/// <reference types="node" />
import { Context } from 'koa';
export interface ICacheHeaders {
    etag: string;
    lastModified: number;
}
export interface ICacheData {
    body: string | Buffer;
    etag: string;
    isBuffer: boolean;
    lastModified: number;
    type: string | null;
}
export declare const generateCacheData: (ctx: Context) => Promise<ICacheData>;