import type { FileServiceConfig, ValidationResult } from '../types';
export declare function validateFile(file: File, config?: FileServiceConfig): ValidationResult;
export declare function getFileType(file: File): string;
export declare function isImageFile(file: File): boolean;
export declare function isPdfFile(file: File): boolean;
export declare function isWordFile(file: File): boolean;
export declare function isExcelFile(file: File): boolean;
export declare function isCsvFile(file: File): boolean;
export declare function formatFileSize(bytes: number): string;
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