/// <reference types="node" />
import { Readable, Transform } from 'stream';
export declare function releaseAfterUseAsync<T>(fn: () => Promise<T>, cleanup?: () => any): Promise<T>;
export declare function prettifyAsyncErrors<T>(fn: () => Promise<T>, update: (message: string) => string): Promise<T>;
export declare function prettifySyncErrors<T>(fn: () => T, update: (message: string) => string): T;
export declare function bufferStream(stream: Readable): Promise<Buffer>;
export declare class BufferStream extends Transform {
    private readonly chunks;
    _transform(chunk: Buffer, encoding: string, cb: any): void;
    _flush(cb: any): void;
}
export declare class DefaultStream extends Transform {
    private readonly ifEmpty;
    active: boolean;
    constructor(ifEmpty?: Buffer);
    _transform(chunk: Buffer, encoding: string, cb: any): void;
    _flush(cb: any): void;
}
export declare function dynamicRequire(path: string): any;
export declare function sortMap<T>(values: Iterable<T>, mappers: ((value: T) => string) | Array<(value: T) => string>): T[];