export declare const SMOOTH_STREAMING_COMMIT_INTERVAL_MS = 16;
export declare const SMOOTH_STREAMING_LONG_TEXT_THRESHOLD_GRAPHEMES = 640;
export declare const SMOOTH_STREAMING_LONG_TEXT_TAIL_GRAPHEMES = 180;
export declare function splitStreamingTextGraphemes(text: string): string[];
export declare function resetSegmenterCache(): void;
export declare function initialSmoothStreamingGraphemeCount(graphemes: readonly string[]): number;
export declare function smoothStreamingRevealCount({ backlog, elapsedMs, inputDone, }: {
    backlog: number;
    elapsedMs: number;
    inputDone?: boolean;
}): number;
export declare function smoothStreamingPunctuationDelayMs(grapheme: string | undefined, backlog: number): number;