/**
 * F5 CLI - Excel Image Extractor
 *
 * Extracts embedded images from Excel detail sheets (No.XXX pattern)
 * Works with any Excel file that has detail sheets with images.
 *
 * @module @f5/cli/commands/import/converters/image-extractor
 * @version 1.0.0
 */
export interface ExtractedImage {
    issueId: string;
    sheetName: string;
    filename: string;
    extension: string;
    buffer: Buffer;
    mimeType: string;
    size: number;
}
export interface ImageExtractionResult {
    images: Map<string, ExtractedImage[]>;
    totalImages: number;
    sheetsProcessed: number;
    warnings: string[];
}
export interface ImageExtractorOptions {
    outputDir?: string;
    detailSheetPattern?: RegExp;
    saveImages?: boolean;
}
export declare class ImageExtractor {
    private filePath;
    private options;
    private warnings;
    constructor(filePath: string, options?: ImageExtractorOptions);
    /**
     * Check if the Excel file has detail sheets with images
     */
    hasDetailSheets(): Promise<boolean>;
    /**
     * Extract all images from detail sheets
     */
    extract(): Promise<ImageExtractionResult>;
    /**
     * Save extracted images to disk
     */
    saveImages(images: Map<string, ExtractedImage[]>): Promise<string[]>;
    /**
     * Get MIME type from extension
     */
    private getMimeType;
}
/**
 * Quick function to extract images from an Excel file
 */
export declare function extractExcelImages(filePath: string, outputDir?: string): Promise<ImageExtractionResult>;
export default ImageExtractor;