gistfile1.txt

var assert = require('assert');
var exec   = require('child_process').execFileSync;

// execFileSync throw an error if it returns a non-zero exit status
assert(exec('./index.js'));

/*
  For the above to work index.js needs:
  1. to be executable (i.e. 0755)
  2. it's first line to contain `#!/usr/bin/env node`
  
  Otherwise, you would want something like:
  
  assert(exec('/usr/bin/node', ['./index.js']));
*/