export interface TextStreamSmootherConfig {
    charsPerSecond?: number;
    minUpdateInterval?: number;
    maxBufferSize?: number;
    enableAdaptiveSpeed?: boolean;
    adaptiveSpeedThreshold?: number;
    maxSpeedMultiplier?: number;
    onTextUpdate: (text: string) => void;
    onStreamComplete?: () => void;
}
export declare class TextStreamSmoother {
    private buffer;
    private displayedText;
    private isStreaming;
    private animationFrameId;
    private lastUpdateTime;
    private config;
    private streamEnded;
    private currentSpeedMultiplier;
    constructor(config: TextStreamSmootherConfig);
    addText(text: string): void;
    endStream(): void;
    reset(): void;
    private startStreaming;
    private stopStreaming;
    private streamLoop;
    private calculateAdaptiveSpeedMultiplier;
    private updateSpeedMultiplier;
    private calculateCharsToRelease;
    private releaseChars;
    private flushBuffer;
    getState(): {
        bufferLength: number;
        displayedLength: number;
        isStreaming: boolean;
        currentSpeedMultiplier: number;
        effectiveCharsPerSecond: number;
    };
}
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