From 746ab97e068c460cfcb33d279d5e4823d2307ed6 Mon Sep 17 00:00:00 2001
From: sdev-buildz <310740165+sdev-buildz@users.noreply.github.com>
Date: Tue, 29 Sep 2026 17:49:37 +0530
Subject: [PATCH] docs(code-page): add 'apollo-state-sync' JavaScript client

added 'apollo-state-sync' library to the Code page.
'apollo-state-sync' is a TypeScript/JavaScript client.
---
 .../javascript/client/apollo-state-sync.md    | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 src/code/language-support/javascript/client/apollo-state-sync.md

diff --git a/src/code/language-support/javascript/client/apollo-state-sync.md b/src/code/language-support/javascript/client/apollo-state-sync.md
new file mode 100644
index 0000000000..50e967fc73
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+++ b/src/code/language-support/javascript/client/apollo-state-sync.md
@@ -0,0 +1,45 @@
+---
+name: Apollo State Sync
+description: Seamlessly synchronize and persist Apollo Client cache and reactive variables across multiple browser tabs and windows for a consistent user experience.
+github: sdev-buildz/apollo-state-sync
+npm: apollo-state-sync
+tags:
+  - tools-and-libraries
+  - frontend
+---
+
+## 💡 Why use it?
+
+Modern web apps often run across multiple browser tabs or windows within the same workflow. Without shared state synchronization, users can end up with inconsistent data:
+
+- logged in status differs across tabs
+- Data edited in one tab stays outdated in another until a manual refresh.
+- in-memory caches are inconsistent across tabs
+- app state resets unexpectedly when a tab is reopened
+
+<br/>
+
+## ✨ Features
+
+- Syncs Apollo Client's state (Apollo cache and reactive variables) across all browser tabs and windows.
+- Persists state across browser restarts and user sessions
+- Helps build multi-window and multi-tab apps without custom state plumbing
+
+<br/>
+
+## 🔌 API reference
+
+- 🚀 **Quick Start**: Jump into the [API Overview](https://github.com/sdev-buildz/apollo-state-sync/blob/6cd9a05467ade3a31ac0350aa9fe7cad3c3ae760/API_OVERVIEW.md) to get up and running in minutes.
+- 🤖 **Automated Migration**: Effortlessly transition from standard Apollo Client using the [Migration Bot](https://github.com/sdev-buildz/apollo-state-sync/blob/6cd9a05467ade3a31ac0350aa9fe7cad3c3ae760/README.md#-migration-automation).
+
+<br/>
+
+## 📽️ See it in Action
+
+[<img alt="demo video" width="240px" src="https://raw.githubusercontent.com/sdev-buildz/apollo-state-sync/refs/heads/main/assets/Shopping%20Site%20Example%20-%20Demo%20Thumbnail.png"/>](https://github.com/user-attachments/assets/18df5e73-f7a6-417f-8398-2bb8251ccc3e)
+
+<br/>
+
+### 🌐 Try the Live Demo
+
+You can access the live application here: https://sdev-buildz.github.io/apollo-state-sync/examples/posts