import numbro from 'numbro';
export declare const num: (input: any) => numbro.Numbro;
export declare const add: (a: number, b: number) => number;
export declare const subtract: (a: number, b: number) => number;
export declare const multiply: (a: number, b: number) => number;
export declare const divide: (a: number, b: number) => number;
export declare const sum: (...args: number[]) => number;
export declare const sumBy: <T>(array: readonly T[], iteratee: (item: T) => number) => number;