/**
 * URL 相关工具函数
 */
export declare class URLHelper {
    /**
     * 获取 JS 基础 URL
     */
    static getJsBaseURL(customURL?: string): string;
    /**
     * 获取 Live2D 2 模型基础 URL
     */
    static getLive2d_2_ModelBaseURL(customURL?: string, jsBaseURL?: string): string;
    /**
     * 获取 Live2D 3 模型基础 URL
     */
    static getLive2d_3_ModelBaseURL(customURL?: string, jsBaseURL?: string): string;
}