docs(persister): document asynchronous serialization callbacks

[grzdev]

🎯 Changes

The createAsyncStoragePersister options documentation currently lists serialize and deserialize as synchronous functions returning string and PersistedClient.

In the implementation (packages/query-async-storage-persister/src/index.ts), both options accept and await MaybePromise<string> and MaybePromise<PersistedClient>. This update aligns the documented TypeScript interface signatures and adds a note explaining that both callbacks support synchronous and asynchronous (Promise) returns.

Documentation only. Verified against createAsyncStoragePersister implementation and types; git diff --check passes cleanly.

✅ Checklist

• I have followed the steps in the Contributing guide.
• I have tested code changes locally with pnpm run test:pr, or these tests do not apply to this pull request.
• I fully understand the code in this pull request, including any code generated with AI assistance.

🚀 Release Impact

• This change affects published code, and I have generated a changeset.
• This change is docs/CI/dev-only (no release).

Summary by CodeRabbit

• Documentation
  • Clarified that asynchronous storage serialization and deserialization callbacks may return results either synchronously or asynchronously.
  • Updated the documented callback types to reflect support for promises.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Team

Run ID: b624726f-05db-42af-9256-dc10e19f6fda

📥 Commits

Reviewing files that changed from the base of the PR and between 1893a96 and 774f927.

📒 Files selected for processing (1)

• docs/framework/react/plugins/createAsyncStoragePersister.md

Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review.

---

📝 Walkthrough

Walkthrough

The async storage persister documentation updates serialize and deserialize to support synchronous or promise-based results.

Changes

Async persister documentation

Layer / File(s)	Summary
Callback types and documentation docs/framework/react/plugins/createAsyncStoragePersister.md	The callback return types now use MaybePromise. The documentation states that callbacks can return results synchronously or asynchronously.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Merge Risk: ⚪ Minimal · up to 774f9

This documentation update accurately describes existing synchronous and Promise-based serialization support, with no runtime or release behavior changed.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the documentation update for asynchronous serialization callbacks.
Description check	✅ Passed	The description explains the changes and motivation, completes all required checklist sections, and correctly identifies the change as documentation-only with no release impact.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}