import type { ProcessContext } from "../threading/process-context";
export declare function addDrainListener(cb: () => void): () => void;
export declare function notifyDrain(): void;
export declare function ref(): void;
export declare function unref(): void;
export declare function getRefCount(): number;
export declare function setRefCount(n: number): void;
export declare function resetRefCount(): void;
export declare function refCtx(ctx: ProcessContext): void;
export declare function unrefCtx(ctx: ProcessContext): void;
export declare function getRefCountCtx(ctx: ProcessContext): number;
export declare function addDrainListenerCtx(ctx: ProcessContext, cb: () => void): () => void;