export declare class RandomUtil {
    static shortId(): string;
    /**
     * random 5~6 length string
     * @returns state
     */
    static randomState(): string;
    /**
     * Client
     * @param prefix xaim
     * @returns string
     */
    static clientUUID(prefix?: string): string;
    /**
     * url
     * @param prefix xbot
     * @returns string
     */
    static createChatid(prefix?: string): string;
    /**
     * random base time
     * @returns reqid string
     */
    static createReqid(prefix?: string): string;
    /**
     *
     * @returns string
     */
    static createMsgid(): string;
    /**
     * base time random key part
     * @returns string
     */
    static genRandomCacheKey(): string;
    /**
     *
     * @param len
     * @returns
     */
    static randomNumberCode(len?: number): string;
    /**
     * which need an random id base on current time
     *
     * @param prifixSize min 2 max 4
     * @returns randomNo contains no & value
     */
    static randomNo36BaseTime(prifixSize?: number): RandomNoType;
}
/**
 * no : base36 string
 * value: number string
 */
export type RandomNoType = {
    no: string;
    value: string;
};