elasticsearch.js, Bluebird, and AWS Elasticsearch with TypeScript

README.md

A quick example demonstrating how to use elasticsearch.js, Bluebird, and AWS Elasticsearch with TypeScript.

You'll need to install a few dependencies and types:

npm install --save @types/elasticsearch @types/http-aws-es elasticsearch http-aws-es bluebird

If you're using AWS Elasticsearch, provide an ES_TYPE environment variable set to aws, as well as values for AWS_ACCESS_KEY, AWS_SECRET_KEY, and AWS_REGION. (I make this configurable so it's easy to point applications at a local ES instance when developing/testing locally, and at AWS when deployed to production)

index.ts

import { Client, ConfigOptions } from 'elasticsearch';
import * as HttpAmazonESConnector from 'http-aws-es';
import * as Bluebird from 'bluebird';

// Let TypeScript know that elasticsearch will return Bluebird promises
declare module 'elasticsearch' {
  type Promise<T> = Bluebird<T>;
}

const config = <ConfigOptions> {
  apiVersion: '5.5',
  host: process.env.ES_HOST,
  defer: function() {
    return Bluebird.defer();
  }
};

const type = process.env.ES_TYPE;
if (type === 'aws') {
  config.connectionClass = HttpAmazonESConnector;
  config.amazonES = {
    accessKey: <string> process.env.AWS_ACCESS_KEY,
    secretKey: <string> process.env.AWS_SECRET_KEY,
    region: <string> process.env.AWS_REGION
  };
}

export const client = new Client(config);