capture-spawn

Asynchronously capturing spawn output.

Install

npm i capture-spawn --save

Usage

For more use-cases see the tests

const captureSpawn = require('capture-spawn')

captureSpawn

Capture output of asynchronous spawn.

Params

• cp {Stream}: Child process spawn stream.
• callback {Function}: Gets error, result or result buffer - cb(err, res, buf).
• returns {Stream}: Passed cp stream.

Example

var captureSpawn = require('capture-spawn')
var spawn = require('cross-spawn-async')

var cp = spawn('echo', ['hello charlike', 'world'])
var stream = captureSpawn(cp, function callback (err, res, buf) {
  if (err) return console.error(err)
  console.log('result', res) // => 'hello charlike world\n'
  console.log('buffer', buf) // => <Buffer ...>
  console.log('result === buffer.toString()', buf.toString()) // => 'hello charlike world\n'
})
console.log(cp === stream) // => true

Error handling

Where buffer is the stderr output and code can be string or number.

var proc = spawn('node', ['not-exist', 'something'])
captureSpawn(proc, console.log)
// => SpawnError {
//   name: 'SpawnError',
//   message: '',
//   code: 1,
//   buffer: <Buffer 6d 6f 64 75 ...>
// }

Related

• capture-stream: Capture stream output. | homepage
• cross-spawn: Cross platform child_process#spawn and child_process#spawnSync | homepage
• cross-spawn-async: Cross platform child_process#spawn | homepage
• function-arguments: Get arguments of a function, useful for and used in dependency injectors.… more | homepage
• gitclone-defaults: Powerful and flexible signature for gitclone - defaults, checks, validating, etc. | homepage
• parse-git-config: Parse .git/config into a JavaScript object. sync or async. | homepage
• parse-git-log: Parse default git log style to array of objects from git repository… more | homepage
• run-commands: Cross-platform run series of commands or in parallel flow. Run commands in… more | homepage
• spawn-commands: Launches a new process with the given command, with command line arguments… more | homepage

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.
But before doing anything, please read the CONTRIBUTING.md guidelines.

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