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@elastic/elasticsearch-canary

The official Elasticsearch client for Node.js


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Elasticsearch Node.js client

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Download the latest version of Elasticsearch or sign-up for a free trial of Elastic Cloud.

The official Node.js client for Elasticsearch.

Installation

Refer to the Installation section of the getting started documentation.

Connecting

Refer to the Connecting section of the getting started documentation.

Usage

Node.js support

NOTE: The minimum supported version of Node.js is v18.

The client versioning follows the Elastic Stack versioning, this means that major, minor, and patch releases are done following a precise schedule that often does not coincide with the Node.js release times.

To avoid support insecure and unsupported versions of Node.js, the client will drop the support of EOL versions of Node.js between minor releases. Typically, as soon as a Node.js version goes into EOL, the client will continue to support that version for at least another minor release. If you are using the client with a version of Node.js that will be unsupported soon, you will see a warning in your logs (the client will start logging the warning with two minors in advance).

Unless you are always using a supported version of Node.js, we recommend defining the client dependency in your package.json with the ~ instead of ^. In this way, you will lock the dependency on the minor release and not the major. (for example, ~7.10.0 instead of ^7.10.0).

Node.js VersionNode.js EOL dateEnd of support
8.xDecember 20197.11 (early 2021)
10.xApril 20217.12 (mid 2021)
12.xApril 20228.2 (early 2022)
14.xApril 20238.8 (early 2023)
16.xSeptember 20238.11 (late 2023)

Compatibility

Language clients are forward compatible; meaning that clients support communicating with greater or equal minor versions of Elasticsearch. Elasticsearch language clients are only backwards compatible with default distributions and without guarantees made.

Elasticsearch VersionClient Version
8.x8.x
7.x7.x
6.x6.x
5.x5.x

To install a specific major of the client, run the following command:

npm install @elastic/elasticsearch@<major>
Browser

[!WARNING] There is no official support for the browser environment. It exposes your Elasticsearch instance to everyone, which could lead to security issues. We recommend that you write a lightweight proxy that uses this client instead, you can see a proxy example here.

Documentation

Install multiple versions

If you are using multiple versions of Elasticsearch, you need to use multiple versions of the client. In the past, install multiple versions of the same package was not possible, but with npm v6.9, you can do that via aliasing.

The command you must run to install different version of the client is:

npm install <alias>@npm:@elastic/elasticsearch@<version>

So for example if you need to install 7.x and 6.x, you will run:

npm install es6@npm:@elastic/elasticsearch@6
npm install es7@npm:@elastic/elasticsearch@7

And your package.json will look like the following:

"dependencies": {
  "es6": "npm:@elastic/elasticsearch@^6.7.0",
  "es7": "npm:@elastic/elasticsearch@^7.0.0"
}

You will require the packages from your code by using the alias you have defined.

const { Client: Client6 } = require('es6')
const { Client: Client7 } = require('es7')

const client6 = new Client6({
  cloud: { id: '<cloud-id>' },
  auth: { apiKey: 'base64EncodedKey' }
})
const client7 = new Client7({
  cloud: { id: '<cloud-id>' },
  auth: { apiKey: 'base64EncodedKey' }
})

client6.info().then(console.log, console.log)
client7.info().then(console.log, console.log)

Finally, if you want to install the client for the next version of Elasticsearch (the one that lives in Elasticsearch’s main branch), you can use the following command:

npm install esmain@github:elastic/elasticsearch-js

License

This software is licensed under the Apache License 2.0.

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Last updated on 28 Feb 2024

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