import type { DbAdapter, PreparedStatement, RunResult } from './sqlite-adapter.js';
/**
 * Translate the closed set of SQLite date/time idioms the economy query layer
 * uses into Postgres equivalents. Runs AFTER `translateSql` (so `?` are already
 * `$n`). Timestamp columns are stored as ISO-8601 TEXT in both dialects, so bare
 * `DATE(col)` casts through `timestamptz`. Ordered most-specific first.
 */
export declare function translateSqliteDates(sql: string): string;
/**
 * Connection-level failures where the query provably never executed (the pool
 * could not hand out or keep a live backend). These are safe to retry once —
 * the pg pool discards the dead client and dials a fresh one on the next query,
 * so a single retry transparently absorbs RDS failover / idle-drop / connect
 * timeout blips instead of surfacing a 500 the caller has to retry by hand.
 */
export declare function isTransientConnError(message: string): boolean;
export declare class SyncPgAdapter implements DbAdapter {
    private readonly worker;
    private readonly port;
    private counter;
    private readonly sleeper;
    constructor(dsn: string);
    /**
     * Drain the reply matching `expectedId`. The reply is enqueued on the port
     * before the worker notifies, but cross-thread delivery can lag under CPU
     * pressure — so poll on a wall-clock deadline (yielding via a 1ms Atomics.wait
     * between empty reads) rather than a fixed iteration count, which could give
     * up prematurely on a busy box and throw a spurious 500. Replies whose id does
     * not match are stale results of a previously abandoned (timed-out) query;
     * discard them so the port never cross-talks between requests.
     */
    private drainReply;
    private queryOnce;
    private query;
    run(sql: string, ...params: unknown[]): RunResult;
    get(sql: string, ...params: unknown[]): unknown;
    all(sql: string, ...params: unknown[]): unknown[];
    exec(sql: string): void;
    prepare(sql: string): PreparedStatement;
    transaction<T>(fn: () => T): T;
    close(): void;
}
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