Remove local use of JSX

Author: wooorm

docs/docs/using-mdx.mdx

@@ -146,7 +146,7 @@ It could be imported in the following ways:
 // @filename: types.d.ts
 declare module '*.mdx' {
   export {MDXContent as default} from 'mdx/types';
-  export function Thing(): JSX.Element;
+  export function Thing(): unknown;
 }
 // @filename: example.js
 /// <reference types="node" />

docs/guides/mdx-on-demand.mdx

@@ -69,7 +69,7 @@ Next.
 ```js twoslash path="pages/hello.js"
 /**
  * @import {MDXModule} from 'mdx/types.js'
- * @import {Dispatch, JSX, SetStateAction} from 'react'
+ * @import {Dispatch, ReactElement, SetStateAction} from 'react'
  */
 
 import {compile, run} from '@mdx-js/mdx'
@@ -78,7 +78,7 @@ import * as runtime from 'react/jsx-runtime'
 
 /**
  * @param {{code: string}} props
- * @returns {JSX.Element}
+ * @returns {ReactElement}
  */
 export default function Page({code}) {
   /** @type {[MDXModule | undefined, Dispatch<SetStateAction<MDXModule | undefined>>]} */

packages/preact/readme.md

@@ -123,7 +123,7 @@ Provider for MDX context.
 
 ##### Returns
 
-Element (`JSX.Element`).
+Element (`VNode`).
 
 ### `useMDXComponents(components?)`
 

packages/react/readme.md

@@ -127,7 +127,7 @@ Provider for MDX context.
 
 ##### Returns
 
-Element (`JSX.Element`).
+Element (`ReactElement`).
 
 ### `useMDXComponents(components?)`