[isekovanic]

Ticket: https://linear.app/stream/issue/REACT-1476/fix-odd-edge-cases-for-channel-list-recovery

🎯 Goal

A reconnect recovery re-hydrates every channel it gets back, and re-hydration replaces channel.state.membership with an equal copy. The channel preview selected the whole membership object only to read pinned_at, so every hydrated row re-rendered for it.

🛠 Implementation details

useChannelPreviewData now selects pinned (membership?.pinned_at != null) instead of membership, so a row re-renders for pinning only when the pinned state changes. The hook returns the same values as before.

Rows still re-render on a recovery, because latestMessage is also replaced with an equal copy on every re-hydration. That stays as it is, since our preview and integrators' custom previews can read any field of the message. On device, preview row renders per recovery stay at 86 with 120 channels loaded, so this change has no measurable effect on its own.

🎨 UI Changes

None.

🧪 Testing

• New useChannelPreviewData test: replacing membership with an equal copy does not re-render the hook, and pinning still updates it. The first test fails with the old selector.
• ChannelPreview tests and yarn test:typecheck pass.
• Checked on an Android emulator with a release build, together with the stream-chat-js recovery fixes.

☑️ Checklist

• I have signed the Stream CLA (required)
• PR targets the develop branch
• Documentation is updated
• New code is tested in main example apps, including all possible scenarios
  • SampleApp iOS and Android
  • Expo iOS and Android

[Stream-SDK-Bot]

SDK Size

title	develop	branch	diff	status
js_bundle_size	2037 KB	2020 KB	-17821 B	🚀
ai_components_size	163 KB	163 KB	-16 B	🚀