Drop support for Node 18 (#2827)

.buildkite/Dockerfile

@@ -1,4 +1,4 @@
-ARG NODE_VERSION=${NODE_VERSION:-18}
+ARG NODE_VERSION=${NODE_VERSION:-20}
 FROM node:$NODE_VERSION
 
 # Install required tools

.buildkite/Dockerfile-make

@@ -1,4 +1,4 @@
-ARG NODE_JS_VERSION=${NODE_JS_VERSION:-18}
+ARG NODE_JS_VERSION=${NODE_JS_VERSION:-20}
 FROM node:${NODE_JS_VERSION}
 
 ARG BUILDER_UID=1000

.buildkite/pipeline.yml

@@ -16,9 +16,9 @@ steps:
     matrix:
       setup:
         nodejs:
-          - "18"
           - "20"
           - "22"
+          - "23"
     command: ./.buildkite/run-tests.sh
     artifact_paths: "./junit-output/junit-*.xml"
   - wait: ~

.buildkite/run-client.sh

@@ -6,7 +6,7 @@ script_path=$(dirname "$(realpath -s "$0")")
 set -euo pipefail
 repo=$(pwd)
 
-export NODE_VERSION=${NODE_VERSION:-18}
+export NODE_VERSION=${NODE_VERSION:-20}
 
 echo "--- :javascript: Building Docker image"
 docker build \

.github/ISSUE_TEMPLATE/bug.yaml

@@ -40,7 +40,7 @@ body:
     id: node-js-version
     attributes:
       label: Node.js version
-      placeholder: 18.x, 20.x, etc.
+      placeholder: 20.x, 22.x, etc.
     validations:
       required: true
 

.github/workflows/nodejs.yml

@@ -32,7 +32,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [18.x, 20.x, 22.x, 23.x]
+        node-version: [20.x, 22.x, 23.x]
         os: [ubuntu-latest, windows-latest, macOS-latest]
 
     steps:

README.md

@@ -43,17 +43,17 @@ compatible with default distributions and without guarantees made.
 
 ## Usage
 
-* [Creating an index](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_creating_an_index)
-* [Indexing a document](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_indexing_documents)
-* [Getting documents](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_getting_documents)
-* [Searching documents](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_searching_documents)
-* [Updating documents](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_updating_documents)
-* [Deleting documents](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_deleting_documents)
-* [Deleting an index](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_deleting_an_index)
+- [Creating an index](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_creating_an_index)
+- [Indexing a document](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_indexing_documents)
+- [Getting documents](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_getting_documents)
+- [Searching documents](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_searching_documents)
+- [Updating documents](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_updating_documents)
+- [Deleting documents](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_deleting_documents)
+- [Deleting an index](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/getting-started-js.html#_deleting_an_index)
 
 ### Node.js support
 
-NOTE: The minimum supported version of Node.js is `v18`.
+NOTE: The minimum supported version of Node.js is `v20`.
 
 The client versioning follows the Elastic Stack versioning, this means that
 major, minor, and patch releases are done following a precise schedule that
@@ -79,27 +79,27 @@ of `^7.10.0`).
 | `12.x`          | `April 2022`     | `8.2` (early 2022)  |
 | `14.x`          | `April 2023`     | `8.8` (early 2023)  |
 | `16.x`          | `September 2023` | `8.11` (late 2023)  |
-| `18.x`          | `April 2025`     | `9.2` (late 2025)   |
+| `18.x`          | `April 2025`     | `9.1` (mid 2025)    |
 
 #### 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](./docs/examples/proxy).
+> We recommend that you write a lightweight proxy that uses this client instead, you can see a proxy example [here](./docs/examples/proxy).
 
 ## Documentation
 
-* [Introduction](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/introduction.html)
-* [Usage](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/client-connecting.html#client-usage)
-* [Client configuration](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/client-configuration.html)
-* [API reference](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/api-reference.html)
-* [Authentication](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/client-connecting.html#authentication)
-* [Observability](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/observability.html)
-* [Creating a child client](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/child.html)
-* [Client helpers](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/client-helpers.html)
-* [Typescript support](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/typescript.html)
-* [Testing](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/client-testing.html)
-* [Examples](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/examples.html)
+- [Introduction](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/introduction.html)
+- [Usage](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/client-connecting.html#client-usage)
+- [Client configuration](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/client-configuration.html)
+- [API reference](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/api-reference.html)
+- [Authentication](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/client-connecting.html#authentication)
+- [Observability](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/observability.html)
+- [Creating a child client](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/child.html)
+- [Client helpers](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/client-helpers.html)
+- [Typescript support](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/typescript.html)
+- [Testing](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/client-testing.html)
+- [Examples](https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/examples.html)
 
 ## Install multiple versions
 
@@ -147,7 +147,7 @@ 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
+_(the one that lives in Elasticsearch’s main branch)_, you can use the following
 command:
 
 ```sh