Fix test-runner invocation

Author: apasel422

ts/package.json

@@ -8,7 +8,7 @@
     "pack": "webpack --mode production",
     "flexible-event": "node dist/flexible-event/main.js",
     "header": "node dist/header-validator/main.js",
-    "test": "node --test dist/",
+    "test": "node --test dist/**/*.test.js",
     "pretty": "prettier . --write",
     "pretty:check": "prettier . --check",
     "lint": "eslint src"