Refactor GitHub Actions to use single node version

Removed individual action.yml files for Node 14, 16 and 18 and replaced them with a single .node-version file. Consolidated and refactored the GitHub Actions workflow in main.yml to incorporate these changes. Workflow is now set to perform lint and test jobs for Node versions defined in the .node-version file matrix.

.github/workflows/main.yml

@@ -1,53 +1,60 @@
 name: Checks
-on: [ push ]
+on:
+  push:
+    branches:
+      - master
+      - release
+  pull_request:
 
 jobs:
-  Lint:
-    runs-on: ubuntu-latest
+  lint:
+    runs-on: [ self-hosted, small ]
     steps:
       - uses: actions/checkout@v4
-      - uses: ./.github/actions/node18
-      - name: node version
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version-file: .node-version
+          cache: 'npm'
+          cache-dependency-path: package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Display Node.js version
         run: node --version
+
       - name: Lint
         run: npm run lint
 
-  Node_14:
-    runs-on: ubuntu-latest
-    env:
-      NODE_ENV: test_lib
-    steps:
-      - uses: actions/checkout@v4
-      - uses: ./.github/actions/node14
-      - uses: browser-actions/setup-chrome@latest
-      - run: chrome --version
-      - name: node version
-        run: node --version
-      - name: Test
-        run: npm run test
-  Node_16:
-    runs-on: ubuntu-latest
-    env:
-      NODE_ENV: test_lib
-    steps:
-      - uses: actions/checkout@v4
-      - uses: ./.github/actions/node16
-      - uses: browser-actions/setup-chrome@latest
-      - run: chrome --version
-      - name: node version
-        run: node --version
-      - name: test
-        run: npm run test
-  Node_18:
-    runs-on: ubuntu-latest
+  tests:
+    runs-on: [ self-hosted, small ]
     env:
       NODE_ENV: test_lib
+    strategy:
+      matrix:
+        node-version: [ 16.x, 18.x, 20.x, 21.x ]
     steps:
       - uses: actions/checkout@v4
-      - uses: ./.github/actions/node18
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'npm'
+          cache-dependency-path: package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
       - uses: browser-actions/setup-chrome@latest
-      - run: chrome --version
-      - name: node version
+
+      - name: Display Chrome version
+        run: chrome --version
+
+      - name: Display Node.js version
         run: node --version
-      - name: test
+
+      - name: Run tests
         run: npm run test

.node-version

@@ -0,0 +1 @@
+18