export type Middleware<C = any> = (context: C, next: () => Promise<any>) => Promise<any> | any;
export declare class Stack<C = any> {
    length: number;
    use(...middlewares: Middleware<C>[]): this;
    execute(context?: C, depth?: number): any;
    mount(condition: (context: C) => boolean, stack: Stack<C>): this;
}