import { RequestParameter } from '../transport/types.js';
import { Serializer } from './base-serializer.js';
/**
 * Serializer for URL query string parameters.
 * Converts query parameters into a URL query string.
 */
export declare class QuerySerializer extends Serializer {
    /**
     * Serializes query parameters into a URL query string.
     * @param queryParams - Map of query parameter names to their values
     * @returns A query string starting with "?" if parameters exist, empty string otherwise
     * @example
     * serialize(Map([["name", {...}], ["age", {...}]])) returns "?name=John&age=30"
     */
    serialize(queryParams: Map<string, RequestParameter>): string;
}
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