export interface FileInfo {
    path: string;
    relativePath: string;
    size: number;
    gzipSize: number;
    ext: string;
}
export interface SizeStatsReport {
    totalFiles: number;
    totalSize: number;
    totalGzipSize: number;
    compressionRatio: number;
    files: FileInfo[];
    byExtension: Record<string, {
        count: number;
        totalSize: number;
        totalGzipSize: number;
        avgSize: number;
        avgGzipSize: number;
    }>;
}
export declare function analyzeDirectory(dirPath: string, pattern?: string): SizeStatsReport;
export declare function formatSize(bytes: number): string;
export declare function generateTextReport(report: SizeStatsReport): string;
export declare function generateJsonReport(report: SizeStatsReport): string;
export declare function generateSizeReport(dirPath: string, pattern?: string): {
    text: string;
    json: SizeStatsReport;
};