib/node_modules/elasticulize-cli/lib/commands.js:40:16)
    at <anonymous>

If you look at line 27, the check of host instanceOf Host was failing. After some debugging, i could clearly prove the host was an instanceOf Host.

My fix was just toying with it and I found the fix. Up till this point, http-aws-es was installed on the container globally. That was the issue. Once i installed it locally to /usr/local/lib/node_modules/elasticulize/node_modules it worked.

I dont know why, but there is something weird going on when http-aws-es is not installed to the local node_modules folder.