Auto-save or prompt when opening new Excalidraw file

[adamist521]

Problem

When opening a new Excalidraw file while another file is already open, the application switches to the new file without warning. Any unsaved changes in the previously opened file are lost.

( This may be out of this repository scope and I don't know whether this is even possible but it would be nice to have feature. )

Steps to reproduce:

1. Open an Excalidraw file and make some edits (don't save)
2. Open a different Excalidraw file
3. The app switches to the new file and unsaved changes from step 1 are lost

Expected behavior

The application should either:

• Automatically save the current file before opening a new one
• Show a dialog asking "Save changes before opening new file?" with options to Save, Don't Save, or Cancel

Related issues

• Autosave support excalidraw/excalidraw#2733
• Frustrated about no auto-save and backup excalidraw/excalidraw#6463
• feat: Add auto save support when working on an existing file excalidraw/excalidraw#3047

[4honor]

I've run into the same issue and I'm not sure how to fix it within this extension. I suggest we wait a bit to see if there are any updates. In the meantime, any PRs or ideas are welcome. Thanks!