json-render v0.18.0 release notes

json-render v0.18.0

v0.18.0Apr 17, 2026 · 6 months ago

Added 4

Add five new devtools packages (@json-render/devtools core plus React, Vue, Svelte, and Solid adapters) with a shadow-DOM-isolated panel featuring six tabs (Spec, State, Actions, Stream, Catalog, Pick), DOM picker mapping to spec keys via data-jr-key, capped event store, and server-side stream tap utilities, accessible via floating toggle or Cmd/Ctrl + Shift + J and tree-shaking to null in production
Add new examples/devtools Next.js demo showing devtools panel wired up to an AI chat endpoint and component catalog
Expose action observer and devtools enablement flag in @json-render/core for adapters to mirror actions and stream events
Add unit tests for formatZodType covering record, default, and literal types to guard against regressions

Fixed 1

Fix formatZodType to correctly handle z.record(), z.default(), and z.literal() types from Zod 4 which previously produced incorrect or empty output

From json-render

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)

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)

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

json-render v0.18.0