content: // var commented = require('not')
  var fs = require('fs');
  let File = require('vinyl');
  const Rx = require('Rx');
  import React from 'react';
  
  import {Cat, Dog} from 'animals';
  
  // TODO support this kind of import ( require('module').variableName  )
  // it's currently not supported
  var extname = require('path').extname;
  