empty_record_literal_with_comma

A record literal without fields can't have a trailing comma.

The analyzer produces this diagnostic when a record literal that has no fields has a trailing comma. Empty record literals can't contain a comma.

The following code produces this diagnostic because the empty record literal has a trailing comma:

var r = (,);

If the record is intended to be empty, then remove the comma:

var r = ();

If the record is intended to have one or more fields, then add the expressions used to compute the values of those fields:

var r = (3, 4);

Unless stated otherwise, the documentation on this site reflects Dart 3.8.0. Page last updated on 2025-05-08. View source or report an issue.