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cross-spawn

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cross-spawn

Cross platform child_process#spawn and child_process#spawnSync

  • 4.0.0
  • Source
  • npm
  • Socket score

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Weekly downloads
90M
increased by25.12%
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1
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What is cross-spawn?

The cross-spawn npm package is a cross-platform solution for spawning child processes in Node.js. It aims to resolve issues with spawning commands across different operating systems, particularly Windows, where the built-in child_process.spawn can behave inconsistently. It provides a consistent API for spawning processes and handling their output, errors, and exit codes.

What are cross-spawn's main functionalities?

Spawning a child process

This feature allows you to spawn a child process, similar to child_process.spawn, but with improved cross-platform support. The code sample demonstrates how to spawn an 'npm install' process and listen for its exit event.

const spawn = require('cross-spawn');
const child = spawn('npm', ['install']);
child.on('exit', function (code, signal) {
  console.log('Child process exited with code ' + code);
});

Spawning a synchronous child process

This feature allows you to spawn a child process and wait for it to finish synchronously, returning the result. The code sample demonstrates how to synchronously spawn an 'npm install' process and log the exit code.

const spawnSync = require('cross-spawn').sync;
const result = spawnSync('npm', ['install'], { stdio: 'inherit' });
console.log('Child process exited with code ' + result.status);

Handling command-line arguments properly

This feature ensures that command-line arguments are handled properly across different platforms. The code sample demonstrates how to spawn an 'echo' command with arguments and handle the standard output.

const spawn = require('cross-spawn');
const child = spawn('echo', ['Hello World!'], { shell: true });
child.stdout.on('data', function (data) {
  console.log('stdout: ' + data.toString());
});

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Package last updated on 26 May 2016

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