README.md

@@ -99,6 +99,7 @@ Showcase](https://yjs-diagram.synergy.codes/).
 * [AWS SageMaker](https://aws.amazon.com/sagemaker/) Tools for building Machine
   Learning Models
 * [linear](https://linear.app) Streamline issues, projects, and product roadmaps.
+* [btw](https://www.btw.so) - Personal website builder
 * [AWS SageMaker](https://aws.amazon.com/sagemaker/) - Machine Learning Service
 * [Arkiter](https://www.arkiter.com/) - Live interview software
 * [Appflowy](https://www.appflowy.io/) - They use Yrs
@@ -164,7 +165,6 @@ are implemented in separate modules.
 | React / Vue / Svelte / MobX | | [SyncedStore](https://syncedstore.org) | [demo](https://syncedstore.org/docs/react) |
 | [mobx-keystone](https://mobx-keystone.js.org/) |  | [mobx-keystone-yjs](https://github.com/xaviergonz/mobx-keystone/tree/master/packages/mobx-keystone-yjs) | [demo](https://mobx-keystone.js.org/examples/yjs-binding) |
 | [PSPDFKit](https://www.nutrient.io/) |  | [yjs-pspdfkit](https://github.com/hoangqwe159/yjs-pspdfkit) | [demo](https://github.com/hoangqwe159/yjs-pspdfkit) |
-| [Rows n'Columns](https://www.rowsncolumns.app/) | ✔ | [@rowsncolumns/y-spreadsheet](https://docs.rowsncolumns.app/collaboration/yjs-collaboration) | |
 
 ### Providers
 
@@ -300,10 +300,6 @@ A database and connection provider for Yjs based on Firestore.
   Provides persistent storage for a web server using PostgreSQL and
   is easily compatible with y-websocket.  
   </dd>
-  <dt><a href="https://github.com/kapv89/k_yrs_go">k_yrs_go</a></dt>
-  <dd>
-  Golang database server for YJS CRDT using Postgres + Redis
-  </dd>
 </dl>
 
 ### Tooling

funding.json

@@ -34,19 +34,20 @@
       ]
     },
     {
-      "guid": "Titanic",
-      "name": "Y/Titanic",
+      "guid": "ystream",
+      "name": "Y/Stream",
       "description": "A provider for syncing millions of docs efficiently with other peers. This will become the foundation for building real local-first apps with Yjs.",
       "webpageUrl": {
-        "url": "https://github.com/yjs/titanic",
-        "wellKnown": "https://github.com/yjs/titanic/blob/main/.well-known/funding-manifest-urls"
+        "url": "https://github.com/yjs/ystream",
+        "wellKnown": "https://github.com/yjs/ystream/blob/main/.well-known/funding-manifest-urls"
       },
       "repositoryUrl": {
-        "url": "https://github.com/yjs/titanic",
-        "wellKnown": "https://github.com/yjs/titanic/blob/main/.well-known/funding-manifest-urls"
+        "url": "https://github.com/yjs/ystream",
+        "wellKnown": "https://github.com/yjs/ystream/blob/main/.well-known/funding-manifest-urls"
       },
       "licenses": [
-        "spdx:MIT"
+        "spdx:MIT",
+        "spdx:GPL-3.0"
       ],
       "tags": [
         "privacy",
@@ -89,9 +90,9 @@
         ]
       },
       {
-        "guid": "titanic-funding",
+        "guid": "ystream-funding",
         "status": "active",
-        "name": "Titanic Funding",
+        "name": "YStream Funding",
         "description": "Fund the next generation of local-first providers.",
         "amount": 30000,
         "currency": "USD",

src/utils/UndoManager.js

@@ -159,7 +159,7 @@ const popStackItem = (undoManager, stack, eventType) => {
  */
 export class UndoManager extends ObservableV2 {
   /**
-   * @param {Doc|AbstractType<any>|Array<AbstractType<any>>} typeScope Limits the scope of the UndoManager. If this is set to a ydoc instance, all changes on that ydoc will be undone. If set to a specific type, only changes on that type or its children will be undone. Also accepts an array of types.
+   * @param {Doc|AbstractType<any>|Array<AbstractType<any>>} typeScope Accepts either a single type, or an array of types
    * @param {UndoManagerOptions} options
    */
   constructor (typeScope, {
@@ -272,8 +272,6 @@ export class UndoManager extends ObservableV2 {
   }
 
   /**
-   * Extend the scope.
-   *
    * @param {Array<AbstractType<any> | Doc> | AbstractType<any> | Doc} ytypes
    */
   addToScope (ytypes) {

tests/undo-redo.tests.js

@@ -116,59 +116,6 @@ export const testEmptyTypeScope = _tc => {
   t.assert(yarray.length === 0)
 }
 
-/**
- * @param {t.TestCase} _tc
- */
-export const testRejectUpdateExample = _tc => {
-  const tmpydoc1 = new Y.Doc()
-  tmpydoc1.getArray('restricted').insert(0, [1])
-  tmpydoc1.getArray('public').insert(0, [1])
-  const update1 = Y.encodeStateAsUpdate(tmpydoc1)
-  const tmpydoc2 = new Y.Doc()
-  tmpydoc2.getArray('public').insert(0, [2])
-  const update2 = Y.encodeStateAsUpdate(tmpydoc2)
-
-  const ydoc = new Y.Doc()
-  const restrictedType = ydoc.getArray('restricted')
-
-  /**
-   * Assume this function handles incoming updates via a communication channel like websockets.
-   * Changes to the `ydoc.getMap('restricted')` type should be rejected.
-   *
-   * - set up undo manager on the restricted types
-   * - cache pending* updates from the Ydoc to avoid certain attacks
-   * - apply received update and check whether the restricted type (or any of its children) has been changed.
-   * - catch errors that might try to circumvent the restrictions
-   * - undo changes on restricted types
-   * - reapply pending* updates
-   *
-   * @param {Uint8Array} update
-   */
-  const updateHandler = (update) => {
-    // don't handle changes of the local undo manager, which is used to undo invalid changes
-    const um = new Y.UndoManager(restrictedType, { trackedOrigins: new Set(['remote change']) })
-    const beforePendingDs = ydoc.store.pendingDs
-    const beforePendingStructs = ydoc.store.pendingStructs?.update
-    try {
-      Y.applyUpdate(ydoc, update, 'remote change')
-    } finally {
-      while (um.undoStack.length) {
-        um.undo()
-      }
-      um.destroy()
-      ydoc.store.pendingDs = beforePendingDs
-      ydoc.store.pendingStructs = null
-      if (beforePendingStructs) {
-        Y.applyUpdateV2(ydoc, beforePendingStructs)
-      }
-    }
-  }
-  updateHandler(update1)
-  updateHandler(update2)
-  t.assert(restrictedType.length === 0)
-  t.assert(ydoc.getArray('public').length === 2)
-}
-
 /**
  * Test case to fix #241
  * @param {t.TestCase} _tc