Minimum required Node.js version is 18.

Node.js 16 has reached its end of life, and the new jsdom 23.0.1
needs Node.js 18 or later.

.github/workflows/node.js.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [16.x, 18.x, 20.x]
+        node-version: [18.x, 20.x, 21.x]
 
     steps:
     - uses: actions/checkout@v4

.gitlab-ci.yml

@@ -1,15 +1,16 @@
-node_16:
-  image: node:16-alpine
+node_18:
+  image: node:18-alpine
   stage: build
   before_script:
     - node --version
     - npm --version
   script:
     - cd ./export-server
     - npm install
+    - ./test.sh
 
-node_18:
-  image: node:18-alpine
+node_20:
+  image: node:20-alpine
   stage: build
   before_script:
     - node --version
@@ -19,8 +20,8 @@ node_18:
     - npm install
     - ./test.sh
 
-node_20:
-  image: node:20-alpine
+node_21:
+  image: node:21-alpine
   stage: build
   before_script:
     - node --version

changelog.md

@@ -10,7 +10,12 @@ Since [Plotly.js](https://plotly.com/javascript/) is the main dependency of this
 application, major version changes in Plotly.js will also trigger a major
 version change in this application.
 
-## Version 5.0.0-pre (2023-11-30)
+## Version 5.0.0-pre (2023-12-01)
+
+* __[breaking change]__
+__Support for Node.js 17 and older versions is dropped.__ The minimum required
+version is now Node.js 18. Node.js versions before 18 have reached their end of
+life, so users of those versions should upgrade to newer versions anyway.
 
 * __[maintenance]__
 Update dependency `jsdom` to 23.0.1.

documentation/installation-node-js.md

@@ -12,7 +12,7 @@ installer package and install it.
 
 ## Node.js on Linux
 If your Linux distribution does not provide a recent Node.js version (at least
-version 16 is recommended), you can add an (unofficial) Node.js package
+version 18 is recommended), you can add an (unofficial) Node.js package
 repository to your system.
 
 ### Debian-based

export-server/package.json

@@ -26,6 +26,6 @@
     "uuid": "^9.0.1"
   },
   "engines": {
-    "node": ">=16"
+    "node": ">=18"
   }
 }

readme.md

@@ -11,7 +11,7 @@ on the Plotly servers.
 
 This application needs one prerequisite:
 
-* Node.js 16 or later (preferably the latest LTS version)
+* Node.js 18 or later (preferably the latest LTS version)
 
 ### Installation of Node.js