export interface QueryParamOptions {
    name: string;
    transform?: ((...allParamValues: any[]) => any) | null;
    validators?: PropertyDecorator[];
}
/**
 * Creates a parameter decorator that extracts and processes a query parameter from an API Gateway event.
 *
 * This decorator allows you to:
 * 1. Extract a specific query parameter by name from the request
 * 2. Optionally transform the parameter value (e.g., convert string to number)
 * 3. Apply validation to ensure the parameter meets requirements
 *
 * @param options Configuration options for the query parameter
 * @param options.name The name of the query parameter to extract
 * @param options.transform Optional function to transform the parameter value (e.g., parseInt)
 * @param options.validators Optional array of validators to apply to the parameter
 *
 * @returns A parameter decorator that extracts and processes the specified query parameter
 *
 * @example
 * // Extract and convert 'age' query parameter to a number
 * @queryParam({name: 'age', transform: (val) => parseInt(val, 10)}) age: number
 */
export declare function queryParam(options: QueryParamOptions): any;