# Updates to CartContents

Released 1 Jun 2026. [Widgets 1.2.2](https://github.com/TicketSolutionsPtyLtd/roadie/blob/main/packages/widgets/CHANGELOG.md#122)

1 fix.

## Fixed

- `groupEventsByDay` no longer throws when a cart event is missing its `eventStartAtUtc` (ordering key) or `eventDateKey` (grouping key).

  See [CartContents](https://ticketsolutionsptyltd.github.io/roadie/roadie-widgets/cart-contents.md).

  Previously a single undefined key crashed the `.localeCompare` sort, which — because it runs inside the `CartContents` render — blanked the entire cart list (and surfaced as `TypeError: Cannot read properties of undefined (reading 'localeCompare')`).

  The grouping now coerces absent keys defensively (consistent with the package's
  untrusted-payload trust seam): every item still renders, dated events keep their
  correct order/grouping, and any undated events trail in a final group rather
  than taking down the whole drawer. Date headers/times for undated events fall
  back to empty via the existing render-layer guards.

  Note: this is defence-in-depth. Correct ordering/day-grouping still requires the
  consuming app to supply `eventStartAtUtc` + `eventDateKey` on each event.