/**
 *   Wechaty Open Source Software - https://github.com/wechaty
 *
 *   @copyright 2022 Huan LI (李卓桓) <https://github.com/huan>, and
 *                   Wechaty Contributors <https://github.com/wechaty>.
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 */
import { type MailboxOptions } from './mailbox.js';
/**
 * Null destinations for Machine, Mailbox, Address, and Logger
 */
declare const machine: import("xstate").StateMachine<import("xstate").MachineContext, import("xstate").AnyEventObject, Record<string, import("xstate").AnyActorRef>, import("xstate").ProvidedActor, import("xstate").ParameterizedObject, import("xstate").ParameterizedObject, string, import("xstate").StateValue, string, unknown, import("xstate").NonReducibleUnknown, import("xstate").EventObject, import("xstate").MetaObject, any>;
declare const mailbox: import("./mailbox.js").Mailbox<import("xstate").EventObject>;
declare const address: import("./mailbox.js").Address;
declare const logger: MailboxOptions['logger'];
export { mailbox, machine, address, logger };
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