README

a async version for cross-spawn and make it return like as sync return

npm install cross-spawn-extra cross-spawn

demo

• Core API
• Options

export interface SpawnOptions
{
	cwd?: string;
	env?: any;
	stdio?: 'inherit' | 'ignore' | 'pipe' | any | Array<'inherit' | 'ignore' | 'pipe' | any>;
	detached?: boolean;
	uid?: number;
	gid?: number;
	shell?: boolean | string;
	windowsVerbatimArguments?: boolean;
	windowsHide?: boolean;

	/**
	 * Strip ANSI escape codes
	 */
	stripAnsi?: boolean,
}

export interface SpawnSyncOptions {
	cwd?: string;
	input?: string | Buffer;
	stdio?: 'inherit' | 'ignore' | 'pipe' | any | Array<'inherit' | 'ignore' | 'pipe' | any>;
	env?: any;
	uid?: number;
	gid?: number;
	timeout?: number;
	killSignal?: string;
	maxBuffer?: number;
	encoding?: string;
	shell?: boolean | string;
	windowsHide?: boolean;
	windowsVerbatimArguments?: boolean;

	/**
	 * Strip ANSI escape codes
	 */
	stripAnsi?: boolean,
}

import crossSpawn = require('cross-spawn-extra');
import crossSpawn from 'cross-spawn-extra';
import { async as crossSpawnAsync, sync as crossSpawnSync } from 'cross-spawn-extra';

import { CrossSpawn } = require('cross-spawn-extra/core');
import CrossSpawn from 'cross-spawn-extra';
import { CrossSpawn } from 'cross-spawn-extra';

//----------

const crossSpawn = new CrossSpawn(require('cross-spawn'));
const crossSpawn = CrossSpawn.use(require('cross-spawn'));

let bin = './bin/log0001';

let cp = crossSpawn('node', [
	bin,
], {
	cwd: __dirname,
	
	/**
	 * Strip ANSI escape codes
	 */
	stripAnsi: true,
})
	.then(function (child)
	{
		return log(child);
	})
	.catch(function (err)
	{
		let child = err.child;

		return log(child);
	})
;

function log(child: SpawnASyncReturns)
{
	let { stdout, stderr, output, _output, status, signal, pid } = child;
	
	// can still via stream, but it already close
	let { stderrStream, stdoutStream } = child;

	console.log({
		pid,
		error: !!child.error,
		status,
		stdout: stdout.toString(),
		stderr: stderr.toString(),
		_output: Buffer.concat(_output).toString(),
	});

	return child;
}

if typescript fail when use crossSpawn , try use crossSpawn.async

let bin = './bin/log0001';

let cp = crossSpawn.async('node', [
	bin,
], {
	cwd: __dirname,
})
	.then(function (child)
	{
		return log(child);
	})
	.catch(function (err)
	{
		let child = err.child;

		return log(child);
	})
;

stdout only show stdout
stderr only show stderr

but _output can show real output order

{ pid: 54268,
  error: false,
  status: 0,
  stdout: 'log 0\nlog 2\nlog 4\ndebug 5\nlog 6\ninfo 7\nlog 8\n',
  stderr: 'error 1\nwarn 3\n',
  _output:
   'log 0\nerror 1\nlog 2\nwarn 3\nlog 4\ndebug 5\nlog 6\ninfo 7\nlog 8\n' }