setup.js

var exec = require('child_process').exec;
var sysPath = require('path');

var mode = process.argv[2];

var execute = function(pathParts, params, callback) {
  if (callback == null) callback = function() {};
  var path = sysPath.join.apply(null, pathParts);
  var command = 'node ' + path + ' ' + params;
  console.log('Executing', command);
  exec(command, function(error, stdout, stderr) {
    if (error != null) return process.stderr.write('Error', stderr.toString());
    process.stdout.write(stdout.toString());
  });
};

if (mode === 'postinstall') {
  execute(['node_modules', 'coffee-script', 'bin', 'coffee'], '-o lib/ src/');
} else if (mode === 'test') {
  execute(['node_modules', 'mocha', 'bin', 'mocha'],
    '--require test/common.js --colors');
}