PropTypes.string.describe is not a function

[lokimckay]

Following the README instructions to install and use this module results in the following error

TypeError: react_desc__WEBPACK_IMPORTED_MODULE_2__.PropTypes.string.describe is not a function

Reproduction steps

Repro repo: https://github.com/lokimckay-references/react-desc-26

1. npx create-react-app myapp --use-npm
2. cd myapp
3. npm install react-desc
4. Create Anchor.js file and copy + paste code snippet found in README
5. In App.js, attempt to access the JSON output as described in readme

   import { AnchorWithSchema } from './Anchor';
   const documentation = AnchorWithSchema.toJSON();
   

Actual result

Expected result

JSON describing Anchor component PropTypes as per README

Versions

"dependencies": {
  "@testing-library/jest-dom": "^5.14.1",
  "@testing-library/react": "^11.2.7",
  "@testing-library/user-event": "^12.8.3",
  "react": "^17.0.2",
  "react-desc": "^4.1.3",
  "react-dom": "^17.0.2",
  "react-scripts": "4.0.3",
  "web-vitals": "^1.1.2"
},