spawned

Smart wrapper around child_process.spawn using promises.

Usage

var spawned = require('spawned');
spawned('echo', ['test'])
  .then(function(proc) {
    console.log("Did it work? " + ((proc.out.match(/test/))? "yes" : "no"));
  })
  .catch(function(err) {
    console.log("Boooooom");
    console.error(err.err);
  });

API

spawn(command, [args], [options])

Spawn a new process and returns a promise.

• command: String the command to execute
• args: Array a list of arguments to pass to the command
• options: Object inherits the options from child_process.spawn plus these:
  • out: A WriteableStream receiving the stdout data
  • err: A WriteableStream receiving the stderr data

Returns a promise which:

• when fullfilled resolves to an object like:
  • err: String containing stderr
  • out: String containig stdout
  • combined: String containing the intermingled contents of stdout and stderr
  • code: Number the return code of the program
• when rejected resolves to an Error having the same properties as above.