export declare function range(end: number, start?: number): number[];
export declare function toPrecision(num: number, precision?: number): number;
export declare function validateNumber(num: unknown): boolean;
export declare function isE(number: unknown): boolean;
export declare function getNumberPrecision(number: unknown): number;
export declare function sub(num1: number, num2: number): number;
export declare function toNum(v: number | string | undefined): number;
/**
 * 格式化数字字符串到指定小数位
 * @param {string} value 数字字符串
 * @param {number} precision 小数位数
 * @returns {string} 格式化后的字符串
 * @example
 * console.log(preciseString('111111111111111.888', 2)) // "111111111111111.89"
 * console.log(preciseString('9.999', 2)) // "10.00"
 */
export declare const preciseString: (value: string, precision?: number) => string;
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