Realm JavaScript v2.28.0

Enhancements

• Improve performance when using Chrome Debugging with React Native by adding caching and reducing the number of RPC calls required. Read-heavy workflows are as much as 10x faster. Write-heavy workflows will see a much smaller improvement, but also had a smaller performance hit to begin with. (Issue: #491, PR: #2373).
• Reduce bundle size for React Native apps. Thanks to @lebedev. (#2241)
• Support 64 bit for React Native Android. (#2221)

Fixed

• Opening a query-based Realm using new Realm did not automatically add the required types to the schema when running in Chrome, resulting in errors when trying to manage subscriptions. (PR: #2373, since v2.15.0).
• The Chrome debugger did not properly enforce read isolation, meaning that reading a property twice in a row could produce different values if another thread performed a write in between the reads. This was typically only relevant to synchronized Realms due to the lack of multithreading support in the supported Javascript environments. (PR: #2373, since v1.0.0).
• The RPC server for Chrome debugging would sometimes deadlock if a notification fired at the same time as a Realm function which takes a callback was called. (PR: #2373, since v1.0.0 in various forms).

Compatibility

• Realm Object Server: 3.21.0 or later.
• APIs are backwards compatible with all previous release of realm in the 2.x.y series.
• File format: Generates Realms with format v9 (Reads and upgrades all previous formats)