fix!: drop support for Node 4, 6, 8, 10 (protobufjs#1764)

.github/workflows/test.yml

@@ -34,15 +34,12 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node_version: ["4", "4.3.2", "6", "8", "10", "12"]
+        node_version: ["12", "14", "16", "18"]
     steps:
     - uses: actions/checkout@v1
     - uses: actions/setup-node@v1
       with:
         node-version: ${{ matrix.node_version }}
-    - name: 'Install the latest @types/node that works'
-      if: ${{ matrix.node_version == '4' || matrix.node_version == '4.3.2' || matrix.node_version == '6' }}
-      run: npm install --save --save-exact @types/node@17.0.41
     - name: "Install dependencies"
       run: npm install
     - name: "Test sources"

cli/package.json

@@ -7,6 +7,9 @@
     "type": "git",
     "url": "https://github.com/protobufjs/protobuf.js.git"
   },
+  "engines": {
+    "node": ">=12.0.0"
+  },
   "license": "BSD-3-Clause",
   "main": "index.js",
   "types": "index.d.ts",

package.json

@@ -8,6 +8,9 @@
   "repository": "protobufjs/protobuf.js",
   "bugs": "https://github.com/protobufjs/protobuf.js/issues",
   "homepage": "https://protobufjs.github.io/protobuf.js/",
+  "engines": {
+    "node": ">=12.0.0"
+  },
   "keywords": [
     "protobuf",
     "protocol-buffers",