Have the CI build enforce the use of terser.

Author: sanason

.github/workflows/ci.yml

@@ -17,3 +17,8 @@ jobs:
         run: npm ci --timing
       - name: Lint javascript
         run: npm run lint
+      - name: Validate minification uses script
+        run: |
+          npm run minify
+          git diff --exit-code Universal-Federated-Analytics-Min.js
+