fix: set minimum required node version

Author: usernmae0101

.github/workflows/benchmarks.yml

@@ -12,7 +12,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: '14.x'
+          node-version: '16.x'
 
       - name: Install npm deps
         run: npm install

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x, 14.x, 16.x]
+        node-version: [16.x]
 
     steps:
       - uses: actions/checkout@v2

package.json

@@ -4,6 +4,9 @@
   "description": "Serializes data to transfer fewer bytes over the network",
   "main": "index.js",
   "types": "index.d.ts",
+  "engines": {
+    "node": ">=16.0.0" 
+  },
   "scripts": {
     "test": "jest --coverage",
     "bench": "node benchmarks/run.js"