@json-render/react

Name: json-render-react
Rating: 87
Author: vercel-labs

React renderer that converts JSON specs into React component trees.

Quick Start

typescript

import { Renderer } from "@json-render/react";
import { catalog } from "./catalog";

function App({ spec }) {
  return <Renderer spec={spec} catalog={catalog} />;
}

Creating a Catalog

typescript

import { defineCatalog, defineComponents } from "@json-render/react";
import { schema } from "@json-render/react"; // Uses element tree schema
import { z } from "zod";

// Define component implementations
const components = defineComponents(catalog, {
  Button: ({ props }) => (
    <button className={props.variant}>{props.label}</button>
  ),
  Card: ({ props, children }) => (
    <div className="card">
      <h2>{props.title}</h2>
      {children}
    </div>
  ),
});

// Create catalog with props schemas
export const catalog = defineCatalog(schema, {
  components: {
    Button: {
      props: z.object({
        label: z.string(),
        variant: z.enum(["primary", "secondary"]).nullable(),
      }),
      description: "Clickable button",
    },
    Card: {
      props: z.object({ title: z.string() }),
      description: "Card container with title",
    },
  },
});

Spec Structure (Element Tree)

The React schema uses an element tree format:

json

{
  "root": {
    "type": "Card",
    "props": { "title": "Hello" },
    "children": [
      { "type": "Button", "props": { "label": "Click me" } }
    ]
  }
}

Contexts

Context	Purpose
`DataContext`	Provide data for binding (`{{path.to.value}}`)
`ActionsContext`	Provide action handlers
`ValidationContext`	Form validation state
`VisibilityContext`	Conditional rendering

Key Exports

Export	Purpose
`Renderer`	Render spec to React components
`schema`	Element tree schema
`defineComponents`	Type-safe component registry
`useData`	Access data context
`useActions`	Access actions context