Refactor

tsconfig.json

@@ -1,20 +1,9 @@
 {
+  "extends": "astro/tsconfigs/strict",
+  "include": [".astro/types.d.ts", "**/*"],
+  "exclude": ["dist"],
   "compilerOptions": {
-    // Enable top-level await, and other modern ESM features.
-    "lib": [
-      "dom"
-    ],
-    "target": "ESNext",
-    "module": "ESNext",
-    // Enable node-style module resolution, for things like npm package imports.
-    "moduleResolution": "node",
-    // Enable JSON imports.
-    "resolveJsonModule": true,
-    // Enable stricter transpilation for better output.
-    "isolatedModules": true,
-    // Add type definitions for our Astro runtime.
-    "types": [
-      "astro/client"
-    ]
+    "strictNullChecks": true,
+    "jsx": "preserve"
   }
 }