powersync_core

• Web: Fix decoding sync streams on status.

• DOCS: Point to uses in example. (4f4da24e)

• Add getCrudTransactions() returning a stream of completed transactions for uploads.
• Add experimental support for sync streams.
• Add new attachments helper implementation in package:powersync_core/attachments/attachments.dart.
• Add SwiftPM support.
• Add support for compiling powersync_core with build_web_compilers.

• Fix excessive memory consumption during large sync.

• Support latest versions of package:sqlite3 and package:sqlite_async.
• Stream client: Improve disconnect() while a connection is being opened.
• Stream client: Support binary sync lines with Rust client and compatible PowerSync service versions.
• Sync client: Improve parsing error responses.

• Update the PowerSync core extension to 0.4.2.
• Add support for raw tables, which are user-managed regular SQLite tables instead of the JSON-based views managed by PowerSync.

• Rust client: Fix uploading local writes after reconnect.
• PowerSyncDatabase.withDatabase: Rename loggers parameter to logger for consistency.
• Fix parsing HTTP errors for sync service unavailability.

Add a new sync client implementation written in Rust instead of Dart. While this client is still experimental, we intend to make it the default in the future. The main benefit of this client is faster sync performance, but upcoming features will also require this client. We encourage interested users to try it out by passing SyncOptions to the connect method:

database.connect(
  connector: YourConnector(),
  options: const SyncOptions(
    syncImplementation: SyncClientImplementation.rust,
  ),
);

Switching between the clients can be done at any time without compatibility issues. If you run into issues with the new client, please reach out to us!

• Use package:http instead of package:fetch_client on the web (since the former now uses fetch as well).
• Allow disconnecting in the credentials callback of a connector.
• Deprecate retry and CRUD upload durations as fields and independent parameters. Use the new SyncOptions class instead.
• Fix sync progress report after a compaction or defragmentation on the sync service.

• Report real-time progress information about downloads through SyncStatus.downloadProgress.
• Add trackPreviousValues option on Table which sets CrudEntry.previousValues to previous values on updates.
• Add trackMetadata option on Table which adds a _metadata column that can be used for updates. The configured metadata is available through CrudEntry.metadata.
• Add ignoreEmptyUpdates option which skips creating CRUD entries for updates that don't change any values.

• Fix deadlock when connect() is called immediately after opening a database.

• Introduce locks to avoid duplicate sync streams when multiple instances of the same database are opened.
• Refactor connect / disconnect internally.
• Warn when multiple instances of the same database are opened.
• Fix race condition causing data not to be applied while an upload is in progress.
• Web: Fix token invalidation logic when a sync worker is used.

• Fix handling token invalidation on the web.

• Raise minimum version of core extension to 0.3.11.

• Support bucket priorities and partial syncs.

• Add explicit casts in sync service, avoiding possible issues with dart2js optimizations.

• Web: Support running in contexts where web workers are unavailable.
• Web: Fix sync worker logs not being disabled.
• powersync_sqlcipher: Web support.

• Fix statusStream emitting the same sync status multiple times.

• Increase limit on number of columns per table to 1999.
• Avoid deleting the $local bucket on connect().

• Dart library for Powersync for use cases such as server-side Dart or non-Flutter Dart environments initial release.