export interface StringifyOptions {
    sep?: string;
    eq?: string;
    encodeURIComponent?: (str: string) => string;
    filter?: (key: string, val: any) => any;
}
/**
 * 通过遍历对象的自身属性从给定的 obj 生成 URL 查询字符串
 *
 * stringify({ a: [1, 2, 3, 4], b: 'test' })
 *
 * // 'a=1&a=2&a=3&a=4&b=test'
 *
 */
export declare function stringify(obj: Record<string, any>, options?: StringifyOptions): string;