VS Code settings.

.vscode/settings.json

@@ -2,6 +2,14 @@
     "files.associations": {
         "optional": "cpp",
         "system_error": "cpp",
-        "chrono": "cpp"
+        "chrono": "cpp",
+        "typeindex": "cpp",
+        "typeinfo": "cpp",
+        "*.tcc": "cpp",
+        "deque": "cpp",
+        "list": "cpp",
+        "string": "cpp",
+        "unordered_map": "cpp",
+        "vector": "cpp"
     }
 }