Function deprecated

src/utils.js:103–113

(propType, explanation)

}

export function deprecated(propType, explanation) {
  return function validate(props, propName, componentName, ...rest) {
    if (props[propName] !== null && typeof props[propName] !== 'undefined') {
      warnOnce(
        `"${propName}" property of "${componentName}" has been deprecated.\n${explanation}`,
      );
    }

    return propType(props, propName, componentName, ...rest);
  };
}

// Shim Element if needed (e.g. in Node environment)
const Element =