import type { Filter } from '@mathislair/mtbdb';
/**
 * Convert a flat (already-case-normalized) query record to either a plain
 * equality filter (no operator suffixes anywhere) or a WhereClause[] mixing
 * equality and operator clauses.
 *
 * Pure: caller is responsible for any case conversion before this runs.
 */
export declare function buildFilterFromQuery(query: Record<string, unknown>): Filter | undefined;
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