text: module.exports = DummyStream;
  
  var W = require('_stream_writable');
  var util = require('util');
  util.inherits(DummyStream, W);
  
  function DummyStream() {
    W.apply(this, arguments);
    this.buffer = [];
    this.written = 0;
  }
  
  DummyStream.prototype._write = function(chunk, encoding, cb) {
      this.buffer.push(chunk.toString());
      this.written += chunk.length;
      cb();
  };
  