/********************************************************************
 * @author:      Kaven
 * @email:       kaven@wuwenkai.com
 * @website:     http://blog.kaven.xyz
 * @file:        [Kaven-Basic] /src/libs/generate/GenerateRandomString.ts
 * @create:      2025-06-28 09:39:33.568
 * @modify:      2025-07-11 21:19:12.894
 * @version:     6.0.0
 * @times:       8
 * @lines:       69
 * @copyright:   Copyright © 2018-2025 Kaven. All Rights Reserved.
 * @description: [description]
 * @license:
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * SOFTWARE.
 ********************************************************************/
/**
 * Generates a random string of the specified length using the provided set of valid characters.
 *
 * @param length - The desired length of the generated string.
 * @param validCharacters - (Optional) A string containing the set of characters to use for generating the random string.
 *                          If not provided or if its length is less than 2, a default set of lowercase letters,
 *                          uppercase letters, and numbers will be used.
 * @returns A randomly generated string of the specified length.
 *
 * @version 1.0.0
 * @since 1.0.5
 */
export declare function GenerateRandomString(length: number, validCharacters?: string): string;
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