/**
 * @fileoverview Caption Manager Hook - Manages caption state and transcript events
 *
 * This hook manages the caption system state, accumulating transcript deltas
 * and handling caption lifecycle (streaming, finalization, dismissal).
 *
 * @internal
 * Unofficial dev tool for testing speech transcription
 *
 * @module @vowel.to/client/components/hooks
 * @author vowel.to
 * @license Proprietary
 */
/**
 * Caption state
 */
export interface CaptionState {
    /** Current caption text */
    text: string;
    /** Role: user or assistant */
    role: 'user' | 'assistant';
    /** Whether caption is currently visible */
    isVisible: boolean;
    /** Timestamp when caption was created */
    timestamp: Date;
    /** Whether caption is being streamed (deltas arriving) */
    isStreaming: boolean;
}
/**
 * Hook to manage caption state and transcript events
 *
 * @returns Caption state and dismissal function
 */
export declare function useCaptionManager(): {
    caption: CaptionState | null;
    dismissCaption: () => void;
    showCaption: (text: string, role: "user" | "assistant", isStreaming?: boolean) => void;
};
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