add collab commands

packages/core/src/CommandManager.ts

@@ -53,7 +53,9 @@ export default class CommandManager {
         const method = (...args: any) => {
           const callback = command(...args)(props)
 
-          view.dispatch(tr)
+          if (tr.steps.length) {
+            view.dispatch(tr)
+          }
 
           return callback
         }
@@ -72,7 +74,7 @@ export default class CommandManager {
     return new Proxy({}, {
       get: (_, name: string, proxy) => {
         if (name === 'run') {
-          if (!hasStartTransaction && shouldDispatch) {
+          if (!hasStartTransaction && shouldDispatch && tr.steps.length) {
             view.dispatch(tr)
           }
 

packages/extension-collaboration/src/index.ts

@@ -1,4 +1,4 @@
-import { Extension } from '@tiptap/core'
+import { Extension, Command } from '@tiptap/core'
 import {
   redo,
   undo,
@@ -15,6 +15,31 @@ const Collaboration = Extension.create({
     provider: null,
   },
 
+  addCommands() {
+    return {
+      /**
+       * Undo recent changes
+       */
+      undo: (): Command => ({ state }) => {
+        return undo(state)
+      },
+      /**
+       * Reapply reverted changes
+       */
+      redo: (): Command => ({ state }) => {
+        return redo(state)
+      },
+    }
+  },
+
+  addKeyboardShortcuts() {
+    return {
+      'Mod-z': () => this.editor.commands.undo(),
+      'Mod-y': () => this.editor.commands.redo(),
+      'Shift-Mod-z': () => this.editor.commands.redo(),
+    }
+  },
+
   addProseMirrorPlugins() {
     return [
       ySyncPlugin(
@@ -24,14 +49,6 @@ const Collaboration = Extension.create({
     ]
   },
 
-  addKeyboardShortcuts() {
-    return {
-      'Mod-z': () => undo(this.editor.state),
-      'Mod-y': () => redo(this.editor.state),
-      'Mod-Shift-z': () => redo(this.editor.state),
-    }
-  },
-
   onDestroy() {
     this.options.provider?.destroy()
   },