Interface Event

Marker interface for events.

Events represent things that have happened in the system. They should be named in past tense (UserCreated, OrderUpdated, ProductDeleted).

Example

interface UserCreatedEvent extends Event {
  userId: string;
  email: string;
  occurredAt: Date;
}

interface OrderUpdatedEvent extends Event {
  orderId: string;
  previousStatus: OrderStatus;
  newStatus: OrderStatus;
  occurredAt: Date;
}