Make tsconfig stricter. Setup aliases

Author: psd-coder

tsconfig.json

@@ -1,5 +1,12 @@
 {
-  "extends": "astro/tsconfigs/strict",
+  "extends": "astro/tsconfigs/strictest",
   "include": [".astro/types.d.ts", "**/*"],
-  "exclude": ["dist"]
+  "compilerOptions": {
+    "exactOptionalPropertyTypes": false,
+    "baseUrl": ".",
+    "paths": {
+      "~/*": ["src/*"],
+      "~~/*": ["*"]
+    }
+  }
 }