Add exports of defaultHandlers, all, one

Closes GH-23.

Reviewed-by: Christian Murphy <christian.murphy.42@gmail.com>
Reviewed-by: Titus Wormer <tituswormer@gmail.com>

index.js

@@ -5,4 +5,6 @@
 
 import remarkRehype from './lib/index.js'
 
+export {defaultHandlers, all, one} from 'mdast-util-to-hast'
+
 export default remarkRehype

package.json

@@ -38,7 +38,7 @@
   "dependencies": {
     "@types/hast": "^2.0.0",
     "@types/mdast": "^3.0.0",
-    "mdast-util-to-hast": "^12.0.0",
+    "mdast-util-to-hast": "^12.1.0",
     "unified": "^10.0.0"
   },
   "devDependencies": {

readme.md

@@ -18,6 +18,9 @@
 *   [Use](#use)
 *   [API](#api)
     *   [`unified().use(remarkRehype[, destination][, options])`](#unifieduseremarkrehype-destination-options)
+    *   [`defaultHandlers`](#defaulthandlers)
+    *   [`one`](#one)
+    *   [`all`](#all)
 *   [Examples](#examples)
     *   [Example: supporting HTML in markdown naïvely](#example-supporting-html-in-markdown-naïvely)
     *   [Example: supporting HTML in markdown properly](#example-supporting-html-in-markdown-properly)
@@ -272,6 +275,21 @@ to the documentation available in [`mdast-util-to-hast`][mdast-util-to-hast].
 This option is a bit advanced as it requires knowledge of ASTs, so we defer
 to the documentation available in [`mdast-util-to-hast`][mdast-util-to-hast].
 
+### `defaultHandlers`
+
+Re-exported [`defaultHandlers`](https://github.com/syntax-tree/mdast-util-to-hast#defaulthandlers)
+from `mdast-util-to-hast`.
+
+### `one`
+
+Re-exported [`one`](https://github.com/syntax-tree/mdast-util-to-hast#one) from
+`mdast-util-to-hast`.
+
+### `all`
+
+Re-exported [`all`](https://github.com/syntax-tree/mdast-util-to-hast#all) from
+`mdast-util-to-hast`.
+
 ## Examples
 
 ### Example: supporting HTML in markdown naïvely

test.js

@@ -3,7 +3,15 @@ import {unified} from 'unified'
 import remarkParse from 'remark-parse'
 import remarkMarkdown from 'remark-stringify'
 import rehypeStringify from 'rehype-stringify'
-import remarkRehype from './index.js'
+import remarkRehype, {defaultHandlers, all, one} from './index.js'
+
+test('exports', (t) => {
+  t.assert(defaultHandlers, 'should export `defaultHandlers`')
+  t.assert(one, 'should export `one`')
+  t.assert(all, 'should export `all`')
+
+  t.end()
+})
 
 test('remarkRehype', (t) => {
   t.equal(