export type RandomAlgorithm = 'xoshiro256pp' | 'pcg64';
export type BiasType = 'slight_up' | 'moderate_up' | 'none' | 'slight_down' | 'moderate_down';
export interface RandomOptions {
    algorithm?: RandomAlgorithm;
    bias?: BiasType | number;
    seed?: string;
}
/**
 * 生成单个随机数 [0, 1)
 */
export declare function random(seed: string, options?: RandomOptions): number;
/**
 * 生成指定范围的随机整数 [min, max]
 */
export declare function randomInt(min: number, max: number, seed?: string, options?: RandomOptions): number;
/**
 * 生成指定范围的随机浮点数 [min, max)
 */
export declare function randomFloat(min: number, max: number, seed?: string, options?: RandomOptions): number;
/**
 * 生成随机布尔值
 */
export declare function randomBool(seed: string, probability?: number, options?: RandomOptions): boolean;
/**
 * 从数组中随机选择元素
 */
export declare function randomChoice<T>(array: T[] | readonly T[], seed?: string, options?: RandomOptions): T;
/**
 * 生成正态分布随机数
 * @param seed 种子
 * @param mean 均值
 * @param stdDev 标准差
 * @param options 随机数选项
 * @returns 服从正态分布的随机数
 */
export declare function normalRandom(seed: string, mean: number, stdDev: number, options?: RandomOptions): number;
/**
 * 创建随机数生成器
 */
export declare function createGenerator(seed: string, options: RandomOptions): () => number;
export declare function applyBias(generator: () => number, bias: BiasType | number): () => number;