Fixed the build issue and pushed an update to this PR.

Root cause was a Prettier failure in two chart files touched by this change.

Latest commit: 67077e3 (Fix formatting in chart null guard changes)

Please recheck when you get a chance.

Just read the issue. Have you tried the solution suggested there?
I think this is not required in the component library; instead, it should be handled by the renderer or consumer.

Updated this PR to follow your suggestion.

I moved the runtime guard out of the chart component library and into packages/react-ui/src/genui-lib, so incomplete streamed props now short-circuit in the renderer layer before chart data reaches the components.

What changed in this update:

• reverted the components/Charts/* null-guard changes from this PR
• added stricter streamed-prop normalization in genui-lib/helpers.ts
• reused those helpers in the chart wrappers for array charts, categorical charts, and scatter datasets
• kept legacy slice fallback behavior intact

Latest commit: 556a592 (Move chart null guards into genui renderer)

Validation on my side:

• git diff --check
• targeted Prettier check on the touched files using the repo's Prettier settings/plugin

I couldn't run the full workspace typecheck/build here because this environment doesn't have the repo toolchain installed, but the PR is now aligned with the renderer/consumer approach you mentioned. Please recheck when you get a chance.

Hey! First of all, thank you for taking the time to put this PR together — we genuinely appreciate the contribution and the effort that went into it.

After carefully reviewing the PR and discussing it with the React Renderer maintainers, we’ve decided to address this by adding guards for nullish data on the renderer side in the react-lang package. Since that approach resolves the issue at the source, we won’t be moving forward with this PR.

That said, your contribution was genuinely helpful — it surfaced the issue clearly and gave us the push to investigate and fix it in what we believe is the right place. We really appreciate you taking the initiative here, and hope you’ll continue contributing in the future.