I have found that demo in source code can load local files, but stores in browser storage. Could demo application store as file (replace original)?
Could VisualEditor be packages as Electron application? May be it is already packaged? I want to use it as HTML visual editor.
It probably could be, although I don't think we tried it. The demo in the browser can't store files on your filesystem, but an Electron application could.
Look at minimal.html and demo.minimal.js for better examples if you're trying to integrate VisualEditor into another application. The default demo includes a lot of debugging features that you probably don't want.
I created issues to try as some point of time https://gitlab.com/dzmitry-lahoda/html-wysiwyg-desktop-visualeditor-electron
