import { ImageContent, FileContent } from '../types/index.js';
export declare class FileHandler {
    private static readonly IMAGE_EXTENSIONS;
    private static readonly PDF_EXTENSION;
    private static readonly MIME_TYPES;
    private static readonly MAX_IMAGE_SIZE;
    private static readonly MAX_PDF_SIZE;
    static isImage(filepath: string): boolean;
    static isPDF(filepath: string): boolean;
    static isSupported(filepath: string): boolean;
    static getMimeType(filepath: string): string;
    static loadImage(filepath: string): Promise<ImageContent>;
    static loadPDF(filepath: string): Promise<FileContent>;
    static loadFile(filepath: string): Promise<ImageContent | FileContent>;
    static extractFilePaths(input: string): string[];
    static removeFileReferences(input: string): string;
}
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