MessengerExternalEventPatterns extension

Adds pattern-matching-related methods to MessengerExternalEvent.

on

Methods

map<TResult extends Object?>({required TResult newMessageArrived(MessengerExternalEventNewMessageArrived value)}) → TResult

Available on MessengerExternalEvent, provided by the MessengerExternalEventPatterns extension

A switch-like method, using callbacks.
mapOrNull<TResult extends Object?>({TResult? newMessageArrived(MessengerExternalEventNewMessageArrived value)?}) → TResult?

Available on MessengerExternalEvent, provided by the MessengerExternalEventPatterns extension

A variant of map that fallback to returning null.
maybeMap<TResult extends Object?>({TResult newMessageArrived(MessengerExternalEventNewMessageArrived value)?, required TResult orElse()}) → TResult

Available on MessengerExternalEvent, provided by the MessengerExternalEventPatterns extension

A variant of map that fallback to returning orElse.
maybeWhen<TResult extends Object?>({TResult newMessageArrived(String chatRoomId, ChatMessage? message, String? messageId)?, required TResult orElse()}) → TResult

Available on MessengerExternalEvent, provided by the MessengerExternalEventPatterns extension

A variant of when that fallback to an orElse callback.
when<TResult extends Object?>({required TResult newMessageArrived(String chatRoomId, ChatMessage? message, String? messageId)}) → TResult

Available on MessengerExternalEvent, provided by the MessengerExternalEventPatterns extension

A switch-like method, using callbacks.
whenOrNull<TResult extends Object?>({TResult? newMessageArrived(String chatRoomId, ChatMessage? message, String? messageId)?}) → TResult?

Available on MessengerExternalEvent, provided by the MessengerExternalEventPatterns extension

A variant of when that fallback to returning null