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Dir : ~/var/www/invoice/node_modules/duplexer2/

Edit File: index.js

"use strict";

var stream = require("readable-stream");

function DuplexWrapper(options, writable, readable) {
  if (typeof readable === "undefined") {
    readable = writable;
    writable = options;
    options = null;
  }

stream.Duplex.call(this, options);

if (typeof readable.read !== "function") {
    readable = (new stream.Readable(options)).wrap(readable);
  }

this._writable = writable;
  this._readable = readable;
  this._waiting = false;

var self = this;

writable.once("finish", function() {
    self.end();
  });

this.once("finish", function() {
    writable.end();
  });

readable.on("readable", function() {
    if (self._waiting) {
      self._waiting = false;
      self._read();
    }
  });

readable.once("end", function() {
    self.push(null);
  });

if (!options || typeof options.bubbleErrors === "undefined" || options.bubbleErrors) {
    writable.on("error", function(err) {
      self.emit("error", err);
    });

readable.on("error", function(err) {
      self.emit("error", err);
    });
  }
}

DuplexWrapper.prototype = Object.create(stream.Duplex.prototype, {constructor: {value: DuplexWrapper}});

DuplexWrapper.prototype._write = function _write(input, encoding, done) {
  this._writable.write(input, encoding, done);
};

DuplexWrapper.prototype._read = function _read() {
  var buf;
  var reads = 0;
  while ((buf = this._readable.read()) !== null) {
    this.push(buf);
    reads++;
  }
  if (reads === 0) {
    this._waiting = true;
  }
};

module.exports = function duplex2(options, writable, readable) {
  return new DuplexWrapper(options, writable, readable);
};

module.exports.DuplexWrapper = DuplexWrapper;