import type { AgErrorMessageKey } from '../api/error';
/**
 * Typed error thrown during query hydration. Carries a locale key and variable
 * values so the catch boundary in {@link QueryPlanner} can report specific
 * validation issues instead of a generic "hydration failed" message.
 */
export declare class HydrationError extends Error {
    readonly key: AgErrorMessageKey;
    readonly variableValues?: Record<string, unknown> | undefined;
    constructor(key: AgErrorMessageKey, variableValues?: Record<string, unknown> | undefined);
}