CollaborationExtension registered at runtime installs no sync plugin, so edits never reach the Y.Doc
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評估
- 難度
- 4/5
- 預估耗時
- 3-5 天
- 新手友好度
- 25/100
- Issue 類型
- 缺陷
- 描述清晰度
- 基本清楚
- 活躍度
- 活躍
- 技術堆疊
- react, typescript
研究方向
Start in ExtensionManager.replaceExtension, which installs the plugins of the extension passed in but skips its nested blockNoteExtensions; CollaborationExtension is where YSync, YCursor and YUndo live. Reproduce by creating an editor without the collaboration option and registering CollaborationExtension at runtime, then check whether the Y.XmlFragment changes after typing. Done means nested extensions are installed on runtime registration, or registration throws when they cannot be.
由索引模型根據 Issue 內容生成。
描述
Version: BlockNote 0.55 (@blocknote/core, @blocknote/react)
What happens
Collaboration registered on an editor that already exists doesn't sync. The editor becomes editable, typing works locally, and nothing is written to the Y.XmlFragment, so edits are silently lost.
We create a read-only editor without collaboration (fed a static snapshot, no provider). When the user switches to editing, we attach collaboration to that same editor instead of remounting it, which keeps scroll position and node views stable.
Cause (from reading the source)
ExtensionManager.replaceExtension installs the ProseMirror plugins of the extension it is given, but not those of that extension's nested blockNoteExtensions. For CollaborationExtension, the nested ones carry the actual plugins: YSync, YCursor, YUndo and the rest. So none of them are installed.
Workaround
Registering the sub-extensions flat works, in this order (the cursor plugin reads the sync plugin's state in its init):
- YSync
- YCursor
- YUndo
- ForkYDoc
- RelativePositionMapping
- SchemaMigration
FixUpSchemaExtension is not exported, so it can't be registered that way.
Repro
- Create an editor without the
collaborationoption. - Register
CollaborationExtensionat runtime, with aY.XmlFragmentand a provider. - Type in the editor.
- The fragment stays empty, and other clients see nothing.
Expected
Either nested blockNoteExtensions are installed when an extension is registered at runtime, or registering an extension whose nested extensions can't be installed throws instead of failing silently. A documented way to attach collaboration to an existing editor would also help.
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