diff --git a/examples/z-experimental-refresh/.gitignore b/examples/z-experimental-refresh/.gitignore
deleted file mode 100644
index 1437c53f70bc2..0000000000000
--- a/examples/z-experimental-refresh/.gitignore
+++ /dev/null
@@ -1,34 +0,0 @@
-# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
-
-# dependencies
-/node_modules
-/.pnp
-.pnp.js
-
-# testing
-/coverage
-
-# next.js
-/.next/
-/out/
-
-# production
-/build
-
-# misc
-.DS_Store
-*.pem
-
-# debug
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-
-# local env files
-.env.local
-.env.development.local
-.env.test.local
-.env.production.local
-
-# vercel
-.vercel
diff --git a/examples/z-experimental-refresh/README.md b/examples/z-experimental-refresh/README.md
deleted file mode 100644
index 078c5d65e90b5..0000000000000
--- a/examples/z-experimental-refresh/README.md
+++ /dev/null
@@ -1,14 +0,0 @@
-# z-experimental-refresh
-
-This is an **experimental** demo of React Fast Refresh.
-Please do not use these features in your application or project (yet).
-
-## Usage
-
-Run the following command to get started:
-
-```bash
-yarn dev
-# or
-npm run dev
-```
diff --git a/examples/z-experimental-refresh/components/ClickCount.js b/examples/z-experimental-refresh/components/ClickCount.js
deleted file mode 100644
index 283266612179e..0000000000000
--- a/examples/z-experimental-refresh/components/ClickCount.js
+++ /dev/null
@@ -1,15 +0,0 @@
-import { useCallback, useState } from 'react'
-import styles from './ClickCount.module.css'
-
-export default function ClickCount() {
-  const [count, setCount] = useState(0)
-  const increment = useCallback(() => {
-    setCount((v) => v + 1)
-  }, [setCount])
-
-  return (
-    <button className={styles.btn} type="button" onClick={increment}>
-      Clicks: {count}
-    </button>
-  )
-}
diff --git a/examples/z-experimental-refresh/components/ClickCount.module.css b/examples/z-experimental-refresh/components/ClickCount.module.css
deleted file mode 100644
index 3cba6f351a456..0000000000000
--- a/examples/z-experimental-refresh/components/ClickCount.module.css
+++ /dev/null
@@ -1,32 +0,0 @@
-button.btn {
-  margin: 0;
-  border: 1px solid #d1d1d1;
-  border-radius: 5px;
-  padding: 0.5em;
-  vertical-align: middle;
-  white-space: normal;
-  background: none;
-  line-height: 1;
-  font-size: 1rem;
-  font-family: inherit;
-  transition: all 0.2s ease;
-}
-
-button.btn {
-  padding: 0.65em 1em;
-  background: #0076ff;
-  color: #fff;
-  border: none;
-  cursor: pointer;
-  transition: all 0.2s ease;
-}
-button.btn:focus {
-  outline: 0;
-  border-color: #0076ff;
-}
-button.btn:hover {
-  background: rgba(0, 118, 255, 0.8);
-}
-button.btn:focus {
-  box-shadow: 0 0 0 2px rgba(0, 118, 255, 0.5);
-}
diff --git a/examples/z-experimental-refresh/global.css b/examples/z-experimental-refresh/global.css
deleted file mode 100644
index e28fd3dfe7a37..0000000000000
--- a/examples/z-experimental-refresh/global.css
+++ /dev/null
@@ -1,41 +0,0 @@
-body {
-  font-family: 'SF Pro Text', 'SF Pro Icons', 'Helvetica Neue', 'Helvetica',
-    'Arial', sans-serif;
-  padding: 20px 20px 60px;
-  max-width: 680px;
-  margin: 0 auto;
-  font-size: 16px;
-  line-height: 1.65;
-  word-break: break-word;
-  font-kerning: auto;
-  font-variant: normal;
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-  text-rendering: optimizeLegibility;
-  hyphens: auto;
-}
-
-h2,
-h3,
-h4 {
-  margin-top: 1.5em;
-}
-
-code,
-pre {
-  font-family: Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono,
-    Bitstream Vera Sans Mono, Courier New, monospace, serif;
-  font-size: 0.92em;
-  color: #d400ff;
-}
-
-code:before,
-code:after {
-  content: '`';
-}
-
-hr {
-  border: none;
-  border-bottom: 1px solid #efefef;
-  margin: 5em auto;
-}
diff --git a/examples/z-experimental-refresh/package.json b/examples/z-experimental-refresh/package.json
deleted file mode 100644
index 97e0becd5a630..0000000000000
--- a/examples/z-experimental-refresh/package.json
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-  "name": "z-experimental-refresh",
-  "version": "1.0.0",
-  "scripts": {
-    "dev": "next",
-    "build": "next build",
-    "start": "next start"
-  },
-  "dependencies": {
-    "next": "canary",
-    "react": "^16.9.0",
-    "react-dom": "^16.9.0"
-  },
-  "license": "MIT"
-}
diff --git a/examples/z-experimental-refresh/pages/_app.js b/examples/z-experimental-refresh/pages/_app.js
deleted file mode 100644
index d305f97bab7f1..0000000000000
--- a/examples/z-experimental-refresh/pages/_app.js
+++ /dev/null
@@ -1,5 +0,0 @@
-import '../global.css'
-
-export default function MyApp({ Component, pageProps }) {
-  return <Component {...pageProps} />
-}
diff --git a/examples/z-experimental-refresh/pages/index.js b/examples/z-experimental-refresh/pages/index.js
deleted file mode 100644
index 6346c5e117737..0000000000000
--- a/examples/z-experimental-refresh/pages/index.js
+++ /dev/null
@@ -1,60 +0,0 @@
-import { useCallback, useEffect, useState } from 'react'
-import ClickCount from '../components/ClickCount'
-import styles from '../components/ClickCount.module.css'
-
-function a() {
-  console.log(
-    // hello
-    document.body()
-  )
-}
-
-function foo() {
-  a()
-}
-
-function Home() {
-  const [count, setCount] = useState(0)
-  const increment = useCallback(() => {
-    setCount((v) => v + 1)
-  }, [setCount])
-
-  useEffect(() => {
-    const r = setInterval(() => {
-      increment()
-    }, 250)
-    return () => {
-      clearInterval(r)
-    }
-  }, [increment])
-
-  return (
-    <main>
-      <h1>Home</h1>
-      <div>
-        <p>Auto Incrementing Value</p>
-        <p>Current value: {count}</p>
-      </div>
-      <hr />
-      <div>
-        <p>Component with State</p>
-        <ClickCount />
-      </div>
-      <hr />
-      <div>
-        <button
-          className={styles.btn}
-          type="button"
-          onClick={(e) => {
-            setTimeout(() => document.parentNode(), 0)
-            foo()
-          }}
-        >
-          Throw an Error
-        </button>
-      </div>
-    </main>
-  )
-}
-
-export default Home