@material-ui/utils/es/elementTypeAcceptingRef.js

Material-UI Utils - Utility functions for Material-UI.

import * as PropTypes from 'prop-types';
import chainPropTypes from './chainPropTypes';

function isClassComponent(elementType) {
  // elementType.prototype?.isReactComponent
  const {
    prototype = {}
  } = elementType;
  return Boolean(prototype.isReactComponent);
}

function elementTypeAcceptingRef(props, propName, componentName, location, propFullName) {
  const propValue = props[propName];
  const safePropName = propFullName || propName;

  if (propValue == null) {
    return null;
  }

  let warningHint;
  /**
   * Blacklisting instead of whitelisting
   *
   * Blacklisting will miss some components, such as React.Fragment. Those will at least
   * trigger a warning in React.
   * We can't whitelist because there is no safe way to detect React.forwardRef
   * or class components. "Safe" means there's no public API.
   *
   */

  if (typeof propValue === 'function' && !isClassComponent(propValue)) {
    warningHint = 'Did you accidentally provide a plain function component instead?';
  }

  if (warningHint !== undefined) {
    return new Error(`Invalid ${location} \`${safePropName}\` supplied to \`${componentName}\`. ` + `Expected an element type that can hold a ref. ${warningHint} ` + 'For more information see https://mui.com/r/caveat-with-refs-guide');
  }

  return null;
}

export default chainPropTypes(PropTypes.elementType, elementTypeAcceptingRef);