Revert "Remove Node.js 16 support"

This reverts commit 4a80664.

Author: ai

.github/workflows/test.yml

@@ -32,6 +32,7 @@ jobs:
       matrix:
         node-version:
           - 18
+          - 16
     name: Node.js ${{ matrix.node-version }} Quick
     steps:
       - name: Checkout the repository

package.json

@@ -21,7 +21,7 @@
   "license": "MIT",
   "repository": "ai/nanoevents",
   "engines": {
-    "node": "^18.0.0 || >=20.0.0"
+    "node": "^16.0.0 || ^18.0.0 || >=20.0.0"
   },
   "sideEffects": false,
   "type": "module",