Change to use exports map

Author: wooorm

package.json

@@ -30,8 +30,7 @@
   ],
   "sideEffects": false,
   "type": "module",
-  "main": "index.js",
-  "types": "index.d.ts",
+  "exports": "./index.js",
   "files": [
     "lib/",
     "index.d.ts",

test/index.js

@@ -1,14 +1,14 @@
 /**
  * @typedef {import('mdast').BlockContent} BlockContent
  * @typedef {import('mdast').List} List
- * @typedef {import('../index.js').Handle} Handle
+ * @typedef {import('mdast-util-to-markdown').Handle} Handle
  */
 
 import assert from 'node:assert/strict'
 import test from 'node:test'
 import {removePosition} from 'unist-util-remove-position'
 import {fromMarkdown as from} from 'mdast-util-from-markdown'
-import {toMarkdown as to} from '../index.js'
+import {toMarkdown as to} from 'mdast-util-to-markdown'
 
 test('core', async function (t) {
   await t.test('should expose the public api', async function () {