import type { SerializerOption } from './serializer';
type BuiltInSerializerOption = 'json' | 'v8' | 'auto';
export type AsyncSerializerMode = 'yield' | 'worker';
export declare class WorkerAsyncSerializer {
    private readonly _serializer;
    private _nextId;
    private readonly _slots;
    private _WorkerCtor;
    readonly workerCount: number;
    constructor(_serializer: BuiltInSerializerOption, workers?: number | 'auto');
    serialize(value: unknown): Promise<string | Buffer>;
    deserialize(data: string | Buffer): Promise<unknown>;
    private _request;
    private _getSlot;
    private _createSlot;
    private _getWorkerConstructor;
    private _handleMessage;
    private _rejectAll;
    private _scheduleIdleShutdown;
    private _clearIdleTimer;
    private _removeSlot;
    /**
     * Terminates every worker immediately. Pending requests are rejected.
     * The serializer must not be used after disposal.
     */
    dispose(): void;
}
export declare function createWorkerAsyncSerializer(option: SerializerOption | undefined, workers?: number | 'auto'): WorkerAsyncSerializer | null;
export {};
//# sourceMappingURL=asyncSerializer.d.ts.map