export type Nextable = Generator | AsyncGenerator;
export type Middleware = AsyncGeneratorFunction | GeneratorFunction | ((...data: any[]) => any | Promise<any>);
export default class OnionStack {
    length: number;
    [index: number]: Middleware;
    constructor(...list: Middleware[]);
    use(middleware: Middleware): this;
    [Symbol.iterator]: () => IterableIterator<any>;
    mount(stack: OnionStack): this;
    execute(...data: any[]): Promise<void>;
}