export interface PreprocessOptions {
    maxLength?: number;
    stripMarkdown?: boolean;
    normalizeWhitespace?: boolean;
}
export interface PreprocessResult {
    text: string;
    wasTruncated: boolean;
    originalLength: number;
    finalLength: number;
}
export declare function stripMarkdown(text: string): string;
export declare function normalizeWhitespace(text: string): string;
export declare function truncateText(text: string, maxLength: number): {
    text: string;
    wasTruncated: boolean;
};
export declare function preprocessText(text: string, options?: PreprocessOptions): PreprocessResult;
export declare function checkTTSSuitability(text: string): {
    suitable: boolean;
    reason?: string;
};