---
title: Docusaurus 3.3
authors: [slorber]
tags: [release]
image: ./img/social-card.png
date: 2024-05-03
---

We are happy to announce **Docusaurus 3.3**.

Upgrading should be easy. Our [release process](/community/release-process) respects [Semantic Versioning](https://semver.org/). Minor versions do not include any breaking changes.

![Docusaurus blog post social card](./img/social-card.png)

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import BrowserWindow from '@site/src/components/BrowserWindow';
import IframeWindow from '@site/src/components/BrowserWindow/IframeWindow';

## Highlights

### Prepare for React 19

The React core team recently [released the first **React 19 beta**](https://react.dev/blog/2024/04/25/react-19). They also [published an upgrade guide and a **React v18.3 release**](https://react.dev/blog/2024/04/25/react-19-upgrade-guide) with new warnings to help us identify issues **before upgrading to React 19**.

Docusaurus v3 depends on React `18.x`. When initializing a new Docusaurus sites, it will use that new React `18.3` release. It's also the case if you decide to upgrade your dependencies, or re-generate your package manager lockfile.

It turns out in its current state, **Docusaurus had a few of those extra warnings to fix**, notably this one immediately appearing on your dev console on any page load and navigation:

> Warning: LoadableComponent uses the legacy contextTypes API which is no longer supported and will be removed in the next major release. Use React.createContext() with static contextType instead.

In [#10079](https://github.com/facebook/docusaurus/pull/10079), we got Docusaurus ready for React 19. We fixed all the React 18.3 warnings we encountered. In case we missed any, don't hesitate to [**report new warnings**](https://github.com/facebook/docusaurus/issues/10099) if you see them, to us but also to other Docusaurus third-party plugin authors.

### `createSitemapItems`

In [#10083](https://github.com/facebook/docusaurus/pull/10083), we introduced a new flexible `createSitemapItems()` hook to the sitemap plugin. This enables users to create/filter/transform/enhance the sitemap items with their own custom logic.

```ts
export default {
  presets: [
    [
      '@docusaurus/preset-classic',
      {
        sitemap: {
          // highlight-start
          createSitemapItems: async ({
            defaultCreateSitemapItems,
            ...params
          }) => {
            const items = await defaultCreateSitemapItems(params);
            return items.filter((item) => !item.url.includes('/tags/'));
          },
          // highlight-end
        },
      },
    ],
  ],
};
```

### Pages plugin improvements

The Docusaurus [pages plugin](/docs/api/plugins/@docusaurus/plugin-content-pages) has historically been lagging behind the docs and blog plugins in terms of available feature.

In [#10032](https://github.com/facebook/docusaurus/pull/10032) we normalized the options available on each core content plugins by adding a few the missing page plugins APIs related to the edit url and the last update metadata displayed at the bottom on Markdown pages.

```js
export default {
  presets: [
    [
      '@docusaurus/preset-classic',
      {
        pages: {
          // highlight-start
          editUrl:
            'https://github.com/facebook/docusaurus/tree/main/website/src/pages',
          editLocalizedFiles: true,
          showLastUpdateAuthor: true,
          showLastUpdateTime: true,
          // highlight-end
        },
      },
    ],
  ],
};
```

<IframeWindow url="/examples/markdownPageExample" />

:::note Only for Markdown pages

These new plugin options only apply to Markdown pages, and have no effect on React pages for which you have full control over the layout with JSX.

:::

## Other changes

Other notable changes include:

- [#10064](https://github.com/facebook/docusaurus/pull/10064): new site config option `siteConfig.markdown.anchors.maintainCase`
- [#9767](https://github.com/facebook/docusaurus/pull/9767): new `docusaurus deploy --target-dir` option
- [#10042](https://github.com/facebook/docusaurus/pull/10042): new (experimental) plugin API: `route.props`
- [#10060](https://github.com/facebook/docusaurus/pull/10060): optimizes the App entrypoint, avoid useless re-renders on navigations
- [#10080](https://github.com/facebook/docusaurus/pull/10080): `<Admonition>` component can render properly without heading/icon
- [#10091](https://github.com/facebook/docusaurus/pull/10091): `<Tabs>` props can now override defaults
- [#10090](https://github.com/facebook/docusaurus/pull/10090): `docusaurus serve` works better with a `/baseUrl/` pathname prefix
- [#10070](https://github.com/facebook/docusaurus/pull/10070): add missing theme translations for `pt-BR`
- [#10025](https://github.com/facebook/docusaurus/pull/10025): doc sidebar item label now impacts the doc pagination label

Check the **[3.3.0 changelog entry](/changelog/3.3.0)** for an exhaustive list of changes.