/**
 * A Responses API streaming event. The stream ends on `response.completed`, `response.incomplete`, or `response.failed` — there is **no** `[DONE]` sentinel. On `glm5.3`, items **nest** in the event stream (for example a reasoning item wraps the message); pair events by `item_id`, not by arrival order. `sequence_number` increases strictly. Token usage arrives on the terminal event (there is no `stream_options`).
 */
export interface ResponseStreamEvent {
    /** The event type. */
    type: string;
    /** Accepts any additional properties */
    [key: string]: any;
}