export declare function isNumber(val: unknown): boolean;
export declare class DecimalPrecision {
    static round(num: number, decimalPlaces: number): number;
    static ceil(num: number, decimalPlaces: number): number;
    static floor(num: number, decimalPlaces: number): number;
    static trunc(num: number, decimalPlaces: number): number;
    static toFixed(num: number, decimalPlaces: number): string;
    static countDecimals(num: number): number;
}