Enforce Worker's compiled code to be up-to-date

Signed-off-by: ItalyPaleAle <43508+ItalyPaleAle@users.noreply.github.com>

.github/workflows/conformance.yml

@@ -175,6 +175,10 @@ jobs:
   conformance:
     name: ${{ matrix.component }} conformance
     runs-on: ubuntu-latest
+    env:
+      # Version of Node.js to use
+      # Currently used by the Cloudflare components
+      NODE_VERSION: 18.x
     defaults:
       run:
         shell: bash
@@ -320,6 +324,25 @@ jobs:
       run: docker-compose -f ./.github/infrastructure/docker-compose-rabbitmq.yml -p rabbitmq up -d
       if: contains(matrix.component, 'rabbitmq')
 
+    - name: Install Node.js ${{ env.NODE_VERSION }}
+      if: contains(matrix.component, 'cloudflare')
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ env.NODE_VERSION }}
+
+    - name: Check Cloudflare Workers code
+      if: contains(matrix.component, 'cloudflare')
+      run: |
+        # Build the Worker
+        (
+          cd internal/component/cloudflare/worker-src;
+          npm ci;
+          npm run build;
+        )
+        # Check no changes
+        git diff --exit-code ./internal/component/cloudflare/workers/code \
+          || (echo "The source code of the Cloudflare Worker has changed, but the Worker has not been recompiled. Please re-compile the Worker by running 'npm ci && npm run build' in 'internal/component/cloudflare/worker-src'" && exit 1)
+
     - name: Setup Cloudflare KV
       if: matrix.component == 'state.cloudflare.workerskv'
       env: