export { ZError } from './common/ZError.js';
export { SyncLocker } from './common/SyncLocker.js';
export { AsyncQueue, createAsyncQueue, createAsyncQueues } from './common/AsyncQueue.js';

/**
 * 单例化一个class
 * 使用方法:
 * @singleton
 * class Test {}
 * new Test() === new Test() // returns `true`
 * 也可以不使用 decorator
 * const TestSingleton = singleton(Test)
 * new TestSingleton() === new TestSingleton() //returns 'true'
 */
declare const SINGLETON_KEY: unique symbol;
type Singleton<T extends new (...args: any[]) => any> = T & {
    [SINGLETON_KEY]: T extends new (...args: any[]) => infer I ? I : never;
};
declare const singleton: <T extends new (...args: any[]) => any>(classTarget: T) => T;

export { SINGLETON_KEY, type Singleton, singleton };