message: Allow pretty-printing TopicReference AST nodes.
diff: @@ -2523,6 +2523,10 @@ function genericPrintNoParens(path: any, options: any, print: any) {
  case "V8IntrinsicIdentifier":
  return concat(["%", path.call(print, "name")]);
  + // https://github.com/babel/babel/pull/13191
  + case "TopicReference":
  + return fromString("#");
  +
  // Unhandled types below. If encountered, nodes of these types should
  // be either left alone or desugared into AST types that are fully
  // supported by the pretty-printer.
  