Agenda for Ecma TC39 Incubator Call

Agenda items

A call focusing on the Intl.MessageFormat proposal, and issues raised during the Tokyo TC39 meeting.

Error handling: The current proposed API warns rather than throws on error, and provides a formatter method callback argument for customizing the behaviour. Is there an alternative that should be considered for this?
MessageFunction API: MF2 allows for user-definable functions that are available during formatting. As the results of these functions may be used in multiple different ways, the user-facing API for implementing this is a bit complex. Could it be simplified?