fix(build): update build and test tooling configuration, migrate project config to .smartconfig.json, and align TypeScript typings

.vscode/settings.json

@@ -1,7 +1,7 @@
 {
   "json.schemas": [
     {
-      "fileMatch": ["/npmextra.json"],
+      "fileMatch": ["/.smartconfig.json"],
       "schema": {
         "type": "object",
         "properties": {
@@ -22,6 +22,5 @@
         }
       }
     }
-  ],
-  "deno.enable": false
+  ]
 }