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@expo/spawn-async

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@expo/spawn-async

A Promise-based interface into processes created by child_process.spawn

  • 1.7.2
  • latest
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  • npm
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929K
decreased by-28.19%
Maintainers
21
Weekly downloads
 
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What is @expo/spawn-async?

The @expo/spawn-async npm package is a utility for spawning child processes asynchronously in Node.js. It is designed to make it easier to work with child processes by providing a promise-based API. This allows developers to use async/await syntax for cleaner and more readable code when dealing with processes that need to be executed outside of the main Node.js process.

What are @expo/spawn-async's main functionalities?

Executing shell commands

This feature allows you to execute shell commands asynchronously. The code sample demonstrates how to use @expo/spawn-async to run the 'echo' command with 'hello world' as an argument. The output of the command is then logged to the console.

const spawnAsync = require('@expo/spawn-async');

async function runCommand() {
  try {
    const result = await spawnAsync('echo', ['hello world']);
    console.log(result.stdout); // Output: hello world
  } catch (error) {
    console.error(error.stderr);
  }
}

runCommand();

Handling errors

This feature demonstrates error handling when executing commands that might fail or do not exist. The code sample attempts to run a non-existent command, which results in an error being caught and logged.

const spawnAsync = require('@expo/spawn-async');

async function runCommand() {
  try {
    await spawnAsync('some-nonexistent-command');
  } catch (error) {
    console.error('Failed to execute command:', error.stderr);
  }
}

runCommand();

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Package last updated on 17 Mar 2023

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