I fixed a bug where using .include() caused base columns to get corrupted when a subscription fired a second time. The reevaluation function was being passed the output tuple (which included extra joined columns) instead of the original base columns, causing data to shift around.
I fixed an issue where query() and subscribe() weren't applying permission policies because the session wasn't being passed through. Now the client defaults to the JWT session resolved at construction time, so policies are always enforced.
I added Svelte 5 bindings for jazz-tools, including a reactive QuerySubscription class, context helpers, a user-switcher component, and a hook for linking external identities. This lets Svelte developers use Jazz with idiomatic Svelte 5 rune-based reactivity.
The Jazz website has a showcase page listing apps built with Jazz. I added two new projects — Alkalye and Hifz Garden — and redesigned the layout from a vertical list to a 3-column card grid with randomised ordering on each load. I also added a "Submit your app" button so other developers can easily get their projects listed.
I added support for floating-point columns in the database. The TypeScript side already allowed col.float() and generated the right SQL, but the Rust SQL parser was rejecting it with an "UnsupportedType" error.
I replaced a hand-rolled singularize function with the pluralize-esm library. The old function only handled a few suffix patterns and got common English plurals wrong — for example, it was turning "canvases" into "Canvase" instead of "Canvas".
I fixed a bug where using .include() on message queries caused the message text to come out garbled. The root cause was that an internal descriptor wasn't being updated after array subqueries were compiled, so the data was being read from the wrong columns.
I went back to my old Chicken Dinner Timer app and fixed a handful of small bugs I'd been meaning to sort out. I corrected an invalid input type, zero-padded the start time so the browser's time picker would actually bind to it, made the timeline entries sort by number instead of alphabetically, and fixed an addTime function that was ignoring the value it was given in favour of a stale closure variable.
When a user logged out of a Jazz React Native app, their session ID was accidentally left behind in secure storage even though the rest of their credentials were removed. I fixed the logout function to also clean up the session ID, so there's no leftover authentication data after signing out.
When you changed data in a Jazz app and then navigated to a server-rendered page, the server could show stale information because the changes hadn't finished syncing yet. I added an optional navigation prop to the Svelte provider that automatically waits for pending syncs to complete before letting the page transition happen, so the server always has the latest data.
I wrote a quickstart guide for React developers getting started with Jazz. It consolidates the main topics into a single reference so new users can get up and running quickly.
If you tried to create content in a Jazz group where you only had read access, it would silently succeed locally but then all the data would quietly fail to sync. I made it throw a clear error right away instead, so you know immediately that you don't have permission rather than scratching your head over why your data isn't showing up.
When a Jazz CoValue failed to load, you'd just get a vague "unavailable" error with no clue why. I added smarter error messages that tell you the actual reason -- for example, if your sync setting is set to "never" or "signedUp", the error now says so instead of leaving you guessing.
Jazz uses a rich text editor library called ProseMirror for collaborative editing. One of the packages it depended on had known security vulnerabilities and was no longer maintained. I replaced it with a much simpler, locally-written version that does just what Jazz actually needs, removing the security risk and the unnecessary bloat.
I fixed some code examples in the Jazz documentation that incorrectly used await when creating data objects. Creating these objects is actually instant (not asynchronous), so the examples were misleading developers about how the API works.
Jazz is a framework for building collaborative apps. One of the example projects in the Jazz repo needed a secret key stored in a config file, but that file isn't checked into source control for security reasons. This meant the project would fail to build for anyone cloning the repo fresh. I added a script that automatically generates the missing config file so builds just work out of the box.
AGENTS.md is a file that helps AI coding assistants understand a project. I added a comprehensive index of Jazz's documentation to this file, so that AI tools like Claude and Cursor can more easily find and reference the right docs when helping developers. I also wrote a script that automatically regenerates this index whenever the docs are built, so it stays up to date.
Jazz uses special data structures called CoRecords to store collaborative data. When you tried to convert a nested CoRecord to JSON (a common data format), the result was wrong because an internal mechanism was intercepting the conversion. I fixed the serialization logic so nested data structures convert to JSON correctly, and added tests to prevent this from breaking again.
Jazz is a framework for building collaborative apps. I added a set of "skills" -- reference documents that AI coding assistants like Claude and Cursor can use to write better Jazz code. These cover topics like performance optimization, permissions, UI integration, and testing, so that when you ask an AI to help you build a Jazz app, it has detailed, accurate guidance to draw on.
Jazz is a framework for building collaborative apps. The docs site has a minimal to-do list example on its landing page, but the icon was an external image that couldn't adapt to dark mode. I inlined the SVG so it can be styled with CSS, meaning it now automatically adjusts its colours when someone has dark mode enabled on their device.