/// <reference types="node" />
import { FileStats } from './types';
declare const generateThumbnail: (file: FileStats) => Promise<FileStats>;
declare const optimize: (buffer: Buffer) => Promise<{
    buffer: Buffer;
    info: {
        width: number;
        height: number;
        size: number;
    };
} | {
    buffer: Buffer;
}>;
declare const generateResponsiveFormats: (file: FileStats) => Promise<{
    key: string;
    file: FileStats;
}[]>;
export { generateThumbnail, generateResponsiveFormats, optimize };