add build lib ci

.github/workflows/firebase-hosting-merge.yml

@@ -10,7 +10,7 @@ jobs:
   build_and_deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Use Node.js 20
         uses: actions/setup-node@v3
         with:

.github/workflows/firebase-hosting-pull-request.yml

@@ -8,7 +8,7 @@ jobs:
     if: '${{ github.event.pull_request.head.repo.full_name == github.repository }}'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Use Node.js 20
         uses: actions/setup-node@v3
         with:

.github/workflows/nodejs.yml

@@ -0,0 +1,25 @@
+name: Build ngx-markdoc library
+
+on:
+  push:
+    branches: ['main']
+  pull_request:
+    branches: ['main']
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [18.x, 20.x]
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'npm'
+      - run: npm ci
+      - run: npm run build:lib