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Simek merged 2 commits into from
Dec 30, 2025
Merged

Update release levels example to Swift #4923

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4c23ac3
Update release levels example to Swift
bigcupcoffee Dec 12, 2025
cad9b01
Include both objc and swift
bigcupcoffee Dec 30, 2025
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17 changes: 16 additions & 1 deletion docs/releases/release-levels.md
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Expand Up @@ -3,6 +3,8 @@ id: release-levels
title: Release Levels
---

import Tabs from '@theme/Tabs'; import TabItem from '@theme/TabItem'; import constants from '@site/core/TabsConstants';

React Native provides the community with the ability to adopt individual new features as soon as their design and implementation are nearly complete, even before they are included in a stable release. This approach is known as **release levels**.

You can configure the release level of React Native so that your React Native instance will initialize with Feature Flags set to either `EXPERIMENTAL`, `CANARY`, or `STABLE` modes.
Expand Down Expand Up @@ -44,8 +46,21 @@ The build system generates different feature flag override classes for each rele

The `RCTReactNativeFactory` class now has an initializer that accepts a `releaseLevel` parameter. The feature flag setup uses this parameter to select the correct feature flag overrides.

```objc title="Example usage"
<Tabs groupId="ios-language" queryString defaultValue={constants.defaultAppleLanguage} values={constants.appleLanguages}>
<TabItem value="objc">

```objc title="AppDelegate.mm"
[[RCTReactNativeFactory alloc] initWithDelegate:delegate releaseLevel:Canary];
```

</TabItem>
<TabItem value="swift">

```swift title="AppDelegate.swift"
let factory = RCTReactNativeFactory(delegate: delegate, releaseLevel: RCTReleaseLevel.Canary)
```

</TabItem>
</Tabs>

The system ensures that only one release level is active per app instance, and will crash if multiple factories are created with different release levels.