rename karma.conf.js

Author: jchartrand

karma.conf.js

@@ -14,7 +14,7 @@
     "rebuild": "npm run clear && npm run build",
     "test": "npm run lint && npm run test-node",
     "test-node": "npm run build-test && mocha dist/test/*.spec.js",
-    "test-karma": "karma start karma.conf.js"
+    "test-karma": "karma start karma.conf.cjs"
   },
   "files": [
     "dist",