import type { Asset } from 'react-native-image-picker';
import { CAMERA_MESSAGES } from './constants';
export declare const convertExtension: (file: Asset | undefined) => string;
export declare const validateFileSize: (fileSize?: number) => boolean;
export declare const validateImageFormat: (fileName?: string) => boolean;
export declare const validateVideoFormat: (fileName?: string) => boolean;
export declare const getFileExtension: (fileName: string) => string;
export declare const formatFileSize: (bytes: number) => string;
export declare const formatDuration: (seconds: number) => string;
export declare const shouldCompressImage: (width?: number, height?: number) => boolean;
export declare const calculateCompressedDimensions: (originalWidth: number, originalHeight: number) => {
    width: number;
    height: number;
};
export declare const getCameraPermissionMessage: () => string;
export declare const getErrorMessage: (errorType: keyof typeof CAMERA_MESSAGES) => string;
export declare const isVideoFile: (fileName?: string, mimeType?: string) => boolean;
export declare const isImageFile: (fileName?: string, mimeType?: string) => boolean;
export declare const generateThumbnailPath: (originalPath: string) => string;
export declare const cleanupTempFile: (filePath: string) => Promise<void>;
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