export type LogLevel = "trace" | "debug" | "info" | "warn" | "error" | "fatal" | "mark" | "off";
export type Dispose = () => any;
export type MayBeArray<T extends any> = T | T[];
/**
 * 异步锁---
 */
export declare class AsyncLock {
    private _lock;
    private _waitList;
    lock(): Promise<void>;
    unlock(): void;
}