import type { Span } from '@opentelemetry/api';
import { type ArvoEvent } from 'arvo-core';
import type { SyncEventResource } from '../../SyncEventResource';
import type { AcquiredLockStatusType } from '../../SyncEventResource/types';
import { MachineMemoryMetadata } from '../../MachineMemory/interface';
/**
 * Acquires an exclusive lock for event processing with validation.
 *
 * Attempts to obtain a lock on the event's subject to ensure exclusive access during
 * processing. Throws if lock cannot be acquired, preventing concurrent modifications.
 * @throws {TransactionViolation} When lock cannot be acquired
 */
export declare const acquireLockWithValidation: (syncEventResource: SyncEventResource<Record<string, any>>, event: ArvoEvent, metadata: MachineMemoryMetadata, span: Span) => Promise<AcquiredLockStatusType>;