Added $ref validator

package.json

@@ -8,15 +8,15 @@
     "test": "test"
   },
   "scripts": {
-    "compile": "tsc -b",
     "build": "npm run clean && npm run compile",
-    "format": "prettier --write \"src/**/*.ts\" \"src/**/*.js\"",
-    "test": "mocha --debug-brk",
     "clean": "rimraf lib",
-    "pretest": "npm run compile",
-    "prepublishOnly": "npm test",
-    "preversion": "",
+    "compile": "tsc -b",
+    "format": "prettier --write \"src/**/*.ts\" \"src/**/*.js\"",
     "postversion": "git push && git push --tags",
+    "prepublishOnly": "npm test",
+    "pretest": "npm run compile",
+    "preversion": "",
+    "test": "mocha --debug-brk",
     "version": "git add -A src",
     "watch": "tsc -w -p ./src"
   },
@@ -39,9 +39,11 @@
     "@types/mocha": "^9.1.1",
     "@types/node": "^17.0.31",
     "chai": "^4.3.6",
+    "comment-json": "^4.1.1",
     "json-loader": "^0.5.7",
     "mocha": "^9.2.2",
     "ts-loader": "^9.3.0",
+    "ts-mocha": "^10.0.0",
     "ts-node": "^10.7.0",
     "typescript": "^4.6.4"
   },