website/community/5-release-process.mdx - main - githubmirror/docusaurus

website/community/5-release-process.mdx
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Sébastien Lorber
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# Release process

Let's see how Docusaurus handles **versioning, releases and breaking changes**.

:::info

This topic is particularly important for highly customized sites that may have difficulties to upgrade.

:::

## Semantic versioning {/* #semantic-versioning */}

Docusaurus versioning is based on the `major.minor.patch` scheme and respects [Semantic Versioning](https://semver.org/).

Respecting Semantic Versioning is important for multiple reasons:

- It **guarantees simple minor version upgrades**, as long as you only use the [public API](/community/release-process#public-api-surface)
- It follows front-end ecosystem conventions
- A new major version is an opportunity to thoroughly document breaking changes
- A new major/minor version is an opportunity to communicate new features through a blog post

### Major versions {/* #major-versions */}

The `major` version number is incremented on **every breaking change**.

Whenever a new major version is released, we publish:

- a blog post with feature highlights, major bug fixes, **breaking changes, and upgrade instructions**.
- an exhaustive changelog entry

:::tip

Read our [public API surface](#public-api-surface) section to clearly understand what we consider as a breaking change.

:::

### Minor versions {/* #minor-versions */}

The `minor` version number is incremented on every significant retro-compatible change.

Whenever a new minor version is released, we publish:

- a blog post with a list of feature highlights and major bug fixes
- an exhaustive changelog entry

:::tip

If you only use our [public API surface](#public-api-surface), you should be able to upgrade in no time!

:::

:::caution About End-of-Life Node.js versions

We may drop support for End-of-Life Node.js versions in minor Docusaurus versions. Check the [Node.js support policy](#nodejs-support) section for more details.

:::

### Patch versions {/* #patch-versions */}

The `patch` version number is incremented on bugfixes releases.

Whenever a new patch version is released, we publish:

- an exhaustive changelog entry

## Node.js support policy {/* #nodejs-support */}

Each major version of Docusaurus supports a minimum Node.js version. This retro-compatibility will be preserved all along that release line. This runtime backward compatibility will be preserved throughout all the minor versions of the release line, except for End-of-Life Node.js versions.

:::caution Support for End-of-Life versions

On minor releases, we reserve the right to drop support for Node.js versions that reached End-of-Life ([Node.js release process and schedule](https://nodejs.org/en/about/previous-releases). **We do not consider it a Docusaurus breaking change**. We highly recommend using a maintained Node.js version. Beware that [End-of-Life Node.js versions do not receive security updates anymore](https://nodejs.org/en/blog/announcements/node-18-eol-support).

:::

## Versions {/* #versions */}

```mdx-code-block
import {
  CurrentMajorVersionNumber,
  StableMajorBranchLink,
  MainBranchLink,
} from "@site/src/components/Versions";
```

The Docusaurus team uses a simple development process and only works on a single major version and a single Git branch at a same time:

- **Docusaurus {CurrentMajorVersionNumber}**: the **stable** version, on the <MainBranchLink/> branch.

:::note How we will ship the next version

Once we are ready ship **Docusaurus {CurrentMajorVersionNumber + 1}**, we will:

- create a <StableMajorBranchLink/> branch
- merge breaking changes on the <MainBranchLink/> branch
- release that new version directly from the <MainBranchLink/> branch

:::

:::warning Security fixes policy

After a new stable version has been released, the former stable version will continue to receive support for **major security issues** for **3 months**.

In practice, we will backport security fixes to the <StableMajorBranchLink/> branch. Otherwise, all features will be frozen and non-critical bugs will not be fixed.

It is recommended to upgrade within that time frame to the new stable version.

:::

## Public API surface {/* #public-api-surface */}

Docusaurus commits to respecting Semantic Versioning. This means that whenever changes occur in Docusaurus public APIs and break backward compatibility, we will increment the `major` version number.

:::tip

Docusaurus guarantees public API retro-compatibility across `minor` versions. Unless you use internal APIs, `minor` version upgrades should be easy.

:::

We will outline what accounts as the public API surface.

### Core public API {/* #core-public-api */}

✅ Our public API includes:

- Docusaurus config
- Docusaurus client APIs
- Docusaurus CLI
- Preset options
- Plugin options
- Plugin lifecycle APIs
- Theme config
- Core plugins route component props
- `@docusaurus/types` TypeScript types
  - We still retain the freedom to make types stricter (which may break type-checking).

❌ Our public API **excludes**:

- Docusaurus config `future`
- All features prefixed by `experimental_` or `unstable_`
- All features prefixed by `v<MajorVersion>_` (`v6_` `v7_`, etc.)

:::tip

For non-theme APIs, any documented API is considered public (and will be stable); any undocumented API is considered internal.

:::

An API being "stable" means if you increment the patch or minor version of your Docusaurus installation without any other change, running `docusaurus start` or `docusaurus build` should not throw an error.

### Theming public API {/* #theming-public-api */}

Docusaurus has a very flexible theming system:

- You can use custom CSS
- You can [swizzle](/docs/swizzling) any React theme component

This system also implicitly creates a very large API surface. To be able to move fast and improve Docusaurus, we can't guarantee retro-compatibility.

✅ Our public theming API includes:

- [Theme class names](/docs/styling-layout#theme-class-names)
- [Infima](/docs/styling-layout#styling-your-site-with-infima) class names and CSS variables
- React components that are [safe to swizzle](/docs/swizzling#what-is-safe-to-swizzle)
- The theme user experience
- Browser support

:::tip

You may not be able to achieve your site customization through this public API.

In this case, please [report your customization use case](https://github.com/facebook/docusaurus/discussions/5468) and we will figure out how to expand our public API.

:::

❌ Our public theming API **excludes**:

- The DOM structure
- CSS module class names with a hash suffix (usually targeted with `[class*='myClassName']` selectors)
- React components that are [unsafe or forbidden to swizzle](/docs/swizzling#what-is-safe-to-swizzle)
- React components that import from `@docusaurus/theme-common/internal`
- The exact visual appearance of the theme

:::note

When [swizzling](/docs/swizzling) safe components, you might encounter components that import undocumented APIs from `@docusaurus/theme-common` (without the `/internal` subpath).

We still maintain retro-compatibility on those APIs (hence they are marked as "safe"), but we don't encourage a direct usage.

:::