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Changelog

0.19.0

New Features

  • Custom directives API — @json-render/core now supports custom directives via defineDirective, letting you declare new JSON shapes (like $format, $math) that resolve to computed values at render time. Directives compose naturally — nest $format over $math over $state and they resolve inside-out. All four renderers (React, Vue, Svelte, Solid) have built-in directive resolution (#279)
  • @json-render/directives — New package shipping seven ready-made directives: $format (date, currency, number, percent via Intl), $math (add, subtract, multiply, divide, mod, min, max, round, floor, ceil, abs), $concat, $count, $truncate, $pluralize, and $join. Also exports createI18nDirective for $t translation keys with {{param}} interpolation, and standardDirectives for one-line registration (#279)

Improvements

  • Example READMEs — Added documentation to the chat, dashboard, game-engine, and no-ai examples (#277)

Contributors

  • @ctate

0.18.0

New Features

  • Devtools — Five new packages for inspecting json-render apps in the browser: @json-render/devtools (framework-agnostic core), plus @json-render/devtools-react, @json-render/devtools-vue, @json-render/devtools-svelte, and @json-render/devtools-solid adapters. Drop <JsonRenderDevtools /> into your app to get a shadow-DOM-isolated panel with six tabs (Spec, State, Actions, Stream, Catalog, Pick), a DOM picker that maps clicked elements back to spec keys via data-jr-key, a capped event store, and server-side stream tap utilities. Floating toggle or Cmd/Ctrl + Shift + J, tree-shakes to null in production (#273)
  • Devtools example — New examples/devtools Next.js demo showing the full devtools panel wired up to an AI chat endpoint and a component catalog (#273)
  • Action observer and devtools flag in core — @json-render/core now exposes an action observer and a devtools enablement flag that adapters use to mirror actions and stream events into the panel (#273)

Bug Fixes

  • Zod 4 schema formatting — formatZodType now correctly handles z.record(), z.default(), and z.literal() types from Zod 4, which previously produced incorrect or empty output in generated prompts and schemas (#239)

Improvements

  • Zod 4 test coverage — Added unit tests for formatZodType covering record, default, and literal types to guard against regressions (#272)

Contributors

  • @ctate
  • @mvanhorn

0.17.0

New Features

  • Gaussian Splatting — Added GaussianSplat component to @json-render/react-three-fiber, bringing the component count to 20. Composable with all existing R3F components (lights, controls, post-processing) via drei's Splat loader (#259)
  • Standalone gsplat example — Experimental demo app showcasing Gaussian Splatting with gsplat.js (no Three.js dependency), featuring scene selector, live JSON spec viewer, and progress indicator (#259)
  • R3F gsplat example — Demo app with five scenes: splat showroom, splat with primitives, multi-splat, post-processing effects, and animated floating splat (#259)

Improved

  • AI output quality — Improved prompt output and schema generation for more reliable AI-generated specs (#268)

Contributors

  • @ctate
  • @willmanzoli

0.16.0

Improved

  • Release process — Switched from Changesets to a manual single-PR release workflow with changelog markers and automatic npm publish on version bump