declare class API {
    [key: string]: any;
    private $options;
    private $axios;
    private $function;
    private $history;
    constructor(urls: Record<string, unknown>, options?: Record<string, unknown>, $history?: any[]);
    $method(key: string, func: (...options: any) => void): void;
    $engine(key: string, func: (...options: any) => void): void;
    $on(key: string, func: (...options: any) => void): void;
}
export default API;