# HP9002: No React found on the page

> HP9002 (no-react) means the page loaded without any React renderer, so nothing was hydrated or tested. Check the URL and that the page's scripts load.

Source: https://hydration.jscrate.dev/docs/issues/hp9002
Last updated: 2026-09-18

HP9002 (`no-react`) means the page loaded without any React renderer, so
nothing was hydrated and nothing on the page was tested. Either the URL does
not serve a React page, or its scripts did not load in the test browser. Check
the URL and the network requests of the page.

| | |
| --- | --- |
| Code | `HP9002` |
| Name | `no-react` |
| Default severity | Warning |
| Group | Test run problems |
| What it means | The page loaded without any React renderer, so nothing was hydrated. |

## What the HP9002 no React finding means

hydration-proof connects to React through the hook React looks for when it
loads. If no renderer has registered two seconds after the page finished
loading, it reports:

```text
No React renderer was found on the page.
```

It is a warning: the page is not broken, but it was not tested either.

On Astro, pages without React islands are normal, and the Astro adapter does
not report them.

## Likely causes

- The route serves a page that is not rendered with React: a static file, a
  page from another app behind the same host, an error page from a proxy.
- The page's scripts fail to load: a 404 on a JavaScript chunk after a deploy,
  a Content Security Policy that blocks them, a CDN origin the test machine
  cannot reach.
- A redirect to a sign-in page of another service (see
  [HP9010](https://hydration.jscrate.dev/docs/issues/hp9010)).

## How to fix it

Check that the URL serves a React page and that its scripts load in the test
browser.

1. Open the route with `--headed` and check the network tab for failed
   scripts.
2. With `--url`, make sure the URL points at the app you mean to test.
3. If the route is not a React page, leave it out with `routes.exclude`:

```ts title="hydration-proof.config.ts"
import { defineConfig } from "hydration-proof";

export default defineConfig({
  routes: {
    exclude: ["/api/**", "/legal/*.html"],
  },
});
```

[Routes](https://hydration.jscrate.dev/docs/routes) explains where routes come from and how to filter them.

## Related

- [HP9003: the page is rendered on the client only](https://hydration.jscrate.dev/docs/issues/hp9003)
- [HP9008: React loaded but never mounted a root](https://hydration.jscrate.dev/docs/issues/hp9008)
- [HP9004: the page could not be loaded](https://hydration.jscrate.dev/docs/issues/hp9004)
- [Troubleshooting](https://hydration.jscrate.dev/docs/troubleshooting)
- [How hydration-proof connects to React](https://hydration.jscrate.dev/docs/how-it-works)