refactor(typingsInstaller): modernize architecture and improve type safety.

package.json

@@ -48,8 +48,9 @@
         "@types/minimist": "^1.2.5",
         "@types/mocha": "^10.0.10",
         "@types/ms": "^0.7.34",
-        "@types/node": "latest",
+        "@types/node": "^24.3.1",
         "@types/source-map-support": "^0.5.10",
+        "@types/validate-npm-package-name": "^4.0.2",
         "@types/which": "^3.0.4",
         "@typescript-eslint/rule-tester": "^8.39.1",
         "@typescript-eslint/type-utils": "^8.39.1",
@@ -114,5 +115,8 @@
     "volta": {
         "node": "20.1.0",
         "npm": "8.19.4"
+    },
+    "dependencies": {
+        "validate-npm-package-name": "^6.0.2"
     }
 }