From f56ddd8b23605f712bc10b2c5fa85b1965c35943 Mon Sep 17 00:00:00 2001
From: David Novakovic <dpn@dpn.name>
Date: Thu, 25 Sep 2025 09:38:49 +1000
Subject: [PATCH 1/2] yjs: wip adding indexeddb yjs provider wrapper

---
 packages/yjs/package.json                     |  1 +
 .../src/lib/providers/indexeddb-provider.ts   | 37 +++++++++++++++++++
 packages/yjs/src/lib/providers/types.ts       | 16 +++++++-
 yarn.lock                                     |  1 +
 4 files changed, 54 insertions(+), 1 deletion(-)
 create mode 100644 packages/yjs/src/lib/providers/indexeddb-provider.ts

diff --git a/packages/yjs/package.json b/packages/yjs/package.json
index 178bb93d07..794711a484 100644
--- a/packages/yjs/package.json
+++ b/packages/yjs/package.json
@@ -62,6 +62,7 @@
     "platejs": ">=49.2.21",
     "react": ">=18.0.0",
     "react-dom": ">=18.0.0",
+    "y-indexeddb": ">=9.0.12",
     "y-webrtc": "10.3.0"
   },
   "publishConfig": {
diff --git a/packages/yjs/src/lib/providers/indexeddb-provider.ts b/packages/yjs/src/lib/providers/indexeddb-provider.ts
new file mode 100644
index 0000000000..d2fdd7b3f4
--- /dev/null
+++ b/packages/yjs/src/lib/providers/indexeddb-provider.ts
@@ -0,0 +1,37 @@
+import type { Awareness } from 'y-protocols/awareness';
+import type * as Y from 'yjs';
+
+import { IndexeddbPersistence } from 'y-indexeddb';
+
+import type { IndexeddbProviderConfig, UnifiedProvider } from './types';
+
+export class IndexeddbProviderWrapper implements UnifiedProvider {
+  public _synced = false;
+  public readonly awareness: Awareness;
+  connect = () => {
+    return;
+  };
+  destroy = () => {
+    this.provider.destroy();
+  };
+  disconnect = () => {
+    return;
+  };
+  public readonly document: Y.Doc;
+  public readonly provider: IndexeddbPersistence;
+  public readonly type = 'indexeddb';
+  constructor({ options }: IndexeddbProviderConfig) {
+    this.provider = new IndexeddbPersistence(options.docName, options.ydoc);
+    this.document = this.provider.ydoc;
+    this.provider.once('synced', () => {
+      this._synced = true;
+    });
+    this.awareness = options.awareness;
+  }
+  get isConnected() {
+    return this._synced;
+  }
+  get isSynced() {
+    return this._synced;
+  }
+}
diff --git a/packages/yjs/src/lib/providers/types.ts b/packages/yjs/src/lib/providers/types.ts
index 695cbe554e..bcac307bb9 100644
--- a/packages/yjs/src/lib/providers/types.ts
+++ b/packages/yjs/src/lib/providers/types.ts
@@ -8,6 +8,7 @@ import type { Awareness } from 'y-protocols/awareness';
 import type * as Y from 'yjs';
 
 import type { WithYjsOptions } from '../withTYjs';
+import { IndexeddbProviderWrapper } from './indexeddb-provider';
 
 // Base config structure for provider configurations
 export interface BaseYjsProviderConfig extends ProviderEventHandlers {
@@ -94,6 +95,16 @@ export type WebRTCProviderOptions = {
   signaling?: string[];
 };
 
+export type IndexeddbProviderConfiguration = {
+  docName: string;
+  ydoc?: Y.Doc;
+};
+
+export type IndexeddbProviderConfig = BaseYjsProviderConfig & {
+  options: IndexeddbProviderConfiguration;
+  type: 'indexeddb';
+};
+
 export type YjsConfig = PluginConfig<
   'yjs',
   {
@@ -138,7 +149,10 @@ export type YjsConfig = PluginConfig<
 >;
 
 // Union type for all known provider configurations
-export type YjsProviderConfig = HocuspocusProviderConfig | WebRTCProviderConfig; // Add custom config types here if needed
+export type YjsProviderConfig =
+  | HocuspocusProviderConfig
+  | IndexeddbProviderConfig // Add custom config types here if needed
+  | WebRTCProviderConfig;
 
 // Extensible provider type that can include custom types
 export type YjsProviderType = DefaultYjsProviderType | string;
diff --git a/yarn.lock b/yarn.lock
index 513ece0674..09fb50be70 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3801,6 +3801,7 @@ __metadata:
     platejs: ">=49.2.21"
     react: ">=18.0.0"
     react-dom: ">=18.0.0"
+    y-indexeddb: ">=9.0.12"
     y-webrtc: 10.3.0
   languageName: unknown
   linkType: soft

From 058c356394493d644534d2311882974b6ffa6a23 Mon Sep 17 00:00:00 2001
From: David Novakovic <dpn@dpn.name>
Date: Thu, 25 Sep 2025 09:41:32 +1000
Subject: [PATCH 2/2] tidy

---
 packages/yjs/src/lib/providers/types.ts | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/packages/yjs/src/lib/providers/types.ts b/packages/yjs/src/lib/providers/types.ts
index bcac307bb9..57cde68659 100644
--- a/packages/yjs/src/lib/providers/types.ts
+++ b/packages/yjs/src/lib/providers/types.ts
@@ -8,7 +8,6 @@ import type { Awareness } from 'y-protocols/awareness';
 import type * as Y from 'yjs';
 
 import type { WithYjsOptions } from '../withTYjs';
-import { IndexeddbProviderWrapper } from './indexeddb-provider';
 
 // Base config structure for provider configurations
 export interface BaseYjsProviderConfig extends ProviderEventHandlers {
@@ -151,8 +150,8 @@ export type YjsConfig = PluginConfig<
 // Union type for all known provider configurations
 export type YjsProviderConfig =
   | HocuspocusProviderConfig
-  | IndexeddbProviderConfig // Add custom config types here if needed
-  | WebRTCProviderConfig;
+  | IndexeddbProviderConfig
+  | WebRTCProviderConfig; // Add custom config types here if needed
 
 // Extensible provider type that can include custom types
 export type YjsProviderType = DefaultYjsProviderType | string;