/**
 * Implements a Simple Moving Average algorithm.
 */
export declare class SimpleMovingAverage {
    readonly size: number;
    readonly data: number[];
    constructor(size: number, data?: number[]);
    /**
     * Next index of array to push to
     */
    private nextIndex;
    /**
     * Current average (calculated on the fly).
     * Returns 0 (not undefined) for empty data.
     */
    get avg(): number;
    /**
     * Push new value.
     * Returns newly calculated average (using newly pushed value).
     */
    pushGetAvg(n: number): number;
    /**
     * Push new value.
     */
    push(n: number): void;
}