chore: use tsdown instead of tsup (#156)

* chore: add tsdown configuration for building TypeScript project

* chore: update TypeScript to version 6.0.2 and remove baseUrl from tsconfig

Author: sunya9

example/package.json

@@ -26,7 +26,7 @@
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.5.0",
     "globals": "^17.3.0",
-    "typescript": "^5.9.2",
+    "typescript": "^6.0.2",
     "typescript-eslint": "^8.39.1",
     "vite": "^8.0.3",
     "vite-plugin-react-og-image": "link:..",

package.json

@@ -7,6 +7,7 @@
   ],
   "types": "dist/index.d.ts",
   "module": "dist/index.mjs",
+  "type": "module",
   "main": "dist/index.js",
   "exports": {
     ".": {
@@ -19,7 +20,7 @@
     "format": "biome check --write .",
     "lint": "biome check .",
     "prepublishOnly": "pnpm build",
-    "build": "tsup"
+    "build": "tsdown"
   },
   "keywords": [
     "vite",
@@ -47,8 +48,8 @@
     "@biomejs/biome": "2.4.10",
     "@types/node": "^25.0.2",
     "@types/react": "^19.1.8",
-    "tsup": "^8.5.0",
-    "typescript": "^5.9.2",
+    "tsdown": "^0.21.7",
+    "typescript": "^6.0.2",
     "vite": "^8.0.3"
   },
   "peerDependencies": {