export interface ConversationEvent {
    /** Component that emitted the event: "vad", "stt", "eos", "llm", "tts", "tool", "session", "turn" */
    readonly component: string;
    /** Sub-type: "speech_started", "interim", "final", "delta", "first_audio", "call_started", etc. */
    readonly type: string;
    /** Arbitrary key-value payload. Always includes "context_id". */
    readonly data: Readonly<Record<string, string>>;
    /** Wall-clock time of the event in ms since epoch. */
    readonly timestampMs: number;
}
/**
 * Create a ReadableStream of ConversationEvents that is fed by a callback.
 * Returns [stream, push] — call push(event) to enqueue, consumers read from stream.
 */
export declare function createConversationEventStream(): [
    ReadableStream<ConversationEvent>,
    (event: ConversationEvent) => void
];
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