import type { QueryResult } from './types.js';
export type SqlExecutorFn = (sql: string) => Promise<unknown> | unknown;
export declare function registerSqlExecutor(name: string, execute: SqlExecutorFn): void;
export declare function lookupSqlExecutor(name: string): SqlExecutorFn | undefined;
/** Test isolation. Production code does not need this. */
export declare function resetSqlExecutorsForTests(): void;
export declare function assertLocalModuleSpec(spec: string): void;
export declare function loadExecutorModule(spec: string): Promise<SqlExecutorFn>;
/**
 * Normalise whatever the operator returned. Their claimed `rowCount` is
 * ignored — a lying executor must not shrink the cap check.
 */
export declare function normalizeExecutorResult(raw: unknown): QueryResult;
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