Using create-t3-app.

src/client/tsconfig.json

@@ -1,8 +1,9 @@
 {
   "compilerOptions": {
-    "target": "es5",
+    "target": "es2017",
     "lib": ["dom", "dom.iterable", "esnext"],
     "allowJs": true,
+    "checkJs": true,
     "skipLibCheck": true,
     "strict": true,
     "forceConsistentCasingInFileNames": true,
@@ -14,15 +15,19 @@
     "isolatedModules": true,
     "jsx": "preserve",
     "incremental": true,
-    "plugins": [
-      {
-        "name": "next"
-      }
-    ],
+    "noUncheckedIndexedAccess": true,
+    "baseUrl": ".",
     "paths": {
-      "@/*": ["./src/*"]
+      "~/*": ["./src/*"]
     }
   },
-  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
+  "include": [
+    ".eslintrc.cjs",
+    "next-env.d.ts",
+    "**/*.ts",
+    "**/*.tsx",
+    "**/*.cjs",
+    "**/*.mjs"
+  ],
   "exclude": ["node_modules"]
 }