fix: 修复 typescript 中使用找不到声明文件

close #144

package.json

@@ -9,6 +9,7 @@
   "types": "dist/index.d.ts",
   "exports": {
     ".": {
+      "types": "./dist/index.d.ts",
       "import": "./dist/index.mjs",
       "require": "./dist/index.js"
     }