/**
 * Encodes a parameter value using the provided encoder.
 *
 * @param value - The value to encode.
 * @param encoder - The encoder to use.
 * @returns The encoded value.
 */
export declare function encodeParam(value: string | string[], encoder: (value: string) => string): string;
/**
 * Normalizes a pathname to a consistent format.
 *
 * @param pathname - The pathname to normalize.
 * @returns The normalized pathname.
 */
export declare function normalizePathname(pathname: string): string;