message: bucket can be null
diff: @@ -81,7 +81,7 @@ declare class FilePicker<P extends FilePicker.Options = FilePicker.Options> exte
  * Parse a s3 key to learn the bucket and the key prefix used for the request
  * @param key - A fully qualified key name or prefix path
  */
  - protected static parseS3URL(key: string): { bucket: string; keyPrefix: string };
  + protected static parseS3URL(key: string): { bucket: string | null; keyPrefix: string };
  /**
  * @override
  