export declare function setGlobalLeakWarningThreshold(n: number): () => void;
export declare class LeakageMonitor {
    readonly customThreshold?: number | undefined;
    readonly name: string;
    private _stacks;
    private _warnCountdown;
    constructor(customThreshold?: number | undefined, name?: string);
    dispose(): void;
    check(listenerCount: number): undefined | (() => void);
}