docs: fix typescript errors

docs/src/.vitepress/config.mts

@@ -1,4 +1,3 @@
-// @ts-ignore
 import { generateSidebar } from 'vitepress-sidebar'
 import { name, description, repository } from '../../../package.json'
 

docs/tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "target": "esnext",
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "allowSyntheticDefaultImports": true
+  },
+  "include": ["src/.vitepress/config.mts", "package.json"]
+}