fix npm script

Author: hsubox76

packages/util/package.json

@@ -34,7 +34,7 @@
     "test:browser": "karma start --single-run",
     "test:node": "TS_NODE_CACHE=NO TS_NODE_COMPILER_OPTIONS='{\"module\":\"commonjs\"}' nyc --reporter lcovonly -- mocha test/**/*.test.* --config ../../config/mocharc.node.js",
     "api-report": "api-extractor run --local --verbose",
-    "typings:public": "ts-node generate-public-dts.ts && node ../../scripts/build/use_typings.js ./dist/util-public.d.ts"
+    "typings:public": "node ../../scripts/build/use_typings.js ./dist/util-public.d.ts"
   },
   "license": "Apache-2.0",
   "dependencies": {