chore: drop Node.js 16 support\n\n- Remove Node.js 16 from test matrix\n- Add Node.js >=18 requirement to package.json\n- Document Node.js version requirement in README

Author: kevinmichaelchen

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [16.x, 18.x, 20.x]
+        node-version: [18.x, 20.x]
       fail-fast: false
 
     steps:

README.md

@@ -20,6 +20,9 @@ business rule evaluation.
 npm install cel-typescript
 ```
 
+**Requirements:**
+- Node.js 18 or later
+
 This package includes pre-compiled native binaries for multiple platforms:
 
 - macOS (x64, arm64)

package.json

@@ -2,6 +2,9 @@
   "name": "cel-typescript",
   "version": "0.1.0",
   "type": "module",
+  "engines": {
+    "node": ">=18.0.0"
+  },
   "exports": {
     ".": {
       "import": "./dist/src/index.js",