Merge pull request #41 from node-oauth/update-node-version

update minimal supported node version to 12

Author: HappyZombies

README.md

@@ -40,6 +40,15 @@ This module has been rewritten using a promise-based approach, introducing chang
 
 Please refer to our [3.0 migration guide](https://oauth2-server.readthedocs.io/en/latest/misc/migrating-v2-to-v3.html) for more information.
 
+## Supported NodeJs versions
+
+This project supports the node versions along the
+[NodeJS LTS releases](https://nodejs.org/en/about/releases/), focusing on
+
+- Maintenance LTS
+- Active LTS
+- Current
+
 ## Contributing to this project
 
 Please read our [contribution guide](./CONTRIBUTING.md) before taking actions.

package.json

@@ -33,7 +33,7 @@
   },
   "license": "MIT",
   "engines": {
-    "node": ">=4.0"
+    "node": ">=12.0.0"
   },
   "scripts": {
     "pretest": "./node_modules/.bin/eslint lib test index.js",