From db645b6b5c9abf7cb5daf1223a52bca29cd88270 Mon Sep 17 00:00:00 2001
From: Paolo Sanchi <paolo.sanchi@gmail.com>
Date: Thu, 20 Jul 2023 16:31:14 +0200
Subject: [PATCH] - updated selenium so it works with latest versions of nodejs

- updated pouchdb to 8.0.1
- dropped pouchdb-promise, replaced by native Promises
- dropped pouchdb-memory, replaced by pouchdb-adapter-memory
- fixed http tests to reflect CouchdDb's recent lastSeq behavior
---
 .jshintrc                              |    3 +-
 dist/pouchdb.replication-stream.js     | 1865 ++++++++++--------------
 dist/pouchdb.replication-stream.min.js |    8 +-
 lib/pouch-utils.js                     |    2 -
 lib/writable-stream.js                 |    1 -
 package.json                           |    6 +-
 test/test.js                           |   24 +-
 7 files changed, 828 insertions(+), 1081 deletions(-)

diff --git a/.jshintrc b/.jshintrc
index 8b98e1a..cd3ed09 100755
--- a/.jshintrc
+++ b/.jshintrc
@@ -26,5 +26,6 @@
     "afterEach",
     "it",
     "emit"
-  ]
+  ],
+  "esnext": true
 }
\ No newline at end of file
diff --git a/dist/pouchdb.replication-stream.js b/dist/pouchdb.replication-stream.js
index f239493..85a0bd9 100644
--- a/dist/pouchdb.replication-stream.js
+++ b/dist/pouchdb.replication-stream.js
@@ -2,8 +2,6 @@
 (function (process){
 'use strict';
 
-var Promise = _dereq_(33);
-
 /* istanbul ignore next */
 exports.once = function (fun) {
   var called = false;
@@ -76,14 +74,14 @@ exports.toPromise = function (func) {
   });
 };
 
-exports.inherits = _dereq_(13);
+exports.inherits = _dereq_(12);
 
-}).call(this,_dereq_(35))
-},{"13":13,"33":33,"35":35}],2:[function(_dereq_,module,exports){
+}).call(this,_dereq_(30))
+},{"12":12,"30":30}],2:[function(_dereq_,module,exports){
 (function (Buffer){
 'use strict';
 
-var through = _dereq_(53).obj;
+var through = _dereq_(50).obj;
 
 module.exports = function () {
   return through(function (chunk, _, next) {
@@ -97,24 +95,23 @@ module.exports = function () {
   });
 };
 
-}).call(this,_dereq_(8).Buffer)
-},{"53":53,"8":8}],3:[function(_dereq_,module,exports){
+}).call(this,_dereq_(7).Buffer)
+},{"50":50,"7":7}],3:[function(_dereq_,module,exports){
 'use strict';
 
-module.exports = _dereq_(59).version;
+module.exports = _dereq_(56).version;
 
-},{"59":59}],4:[function(_dereq_,module,exports){
+},{"56":56}],4:[function(_dereq_,module,exports){
 (function (process){
 'use strict';
 
 var utils = _dereq_(1);
-var Promise = _dereq_(33);
 var ERROR_REV_CONFLICT = {
   status: 409,
   name: 'conflict',
   message: 'Document update conflict'
 };
-var ndj = _dereq_(19);
+var ndj = _dereq_(17);
 var ERROR_MISSING_DOC = {
   status: 404,
   name: 'not_found',
@@ -135,7 +132,8 @@ function WritableStreamPouch(opts, callback) {
 
   /* istanbul ignore next */
   api.type = function () {
-    return 'writableStream';
+    // see https://github.com/pouchdb/pouchdb/issues/6106
+    return 'http';
   };
 
   api._remote = false;
@@ -269,8 +267,8 @@ WritableStreamPouch.valid = function () {
 
 module.exports = WritableStreamPouch;
 
-}).call(this,_dereq_(35))
-},{"1":1,"19":19,"33":33,"35":35}],5:[function(_dereq_,module,exports){
+}).call(this,_dereq_(30))
+},{"1":1,"17":17,"30":30}],5:[function(_dereq_,module,exports){
 var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
 
 ;(function (exports) {
@@ -399,234 +397,11 @@ var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
 },{}],6:[function(_dereq_,module,exports){
 
 },{}],7:[function(_dereq_,module,exports){
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-var Buffer = _dereq_(8).Buffer;
-
-var isBufferEncoding = Buffer.isEncoding
-  || function(encoding) {
-       switch (encoding && encoding.toLowerCase()) {
-         case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;
-         default: return false;
-       }
-     }
-
-
-function assertEncoding(encoding) {
-  if (encoding && !isBufferEncoding(encoding)) {
-    throw new Error('Unknown encoding: ' + encoding);
-  }
-}
-
-// StringDecoder provides an interface for efficiently splitting a series of
-// buffers into a series of JS strings without breaking apart multi-byte
-// characters. CESU-8 is handled as part of the UTF-8 encoding.
-//
-// @TODO Handling all encodings inside a single object makes it very difficult
-// to reason about this code, so it should be split up in the future.
-// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
-// points as used by CESU-8.
-var StringDecoder = exports.StringDecoder = function(encoding) {
-  this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
-  assertEncoding(encoding);
-  switch (this.encoding) {
-    case 'utf8':
-      // CESU-8 represents each of Surrogate Pair by 3-bytes
-      this.surrogateSize = 3;
-      break;
-    case 'ucs2':
-    case 'utf16le':
-      // UTF-16 represents each of Surrogate Pair by 2-bytes
-      this.surrogateSize = 2;
-      this.detectIncompleteChar = utf16DetectIncompleteChar;
-      break;
-    case 'base64':
-      // Base-64 stores 3 bytes in 4 chars, and pads the remainder.
-      this.surrogateSize = 3;
-      this.detectIncompleteChar = base64DetectIncompleteChar;
-      break;
-    default:
-      this.write = passThroughWrite;
-      return;
-  }
-
-  // Enough space to store all bytes of a single character. UTF-8 needs 4
-  // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
-  this.charBuffer = new Buffer(6);
-  // Number of bytes received for the current incomplete multi-byte character.
-  this.charReceived = 0;
-  // Number of bytes expected for the current incomplete multi-byte character.
-  this.charLength = 0;
-};
-
-
-// write decodes the given buffer and returns it as JS string that is
-// guaranteed to not contain any partial multi-byte characters. Any partial
-// character found at the end of the buffer is buffered up, and will be
-// returned when calling write again with the remaining bytes.
-//
-// Note: Converting a Buffer containing an orphan surrogate to a String
-// currently works, but converting a String to a Buffer (via `new Buffer`, or
-// Buffer#write) will replace incomplete surrogates with the unicode
-// replacement character. See https://codereview.chromium.org/121173009/ .
-StringDecoder.prototype.write = function(buffer) {
-  var charStr = '';
-  // if our last write ended with an incomplete multibyte character
-  while (this.charLength) {
-    // determine how many remaining bytes this buffer has to offer for this char
-    var available = (buffer.length >= this.charLength - this.charReceived) ?
-        this.charLength - this.charReceived :
-        buffer.length;
-
-    // add the new bytes to the char buffer
-    buffer.copy(this.charBuffer, this.charReceived, 0, available);
-    this.charReceived += available;
-
-    if (this.charReceived < this.charLength) {
-      // still not enough chars in this buffer? wait for more ...
-      return '';
-    }
-
-    // remove bytes belonging to the current character from the buffer
-    buffer = buffer.slice(available, buffer.length);
-
-    // get the character that was split
-    charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);
-
-    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
-    var charCode = charStr.charCodeAt(charStr.length - 1);
-    if (charCode >= 0xD800 && charCode <= 0xDBFF) {
-      this.charLength += this.surrogateSize;
-      charStr = '';
-      continue;
-    }
-    this.charReceived = this.charLength = 0;
-
-    // if there are no more bytes in this buffer, just emit our char
-    if (buffer.length === 0) {
-      return charStr;
-    }
-    break;
-  }
-
-  // determine and set charLength / charReceived
-  this.detectIncompleteChar(buffer);
-
-  var end = buffer.length;
-  if (this.charLength) {
-    // buffer the incomplete character bytes we got
-    buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
-    end -= this.charReceived;
-  }
-
-  charStr += buffer.toString(this.encoding, 0, end);
-
-  var end = charStr.length - 1;
-  var charCode = charStr.charCodeAt(end);
-  // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
-  if (charCode >= 0xD800 && charCode <= 0xDBFF) {
-    var size = this.surrogateSize;
-    this.charLength += size;
-    this.charReceived += size;
-    this.charBuffer.copy(this.charBuffer, size, 0, size);
-    buffer.copy(this.charBuffer, 0, 0, size);
-    return charStr.substring(0, end);
-  }
-
-  // or just emit the charStr
-  return charStr;
-};
-
-// detectIncompleteChar determines if there is an incomplete UTF-8 character at
-// the end of the given buffer. If so, it sets this.charLength to the byte
-// length that character, and sets this.charReceived to the number of bytes
-// that are available for this character.
-StringDecoder.prototype.detectIncompleteChar = function(buffer) {
-  // determine how many bytes we have to check at the end of this buffer
-  var i = (buffer.length >= 3) ? 3 : buffer.length;
-
-  // Figure out if one of the last i bytes of our buffer announces an
-  // incomplete char.
-  for (; i > 0; i--) {
-    var c = buffer[buffer.length - i];
-
-    // See http://en.wikipedia.org/wiki/UTF-8#Description
-
-    // 110XXXXX
-    if (i == 1 && c >> 5 == 0x06) {
-      this.charLength = 2;
-      break;
-    }
-
-    // 1110XXXX
-    if (i <= 2 && c >> 4 == 0x0E) {
-      this.charLength = 3;
-      break;
-    }
-
-    // 11110XXX
-    if (i <= 3 && c >> 3 == 0x1E) {
-      this.charLength = 4;
-      break;
-    }
-  }
-  this.charReceived = i;
-};
-
-StringDecoder.prototype.end = function(buffer) {
-  var res = '';
-  if (buffer && buffer.length)
-    res = this.write(buffer);
-
-  if (this.charReceived) {
-    var cr = this.charReceived;
-    var buf = this.charBuffer;
-    var enc = this.encoding;
-    res += buf.slice(0, cr).toString(enc);
-  }
-
-  return res;
-};
-
-function passThroughWrite(buffer) {
-  return buffer.toString(this.encoding);
-}
-
-function utf16DetectIncompleteChar(buffer) {
-  this.charReceived = buffer.length % 2;
-  this.charLength = this.charReceived ? 2 : 0;
-}
-
-function base64DetectIncompleteChar(buffer) {
-  this.charReceived = buffer.length % 3;
-  this.charLength = this.charReceived ? 3 : 0;
-}
-
-},{"8":8}],8:[function(_dereq_,module,exports){
 (function (global){
 /*!
  * The buffer module from node.js, for the browser.
  *
- * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ * @author   Feross Aboukhadijeh <http://feross.org>
  * @license  MIT
  */
 /* eslint-disable no-proto */
@@ -635,7 +410,7 @@ function base64DetectIncompleteChar(buffer) {
 
 var base64 = _dereq_(5)
 var ieee754 = _dereq_(11)
-var isArray = _dereq_(15)
+var isArray = _dereq_(8)
 
 exports.Buffer = Buffer
 exports.SlowBuffer = SlowBuffer
@@ -2173,8 +1948,14 @@ function blitBuffer (src, dst, offset, length) {
 }
 
 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"11":11,"15":15,"5":5}],9:[function(_dereq_,module,exports){
-(function (Buffer){
+},{"11":11,"5":5,"8":8}],8:[function(_dereq_,module,exports){
+var toString = {}.toString;
+
+module.exports = Array.isArray || function (arr) {
+  return toString.call(arr) == '[object Array]';
+};
+
+},{}],9:[function(_dereq_,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -2277,14 +2058,13 @@ function isPrimitive(arg) {
 }
 exports.isPrimitive = isPrimitive;
 
-exports.isBuffer = Buffer.isBuffer;
+exports.isBuffer = _dereq_(7).Buffer.isBuffer;
 
 function objectToString(o) {
   return Object.prototype.toString.call(o);
 }
 
-}).call(this,{"isBuffer":_dereq_(14)})
-},{"14":14}],10:[function(_dereq_,module,exports){
+},{"7":7}],10:[function(_dereq_,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -2588,6 +2368,7 @@ function isUndefined(arg) {
 }
 
 },{}],11:[function(_dereq_,module,exports){
+/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */
 exports.read = function (buffer, offset, isLE, mLen, nBytes) {
   var e, m
   var eLen = (nBytes * 8) - mLen - 1
@@ -2674,104 +2455,35 @@ exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
 }
 
 },{}],12:[function(_dereq_,module,exports){
-(function (global){
-'use strict';
-var Mutation = global.MutationObserver || global.WebKitMutationObserver;
-
-var scheduleDrain;
-
-{
-  if (Mutation) {
-    var called = 0;
-    var observer = new Mutation(nextTick);
-    var element = global.document.createTextNode('');
-    observer.observe(element, {
-      characterData: true
-    });
-    scheduleDrain = function () {
-      element.data = (called = ++called % 2);
-    };
-  } else if (!global.setImmediate && typeof global.MessageChannel !== 'undefined') {
-    var channel = new global.MessageChannel();
-    channel.port1.onmessage = nextTick;
-    scheduleDrain = function () {
-      channel.port2.postMessage(0);
-    };
-  } else if ('document' in global && 'onreadystatechange' in global.document.createElement('script')) {
-    scheduleDrain = function () {
-
-      // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted
-      // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.
-      var scriptEl = global.document.createElement('script');
-      scriptEl.onreadystatechange = function () {
-        nextTick();
-
-        scriptEl.onreadystatechange = null;
-        scriptEl.parentNode.removeChild(scriptEl);
-        scriptEl = null;
-      };
-      global.document.documentElement.appendChild(scriptEl);
-    };
-  } else {
-    scheduleDrain = function () {
-      setTimeout(nextTick, 0);
-    };
-  }
-}
-
-var draining;
-var queue = [];
-//named nextTick for less confusing stack traces
-function nextTick() {
-  draining = true;
-  var i, oldQueue;
-  var len = queue.length;
-  while (len) {
-    oldQueue = queue;
-    queue = [];
-    i = -1;
-    while (++i < len) {
-      oldQueue[i]();
+if (typeof Object.create === 'function') {
+  // implementation from standard node.js 'util' module
+  module.exports = function inherits(ctor, superCtor) {
+    if (superCtor) {
+      ctor.super_ = superCtor
+      ctor.prototype = Object.create(superCtor.prototype, {
+        constructor: {
+          value: ctor,
+          enumerable: false,
+          writable: true,
+          configurable: true
+        }
+      })
+    }
+  };
+} else {
+  // old school shim for old browsers
+  module.exports = function inherits(ctor, superCtor) {
+    if (superCtor) {
+      ctor.super_ = superCtor
+      var TempCtor = function () {}
+      TempCtor.prototype = superCtor.prototype
+      ctor.prototype = new TempCtor()
+      ctor.prototype.constructor = ctor
     }
-    len = queue.length;
   }
-  draining = false;
 }
 
-module.exports = immediate;
-function immediate(task) {
-  if (queue.push(task) === 1 && !draining) {
-    scheduleDrain();
-  }
-}
-
-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{}],13:[function(_dereq_,module,exports){
-if (typeof Object.create === 'function') {
-  // implementation from standard node.js 'util' module
-  module.exports = function inherits(ctor, superCtor) {
-    ctor.super_ = superCtor
-    ctor.prototype = Object.create(superCtor.prototype, {
-      constructor: {
-        value: ctor,
-        enumerable: false,
-        writable: true,
-        configurable: true
-      }
-    });
-  };
-} else {
-  // old school shim for old browsers
-  module.exports = function inherits(ctor, superCtor) {
-    ctor.super_ = superCtor
-    var TempCtor = function () {}
-    TempCtor.prototype = superCtor.prototype
-    ctor.prototype = new TempCtor()
-    ctor.prototype.constructor = ctor
-  }
-}
-
-},{}],14:[function(_dereq_,module,exports){
 /*!
  * Determine if an object is a Buffer
  *
@@ -2794,14 +2506,12 @@ function isSlowBuffer (obj) {
   return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
 }
 
-},{}],15:[function(_dereq_,module,exports){
-var toString = {}.toString;
-
+},{}],14:[function(_dereq_,module,exports){
 module.exports = Array.isArray || function (arr) {
-  return toString.call(arr) == '[object Array]';
+  return Object.prototype.toString.call(arr) == '[object Array]';
 };
 
-},{}],16:[function(_dereq_,module,exports){
+},{}],15:[function(_dereq_,module,exports){
 exports = module.exports = stringify
 exports.getSerialize = serializer
 
@@ -2830,262 +2540,7 @@ function serializer(replacer, cycleReplacer) {
   }
 }
 
-},{}],17:[function(_dereq_,module,exports){
-'use strict';
-var immediate = _dereq_(12);
-
-/* istanbul ignore next */
-function INTERNAL() {}
-
-var handlers = {};
-
-var REJECTED = ['REJECTED'];
-var FULFILLED = ['FULFILLED'];
-var PENDING = ['PENDING'];
-
-module.exports = Promise;
-
-function Promise(resolver) {
-  if (typeof resolver !== 'function') {
-    throw new TypeError('resolver must be a function');
-  }
-  this.state = PENDING;
-  this.queue = [];
-  this.outcome = void 0;
-  if (resolver !== INTERNAL) {
-    safelyResolveThenable(this, resolver);
-  }
-}
-
-Promise.prototype["catch"] = function (onRejected) {
-  return this.then(null, onRejected);
-};
-Promise.prototype.then = function (onFulfilled, onRejected) {
-  if (typeof onFulfilled !== 'function' && this.state === FULFILLED ||
-    typeof onRejected !== 'function' && this.state === REJECTED) {
-    return this;
-  }
-  var promise = new this.constructor(INTERNAL);
-  if (this.state !== PENDING) {
-    var resolver = this.state === FULFILLED ? onFulfilled : onRejected;
-    unwrap(promise, resolver, this.outcome);
-  } else {
-    this.queue.push(new QueueItem(promise, onFulfilled, onRejected));
-  }
-
-  return promise;
-};
-function QueueItem(promise, onFulfilled, onRejected) {
-  this.promise = promise;
-  if (typeof onFulfilled === 'function') {
-    this.onFulfilled = onFulfilled;
-    this.callFulfilled = this.otherCallFulfilled;
-  }
-  if (typeof onRejected === 'function') {
-    this.onRejected = onRejected;
-    this.callRejected = this.otherCallRejected;
-  }
-}
-QueueItem.prototype.callFulfilled = function (value) {
-  handlers.resolve(this.promise, value);
-};
-QueueItem.prototype.otherCallFulfilled = function (value) {
-  unwrap(this.promise, this.onFulfilled, value);
-};
-QueueItem.prototype.callRejected = function (value) {
-  handlers.reject(this.promise, value);
-};
-QueueItem.prototype.otherCallRejected = function (value) {
-  unwrap(this.promise, this.onRejected, value);
-};
-
-function unwrap(promise, func, value) {
-  immediate(function () {
-    var returnValue;
-    try {
-      returnValue = func(value);
-    } catch (e) {
-      return handlers.reject(promise, e);
-    }
-    if (returnValue === promise) {
-      handlers.reject(promise, new TypeError('Cannot resolve promise with itself'));
-    } else {
-      handlers.resolve(promise, returnValue);
-    }
-  });
-}
-
-handlers.resolve = function (self, value) {
-  var result = tryCatch(getThen, value);
-  if (result.status === 'error') {
-    return handlers.reject(self, result.value);
-  }
-  var thenable = result.value;
-
-  if (thenable) {
-    safelyResolveThenable(self, thenable);
-  } else {
-    self.state = FULFILLED;
-    self.outcome = value;
-    var i = -1;
-    var len = self.queue.length;
-    while (++i < len) {
-      self.queue[i].callFulfilled(value);
-    }
-  }
-  return self;
-};
-handlers.reject = function (self, error) {
-  self.state = REJECTED;
-  self.outcome = error;
-  var i = -1;
-  var len = self.queue.length;
-  while (++i < len) {
-    self.queue[i].callRejected(error);
-  }
-  return self;
-};
-
-function getThen(obj) {
-  // Make sure we only access the accessor once as required by the spec
-  var then = obj && obj.then;
-  if (obj && (typeof obj === 'object' || typeof obj === 'function') && typeof then === 'function') {
-    return function appyThen() {
-      then.apply(obj, arguments);
-    };
-  }
-}
-
-function safelyResolveThenable(self, thenable) {
-  // Either fulfill, reject or reject with error
-  var called = false;
-  function onError(value) {
-    if (called) {
-      return;
-    }
-    called = true;
-    handlers.reject(self, value);
-  }
-
-  function onSuccess(value) {
-    if (called) {
-      return;
-    }
-    called = true;
-    handlers.resolve(self, value);
-  }
-
-  function tryToUnwrap() {
-    thenable(onSuccess, onError);
-  }
-
-  var result = tryCatch(tryToUnwrap);
-  if (result.status === 'error') {
-    onError(result.value);
-  }
-}
-
-function tryCatch(func, value) {
-  var out = {};
-  try {
-    out.value = func(value);
-    out.status = 'success';
-  } catch (e) {
-    out.status = 'error';
-    out.value = e;
-  }
-  return out;
-}
-
-Promise.resolve = resolve;
-function resolve(value) {
-  if (value instanceof this) {
-    return value;
-  }
-  return handlers.resolve(new this(INTERNAL), value);
-}
-
-Promise.reject = reject;
-function reject(reason) {
-  var promise = new this(INTERNAL);
-  return handlers.reject(promise, reason);
-}
-
-Promise.all = all;
-function all(iterable) {
-  var self = this;
-  if (Object.prototype.toString.call(iterable) !== '[object Array]') {
-    return this.reject(new TypeError('must be an array'));
-  }
-
-  var len = iterable.length;
-  var called = false;
-  if (!len) {
-    return this.resolve([]);
-  }
-
-  var values = new Array(len);
-  var resolved = 0;
-  var i = -1;
-  var promise = new this(INTERNAL);
-
-  while (++i < len) {
-    allResolver(iterable[i], i);
-  }
-  return promise;
-  function allResolver(value, i) {
-    self.resolve(value).then(resolveFromAll, function (error) {
-      if (!called) {
-        called = true;
-        handlers.reject(promise, error);
-      }
-    });
-    function resolveFromAll(outValue) {
-      values[i] = outValue;
-      if (++resolved === len && !called) {
-        called = true;
-        handlers.resolve(promise, values);
-      }
-    }
-  }
-}
-
-Promise.race = race;
-function race(iterable) {
-  var self = this;
-  if (Object.prototype.toString.call(iterable) !== '[object Array]') {
-    return this.reject(new TypeError('must be an array'));
-  }
-
-  var len = iterable.length;
-  var called = false;
-  if (!len) {
-    return this.resolve([]);
-  }
-
-  var i = -1;
-  var promise = new this(INTERNAL);
-
-  while (++i < len) {
-    resolver(iterable[i]);
-  }
-  return promise;
-  function resolver(value) {
-    self.resolve(value).then(function (response) {
-      if (!called) {
-        called = true;
-        handlers.resolve(promise, response);
-      }
-    }, function (error) {
-      if (!called) {
-        called = true;
-        handlers.reject(promise, error);
-      }
-    });
-  }
-}
-
-},{"12":12}],18:[function(_dereq_,module,exports){
+},{}],16:[function(_dereq_,module,exports){
 (function (global){
 /**
  * lodash (Custom Build) <https://lodash.com/>
@@ -3592,11 +3047,11 @@ var pick = baseRest(function(object, props) {
 module.exports = pick;
 
 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{}],19:[function(_dereq_,module,exports){
-var through = _dereq_(53)
-var split = _dereq_(50)
-var EOL = _dereq_(20).EOL
-var stringify = _dereq_(16)
+},{}],17:[function(_dereq_,module,exports){
+var through = _dereq_(50)
+var split = _dereq_(47)
+var EOL = _dereq_(18).EOL
+var stringify = _dereq_(15)
 
 module.exports = parse
 module.exports.serialize = module.exports.stringify = serialize
@@ -3625,7 +3080,7 @@ function serialize (opts) {
   })
 }
 
-},{"16":16,"20":20,"50":50,"53":53}],20:[function(_dereq_,module,exports){
+},{"15":15,"18":18,"47":47,"50":50}],18:[function(_dereq_,module,exports){
 exports.endianness = function () { return 'LE' };
 
 exports.hostname = function () {
@@ -3672,7 +3127,7 @@ exports.tmpdir = exports.tmpDir = function () {
 
 exports.EOL = '\n';
 
-},{}],21:[function(_dereq_,module,exports){
+},{}],19:[function(_dereq_,module,exports){
 'use strict';
 module.exports = function (source, target, events) {
   source.on('newListener', function (event, listener) {
@@ -3687,10 +3142,10 @@ module.exports = function (source, target, events) {
   });
 };
 
-},{}],22:[function(_dereq_,module,exports){
+},{}],20:[function(_dereq_,module,exports){
 'use strict';
-var Writable = _dereq_(32);
-var Readable = _dereq_(31);
+var Writable = _dereq_(28);
+var Readable = _dereq_(27);
 
 exports.createReadStream = function (opts) {
   opts = opts || {};
@@ -3700,7 +3155,7 @@ exports.createWriteStream = function (opts) {
   opts = opts || {};
   return new Writable(this, opts);
 };
-var ep = _dereq_(21);
+var ep = _dereq_(19);
 var streamEvents = [
   'drain',
   'pipe',
@@ -3721,12 +3176,7 @@ exports.end = function () {
   this.emit('done');
 };
 
-},{"21":21,"31":31,"32":32}],23:[function(_dereq_,module,exports){
-module.exports = Array.isArray || function (arr) {
-  return Object.prototype.toString.call(arr) == '[object Array]';
-};
-
-},{}],24:[function(_dereq_,module,exports){
+},{"19":19,"27":27,"28":28}],21:[function(_dereq_,module,exports){
 (function (process){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -3767,11 +3217,11 @@ var objectKeys = Object.keys || function (obj) {
 
 /*<replacement>*/
 var util = _dereq_(9);
-util.inherits = _dereq_(13);
+util.inherits = _dereq_(12);
 /*</replacement>*/
 
-var Readable = _dereq_(26);
-var Writable = _dereq_(28);
+var Readable = _dereq_(23);
+var Writable = _dereq_(25);
 
 util.inherits(Duplex, Readable);
 
@@ -3818,8 +3268,8 @@ function forEach (xs, f) {
   }
 }
 
-}).call(this,_dereq_(35))
-},{"13":13,"26":26,"28":28,"35":35,"9":9}],25:[function(_dereq_,module,exports){
+}).call(this,_dereq_(30))
+},{"12":12,"23":23,"25":25,"30":30,"9":9}],22:[function(_dereq_,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -3847,11 +3297,11 @@ function forEach (xs, f) {
 
 module.exports = PassThrough;
 
-var Transform = _dereq_(27);
+var Transform = _dereq_(24);
 
 /*<replacement>*/
 var util = _dereq_(9);
-util.inherits = _dereq_(13);
+util.inherits = _dereq_(12);
 /*</replacement>*/
 
 util.inherits(PassThrough, Transform);
@@ -3867,7 +3317,7 @@ PassThrough.prototype._transform = function(chunk, encoding, cb) {
   cb(null, chunk);
 };
 
-},{"13":13,"27":27,"9":9}],26:[function(_dereq_,module,exports){
+},{"12":12,"24":24,"9":9}],23:[function(_dereq_,module,exports){
 (function (process){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -3893,12 +3343,12 @@ PassThrough.prototype._transform = function(chunk, encoding, cb) {
 module.exports = Readable;
 
 /*<replacement>*/
-var isArray = _dereq_(23);
+var isArray = _dereq_(14);
 /*</replacement>*/
 
 
 /*<replacement>*/
-var Buffer = _dereq_(8).Buffer;
+var Buffer = _dereq_(7).Buffer;
 /*</replacement>*/
 
 Readable.ReadableState = ReadableState;
@@ -3911,11 +3361,11 @@ if (!EE.listenerCount) EE.listenerCount = function(emitter, type) {
 };
 /*</replacement>*/
 
-var Stream = _dereq_(51);
+var Stream = _dereq_(48);
 
 /*<replacement>*/
 var util = _dereq_(9);
-util.inherits = _dereq_(13);
+util.inherits = _dereq_(12);
 /*</replacement>*/
 
 var StringDecoder;
@@ -3934,7 +3384,7 @@ if (debug && debug.debuglog) {
 util.inherits(Readable, Stream);
 
 function ReadableState(options, stream) {
-  var Duplex = _dereq_(24);
+  var Duplex = _dereq_(21);
 
   options = options || {};
 
@@ -3995,14 +3445,14 @@ function ReadableState(options, stream) {
   this.encoding = null;
   if (options.encoding) {
     if (!StringDecoder)
-      StringDecoder = _dereq_(30).StringDecoder;
+      StringDecoder = _dereq_(49).StringDecoder;
     this.decoder = new StringDecoder(options.encoding);
     this.encoding = options.encoding;
   }
 }
 
 function Readable(options) {
-  var Duplex = _dereq_(24);
+  var Duplex = _dereq_(21);
 
   if (!(this instanceof Readable))
     return new Readable(options);
@@ -4105,7 +3555,7 @@ function needMoreData(state) {
 // backwards compatibility.
 Readable.prototype.setEncoding = function(enc) {
   if (!StringDecoder)
-    StringDecoder = _dereq_(30).StringDecoder;
+    StringDecoder = _dereq_(49).StringDecoder;
   this._readableState.decoder = new StringDecoder(enc);
   this._readableState.encoding = enc;
   return this;
@@ -4821,8 +4271,8 @@ function indexOf (xs, x) {
   return -1;
 }
 
-}).call(this,_dereq_(35))
-},{"10":10,"13":13,"23":23,"24":24,"30":30,"35":35,"51":51,"6":6,"8":8,"9":9}],27:[function(_dereq_,module,exports){
+}).call(this,_dereq_(30))
+},{"10":10,"12":12,"14":14,"21":21,"30":30,"48":48,"49":49,"6":6,"7":7,"9":9}],24:[function(_dereq_,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -4889,11 +4339,11 @@ function indexOf (xs, x) {
 
 module.exports = Transform;
 
-var Duplex = _dereq_(24);
+var Duplex = _dereq_(21);
 
 /*<replacement>*/
 var util = _dereq_(9);
-util.inherits = _dereq_(13);
+util.inherits = _dereq_(12);
 /*</replacement>*/
 
 util.inherits(Transform, Duplex);
@@ -5033,7 +4483,7 @@ function done(stream, er) {
   return stream.push(null);
 }
 
-},{"13":13,"24":24,"9":9}],28:[function(_dereq_,module,exports){
+},{"12":12,"21":21,"9":9}],25:[function(_dereq_,module,exports){
 (function (process){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -5063,7 +4513,7 @@ function done(stream, er) {
 module.exports = Writable;
 
 /*<replacement>*/
-var Buffer = _dereq_(8).Buffer;
+var Buffer = _dereq_(7).Buffer;
 /*</replacement>*/
 
 Writable.WritableState = WritableState;
@@ -5071,10 +4521,10 @@ Writable.WritableState = WritableState;
 
 /*<replacement>*/
 var util = _dereq_(9);
-util.inherits = _dereq_(13);
+util.inherits = _dereq_(12);
 /*</replacement>*/
 
-var Stream = _dereq_(51);
+var Stream = _dereq_(48);
 
 util.inherits(Writable, Stream);
 
@@ -5085,7 +4535,7 @@ function WriteReq(chunk, encoding, cb) {
 }
 
 function WritableState(options, stream) {
-  var Duplex = _dereq_(24);
+  var Duplex = _dereq_(21);
 
   options = options || {};
 
@@ -5173,7 +4623,7 @@ function WritableState(options, stream) {
 }
 
 function Writable(options) {
-  var Duplex = _dereq_(24);
+  var Duplex = _dereq_(21);
 
   // Writable ctor is applied to Duplexes, though they're not
   // instanceof Writable, they're instanceof Readable.
@@ -5513,27 +4963,25 @@ function endWritable(stream, state, cb) {
   state.ended = true;
 }
 
-}).call(this,_dereq_(35))
-},{"13":13,"24":24,"35":35,"51":51,"8":8,"9":9}],29:[function(_dereq_,module,exports){
+}).call(this,_dereq_(30))
+},{"12":12,"21":21,"30":30,"48":48,"7":7,"9":9}],26:[function(_dereq_,module,exports){
 (function (process){
-exports = module.exports = _dereq_(26);
-exports.Stream = _dereq_(51);
+exports = module.exports = _dereq_(23);
+exports.Stream = _dereq_(48);
 exports.Readable = exports;
-exports.Writable = _dereq_(28);
-exports.Duplex = _dereq_(24);
-exports.Transform = _dereq_(27);
-exports.PassThrough = _dereq_(25);
+exports.Writable = _dereq_(25);
+exports.Duplex = _dereq_(21);
+exports.Transform = _dereq_(24);
+exports.PassThrough = _dereq_(22);
 if (!process.browser && process.env.READABLE_STREAM === 'disable') {
-  module.exports = _dereq_(51);
+  module.exports = _dereq_(48);
 }
 
-}).call(this,_dereq_(35))
-},{"24":24,"25":25,"26":26,"27":27,"28":28,"35":35,"51":51}],30:[function(_dereq_,module,exports){
-arguments[4][7][0].apply(exports,arguments)
-},{"7":7,"8":8}],31:[function(_dereq_,module,exports){
+}).call(this,_dereq_(30))
+},{"21":21,"22":22,"23":23,"24":24,"25":25,"30":30,"48":48}],27:[function(_dereq_,module,exports){
 'use strict';
-var inherits = _dereq_(13);
-var Readable = _dereq_(29).Readable;
+var inherits = _dereq_(12);
+var Readable = _dereq_(26).Readable;
 
 module.exports = ReadStream;
 inherits(ReadStream, Readable);
@@ -5585,11 +5033,11 @@ ReadStream.prototype.cancel = function () {
   }
 };
 
-},{"13":13,"29":29}],32:[function(_dereq_,module,exports){
+},{"12":12,"26":26}],28:[function(_dereq_,module,exports){
 (function (Buffer){
 'use strict';
-var inherits = _dereq_(13);
-var Writable = _dereq_(29).Writable;
+var inherits = _dereq_(12);
+var Writable = _dereq_(26).Writable;
 
 module.exports = WriteStream;
 inherits(WriteStream, Writable);
@@ -5631,24 +5079,13 @@ WriteStream.prototype._write = function (chunk, _, next) {
   }
 };
 
-}).call(this,{"isBuffer":_dereq_(14)})
-},{"13":13,"14":14,"29":29}],33:[function(_dereq_,module,exports){
-'use strict';
-
-function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
-
-var lie = _interopDefault(_dereq_(17));
-
-/* istanbul ignore next */
-var PouchPromise = typeof Promise === 'function' ? Promise : lie;
-
-module.exports = PouchPromise;
-
-},{"17":17}],34:[function(_dereq_,module,exports){
+}).call(this,{"isBuffer":_dereq_(13)})
+},{"12":12,"13":13,"26":26}],29:[function(_dereq_,module,exports){
 (function (process){
 'use strict';
 
-if (!process.version ||
+if (typeof process === 'undefined' ||
+    !process.version ||
     process.version.indexOf('v0.') === 0 ||
     process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
   module.exports = { nextTick: nextTick };
@@ -5691,8 +5128,8 @@ function nextTick(fn, arg1, arg2, arg3) {
 }
 
 
-}).call(this,_dereq_(35))
-},{"35":35}],35:[function(_dereq_,module,exports){
+}).call(this,_dereq_(30))
+},{"30":30}],30:[function(_dereq_,module,exports){
 // shim for using process in browser
 var process = module.exports = {};
 
@@ -5878,10 +5315,10 @@ process.chdir = function (dir) {
 };
 process.umask = function() { return 0; };
 
-},{}],36:[function(_dereq_,module,exports){
-module.exports = _dereq_(37);
+},{}],31:[function(_dereq_,module,exports){
+module.exports = _dereq_(32);
 
-},{"37":37}],37:[function(_dereq_,module,exports){
+},{"32":32}],32:[function(_dereq_,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -5912,7 +5349,7 @@ module.exports = _dereq_(37);
 
 /*<replacement>*/
 
-var pna = _dereq_(34);
+var pna = _dereq_(29);
 /*</replacement>*/
 
 /*<replacement>*/
@@ -5927,19 +5364,22 @@ var objectKeys = Object.keys || function (obj) {
 module.exports = Duplex;
 
 /*<replacement>*/
-var util = _dereq_(9);
-util.inherits = _dereq_(13);
+var util = Object.create(_dereq_(9));
+util.inherits = _dereq_(12);
 /*</replacement>*/
 
-var Readable = _dereq_(39);
-var Writable = _dereq_(41);
+var Readable = _dereq_(34);
+var Writable = _dereq_(36);
 
 util.inherits(Duplex, Readable);
 
-var keys = objectKeys(Writable.prototype);
-for (var v = 0; v < keys.length; v++) {
-  var method = keys[v];
-  if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
+{
+  // avoid scope creep, the keys array can then be collected
+  var keys = objectKeys(Writable.prototype);
+  for (var v = 0; v < keys.length; v++) {
+    var method = keys[v];
+    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
+  }
 }
 
 function Duplex(options) {
@@ -5958,6 +5398,16 @@ function Duplex(options) {
   this.once('end', onend);
 }
 
+Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function () {
+    return this._writableState.highWaterMark;
+  }
+});
+
 // the no-half-open enforcer
 function onend() {
   // if we allow half-open state, or if the writable side ended,
@@ -6000,13 +5450,7 @@ Duplex.prototype._destroy = function (err, cb) {
 
   pna.nextTick(cb, err);
 };
-
-function forEach(xs, f) {
-  for (var i = 0, l = xs.length; i < l; i++) {
-    f(xs[i], i);
-  }
-}
-},{"13":13,"34":34,"39":39,"41":41,"9":9}],38:[function(_dereq_,module,exports){
+},{"12":12,"29":29,"34":34,"36":36,"9":9}],33:[function(_dereq_,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -6036,11 +5480,11 @@ function forEach(xs, f) {
 
 module.exports = PassThrough;
 
-var Transform = _dereq_(40);
+var Transform = _dereq_(35);
 
 /*<replacement>*/
-var util = _dereq_(9);
-util.inherits = _dereq_(13);
+var util = Object.create(_dereq_(9));
+util.inherits = _dereq_(12);
 /*</replacement>*/
 
 util.inherits(PassThrough, Transform);
@@ -6054,7 +5498,7 @@ function PassThrough(options) {
 PassThrough.prototype._transform = function (chunk, encoding, cb) {
   cb(null, chunk);
 };
-},{"13":13,"40":40,"9":9}],39:[function(_dereq_,module,exports){
+},{"12":12,"35":35,"9":9}],34:[function(_dereq_,module,exports){
 (function (process,global){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -6081,13 +5525,13 @@ PassThrough.prototype._transform = function (chunk, encoding, cb) {
 
 /*<replacement>*/
 
-var pna = _dereq_(34);
+var pna = _dereq_(29);
 /*</replacement>*/
 
 module.exports = Readable;
 
 /*<replacement>*/
-var isArray = _dereq_(15);
+var isArray = _dereq_(40);
 /*</replacement>*/
 
 /*<replacement>*/
@@ -6105,13 +5549,13 @@ var EElistenerCount = function (emitter, type) {
 /*</replacement>*/
 
 /*<replacement>*/
-var Stream = _dereq_(44);
+var Stream = _dereq_(39);
 /*</replacement>*/
 
 /*<replacement>*/
 
-var Buffer = _dereq_(49).Buffer;
-var OurUint8Array = global.Uint8Array || function () {};
+var Buffer = _dereq_(41).Buffer;
+var OurUint8Array = (typeof global !== 'undefined' ? global : typeof window !== 'undefined' ? window : typeof self !== 'undefined' ? self : {}).Uint8Array || function () {};
 function _uint8ArrayToBuffer(chunk) {
   return Buffer.from(chunk);
 }
@@ -6122,8 +5566,8 @@ function _isUint8Array(obj) {
 /*</replacement>*/
 
 /*<replacement>*/
-var util = _dereq_(9);
-util.inherits = _dereq_(13);
+var util = Object.create(_dereq_(9));
+util.inherits = _dereq_(12);
 /*</replacement>*/
 
 /*<replacement>*/
@@ -6136,8 +5580,8 @@ if (debugUtil && debugUtil.debuglog) {
 }
 /*</replacement>*/
 
-var BufferList = _dereq_(42);
-var destroyImpl = _dereq_(43);
+var BufferList = _dereq_(37);
+var destroyImpl = _dereq_(38);
 var StringDecoder;
 
 util.inherits(Readable, Stream);
@@ -6157,7 +5601,7 @@ function prependListener(emitter, event, fn) {
 }
 
 function ReadableState(options, stream) {
-  Duplex = Duplex || _dereq_(37);
+  Duplex = Duplex || _dereq_(32);
 
   options = options || {};
 
@@ -6227,14 +5671,14 @@ function ReadableState(options, stream) {
   this.decoder = null;
   this.encoding = null;
   if (options.encoding) {
-    if (!StringDecoder) StringDecoder = _dereq_(52).StringDecoder;
+    if (!StringDecoder) StringDecoder = _dereq_(42).StringDecoder;
     this.decoder = new StringDecoder(options.encoding);
     this.encoding = options.encoding;
   }
 }
 
 function Readable(options) {
-  Duplex = Duplex || _dereq_(37);
+  Duplex = Duplex || _dereq_(32);
 
   if (!(this instanceof Readable)) return new Readable(options);
 
@@ -6383,7 +5827,7 @@ Readable.prototype.isPaused = function () {
 
 // backwards compatibility.
 Readable.prototype.setEncoding = function (enc) {
-  if (!StringDecoder) StringDecoder = _dereq_(52).StringDecoder;
+  if (!StringDecoder) StringDecoder = _dereq_(42).StringDecoder;
   this._readableState.decoder = new StringDecoder(enc);
   this._readableState.encoding = enc;
   return this;
@@ -6681,8 +6125,8 @@ Readable.prototype.pipe = function (dest, pipeOpts) {
       // also returned false.
       // => Check whether `dest` is still a piping destination.
       if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
-        debug('false write response, pause', src._readableState.awaitDrain);
-        src._readableState.awaitDrain++;
+        debug('false write response, pause', state.awaitDrain);
+        state.awaitDrain++;
         increasedAwaitDrain = true;
       }
       src.pause();
@@ -6776,7 +6220,7 @@ Readable.prototype.unpipe = function (dest) {
     state.flowing = false;
 
     for (var i = 0; i < len; i++) {
-      dests[i].emit('unpipe', this, unpipeInfo);
+      dests[i].emit('unpipe', this, { hasUnpiped: false });
     }return this;
   }
 
@@ -6934,6 +6378,16 @@ Readable.prototype.wrap = function (stream) {
   return this;
 };
 
+Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function () {
+    return this._readableState.highWaterMark;
+  }
+});
+
 // exposed for testing purposes only.
 Readable._fromList = fromList;
 
@@ -7059,20 +6513,14 @@ function endReadableNT(state, stream) {
   }
 }
 
-function forEach(xs, f) {
-  for (var i = 0, l = xs.length; i < l; i++) {
-    f(xs[i], i);
-  }
-}
-
 function indexOf(xs, x) {
   for (var i = 0, l = xs.length; i < l; i++) {
     if (xs[i] === x) return i;
   }
   return -1;
 }
-}).call(this,_dereq_(35),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"10":10,"13":13,"15":15,"34":34,"35":35,"37":37,"42":42,"43":43,"44":44,"49":49,"52":52,"6":6,"9":9}],40:[function(_dereq_,module,exports){
+}).call(this,_dereq_(30),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"10":10,"12":12,"29":29,"30":30,"32":32,"37":37,"38":38,"39":39,"40":40,"41":41,"42":42,"6":6,"9":9}],35:[function(_dereq_,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -7140,11 +6588,11 @@ function indexOf(xs, x) {
 
 module.exports = Transform;
 
-var Duplex = _dereq_(37);
+var Duplex = _dereq_(32);
 
 /*<replacement>*/
-var util = _dereq_(9);
-util.inherits = _dereq_(13);
+var util = Object.create(_dereq_(9));
+util.inherits = _dereq_(12);
 /*</replacement>*/
 
 util.inherits(Transform, Duplex);
@@ -7287,7 +6735,7 @@ function done(stream, er, data) {
 
   return stream.push(null);
 }
-},{"13":13,"37":37,"9":9}],41:[function(_dereq_,module,exports){
+},{"12":12,"32":32,"9":9}],36:[function(_dereq_,module,exports){
 (function (process,global){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -7318,7 +6766,7 @@ function done(stream, er, data) {
 
 /*<replacement>*/
 
-var pna = _dereq_(34);
+var pna = _dereq_(29);
 /*</replacement>*/
 
 module.exports = Writable;
@@ -7355,24 +6803,24 @@ var Duplex;
 Writable.WritableState = WritableState;
 
 /*<replacement>*/
-var util = _dereq_(9);
-util.inherits = _dereq_(13);
+var util = Object.create(_dereq_(9));
+util.inherits = _dereq_(12);
 /*</replacement>*/
 
 /*<replacement>*/
 var internalUtil = {
-  deprecate: _dereq_(54)
+  deprecate: _dereq_(51)
 };
 /*</replacement>*/
 
 /*<replacement>*/
-var Stream = _dereq_(44);
+var Stream = _dereq_(39);
 /*</replacement>*/
 
 /*<replacement>*/
 
-var Buffer = _dereq_(49).Buffer;
-var OurUint8Array = global.Uint8Array || function () {};
+var Buffer = _dereq_(41).Buffer;
+var OurUint8Array = (typeof global !== 'undefined' ? global : typeof window !== 'undefined' ? window : typeof self !== 'undefined' ? self : {}).Uint8Array || function () {};
 function _uint8ArrayToBuffer(chunk) {
   return Buffer.from(chunk);
 }
@@ -7382,14 +6830,14 @@ function _isUint8Array(obj) {
 
 /*</replacement>*/
 
-var destroyImpl = _dereq_(43);
+var destroyImpl = _dereq_(38);
 
 util.inherits(Writable, Stream);
 
 function nop() {}
 
 function WritableState(options, stream) {
-  Duplex = Duplex || _dereq_(37);
+  Duplex = Duplex || _dereq_(32);
 
   options = options || {};
 
@@ -7539,7 +6987,7 @@ if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.protot
 }
 
 function Writable(options) {
-  Duplex = Duplex || _dereq_(37);
+  Duplex = Duplex || _dereq_(32);
 
   // Writable ctor is applied to Duplexes, too.
   // `realHasInstance` is necessary because using plain `instanceof`
@@ -7640,7 +7088,7 @@ Writable.prototype.uncork = function () {
   if (state.corked) {
     state.corked--;
 
-    if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
+    if (!state.writing && !state.corked && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
   }
 };
 
@@ -7659,6 +7107,16 @@ function decodeChunk(state, chunk, encoding) {
   return chunk;
 }
 
+Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
+  // making it explicit this property is not enumerable
+  // because otherwise some prototype manipulation in
+  // userland will fail
+  enumerable: false,
+  get: function () {
+    return this._writableState.highWaterMark;
+  }
+});
+
 // if we're already writing something, then just put this
 // in the queue, and wait our turn.  Otherwise, call _write
 // If we return false, then we need a drain event, so set that flag.
@@ -7872,7 +7330,7 @@ Writable.prototype.end = function (chunk, encoding, cb) {
   }
 
   // ignore unnecessary end() calls.
-  if (!state.ending && !state.finished) endWritable(this, state, cb);
+  if (!state.ending) endWritable(this, state, cb);
 };
 
 function needFinish(state) {
@@ -7933,11 +7391,9 @@ function onCorkedFinish(corkReq, state, err) {
     cb(err);
     entry = entry.next;
   }
-  if (state.corkedRequestsFree) {
-    state.corkedRequestsFree.next = corkReq;
-  } else {
-    state.corkedRequestsFree = corkReq;
-  }
+
+  // reuse the free corkReq.
+  state.corkedRequestsFree.next = corkReq;
 }
 
 Object.defineProperty(Writable.prototype, 'destroyed', {
@@ -7966,13 +7422,13 @@ Writable.prototype._destroy = function (err, cb) {
   this.end();
   cb(err);
 };
-}).call(this,_dereq_(35),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"13":13,"34":34,"35":35,"37":37,"43":43,"44":44,"49":49,"54":54,"9":9}],42:[function(_dereq_,module,exports){
+}).call(this,_dereq_(30),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"12":12,"29":29,"30":30,"32":32,"38":38,"39":39,"41":41,"51":51,"9":9}],37:[function(_dereq_,module,exports){
 'use strict';
 
 function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
 
-var Buffer = _dereq_(49).Buffer;
+var Buffer = _dereq_(41).Buffer;
 var util = _dereq_(6);
 
 function copyBuffer(src, target, offset) {
@@ -8026,7 +7482,6 @@ module.exports = function () {
 
   BufferList.prototype.concat = function concat(n) {
     if (this.length === 0) return Buffer.alloc(0);
-    if (this.length === 1) return this.head.data;
     var ret = Buffer.allocUnsafe(n >>> 0);
     var p = this.head;
     var i = 0;
@@ -8047,12 +7502,12 @@ if (util && util.inspect && util.inspect.custom) {
     return this.constructor.name + ' ' + obj;
   };
 }
-},{"49":49,"6":6}],43:[function(_dereq_,module,exports){
+},{"41":41,"6":6}],38:[function(_dereq_,module,exports){
 'use strict';
 
 /*<replacement>*/
 
-var pna = _dereq_(34);
+var pna = _dereq_(29);
 /*</replacement>*/
 
 // undocumented cb() API, needed for core, not for public API
@@ -8065,9 +7520,15 @@ function destroy(err, cb) {
   if (readableDestroyed || writableDestroyed) {
     if (cb) {
       cb(err);
-    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
-      pna.nextTick(emitErrorNT, this, err);
+    } else if (err) {
+      if (!this._writableState) {
+        pna.nextTick(emitErrorNT, this, err);
+      } else if (!this._writableState.errorEmitted) {
+        this._writableState.errorEmitted = true;
+        pna.nextTick(emitErrorNT, this, err);
+      }
     }
+
     return this;
   }
 
@@ -8085,9 +7546,11 @@ function destroy(err, cb) {
 
   this._destroy(err || null, function (err) {
     if (!cb && err) {
-      pna.nextTick(emitErrorNT, _this, err);
-      if (_this._writableState) {
+      if (!_this._writableState) {
+        pna.nextTick(emitErrorNT, _this, err);
+      } else if (!_this._writableState.errorEmitted) {
         _this._writableState.errorEmitted = true;
+        pna.nextTick(emitErrorNT, _this, err);
       }
     } else if (cb) {
       cb(err);
@@ -8109,6 +7572,8 @@ function undestroy() {
     this._writableState.destroyed = false;
     this._writableState.ended = false;
     this._writableState.ending = false;
+    this._writableState.finalCalled = false;
+    this._writableState.prefinished = false;
     this._writableState.finished = false;
     this._writableState.errorEmitted = false;
   }
@@ -8122,30 +7587,14 @@ module.exports = {
   destroy: destroy,
   undestroy: undestroy
 };
-},{"34":34}],44:[function(_dereq_,module,exports){
+},{"29":29}],39:[function(_dereq_,module,exports){
 module.exports = _dereq_(10).EventEmitter;
 
-},{"10":10}],45:[function(_dereq_,module,exports){
-module.exports = _dereq_(46).PassThrough
-
-},{"46":46}],46:[function(_dereq_,module,exports){
-exports = module.exports = _dereq_(39);
-exports.Stream = exports;
-exports.Readable = exports;
-exports.Writable = _dereq_(41);
-exports.Duplex = _dereq_(37);
-exports.Transform = _dereq_(40);
-exports.PassThrough = _dereq_(38);
-
-},{"37":37,"38":38,"39":39,"40":40,"41":41}],47:[function(_dereq_,module,exports){
-module.exports = _dereq_(46).Transform
-
-},{"46":46}],48:[function(_dereq_,module,exports){
-module.exports = _dereq_(41);
-
-},{"41":41}],49:[function(_dereq_,module,exports){
+},{"10":10}],40:[function(_dereq_,module,exports){
+arguments[4][8][0].apply(exports,arguments)
+},{"8":8}],41:[function(_dereq_,module,exports){
 /* eslint-disable node/no-deprecated-api */
-var buffer = _dereq_(8)
+var buffer = _dereq_(7)
 var Buffer = buffer.Buffer
 
 // alternative to using Object.keys for old browsers
@@ -8207,38 +7656,353 @@ SafeBuffer.allocUnsafeSlow = function (size) {
   return buffer.SlowBuffer(size)
 }
 
-},{"8":8}],50:[function(_dereq_,module,exports){
-/*
-Copyright (c) 2014-2016, Matteo Collina <hello@matteocollina.com>
-
-Permission to use, copy, modify, and/or distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
+},{"7":7}],42:[function(_dereq_,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
-IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
+'use strict';
 
-'use strict'
+/*<replacement>*/
 
-var through = _dereq_(53)
-var StringDecoder = _dereq_(7).StringDecoder
+var Buffer = _dereq_(41).Buffer;
+/*</replacement>*/
 
-function transform (chunk, enc, cb) {
-  this._last += this._decoder.write(chunk)
-  if (this._last.length > this.maxLength) {
-    return cb(new Error('maximum buffer reached'))
+var isEncoding = Buffer.isEncoding || function (encoding) {
+  encoding = '' + encoding;
+  switch (encoding && encoding.toLowerCase()) {
+    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
+      return true;
+    default:
+      return false;
   }
+};
+
+function _normalizeEncoding(enc) {
+  if (!enc) return 'utf8';
+  var retried;
+  while (true) {
+    switch (enc) {
+      case 'utf8':
+      case 'utf-8':
+        return 'utf8';
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return 'utf16le';
+      case 'latin1':
+      case 'binary':
+        return 'latin1';
+      case 'base64':
+      case 'ascii':
+      case 'hex':
+        return enc;
+      default:
+        if (retried) return; // undefined
+        enc = ('' + enc).toLowerCase();
+        retried = true;
+    }
+  }
+};
+
+// Do not cache `Buffer.isEncoding` when checking encoding names as some
+// modules monkey-patch it to support additional encodings
+function normalizeEncoding(enc) {
+  var nenc = _normalizeEncoding(enc);
+  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
+  return nenc || enc;
+}
+
+// StringDecoder provides an interface for efficiently splitting a series of
+// buffers into a series of JS strings without breaking apart multi-byte
+// characters.
+exports.StringDecoder = StringDecoder;
+function StringDecoder(encoding) {
+  this.encoding = normalizeEncoding(encoding);
+  var nb;
+  switch (this.encoding) {
+    case 'utf16le':
+      this.text = utf16Text;
+      this.end = utf16End;
+      nb = 4;
+      break;
+    case 'utf8':
+      this.fillLast = utf8FillLast;
+      nb = 4;
+      break;
+    case 'base64':
+      this.text = base64Text;
+      this.end = base64End;
+      nb = 3;
+      break;
+    default:
+      this.write = simpleWrite;
+      this.end = simpleEnd;
+      return;
+  }
+  this.lastNeed = 0;
+  this.lastTotal = 0;
+  this.lastChar = Buffer.allocUnsafe(nb);
+}
+
+StringDecoder.prototype.write = function (buf) {
+  if (buf.length === 0) return '';
+  var r;
+  var i;
+  if (this.lastNeed) {
+    r = this.fillLast(buf);
+    if (r === undefined) return '';
+    i = this.lastNeed;
+    this.lastNeed = 0;
+  } else {
+    i = 0;
+  }
+  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
+  return r || '';
+};
+
+StringDecoder.prototype.end = utf8End;
+
+// Returns only complete characters in a Buffer
+StringDecoder.prototype.text = utf8Text;
+
+// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
+StringDecoder.prototype.fillLast = function (buf) {
+  if (this.lastNeed <= buf.length) {
+    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
+    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
+  }
+  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
+  this.lastNeed -= buf.length;
+};
+
+// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
+// continuation byte. If an invalid byte is detected, -2 is returned.
+function utf8CheckByte(byte) {
+  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
+  return byte >> 6 === 0x02 ? -1 : -2;
+}
+
+// Checks at most 3 bytes at the end of a Buffer in order to detect an
+// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
+// needed to complete the UTF-8 character (if applicable) are returned.
+function utf8CheckIncomplete(self, buf, i) {
+  var j = buf.length - 1;
+  if (j < i) return 0;
+  var nb = utf8CheckByte(buf[j]);
+  if (nb >= 0) {
+    if (nb > 0) self.lastNeed = nb - 1;
+    return nb;
+  }
+  if (--j < i || nb === -2) return 0;
+  nb = utf8CheckByte(buf[j]);
+  if (nb >= 0) {
+    if (nb > 0) self.lastNeed = nb - 2;
+    return nb;
+  }
+  if (--j < i || nb === -2) return 0;
+  nb = utf8CheckByte(buf[j]);
+  if (nb >= 0) {
+    if (nb > 0) {
+      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
+    }
+    return nb;
+  }
+  return 0;
+}
+
+// Validates as many continuation bytes for a multi-byte UTF-8 character as
+// needed or are available. If we see a non-continuation byte where we expect
+// one, we "replace" the validated continuation bytes we've seen so far with
+// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding
+// behavior. The continuation byte check is included three times in the case
+// where all of the continuation bytes for a character exist in the same buffer.
+// It is also done this way as a slight performance increase instead of using a
+// loop.
+function utf8CheckExtraBytes(self, buf, p) {
+  if ((buf[0] & 0xC0) !== 0x80) {
+    self.lastNeed = 0;
+    return '\ufffd';
+  }
+  if (self.lastNeed > 1 && buf.length > 1) {
+    if ((buf[1] & 0xC0) !== 0x80) {
+      self.lastNeed = 1;
+      return '\ufffd';
+    }
+    if (self.lastNeed > 2 && buf.length > 2) {
+      if ((buf[2] & 0xC0) !== 0x80) {
+        self.lastNeed = 2;
+        return '\ufffd';
+      }
+    }
+  }
+}
+
+// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
+function utf8FillLast(buf) {
+  var p = this.lastTotal - this.lastNeed;
+  var r = utf8CheckExtraBytes(this, buf, p);
+  if (r !== undefined) return r;
+  if (this.lastNeed <= buf.length) {
+    buf.copy(this.lastChar, p, 0, this.lastNeed);
+    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
+  }
+  buf.copy(this.lastChar, p, 0, buf.length);
+  this.lastNeed -= buf.length;
+}
+
+// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
+// partial character, the character's bytes are buffered until the required
+// number of bytes are available.
+function utf8Text(buf, i) {
+  var total = utf8CheckIncomplete(this, buf, i);
+  if (!this.lastNeed) return buf.toString('utf8', i);
+  this.lastTotal = total;
+  var end = buf.length - (total - this.lastNeed);
+  buf.copy(this.lastChar, 0, end);
+  return buf.toString('utf8', i, end);
+}
+
+// For UTF-8, a replacement character is added when ending on a partial
+// character.
+function utf8End(buf) {
+  var r = buf && buf.length ? this.write(buf) : '';
+  if (this.lastNeed) return r + '\ufffd';
+  return r;
+}
+
+// UTF-16LE typically needs two bytes per character, but even if we have an even
+// number of bytes available, we need to check if we end on a leading/high
+// surrogate. In that case, we need to wait for the next two bytes in order to
+// decode the last character properly.
+function utf16Text(buf, i) {
+  if ((buf.length - i) % 2 === 0) {
+    var r = buf.toString('utf16le', i);
+    if (r) {
+      var c = r.charCodeAt(r.length - 1);
+      if (c >= 0xD800 && c <= 0xDBFF) {
+        this.lastNeed = 2;
+        this.lastTotal = 4;
+        this.lastChar[0] = buf[buf.length - 2];
+        this.lastChar[1] = buf[buf.length - 1];
+        return r.slice(0, -1);
+      }
+    }
+    return r;
+  }
+  this.lastNeed = 1;
+  this.lastTotal = 2;
+  this.lastChar[0] = buf[buf.length - 1];
+  return buf.toString('utf16le', i, buf.length - 1);
+}
+
+// For UTF-16LE we do not explicitly append special replacement characters if we
+// end on a partial character, we simply let v8 handle that.
+function utf16End(buf) {
+  var r = buf && buf.length ? this.write(buf) : '';
+  if (this.lastNeed) {
+    var end = this.lastTotal - this.lastNeed;
+    return r + this.lastChar.toString('utf16le', 0, end);
+  }
+  return r;
+}
+
+function base64Text(buf, i) {
+  var n = (buf.length - i) % 3;
+  if (n === 0) return buf.toString('base64', i);
+  this.lastNeed = 3 - n;
+  this.lastTotal = 3;
+  if (n === 1) {
+    this.lastChar[0] = buf[buf.length - 1];
+  } else {
+    this.lastChar[0] = buf[buf.length - 2];
+    this.lastChar[1] = buf[buf.length - 1];
+  }
+  return buf.toString('base64', i, buf.length - n);
+}
+
+function base64End(buf) {
+  var r = buf && buf.length ? this.write(buf) : '';
+  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
+  return r;
+}
+
+// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
+function simpleWrite(buf) {
+  return buf.toString(this.encoding);
+}
+
+function simpleEnd(buf) {
+  return buf && buf.length ? this.write(buf) : '';
+}
+},{"41":41}],43:[function(_dereq_,module,exports){
+module.exports = _dereq_(44).PassThrough
+
+},{"44":44}],44:[function(_dereq_,module,exports){
+exports = module.exports = _dereq_(34);
+exports.Stream = exports;
+exports.Readable = exports;
+exports.Writable = _dereq_(36);
+exports.Duplex = _dereq_(32);
+exports.Transform = _dereq_(35);
+exports.PassThrough = _dereq_(33);
+
+},{"32":32,"33":33,"34":34,"35":35,"36":36}],45:[function(_dereq_,module,exports){
+module.exports = _dereq_(44).Transform
+
+},{"44":44}],46:[function(_dereq_,module,exports){
+module.exports = _dereq_(36);
+
+},{"36":36}],47:[function(_dereq_,module,exports){
+/*
+Copyright (c) 2014-2016, Matteo Collina <hello@matteocollina.com>
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+'use strict'
+
+var through = _dereq_(50)
+var StringDecoder = _dereq_(49).StringDecoder
+
+function transform (chunk, enc, cb) {
+  this._last += this._decoder.write(chunk)
+  if (this._last.length > this.maxLength) {
+    return cb(new Error('maximum buffer reached'))
+  }
+
+  var list = this._last.split(this.matcher)
+
+  this._last = list.pop()
 
-  var list = this._last.split(this.matcher)
-
-  this._last = list.pop()
-
   for (var i = 0; i < list.length; i++) {
     push(this, this.mapper(list[i]))
   }
@@ -8321,7 +8085,7 @@ function split (matcher, mapper, options) {
 
 module.exports = split
 
-},{"53":53,"7":7}],51:[function(_dereq_,module,exports){
+},{"49":49,"50":50}],48:[function(_dereq_,module,exports){
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -8346,14 +8110,14 @@ module.exports = split
 module.exports = Stream;
 
 var EE = _dereq_(10).EventEmitter;
-var inherits = _dereq_(13);
+var inherits = _dereq_(12);
 
 inherits(Stream, EE);
-Stream.Readable = _dereq_(46);
-Stream.Writable = _dereq_(48);
-Stream.Duplex = _dereq_(36);
-Stream.Transform = _dereq_(47);
-Stream.PassThrough = _dereq_(45);
+Stream.Readable = _dereq_(44);
+Stream.Writable = _dereq_(46);
+Stream.Duplex = _dereq_(31);
+Stream.Transform = _dereq_(45);
+Stream.PassThrough = _dereq_(43);
 
 // Backwards-compat with node 0.4.x
 Stream.Stream = Stream;
@@ -8450,284 +8214,234 @@ Stream.prototype.pipe = function(dest, options) {
   return dest;
 };
 
-},{"10":10,"13":13,"36":36,"45":45,"46":46,"47":47,"48":48}],52:[function(_dereq_,module,exports){
-'use strict';
+},{"10":10,"12":12,"31":31,"43":43,"44":44,"45":45,"46":46}],49:[function(_dereq_,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-var Buffer = _dereq_(49).Buffer;
+var Buffer = _dereq_(7).Buffer;
 
-var isEncoding = Buffer.isEncoding || function (encoding) {
-  encoding = '' + encoding;
-  switch (encoding && encoding.toLowerCase()) {
-    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
-      return true;
-    default:
-      return false;
-  }
-};
+var isBufferEncoding = Buffer.isEncoding
+  || function(encoding) {
+       switch (encoding && encoding.toLowerCase()) {
+         case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;
+         default: return false;
+       }
+     }
 
-function _normalizeEncoding(enc) {
-  if (!enc) return 'utf8';
-  var retried;
-  while (true) {
-    switch (enc) {
-      case 'utf8':
-      case 'utf-8':
-        return 'utf8';
-      case 'ucs2':
-      case 'ucs-2':
-      case 'utf16le':
-      case 'utf-16le':
-        return 'utf16le';
-      case 'latin1':
-      case 'binary':
-        return 'latin1';
-      case 'base64':
-      case 'ascii':
-      case 'hex':
-        return enc;
-      default:
-        if (retried) return; // undefined
-        enc = ('' + enc).toLowerCase();
-        retried = true;
-    }
-  }
-};
 
-// Do not cache `Buffer.isEncoding` when checking encoding names as some
-// modules monkey-patch it to support additional encodings
-function normalizeEncoding(enc) {
-  var nenc = _normalizeEncoding(enc);
-  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
-  return nenc || enc;
+function assertEncoding(encoding) {
+  if (encoding && !isBufferEncoding(encoding)) {
+    throw new Error('Unknown encoding: ' + encoding);
+  }
 }
 
 // StringDecoder provides an interface for efficiently splitting a series of
 // buffers into a series of JS strings without breaking apart multi-byte
-// characters.
-exports.StringDecoder = StringDecoder;
-function StringDecoder(encoding) {
-  this.encoding = normalizeEncoding(encoding);
-  var nb;
+// characters. CESU-8 is handled as part of the UTF-8 encoding.
+//
+// @TODO Handling all encodings inside a single object makes it very difficult
+// to reason about this code, so it should be split up in the future.
+// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
+// points as used by CESU-8.
+var StringDecoder = exports.StringDecoder = function(encoding) {
+  this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
+  assertEncoding(encoding);
   switch (this.encoding) {
-    case 'utf16le':
-      this.text = utf16Text;
-      this.end = utf16End;
-      nb = 4;
-      break;
     case 'utf8':
-      this.fillLast = utf8FillLast;
-      nb = 4;
+      // CESU-8 represents each of Surrogate Pair by 3-bytes
+      this.surrogateSize = 3;
+      break;
+    case 'ucs2':
+    case 'utf16le':
+      // UTF-16 represents each of Surrogate Pair by 2-bytes
+      this.surrogateSize = 2;
+      this.detectIncompleteChar = utf16DetectIncompleteChar;
       break;
     case 'base64':
-      this.text = base64Text;
-      this.end = base64End;
-      nb = 3;
+      // Base-64 stores 3 bytes in 4 chars, and pads the remainder.
+      this.surrogateSize = 3;
+      this.detectIncompleteChar = base64DetectIncompleteChar;
       break;
     default:
-      this.write = simpleWrite;
-      this.end = simpleEnd;
+      this.write = passThroughWrite;
       return;
   }
-  this.lastNeed = 0;
-  this.lastTotal = 0;
-  this.lastChar = Buffer.allocUnsafe(nb);
-}
 
-StringDecoder.prototype.write = function (buf) {
-  if (buf.length === 0) return '';
-  var r;
-  var i;
-  if (this.lastNeed) {
-    r = this.fillLast(buf);
-    if (r === undefined) return '';
-    i = this.lastNeed;
-    this.lastNeed = 0;
-  } else {
-    i = 0;
-  }
-  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
-  return r || '';
+  // Enough space to store all bytes of a single character. UTF-8 needs 4
+  // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
+  this.charBuffer = new Buffer(6);
+  // Number of bytes received for the current incomplete multi-byte character.
+  this.charReceived = 0;
+  // Number of bytes expected for the current incomplete multi-byte character.
+  this.charLength = 0;
 };
 
-StringDecoder.prototype.end = utf8End;
 
-// Returns only complete characters in a Buffer
-StringDecoder.prototype.text = utf8Text;
+// write decodes the given buffer and returns it as JS string that is
+// guaranteed to not contain any partial multi-byte characters. Any partial
+// character found at the end of the buffer is buffered up, and will be
+// returned when calling write again with the remaining bytes.
+//
+// Note: Converting a Buffer containing an orphan surrogate to a String
+// currently works, but converting a String to a Buffer (via `new Buffer`, or
+// Buffer#write) will replace incomplete surrogates with the unicode
+// replacement character. See https://codereview.chromium.org/121173009/ .
+StringDecoder.prototype.write = function(buffer) {
+  var charStr = '';
+  // if our last write ended with an incomplete multibyte character
+  while (this.charLength) {
+    // determine how many remaining bytes this buffer has to offer for this char
+    var available = (buffer.length >= this.charLength - this.charReceived) ?
+        this.charLength - this.charReceived :
+        buffer.length;
+
+    // add the new bytes to the char buffer
+    buffer.copy(this.charBuffer, this.charReceived, 0, available);
+    this.charReceived += available;
+
+    if (this.charReceived < this.charLength) {
+      // still not enough chars in this buffer? wait for more ...
+      return '';
+    }
+
+    // remove bytes belonging to the current character from the buffer
+    buffer = buffer.slice(available, buffer.length);
+
+    // get the character that was split
+    charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);
+
+    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
+    var charCode = charStr.charCodeAt(charStr.length - 1);
+    if (charCode >= 0xD800 && charCode <= 0xDBFF) {
+      this.charLength += this.surrogateSize;
+      charStr = '';
+      continue;
+    }
+    this.charReceived = this.charLength = 0;
 
-// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
-StringDecoder.prototype.fillLast = function (buf) {
-  if (this.lastNeed <= buf.length) {
-    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
-    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
+    // if there are no more bytes in this buffer, just emit our char
+    if (buffer.length === 0) {
+      return charStr;
+    }
+    break;
   }
-  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
-  this.lastNeed -= buf.length;
-};
 
-// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
-// continuation byte.
-function utf8CheckByte(byte) {
-  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
-  return -1;
-}
+  // determine and set charLength / charReceived
+  this.detectIncompleteChar(buffer);
 
-// Checks at most 3 bytes at the end of a Buffer in order to detect an
-// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
-// needed to complete the UTF-8 character (if applicable) are returned.
-function utf8CheckIncomplete(self, buf, i) {
-  var j = buf.length - 1;
-  if (j < i) return 0;
-  var nb = utf8CheckByte(buf[j]);
-  if (nb >= 0) {
-    if (nb > 0) self.lastNeed = nb - 1;
-    return nb;
-  }
-  if (--j < i) return 0;
-  nb = utf8CheckByte(buf[j]);
-  if (nb >= 0) {
-    if (nb > 0) self.lastNeed = nb - 2;
-    return nb;
-  }
-  if (--j < i) return 0;
-  nb = utf8CheckByte(buf[j]);
-  if (nb >= 0) {
-    if (nb > 0) {
-      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
-    }
-    return nb;
+  var end = buffer.length;
+  if (this.charLength) {
+    // buffer the incomplete character bytes we got
+    buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
+    end -= this.charReceived;
   }
-  return 0;
-}
 
-// Validates as many continuation bytes for a multi-byte UTF-8 character as
-// needed or are available. If we see a non-continuation byte where we expect
-// one, we "replace" the validated continuation bytes we've seen so far with
-// UTF-8 replacement characters ('\ufffd'), to match v8's UTF-8 decoding
-// behavior. The continuation byte check is included three times in the case
-// where all of the continuation bytes for a character exist in the same buffer.
-// It is also done this way as a slight performance increase instead of using a
-// loop.
-function utf8CheckExtraBytes(self, buf, p) {
-  if ((buf[0] & 0xC0) !== 0x80) {
-    self.lastNeed = 0;
-    return '\ufffd'.repeat(p);
-  }
-  if (self.lastNeed > 1 && buf.length > 1) {
-    if ((buf[1] & 0xC0) !== 0x80) {
-      self.lastNeed = 1;
-      return '\ufffd'.repeat(p + 1);
-    }
-    if (self.lastNeed > 2 && buf.length > 2) {
-      if ((buf[2] & 0xC0) !== 0x80) {
-        self.lastNeed = 2;
-        return '\ufffd'.repeat(p + 2);
-      }
-    }
-  }
-}
+  charStr += buffer.toString(this.encoding, 0, end);
 
-// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
-function utf8FillLast(buf) {
-  var p = this.lastTotal - this.lastNeed;
-  var r = utf8CheckExtraBytes(this, buf, p);
-  if (r !== undefined) return r;
-  if (this.lastNeed <= buf.length) {
-    buf.copy(this.lastChar, p, 0, this.lastNeed);
-    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
+  var end = charStr.length - 1;
+  var charCode = charStr.charCodeAt(end);
+  // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
+  if (charCode >= 0xD800 && charCode <= 0xDBFF) {
+    var size = this.surrogateSize;
+    this.charLength += size;
+    this.charReceived += size;
+    this.charBuffer.copy(this.charBuffer, size, 0, size);
+    buffer.copy(this.charBuffer, 0, 0, size);
+    return charStr.substring(0, end);
   }
-  buf.copy(this.lastChar, p, 0, buf.length);
-  this.lastNeed -= buf.length;
-}
 
-// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
-// partial character, the character's bytes are buffered until the required
-// number of bytes are available.
-function utf8Text(buf, i) {
-  var total = utf8CheckIncomplete(this, buf, i);
-  if (!this.lastNeed) return buf.toString('utf8', i);
-  this.lastTotal = total;
-  var end = buf.length - (total - this.lastNeed);
-  buf.copy(this.lastChar, 0, end);
-  return buf.toString('utf8', i, end);
-}
+  // or just emit the charStr
+  return charStr;
+};
 
-// For UTF-8, a replacement character for each buffered byte of a (partial)
-// character needs to be added to the output.
-function utf8End(buf) {
-  var r = buf && buf.length ? this.write(buf) : '';
-  if (this.lastNeed) return r + '\ufffd'.repeat(this.lastTotal - this.lastNeed);
-  return r;
-}
+// detectIncompleteChar determines if there is an incomplete UTF-8 character at
+// the end of the given buffer. If so, it sets this.charLength to the byte
+// length that character, and sets this.charReceived to the number of bytes
+// that are available for this character.
+StringDecoder.prototype.detectIncompleteChar = function(buffer) {
+  // determine how many bytes we have to check at the end of this buffer
+  var i = (buffer.length >= 3) ? 3 : buffer.length;
 
-// UTF-16LE typically needs two bytes per character, but even if we have an even
-// number of bytes available, we need to check if we end on a leading/high
-// surrogate. In that case, we need to wait for the next two bytes in order to
-// decode the last character properly.
-function utf16Text(buf, i) {
-  if ((buf.length - i) % 2 === 0) {
-    var r = buf.toString('utf16le', i);
-    if (r) {
-      var c = r.charCodeAt(r.length - 1);
-      if (c >= 0xD800 && c <= 0xDBFF) {
-        this.lastNeed = 2;
-        this.lastTotal = 4;
-        this.lastChar[0] = buf[buf.length - 2];
-        this.lastChar[1] = buf[buf.length - 1];
-        return r.slice(0, -1);
-      }
+  // Figure out if one of the last i bytes of our buffer announces an
+  // incomplete char.
+  for (; i > 0; i--) {
+    var c = buffer[buffer.length - i];
+
+    // See http://en.wikipedia.org/wiki/UTF-8#Description
+
+    // 110XXXXX
+    if (i == 1 && c >> 5 == 0x06) {
+      this.charLength = 2;
+      break;
     }
-    return r;
-  }
-  this.lastNeed = 1;
-  this.lastTotal = 2;
-  this.lastChar[0] = buf[buf.length - 1];
-  return buf.toString('utf16le', i, buf.length - 1);
-}
 
-// For UTF-16LE we do not explicitly append special replacement characters if we
-// end on a partial character, we simply let v8 handle that.
-function utf16End(buf) {
-  var r = buf && buf.length ? this.write(buf) : '';
-  if (this.lastNeed) {
-    var end = this.lastTotal - this.lastNeed;
-    return r + this.lastChar.toString('utf16le', 0, end);
+    // 1110XXXX
+    if (i <= 2 && c >> 4 == 0x0E) {
+      this.charLength = 3;
+      break;
+    }
+
+    // 11110XXX
+    if (i <= 3 && c >> 3 == 0x1E) {
+      this.charLength = 4;
+      break;
+    }
   }
-  return r;
-}
+  this.charReceived = i;
+};
 
-function base64Text(buf, i) {
-  var n = (buf.length - i) % 3;
-  if (n === 0) return buf.toString('base64', i);
-  this.lastNeed = 3 - n;
-  this.lastTotal = 3;
-  if (n === 1) {
-    this.lastChar[0] = buf[buf.length - 1];
-  } else {
-    this.lastChar[0] = buf[buf.length - 2];
-    this.lastChar[1] = buf[buf.length - 1];
+StringDecoder.prototype.end = function(buffer) {
+  var res = '';
+  if (buffer && buffer.length)
+    res = this.write(buffer);
+
+  if (this.charReceived) {
+    var cr = this.charReceived;
+    var buf = this.charBuffer;
+    var enc = this.encoding;
+    res += buf.slice(0, cr).toString(enc);
   }
-  return buf.toString('base64', i, buf.length - n);
-}
 
-function base64End(buf) {
-  var r = buf && buf.length ? this.write(buf) : '';
-  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
-  return r;
+  return res;
+};
+
+function passThroughWrite(buffer) {
+  return buffer.toString(this.encoding);
 }
 
-// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
-function simpleWrite(buf) {
-  return buf.toString(this.encoding);
+function utf16DetectIncompleteChar(buffer) {
+  this.charReceived = buffer.length % 2;
+  this.charLength = this.charReceived ? 2 : 0;
 }
 
-function simpleEnd(buf) {
-  return buf && buf.length ? this.write(buf) : '';
+function base64DetectIncompleteChar(buffer) {
+  this.charReceived = buffer.length % 3;
+  this.charLength = this.charReceived ? 3 : 0;
 }
-},{"49":49}],53:[function(_dereq_,module,exports){
+
+},{"7":7}],50:[function(_dereq_,module,exports){
 (function (process){
-var Transform = _dereq_(47)
-  , inherits  = _dereq_(57).inherits
-  , xtend     = _dereq_(58)
+var Transform = _dereq_(44).Transform
+  , inherits  = _dereq_(54).inherits
+  , xtend     = _dereq_(55)
 
 function DestroyableTransform(opts) {
   Transform.call(this, opts)
@@ -8822,8 +8536,8 @@ module.exports.obj = through2(function (options, transform, flush) {
   return t2
 })
 
-}).call(this,_dereq_(35))
-},{"35":35,"47":47,"57":57,"58":58}],54:[function(_dereq_,module,exports){
+}).call(this,_dereq_(30))
+},{"30":30,"44":44,"54":54,"55":55}],51:[function(_dereq_,module,exports){
 (function (global){
 
 /**
@@ -8894,16 +8608,39 @@ function config (name) {
 }
 
 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{}],55:[function(_dereq_,module,exports){
-arguments[4][13][0].apply(exports,arguments)
-},{"13":13}],56:[function(_dereq_,module,exports){
+},{}],52:[function(_dereq_,module,exports){
+if (typeof Object.create === 'function') {
+  // implementation from standard node.js 'util' module
+  module.exports = function inherits(ctor, superCtor) {
+    ctor.super_ = superCtor
+    ctor.prototype = Object.create(superCtor.prototype, {
+      constructor: {
+        value: ctor,
+        enumerable: false,
+        writable: true,
+        configurable: true
+      }
+    });
+  };
+} else {
+  // old school shim for old browsers
+  module.exports = function inherits(ctor, superCtor) {
+    ctor.super_ = superCtor
+    var TempCtor = function () {}
+    TempCtor.prototype = superCtor.prototype
+    ctor.prototype = new TempCtor()
+    ctor.prototype.constructor = ctor
+  }
+}
+
+},{}],53:[function(_dereq_,module,exports){
 module.exports = function isBuffer(arg) {
   return arg && typeof arg === 'object'
     && typeof arg.copy === 'function'
     && typeof arg.fill === 'function'
     && typeof arg.readUInt8 === 'function';
 }
-},{}],57:[function(_dereq_,module,exports){
+},{}],54:[function(_dereq_,module,exports){
 (function (process,global){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -9430,7 +9167,7 @@ function isPrimitive(arg) {
 }
 exports.isPrimitive = isPrimitive;
 
-exports.isBuffer = _dereq_(56);
+exports.isBuffer = _dereq_(53);
 
 function objectToString(o) {
   return Object.prototype.toString.call(o);
@@ -9474,7 +9211,7 @@ exports.log = function() {
  *     prototype.
  * @param {function} superCtor Constructor function to inherit prototype from.
  */
-exports.inherits = _dereq_(55);
+exports.inherits = _dereq_(52);
 
 exports._extend = function(origin, add) {
   // Don't do anything if add isn't an object
@@ -9492,8 +9229,8 @@ function hasOwnProperty(obj, prop) {
   return Object.prototype.hasOwnProperty.call(obj, prop);
 }
 
-}).call(this,_dereq_(35),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"35":35,"55":55,"56":56}],58:[function(_dereq_,module,exports){
+}).call(this,_dereq_(30),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"30":30,"52":52,"53":53}],55:[function(_dereq_,module,exports){
 module.exports = extend
 
 var hasOwnProperty = Object.prototype.hasOwnProperty;
@@ -9514,7 +9251,7 @@ function extend() {
     return target
 }
 
-},{}],59:[function(_dereq_,module,exports){
+},{}],56:[function(_dereq_,module,exports){
 module.exports={
   "name": "pouchdb-replication-stream",
   "version": "1.2.9",
@@ -9556,7 +9293,8 @@ module.exports={
     "lodash.pick": "^4.0.0",
     "ndjson": "^1.4.3",
     "pouch-stream": "^0.4.0",
-    "pouchdb-promise": "^6.0.4",
+    "pouchdb": "^8.0.1",
+    "pouchdb-adapter-memory": "^8.0.1",
     "through2": "^2.0.0"
   },
   "devDependencies": {
@@ -9576,25 +9314,24 @@ module.exports={
     "mocha": "~1.18",
     "noms": "0.0.0",
     "phantomjs": "^1.9.7-5",
-    "pouchdb-memory": "^6.0.0",
     "random-document-stream": "0.0.0",
     "request": "^2.36.0",
     "sauce-connect-launcher": "^0.4.2",
-    "selenium-standalone": "3.0.2",
+    "selenium-standalone": "6.16.0",
     "uglify-js": "^2.4.13",
     "watchify": "^3.1.0",
     "wd": "^0.2.21"
   }
 }
 
-},{}],60:[function(_dereq_,module,exports){
+},{}],57:[function(_dereq_,module,exports){
 'use strict';
 
 var utils = _dereq_(1);
 var version = _dereq_(3);
-var ndj = _dereq_(19);
-var through = _dereq_(53).obj;
-var pick = _dereq_(18);
+var ndj = _dereq_(17);
+var through = _dereq_(50).obj;
+var pick = _dereq_(16);
 var toBufferStream = _dereq_(2);
 var DEFAULT_BATCH_SIZE = 50;
 
@@ -9612,7 +9349,7 @@ var ALLOWED_PARAMS = [
 exports.adapters = {};
 exports.adapters.writableStream = _dereq_(4);
 
-exports.plugin = _dereq_(22);
+exports.plugin = _dereq_(20);
 
 exports.plugin.dump = utils.toPromise(function (writableStream, opts, callback) {
   var self = this;
@@ -9719,5 +9456,5 @@ if (typeof window !== 'undefined' && window.PouchDB) {
   window.PouchDB.adapter('writableStream', exports.adapters.writableStream);
 }
 
-},{"1":1,"18":18,"19":19,"2":2,"22":22,"3":3,"4":4,"53":53}]},{},[60])(60)
+},{"1":1,"16":16,"17":17,"2":2,"20":20,"3":3,"4":4,"50":50}]},{},[57])(57)
 });
diff --git a/dist/pouchdb.replication-stream.min.js b/dist/pouchdb.replication-stream.min.js
index 7b1dea8..c6fd1f5 100644
--- a/dist/pouchdb.replication-stream.min.js
+++ b/dist/pouchdb.replication-stream.min.js
@@ -1,4 +1,4 @@
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window?window:{})},{30:30,52:52,53:53}],55:[function(e,t,n){function r(){for(var e={},t=0;t<arguments.length;t++){var n=arguments[t];for(var r in n)i.call(n,r)&&(e[r]=n[r])}return e}t.exports=r;var i=Object.prototype.hasOwnProperty},{}],56:[function(e,t,n){t.exports={name:"pouchdb-replication-stream",version:"1.2.9",description:"PouchDB/CouchDB replication as a stream",main:"lib/index.js",repository:{type:"git",url:"git://github.com/nolanlawson/pouchdb-replication-stream.git"},
+keywords:["pouch","pouchdb","plugin","stream","replication","couch","couchdb"],author:"",license:"Apache-2.0",bugs:{url:"https://github.com/nolanlawson/pouchdb-replication-stream/issues"},scripts:{"test-node":"TEST_DB=testdb,http://localhost:5984/testdb istanbul test ./node_modules/mocha/bin/_mocha test/test.js -- -R spec","test-browser":"./bin/test-browser.js",jshint:"jshint -c .jshintrc lib test/test.js",test:"npm run jshint && ./bin/run-test.sh",build:"mkdirp dist && npm run browserify && npm run min",browserify:"browserify -p bundle-collapser/plugin -s PouchReplicationStream . | ./bin/es3ify.js | derequire > dist/pouchdb.replication-stream.js",min:"uglifyjs dist/pouchdb.replication-stream.js -mc > dist/pouchdb.replication-stream.min.js",dev:"browserify test/test.js > test/test-bundle.js && npm run dev-server","dev-server":"./bin/dev-server.js",coverage:"npm test --coverage && istanbul check-coverage --lines 100 --function 100 --statements 100 --branches 100"},dependencies:{argsarray:"0.0.1",inherits:"^2.0.3","lodash.pick":"^4.0.0",ndjson:"^1.4.3","pouch-stream":"^0.4.0",pouchdb:"^8.0.1","pouchdb-adapter-memory":"^8.0.1",through2:"^2.0.0"},devDependencies:{bluebird:"^1.0.7",browserify:"^11.2.0","bundle-collapser":"^1.2.1",chai:"^3.3.0","chai-as-promised":"^5.1.0",derequire:"^2.0.0",es3ify:"^0.1.3","http-server":"~0.8.5",istanbul:"^0.2.7",jshint:"^2.3.0",lie:"^3.1.0",memorystream:"^0.3.0",mkdirp:"^0.5.0",mocha:"~1.18",noms:"0.0.0",phantomjs:"^1.9.7-5","random-document-stream":"0.0.0",request:"^2.36.0","sauce-connect-launcher":"^0.4.2","selenium-standalone":"6.16.0","uglify-js":"^2.4.13",watchify:"^3.1.0",wd:"^0.2.21"}}},{}],57:[function(e,t,n){"use strict";var r=e(1),i=e(3),o=e(17),s=e(50).obj,a=e(16),u=e(2),f=["batch_size","batches_limit","filter","doc_ids","query_params","since","view"];n.adapters={},n.adapters.writableStream=e(4),n.plugin=e(20),n.plugin.dump=r.toPromise(function(e,t,n){function r(e){n(e)}var o=this;"function"==typeof t&&(n=t,t={});var s=o.constructor,u=o.name||o._db_name,c=new s(u,{adapter:"writableStream"});c.setupStream(e),o.info().then(function(n){var r={version:i,db_type:o.type(),start_time:(new Date).toJSON(),db_info:n};return e.write(JSON.stringify(r)+"\n"),t=a(t,f),t.batch_size||(t.batch_size=50),o.replicate.to(c,t)}).then(function(){return c.close()}).then(function(){n(null,{ok:!0})}).catch(r)}),n.plugin.load=r.toPromise(function(e,t,n){"function"==typeof t&&(n=t,t={});var r;r="batch_size"in t?t.batch_size:50;var i=null,a=[];e.pipe(u()).pipe(o.parse()).on("error",function(e){i=e}).pipe(s(function(e,t,n){if(!e.docs)return n();e.docs.forEach(function(e){this.push(e)},this),n()})).pipe(s(function(e,t,n){a.push(e),a.length>=r&&(this.push(a),a=[]),n()},function(e){a.length&&this.push(a),e()})).pipe(this.createWriteStream({new_edits:!1})).on("error",n).on("finish",function(){n(i,{ok:!0})})}),"undefined"!=typeof window&&window.PouchDB&&(window.PouchDB.plugin(n.plugin),window.PouchDB.adapter("writableStream",n.adapters.writableStream))},{1:1,16:16,17:17,2:2,20:20,3:3,4:4,50:50}]},{},[57])(57)});
diff --git a/lib/pouch-utils.js b/lib/pouch-utils.js
index c906677..909a1c0 100644
--- a/lib/pouch-utils.js
+++ b/lib/pouch-utils.js
@@ -1,7 +1,5 @@
 'use strict';
 
-var Promise = require('pouchdb-promise');
-
 /* istanbul ignore next */
 exports.once = function (fun) {
   var called = false;
diff --git a/lib/writable-stream.js b/lib/writable-stream.js
index 1bc0c51..1195def 100644
--- a/lib/writable-stream.js
+++ b/lib/writable-stream.js
@@ -1,7 +1,6 @@
 'use strict';
 
 var utils = require('./pouch-utils');
-var Promise = require('pouchdb-promise');
 var ERROR_REV_CONFLICT = {
   status: 409,
   name: 'conflict',
diff --git a/package.json b/package.json
index 563f15e..52e7990 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,8 @@
     "lodash.pick": "^4.0.0",
     "ndjson": "^1.4.3",
     "pouch-stream": "^0.4.0",
-    "pouchdb-promise": "^6.0.4",
+    "pouchdb": "^8.0.1",
+    "pouchdb-adapter-memory": "^8.0.1",
     "through2": "^2.0.0"
   },
   "devDependencies": {
@@ -59,11 +60,10 @@
     "mocha": "~1.18",
     "noms": "0.0.0",
     "phantomjs": "^1.9.7-5",
-    "pouchdb-memory": "^6.0.0",
     "random-document-stream": "0.0.0",
     "request": "^2.36.0",
     "sauce-connect-launcher": "^0.4.2",
-    "selenium-standalone": "3.0.2",
+    "selenium-standalone": "6.16.0",
     "uglify-js": "^2.4.13",
     "watchify": "^3.1.0",
     "wd": "^0.2.21"
diff --git a/test/test.js b/test/test.js
index 897c31a..95bd58f 100644
--- a/test/test.js
+++ b/test/test.js
@@ -1,6 +1,8 @@
 'use strict';
 
-var Pouch = require('pouchdb-memory');
+var Pouch = require('pouchdb');
+// Pouch.plugin(require('pouchdb-adapter-memory'));
+
 //var Readable = require('stream').Readable;
 //var Writable = require('stream').Writable;
 
@@ -130,7 +132,7 @@ function tests(dbName, dbType) {
               lastSeq = item.seq;
             }
           });
-          lastSeq.should.equal(180);
+          lastSeq.toString().should.match(/^180/);
           done();
         }).catch(done);
       });
@@ -166,13 +168,18 @@ function tests(dbName, dbType) {
 
     it('should replicate using since/batch_size 1', function () {
       var stream = new MemoryStream();
+      
+      var since;
 
       return db.put({_id: 'testdoc1'}).then(function () {
-        return db.put({_id: 'testdoc2'});
+        return db.changes().then(function (changes) {
+          since = changes.last_seq;
+          return db.put({_id: 'testdoc2'});
+        });
       }).then(function () {
         return Promise.all([
           db.dump(stream, {
-            since: 1,
+            since: since,
             batch_size: 1
           }),
           remote.load(stream)
@@ -188,12 +195,17 @@ function tests(dbName, dbType) {
     it('should replicate using since/batch_size 2', function () {
       var stream = new MemoryStream();
 
+      var since;
+
       return db.put({_id: 'testdoc1'}).then(function () {
-        return db.put({_id: 'testdoc2'});
+        return db.changes().then(function (changes) {
+          since = changes.last_seq;
+          return db.put({_id: 'testdoc2'});
+        });
       }).then(function () {
         return Promise.all([
           db.dump(stream, {
-            since: 1,
+            since: since,
             batch_size: 100
           }),
           remote.load(stream)