/// <reference types="node" />
/// <reference types="node" />
/// <reference types="node" />
import * as child_process from 'child_process';
import * as stream from 'stream';
export declare function syscall(cmd: string): SpawnResult;
export declare function execSync(cmd: string): SpawnResult;
export declare function spawnSync(cmd: string, args?: string[]): SpawnResult;
export interface SpawnOptions extends child_process.SpawnOptions {
    onData?: (data: Buffer) => string;
    onError?: (data: Buffer) => string;
    stdout?: stream.Writable;
    stderr?: stream.Writable;
    stdin?: stream.Readable;
}
export interface SpawnResult {
    code: number;
    first: string;
    stdout: string[];
    stderr: string[];
}
export interface SpawnPromise extends Promise<SpawnResult> {
    process: child_process.ChildProcessByStdio<stream.Writable, stream.Readable, stream.Readable>;
}
export declare function exec(cmd: string, options?: SpawnOptions): SpawnPromise;
export declare function spawn(cmd: string, args?: string[], options?: SpawnOptions): SpawnPromise;