Interface SseEvent

Wire format for one SSE frame. data must be a single-line string (newlines escaped).

interface SseEvent {
    data: string;
    event: string;
    id?: string;
    retry?: number;
}

Properties

data: string

Payload — for HTMX morph swaps this is an HTML fragment.

event: string

SSE event name (maps to hx-trigger on the client).

id?: string

Optional dedupe id; browsers track the Last-Event-ID header.

retry?: number

Retry hint in milliseconds sent to the browser on connect.