Kora.js Changelog

0.4.0

E2E Sync Encryption -- AES-256-GCM encryption with PBKDF2 key derivation for end-to-end encrypted sync
State Machine Constraints -- Enum fields support .transitions() to declare allowed state changes, enforced during mutations and merge
Migration Rollbacks -- Auto-generated inverse migration steps with canAutoRollback() and explicit .down() support
Referential Integrity in Merge -- Concurrent delete/insert conflicts resolved via onDelete policies (cascade, set-null, restrict)
Sync Diagnostics & Metrics -- Real-time bandwidth estimation, RTT percentiles, and operation counters
Awareness/Presence Protocol -- Ephemeral collaborative state with usePresence() and useCollaborators() hooks
Bloom Filter Subscriptions -- Optimized subscription invalidation using bloom filters for high-volume reactive queries
Sync Scope Filtering -- operationMatchesScope() and filterOperationsByScope() for operation-level access control
Protobuf Code Generation -- generateProtoDefinitions(schema) generates .proto definitions from your schema

Atomic Field Operations -- op.increment(), op.decrement(), op.max(), op.min(), op.append(), op.remove()
Schema-Level Merge Strategies -- .merge('counter'), .merge('max'), .merge('min'), .merge('append-only'), .merge('server-authoritative')
Transactions -- app.transaction() and app.mutation() for atomic multi-collection operations
Sequences -- app.sequences.next() for offline-safe formatted ID generation
Schema Migrations -- migrate() builder with addField, removeField, renameField, addIndex, removeIndex, backfill
Testing Harness -- @korajs/test with createTestNetwork(), TestDevice, expectConverged()