/**
 * Trace / branch list reads for the v-next Postgres observability domain.
 *
 * - `listTraces` / `getRootSpan` filter by `parentSpanId IS NULL`. The partial
 *   indexes declared in ddl.ts make this predicate selective enough to act as
 *   the root-span projection without a separate table.
 * - `listBranches` filters by `spanType IN (BRANCH_SPAN_TYPES)` (or the
 *   user-supplied spanType when it's a branch type). Branches include nested
 *   anchors as well as root spans of the listed types.
 */
import type { GetRootSpanArgs, GetRootSpanResponse, ListBranchesArgs, ListBranchesResponse, ListTracesArgs, ListTracesResponse } from '@mastra/core/storage';
import type { DbClient } from '../../../client.js';
export declare function getRootSpan(client: DbClient, schema: string, args: GetRootSpanArgs): Promise<GetRootSpanResponse | null>;
export declare function listTraces(client: DbClient, schema: string, args: ListTracesArgs): Promise<ListTracesResponse>;
export declare function listBranches(client: DbClient, schema: string, args: ListBranchesArgs): Promise<ListBranchesResponse>;
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