JSON to JavaScript PropTypes Converter

How to use

1. Paste a representative JSON object that reflects the prop shape your component expects.
2. Review the generated PropTypes definitions for nested shapes, required fields, and list values.
3. Copy the output into your component or shared props module and refine any app-specific validators.

Benefits

• Produces runtime React prop validation instead of documentation-only type hints.
• Helps plain-JS React teams define reusable component contracts faster.
• Makes Storybook and component review workflows easier when prop shapes are explicit.

Best use cases

• React codebases that still rely on PropTypes for runtime prop checks.
• Shared component libraries where prop shapes need to stay explicit in plain JavaScript.
• Teams documenting and validating Storybook examples or handoff props without TypeScript.

PropTypes tips

• Use this route when the result needs to run inside React components rather than only document data shapes.
• Review which fields should stay required after comparing the sample JSON against real component usage.
• Switch to the JSDoc route when you need editor hints for non-React utilities instead of runtime validation.

Implementation tips

• Review optional vs required props against real component usage before shipping.
• Extract shared PropTypes into separate modules when multiple components consume the same shape.
• Use the JSDoc route when the goal is editor hints for non-React JavaScript modules.

Sample JSON

{
  "id": 101,
  "name": "Ada Lovelace",
  "active": true,
  "roles": ["admin", "editor"],
  "profile": {
    "email": "ada@example.com",
    "score": 9.8
  }
}

Sample output

import PropTypes from 'prop-types';

export const UserModelPropType = PropTypes.shape({
  id: PropTypes.number.isRequired,
  name: PropTypes.string.isRequired,
  active: PropTypes.bool.isRequired,
});

FAQ