import { ConstraintError } from 'helpful-errors';
import type { SimpleCacheCondition } from '../../domain.objects/SimpleCache';
/**
 * thrown by a conditional cache's get(...) or set(...) when a condition.version precondition is not met
 *
 * i.e., the key was present/absent contrary to expectation, or the version did not match
 *
 * extends ConstraintError from helpful-errors — a caller-must-fix constraint violation (exit 2)
 * - metadata.key       — the cache key the condition was checked against
 * - metadata.condition — the version precondition that was required
 * - metadata.found     — the current version token found (undefined if absent)
 */
export declare class SimpleCacheConditionError extends ConstraintError<{
    key: string;
    condition: SimpleCacheCondition;
    found: string | undefined;
}> {
}