/**
 * Program uses a modified version of the `qss` package:
 * Copyright (c) Luke Edwards luke.edwards05@gmail.com, MIT License
 * https://github.com/lukeed/qss/blob/master/license.md
 */
/**
 * Encodes an object into a query string.
 * @param obj - The object to encode into a query string.
 * @param [pfx] - An optional prefix to add before the query string.
 * @returns The encoded query string.
 * @example
 * ```
 * // Example input: encode({ token: 'foo', key: 'value' })
 * // Expected output: "token=foo&key=value"
 * ```
 */
export declare function encode(obj: any, pfx?: string): string;
/**
 * Decodes a query string into an object.
 * @param str - The query string to decode.
 * @param [pfx] - An optional prefix to filter out from the query string.
 * @returns The decoded key-value pairs in an object format.
 * @example
 * // Example input: decode("token=foo&key=value")
 * // Expected output: { "token": "foo", "key": "value" }
 */
export declare function decode(str: any, pfx?: string): any;