{"ast":null,"code":"import PropTypes from 'prop-types';\nimport chainPropTypes from '../chainPropTypes';\nfunction isClassComponent(elementType) {\n  // elementType.prototype?.isReactComponent\n  const {\n    prototype = {}\n  } = elementType;\n  return Boolean(prototype.isReactComponent);\n}\nfunction acceptingRef(props, propName, componentName, location, propFullName) {\n  const element = props[propName];\n  const safePropName = propFullName || propName;\n  if (element == null ||\n  // When server-side rendering React doesn't warn either.\n  // This is not an accurate check for SSR.\n  // This is only in place for Emotion compat.\n  // TODO: Revisit once https://github.com/facebook/react/issues/20047 is resolved.\n  typeof window === 'undefined') {\n    return null;\n  }\n  let warningHint;\n  const elementType = element.type;\n  /**\n   * Blacklisting instead of whitelisting\n   *\n   * Blacklisting will miss some components, such as React.Fragment. 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