/**
 * Utility functions for the connection filter plugin.
 */
export { getQueryBuilder, isComputedScalarAttributeResource } from 'graphile-plugin-utils';
/**
 * Check if a value is an empty object (no own enumerable keys).
 */
export declare function isEmpty(o: unknown): boolean;
/**
 * Get all computed attribute resources for a given source.
 */
export declare function getComputedAttributeResources(build: any, source: any): any[];
/**
 * Creates an assertion function that validates filter input values.
 *
 * Rejects empty objects in nested contexts (logical operators, relation filters)
 * and optionally rejects null literals based on the connectionFilterAllowNullInput option.
 *
 * Note: Top-level empty filter `{}` is handled in ConnectionFilterArgPlugin's
 * applyPlan — it's treated as "no filter" and skipped, not rejected.
 */
export declare function makeAssertAllowed(build: any): (value: unknown, mode: 'object' | 'list') => void;