Add check-dist workflow

Author: paulbalandan

.github/workflows/check-dist.yml

@@ -0,0 +1,49 @@
+name: Check dist
+
+on:
+  push:
+    branches:
+      - '1.x'
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+  workflow_dispatch:
+
+jobs:
+  check-dist:
+    runs-on: ubuntu-22.04
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Set Node.js 16
+        uses: actions/setup-node@v3
+        with:
+          node-version: '16.x'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Rebuild the dist/ directory
+        run: |
+          npm run build
+          npm run package
+
+      - name: Compare the expected and actual dist/ directories
+        run: |
+          if [ "$(git diff --ignore-space-at-eol dist/ | wc -l)" -gt "0" ]; then
+            echo "Detected uncommitted changes after build. See status below:"
+            git diff
+            exit 1
+          fi
+        id: diff
+
+      - name: Upload expected version if different
+        uses: actions/upload-artifact@v2
+        if: ${{ failure() && steps.diff.conclusion == 'failure' }}
+        with:
+          name: dist
+          path: dist/