export declare function isTransientDbError(err: any): boolean;
/** The AGE lazy-label-creation race, in BOTH manifestations (42P07 duplicate_table
 * and 23505 unique_violation on a pg_catalog index). Re-running the same
 * idempotent graph statement once the label exists succeeds. Label-agnostic. */
export declare function isLabelCreationRaceError(err: any): boolean;
export interface DbRetryHooks {
    onRetry?: (info: {
        label: string;
        attempt: number;
        error: any;
    }) => void;
}
/** Install process-wide retry observers (used by the eval perf/error report). */
export declare function setDbRetryHooks(hooks: DbRetryHooks): void;
export interface DbRetryOpts {
    tries?: number;
    /** Which errors are retryable. Default: isTransientDbError (connection class). */
    isRetryable?: (err: any) => boolean;
}
export declare function withDbRetry<T>(label: string, fn: () => Promise<T>, opts?: DbRetryOpts): Promise<T>;
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