type SizeInfo = {
    bytes: number;
    bytesPretty: string;
    percent: number;
    percentPretty: string;
};
export type SizeReport = {
    brotli: SizeInfo;
    gzip: SizeInfo;
    original: SizeInfo;
};
/**
 * Analyzes a file's size and its compressed sizes using Brotli and Gzip
 * @param filePath - Path to the file to analyze
 * @returns Promise containing detailed size report
 * @throws Error if file cannot be read or compressed
 */
export declare function createSizeReport(filePath: string): Promise<SizeReport>;
export {};