/**
 * Field-Level Access Control
 *
 * Enforces FieldAccessConfig (create/read/update) by filtering
 * fields from request data or response documents based on permissions.
 */
import type { Field, RequestContext } from '@momentumcms/core';
/**
 * Check if any fields in the collection have access control defined.
 * Recursively checks through all field nesting (groups, arrays, blocks, layout fields).
 * Used as a fast-path to skip processing when no field access is configured.
 */
export declare function hasFieldAccessControl(fields: Field[]): boolean;
/**
 * Filter fields the user cannot read from a response document.
 * Returns a new document with restricted fields removed.
 */
export declare function filterReadableFields(fields: Field[], doc: Record<string, unknown>, req: RequestContext): Promise<Record<string, unknown>>;
/**
 * Filter fields the user cannot create from input data.
 * Returns a new data object with restricted fields removed.
 */
export declare function filterCreatableFields(fields: Field[], data: Record<string, unknown>, req: RequestContext): Promise<Record<string, unknown>>;
/**
 * Filter fields the user cannot update from input data.
 * Returns a new data object with restricted fields removed.
 */
export declare function filterUpdatableFields(fields: Field[], data: Record<string, unknown>, req: RequestContext): Promise<Record<string, unknown>>;