import type { SilkeIcons } from '../silke-icon/silke-icon';
import { SilkeFileValue, SilkeImageValue } from './utils';
/** File type category for the acceptedFileTypes prop */
export type SilkeFileCategory = 'image' | 'text';
/** Resolve file categories to a flat list of MIME patterns */
export declare function resolveFileCategories(categories: SilkeFileCategory[]): string[];
/**
 * Check if a MIME type matches a set of MIME patterns.
 * Supports exact matches ('text/csv') and wildcard subtypes ('image/*').
 */
export declare function matchesMimePattern(mimeType: string, patterns: string[]): boolean;
/**
 * Reads a File and converts it to a SilkeImageValue or SilkeFileValue.
 * Images produce SilkeImageValue for backward compatibility; other files produce SilkeFileValue.
 * Returns null if the file type is not in the accepted patterns.
 */
export declare function fileToAttachmentValue(file: File, acceptedTypes: string[]): Promise<SilkeImageValue | SilkeFileValue | null>;
/**
 * Extract the first matching file from a ClipboardEvent given accepted MIME patterns.
 */
export declare function getFileFromClipboard(e: React.ClipboardEvent, acceptedTypes: string[]): File | null;
/**
 * Extract the first matching file from a DragEvent given accepted MIME patterns.
 */
export declare function getFileFromDragEvent(e: DragEvent, acceptedTypes: string[]): File | null;
/**
 * Maps a MIME type to a SilkeIcon key for display.
 */
export declare function getFileIcon(mimeType: string): SilkeIcons;
/**
 * Truncate a filename for display, preserving the extension.
 */
export declare function truncateFilename(name: string, maxLength?: number): string;