import { MetaField, MetaObject } from "@metaobjectsdev/metadata";
/**
 * Returns true if the given field should be included in sort operations.
 *
 * Rules (in priority order):
 *   1. @sortable: true  → always sortable (even without @filterable)
 *   2. @sortable: false → never sortable (overrides @filterable)
 *   3. no @sortable     → sortable iff @filterable === true
 */
export declare function isSortableField(field: MetaField): boolean;
/**
 * Returns all sortable field children of the given entity.
 */
export declare function sortableFields(entity: MetaObject): MetaField[];
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