TW5-browser-nativesaver

I used https://github.com/slaymaker1907/TW5-browser-nativesaver, that still works with the current version 5.3.8, though just in Chromium based browsers. You save the file once and from then on, as long as the tab is open, it autosaves itself.

I thought it was really interesting that Safari on iOS apparently has some support for this API. Usually Safari is far behind the other vendors in support for this sort of stuff, but they even beat mobile Chrome. Personally, I'm really excited for this API or something equivalent to be standardized. It will really expand what is possible to do in the browser. For example, I wrote a plugin that lets TiddlyWiki autosave to disk https://github.com/slaymaker1907/TW5-browser-nativesaver.

It's sort of a double prompt scenario since the FileSystemAccessAPI requires users to actually select the file/directory for the web app to use. You can save the file handles into IndexedDB in which case the user will only be prompted if they refresh the page to authorize the web app to continue using that file/directory. From my use of it, the only real vulnerability I see is that Chrome still considers anything from file:// to be the same origin. This means as a developer you absolutely should not be saving file handles to IndexedDB if you are loading your app via file:// instead of https://. This is a pretty niche use case, but I do think static html "apps" are an underappreciated form for distributing software and this new API makes such apps a lot more powerful. I wrote a plugin for TiddlyWiki that lets it operate really smoothly usi