A FileSystem API for the web

The web really needs a proper filesystem to properly compete with native
apps. I'd love to make WebTorrent (https://webtorrent.io) use the disk
instead of in-memory storage, but there's no clear cross-browser solution.
So, in the meantime, torrent data is stored in memory and lost when the
user navigates to another page.

Is there an active effort to make this happen? These are the specs I'm
currently aware of:

1. File API (https://w3c.github.io/FileAPI/): widely implemented, 92%
support
2. File API (Directories and System) (https://www.w3.org/TR/file-system-api/):
Chrome only, deprecated, 51% support
3. FileSystem API (http://w3c.github.io/filesystem-api/): Meant to replace
previous deprecated effort, Browser support unclear, spec status unclear to
me

Spec #1 is quite good, but it doesn't spec an entire filesystem. Spec #2
would have been sufficient for our use case, but is deprecated. Spec #3
seems like the best hope. Is that being worked on?

Feross
Blog <http://feross.org/> | WebTorrent <https://webtorrent.io/> | Study
Notes <https://www.apstudynotes.org/>