/**
 * 提取链接参数，兼容hash模式和history模式，以及拼接异常情况
 * @param {string} [url=''] 地址
 * @param {string} [key=''] 可选，若不为空，则提取返回该key对应的参数值
 * @returns 地址参数对象，或者是指定参数值
 * @example
 * const url = 'https://igame.qq.com?name=mike&age=18#/index?from=china&home=china'
 * const params = resolveUrlParams(url); // { from: 'china', home: 'china', name: 'mike', age: 18 }
 * const paramsAge =  resolveUrlParams(url, 'age'); // 18
 */
export declare function resolveUrlParams(url?: string, key?: string): string | Record<string, string> | undefined;