TanStack Charts 1.0

TanStack Charts has reached 1.0, and Tanner Linsley is treating that less like a victory lap than a promise. The point, he says, isn’t just getting a line on the screen. It’s surviving what happens after that line becomes a real product feature, with more data, more demands, and more specific UI needs.

That’s the story running through his charting work from Nozzle to D3 to Chart.js 2.0 to react-charts. Each step fixed something, and each step eventually ran into a wall. React-charts worked well for a long time, but Linsley says he eventually wanted combinations it wasn’t built for. So he dug into the Grammar of Graphics and Observable Plot, then built TanStack Charts around a different idea: charts as composable marks, scales, axes, and interactions.

That structure matters because it lets developers add to a chart instead of replacing it. A line can get points. Bars can join the same view. Custom marks, custom scales, custom renderers, and odd interactions are all meant to fit into the same system. The selling point is not that the library does one chart type well; it’s that it gives you room to keep changing the chart as the application changes.

AI played a very practical role here. Linsley says he designed the API and experience himself, while AI handled the implementation, with extra polish around the type system. That type safety is a big deal in this setup because the data has to keep its shape as it moves through scales, marks, and interactions. If the types fall apart halfway through, the whole thing gets much less pleasant to use.

He’s also clearly thinking about the boring parts that decide whether a library sticks. SVG is the default, Canvas is available as a separate renderer, motion and animation plug in when needed, and compact scales plus D3 scale support are there for lighter-weight builds. The bigger promise is versioning discipline: TanStack wants 1.0 to mean you can build on the API without worrying that an update will force a rewrite, break AI-generated code, or even break the site itself.