fix: add exports for esm

Author: YunYouJun

package.json

@@ -13,6 +13,13 @@
     "markdown-it",
     "markdown"
   ],
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js",
+      "require": "./dist/index.cjs"
+    }
+  },
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
   "files": [
@@ -33,7 +40,7 @@
     "@types/markdown-it": "^14.1.2",
     "@types/markdown-it-container": "^2.0.10",
     "bumpp": "^9.5.2",
-    "eslint": "^9.9.0",
+    "eslint": "^9.9.1",
     "markdown-it": "^14.1.0",
     "markdown-it-container": "^4.0.0",
     "sass": "^1.77.8",