Ideas for Arc XP

Arc's @arc-fusion/prop-types overrides/extends the standard React prop-types module to add Arc-specific custom types. However, rather than extending the existing checkPropTypes function that exists in the standard React prop-types module to handle Arc's custom types, @arc-fusion/prop-types simply excludes this function entirely:

const isPropTypeSelfRef = (key) => ['PropTypes', 'checkPropTypes'].includes(key)
const ignorePropTypeSelfRefs = (key) => !isPropTypeSelfRef(key)
const FusionPropTypes = Object.assign(
  ...Object.keys(PropTypes)
    .filter(ignorePropTypeSelfRefs)
    .map(key => ({ [key]: taggable(PropTypes[key], key) })),
  require('./custom-types')
)

This present a problem when using other libraries that use the prop-types module and expect the checkPropTypes function to exist. For example, when I try to use the Downshift library, I get this error:

Uncaught TypeError: prop_types__WEBPACK_IMPORTED_MODULE_4___default.a.checkPropTypes is not a function
    validatePropTypes downshift.esm.js:3125
    useCombobox downshift.esm.js:3257
    Autocomplete default.jsx:20
    React 16
    render index.js:55
    EventListener.handleEvent* index.js:80
    js react.js:984
    __webpack_require__ react.js:20
    <anonymous> react.js:84
    <anonymous> react.js:87
downshift.esm.js:3125:14

I would like the arc-fusion/prop-types module to extend the checkPropTypes function so that it is compatible with other third party libraries that expect it to exist and function as intended.