ci: add job for checking committed bundle

Author: O7EG

.github/workflows/ci.yaml

@@ -3,6 +3,8 @@ on:
   push:
     branches:
       - main
+    tags:
+      - v*
   pull_request:
     branches:
       - main
@@ -50,3 +52,39 @@ jobs:
         run: pnpm install
       - name: Run unit-tests
         run: pnpm run test
+
+  bundle:
+    runs-on: ubuntu-latest
+    needs:
+      - typos
+      - tests
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+      - name: Set up pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: ${{ env.PNPM_VERSION }}
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+          cache: pnpm
+      - name: Install dependencies
+        run: pnpm install
+      - name: Clean up bundle
+        run: pnpm run clean
+      - name: Build and bundle code
+        run: pnpm run build
+      - name: Check committed bundle
+        run: |
+          diffs="$(git diff --ignore-space-at-eol --text ./dist/)"
+          if [ -f "./dist/index.js" -a -z "$diffs" ]; then
+              echo "Committed bundle is up-to-date!"
+              exit 0
+          fi
+
+          echo "Committed bundle is not up-to-date!"
+          echo ""
+          echo "$diffs"
+          exit 1