text: function deprecatedPropType(validator, reason) {
    if (process.env.NODE_ENV === 'production') {
      return () => null;
    }
  
    return (props, propName, componentName, location, propFullName) => {
      const componentNameSafe = componentName || '<<anonymous>>';
      const propFullNameSafe = propFullName || propName;
  
      if (typeof props[propName] !== 'undefined') {
        return new Error(`The ${location} \`${propFullNameSafe}\` of ` + `\`${componentNameSafe}\` is deprecated. ${reason}`);
      }
  
      return null;
    };
  }
  
  export default deprecatedPropType;