export declare class NDJsonStats {
    static create(o?: Partial<NDJsonStats>): NDJsonStats;
    static empty(): NDJsonStats;
    static createCombined(stats: NDJsonStats[]): NDJsonStats;
    tookMillis: number;
    rows: number;
    sizeBytes: number;
    get rpsTotal(): number;
    get bpsTotal(): number;
    get avgBytesPerRow(): number;
    /**
     * Non-mutating addition, returns new object
     */
    add(s: NDJsonStats): NDJsonStats;
    toPretty(name?: string): string;
}