import type { AutotaskQueryFilter, AutotaskApiQueryFilter } from '../types/general.js';
/**
 * Converts a nested filter structure into a flat array of filters that the Autotask API can understand.
 * This function handles the conversion of logical operators (AND/OR) into the appropriate format.
 *
 * @param filter - The filter to convert (can be a simple filter or a filter group)
 * @returns A flat array of filters in the format expected by the Autotask API
 */
export declare function convertToApiFilters(filter: AutotaskQueryFilter): AutotaskApiQueryFilter[];
/**
 * Validates that a filter structure is valid
 * @throws {Error} If the filter structure is invalid
 */
export declare function validateFilter(filter: AutotaskQueryFilter): void;
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