Error when trying to copy and paste text in the editor

[asasher]

Describe the bug
I'm getting the following error when trying to copy and paste text in the same editore

Uncaught TypeError: Cannot read properties of null (reading 'append')
    at closeFragment (index.js:1720:38)
    at closeFragment (index.js:1716:56)
    at closeFragment (index.js:1716:56)
    at replaceRange (index.js:1698:110)
    at Transaction.replaceRange (index.js:2002:9)
    at TextSelection.replace (index.js:90:16)
    at TextSelection.replace (index.js:252:15)
    at Transaction.replaceSelection (index.js:601:24)
    at doPaste (index.js:3645:25)
    at EditorView.pasteHTML (index.js:5660:16)
    at Gn.pasteHTML (BlockNoteEditor.ts:1637:27)
    at Bi (pasteExtension.ts:55:12)
    at Object.defaultPasteHandler (pasteExtension.ts:120:28)
    at BlockNoteExtensions.ts:274:23
    at Plugin.paste (pasteExtension.ts:113:24)
    at index.js:3108:26
    at EditorView.someProp (index.js:5514:50)
    at runCustomHandler (index.js:3106:17)
    at view.dom.addEventListener.view.input.eventHandlers.<computed> (index.js:3075:53)

To Reproduce

1. Type anything in the editor
2. Copy part of the the text, Cmd+C
3. Arrow down and paste, Cmd+V
4. Boom

Adding the following to package.json seems to fix the issue:

"pnpm": {
    "overrides": {
      "prosemirror-model": "1.25.0"
    }
  }

Here's the repo and a stackblitz demo-ing the issue:
Github Repo
Stackblitz

Misc

• Node version: v23.10.0

• Package manager: [email protected]

• Browser: Arc

• I'm a sponsor and would appreciate if you could look into this sooner than later 💖

[danlupascu]

1. I can confirm that this issue is happening on my side as well
2. It is fixed by using "prosemirror-model": "1.25.0", but only for raw text. If you copy-paste a piece of code from your IDE then this error shows up again.

Update: here's my temporary fix for this issue:

const editor = useCreateBlockNote({
    pasteHandler: ({ event, defaultPasteHandler }) => {
      try {
        // Try to use the default copy paste handler
        return defaultPasteHandler();
      } catch (e) {
        // If the default copy past handler fails then at least try to paste the contents as regular text
        if (event.clipboardData?.types.includes('text/plain')) {
          editor.pasteText(event.clipboardData.getData('text/plain'));
          return true;
        }
        throw e;
      }
    },
  });

[nperez0111]

Closing as tracked as part of #1645