old_contents: /**
   * Defaults
   *
   * A collection of default options.
   */
  var defaults = exports
  
  defaults.filePath = ''
  defaults.imports = {}
  defaults.prefix = ['webkit', 'moz', 'ms', 'o']
  defaults.indent = '\t'
  defaults.precision = 3
new_contents: /**
   * Defaults
   *
   * A collection of default options.
   */
  var defaults = module.exports = {
  	filePath: '',
  	imports: {},
  	prefix: ['webkit', 'moz', 'ms', 'o'],
  	indent: '\t',
  	precision: 3
  }
subject: Refactor defaults.js