Use package-json instead of package-lock.json

for cache

.github/workflows/tests.yml

@@ -97,7 +97,7 @@ jobs:
       with:
         node-version: '12'
         cache: 'npm'
-        cache-dependency-path: 'js/package-lock.json'
+        cache-dependency-path: 'js/package.json'
         
     - name: Setup Mocha
       run: npm install -g mocha