Added unit tests

package.json

@@ -7,7 +7,9 @@
     "test": "test"
   },
   "scripts": {
-    "test": "mocha -r ts-node/register '**/*.test.ts'",
+    "compile": "tsc -b",
+    "test": "mocha --debug-brk",
+    "pretest": "npm run compile",
     "update": "npm update && npm audit fix"
   },
   "repository": {
@@ -32,5 +34,8 @@
     "mocha": "^9.0.3",
     "ts-loader": "^9.2.5",
     "ts-node": "^10.2.0"
+  },
+  "dependencies": {
+    "vscode-json-languageservice": "^4.1.7"
   }
 }