import { DataItemType } from '../service/data-set/data-item-type.js';
/**
 * MIME type mappings for media types
 */
export declare const MEDIA_MIME_TYPES: {
    image: string[];
    video: string[];
    audio: string[];
};
/**
 * File extension to MIME type mapping
 */
export declare const EXTENSION_TO_MIME: Record<string, string>;
/**
 * Check if a MIME type is valid for a given media type
 */
export declare function isValidMimeType(mediaType: DataItemType, mimetype: string): boolean;
/**
 * Check if file extension is allowed based on options.accept
 */
export declare function isAcceptedFormat(filename: string, acceptFormats?: string[]): boolean;
/**
 * Validate file size against options.maxSize
 */
export declare function isValidFileSize(fileSize: number, maxSize?: number): boolean;
/**
 * Validation result
 */
export interface MediaValidationResult {
    valid: boolean;
    errors: string[];
}
/**
 * Validate media file against DataItem options
 */
export declare function validateMediaFile(file: {
    mimetype: string;
    size?: number;
    name: string;
}, mediaType: DataItemType, options?: {
    accept?: string[];
    maxSize?: number;
}): MediaValidationResult;
/**
 * Check if a DataItemType is a media type
 */
export declare function isMediaType(type: DataItemType): boolean;
/**
 * Check if a DataItemType is a file or media type
 */
export declare function isFileOrMediaType(type: DataItemType): boolean;