chore: update exports

Author: antfu

build.config.ts

@@ -5,6 +5,6 @@ export default defineBuildConfig({
     'src/index',
     'src/cli',
   ],
-  declaration: true,
+  declaration: 'node16',
   clean: true,
 })

package.json

@@ -21,14 +21,12 @@
   ],
   "sideEffects": false,
   "exports": {
-    ".": {
-      "types": "./dist/index.d.ts",
-      "import": "./dist/index.mjs"
-    }
+    ".": "./dist/index.mjs",
+    "./package.json": "./package.json"
   },
   "main": "./dist/index.mjs",
   "module": "./dist/index.mjs",
-  "types": "./dist/index.d.ts",
+  "types": "./dist/index.d.mts",
   "bin": {
     "sponsorkit": "./bin/sponsorkit.mjs"
   },