[Web][Feature request][OPFS] Please add "Origin-private filesystem" support, allowing native DBs on the web

[gintominto5329]

hello,

Currently, the recommended client-side persistence/storage solution, on web, is IndexedDB, but its API is quite-bad, I never found anyone using it directly, without abstractions,

So a new solution has been released by the web-sters, called "Origin-private FileSystem", which has support in all the browsers, except "Samsung Internet"(mobile), and "Internet Explorer"(desktop), even the slow-mover Safari supports it,

It allows the code(js/wasm), to access a filesystem-like, persistent, high-performance, and origin-private, storage medium,

• Permission prompts are not required to access files in the OPFS,
• The OPFS is subject to browser quota restrictions, just like IndexedDB,
• Clearing data for the site deletes the OPFS,

It just behaves as a filesystem, with files and directories, etc; but the implementation is vendor dependent, maybe inside another database, but the user gets a posix-inspired, sync, as well as async, filesystem-like API,

The performance capabilities of OPFS can be sensed from the fact that, it was originally developed to provide the persistence capabilities to sqlite.wasm, on the web, the same globally known embedded-database,

Specification is available at spec.whatwg.org

thanks,

[kevmoo]

Hello @gintominto5329 – where exactly do you want support added? in dart:html?

[gintominto5329]

Hello @gintominto5329 – where exactly do you want support added? in dart:html?

Yes sir,

dart:html should be the correct place,

Because it already has other FileSystem(and "OPFS")-related classes, like

• DirectoryEntry(web::FileSystemDirectoryHandle),
• FileEntry(web::FileSystemFileHandle), etc,

thanks,

[anlumo]

Note that the sync API is only supported in Web Workers, and Flutter does not support Web Workers.

[gintominto5329]

Note that the sync API is only supported in Web Workers, and Flutter does not support Web Workers.

IndexedDB docs, also have a note like "This feature is available in Web Workers",

maybe js-side abstraction, could be an answer here

[gintominto5329]

Any updates?
thanks

[kevmoo]

See https://github.com/dart-lang/web/blob/main/lib/src/dom/fs.dart

We're going to be moving all of our support to this package in the future. Improvements to dart:html and friends will likely be limited to critical bugs and blockers.

[gintominto5329]

See https://github.com/dart-lang/web/blob/main/lib/src/dom/fs.dart

We're going to be moving all of our support to this package in the future. Improvements to dart:html and friends will likely be limited to critical bugs and blockers.

I checked out package:web, but it was published 8 years ago.

So when, and how, could we use the new package.

thanks