Add asset building to tests

.github/workflows/test.yml

@@ -18,3 +18,11 @@ jobs:
     - uses: actions/checkout@v3
     - run: go test ./storage -v
     - run: go test ./storage -bench=.
+    
+    # build the assets
+    - uses: actions/setup-node@v3
+      with:
+        node-version: 16
+        cache: 'npm'
+    - run: npm install
+    - run: npm run package