export declare function create_exponential_moving_average(options: {
    initial_value?: number;
} & ({
    alpha: number;
} | {
    beta: number;
})): {
    next: (current_value: number) => number;
    get_value: () => number;
    alpha: number;
    beta: number;
};
export declare function create_sliding_window_average(options: {
    window_size: number;
    initial_value?: number;
}): {
    next: (current_value: number) => number;
    get_value: () => number;
    window_size: number;
};