Interface ServerSentEventMessage<TData>

One JSON-encoded Server-Sent Event.

interface ServerSentEventMessage<TData = unknown> {
    data: TData;
    event?: string;
    id?: string;
    retry?: number;
}

Properties

data: TData

JSON-serializable event payload.

event?: string

Optional event type consumed by EventSource.addEventListener(...).

id?: string

Optional event identifier used by browsers for Last-Event-ID.

retry?: number

Optional browser reconnection delay in milliseconds.