diff --git a/example.htm b/example.htm
index b1672b6..c189828 100644
--- a/example.htm
+++ b/example.htm
@@ -13,10 +13,12 @@
 	// ctx.fillText('2小時可換乘2次2小時可換乘2次', 100, 80)
 	ctx.font = '30px sans-serif'
 	ctx.fillText('the Cosmic Void', 100, 120)
+
 	Tesseract.recognize(canvas,{
 		tessedit_char_blacklist:'e',
 		progress: function(e){
 			console.log(e)
 		}
 	}).then( function(d){ console.log(d) } )
+
 </script>
\ No newline at end of file
diff --git a/lib/worker.js b/lib/worker.js
index 0c6a20f..11b1427 100644
--- a/lib/worker.js
+++ b/lib/worker.js
@@ -1,6756 +1,11350 @@
 (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
-// Top level file is just a mixin of submodules & constants
-'use strict';
+(function (Buffer){
+module.exports = Level
+
+var IDB = require('idb-wrapper')
+var AbstractLevelDOWN = require('abstract-leveldown').AbstractLevelDOWN
+var util = require('util')
+var Iterator = require('./iterator')
+var isBuffer = require('isbuffer')
+var xtend = require('xtend')
+var toBuffer = require('typedarray-to-buffer')
+
+function Level(location) {
+  if (!(this instanceof Level)) return new Level(location)
+  if (!location) throw new Error("constructor requires at least a location argument")
+  this.IDBOptions = {}
+  this.location = location
+}
 
-var assign    = require('./lib/utils/common').assign;
+util.inherits(Level, AbstractLevelDOWN)
+
+Level.prototype._open = function(options, callback) {
+  var self = this
+    
+  var idbOpts = {
+    storeName: this.location,
+    autoIncrement: false,
+    keyPath: null,
+    onStoreReady: function () {
+      callback && callback(null, self.idb)
+    }, 
+    onError: function(err) {
+      callback && callback(err)
+    }
+  }
+  
+  xtend(idbOpts, options)
+  this.IDBOptions = idbOpts
+  this.idb = new IDB(idbOpts)
+}
 
-var deflate   = require('./lib/deflate');
-var inflate   = require('./lib/inflate');
-var constants = require('./lib/zlib/constants');
+Level.prototype._get = function (key, options, callback) {
+  this.idb.get(key, function (value) {
+    if (value === undefined) {
+      // 'NotFound' error, consistent with LevelDOWN API
+      return callback(new Error('NotFound'))
+    }
+    // by default return buffers, unless explicitly told not to
+    var asBuffer = true
+    if (options.asBuffer === false) asBuffer = false
+    if (options.raw) asBuffer = false
+    if (asBuffer) {
+      if (value instanceof Uint8Array) value = toBuffer(value)
+      else value = new Buffer(String(value))
+    }
+    return callback(null, value, key)
+  }, callback)
+}
 
-var pako = {};
+Level.prototype._del = function(id, options, callback) {
+  this.idb.remove(id, callback, callback)
+}
 
-assign(pako, deflate, inflate, constants);
+Level.prototype._put = function (key, value, options, callback) {
+  if (value instanceof ArrayBuffer) {
+    value = toBuffer(new Uint8Array(value))
+  }
+  var obj = this.convertEncoding(key, value, options)
+  if (Buffer.isBuffer(obj.value)) {
+    obj.value = new Uint8Array(value.toArrayBuffer())
+  }
+  this.idb.put(obj.key, obj.value, function() { callback() }, callback)
+}
 
-module.exports = pako;
+Level.prototype.convertEncoding = function(key, value, options) {
+  if (options.raw) return {key: key, value: value}
+  if (value) {
+    var stringed = value.toString()
+    if (stringed === 'NaN') value = 'NaN'
+  }
+  var valEnc = options.valueEncoding
+  var obj = {key: key, value: value}
+  if (value && (!valEnc || valEnc !== 'binary')) {
+    if (typeof obj.value !== 'object') {
+      obj.value = stringed
+    }
+  }
+  return obj
+}
 
-},{"./lib/deflate":2,"./lib/inflate":3,"./lib/utils/common":4,"./lib/zlib/constants":7}],2:[function(require,module,exports){
-'use strict';
+Level.prototype.iterator = function (options) {
+  if (typeof options !== 'object') options = {}
+  return new Iterator(this.idb, options)
+}
 
+Level.prototype._batch = function (array, options, callback) {
+  var op
+  var i
+  var k
+  var copiedOp
+  var currentOp
+  var modified = []
+  
+  if (array.length === 0) return setTimeout(callback, 0)
+  
+  for (i = 0; i < array.length; i++) {
+    copiedOp = {}
+    currentOp = array[i]
+    modified[i] = copiedOp
+    
+    var converted = this.convertEncoding(currentOp.key, currentOp.value, options)
+    currentOp.key = converted.key
+    currentOp.value = converted.value
+
+    for (k in currentOp) {
+      if (k === 'type' && currentOp[k] == 'del') {
+        copiedOp[k] = 'remove'
+      } else {
+        copiedOp[k] = currentOp[k]
+      }
+    }
+  }
 
-var zlib_deflate = require('./zlib/deflate.js');
-var utils = require('./utils/common');
-var strings = require('./utils/strings');
-var msg = require('./zlib/messages');
-var zstream = require('./zlib/zstream');
+  return this.idb.batch(modified, function(){ callback() }, callback)
+}
 
-var toString = Object.prototype.toString;
+Level.prototype._close = function (callback) {
+  this.idb.db.close()
+  callback()
+}
 
-/* Public constants ==========================================================*/
-/* ===========================================================================*/
+Level.prototype._approximateSize = function (start, end, callback) {
+  var err = new Error('Not implemented')
+  if (callback)
+    return callback(err)
 
-var Z_NO_FLUSH      = 0;
-var Z_FINISH        = 4;
+  throw err
+}
 
-var Z_OK            = 0;
-var Z_STREAM_END    = 1;
-var Z_SYNC_FLUSH    = 2;
+Level.prototype._isBuffer = function (obj) {
+  return Buffer.isBuffer(obj)
+}
 
-var Z_DEFAULT_COMPRESSION = -1;
+Level.destroy = function (db, callback) {
+  if (typeof db === 'object') {
+    var prefix = db.IDBOptions.storePrefix || 'IDBWrapper-'
+    var dbname = db.location
+  } else {
+    var prefix = 'IDBWrapper-'
+    var dbname = db
+  }
+  var request = indexedDB.deleteDatabase(prefix + dbname)
+  request.onsuccess = function() {
+    callback()
+  }
+  request.onerror = function(err) {
+    callback(err)
+  }
+}
 
-var Z_DEFAULT_STRATEGY    = 0;
+var checkKeyValue = Level.prototype._checkKeyValue = function (obj, type) {
+  if (obj === null || obj === undefined)
+    return new Error(type + ' cannot be `null` or `undefined`')
+  if (obj === null || obj === undefined)
+    return new Error(type + ' cannot be `null` or `undefined`')
+  if (isBuffer(obj) && obj.byteLength === 0)
+    return new Error(type + ' cannot be an empty ArrayBuffer')
+  if (String(obj) === '')
+    return new Error(type + ' cannot be an empty String')
+  if (obj.length === 0)
+    return new Error(type + ' cannot be an empty Array')
+}
 
-var Z_DEFLATED  = 8;
+}).call(this,require("buffer").Buffer)
+},{"./iterator":2,"abstract-leveldown":5,"buffer":34,"idb-wrapper":7,"isbuffer":8,"typedarray-to-buffer":10,"util":41,"xtend":12}],2:[function(require,module,exports){
+var util = require('util')
+var AbstractIterator  = require('abstract-leveldown').AbstractIterator
+var ltgt = require('ltgt')
+
+module.exports = Iterator
+
+function Iterator (db, options) {
+  if (!options) options = {}
+  this.options = options
+  AbstractIterator.call(this, db)
+  this._order = options.reverse ? 'DESC': 'ASC'
+  this._limit = options.limit
+  this._count = 0
+  this._done  = false
+  var lower = ltgt.lowerBound(options)
+  var upper = ltgt.upperBound(options)
+  this._keyRange = lower || upper ? this.db.makeKeyRange({
+    lower: lower,
+    upper: upper,
+    excludeLower: ltgt.lowerBoundExclusive(options),
+    excludeUpper: ltgt.upperBoundExclusive(options)
+  }) : null
+  this.callback = null
+}
 
-/* ===========================================================================*/
+util.inherits(Iterator, AbstractIterator)
 
+Iterator.prototype.createIterator = function() {
+  var self = this
 
-/**
- * class Deflate
- *
- * Generic JS-style wrapper for zlib calls. If you don't need
- * streaming behaviour - use more simple functions: [[deflate]],
- * [[deflateRaw]] and [[gzip]].
- **/
+  self.iterator = self.db.iterate(function () {
+    self.onItem.apply(self, arguments)
+  }, {
+    keyRange: self._keyRange,
+    autoContinue: false,
+    order: self._order,
+    onError: function(err) { console.log('horrible error', err) },
+  })
+}
 
-/* internal
- * Deflate.chunks -> Array
- *
- * Chunks of output data, if [[Deflate#onData]] not overriden.
- **/
+// TODO the limit implementation here just ignores all reads after limit has been reached
+// it should cancel the iterator instead but I don't know how
+Iterator.prototype.onItem = function (value, cursor, cursorTransaction) {
+  if (!cursor && this.callback) {
+    this.callback()
+    this.callback = false
+    return
+  }
+  var shouldCall = true
 
-/**
- * Deflate.result -> Uint8Array|Array
- *
- * Compressed result, generated by default [[Deflate#onData]]
- * and [[Deflate#onEnd]] handlers. Filled after you push last chunk
- * (call [[Deflate#push]] with `Z_FINISH` / `true` param)  or if you
- * push a chunk with explicit flush (call [[Deflate#push]] with
- * `Z_SYNC_FLUSH` param).
- **/
+  if (!!this._limit && this._limit > 0 && this._count++ >= this._limit)
+    shouldCall = false
 
-/**
- * Deflate.err -> Number
- *
- * Error code after deflate finished. 0 (Z_OK) on success.
- * You will not need it in real life, because deflate errors
- * are possible only on wrong options or bad `onData` / `onEnd`
- * custom handlers.
- **/
+  if (shouldCall) this.callback(false, cursor.key, cursor.value)
+  if (cursor) cursor['continue']()
+}
 
-/**
- * Deflate.msg -> String
- *
- * Error message, if [[Deflate.err]] != 0
- **/
+Iterator.prototype._next = function (callback) {
+  if (!callback) return new Error('next() requires a callback argument')
+  if (!this._started) {
+    this.createIterator()
+    this._started = true
+  }
+  this.callback = callback
+}
 
+},{"abstract-leveldown":5,"ltgt":9,"util":41}],3:[function(require,module,exports){
+(function (process){
+/* Copyright (c) 2013 Rod Vagg, MIT License */
 
-/**
- * new Deflate(options)
- * - options (Object): zlib deflate options.
- *
- * Creates new deflator instance with specified params. Throws exception
- * on bad params. Supported options:
- *
- * - `level`
- * - `windowBits`
- * - `memLevel`
- * - `strategy`
- *
- * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
- * for more information on these.
- *
- * Additional options, for internal needs:
- *
- * - `chunkSize` - size of generated data chunks (16K by default)
- * - `raw` (Boolean) - do raw deflate
- * - `gzip` (Boolean) - create gzip wrapper
- * - `to` (String) - if equal to 'string', then result will be "binary string"
- *    (each char code [0..255])
- * - `header` (Object) - custom header for gzip
- *   - `text` (Boolean) - true if compressed data believed to be text
- *   - `time` (Number) - modification time, unix timestamp
- *   - `os` (Number) - operation system code
- *   - `extra` (Array) - array of bytes with extra data (max 65536)
- *   - `name` (String) - file name (binary string)
- *   - `comment` (String) - comment (binary string)
- *   - `hcrc` (Boolean) - true if header crc should be added
- *
- * ##### Example:
- *
- * ```javascript
- * var pako = require('pako')
- *   , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])
- *   , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);
- *
- * var deflate = new pako.Deflate({ level: 3});
- *
- * deflate.push(chunk1, false);
- * deflate.push(chunk2, true);  // true -> last chunk
- *
- * if (deflate.err) { throw new Error(deflate.err); }
- *
- * console.log(deflate.result);
- * ```
- **/
-var Deflate = function(options) {
+function AbstractChainedBatch (db) {
+  this._db         = db
+  this._operations = []
+  this._written    = false
+}
 
-  this.options = utils.assign({
-    level: Z_DEFAULT_COMPRESSION,
-    method: Z_DEFLATED,
-    chunkSize: 16384,
-    windowBits: 15,
-    memLevel: 8,
-    strategy: Z_DEFAULT_STRATEGY,
-    to: ''
-  }, options || {});
+AbstractChainedBatch.prototype._checkWritten = function () {
+  if (this._written)
+    throw new Error('write() already called on this batch')
+}
 
-  var opt = this.options;
+AbstractChainedBatch.prototype.put = function (key, value) {
+  this._checkWritten()
 
-  if (opt.raw && (opt.windowBits > 0)) {
-    opt.windowBits = -opt.windowBits;
-  }
+  var err = this._db._checkKeyValue(key, 'key', this._db._isBuffer)
+  if (err) throw err
+  err = this._db._checkKeyValue(value, 'value', this._db._isBuffer)
+  if (err) throw err
 
-  else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) {
-    opt.windowBits += 16;
-  }
+  if (!this._db._isBuffer(key)) key = String(key)
+  if (!this._db._isBuffer(value)) value = String(value)
 
-  this.err    = 0;      // error code, if happens (0 = Z_OK)
-  this.msg    = '';     // error message
-  this.ended  = false;  // used to avoid multiple onEnd() calls
-  this.chunks = [];     // chunks of compressed data
+  if (typeof this._put == 'function' )
+    this._put(key, value)
+  else
+    this._operations.push({ type: 'put', key: key, value: value })
 
-  this.strm = new zstream();
-  this.strm.avail_out = 0;
+  return this
+}
 
-  var status = zlib_deflate.deflateInit2(
-    this.strm,
-    opt.level,
-    opt.method,
-    opt.windowBits,
-    opt.memLevel,
-    opt.strategy
-  );
+AbstractChainedBatch.prototype.del = function (key) {
+  this._checkWritten()
 
-  if (status !== Z_OK) {
-    throw new Error(msg[status]);
-  }
+  var err = this._db._checkKeyValue(key, 'key', this._db._isBuffer)
+  if (err) throw err
 
-  if (opt.header) {
-    zlib_deflate.deflateSetHeader(this.strm, opt.header);
-  }
-};
+  if (!this._db._isBuffer(key)) key = String(key)
 
-/**
- * Deflate#push(data[, mode]) -> Boolean
- * - data (Uint8Array|Array|ArrayBuffer|String): input data. Strings will be
- *   converted to utf8 byte sequence.
- * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
- *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` meansh Z_FINISH.
- *
- * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with
- * new compressed chunks. Returns `true` on success. The last data block must have
- * mode Z_FINISH (or `true`). That will flush internal pending buffers and call
- * [[Deflate#onEnd]]. For interim explicit flushes (without ending the stream) you
- * can use mode Z_SYNC_FLUSH, keeping the compression context.
- *
- * On fail call [[Deflate#onEnd]] with error code and return false.
- *
- * We strongly recommend to use `Uint8Array` on input for best speed (output
- * array format is detected automatically). Also, don't skip last param and always
- * use the same type in your code (boolean or number). That will improve JS speed.
- *
- * For regular `Array`-s make sure all elements are [0..255].
- *
- * ##### Example
- *
- * ```javascript
- * push(chunk, false); // push one of data chunks
- * ...
- * push(chunk, true);  // push last chunk
- * ```
- **/
-Deflate.prototype.push = function(data, mode) {
-  var strm = this.strm;
-  var chunkSize = this.options.chunkSize;
-  var status, _mode;
+  if (typeof this._del == 'function' )
+    this._del(key)
+  else
+    this._operations.push({ type: 'del', key: key })
 
-  if (this.ended) { return false; }
+  return this
+}
 
-  _mode = (mode === ~~mode) ? mode : ((mode === true) ? Z_FINISH : Z_NO_FLUSH);
+AbstractChainedBatch.prototype.clear = function () {
+  this._checkWritten()
 
-  // Convert data if needed
-  if (typeof data === 'string') {
-    // If we need to compress text, change encoding to utf8.
-    strm.input = strings.string2buf(data);
-  } else if (toString.call(data) === '[object ArrayBuffer]') {
-    strm.input = new Uint8Array(data);
-  } else {
-    strm.input = data;
-  }
+  this._operations = []
 
-  strm.next_in = 0;
-  strm.avail_in = strm.input.length;
+  if (typeof this._clear == 'function' )
+    this._clear()
 
-  do {
-    if (strm.avail_out === 0) {
-      strm.output = new utils.Buf8(chunkSize);
-      strm.next_out = 0;
-      strm.avail_out = chunkSize;
-    }
-    status = zlib_deflate.deflate(strm, _mode);    /* no bad return value */
+  return this
+}
 
-    if (status !== Z_STREAM_END && status !== Z_OK) {
-      this.onEnd(status);
-      this.ended = true;
-      return false;
-    }
-    if (strm.avail_out === 0 || (strm.avail_in === 0 && (_mode === Z_FINISH || _mode === Z_SYNC_FLUSH))) {
-      if (this.options.to === 'string') {
-        this.onData(strings.buf2binstring(utils.shrinkBuf(strm.output, strm.next_out)));
-      } else {
-        this.onData(utils.shrinkBuf(strm.output, strm.next_out));
-      }
-    }
-  } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== Z_STREAM_END);
+AbstractChainedBatch.prototype.write = function (options, callback) {
+  this._checkWritten()
 
-  // Finalize on the last chunk.
-  if (_mode === Z_FINISH) {
-    status = zlib_deflate.deflateEnd(this.strm);
-    this.onEnd(status);
-    this.ended = true;
-    return status === Z_OK;
-  }
+  if (typeof options == 'function')
+    callback = options
+  if (typeof callback != 'function')
+    throw new Error('write() requires a callback argument')
+  if (typeof options != 'object')
+    options = {}
 
-  // callback interim results if Z_SYNC_FLUSH.
-  if (_mode === Z_SYNC_FLUSH) {
-    this.onEnd(Z_OK);
-    strm.avail_out = 0;
-    return true;
-  }
+  this._written = true
 
-  return true;
-};
+  if (typeof this._write == 'function' )
+    return this._write(callback)
 
+  if (typeof this._db._batch == 'function')
+    return this._db._batch(this._operations, options, callback)
 
-/**
- * Deflate#onData(chunk) -> Void
- * - chunk (Uint8Array|Array|String): ouput data. Type of array depends
- *   on js engine support. When string output requested, each chunk
- *   will be string.
- *
- * By default, stores data blocks in `chunks[]` property and glue
- * those in `onEnd`. Override this handler, if you need another behaviour.
- **/
-Deflate.prototype.onData = function(chunk) {
-  this.chunks.push(chunk);
-};
+  process.nextTick(callback)
+}
 
+module.exports = AbstractChainedBatch
+}).call(this,require('_process'))
+},{"_process":39}],4:[function(require,module,exports){
+(function (process){
+/* Copyright (c) 2013 Rod Vagg, MIT License */
 
-/**
- * Deflate#onEnd(status) -> Void
- * - status (Number): deflate status. 0 (Z_OK) on success,
- *   other if not.
- *
- * Called once after you tell deflate that the input stream is
- * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)
- * or if an error happened. By default - join collected chunks,
- * free memory and fill `results` / `err` properties.
- **/
-Deflate.prototype.onEnd = function(status) {
-  // On success - join
-  if (status === Z_OK) {
-    if (this.options.to === 'string') {
-      this.result = this.chunks.join('');
-    } else {
-      this.result = utils.flattenChunks(this.chunks);
-    }
-  }
-  this.chunks = [];
-  this.err = status;
-  this.msg = this.strm.msg;
-};
+function AbstractIterator (db) {
+  this.db = db
+  this._ended = false
+  this._nexting = false
+}
 
+AbstractIterator.prototype.next = function (callback) {
+  var self = this
 
-/**
- * deflate(data[, options]) -> Uint8Array|Array|String
- * - data (Uint8Array|Array|String): input data to compress.
- * - options (Object): zlib deflate options.
- *
- * Compress `data` with deflate alrorythm and `options`.
- *
- * Supported options are:
- *
- * - level
- * - windowBits
- * - memLevel
- * - strategy
- *
- * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
- * for more information on these.
- *
- * Sugar (options):
- *
- * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify
- *   negative windowBits implicitly.
- * - `to` (String) - if equal to 'string', then result will be "binary string"
- *    (each char code [0..255])
- *
- * ##### Example:
- *
- * ```javascript
- * var pako = require('pako')
- *   , data = Uint8Array([1,2,3,4,5,6,7,8,9]);
- *
- * console.log(pako.deflate(data));
- * ```
- **/
-function deflate(input, options) {
-  var deflator = new Deflate(options);
+  if (typeof callback != 'function')
+    throw new Error('next() requires a callback argument')
 
-  deflator.push(input, true);
+  if (self._ended)
+    return callback(new Error('cannot call next() after end()'))
+  if (self._nexting)
+    return callback(new Error('cannot call next() before previous next() has completed'))
 
-  // That will never happens, if you don't cheat with options :)
-  if (deflator.err) { throw deflator.msg; }
+  self._nexting = true
+  if (typeof self._next == 'function') {
+    return self._next(function () {
+      self._nexting = false
+      callback.apply(null, arguments)
+    })
+  }
 
-  return deflator.result;
+  process.nextTick(function () {
+    self._nexting = false
+    callback()
+  })
 }
 
+AbstractIterator.prototype.end = function (callback) {
+  if (typeof callback != 'function')
+    throw new Error('end() requires a callback argument')
 
-/**
- * deflateRaw(data[, options]) -> Uint8Array|Array|String
- * - data (Uint8Array|Array|String): input data to compress.
- * - options (Object): zlib deflate options.
- *
- * The same as [[deflate]], but creates raw data, without wrapper
- * (header and adler32 crc).
- **/
-function deflateRaw(input, options) {
-  options = options || {};
-  options.raw = true;
-  return deflate(input, options);
+  if (this._ended)
+    return callback(new Error('end() already called on iterator'))
+
+  this._ended = true
+
+  if (typeof this._end == 'function')
+    return this._end(callback)
+
+  process.nextTick(callback)
 }
 
+module.exports = AbstractIterator
 
-/**
- * gzip(data[, options]) -> Uint8Array|Array|String
- * - data (Uint8Array|Array|String): input data to compress.
- * - options (Object): zlib deflate options.
- *
- * The same as [[deflate]], but create gzip wrapper instead of
- * deflate one.
- **/
-function gzip(input, options) {
-  options = options || {};
-  options.gzip = true;
-  return deflate(input, options);
+}).call(this,require('_process'))
+},{"_process":39}],5:[function(require,module,exports){
+(function (process,Buffer){
+/* Copyright (c) 2013 Rod Vagg, MIT License */
+
+var xtend                = require('xtend')
+  , AbstractIterator     = require('./abstract-iterator')
+  , AbstractChainedBatch = require('./abstract-chained-batch')
+
+function AbstractLevelDOWN (location) {
+  if (!arguments.length || location === undefined)
+    throw new Error('constructor requires at least a location argument')
+
+  if (typeof location != 'string')
+    throw new Error('constructor requires a location string argument')
+
+  this.location = location
 }
 
+AbstractLevelDOWN.prototype.open = function (options, callback) {
+  if (typeof options == 'function')
+    callback = options
 
-exports.Deflate = Deflate;
-exports.deflate = deflate;
-exports.deflateRaw = deflateRaw;
-exports.gzip = gzip;
+  if (typeof callback != 'function')
+    throw new Error('open() requires a callback argument')
 
-},{"./utils/common":4,"./utils/strings":5,"./zlib/deflate.js":9,"./zlib/messages":14,"./zlib/zstream":16}],3:[function(require,module,exports){
-'use strict';
+  if (typeof options != 'object')
+    options = {}
 
+  if (typeof this._open == 'function')
+    return this._open(options, callback)
 
-var zlib_inflate = require('./zlib/inflate.js');
-var utils = require('./utils/common');
-var strings = require('./utils/strings');
-var c = require('./zlib/constants');
-var msg = require('./zlib/messages');
-var zstream = require('./zlib/zstream');
-var gzheader = require('./zlib/gzheader');
+  process.nextTick(callback)
+}
 
-var toString = Object.prototype.toString;
+AbstractLevelDOWN.prototype.close = function (callback) {
+  if (typeof callback != 'function')
+    throw new Error('close() requires a callback argument')
 
-/**
- * class Inflate
- *
- * Generic JS-style wrapper for zlib calls. If you don't need
- * streaming behaviour - use more simple functions: [[inflate]]
- * and [[inflateRaw]].
- **/
+  if (typeof this._close == 'function')
+    return this._close(callback)
 
-/* internal
- * inflate.chunks -> Array
- *
- * Chunks of output data, if [[Inflate#onData]] not overriden.
- **/
+  process.nextTick(callback)
+}
 
-/**
- * Inflate.result -> Uint8Array|Array|String
- *
- * Uncompressed result, generated by default [[Inflate#onData]]
- * and [[Inflate#onEnd]] handlers. Filled after you push last chunk
- * (call [[Inflate#push]] with `Z_FINISH` / `true` param) or if you
- * push a chunk with explicit flush (call [[Inflate#push]] with
- * `Z_SYNC_FLUSH` param).
- **/
+AbstractLevelDOWN.prototype.get = function (key, options, callback) {
+  var err
 
-/**
- * Inflate.err -> Number
- *
- * Error code after inflate finished. 0 (Z_OK) on success.
- * Should be checked if broken data possible.
- **/
+  if (typeof options == 'function')
+    callback = options
 
-/**
- * Inflate.msg -> String
- *
- * Error message, if [[Inflate.err]] != 0
- **/
+  if (typeof callback != 'function')
+    throw new Error('get() requires a callback argument')
 
+  if (err = this._checkKeyValue(key, 'key', this._isBuffer))
+    return callback(err)
 
-/**
- * new Inflate(options)
- * - options (Object): zlib inflate options.
- *
- * Creates new inflator instance with specified params. Throws exception
- * on bad params. Supported options:
- *
- * - `windowBits`
- *
- * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
- * for more information on these.
- *
- * Additional options, for internal needs:
- *
- * - `chunkSize` - size of generated data chunks (16K by default)
- * - `raw` (Boolean) - do raw inflate
- * - `to` (String) - if equal to 'string', then result will be converted
- *   from utf8 to utf16 (javascript) string. When string output requested,
- *   chunk length can differ from `chunkSize`, depending on content.
- *
- * By default, when no options set, autodetect deflate/gzip data format via
- * wrapper header.
- *
- * ##### Example:
- *
- * ```javascript
- * var pako = require('pako')
- *   , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])
- *   , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);
- *
- * var inflate = new pako.Inflate({ level: 3});
- *
- * inflate.push(chunk1, false);
- * inflate.push(chunk2, true);  // true -> last chunk
- *
- * if (inflate.err) { throw new Error(inflate.err); }
- *
- * console.log(inflate.result);
- * ```
- **/
-var Inflate = function(options) {
+  if (!this._isBuffer(key))
+    key = String(key)
 
-  this.options = utils.assign({
-    chunkSize: 16384,
-    windowBits: 0,
-    to: ''
-  }, options || {});
+  if (typeof options != 'object')
+    options = {}
 
-  var opt = this.options;
+  if (typeof this._get == 'function')
+    return this._get(key, options, callback)
 
-  // Force window size for `raw` data, if not set directly,
-  // because we have no header for autodetect.
-  if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) {
-    opt.windowBits = -opt.windowBits;
-    if (opt.windowBits === 0) { opt.windowBits = -15; }
-  }
+  process.nextTick(function () { callback(new Error('NotFound')) })
+}
 
-  // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate
-  if ((opt.windowBits >= 0) && (opt.windowBits < 16) &&
-      !(options && options.windowBits)) {
-    opt.windowBits += 32;
-  }
+AbstractLevelDOWN.prototype.put = function (key, value, options, callback) {
+  var err
 
-  // Gzip header has no info about windows size, we can do autodetect only
-  // for deflate. So, if window size not set, force it to max when gzip possible
-  if ((opt.windowBits > 15) && (opt.windowBits < 48)) {
-    // bit 3 (16) -> gzipped data
-    // bit 4 (32) -> autodetect gzip/deflate
-    if ((opt.windowBits & 15) === 0) {
-      opt.windowBits |= 15;
-    }
-  }
+  if (typeof options == 'function')
+    callback = options
 
-  this.err    = 0;      // error code, if happens (0 = Z_OK)
-  this.msg    = '';     // error message
-  this.ended  = false;  // used to avoid multiple onEnd() calls
-  this.chunks = [];     // chunks of compressed data
+  if (typeof callback != 'function')
+    throw new Error('put() requires a callback argument')
 
-  this.strm   = new zstream();
-  this.strm.avail_out = 0;
+  if (err = this._checkKeyValue(key, 'key', this._isBuffer))
+    return callback(err)
 
-  var status  = zlib_inflate.inflateInit2(
-    this.strm,
-    opt.windowBits
-  );
+  if (err = this._checkKeyValue(value, 'value', this._isBuffer))
+    return callback(err)
 
-  if (status !== c.Z_OK) {
-    throw new Error(msg[status]);
-  }
+  if (!this._isBuffer(key))
+    key = String(key)
 
-  this.header = new gzheader();
+  // coerce value to string in node, don't touch it in browser
+  // (indexeddb can store any JS type)
+  if (!this._isBuffer(value) && !process.browser)
+    value = String(value)
 
-  zlib_inflate.inflateGetHeader(this.strm, this.header);
-};
+  if (typeof options != 'object')
+    options = {}
 
-/**
- * Inflate#push(data[, mode]) -> Boolean
- * - data (Uint8Array|Array|ArrayBuffer|String): input data
- * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
- *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` meansh Z_FINISH.
- *
- * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with
- * new output chunks. Returns `true` on success. The last data block must have
- * mode Z_FINISH (or `true`). That will flush internal pending buffers and call
- * [[Inflate#onEnd]]. For interim explicit flushes (without ending the stream) you
- * can use mode Z_SYNC_FLUSH, keeping the decompression context.
- *
- * On fail call [[Inflate#onEnd]] with error code and return false.
- *
- * We strongly recommend to use `Uint8Array` on input for best speed (output
- * format is detected automatically). Also, don't skip last param and always
- * use the same type in your code (boolean or number). That will improve JS speed.
- *
- * For regular `Array`-s make sure all elements are [0..255].
- *
- * ##### Example
- *
- * ```javascript
- * push(chunk, false); // push one of data chunks
- * ...
- * push(chunk, true);  // push last chunk
- * ```
- **/
-Inflate.prototype.push = function(data, mode) {
-  var strm = this.strm;
-  var chunkSize = this.options.chunkSize;
-  var status, _mode;
-  var next_out_utf8, tail, utf8str;
+  if (typeof this._put == 'function')
+    return this._put(key, value, options, callback)
 
-  if (this.ended) { return false; }
-  _mode = (mode === ~~mode) ? mode : ((mode === true) ? c.Z_FINISH : c.Z_NO_FLUSH);
+  process.nextTick(callback)
+}
 
-  // Convert data if needed
-  if (typeof data === 'string') {
-    // Only binary strings can be decompressed on practice
-    strm.input = strings.binstring2buf(data);
-  } else if (toString.call(data) === '[object ArrayBuffer]') {
-    strm.input = new Uint8Array(data);
-  } else {
-    strm.input = data;
-  }
+AbstractLevelDOWN.prototype.del = function (key, options, callback) {
+  var err
 
-  strm.next_in = 0;
-  strm.avail_in = strm.input.length;
+  if (typeof options == 'function')
+    callback = options
 
-  do {
-    if (strm.avail_out === 0) {
-      strm.output = new utils.Buf8(chunkSize);
-      strm.next_out = 0;
-      strm.avail_out = chunkSize;
-    }
+  if (typeof callback != 'function')
+    throw new Error('del() requires a callback argument')
 
-    status = zlib_inflate.inflate(strm, c.Z_NO_FLUSH);    /* no bad return value */
+  if (err = this._checkKeyValue(key, 'key', this._isBuffer))
+    return callback(err)
 
-    if (status !== c.Z_STREAM_END && status !== c.Z_OK) {
-      this.onEnd(status);
-      this.ended = true;
-      return false;
-    }
+  if (!this._isBuffer(key))
+    key = String(key)
 
-    if (strm.next_out) {
-      if (strm.avail_out === 0 || status === c.Z_STREAM_END || (strm.avail_in === 0 && (_mode === c.Z_FINISH || _mode === c.Z_SYNC_FLUSH))) {
+  if (typeof options != 'object')
+    options = {}
 
-        if (this.options.to === 'string') {
+  if (typeof this._del == 'function')
+    return this._del(key, options, callback)
 
-          next_out_utf8 = strings.utf8border(strm.output, strm.next_out);
+  process.nextTick(callback)
+}
 
-          tail = strm.next_out - next_out_utf8;
-          utf8str = strings.buf2string(strm.output, next_out_utf8);
+AbstractLevelDOWN.prototype.batch = function (array, options, callback) {
+  if (!arguments.length)
+    return this._chainedBatch()
 
-          // move tail
-          strm.next_out = tail;
-          strm.avail_out = chunkSize - tail;
-          if (tail) { utils.arraySet(strm.output, strm.output, next_out_utf8, tail, 0); }
+  if (typeof options == 'function')
+    callback = options
 
-          this.onData(utf8str);
+  if (typeof callback != 'function')
+    throw new Error('batch(array) requires a callback argument')
 
-        } else {
-          this.onData(utils.shrinkBuf(strm.output, strm.next_out));
-        }
-      }
-    }
-  } while ((strm.avail_in > 0) && status !== c.Z_STREAM_END);
+  if (!Array.isArray(array))
+    return callback(new Error('batch(array) requires an array argument'))
 
-  if (status === c.Z_STREAM_END) {
-    _mode = c.Z_FINISH;
-  }
+  if (typeof options != 'object')
+    options = {}
 
-  // Finalize on the last chunk.
-  if (_mode === c.Z_FINISH) {
-    status = zlib_inflate.inflateEnd(this.strm);
-    this.onEnd(status);
-    this.ended = true;
-    return status === c.Z_OK;
+  var i = 0
+    , l = array.length
+    , e
+    , err
+
+  for (; i < l; i++) {
+    e = array[i]
+    if (typeof e != 'object')
+      continue
+
+    if (err = this._checkKeyValue(e.type, 'type', this._isBuffer))
+      return callback(err)
+
+    if (err = this._checkKeyValue(e.key, 'key', this._isBuffer))
+      return callback(err)
+
+    if (e.type == 'put') {
+      if (err = this._checkKeyValue(e.value, 'value', this._isBuffer))
+        return callback(err)
+    }
   }
 
-  // callback interim results if Z_SYNC_FLUSH.
-  if (_mode === c.Z_SYNC_FLUSH) {
-    this.onEnd(c.Z_OK);
-    strm.avail_out = 0;
-    return true;
+  if (typeof this._batch == 'function')
+    return this._batch(array, options, callback)
+
+  process.nextTick(callback)
+}
+
+//TODO: remove from here, not a necessary primitive
+AbstractLevelDOWN.prototype.approximateSize = function (start, end, callback) {
+  if (   start == null
+      || end == null
+      || typeof start == 'function'
+      || typeof end == 'function') {
+    throw new Error('approximateSize() requires valid `start`, `end` and `callback` arguments')
   }
 
-  return true;
-};
+  if (typeof callback != 'function')
+    throw new Error('approximateSize() requires a callback argument')
 
+  if (!this._isBuffer(start))
+    start = String(start)
 
-/**
- * Inflate#onData(chunk) -> Void
- * - chunk (Uint8Array|Array|String): ouput data. Type of array depends
- *   on js engine support. When string output requested, each chunk
- *   will be string.
- *
- * By default, stores data blocks in `chunks[]` property and glue
- * those in `onEnd`. Override this handler, if you need another behaviour.
- **/
-Inflate.prototype.onData = function(chunk) {
-  this.chunks.push(chunk);
-};
+  if (!this._isBuffer(end))
+    end = String(end)
 
+  if (typeof this._approximateSize == 'function')
+    return this._approximateSize(start, end, callback)
 
-/**
- * Inflate#onEnd(status) -> Void
- * - status (Number): inflate status. 0 (Z_OK) on success,
- *   other if not.
- *
- * Called either after you tell inflate that the input stream is
- * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)
- * or if an error happened. By default - join collected chunks,
- * free memory and fill `results` / `err` properties.
- **/
-Inflate.prototype.onEnd = function(status) {
-  // On success - join
-  if (status === c.Z_OK) {
-    if (this.options.to === 'string') {
-      // Glue & convert here, until we teach pako to send
-      // utf8 alligned strings to onData
-      this.result = this.chunks.join('');
-    } else {
-      this.result = utils.flattenChunks(this.chunks);
-    }
-  }
-  this.chunks = [];
-  this.err = status;
-  this.msg = this.strm.msg;
-};
+  process.nextTick(function () {
+    callback(null, 0)
+  })
+}
 
+AbstractLevelDOWN.prototype._setupIteratorOptions = function (options) {
+  var self = this
 
-/**
- * inflate(data[, options]) -> Uint8Array|Array|String
- * - data (Uint8Array|Array|String): input data to decompress.
- * - options (Object): zlib inflate options.
- *
- * Decompress `data` with inflate/ungzip and `options`. Autodetect
- * format via wrapper header by default. That's why we don't provide
- * separate `ungzip` method.
- *
- * Supported options are:
- *
- * - windowBits
- *
- * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
- * for more information.
- *
- * Sugar (options):
- *
- * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify
- *   negative windowBits implicitly.
- * - `to` (String) - if equal to 'string', then result will be converted
- *   from utf8 to utf16 (javascript) string. When string output requested,
- *   chunk length can differ from `chunkSize`, depending on content.
- *
- *
- * ##### Example:
- *
- * ```javascript
- * var pako = require('pako')
- *   , input = pako.deflate([1,2,3,4,5,6,7,8,9])
- *   , output;
- *
- * try {
- *   output = pako.inflate(input);
- * } catch (err)
- *   console.log(err);
- * }
- * ```
- **/
-function inflate(input, options) {
-  var inflator = new Inflate(options);
+  options = xtend(options)
 
-  inflator.push(input, true);
+  ;[ 'start', 'end', 'gt', 'gte', 'lt', 'lte' ].forEach(function (o) {
+    if (options[o] && self._isBuffer(options[o]) && options[o].length === 0)
+      delete options[o]
+  })
 
-  // That will never happens, if you don't cheat with options :)
-  if (inflator.err) { throw inflator.msg; }
+  options.reverse = !!options.reverse
 
-  return inflator.result;
+  // fix `start` so it takes into account gt, gte, lt, lte as appropriate
+  if (options.reverse && options.lt)
+    options.start = options.lt
+  if (options.reverse && options.lte)
+    options.start = options.lte
+  if (!options.reverse && options.gt)
+    options.start = options.gt
+  if (!options.reverse && options.gte)
+    options.start = options.gte
+
+  if ((options.reverse && options.lt && !options.lte)
+    || (!options.reverse && options.gt && !options.gte))
+    options.exclusiveStart = true // start should *not* include matching key
+
+  return options
 }
 
+AbstractLevelDOWN.prototype.iterator = function (options) {
+  if (typeof options != 'object')
+    options = {}
 
-/**
- * inflateRaw(data[, options]) -> Uint8Array|Array|String
- * - data (Uint8Array|Array|String): input data to decompress.
- * - options (Object): zlib inflate options.
- *
- * The same as [[inflate]], but creates raw data, without wrapper
- * (header and adler32 crc).
- **/
-function inflateRaw(input, options) {
-  options = options || {};
-  options.raw = true;
-  return inflate(input, options);
+  options = this._setupIteratorOptions(options)
+
+  if (typeof this._iterator == 'function')
+    return this._iterator(options)
+
+  return new AbstractIterator(this)
 }
 
+AbstractLevelDOWN.prototype._chainedBatch = function () {
+  return new AbstractChainedBatch(this)
+}
 
-/**
- * ungzip(data[, options]) -> Uint8Array|Array|String
- * - data (Uint8Array|Array|String): input data to decompress.
- * - options (Object): zlib inflate options.
- *
- * Just shortcut to [[inflate]], because it autodetects format
- * by header.content. Done for convenience.
- **/
+AbstractLevelDOWN.prototype._isBuffer = function (obj) {
+  return Buffer.isBuffer(obj)
+}
 
+AbstractLevelDOWN.prototype._checkKeyValue = function (obj, type) {
 
-exports.Inflate = Inflate;
-exports.inflate = inflate;
-exports.inflateRaw = inflateRaw;
-exports.ungzip  = inflate;
+  if (obj === null || obj === undefined)
+    return new Error(type + ' cannot be `null` or `undefined`')
 
-},{"./utils/common":4,"./utils/strings":5,"./zlib/constants":7,"./zlib/gzheader":10,"./zlib/inflate.js":12,"./zlib/messages":14,"./zlib/zstream":16}],4:[function(require,module,exports){
-'use strict';
+  if (this._isBuffer(obj)) {
+    if (obj.length === 0)
+      return new Error(type + ' cannot be an empty Buffer')
+  } else if (String(obj) === '')
+    return new Error(type + ' cannot be an empty String')
+}
 
+module.exports.AbstractLevelDOWN    = AbstractLevelDOWN
+module.exports.AbstractIterator     = AbstractIterator
+module.exports.AbstractChainedBatch = AbstractChainedBatch
 
-var TYPED_OK =  (typeof Uint8Array !== 'undefined') &&
-                (typeof Uint16Array !== 'undefined') &&
-                (typeof Int32Array !== 'undefined');
+}).call(this,require('_process'),require("buffer").Buffer)
+},{"./abstract-chained-batch":3,"./abstract-iterator":4,"_process":39,"buffer":34,"xtend":6}],6:[function(require,module,exports){
+module.exports = extend
 
+function extend() {
+    var target = {}
 
-exports.assign = function (obj /*from1, from2, from3, ...*/) {
-  var sources = Array.prototype.slice.call(arguments, 1);
-  while (sources.length) {
-    var source = sources.shift();
-    if (!source) { continue; }
+    for (var i = 0; i < arguments.length; i++) {
+        var source = arguments[i]
 
-    if (typeof source !== 'object') {
-      throw new TypeError(source + 'must be non-object');
+        for (var key in source) {
+            if (source.hasOwnProperty(key)) {
+                target[key] = source[key]
+            }
+        }
     }
 
-    for (var p in source) {
-      if (source.hasOwnProperty(p)) {
-        obj[p] = source[p];
-      }
-    }
-  }
+    return target
+}
 
-  return obj;
-};
+},{}],7:[function(require,module,exports){
+/*global window:false, self:false, define:false, module:false */
 
+/**
+ * @license IDBWrapper - A cross-browser wrapper for IndexedDB
+ * Copyright (c) 2011 - 2013 Jens Arps
+ * http://jensarps.de/
+ *
+ * Licensed under the MIT (X11) license
+ */
 
-// reduce buffer size, avoiding mem copy
-exports.shrinkBuf = function (buf, size) {
-  if (buf.length === size) { return buf; }
-  if (buf.subarray) { return buf.subarray(0, size); }
-  buf.length = size;
-  return buf;
-};
+(function (name, definition, global) {
+  if (typeof define === 'function') {
+    define(definition);
+  } else if (typeof module !== 'undefined' && module.exports) {
+    module.exports = definition();
+  } else {
+    global[name] = definition();
+  }
+})('IDBStore', function () {
+
+  'use strict';
+
+  var defaultErrorHandler = function (error) {
+    throw error;
+  };
+
+  var defaults = {
+    storeName: 'Store',
+    storePrefix: 'IDBWrapper-',
+    dbVersion: 1,
+    keyPath: 'id',
+    autoIncrement: true,
+    onStoreReady: function () {
+    },
+    onError: defaultErrorHandler,
+    indexes: []
+  };
+
+  /**
+   *
+   * The IDBStore constructor
+   *
+   * @constructor
+   * @name IDBStore
+   * @version 1.4.1
+   *
+   * @param {Object} [kwArgs] An options object used to configure the store and
+   *  set callbacks
+   * @param {String} [kwArgs.storeName='Store'] The name of the store
+   * @param {String} [kwArgs.storePrefix='IDBWrapper-'] A prefix that is
+   *  internally used to construct the name of the database, which will be
+   *  kwArgs.storePrefix + kwArgs.storeName
+   * @param {Number} [kwArgs.dbVersion=1] The version of the store
+   * @param {String} [kwArgs.keyPath='id'] The key path to use. If you want to
+   *  setup IDBWrapper to work with out-of-line keys, you need to set this to
+   *  `null`
+   * @param {Boolean} [kwArgs.autoIncrement=true] If set to true, IDBStore will
+   *  automatically make sure a unique keyPath value is present on each object
+   *  that is stored.
+   * @param {Function} [kwArgs.onStoreReady] A callback to be called when the
+   *  store is ready to be used.
+   * @param {Function} [kwArgs.onError=throw] A callback to be called when an
+   *  error occurred during instantiation of the store.
+   * @param {Array} [kwArgs.indexes=[]] An array of indexData objects
+   *  defining the indexes to use with the store. For every index to be used
+   *  one indexData object needs to be passed in the array.
+   *  An indexData object is defined as follows:
+   * @param {Object} [kwArgs.indexes.indexData] An object defining the index to
+   *  use
+   * @param {String} kwArgs.indexes.indexData.name The name of the index
+   * @param {String} [kwArgs.indexes.indexData.keyPath] The key path of the index
+   * @param {Boolean} [kwArgs.indexes.indexData.unique] Whether the index is unique
+   * @param {Boolean} [kwArgs.indexes.indexData.multiEntry] Whether the index is multi entry
+   * @param {Function} [onStoreReady] A callback to be called when the store
+   * is ready to be used.
+   * @example
+      // create a store for customers with an additional index over the
+      // `lastname` property.
+      var myCustomerStore = new IDBStore({
+        dbVersion: 1,
+        storeName: 'customer-index',
+        keyPath: 'customerid',
+        autoIncrement: true,
+        onStoreReady: populateTable,
+        indexes: [
+          { name: 'lastname', keyPath: 'lastname', unique: false, multiEntry: false }
+        ]
+      });
+   * @example
+      // create a generic store
+      var myCustomerStore = new IDBStore({
+        storeName: 'my-data-store',
+        onStoreReady: function(){
+          // start working with the store.
+        }
+      });
+   */
+  var IDBStore = function (kwArgs, onStoreReady) {
 
+    if (typeof onStoreReady == 'undefined' && typeof kwArgs == 'function') {
+      onStoreReady = kwArgs;
+    }
+    if (Object.prototype.toString.call(kwArgs) != '[object Object]') {
+      kwArgs = {};
+    }
 
-var fnTyped = {
-  arraySet: function (dest, src, src_offs, len, dest_offs) {
-    if (src.subarray && dest.subarray) {
-      dest.set(src.subarray(src_offs, src_offs+len), dest_offs);
-      return;
+    for (var key in defaults) {
+      this[key] = typeof kwArgs[key] != 'undefined' ? kwArgs[key] : defaults[key];
     }
-    // Fallback to ordinary array
-    for (var i=0; i<len; i++) {
-      dest[dest_offs + i] = src[src_offs + i];
-    }
-  },
-  // Join array of chunks to single array.
-  flattenChunks: function(chunks) {
-    var i, l, len, pos, chunk, result;
 
-    // calculate data length
-    len = 0;
-    for (i=0, l=chunks.length; i<l; i++) {
-      len += chunks[i].length;
-    }
+    this.dbName = this.storePrefix + this.storeName;
+    this.dbVersion = parseInt(this.dbVersion, 10) || 1;
 
-    // join chunks
-    result = new Uint8Array(len);
-    pos = 0;
-    for (i=0, l=chunks.length; i<l; i++) {
-      chunk = chunks[i];
-      result.set(chunk, pos);
-      pos += chunk.length;
-    }
+    onStoreReady && (this.onStoreReady = onStoreReady);
 
-    return result;
-  }
-};
+    var env = typeof window == 'object' ? window : self;
+    this.idb = env.indexedDB || env.webkitIndexedDB || env.mozIndexedDB;
+    this.keyRange = env.IDBKeyRange || env.webkitIDBKeyRange || env.mozIDBKeyRange;
 
-var fnUntyped = {
-  arraySet: function (dest, src, src_offs, len, dest_offs) {
-    for (var i=0; i<len; i++) {
-      dest[dest_offs + i] = src[src_offs + i];
-    }
-  },
-  // Join array of chunks to single array.
-  flattenChunks: function(chunks) {
-    return [].concat.apply([], chunks);
-  }
-};
+    this.features = {
+      hasAutoIncrement: !env.mozIndexedDB
+    };
 
+    this.consts = {
+      'READ_ONLY':         'readonly',
+      'READ_WRITE':        'readwrite',
+      'VERSION_CHANGE':    'versionchange',
+      'NEXT':              'next',
+      'NEXT_NO_DUPLICATE': 'nextunique',
+      'PREV':              'prev',
+      'PREV_NO_DUPLICATE': 'prevunique'
+    };
 
-// Enable/Disable typed arrays use, for testing
-//
-exports.setTyped = function (on) {
-  if (on) {
-    exports.Buf8  = Uint8Array;
-    exports.Buf16 = Uint16Array;
-    exports.Buf32 = Int32Array;
-    exports.assign(exports, fnTyped);
-  } else {
-    exports.Buf8  = Array;
-    exports.Buf16 = Array;
-    exports.Buf32 = Array;
-    exports.assign(exports, fnUntyped);
-  }
-};
+    this.openDB();
+  };
 
-exports.setTyped(TYPED_OK);
+  IDBStore.prototype = /** @lends IDBStore */ {
 
-},{}],5:[function(require,module,exports){
-// String encode/decode helpers
-'use strict';
+    /**
+     * A pointer to the IDBStore ctor
+     *
+     * @type IDBStore
+     */
+    constructor: IDBStore,
 
+    /**
+     * The version of IDBStore
+     *
+     * @type String
+     */
+    version: '1.4.1',
 
-var utils = require('./common');
+    /**
+     * A reference to the IndexedDB object
+     *
+     * @type Object
+     */
+    db: null,
 
+    /**
+     * The full name of the IndexedDB used by IDBStore, composed of
+     * this.storePrefix + this.storeName
+     *
+     * @type String
+     */
+    dbName: null,
 
-// Quick check if we can use fast array to bin string conversion
-//
-// - apply(Array) can fail on Android 2.2
-// - apply(Uint8Array) can fail on iOS 5.1 Safary
-//
-var STR_APPLY_OK = true;
-var STR_APPLY_UIA_OK = true;
+    /**
+     * The version of the IndexedDB used by IDBStore
+     *
+     * @type Number
+     */
+    dbVersion: null,
 
-try { String.fromCharCode.apply(null, [0]); } catch(__) { STR_APPLY_OK = false; }
-try { String.fromCharCode.apply(null, new Uint8Array(1)); } catch(__) { STR_APPLY_UIA_OK = false; }
+    /**
+     * A reference to the objectStore used by IDBStore
+     *
+     * @type Object
+     */
+    store: null,
 
+    /**
+     * The store name
+     *
+     * @type String
+     */
+    storeName: null,
 
-// Table with utf8 lengths (calculated by first byte of sequence)
-// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,
-// because max possible codepoint is 0x10ffff
-var _utf8len = new utils.Buf8(256);
-for (var q=0; q<256; q++) {
-  _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1);
-}
-_utf8len[254]=_utf8len[254]=1; // Invalid sequence start
+    /**
+     * The key path
+     *
+     * @type String
+     */
+    keyPath: null,
 
+    /**
+     * Whether IDBStore uses autoIncrement
+     *
+     * @type Boolean
+     */
+    autoIncrement: null,
 
-// convert string to array (typed, when possible)
-exports.string2buf = function (str) {
-  var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;
+    /**
+     * The indexes used by IDBStore
+     *
+     * @type Array
+     */
+    indexes: null,
+
+    /**
+     * A hashmap of features of the used IDB implementation
+     *
+     * @type Object
+     * @proprty {Boolean} autoIncrement If the implementation supports
+     *  native auto increment
+     */
+    features: null,
 
-  // count binary size
-  for (m_pos = 0; m_pos < str_len; m_pos++) {
-    c = str.charCodeAt(m_pos);
-    if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {
-      c2 = str.charCodeAt(m_pos+1);
-      if ((c2 & 0xfc00) === 0xdc00) {
-        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
-        m_pos++;
-      }
-    }
-    buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;
-  }
+    /**
+     * The callback to be called when the store is ready to be used
+     *
+     * @type Function
+     */
+    onStoreReady: null,
 
-  // allocate buffer
-  buf = new utils.Buf8(buf_len);
+    /**
+     * The callback to be called if an error occurred during instantiation
+     * of the store
+     *
+     * @type Function
+     */
+    onError: null,
 
-  // convert
-  for (i=0, m_pos = 0; i < buf_len; m_pos++) {
-    c = str.charCodeAt(m_pos);
-    if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {
-      c2 = str.charCodeAt(m_pos+1);
-      if ((c2 & 0xfc00) === 0xdc00) {
-        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
-        m_pos++;
-      }
-    }
-    if (c < 0x80) {
-      /* one byte */
-      buf[i++] = c;
-    } else if (c < 0x800) {
-      /* two bytes */
-      buf[i++] = 0xC0 | (c >>> 6);
-      buf[i++] = 0x80 | (c & 0x3f);
-    } else if (c < 0x10000) {
-      /* three bytes */
-      buf[i++] = 0xE0 | (c >>> 12);
-      buf[i++] = 0x80 | (c >>> 6 & 0x3f);
-      buf[i++] = 0x80 | (c & 0x3f);
-    } else {
-      /* four bytes */
-      buf[i++] = 0xf0 | (c >>> 18);
-      buf[i++] = 0x80 | (c >>> 12 & 0x3f);
-      buf[i++] = 0x80 | (c >>> 6 & 0x3f);
-      buf[i++] = 0x80 | (c & 0x3f);
-    }
-  }
+    /**
+     * The internal insertID counter
+     *
+     * @type Number
+     * @private
+     */
+    _insertIdCount: 0,
+
+    /**
+     * Opens an IndexedDB; called by the constructor.
+     *
+     * Will check if versions match and compare provided index configuration
+     * with existing ones, and update indexes if necessary.
+     *
+     * Will call this.onStoreReady() if everything went well and the store
+     * is ready to use, and this.onError() is something went wrong.
+     *
+     * @private
+     *
+     */
+    openDB: function () {
 
-  return buf;
-};
+      var openRequest = this.idb.open(this.dbName, this.dbVersion);
+      var preventSuccessCallback = false;
 
-// Helper (used in 2 places)
-function buf2binstring(buf, len) {
-  // use fallback for big arrays to avoid stack overflow
-  if (len < 65537) {
-    if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) {
-      return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len));
-    }
-  }
+      openRequest.onerror = function (error) {
 
-  var result = '';
-  for (var i=0; i < len; i++) {
-    result += String.fromCharCode(buf[i]);
-  }
-  return result;
-}
+        var gotVersionErr = false;
+        if ('error' in error.target) {
+          gotVersionErr = error.target.error.name == 'VersionError';
+        } else if ('errorCode' in error.target) {
+          gotVersionErr = error.target.errorCode == 12;
+        }
 
+        if (gotVersionErr) {
+          this.onError(new Error('The version number provided is lower than the existing one.'));
+        } else {
+          this.onError(error);
+        }
+      }.bind(this);
 
-// Convert byte array to binary string
-exports.buf2binstring = function(buf) {
-  return buf2binstring(buf, buf.length);
-};
+      openRequest.onsuccess = function (event) {
 
+        if (preventSuccessCallback) {
+          return;
+        }
 
-// Convert binary string (typed, when possible)
-exports.binstring2buf = function(str) {
-  var buf = new utils.Buf8(str.length);
-  for (var i=0, len=buf.length; i < len; i++) {
-    buf[i] = str.charCodeAt(i);
-  }
-  return buf;
-};
+        if(this.db){
+          this.onStoreReady();
+          return;
+        }
 
+        this.db = event.target.result;
 
-// convert array to string
-exports.buf2string = function (buf, max) {
-  var i, out, c, c_len;
-  var len = max || buf.length;
+        if(typeof this.db.version == 'string'){
+          this.onError(new Error('The IndexedDB implementation in this browser is outdated. Please upgrade your browser.'));
+          return;
+        }
 
-  // Reserve max possible length (2 words per char)
-  // NB: by unknown reasons, Array is significantly faster for
-  //     String.fromCharCode.apply than Uint16Array.
-  var utf16buf = new Array(len*2);
+        if(!this.db.objectStoreNames.contains(this.storeName)){
+          // We should never ever get here.
+          // Lets notify the user anyway.
+          this.onError(new Error('Something is wrong with the IndexedDB implementation in this browser. Please upgrade your browser.'));
+          return;
+        }
 
-  for (out=0, i=0; i<len;) {
-    c = buf[i++];
-    // quick process ascii
-    if (c < 0x80) { utf16buf[out++] = c; continue; }
+        var emptyTransaction = this.db.transaction([this.storeName], this.consts.READ_ONLY);
+        this.store = emptyTransaction.objectStore(this.storeName);
 
-    c_len = _utf8len[c];
-    // skip 5 & 6 byte codes
-    if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len-1; continue; }
+        // check indexes
+        var existingIndexes = Array.prototype.slice.call(this.getIndexList());
+        this.indexes.forEach(function(indexData){
+          var indexName = indexData.name;
 
-    // apply mask on first byte
-    c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;
-    // join the rest
-    while (c_len > 1 && i < len) {
-      c = (c << 6) | (buf[i++] & 0x3f);
-      c_len--;
-    }
+          if(!indexName){
+            preventSuccessCallback = true;
+            this.onError(new Error('Cannot create index: No index name given.'));
+            return;
+          }
 
-    // terminated by end of string?
-    if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }
+          this.normalizeIndexData(indexData);
 
-    if (c < 0x10000) {
-      utf16buf[out++] = c;
-    } else {
-      c -= 0x10000;
-      utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);
-      utf16buf[out++] = 0xdc00 | (c & 0x3ff);
-    }
-  }
+          if(this.hasIndex(indexName)){
+            // check if it complies
+            var actualIndex = this.store.index(indexName);
+            var complies = this.indexComplies(actualIndex, indexData);
+            if(!complies){
+              preventSuccessCallback = true;
+              this.onError(new Error('Cannot modify index "' + indexName + '" for current version. Please bump version number to ' + ( this.dbVersion + 1 ) + '.'));
+            }
 
-  return buf2binstring(utf16buf, out);
-};
+            existingIndexes.splice(existingIndexes.indexOf(indexName), 1);
+          } else {
+            preventSuccessCallback = true;
+            this.onError(new Error('Cannot create new index "' + indexName + '" for current version. Please bump version number to ' + ( this.dbVersion + 1 ) + '.'));
+          }
 
+        }, this);
 
-// Calculate max possible position in utf8 buffer,
-// that will not break sequence. If that's not possible
-// - (very small limits) return max size as is.
-//
-// buf[] - utf8 bytes array
-// max   - length limit (mandatory);
-exports.utf8border = function(buf, max) {
-  var pos;
+        if (existingIndexes.length) {
+          preventSuccessCallback = true;
+          this.onError(new Error('Cannot delete index(es) "' + existingIndexes.toString() + '" for current version. Please bump version number to ' + ( this.dbVersion + 1 ) + '.'));
+        }
 
-  max = max || buf.length;
-  if (max > buf.length) { max = buf.length; }
+        preventSuccessCallback || this.onStoreReady();
+      }.bind(this);
 
-  // go back from last position, until start of sequence found
-  pos = max-1;
-  while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }
+      openRequest.onupgradeneeded = function(/* IDBVersionChangeEvent */ event){
 
-  // Fuckup - very small and broken sequence,
-  // return max, because we should return something anyway.
-  if (pos < 0) { return max; }
+        this.db = event.target.result;
 
-  // If we came to start of buffer - that means vuffer is too small,
-  // return max too.
-  if (pos === 0) { return max; }
+        if(this.db.objectStoreNames.contains(this.storeName)){
+          this.store = event.target.transaction.objectStore(this.storeName);
+        } else {
+          var optionalParameters = { autoIncrement: this.autoIncrement };
+          if (this.keyPath !== null) {
+            optionalParameters.keyPath = this.keyPath;
+          }
+          this.store = this.db.createObjectStore(this.storeName, optionalParameters);
+        }
 
-  return (pos + _utf8len[buf[pos]] > max) ? pos : max;
-};
+        var existingIndexes = Array.prototype.slice.call(this.getIndexList());
+        this.indexes.forEach(function(indexData){
+          var indexName = indexData.name;
 
-},{"./common":4}],6:[function(require,module,exports){
-'use strict';
+          if(!indexName){
+            preventSuccessCallback = true;
+            this.onError(new Error('Cannot create index: No index name given.'));
+          }
 
-// Note: adler32 takes 12% for level 0 and 2% for level 6.
-// It doesn't worth to make additional optimizationa as in original.
-// Small size is preferable.
+          this.normalizeIndexData(indexData);
 
-function adler32(adler, buf, len, pos) {
-  var s1 = (adler & 0xffff) |0,
-      s2 = ((adler >>> 16) & 0xffff) |0,
-      n = 0;
+          if(this.hasIndex(indexName)){
+            // check if it complies
+            var actualIndex = this.store.index(indexName);
+            var complies = this.indexComplies(actualIndex, indexData);
+            if(!complies){
+              // index differs, need to delete and re-create
+              this.store.deleteIndex(indexName);
+              this.store.createIndex(indexName, indexData.keyPath, { unique: indexData.unique, multiEntry: indexData.multiEntry });
+            }
 
-  while (len !== 0) {
-    // Set limit ~ twice less than 5552, to keep
-    // s2 in 31-bits, because we force signed ints.
-    // in other case %= will fail.
-    n = len > 2000 ? 2000 : len;
-    len -= n;
+            existingIndexes.splice(existingIndexes.indexOf(indexName), 1);
+          } else {
+            this.store.createIndex(indexName, indexData.keyPath, { unique: indexData.unique, multiEntry: indexData.multiEntry });
+          }
 
-    do {
-      s1 = (s1 + buf[pos++]) |0;
-      s2 = (s2 + s1) |0;
-    } while (--n);
+        }, this);
 
-    s1 %= 65521;
-    s2 %= 65521;
-  }
+        if (existingIndexes.length) {
+          existingIndexes.forEach(function(_indexName){
+            this.store.deleteIndex(_indexName);
+          }, this);
+        }
 
-  return (s1 | (s2 << 16)) |0;
-}
+      }.bind(this);
+    },
 
+    /**
+     * Deletes the database used for this store if the IDB implementations
+     * provides that functionality.
+     */
+    deleteDatabase: function () {
+      if (this.idb.deleteDatabase) {
+        this.idb.deleteDatabase(this.dbName);
+      }
+    },
+
+    /*********************
+     * data manipulation *
+     *********************/
+
+    /**
+     * Puts an object into the store. If an entry with the given id exists,
+     * it will be overwritten. This method has a different signature for inline
+     * keys and out-of-line keys; please see the examples below.
+     *
+     * @param {*} [key] The key to store. This is only needed if IDBWrapper
+     *  is set to use out-of-line keys. For inline keys - the default scenario -
+     *  this can be omitted.
+     * @param {Object} value The data object to store.
+     * @param {Function} [onSuccess] A callback that is called if insertion
+     *  was successful.
+     * @param {Function} [onError] A callback that is called if insertion
+     *  failed.
+     * @returns {IDBTransaction} The transaction used for this operation.
+     * @example
+        // Storing an object, using inline keys (the default scenario):
+        var myCustomer = {
+          customerid: 2346223,
+          lastname: 'Doe',
+          firstname: 'John'
+        };
+        myCustomerStore.put(myCustomer, mySuccessHandler, myErrorHandler);
+        // Note that passing success- and error-handlers is optional.
+     * @example
+        // Storing an object, using out-of-line keys:
+       var myCustomer = {
+         lastname: 'Doe',
+         firstname: 'John'
+       };
+       myCustomerStore.put(2346223, myCustomer, mySuccessHandler, myErrorHandler);
+      // Note that passing success- and error-handlers is optional.
+     */
+    put: function (key, value, onSuccess, onError) {
+      if (this.keyPath !== null) {
+        onError = onSuccess;
+        onSuccess = value;
+        value = key;
+      }
+      onError || (onError = defaultErrorHandler);
+      onSuccess || (onSuccess = noop);
+
+      var hasSuccess = false,
+          result = null,
+          putRequest;
+
+      var putTransaction = this.db.transaction([this.storeName], this.consts.READ_WRITE);
+      putTransaction.oncomplete = function () {
+        var callback = hasSuccess ? onSuccess : onError;
+        callback(result);
+      };
+      putTransaction.onabort = onError;
+      putTransaction.onerror = onError;
+
+      if (this.keyPath !== null) { // in-line keys
+        this._addIdPropertyIfNeeded(value);
+        putRequest = putTransaction.objectStore(this.storeName).put(value);
+      } else { // out-of-line keys
+        putRequest = putTransaction.objectStore(this.storeName).put(value, key);
+      }
+      putRequest.onsuccess = function (event) {
+        hasSuccess = true;
+        result = event.target.result;
+      };
+      putRequest.onerror = onError;
+
+      return putTransaction;
+    },
+
+    /**
+     * Retrieves an object from the store. If no entry exists with the given id,
+     * the success handler will be called with null as first and only argument.
+     *
+     * @param {*} key The id of the object to fetch.
+     * @param {Function} [onSuccess] A callback that is called if fetching
+     *  was successful. Will receive the object as only argument.
+     * @param {Function} [onError] A callback that will be called if an error
+     *  occurred during the operation.
+     * @returns {IDBTransaction} The transaction used for this operation.
+     */
+    get: function (key, onSuccess, onError) {
+      onError || (onError = defaultErrorHandler);
+      onSuccess || (onSuccess = noop);
+
+      var hasSuccess = false,
+          result = null;
+      
+      var getTransaction = this.db.transaction([this.storeName], this.consts.READ_ONLY);
+      getTransaction.oncomplete = function () {
+        var callback = hasSuccess ? onSuccess : onError;
+        callback(result);
+      };
+      getTransaction.onabort = onError;
+      getTransaction.onerror = onError;
+      var getRequest = getTransaction.objectStore(this.storeName).get(key);
+      getRequest.onsuccess = function (event) {
+        hasSuccess = true;
+        result = event.target.result;
+      };
+      getRequest.onerror = onError;
+
+      return getTransaction;
+    },
+
+    /**
+     * Removes an object from the store.
+     *
+     * @param {*} key The id of the object to remove.
+     * @param {Function} [onSuccess] A callback that is called if the removal
+     *  was successful.
+     * @param {Function} [onError] A callback that will be called if an error
+     *  occurred during the operation.
+     * @returns {IDBTransaction} The transaction used for this operation.
+     */
+    remove: function (key, onSuccess, onError) {
+      onError || (onError = defaultErrorHandler);
+      onSuccess || (onSuccess = noop);
+
+      var hasSuccess = false,
+          result = null;
+
+      var removeTransaction = this.db.transaction([this.storeName], this.consts.READ_WRITE);
+      removeTransaction.oncomplete = function () {
+        var callback = hasSuccess ? onSuccess : onError;
+        callback(result);
+      };
+      removeTransaction.onabort = onError;
+      removeTransaction.onerror = onError;
+
+      var deleteRequest = removeTransaction.objectStore(this.storeName)['delete'](key);
+      deleteRequest.onsuccess = function (event) {
+        hasSuccess = true;
+        result = event.target.result;
+      };
+      deleteRequest.onerror = onError;
+
+      return removeTransaction;
+    },
+
+    /**
+     * Runs a batch of put and/or remove operations on the store.
+     *
+     * @param {Array} dataArray An array of objects containing the operation to run
+     *  and the data object (for put operations).
+     * @param {Function} [onSuccess] A callback that is called if all operations
+     *  were successful.
+     * @param {Function} [onError] A callback that is called if an error
+     *  occurred during one of the operations.
+     * @returns {IDBTransaction} The transaction used for this operation.
+     */
+    batch: function (dataArray, onSuccess, onError) {
+      onError || (onError = defaultErrorHandler);
+      onSuccess || (onSuccess = noop);
 
-module.exports = adler32;
+      if(Object.prototype.toString.call(dataArray) != '[object Array]'){
+        onError(new Error('dataArray argument must be of type Array.'));
+      }
+      var batchTransaction = this.db.transaction([this.storeName] , this.consts.READ_WRITE);
+      batchTransaction.oncomplete = function () {
+        var callback = hasSuccess ? onSuccess : onError;
+        callback(hasSuccess);
+      };
+      batchTransaction.onabort = onError;
+      batchTransaction.onerror = onError;
+      
+      var count = dataArray.length;
+      var called = false;
+      var hasSuccess = false;
+
+      var onItemSuccess = function () {
+        count--;
+        if (count === 0 && !called) {
+          called = true;
+          hasSuccess = true;
+        }
+      };
+
+      dataArray.forEach(function (operation) {
+        var type = operation.type;
+        var key = operation.key;
+        var value = operation.value;
+
+        var onItemError = function (err) {
+          batchTransaction.abort();
+          if (!called) {
+            called = true;
+            onError(err, type, key);
+          }
+        };
+
+        if (type == 'remove') {
+          var deleteRequest = batchTransaction.objectStore(this.storeName)['delete'](key);
+          deleteRequest.onsuccess = onItemSuccess;
+          deleteRequest.onerror = onItemError;
+        } else if (type == 'put') {
+          var putRequest;
+          if (this.keyPath !== null) { // in-line keys
+            this._addIdPropertyIfNeeded(value);
+            putRequest = batchTransaction.objectStore(this.storeName).put(value);
+          } else { // out-of-line keys
+            putRequest = batchTransaction.objectStore(this.storeName).put(value, key);
+          }
+          putRequest.onsuccess = onItemSuccess;
+          putRequest.onerror = onItemError;
+        }
+      }, this);
+
+      return batchTransaction;
+    },
+
+    /**
+     * Takes an array of objects and stores them in a single transaction.
+     *
+     * @param {Array} dataArray An array of objects to store
+     * @param {Function} [onSuccess] A callback that is called if all operations
+     *  were successful.
+     * @param {Function} [onError] A callback that is called if an error
+     *  occurred during one of the operations.
+     * @returns {IDBTransaction} The transaction used for this operation.
+     */
+    putBatch: function (dataArray, onSuccess, onError) {
+      var batchData = dataArray.map(function(item){
+        return { type: 'put', value: item };
+      });
+
+      return this.batch(batchData, onSuccess, onError);
+    },
+
+    /**
+     * Takes an array of keys and removes matching objects in a single
+     * transaction.
+     *
+     * @param {Array} keyArray An array of keys to remove
+     * @param {Function} [onSuccess] A callback that is called if all operations
+     *  were successful.
+     * @param {Function} [onError] A callback that is called if an error
+     *  occurred during one of the operations.
+     * @returns {IDBTransaction} The transaction used for this operation.
+     */
+    removeBatch: function (keyArray, onSuccess, onError) {
+      var batchData = keyArray.map(function(key){
+        return { type: 'remove', key: key };
+      });
+
+      return this.batch(batchData, onSuccess, onError);
+    },
+
+    /**
+     * Takes an array of keys and fetches matching objects
+     *
+     * @param {Array} keyArray An array of keys identifying the objects to fetch
+     * @param {Function} [onSuccess] A callback that is called if all operations
+     *  were successful.
+     * @param {Function} [onError] A callback that is called if an error
+     *  occurred during one of the operations.
+     * @param {String} [arrayType='sparse'] The type of array to pass to the
+     *  success handler. May be one of 'sparse', 'dense' or 'skip'. Defaults to
+     *  'sparse'. This parameter specifies how to handle the situation if a get
+     *  operation did not throw an error, but there was no matching object in
+     *  the database. In most cases, 'sparse' provides the most desired
+     *  behavior. See the examples for details.
+     * @returns {IDBTransaction} The transaction used for this operation.
+     * @example
+     // given that there are two objects in the database with the keypath
+     // values 1 and 2, and the call looks like this:
+     myStore.getBatch([1, 5, 2], onError, function (data) { … }, arrayType);
+
+     // this is what the `data` array will be like:
+
+     // arrayType == 'sparse':
+     // data is a sparse array containing two entries and having a length of 3:
+       [Object, 2: Object]
+         0: Object
+         2: Object
+         length: 3
+         __proto__: Array[0]
+     // calling forEach on data will result in the callback being called two
+     // times, with the index parameter matching the index of the key in the
+     // keyArray.
+
+     // arrayType == 'dense':
+     // data is a dense array containing three entries and having a length of 3,
+     // where data[1] is of type undefined:
+       [Object, undefined, Object]
+         0: Object
+         1: undefined
+         2: Object
+         length: 3
+         __proto__: Array[0]
+     // calling forEach on data will result in the callback being called three
+     // times, with the index parameter matching the index of the key in the
+     // keyArray, but the second call will have undefined as first argument.
+
+     // arrayType == 'skip':
+     // data is a dense array containing two entries and having a length of 2:
+       [Object, Object]
+         0: Object
+         1: Object
+         length: 2
+         __proto__: Array[0]
+     // calling forEach on data will result in the callback being called two
+     // times, with the index parameter not matching the index of the key in the
+     // keyArray.
+     */
+    getBatch: function (keyArray, onSuccess, onError, arrayType) {
+      onError || (onError = defaultErrorHandler);
+      onSuccess || (onSuccess = noop);
+      arrayType || (arrayType = 'sparse');
 
-},{}],7:[function(require,module,exports){
-module.exports = {
+      if(Object.prototype.toString.call(keyArray) != '[object Array]'){
+        onError(new Error('keyArray argument must be of type Array.'));
+      }
+      var batchTransaction = this.db.transaction([this.storeName] , this.consts.READ_ONLY);
+      batchTransaction.oncomplete = function () {
+        var callback = hasSuccess ? onSuccess : onError;
+        callback(result);
+      };
+      batchTransaction.onabort = onError;
+      batchTransaction.onerror = onError;
+
+      var data = [];
+      var count = keyArray.length;
+      var called = false;
+      var hasSuccess = false;
+      var result = null;
+
+      var onItemSuccess = function (event) {
+        if (event.target.result || arrayType == 'dense') {
+          data.push(event.target.result);
+        } else if (arrayType == 'sparse') {
+          data.length++;
+        }
+        count--;
+        if (count === 0) {
+          called = true;
+          hasSuccess = true;
+          result = data;
+        }
+      };
+
+      keyArray.forEach(function (key) {
+
+        var onItemError = function (err) {
+          called = true;
+          result = err;
+          onError(err);
+          batchTransaction.abort();
+        };
+
+        var getRequest = batchTransaction.objectStore(this.storeName).get(key);
+        getRequest.onsuccess = onItemSuccess;
+        getRequest.onerror = onItemError;
+
+      }, this);
+
+      return batchTransaction;
+    },
+
+    /**
+     * Fetches all entries in the store.
+     *
+     * @param {Function} [onSuccess] A callback that is called if the operation
+     *  was successful. Will receive an array of objects.
+     * @param {Function} [onError] A callback that will be called if an error
+     *  occurred during the operation.
+     * @returns {IDBTransaction} The transaction used for this operation.
+     */
+    getAll: function (onSuccess, onError) {
+      onError || (onError = defaultErrorHandler);
+      onSuccess || (onSuccess = noop);
+      var getAllTransaction = this.db.transaction([this.storeName], this.consts.READ_ONLY);
+      var store = getAllTransaction.objectStore(this.storeName);
+      if (store.getAll) {
+        this._getAllNative(getAllTransaction, store, onSuccess, onError);
+      } else {
+        this._getAllCursor(getAllTransaction, store, onSuccess, onError);
+      }
 
-  /* Allowed flush values; see deflate() and inflate() below for details */
-  Z_NO_FLUSH:         0,
-  Z_PARTIAL_FLUSH:    1,
-  Z_SYNC_FLUSH:       2,
-  Z_FULL_FLUSH:       3,
-  Z_FINISH:           4,
-  Z_BLOCK:            5,
-  Z_TREES:            6,
+      return getAllTransaction;
+    },
+
+    /**
+     * Implements getAll for IDB implementations that have a non-standard
+     * getAll() method.
+     *
+     * @param {Object} getAllTransaction An open READ transaction.
+     * @param {Object} store A reference to the store.
+     * @param {Function} onSuccess A callback that will be called if the
+     *  operation was successful.
+     * @param {Function} onError A callback that will be called if an
+     *  error occurred during the operation.
+     * @private
+     */
+    _getAllNative: function (getAllTransaction, store, onSuccess, onError) {
+      var hasSuccess = false,
+          result = null;
+
+      getAllTransaction.oncomplete = function () {
+        var callback = hasSuccess ? onSuccess : onError;
+        callback(result);
+      };
+      getAllTransaction.onabort = onError;
+      getAllTransaction.onerror = onError;
+
+      var getAllRequest = store.getAll();
+      getAllRequest.onsuccess = function (event) {
+        hasSuccess = true;
+        result = event.target.result;
+      };
+      getAllRequest.onerror = onError;
+    },
+
+    /**
+     * Implements getAll for IDB implementations that do not have a getAll()
+     * method.
+     *
+     * @param {Object} getAllTransaction An open READ transaction.
+     * @param {Object} store A reference to the store.
+     * @param {Function} onSuccess A callback that will be called if the
+     *  operation was successful.
+     * @param {Function} onError A callback that will be called if an
+     *  error occurred during the operation.
+     * @private
+     */
+    _getAllCursor: function (getAllTransaction, store, onSuccess, onError) {
+      var all = [],
+          hasSuccess = false,
+          result = null;
+
+      getAllTransaction.oncomplete = function () {
+        var callback = hasSuccess ? onSuccess : onError;
+        callback(result);
+      };
+      getAllTransaction.onabort = onError;
+      getAllTransaction.onerror = onError;
+
+      var cursorRequest = store.openCursor();
+      cursorRequest.onsuccess = function (event) {
+        var cursor = event.target.result;
+        if (cursor) {
+          all.push(cursor.value);
+          cursor['continue']();
+        }
+        else {
+          hasSuccess = true;
+          result = all;
+        }
+      };
+      cursorRequest.onError = onError;
+    },
+
+    /**
+     * Clears the store, i.e. deletes all entries in the store.
+     *
+     * @param {Function} [onSuccess] A callback that will be called if the
+     *  operation was successful.
+     * @param {Function} [onError] A callback that will be called if an
+     *  error occurred during the operation.
+     * @returns {IDBTransaction} The transaction used for this operation.
+     */
+    clear: function (onSuccess, onError) {
+      onError || (onError = defaultErrorHandler);
+      onSuccess || (onSuccess = noop);
+
+      var hasSuccess = false,
+          result = null;
+
+      var clearTransaction = this.db.transaction([this.storeName], this.consts.READ_WRITE);
+      clearTransaction.oncomplete = function () {
+        var callback = hasSuccess ? onSuccess : onError;
+        callback(result);
+      };
+      clearTransaction.onabort = onError;
+      clearTransaction.onerror = onError;
+
+      var clearRequest = clearTransaction.objectStore(this.storeName).clear();
+      clearRequest.onsuccess = function (event) {
+        hasSuccess = true;
+        result = event.target.result;
+      };
+      clearRequest.onerror = onError;
+
+      return clearTransaction;
+    },
+
+    /**
+     * Checks if an id property needs to present on a object and adds one if
+     * necessary.
+     *
+     * @param {Object} dataObj The data object that is about to be stored
+     * @private
+     */
+    _addIdPropertyIfNeeded: function (dataObj) {
+      if (!this.features.hasAutoIncrement && typeof dataObj[this.keyPath] == 'undefined') {
+        dataObj[this.keyPath] = this._insertIdCount++ + Date.now();
+      }
+    },
 
-  /* Return codes for the compression/decompression functions. Negative values
-  * are errors, positive values are used for special but normal events.
-  */
-  Z_OK:               0,
-  Z_STREAM_END:       1,
-  Z_NEED_DICT:        2,
-  Z_ERRNO:           -1,
-  Z_STREAM_ERROR:    -2,
-  Z_DATA_ERROR:      -3,
-  //Z_MEM_ERROR:     -4,
-  Z_BUF_ERROR:       -5,
-  //Z_VERSION_ERROR: -6,
+    /************
+     * indexing *
+     ************/
 
-  /* compression levels */
-  Z_NO_COMPRESSION:         0,
-  Z_BEST_SPEED:             1,
-  Z_BEST_COMPRESSION:       9,
-  Z_DEFAULT_COMPRESSION:   -1,
+    /**
+     * Returns a DOMStringList of index names of the store.
+     *
+     * @return {DOMStringList} The list of index names
+     */
+    getIndexList: function () {
+      return this.store.indexNames;
+    },
+
+    /**
+     * Checks if an index with the given name exists in the store.
+     *
+     * @param {String} indexName The name of the index to look for
+     * @return {Boolean} Whether the store contains an index with the given name
+     */
+    hasIndex: function (indexName) {
+      return this.store.indexNames.contains(indexName);
+    },
+
+    /**
+     * Normalizes an object containing index data and assures that all
+     * properties are set.
+     *
+     * @param {Object} indexData The index data object to normalize
+     * @param {String} indexData.name The name of the index
+     * @param {String} [indexData.keyPath] The key path of the index
+     * @param {Boolean} [indexData.unique] Whether the index is unique
+     * @param {Boolean} [indexData.multiEntry] Whether the index is multi entry
+     */
+    normalizeIndexData: function (indexData) {
+      indexData.keyPath = indexData.keyPath || indexData.name;
+      indexData.unique = !!indexData.unique;
+      indexData.multiEntry = !!indexData.multiEntry;
+    },
+
+    /**
+     * Checks if an actual index complies with an expected index.
+     *
+     * @param {Object} actual The actual index found in the store
+     * @param {Object} expected An Object describing an expected index
+     * @return {Boolean} Whether both index definitions are identical
+     */
+    indexComplies: function (actual, expected) {
+      var complies = ['keyPath', 'unique', 'multiEntry'].every(function (key) {
+        // IE10 returns undefined for no multiEntry
+        if (key == 'multiEntry' && actual[key] === undefined && expected[key] === false) {
+          return true;
+        }
+        // Compound keys
+        if (key == 'keyPath' && Object.prototype.toString.call(expected[key]) == '[object Array]') {
+          var exp = expected.keyPath;
+          var act = actual.keyPath;
+
+          // IE10 can't handle keyPath sequences and stores them as a string.
+          // The index will be unusable there, but let's still return true if
+          // the keyPath sequence matches.
+          if (typeof act == 'string') {
+            return exp.toString() == act;
+          }
 
+          // Chrome/Opera stores keyPath squences as DOMStringList, Firefox
+          // as Array
+          if ( ! (typeof act.contains == 'function' || typeof act.indexOf == 'function') ) {
+            return false;
+          }
 
-  Z_FILTERED:               1,
-  Z_HUFFMAN_ONLY:           2,
-  Z_RLE:                    3,
-  Z_FIXED:                  4,
-  Z_DEFAULT_STRATEGY:       0,
+          if (act.length !== exp.length) {
+            return false;
+          }
 
-  /* Possible values of the data_type field (though see inflate()) */
-  Z_BINARY:                 0,
-  Z_TEXT:                   1,
-  //Z_ASCII:                1, // = Z_TEXT (deprecated)
-  Z_UNKNOWN:                2,
+          for (var i = 0, m = exp.length; i<m; i++) {
+            if ( ! ( (act.contains && act.contains(exp[i])) || act.indexOf(exp[i] !== -1) )) {
+              return false;
+            }
+          }
+          return true;
+        }
+        return expected[key] == actual[key];
+      });
+      return complies;
+    },
+
+    /**********
+     * cursor *
+     **********/
+
+    /**
+     * Iterates over the store using the given options and calling onItem
+     * for each entry matching the options.
+     *
+     * @param {Function} onItem A callback to be called for each match
+     * @param {Object} [options] An object defining specific options
+     * @param {Object} [options.index=null] An IDBIndex to operate on
+     * @param {String} [options.order=ASC] The order in which to provide the
+     *  results, can be 'DESC' or 'ASC'
+     * @param {Boolean} [options.autoContinue=true] Whether to automatically
+     *  iterate the cursor to the next result
+     * @param {Boolean} [options.filterDuplicates=false] Whether to exclude
+     *  duplicate matches
+     * @param {Object} [options.keyRange=null] An IDBKeyRange to use
+     * @param {Boolean} [options.writeAccess=false] Whether grant write access
+     *  to the store in the onItem callback
+     * @param {Function} [options.onEnd=null] A callback to be called after
+     *  iteration has ended
+     * @param {Function} [options.onError=throw] A callback to be called
+     *  if an error occurred during the operation.
+     * @returns {IDBTransaction} The transaction used for this operation.
+     */
+    iterate: function (onItem, options) {
+      options = mixin({
+        index: null,
+        order: 'ASC',
+        autoContinue: true,
+        filterDuplicates: false,
+        keyRange: null,
+        writeAccess: false,
+        onEnd: null,
+        onError: defaultErrorHandler
+      }, options || {});
+
+      var directionType = options.order.toLowerCase() == 'desc' ? 'PREV' : 'NEXT';
+      if (options.filterDuplicates) {
+        directionType += '_NO_DUPLICATE';
+      }
 
-  /* The deflate compression method */
-  Z_DEFLATED:               8
-  //Z_NULL:                 null // Use -1 or null inline, depending on var type
-};
+      var hasSuccess = false;
+      var cursorTransaction = this.db.transaction([this.storeName], this.consts[options.writeAccess ? 'READ_WRITE' : 'READ_ONLY']);
+      var cursorTarget = cursorTransaction.objectStore(this.storeName);
+      if (options.index) {
+        cursorTarget = cursorTarget.index(options.index);
+      }
 
-},{}],8:[function(require,module,exports){
-'use strict';
+      cursorTransaction.oncomplete = function () {
+        if (!hasSuccess) {
+          options.onError(null);
+          return;
+        }
+        if (options.onEnd) {
+          options.onEnd();
+        } else {
+          onItem(null);
+        }
+      };
+      cursorTransaction.onabort = options.onError;
+      cursorTransaction.onerror = options.onError;
+
+      var cursorRequest = cursorTarget.openCursor(options.keyRange, this.consts[directionType]);
+      cursorRequest.onerror = options.onError;
+      cursorRequest.onsuccess = function (event) {
+        var cursor = event.target.result;
+        if (cursor) {
+          onItem(cursor.value, cursor, cursorTransaction);
+          if (options.autoContinue) {
+            cursor['continue']();
+          }
+        } else {
+          hasSuccess = true;
+        }
+      };
+
+      return cursorTransaction;
+    },
+
+    /**
+     * Runs a query against the store and passes an array containing matched
+     * objects to the success handler.
+     *
+     * @param {Function} onSuccess A callback to be called when the operation
+     *  was successful.
+     * @param {Object} [options] An object defining specific query options
+     * @param {Object} [options.index=null] An IDBIndex to operate on
+     * @param {String} [options.order=ASC] The order in which to provide the
+     *  results, can be 'DESC' or 'ASC'
+     * @param {Boolean} [options.filterDuplicates=false] Whether to exclude
+     *  duplicate matches
+     * @param {Object} [options.keyRange=null] An IDBKeyRange to use
+     * @param {Function} [options.onError=throw] A callback to be called if an error
+     *  occurred during the operation.
+     * @returns {IDBTransaction} The transaction used for this operation.
+     */
+    query: function (onSuccess, options) {
+      var result = [];
+      options = options || {};
+      options.onEnd = function () {
+        onSuccess(result);
+      };
+      return this.iterate(function (item) {
+        result.push(item);
+      }, options);
+    },
+
+    /**
+     *
+     * Runs a query against the store, but only returns the number of matches
+     * instead of the matches itself.
+     *
+     * @param {Function} onSuccess A callback to be called if the opration
+     *  was successful.
+     * @param {Object} [options] An object defining specific options
+     * @param {Object} [options.index=null] An IDBIndex to operate on
+     * @param {Object} [options.keyRange=null] An IDBKeyRange to use
+     * @param {Function} [options.onError=throw] A callback to be called if an error
+     *  occurred during the operation.
+     * @returns {IDBTransaction} The transaction used for this operation.
+     */
+    count: function (onSuccess, options) {
 
-// Note: we can't get significant speed boost here.
-// So write code to minimize size - no pregenerated tables
-// and array tools dependencies.
+      options = mixin({
+        index: null,
+        keyRange: null
+      }, options || {});
 
+      var onError = options.onError || defaultErrorHandler;
 
-// Use ordinary array, since untyped makes no boost here
-function makeTable() {
-  var c, table = [];
+      var hasSuccess = false,
+          result = null;
+
+      var cursorTransaction = this.db.transaction([this.storeName], this.consts.READ_ONLY);
+      cursorTransaction.oncomplete = function () {
+        var callback = hasSuccess ? onSuccess : onError;
+        callback(result);
+      };
+      cursorTransaction.onabort = onError;
+      cursorTransaction.onerror = onError;
+
+      var cursorTarget = cursorTransaction.objectStore(this.storeName);
+      if (options.index) {
+        cursorTarget = cursorTarget.index(options.index);
+      }
+      var countRequest = cursorTarget.count(options.keyRange);
+      countRequest.onsuccess = function (evt) {
+        hasSuccess = true;
+        result = evt.target.result;
+      };
+      countRequest.onError = onError;
+
+      return cursorTransaction;
+    },
+
+    /**************/
+    /* key ranges */
+    /**************/
+
+    /**
+     * Creates a key range using specified options. This key range can be
+     * handed over to the count() and iterate() methods.
+     *
+     * Note: You must provide at least one or both of "lower" or "upper" value.
+     *
+     * @param {Object} options The options for the key range to create
+     * @param {*} [options.lower] The lower bound
+     * @param {Boolean} [options.excludeLower] Whether to exclude the lower
+     *  bound passed in options.lower from the key range
+     * @param {*} [options.upper] The upper bound
+     * @param {Boolean} [options.excludeUpper] Whether to exclude the upper
+     *  bound passed in options.upper from the key range
+     * @param {*} [options.only] A single key value. Use this if you need a key
+     *  range that only includes one value for a key. Providing this
+     *  property invalidates all other properties.
+     * @return {Object} The IDBKeyRange representing the specified options
+     */
+    makeKeyRange: function(options){
+      /*jshint onecase:true */
+      var keyRange,
+          hasLower = typeof options.lower != 'undefined',
+          hasUpper = typeof options.upper != 'undefined',
+          isOnly = typeof options.only != 'undefined';
+
+      switch(true){
+        case isOnly:
+          keyRange = this.keyRange.only(options.only);
+          break;
+        case hasLower && hasUpper:
+          keyRange = this.keyRange.bound(options.lower, options.upper, options.excludeLower, options.excludeUpper);
+          break;
+        case hasLower:
+          keyRange = this.keyRange.lowerBound(options.lower, options.excludeLower);
+          break;
+        case hasUpper:
+          keyRange = this.keyRange.upperBound(options.upper, options.excludeUpper);
+          break;
+        default:
+          throw new Error('Cannot create KeyRange. Provide one or both of "lower" or "upper" value, or an "only" value.');
+      }
+
+      return keyRange;
 
-  for (var n =0; n < 256; n++) {
-    c = n;
-    for (var k =0; k < 8; k++) {
-      c = ((c&1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
     }
-    table[n] = c;
-  }
 
-  return table;
-}
+  };
 
-// Create table on load. Just 255 signed longs. Not a problem.
-var crcTable = makeTable();
+  /** helpers **/
 
+  var noop = function () {
+  };
+  var empty = {};
+  var mixin = function (target, source) {
+    var name, s;
+    for (name in source) {
+      s = source[name];
+      if (s !== empty[name] && s !== target[name]) {
+        target[name] = s;
+      }
+    }
+    return target;
+  };
 
-function crc32(crc, buf, len, pos) {
-  var t = crcTable,
-      end = pos + len;
+  IDBStore.version = IDBStore.prototype.version;
 
-  crc = crc ^ (-1);
+  return IDBStore;
 
-  for (var i = pos; i < end; i++) {
-    crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
-  }
+}, this);
 
-  return (crc ^ (-1)); // >>> 0;
+},{}],8:[function(require,module,exports){
+var Buffer = require('buffer').Buffer;
+
+module.exports = isBuffer;
+
+function isBuffer (o) {
+  return Buffer.isBuffer(o)
+    || /\[object (.+Array|Array.+)\]/.test(Object.prototype.toString.call(o));
 }
 
+},{"buffer":34}],9:[function(require,module,exports){
+(function (Buffer){
 
-module.exports = crc32;
+exports.compare = function (a, b) {
 
-},{}],9:[function(require,module,exports){
-'use strict';
+  if(Buffer.isBuffer(a)) {
+    var l = Math.min(a.length, b.length)
+    for(var i = 0; i < l; i++) {
+      var cmp = a[i] - b[i]
+      if(cmp) return cmp
+    }
+    return a.length - b.length
+  }
 
-var utils   = require('../utils/common');
-var trees   = require('./trees');
-var adler32 = require('./adler32');
-var crc32   = require('./crc32');
-var msg   = require('./messages');
+  return a < b ? -1 : a > b ? 1 : 0
+}
 
-/* Public constants ==========================================================*/
-/* ===========================================================================*/
+function has(obj, key) {
+  return Object.hasOwnProperty.call(obj, key)
+}
 
+// to be compatible with the current abstract-leveldown tests
+// nullish or empty strings.
+// I could use !!val but I want to permit numbers and booleans,
+// if possible.
 
-/* Allowed flush values; see deflate() and inflate() below for details */
-var Z_NO_FLUSH      = 0;
-var Z_PARTIAL_FLUSH = 1;
-//var Z_SYNC_FLUSH    = 2;
-var Z_FULL_FLUSH    = 3;
-var Z_FINISH        = 4;
-var Z_BLOCK         = 5;
-//var Z_TREES         = 6;
+function isDef (val) {
+  return val !== undefined && val !== ''
+}
 
+function has (range, name) {
+  return Object.hasOwnProperty.call(range, name)
+}
 
-/* Return codes for the compression/decompression functions. Negative values
- * are errors, positive values are used for special but normal events.
- */
-var Z_OK            = 0;
-var Z_STREAM_END    = 1;
-//var Z_NEED_DICT     = 2;
-//var Z_ERRNO         = -1;
-var Z_STREAM_ERROR  = -2;
-var Z_DATA_ERROR    = -3;
-//var Z_MEM_ERROR     = -4;
-var Z_BUF_ERROR     = -5;
-//var Z_VERSION_ERROR = -6;
+function hasKey(range, name) {
+  return Object.hasOwnProperty.call(range, name) && name
+}
 
+var lowerBoundKey = exports.lowerBoundKey = function (range) {
+    return (
+       hasKey(range, 'gt')
+    || hasKey(range, 'gte')
+    || hasKey(range, 'min')
+    || (range.reverse ? hasKey(range, 'end') : hasKey(range, 'start'))
+    || undefined
+    )
+}
 
-/* compression levels */
-//var Z_NO_COMPRESSION      = 0;
-//var Z_BEST_SPEED          = 1;
-//var Z_BEST_COMPRESSION    = 9;
-var Z_DEFAULT_COMPRESSION = -1;
+var lowerBound = exports.lowerBound = function (range) {
+  var k = lowerBoundKey(range)
+  return k && range[k]
+  return (
+      has(range, 'gt')                      ? range.gt
+    : has(range, 'gte')                     ? range.gte
+    : has(range, 'min')                     ? range.min
+    : has(range, 'start') && !range.reverse ? range.start
+    : has(range, 'end')   && range.reverse  ? range.end
+    :                                         undefined
+  )
+}
 
+exports.lowerBoundInclusive = function (range) {
+  return has(range, 'gt') ? false : true
+}
 
-var Z_FILTERED            = 1;
-var Z_HUFFMAN_ONLY        = 2;
-var Z_RLE                 = 3;
-var Z_FIXED               = 4;
-var Z_DEFAULT_STRATEGY    = 0;
+exports.upperBoundInclusive =
+  function (range) {
+    return has(range, 'lt') || !range.minEx ? false : true
+  }
 
-/* Possible values of the data_type field (though see inflate()) */
-//var Z_BINARY              = 0;
-//var Z_TEXT                = 1;
-//var Z_ASCII               = 1; // = Z_TEXT
-var Z_UNKNOWN             = 2;
+var lowerBoundExclusive = exports.lowerBoundExclusive =
+  function (range) {
+    return has(range, 'gt') || range.minEx ? true : false
+  }
 
+var upperBoundExclusive = exports.upperBoundExclusive =
+  function (range) {
+    return has(range, 'lt') ? true : false
+  }
 
-/* The deflate compression method */
-var Z_DEFLATED  = 8;
+var upperBoundKey = exports.upperBoundKey = function (range) {
+    return (
+       hasKey(range, 'lt')
+    || hasKey(range, 'lte')
+    || hasKey(range, 'max')
+    || (range.reverse ? hasKey(range, 'start') : hasKey(range, 'end'))
+    || undefined
+    )
+}
 
-/*============================================================================*/
+var upperBound = exports.upperBound = function (range) {
+  var k = upperBoundKey(range)
+  return k && range[k]
+}
 
+function id (e) { return e }
 
-var MAX_MEM_LEVEL = 9;
-/* Maximum value for memLevel in deflateInit2 */
-var MAX_WBITS = 15;
-/* 32K LZ77 window */
-var DEF_MEM_LEVEL = 8;
+exports.toLtgt = function (range, _range, map, lower, upper) {
+  _range = _range || {}
+  map = map || id
+  var defaults = arguments.length > 3
+  var lb = exports.lowerBoundKey(range)
+  var ub = exports.upperBoundKey(range)
+  if(lb) {
+    if(lb === 'gt') _range.gt = map(range.gt)
+    else            _range.gte = map(range[lb])
+  }
+  else if(defaults)
+    _range.gte = lower
 
+  if(ub) {
+    if(ub === 'lt') _range.lt = map(range.lt)
+    else            _range.lte = map(range[ub])
+  }
+  else if(defaults)
+    _range.lte = upper
 
-var LENGTH_CODES  = 29;
-/* number of length codes, not counting the special END_BLOCK code */
-var LITERALS      = 256;
-/* number of literal bytes 0..255 */
-var L_CODES       = LITERALS + 1 + LENGTH_CODES;
-/* number of Literal or Length codes, including the END_BLOCK code */
-var D_CODES       = 30;
-/* number of distance codes */
-var BL_CODES      = 19;
-/* number of codes used to transfer the bit lengths */
-var HEAP_SIZE     = 2*L_CODES + 1;
-/* maximum heap size */
-var MAX_BITS  = 15;
-/* All codes must not exceed MAX_BITS bits */
+  _range.reverse = !!range.reverse
 
-var MIN_MATCH = 3;
-var MAX_MATCH = 258;
-var MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);
+  return _range
+}
 
-var PRESET_DICT = 0x20;
+exports.contains = function (range, key, compare) {
+  compare = compare || exports.compare
 
-var INIT_STATE = 42;
-var EXTRA_STATE = 69;
-var NAME_STATE = 73;
-var COMMENT_STATE = 91;
-var HCRC_STATE = 103;
-var BUSY_STATE = 113;
-var FINISH_STATE = 666;
+  var lb = lowerBound(range)
+  if(isDef(lb)) {
+    var cmp = compare(key, lb)
+    if(cmp < 0 || (cmp === 0 && lowerBoundExclusive(range)))
+      return false
+  }
 
-var BS_NEED_MORE      = 1; /* block not completed, need more input or more output */
-var BS_BLOCK_DONE     = 2; /* block flush performed */
-var BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */
-var BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */
+  var ub = upperBound(range)
+  if(isDef(ub)) {
+    var cmp = compare(key, ub)
+    if(cmp > 0 || (cmp === 0) && upperBoundExclusive(range))
+      return false
+  }
 
-var OS_CODE = 0x03; // Unix :) . Don't detect, use this default.
+  return true
+}
 
-function err(strm, errorCode) {
-  strm.msg = msg[errorCode];
-  return errorCode;
+exports.filter = function (range, compare) {
+  return function (key) {
+    return exports.contains(range, key, compare)
+  }
 }
 
-function rank(f) {
-  return ((f) << 1) - ((f) > 4 ? 9 : 0);
+}).call(this,require("buffer").Buffer)
+},{"buffer":34}],10:[function(require,module,exports){
+(function (Buffer){
+/**
+ * Convert a typed array to a Buffer without a copy
+ *
+ * Author:   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ * License:  MIT
+ *
+ * `npm install typedarray-to-buffer`
+ */
+
+module.exports = function (arr) {
+  if (typeof Buffer._augment === 'function' && Buffer.TYPED_ARRAY_SUPPORT) {
+    // If `Buffer` is from the `buffer` module and this browser supports typed arrays,
+    // then augment it with all the `Buffer` methods.
+    return Buffer._augment(arr)
+  } else {
+    // Otherwise, fallback to creating a `Buffer` with a copy.
+    return new Buffer(arr)
+  }
 }
 
-function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }
+}).call(this,require("buffer").Buffer)
+},{"buffer":34}],11:[function(require,module,exports){
+module.exports = hasKeys
 
+function hasKeys(source) {
+    return source !== null &&
+        (typeof source === "object" ||
+        typeof source === "function")
+}
 
-/* =========================================================================
- * Flush as much pending output as possible. All deflate() output goes
- * through this function so some applications may wish to modify it
- * to avoid allocating a large strm->output buffer and copying into it.
- * (See also read_buf()).
- */
-function flush_pending(strm) {
-  var s = strm.state;
-
-  //_tr_flush_bits(s);
-  var len = s.pending;
-  if (len > strm.avail_out) {
-    len = strm.avail_out;
-  }
-  if (len === 0) { return; }
+},{}],12:[function(require,module,exports){
+var Keys = require("object-keys")
+var hasKeys = require("./has-keys")
 
-  utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out);
-  strm.next_out += len;
-  s.pending_out += len;
-  strm.total_out += len;
-  strm.avail_out -= len;
-  s.pending -= len;
-  if (s.pending === 0) {
-    s.pending_out = 0;
-  }
-}
+module.exports = extend
 
+function extend() {
+    var target = {}
 
-function flush_block_only (s, last) {
-  trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);
-  s.block_start = s.strstart;
-  flush_pending(s.strm);
-}
+    for (var i = 0; i < arguments.length; i++) {
+        var source = arguments[i]
 
+        if (!hasKeys(source)) {
+            continue
+        }
 
-function put_byte(s, b) {
-  s.pending_buf[s.pending++] = b;
-}
+        var keys = Keys(source)
 
+        for (var j = 0; j < keys.length; j++) {
+            var name = keys[j]
+            target[name] = source[name]
+        }
+    }
 
-/* =========================================================================
- * Put a short in the pending buffer. The 16-bit value is put in MSB order.
- * IN assertion: the stream state is correct and there is enough room in
- * pending_buf.
- */
-function putShortMSB(s, b) {
-//  put_byte(s, (Byte)(b >> 8));
-//  put_byte(s, (Byte)(b & 0xff));
-  s.pending_buf[s.pending++] = (b >>> 8) & 0xff;
-  s.pending_buf[s.pending++] = b & 0xff;
+    return target
 }
 
+},{"./has-keys":11,"object-keys":14}],13:[function(require,module,exports){
+var hasOwn = Object.prototype.hasOwnProperty;
+var toString = Object.prototype.toString;
 
-/* ===========================================================================
- * Read a new buffer from the current input stream, update the adler32
- * and total number of bytes read.  All deflate() input goes through
- * this function so some applications may wish to modify it to avoid
- * allocating a large strm->input buffer and copying from it.
- * (See also flush_pending()).
- */
-function read_buf(strm, buf, start, size) {
-  var len = strm.avail_in;
+var isFunction = function (fn) {
+	var isFunc = (typeof fn === 'function' && !(fn instanceof RegExp)) || toString.call(fn) === '[object Function]';
+	if (!isFunc && typeof window !== 'undefined') {
+		isFunc = fn === window.setTimeout || fn === window.alert || fn === window.confirm || fn === window.prompt;
+	}
+	return isFunc;
+};
 
-  if (len > size) { len = size; }
-  if (len === 0) { return 0; }
+module.exports = function forEach(obj, fn) {
+	if (!isFunction(fn)) {
+		throw new TypeError('iterator must be a function');
+	}
+	var i, k,
+		isString = typeof obj === 'string',
+		l = obj.length,
+		context = arguments.length > 2 ? arguments[2] : null;
+	if (l === +l) {
+		for (i = 0; i < l; i++) {
+			if (context === null) {
+				fn(isString ? obj.charAt(i) : obj[i], i, obj);
+			} else {
+				fn.call(context, isString ? obj.charAt(i) : obj[i], i, obj);
+			}
+		}
+	} else {
+		for (k in obj) {
+			if (hasOwn.call(obj, k)) {
+				if (context === null) {
+					fn(obj[k], k, obj);
+				} else {
+					fn.call(context, obj[k], k, obj);
+				}
+			}
+		}
+	}
+};
 
-  strm.avail_in -= len;
 
-  utils.arraySet(buf, strm.input, strm.next_in, len, start);
-  if (strm.state.wrap === 1) {
-    strm.adler = adler32(strm.adler, buf, len, start);
-  }
+},{}],14:[function(require,module,exports){
+module.exports = Object.keys || require('./shim');
 
-  else if (strm.state.wrap === 2) {
-    strm.adler = crc32(strm.adler, buf, len, start);
-  }
 
-  strm.next_in += len;
-  strm.total_in += len;
+},{"./shim":16}],15:[function(require,module,exports){
+var toString = Object.prototype.toString;
 
-  return len;
-}
+module.exports = function isArguments(value) {
+	var str = toString.call(value);
+	var isArguments = str === '[object Arguments]';
+	if (!isArguments) {
+		isArguments = str !== '[object Array]'
+			&& value !== null
+			&& typeof value === 'object'
+			&& typeof value.length === 'number'
+			&& value.length >= 0
+			&& toString.call(value.callee) === '[object Function]';
+	}
+	return isArguments;
+};
 
 
-/* ===========================================================================
- * Set match_start to the longest match starting at the given string and
- * return its length. Matches shorter or equal to prev_length are discarded,
- * in which case the result is equal to prev_length and match_start is
- * garbage.
- * IN assertions: cur_match is the head of the hash chain for the current
- *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
- * OUT assertion: the match length is not greater than s->lookahead.
- */
-function longest_match(s, cur_match) {
-  var chain_length = s.max_chain_length;      /* max hash chain length */
-  var scan = s.strstart; /* current string */
-  var match;                       /* matched string */
-  var len;                           /* length of current match */
-  var best_len = s.prev_length;              /* best match length so far */
-  var nice_match = s.nice_match;             /* stop if match long enough */
-  var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?
-      s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;
+},{}],16:[function(require,module,exports){
+(function () {
+	"use strict";
+
+	// modified from https://github.com/kriskowal/es5-shim
+	var has = Object.prototype.hasOwnProperty,
+		toString = Object.prototype.toString,
+		forEach = require('./foreach'),
+		isArgs = require('./isArguments'),
+		hasDontEnumBug = !({'toString': null}).propertyIsEnumerable('toString'),
+		hasProtoEnumBug = (function () {}).propertyIsEnumerable('prototype'),
+		dontEnums = [
+			"toString",
+			"toLocaleString",
+			"valueOf",
+			"hasOwnProperty",
+			"isPrototypeOf",
+			"propertyIsEnumerable",
+			"constructor"
+		],
+		keysShim;
+
+	keysShim = function keys(object) {
+		var isObject = object !== null && typeof object === 'object',
+			isFunction = toString.call(object) === '[object Function]',
+			isArguments = isArgs(object),
+			theKeys = [];
+
+		if (!isObject && !isFunction && !isArguments) {
+			throw new TypeError("Object.keys called on a non-object");
+		}
 
-  var _win = s.window; // shortcut
+		if (isArguments) {
+			forEach(object, function (value) {
+				theKeys.push(value);
+			});
+		} else {
+			var name,
+				skipProto = hasProtoEnumBug && isFunction;
+
+			for (name in object) {
+				if (!(skipProto && name === 'prototype') && has.call(object, name)) {
+					theKeys.push(name);
+				}
+			}
+		}
 
-  var wmask = s.w_mask;
-  var prev  = s.prev;
+		if (hasDontEnumBug) {
+			var ctor = object.constructor,
+				skipConstructor = ctor && ctor.prototype === object;
 
-  /* Stop when cur_match becomes <= limit. To simplify the code,
-   * we prevent matches with the string of window index 0.
-   */
+			forEach(dontEnums, function (dontEnum) {
+				if (!(skipConstructor && dontEnum === 'constructor') && has.call(object, dontEnum)) {
+					theKeys.push(dontEnum);
+				}
+			});
+		}
+		return theKeys;
+	};
 
-  var strend = s.strstart + MAX_MATCH;
-  var scan_end1  = _win[scan + best_len - 1];
-  var scan_end   = _win[scan + best_len];
+	module.exports = keysShim;
+}());
 
-  /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
-   * It is easy to get rid of this optimization if necessary.
-   */
-  // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
 
-  /* Do not waste too much time if we already have a good match: */
-  if (s.prev_length >= s.good_match) {
-    chain_length >>= 2;
-  }
-  /* Do not look for matches beyond the end of the input. This is necessary
-   * to make deflate deterministic.
-   */
-  if (nice_match > s.lookahead) { nice_match = s.lookahead; }
+},{"./foreach":13,"./isArguments":15}],17:[function(require,module,exports){
+// Top level file is just a mixin of submodules & constants
+'use strict';
 
-  // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+var assign    = require('./lib/utils/common').assign;
 
-  do {
-    // Assert(cur_match < s->strstart, "no future");
-    match = cur_match;
+var deflate   = require('./lib/deflate');
+var inflate   = require('./lib/inflate');
+var constants = require('./lib/zlib/constants');
 
-    /* Skip to next match if the match length cannot increase
-     * or if the match length is less than 2.  Note that the checks below
-     * for insufficient lookahead only occur occasionally for performance
-     * reasons.  Therefore uninitialized memory will be accessed, and
-     * conditional jumps will be made that depend on those values.
-     * However the length of the match is limited to the lookahead, so
-     * the output of deflate is not affected by the uninitialized values.
-     */
+var pako = {};
 
-    if (_win[match + best_len]     !== scan_end  ||
-        _win[match + best_len - 1] !== scan_end1 ||
-        _win[match]                !== _win[scan] ||
-        _win[++match]              !== _win[scan + 1]) {
-      continue;
-    }
+assign(pako, deflate, inflate, constants);
 
-    /* The check at best_len-1 can be removed because it will be made
-     * again later. (This heuristic is not always a win.)
-     * It is not necessary to compare scan[2] and match[2] since they
-     * are always equal when the other bytes match, given that
-     * the hash keys are equal and that HASH_BITS >= 8.
-     */
-    scan += 2;
-    match++;
-    // Assert(*scan == *match, "match[2]?");
+module.exports = pako;
 
-    /* We check for insufficient lookahead only every 8th comparison;
-     * the 256th check will be made at strstart+258.
-     */
-    do {
-      /*jshint noempty:false*/
-    } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
-             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
-             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
-             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
-             scan < strend);
+},{"./lib/deflate":18,"./lib/inflate":19,"./lib/utils/common":20,"./lib/zlib/constants":23}],18:[function(require,module,exports){
+'use strict';
 
-    // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
 
-    len = MAX_MATCH - (strend - scan);
-    scan = strend - MAX_MATCH;
+var zlib_deflate = require('./zlib/deflate.js');
+var utils = require('./utils/common');
+var strings = require('./utils/strings');
+var msg = require('./zlib/messages');
+var zstream = require('./zlib/zstream');
 
-    if (len > best_len) {
-      s.match_start = cur_match;
-      best_len = len;
-      if (len >= nice_match) {
-        break;
-      }
-      scan_end1  = _win[scan + best_len - 1];
-      scan_end   = _win[scan + best_len];
-    }
-  } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);
+var toString = Object.prototype.toString;
 
-  if (best_len <= s.lookahead) {
-    return best_len;
-  }
-  return s.lookahead;
-}
+/* Public constants ==========================================================*/
+/* ===========================================================================*/
 
+var Z_NO_FLUSH      = 0;
+var Z_FINISH        = 4;
 
-/* ===========================================================================
- * Fill the window when the lookahead becomes insufficient.
- * Updates strstart and lookahead.
- *
- * IN assertion: lookahead < MIN_LOOKAHEAD
- * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
- *    At least one byte has been read, or avail_in == 0; reads are
- *    performed for at least two bytes (required for the zip translate_eol
- *    option -- not supported here).
- */
-function fill_window(s) {
-  var _w_size = s.w_size;
-  var p, n, m, more, str;
+var Z_OK            = 0;
+var Z_STREAM_END    = 1;
+var Z_SYNC_FLUSH    = 2;
 
-  //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");
+var Z_DEFAULT_COMPRESSION = -1;
 
-  do {
-    more = s.window_size - s.lookahead - s.strstart;
+var Z_DEFAULT_STRATEGY    = 0;
 
-    // JS ints have 32 bit, block below not needed
-    /* Deal with !@#$% 64K limit: */
-    //if (sizeof(int) <= 2) {
-    //    if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
-    //        more = wsize;
-    //
-    //  } else if (more == (unsigned)(-1)) {
-    //        /* Very unlikely, but possible on 16 bit machine if
-    //         * strstart == 0 && lookahead == 1 (input done a byte at time)
-    //         */
-    //        more--;
-    //    }
-    //}
+var Z_DEFLATED  = 8;
 
+/* ===========================================================================*/
 
-    /* If the window is almost full and there is insufficient lookahead,
-     * move the upper half to the lower one to make room in the upper half.
-     */
-    if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {
 
-      utils.arraySet(s.window, s.window, _w_size, _w_size, 0);
-      s.match_start -= _w_size;
-      s.strstart -= _w_size;
-      /* we now have strstart >= MAX_DIST */
-      s.block_start -= _w_size;
+/**
+ * class Deflate
+ *
+ * Generic JS-style wrapper for zlib calls. If you don't need
+ * streaming behaviour - use more simple functions: [[deflate]],
+ * [[deflateRaw]] and [[gzip]].
+ **/
 
-      /* Slide the hash table (could be avoided with 32 bit values
-       at the expense of memory usage). We slide even when level == 0
-       to keep the hash table consistent if we switch back to level > 0
-       later. (Using level 0 permanently is not an optimal usage of
-       zlib, so we don't care about this pathological case.)
-       */
-
-      n = s.hash_size;
-      p = n;
-      do {
-        m = s.head[--p];
-        s.head[p] = (m >= _w_size ? m - _w_size : 0);
-      } while (--n);
-
-      n = _w_size;
-      p = n;
-      do {
-        m = s.prev[--p];
-        s.prev[p] = (m >= _w_size ? m - _w_size : 0);
-        /* If n is not on any hash chain, prev[n] is garbage but
-         * its value will never be used.
-         */
-      } while (--n);
+/* internal
+ * Deflate.chunks -> Array
+ *
+ * Chunks of output data, if [[Deflate#onData]] not overriden.
+ **/
 
-      more += _w_size;
-    }
-    if (s.strm.avail_in === 0) {
-      break;
-    }
+/**
+ * Deflate.result -> Uint8Array|Array
+ *
+ * Compressed result, generated by default [[Deflate#onData]]
+ * and [[Deflate#onEnd]] handlers. Filled after you push last chunk
+ * (call [[Deflate#push]] with `Z_FINISH` / `true` param)  or if you
+ * push a chunk with explicit flush (call [[Deflate#push]] with
+ * `Z_SYNC_FLUSH` param).
+ **/
 
-    /* If there was no sliding:
-     *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
-     *    more == window_size - lookahead - strstart
-     * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
-     * => more >= window_size - 2*WSIZE + 2
-     * In the BIG_MEM or MMAP case (not yet supported),
-     *   window_size == input_size + MIN_LOOKAHEAD  &&
-     *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
-     * Otherwise, window_size == 2*WSIZE so more >= 2.
-     * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
-     */
-    //Assert(more >= 2, "more < 2");
-    n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);
-    s.lookahead += n;
+/**
+ * Deflate.err -> Number
+ *
+ * Error code after deflate finished. 0 (Z_OK) on success.
+ * You will not need it in real life, because deflate errors
+ * are possible only on wrong options or bad `onData` / `onEnd`
+ * custom handlers.
+ **/
 
-    /* Initialize the hash value now that we have some input: */
-    if (s.lookahead + s.insert >= MIN_MATCH) {
-      str = s.strstart - s.insert;
-      s.ins_h = s.window[str];
+/**
+ * Deflate.msg -> String
+ *
+ * Error message, if [[Deflate.err]] != 0
+ **/
 
-      /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */
-      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask;
-//#if MIN_MATCH != 3
-//        Call update_hash() MIN_MATCH-3 more times
-//#endif
-      while (s.insert) {
-        /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
-        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH-1]) & s.hash_mask;
 
-        s.prev[str & s.w_mask] = s.head[s.ins_h];
-        s.head[s.ins_h] = str;
-        str++;
-        s.insert--;
-        if (s.lookahead + s.insert < MIN_MATCH) {
-          break;
-        }
-      }
-    }
-    /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
-     * but this is not important since only literal bytes will be emitted.
-     */
+/**
+ * new Deflate(options)
+ * - options (Object): zlib deflate options.
+ *
+ * Creates new deflator instance with specified params. Throws exception
+ * on bad params. Supported options:
+ *
+ * - `level`
+ * - `windowBits`
+ * - `memLevel`
+ * - `strategy`
+ *
+ * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
+ * for more information on these.
+ *
+ * Additional options, for internal needs:
+ *
+ * - `chunkSize` - size of generated data chunks (16K by default)
+ * - `raw` (Boolean) - do raw deflate
+ * - `gzip` (Boolean) - create gzip wrapper
+ * - `to` (String) - if equal to 'string', then result will be "binary string"
+ *    (each char code [0..255])
+ * - `header` (Object) - custom header for gzip
+ *   - `text` (Boolean) - true if compressed data believed to be text
+ *   - `time` (Number) - modification time, unix timestamp
+ *   - `os` (Number) - operation system code
+ *   - `extra` (Array) - array of bytes with extra data (max 65536)
+ *   - `name` (String) - file name (binary string)
+ *   - `comment` (String) - comment (binary string)
+ *   - `hcrc` (Boolean) - true if header crc should be added
+ *
+ * ##### Example:
+ *
+ * ```javascript
+ * var pako = require('pako')
+ *   , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])
+ *   , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);
+ *
+ * var deflate = new pako.Deflate({ level: 3});
+ *
+ * deflate.push(chunk1, false);
+ * deflate.push(chunk2, true);  // true -> last chunk
+ *
+ * if (deflate.err) { throw new Error(deflate.err); }
+ *
+ * console.log(deflate.result);
+ * ```
+ **/
+var Deflate = function(options) {
 
-  } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);
+  this.options = utils.assign({
+    level: Z_DEFAULT_COMPRESSION,
+    method: Z_DEFLATED,
+    chunkSize: 16384,
+    windowBits: 15,
+    memLevel: 8,
+    strategy: Z_DEFAULT_STRATEGY,
+    to: ''
+  }, options || {});
 
-  /* If the WIN_INIT bytes after the end of the current data have never been
-   * written, then zero those bytes in order to avoid memory check reports of
-   * the use of uninitialized (or uninitialised as Julian writes) bytes by
-   * the longest match routines.  Update the high water mark for the next
-   * time through here.  WIN_INIT is set to MAX_MATCH since the longest match
-   * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
-   */
-//  if (s.high_water < s.window_size) {
-//    var curr = s.strstart + s.lookahead;
-//    var init = 0;
-//
-//    if (s.high_water < curr) {
-//      /* Previous high water mark below current data -- zero WIN_INIT
-//       * bytes or up to end of window, whichever is less.
-//       */
-//      init = s.window_size - curr;
-//      if (init > WIN_INIT)
-//        init = WIN_INIT;
-//      zmemzero(s->window + curr, (unsigned)init);
-//      s->high_water = curr + init;
-//    }
-//    else if (s->high_water < (ulg)curr + WIN_INIT) {
-//      /* High water mark at or above current data, but below current data
-//       * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
-//       * to end of window, whichever is less.
-//       */
-//      init = (ulg)curr + WIN_INIT - s->high_water;
-//      if (init > s->window_size - s->high_water)
-//        init = s->window_size - s->high_water;
-//      zmemzero(s->window + s->high_water, (unsigned)init);
-//      s->high_water += init;
-//    }
-//  }
-//
-//  Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
-//    "not enough room for search");
-}
+  var opt = this.options;
 
-/* ===========================================================================
- * Copy without compression as much as possible from the input stream, return
- * the current block state.
- * This function does not insert new strings in the dictionary since
- * uncompressible data is probably not useful. This function is used
- * only for the level=0 compression option.
- * NOTE: this function should be optimized to avoid extra copying from
- * window to pending_buf.
- */
-function deflate_stored(s, flush) {
-  /* Stored blocks are limited to 0xffff bytes, pending_buf is limited
-   * to pending_buf_size, and each stored block has a 5 byte header:
-   */
-  var max_block_size = 0xffff;
+  if (opt.raw && (opt.windowBits > 0)) {
+    opt.windowBits = -opt.windowBits;
+  }
 
-  if (max_block_size > s.pending_buf_size - 5) {
-    max_block_size = s.pending_buf_size - 5;
+  else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) {
+    opt.windowBits += 16;
   }
 
-  /* Copy as much as possible from input to output: */
-  for (;;) {
-    /* Fill the window as much as possible: */
-    if (s.lookahead <= 1) {
+  this.err    = 0;      // error code, if happens (0 = Z_OK)
+  this.msg    = '';     // error message
+  this.ended  = false;  // used to avoid multiple onEnd() calls
+  this.chunks = [];     // chunks of compressed data
 
-      //Assert(s->strstart < s->w_size+MAX_DIST(s) ||
-      //  s->block_start >= (long)s->w_size, "slide too late");
-//      if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) ||
-//        s.block_start >= s.w_size)) {
-//        throw  new Error("slide too late");
-//      }
+  this.strm = new zstream();
+  this.strm.avail_out = 0;
 
-      fill_window(s);
-      if (s.lookahead === 0 && flush === Z_NO_FLUSH) {
-        return BS_NEED_MORE;
-      }
+  var status = zlib_deflate.deflateInit2(
+    this.strm,
+    opt.level,
+    opt.method,
+    opt.windowBits,
+    opt.memLevel,
+    opt.strategy
+  );
 
-      if (s.lookahead === 0) {
-        break;
-      }
-      /* flush the current block */
-    }
-    //Assert(s->block_start >= 0L, "block gone");
-//    if (s.block_start < 0) throw new Error("block gone");
+  if (status !== Z_OK) {
+    throw new Error(msg[status]);
+  }
 
-    s.strstart += s.lookahead;
-    s.lookahead = 0;
+  if (opt.header) {
+    zlib_deflate.deflateSetHeader(this.strm, opt.header);
+  }
+};
 
-    /* Emit a stored block if pending_buf will be full: */
-    var max_start = s.block_start + max_block_size;
+/**
+ * Deflate#push(data[, mode]) -> Boolean
+ * - data (Uint8Array|Array|ArrayBuffer|String): input data. Strings will be
+ *   converted to utf8 byte sequence.
+ * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
+ *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` meansh Z_FINISH.
+ *
+ * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with
+ * new compressed chunks. Returns `true` on success. The last data block must have
+ * mode Z_FINISH (or `true`). That will flush internal pending buffers and call
+ * [[Deflate#onEnd]]. For interim explicit flushes (without ending the stream) you
+ * can use mode Z_SYNC_FLUSH, keeping the compression context.
+ *
+ * On fail call [[Deflate#onEnd]] with error code and return false.
+ *
+ * We strongly recommend to use `Uint8Array` on input for best speed (output
+ * array format is detected automatically). Also, don't skip last param and always
+ * use the same type in your code (boolean or number). That will improve JS speed.
+ *
+ * For regular `Array`-s make sure all elements are [0..255].
+ *
+ * ##### Example
+ *
+ * ```javascript
+ * push(chunk, false); // push one of data chunks
+ * ...
+ * push(chunk, true);  // push last chunk
+ * ```
+ **/
+Deflate.prototype.push = function(data, mode) {
+  var strm = this.strm;
+  var chunkSize = this.options.chunkSize;
+  var status, _mode;
 
-    if (s.strstart === 0 || s.strstart >= max_start) {
-      /* strstart == 0 is possible when wraparound on 16-bit machine */
-      s.lookahead = s.strstart - max_start;
-      s.strstart = max_start;
-      /*** FLUSH_BLOCK(s, 0); ***/
-      flush_block_only(s, false);
-      if (s.strm.avail_out === 0) {
-        return BS_NEED_MORE;
-      }
-      /***/
+  if (this.ended) { return false; }
 
+  _mode = (mode === ~~mode) ? mode : ((mode === true) ? Z_FINISH : Z_NO_FLUSH);
 
-    }
-    /* Flush if we may have to slide, otherwise block_start may become
-     * negative and the data will be gone:
-     */
-    if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) {
-      /*** FLUSH_BLOCK(s, 0); ***/
-      flush_block_only(s, false);
-      if (s.strm.avail_out === 0) {
-        return BS_NEED_MORE;
-      }
-      /***/
-    }
+  // Convert data if needed
+  if (typeof data === 'string') {
+    // If we need to compress text, change encoding to utf8.
+    strm.input = strings.string2buf(data);
+  } else if (toString.call(data) === '[object ArrayBuffer]') {
+    strm.input = new Uint8Array(data);
+  } else {
+    strm.input = data;
   }
 
-  s.insert = 0;
+  strm.next_in = 0;
+  strm.avail_in = strm.input.length;
 
-  if (flush === Z_FINISH) {
-    /*** FLUSH_BLOCK(s, 1); ***/
-    flush_block_only(s, true);
-    if (s.strm.avail_out === 0) {
-      return BS_FINISH_STARTED;
+  do {
+    if (strm.avail_out === 0) {
+      strm.output = new utils.Buf8(chunkSize);
+      strm.next_out = 0;
+      strm.avail_out = chunkSize;
     }
-    /***/
-    return BS_FINISH_DONE;
-  }
+    status = zlib_deflate.deflate(strm, _mode);    /* no bad return value */
 
-  if (s.strstart > s.block_start) {
-    /*** FLUSH_BLOCK(s, 0); ***/
-    flush_block_only(s, false);
-    if (s.strm.avail_out === 0) {
-      return BS_NEED_MORE;
+    if (status !== Z_STREAM_END && status !== Z_OK) {
+      this.onEnd(status);
+      this.ended = true;
+      return false;
     }
-    /***/
-  }
-
-  return BS_NEED_MORE;
-}
-
-/* ===========================================================================
- * Compress as much as possible from the input stream, return the current
- * block state.
- * This function does not perform lazy evaluation of matches and inserts
- * new strings in the dictionary only for unmatched strings or for short
- * matches. It is used only for the fast compression options.
- */
-function deflate_fast(s, flush) {
-  var hash_head;        /* head of the hash chain */
-  var bflush;           /* set if current block must be flushed */
-
-  for (;;) {
-    /* Make sure that we always have enough lookahead, except
-     * at the end of the input file. We need MAX_MATCH bytes
-     * for the next match, plus MIN_MATCH bytes to insert the
-     * string following the next match.
-     */
-    if (s.lookahead < MIN_LOOKAHEAD) {
-      fill_window(s);
-      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
-        return BS_NEED_MORE;
-      }
-      if (s.lookahead === 0) {
-        break; /* flush the current block */
+    if (strm.avail_out === 0 || (strm.avail_in === 0 && (_mode === Z_FINISH || _mode === Z_SYNC_FLUSH))) {
+      if (this.options.to === 'string') {
+        this.onData(strings.buf2binstring(utils.shrinkBuf(strm.output, strm.next_out)));
+      } else {
+        this.onData(utils.shrinkBuf(strm.output, strm.next_out));
       }
     }
+  } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== Z_STREAM_END);
 
-    /* Insert the string window[strstart .. strstart+2] in the
-     * dictionary, and set hash_head to the head of the hash chain:
-     */
-    hash_head = 0/*NIL*/;
-    if (s.lookahead >= MIN_MATCH) {
-      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
-      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
-      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
-      s.head[s.ins_h] = s.strstart;
-      /***/
-    }
+  // Finalize on the last chunk.
+  if (_mode === Z_FINISH) {
+    status = zlib_deflate.deflateEnd(this.strm);
+    this.onEnd(status);
+    this.ended = true;
+    return status === Z_OK;
+  }
 
-    /* Find the longest match, discarding those <= prev_length.
-     * At this point we have always match_length < MIN_MATCH
-     */
-    if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {
-      /* To simplify the code, we prevent matches with the string
-       * of window index 0 (in particular we have to avoid a match
-       * of the string with itself at the start of the input file).
-       */
-      s.match_length = longest_match(s, hash_head);
-      /* longest_match() sets match_start */
-    }
-    if (s.match_length >= MIN_MATCH) {
-      // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only
+  // callback interim results if Z_SYNC_FLUSH.
+  if (_mode === Z_SYNC_FLUSH) {
+    this.onEnd(Z_OK);
+    strm.avail_out = 0;
+    return true;
+  }
 
-      /*** _tr_tally_dist(s, s.strstart - s.match_start,
-                     s.match_length - MIN_MATCH, bflush); ***/
-      bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);
+  return true;
+};
 
-      s.lookahead -= s.match_length;
 
-      /* Insert new strings in the hash table only if the match length
-       * is not too large. This saves time but degrades compression.
-       */
-      if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {
-        s.match_length--; /* string at strstart already in table */
-        do {
-          s.strstart++;
-          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
-          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
-          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
-          s.head[s.ins_h] = s.strstart;
-          /***/
-          /* strstart never exceeds WSIZE-MAX_MATCH, so there are
-           * always MIN_MATCH bytes ahead.
-           */
-        } while (--s.match_length !== 0);
-        s.strstart++;
-      } else
-      {
-        s.strstart += s.match_length;
-        s.match_length = 0;
-        s.ins_h = s.window[s.strstart];
-        /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */
-        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask;
+/**
+ * Deflate#onData(chunk) -> Void
+ * - chunk (Uint8Array|Array|String): ouput data. Type of array depends
+ *   on js engine support. When string output requested, each chunk
+ *   will be string.
+ *
+ * By default, stores data blocks in `chunks[]` property and glue
+ * those in `onEnd`. Override this handler, if you need another behaviour.
+ **/
+Deflate.prototype.onData = function(chunk) {
+  this.chunks.push(chunk);
+};
 
-//#if MIN_MATCH != 3
-//                Call UPDATE_HASH() MIN_MATCH-3 more times
-//#endif
-        /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
-         * matter since it will be recomputed at next deflate call.
-         */
-      }
-    } else {
-      /* No match, output a literal byte */
-      //Tracevv((stderr,"%c", s.window[s.strstart]));
-      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
-      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
 
-      s.lookahead--;
-      s.strstart++;
-    }
-    if (bflush) {
-      /*** FLUSH_BLOCK(s, 0); ***/
-      flush_block_only(s, false);
-      if (s.strm.avail_out === 0) {
-        return BS_NEED_MORE;
-      }
-      /***/
-    }
-  }
-  s.insert = ((s.strstart < (MIN_MATCH-1)) ? s.strstart : MIN_MATCH-1);
-  if (flush === Z_FINISH) {
-    /*** FLUSH_BLOCK(s, 1); ***/
-    flush_block_only(s, true);
-    if (s.strm.avail_out === 0) {
-      return BS_FINISH_STARTED;
+/**
+ * Deflate#onEnd(status) -> Void
+ * - status (Number): deflate status. 0 (Z_OK) on success,
+ *   other if not.
+ *
+ * Called once after you tell deflate that the input stream is
+ * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)
+ * or if an error happened. By default - join collected chunks,
+ * free memory and fill `results` / `err` properties.
+ **/
+Deflate.prototype.onEnd = function(status) {
+  // On success - join
+  if (status === Z_OK) {
+    if (this.options.to === 'string') {
+      this.result = this.chunks.join('');
+    } else {
+      this.result = utils.flattenChunks(this.chunks);
     }
-    /***/
-    return BS_FINISH_DONE;
   }
-  if (s.last_lit) {
-    /*** FLUSH_BLOCK(s, 0); ***/
-    flush_block_only(s, false);
-    if (s.strm.avail_out === 0) {
-      return BS_NEED_MORE;
-    }
-    /***/
-  }
-  return BS_BLOCK_DONE;
-}
-
-/* ===========================================================================
- * Same as above, but achieves better compression. We use a lazy
- * evaluation for matches: a match is finally adopted only if there is
- * no better match at the next window position.
- */
-function deflate_slow(s, flush) {
-  var hash_head;          /* head of hash chain */
-  var bflush;              /* set if current block must be flushed */
+  this.chunks = [];
+  this.err = status;
+  this.msg = this.strm.msg;
+};
 
-  var max_insert;
 
-  /* Process the input block. */
-  for (;;) {
-    /* Make sure that we always have enough lookahead, except
-     * at the end of the input file. We need MAX_MATCH bytes
-     * for the next match, plus MIN_MATCH bytes to insert the
-     * string following the next match.
-     */
-    if (s.lookahead < MIN_LOOKAHEAD) {
-      fill_window(s);
-      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
-        return BS_NEED_MORE;
-      }
-      if (s.lookahead === 0) { break; } /* flush the current block */
-    }
+/**
+ * deflate(data[, options]) -> Uint8Array|Array|String
+ * - data (Uint8Array|Array|String): input data to compress.
+ * - options (Object): zlib deflate options.
+ *
+ * Compress `data` with deflate alrorythm and `options`.
+ *
+ * Supported options are:
+ *
+ * - level
+ * - windowBits
+ * - memLevel
+ * - strategy
+ *
+ * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
+ * for more information on these.
+ *
+ * Sugar (options):
+ *
+ * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify
+ *   negative windowBits implicitly.
+ * - `to` (String) - if equal to 'string', then result will be "binary string"
+ *    (each char code [0..255])
+ *
+ * ##### Example:
+ *
+ * ```javascript
+ * var pako = require('pako')
+ *   , data = Uint8Array([1,2,3,4,5,6,7,8,9]);
+ *
+ * console.log(pako.deflate(data));
+ * ```
+ **/
+function deflate(input, options) {
+  var deflator = new Deflate(options);
 
-    /* Insert the string window[strstart .. strstart+2] in the
-     * dictionary, and set hash_head to the head of the hash chain:
-     */
-    hash_head = 0/*NIL*/;
-    if (s.lookahead >= MIN_MATCH) {
-      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
-      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
-      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
-      s.head[s.ins_h] = s.strstart;
-      /***/
-    }
+  deflator.push(input, true);
 
-    /* Find the longest match, discarding those <= prev_length.
-     */
-    s.prev_length = s.match_length;
-    s.prev_match = s.match_start;
-    s.match_length = MIN_MATCH-1;
+  // That will never happens, if you don't cheat with options :)
+  if (deflator.err) { throw deflator.msg; }
 
-    if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&
-        s.strstart - hash_head <= (s.w_size-MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {
-      /* To simplify the code, we prevent matches with the string
-       * of window index 0 (in particular we have to avoid a match
-       * of the string with itself at the start of the input file).
-       */
-      s.match_length = longest_match(s, hash_head);
-      /* longest_match() sets match_start */
+  return deflator.result;
+}
 
-      if (s.match_length <= 5 &&
-         (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {
 
-        /* If prev_match is also MIN_MATCH, match_start is garbage
-         * but we will ignore the current match anyway.
-         */
-        s.match_length = MIN_MATCH-1;
-      }
-    }
-    /* If there was a match at the previous step and the current
-     * match is not better, output the previous match:
-     */
-    if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {
-      max_insert = s.strstart + s.lookahead - MIN_MATCH;
-      /* Do not insert strings in hash table beyond this. */
+/**
+ * deflateRaw(data[, options]) -> Uint8Array|Array|String
+ * - data (Uint8Array|Array|String): input data to compress.
+ * - options (Object): zlib deflate options.
+ *
+ * The same as [[deflate]], but creates raw data, without wrapper
+ * (header and adler32 crc).
+ **/
+function deflateRaw(input, options) {
+  options = options || {};
+  options.raw = true;
+  return deflate(input, options);
+}
 
-      //check_match(s, s.strstart-1, s.prev_match, s.prev_length);
 
-      /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,
-                     s.prev_length - MIN_MATCH, bflush);***/
-      bflush = trees._tr_tally(s, s.strstart - 1- s.prev_match, s.prev_length - MIN_MATCH);
-      /* Insert in hash table all strings up to the end of the match.
-       * strstart-1 and strstart are already inserted. If there is not
-       * enough lookahead, the last two strings are not inserted in
-       * the hash table.
-       */
-      s.lookahead -= s.prev_length-1;
-      s.prev_length -= 2;
-      do {
-        if (++s.strstart <= max_insert) {
-          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
-          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
-          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
-          s.head[s.ins_h] = s.strstart;
-          /***/
-        }
-      } while (--s.prev_length !== 0);
-      s.match_available = 0;
-      s.match_length = MIN_MATCH-1;
-      s.strstart++;
+/**
+ * gzip(data[, options]) -> Uint8Array|Array|String
+ * - data (Uint8Array|Array|String): input data to compress.
+ * - options (Object): zlib deflate options.
+ *
+ * The same as [[deflate]], but create gzip wrapper instead of
+ * deflate one.
+ **/
+function gzip(input, options) {
+  options = options || {};
+  options.gzip = true;
+  return deflate(input, options);
+}
 
-      if (bflush) {
-        /*** FLUSH_BLOCK(s, 0); ***/
-        flush_block_only(s, false);
-        if (s.strm.avail_out === 0) {
-          return BS_NEED_MORE;
-        }
-        /***/
-      }
 
-    } else if (s.match_available) {
-      /* If there was no match at the previous position, output a
-       * single literal. If there was a match but the current match
-       * is longer, truncate the previous match to a single literal.
-       */
-      //Tracevv((stderr,"%c", s->window[s->strstart-1]));
-      /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
-      bflush = trees._tr_tally(s, 0, s.window[s.strstart-1]);
+exports.Deflate = Deflate;
+exports.deflate = deflate;
+exports.deflateRaw = deflateRaw;
+exports.gzip = gzip;
 
-      if (bflush) {
-        /*** FLUSH_BLOCK_ONLY(s, 0) ***/
-        flush_block_only(s, false);
-        /***/
-      }
-      s.strstart++;
-      s.lookahead--;
-      if (s.strm.avail_out === 0) {
-        return BS_NEED_MORE;
-      }
-    } else {
-      /* There is no previous match to compare with, wait for
-       * the next step to decide.
-       */
-      s.match_available = 1;
-      s.strstart++;
-      s.lookahead--;
-    }
-  }
-  //Assert (flush != Z_NO_FLUSH, "no flush?");
-  if (s.match_available) {
-    //Tracevv((stderr,"%c", s->window[s->strstart-1]));
-    /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
-    bflush = trees._tr_tally(s, 0, s.window[s.strstart-1]);
+},{"./utils/common":20,"./utils/strings":21,"./zlib/deflate.js":25,"./zlib/messages":30,"./zlib/zstream":32}],19:[function(require,module,exports){
+'use strict';
 
-    s.match_available = 0;
-  }
-  s.insert = s.strstart < MIN_MATCH-1 ? s.strstart : MIN_MATCH-1;
-  if (flush === Z_FINISH) {
-    /*** FLUSH_BLOCK(s, 1); ***/
-    flush_block_only(s, true);
-    if (s.strm.avail_out === 0) {
-      return BS_FINISH_STARTED;
-    }
-    /***/
-    return BS_FINISH_DONE;
-  }
-  if (s.last_lit) {
-    /*** FLUSH_BLOCK(s, 0); ***/
-    flush_block_only(s, false);
-    if (s.strm.avail_out === 0) {
-      return BS_NEED_MORE;
-    }
-    /***/
-  }
 
-  return BS_BLOCK_DONE;
-}
+var zlib_inflate = require('./zlib/inflate.js');
+var utils = require('./utils/common');
+var strings = require('./utils/strings');
+var c = require('./zlib/constants');
+var msg = require('./zlib/messages');
+var zstream = require('./zlib/zstream');
+var gzheader = require('./zlib/gzheader');
 
+var toString = Object.prototype.toString;
 
-/* ===========================================================================
- * For Z_RLE, simply look for runs of bytes, generate matches only of distance
- * one.  Do not maintain a hash table.  (It will be regenerated if this run of
- * deflate switches away from Z_RLE.)
- */
-function deflate_rle(s, flush) {
-  var bflush;            /* set if current block must be flushed */
-  var prev;              /* byte at distance one to match */
-  var scan, strend;      /* scan goes up to strend for length of run */
+/**
+ * class Inflate
+ *
+ * Generic JS-style wrapper for zlib calls. If you don't need
+ * streaming behaviour - use more simple functions: [[inflate]]
+ * and [[inflateRaw]].
+ **/
 
-  var _win = s.window;
+/* internal
+ * inflate.chunks -> Array
+ *
+ * Chunks of output data, if [[Inflate#onData]] not overriden.
+ **/
 
-  for (;;) {
-    /* Make sure that we always have enough lookahead, except
-     * at the end of the input file. We need MAX_MATCH bytes
-     * for the longest run, plus one for the unrolled loop.
-     */
-    if (s.lookahead <= MAX_MATCH) {
-      fill_window(s);
-      if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) {
-        return BS_NEED_MORE;
-      }
-      if (s.lookahead === 0) { break; } /* flush the current block */
-    }
+/**
+ * Inflate.result -> Uint8Array|Array|String
+ *
+ * Uncompressed result, generated by default [[Inflate#onData]]
+ * and [[Inflate#onEnd]] handlers. Filled after you push last chunk
+ * (call [[Inflate#push]] with `Z_FINISH` / `true` param) or if you
+ * push a chunk with explicit flush (call [[Inflate#push]] with
+ * `Z_SYNC_FLUSH` param).
+ **/
 
-    /* See how many times the previous byte repeats */
-    s.match_length = 0;
-    if (s.lookahead >= MIN_MATCH && s.strstart > 0) {
-      scan = s.strstart - 1;
-      prev = _win[scan];
-      if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {
-        strend = s.strstart + MAX_MATCH;
-        do {
-          /*jshint noempty:false*/
-        } while (prev === _win[++scan] && prev === _win[++scan] &&
-                 prev === _win[++scan] && prev === _win[++scan] &&
-                 prev === _win[++scan] && prev === _win[++scan] &&
-                 prev === _win[++scan] && prev === _win[++scan] &&
-                 scan < strend);
-        s.match_length = MAX_MATCH - (strend - scan);
-        if (s.match_length > s.lookahead) {
-          s.match_length = s.lookahead;
-        }
-      }
-      //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
-    }
+/**
+ * Inflate.err -> Number
+ *
+ * Error code after inflate finished. 0 (Z_OK) on success.
+ * Should be checked if broken data possible.
+ **/
 
-    /* Emit match if have run of MIN_MATCH or longer, else emit literal */
-    if (s.match_length >= MIN_MATCH) {
-      //check_match(s, s.strstart, s.strstart - 1, s.match_length);
+/**
+ * Inflate.msg -> String
+ *
+ * Error message, if [[Inflate.err]] != 0
+ **/
 
-      /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/
-      bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH);
 
-      s.lookahead -= s.match_length;
-      s.strstart += s.match_length;
-      s.match_length = 0;
-    } else {
-      /* No match, output a literal byte */
-      //Tracevv((stderr,"%c", s->window[s->strstart]));
-      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
-      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
+/**
+ * new Inflate(options)
+ * - options (Object): zlib inflate options.
+ *
+ * Creates new inflator instance with specified params. Throws exception
+ * on bad params. Supported options:
+ *
+ * - `windowBits`
+ *
+ * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
+ * for more information on these.
+ *
+ * Additional options, for internal needs:
+ *
+ * - `chunkSize` - size of generated data chunks (16K by default)
+ * - `raw` (Boolean) - do raw inflate
+ * - `to` (String) - if equal to 'string', then result will be converted
+ *   from utf8 to utf16 (javascript) string. When string output requested,
+ *   chunk length can differ from `chunkSize`, depending on content.
+ *
+ * By default, when no options set, autodetect deflate/gzip data format via
+ * wrapper header.
+ *
+ * ##### Example:
+ *
+ * ```javascript
+ * var pako = require('pako')
+ *   , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])
+ *   , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);
+ *
+ * var inflate = new pako.Inflate({ level: 3});
+ *
+ * inflate.push(chunk1, false);
+ * inflate.push(chunk2, true);  // true -> last chunk
+ *
+ * if (inflate.err) { throw new Error(inflate.err); }
+ *
+ * console.log(inflate.result);
+ * ```
+ **/
+var Inflate = function(options) {
 
-      s.lookahead--;
-      s.strstart++;
-    }
-    if (bflush) {
-      /*** FLUSH_BLOCK(s, 0); ***/
-      flush_block_only(s, false);
-      if (s.strm.avail_out === 0) {
-        return BS_NEED_MORE;
-      }
-      /***/
-    }
+  this.options = utils.assign({
+    chunkSize: 16384,
+    windowBits: 0,
+    to: ''
+  }, options || {});
+
+  var opt = this.options;
+
+  // Force window size for `raw` data, if not set directly,
+  // because we have no header for autodetect.
+  if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) {
+    opt.windowBits = -opt.windowBits;
+    if (opt.windowBits === 0) { opt.windowBits = -15; }
   }
-  s.insert = 0;
-  if (flush === Z_FINISH) {
-    /*** FLUSH_BLOCK(s, 1); ***/
-    flush_block_only(s, true);
-    if (s.strm.avail_out === 0) {
-      return BS_FINISH_STARTED;
-    }
-    /***/
-    return BS_FINISH_DONE;
+
+  // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate
+  if ((opt.windowBits >= 0) && (opt.windowBits < 16) &&
+      !(options && options.windowBits)) {
+    opt.windowBits += 32;
   }
-  if (s.last_lit) {
-    /*** FLUSH_BLOCK(s, 0); ***/
-    flush_block_only(s, false);
-    if (s.strm.avail_out === 0) {
-      return BS_NEED_MORE;
+
+  // Gzip header has no info about windows size, we can do autodetect only
+  // for deflate. So, if window size not set, force it to max when gzip possible
+  if ((opt.windowBits > 15) && (opt.windowBits < 48)) {
+    // bit 3 (16) -> gzipped data
+    // bit 4 (32) -> autodetect gzip/deflate
+    if ((opt.windowBits & 15) === 0) {
+      opt.windowBits |= 15;
     }
-    /***/
   }
-  return BS_BLOCK_DONE;
-}
 
-/* ===========================================================================
- * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.
- * (It will be regenerated if this run of deflate switches away from Huffman.)
- */
-function deflate_huff(s, flush) {
-  var bflush;             /* set if current block must be flushed */
+  this.err    = 0;      // error code, if happens (0 = Z_OK)
+  this.msg    = '';     // error message
+  this.ended  = false;  // used to avoid multiple onEnd() calls
+  this.chunks = [];     // chunks of compressed data
 
-  for (;;) {
-    /* Make sure that we have a literal to write. */
-    if (s.lookahead === 0) {
-      fill_window(s);
-      if (s.lookahead === 0) {
-        if (flush === Z_NO_FLUSH) {
-          return BS_NEED_MORE;
-        }
-        break;      /* flush the current block */
-      }
-    }
+  this.strm   = new zstream();
+  this.strm.avail_out = 0;
 
-    /* Output a literal byte */
-    s.match_length = 0;
-    //Tracevv((stderr,"%c", s->window[s->strstart]));
-    /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
-    bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
-    s.lookahead--;
-    s.strstart++;
-    if (bflush) {
-      /*** FLUSH_BLOCK(s, 0); ***/
-      flush_block_only(s, false);
-      if (s.strm.avail_out === 0) {
-        return BS_NEED_MORE;
-      }
-      /***/
-    }
-  }
-  s.insert = 0;
-  if (flush === Z_FINISH) {
-    /*** FLUSH_BLOCK(s, 1); ***/
-    flush_block_only(s, true);
-    if (s.strm.avail_out === 0) {
-      return BS_FINISH_STARTED;
-    }
-    /***/
-    return BS_FINISH_DONE;
-  }
-  if (s.last_lit) {
-    /*** FLUSH_BLOCK(s, 0); ***/
-    flush_block_only(s, false);
-    if (s.strm.avail_out === 0) {
-      return BS_NEED_MORE;
-    }
-    /***/
-  }
-  return BS_BLOCK_DONE;
-}
+  var status  = zlib_inflate.inflateInit2(
+    this.strm,
+    opt.windowBits
+  );
 
-/* Values for max_lazy_match, good_match and max_chain_length, depending on
- * the desired pack level (0..9). The values given below have been tuned to
- * exclude worst case performance for pathological files. Better values may be
- * found for specific files.
- */
-var Config = function (good_length, max_lazy, nice_length, max_chain, func) {
-  this.good_length = good_length;
-  this.max_lazy = max_lazy;
-  this.nice_length = nice_length;
-  this.max_chain = max_chain;
-  this.func = func;
-};
+  if (status !== c.Z_OK) {
+    throw new Error(msg[status]);
+  }
 
-var configuration_table;
+  this.header = new gzheader();
 
-configuration_table = [
-  /*      good lazy nice chain */
-  new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */
-  new Config(4, 4, 8, 4, deflate_fast),            /* 1 max speed, no lazy matches */
-  new Config(4, 5, 16, 8, deflate_fast),           /* 2 */
-  new Config(4, 6, 32, 32, deflate_fast),          /* 3 */
+  zlib_inflate.inflateGetHeader(this.strm, this.header);
+};
 
-  new Config(4, 4, 16, 16, deflate_slow),          /* 4 lazy matches */
-  new Config(8, 16, 32, 32, deflate_slow),         /* 5 */
-  new Config(8, 16, 128, 128, deflate_slow),       /* 6 */
-  new Config(8, 32, 128, 256, deflate_slow),       /* 7 */
-  new Config(32, 128, 258, 1024, deflate_slow),    /* 8 */
-  new Config(32, 258, 258, 4096, deflate_slow)     /* 9 max compression */
-];
-
-
-/* ===========================================================================
- * Initialize the "longest match" routines for a new zlib stream
- */
-function lm_init(s) {
-  s.window_size = 2 * s.w_size;
-
-  /*** CLEAR_HASH(s); ***/
-  zero(s.head); // Fill with NIL (= 0);
-
-  /* Set the default configuration parameters:
-   */
-  s.max_lazy_match = configuration_table[s.level].max_lazy;
-  s.good_match = configuration_table[s.level].good_length;
-  s.nice_match = configuration_table[s.level].nice_length;
-  s.max_chain_length = configuration_table[s.level].max_chain;
-
-  s.strstart = 0;
-  s.block_start = 0;
-  s.lookahead = 0;
-  s.insert = 0;
-  s.match_length = s.prev_length = MIN_MATCH - 1;
-  s.match_available = 0;
-  s.ins_h = 0;
-}
+/**
+ * Inflate#push(data[, mode]) -> Boolean
+ * - data (Uint8Array|Array|ArrayBuffer|String): input data
+ * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
+ *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` meansh Z_FINISH.
+ *
+ * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with
+ * new output chunks. Returns `true` on success. The last data block must have
+ * mode Z_FINISH (or `true`). That will flush internal pending buffers and call
+ * [[Inflate#onEnd]]. For interim explicit flushes (without ending the stream) you
+ * can use mode Z_SYNC_FLUSH, keeping the decompression context.
+ *
+ * On fail call [[Inflate#onEnd]] with error code and return false.
+ *
+ * We strongly recommend to use `Uint8Array` on input for best speed (output
+ * format is detected automatically). Also, don't skip last param and always
+ * use the same type in your code (boolean or number). That will improve JS speed.
+ *
+ * For regular `Array`-s make sure all elements are [0..255].
+ *
+ * ##### Example
+ *
+ * ```javascript
+ * push(chunk, false); // push one of data chunks
+ * ...
+ * push(chunk, true);  // push last chunk
+ * ```
+ **/
+Inflate.prototype.push = function(data, mode) {
+  var strm = this.strm;
+  var chunkSize = this.options.chunkSize;
+  var status, _mode;
+  var next_out_utf8, tail, utf8str;
 
+  if (this.ended) { return false; }
+  _mode = (mode === ~~mode) ? mode : ((mode === true) ? c.Z_FINISH : c.Z_NO_FLUSH);
 
-function DeflateState() {
-  this.strm = null;            /* pointer back to this zlib stream */
-  this.status = 0;            /* as the name implies */
-  this.pending_buf = null;      /* output still pending */
-  this.pending_buf_size = 0;  /* size of pending_buf */
-  this.pending_out = 0;       /* next pending byte to output to the stream */
-  this.pending = 0;           /* nb of bytes in the pending buffer */
-  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
-  this.gzhead = null;         /* gzip header information to write */
-  this.gzindex = 0;           /* where in extra, name, or comment */
-  this.method = Z_DEFLATED; /* can only be DEFLATED */
-  this.last_flush = -1;   /* value of flush param for previous deflate call */
+  // Convert data if needed
+  if (typeof data === 'string') {
+    // Only binary strings can be decompressed on practice
+    strm.input = strings.binstring2buf(data);
+  } else if (toString.call(data) === '[object ArrayBuffer]') {
+    strm.input = new Uint8Array(data);
+  } else {
+    strm.input = data;
+  }
 
-  this.w_size = 0;  /* LZ77 window size (32K by default) */
-  this.w_bits = 0;  /* log2(w_size)  (8..16) */
-  this.w_mask = 0;  /* w_size - 1 */
+  strm.next_in = 0;
+  strm.avail_in = strm.input.length;
 
-  this.window = null;
-  /* Sliding window. Input bytes are read into the second half of the window,
-   * and move to the first half later to keep a dictionary of at least wSize
-   * bytes. With this organization, matches are limited to a distance of
-   * wSize-MAX_MATCH bytes, but this ensures that IO is always
-   * performed with a length multiple of the block size.
-   */
+  do {
+    if (strm.avail_out === 0) {
+      strm.output = new utils.Buf8(chunkSize);
+      strm.next_out = 0;
+      strm.avail_out = chunkSize;
+    }
 
-  this.window_size = 0;
-  /* Actual size of window: 2*wSize, except when the user input buffer
-   * is directly used as sliding window.
-   */
+    status = zlib_inflate.inflate(strm, c.Z_NO_FLUSH);    /* no bad return value */
 
-  this.prev = null;
-  /* Link to older string with same hash index. To limit the size of this
-   * array to 64K, this link is maintained only for the last 32K strings.
-   * An index in this array is thus a window index modulo 32K.
-   */
+    if (status !== c.Z_STREAM_END && status !== c.Z_OK) {
+      this.onEnd(status);
+      this.ended = true;
+      return false;
+    }
 
-  this.head = null;   /* Heads of the hash chains or NIL. */
+    if (strm.next_out) {
+      if (strm.avail_out === 0 || status === c.Z_STREAM_END || (strm.avail_in === 0 && (_mode === c.Z_FINISH || _mode === c.Z_SYNC_FLUSH))) {
 
-  this.ins_h = 0;       /* hash index of string to be inserted */
-  this.hash_size = 0;   /* number of elements in hash table */
-  this.hash_bits = 0;   /* log2(hash_size) */
-  this.hash_mask = 0;   /* hash_size-1 */
+        if (this.options.to === 'string') {
 
-  this.hash_shift = 0;
-  /* Number of bits by which ins_h must be shifted at each input
-   * step. It must be such that after MIN_MATCH steps, the oldest
-   * byte no longer takes part in the hash key, that is:
-   *   hash_shift * MIN_MATCH >= hash_bits
-   */
+          next_out_utf8 = strings.utf8border(strm.output, strm.next_out);
 
-  this.block_start = 0;
-  /* Window position at the beginning of the current output block. Gets
-   * negative when the window is moved backwards.
-   */
+          tail = strm.next_out - next_out_utf8;
+          utf8str = strings.buf2string(strm.output, next_out_utf8);
 
-  this.match_length = 0;      /* length of best match */
-  this.prev_match = 0;        /* previous match */
-  this.match_available = 0;   /* set if previous match exists */
-  this.strstart = 0;          /* start of string to insert */
-  this.match_start = 0;       /* start of matching string */
-  this.lookahead = 0;         /* number of valid bytes ahead in window */
+          // move tail
+          strm.next_out = tail;
+          strm.avail_out = chunkSize - tail;
+          if (tail) { utils.arraySet(strm.output, strm.output, next_out_utf8, tail, 0); }
 
-  this.prev_length = 0;
-  /* Length of the best match at previous step. Matches not greater than this
-   * are discarded. This is used in the lazy match evaluation.
-   */
+          this.onData(utf8str);
 
-  this.max_chain_length = 0;
-  /* To speed up deflation, hash chains are never searched beyond this
-   * length.  A higher limit improves compression ratio but degrades the
-   * speed.
-   */
+        } else {
+          this.onData(utils.shrinkBuf(strm.output, strm.next_out));
+        }
+      }
+    }
+  } while ((strm.avail_in > 0) && status !== c.Z_STREAM_END);
 
-  this.max_lazy_match = 0;
-  /* Attempt to find a better match only when the current match is strictly
-   * smaller than this value. This mechanism is used only for compression
-   * levels >= 4.
-   */
-  // That's alias to max_lazy_match, don't use directly
-  //this.max_insert_length = 0;
-  /* Insert new strings in the hash table only if the match length is not
-   * greater than this length. This saves time but degrades compression.
-   * max_insert_length is used only for compression levels <= 3.
-   */
+  if (status === c.Z_STREAM_END) {
+    _mode = c.Z_FINISH;
+  }
 
-  this.level = 0;     /* compression level (1..9) */
-  this.strategy = 0;  /* favor or force Huffman coding*/
+  // Finalize on the last chunk.
+  if (_mode === c.Z_FINISH) {
+    status = zlib_inflate.inflateEnd(this.strm);
+    this.onEnd(status);
+    this.ended = true;
+    return status === c.Z_OK;
+  }
 
-  this.good_match = 0;
-  /* Use a faster search when the previous match is longer than this */
+  // callback interim results if Z_SYNC_FLUSH.
+  if (_mode === c.Z_SYNC_FLUSH) {
+    this.onEnd(c.Z_OK);
+    strm.avail_out = 0;
+    return true;
+  }
 
-  this.nice_match = 0; /* Stop searching when current match exceeds this */
+  return true;
+};
 
-              /* used by trees.c: */
 
-  /* Didn't use ct_data typedef below to suppress compiler warning */
+/**
+ * Inflate#onData(chunk) -> Void
+ * - chunk (Uint8Array|Array|String): ouput data. Type of array depends
+ *   on js engine support. When string output requested, each chunk
+ *   will be string.
+ *
+ * By default, stores data blocks in `chunks[]` property and glue
+ * those in `onEnd`. Override this handler, if you need another behaviour.
+ **/
+Inflate.prototype.onData = function(chunk) {
+  this.chunks.push(chunk);
+};
 
-  // struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
-  // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
-  // struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */
 
-  // Use flat array of DOUBLE size, with interleaved fata,
-  // because JS does not support effective
-  this.dyn_ltree  = new utils.Buf16(HEAP_SIZE * 2);
-  this.dyn_dtree  = new utils.Buf16((2*D_CODES+1) * 2);
-  this.bl_tree    = new utils.Buf16((2*BL_CODES+1) * 2);
-  zero(this.dyn_ltree);
-  zero(this.dyn_dtree);
-  zero(this.bl_tree);
+/**
+ * Inflate#onEnd(status) -> Void
+ * - status (Number): inflate status. 0 (Z_OK) on success,
+ *   other if not.
+ *
+ * Called either after you tell inflate that the input stream is
+ * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)
+ * or if an error happened. By default - join collected chunks,
+ * free memory and fill `results` / `err` properties.
+ **/
+Inflate.prototype.onEnd = function(status) {
+  // On success - join
+  if (status === c.Z_OK) {
+    if (this.options.to === 'string') {
+      // Glue & convert here, until we teach pako to send
+      // utf8 alligned strings to onData
+      this.result = this.chunks.join('');
+    } else {
+      this.result = utils.flattenChunks(this.chunks);
+    }
+  }
+  this.chunks = [];
+  this.err = status;
+  this.msg = this.strm.msg;
+};
 
-  this.l_desc   = null;         /* desc. for literal tree */
-  this.d_desc   = null;         /* desc. for distance tree */
-  this.bl_desc  = null;         /* desc. for bit length tree */
 
-  //ush bl_count[MAX_BITS+1];
-  this.bl_count = new utils.Buf16(MAX_BITS+1);
-  /* number of codes at each bit length for an optimal tree */
-
-  //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
-  this.heap = new utils.Buf16(2*L_CODES+1);  /* heap used to build the Huffman trees */
-  zero(this.heap);
+/**
+ * inflate(data[, options]) -> Uint8Array|Array|String
+ * - data (Uint8Array|Array|String): input data to decompress.
+ * - options (Object): zlib inflate options.
+ *
+ * Decompress `data` with inflate/ungzip and `options`. Autodetect
+ * format via wrapper header by default. That's why we don't provide
+ * separate `ungzip` method.
+ *
+ * Supported options are:
+ *
+ * - windowBits
+ *
+ * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
+ * for more information.
+ *
+ * Sugar (options):
+ *
+ * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify
+ *   negative windowBits implicitly.
+ * - `to` (String) - if equal to 'string', then result will be converted
+ *   from utf8 to utf16 (javascript) string. When string output requested,
+ *   chunk length can differ from `chunkSize`, depending on content.
+ *
+ *
+ * ##### Example:
+ *
+ * ```javascript
+ * var pako = require('pako')
+ *   , input = pako.deflate([1,2,3,4,5,6,7,8,9])
+ *   , output;
+ *
+ * try {
+ *   output = pako.inflate(input);
+ * } catch (err)
+ *   console.log(err);
+ * }
+ * ```
+ **/
+function inflate(input, options) {
+  var inflator = new Inflate(options);
 
-  this.heap_len = 0;               /* number of elements in the heap */
-  this.heap_max = 0;               /* element of largest frequency */
-  /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
-   * The same heap array is used to build all trees.
-   */
+  inflator.push(input, true);
 
-  this.depth = new utils.Buf16(2*L_CODES+1); //uch depth[2*L_CODES+1];
-  zero(this.depth);
-  /* Depth of each subtree used as tie breaker for trees of equal frequency
-   */
+  // That will never happens, if you don't cheat with options :)
+  if (inflator.err) { throw inflator.msg; }
 
-  this.l_buf = 0;          /* buffer index for literals or lengths */
+  return inflator.result;
+}
 
-  this.lit_bufsize = 0;
-  /* Size of match buffer for literals/lengths.  There are 4 reasons for
-   * limiting lit_bufsize to 64K:
-   *   - frequencies can be kept in 16 bit counters
-   *   - if compression is not successful for the first block, all input
-   *     data is still in the window so we can still emit a stored block even
-   *     when input comes from standard input.  (This can also be done for
-   *     all blocks if lit_bufsize is not greater than 32K.)
-   *   - if compression is not successful for a file smaller than 64K, we can
-   *     even emit a stored file instead of a stored block (saving 5 bytes).
-   *     This is applicable only for zip (not gzip or zlib).
-   *   - creating new Huffman trees less frequently may not provide fast
-   *     adaptation to changes in the input data statistics. (Take for
-   *     example a binary file with poorly compressible code followed by
-   *     a highly compressible string table.) Smaller buffer sizes give
-   *     fast adaptation but have of course the overhead of transmitting
-   *     trees more frequently.
-   *   - I can't count above 4
-   */
 
-  this.last_lit = 0;      /* running index in l_buf */
+/**
+ * inflateRaw(data[, options]) -> Uint8Array|Array|String
+ * - data (Uint8Array|Array|String): input data to decompress.
+ * - options (Object): zlib inflate options.
+ *
+ * The same as [[inflate]], but creates raw data, without wrapper
+ * (header and adler32 crc).
+ **/
+function inflateRaw(input, options) {
+  options = options || {};
+  options.raw = true;
+  return inflate(input, options);
+}
 
-  this.d_buf = 0;
-  /* Buffer index for distances. To simplify the code, d_buf and l_buf have
-   * the same number of elements. To use different lengths, an extra flag
-   * array would be necessary.
-   */
 
-  this.opt_len = 0;       /* bit length of current block with optimal trees */
-  this.static_len = 0;    /* bit length of current block with static trees */
-  this.matches = 0;       /* number of string matches in current block */
-  this.insert = 0;        /* bytes at end of window left to insert */
+/**
+ * ungzip(data[, options]) -> Uint8Array|Array|String
+ * - data (Uint8Array|Array|String): input data to decompress.
+ * - options (Object): zlib inflate options.
+ *
+ * Just shortcut to [[inflate]], because it autodetects format
+ * by header.content. Done for convenience.
+ **/
 
 
-  this.bi_buf = 0;
-  /* Output buffer. bits are inserted starting at the bottom (least
-   * significant bits).
-   */
-  this.bi_valid = 0;
-  /* Number of valid bits in bi_buf.  All bits above the last valid bit
-   * are always zero.
-   */
+exports.Inflate = Inflate;
+exports.inflate = inflate;
+exports.inflateRaw = inflateRaw;
+exports.ungzip  = inflate;
 
-  // Used for window memory init. We safely ignore it for JS. That makes
-  // sense only for pointers and memory check tools.
-  //this.high_water = 0;
-  /* High water mark offset in window for initialized bytes -- bytes above
-   * this are set to zero in order to avoid memory check warnings when
-   * longest match routines access bytes past the input.  This is then
-   * updated to the new high water mark.
-   */
-}
+},{"./utils/common":20,"./utils/strings":21,"./zlib/constants":23,"./zlib/gzheader":26,"./zlib/inflate.js":28,"./zlib/messages":30,"./zlib/zstream":32}],20:[function(require,module,exports){
+'use strict';
 
 
-function deflateResetKeep(strm) {
-  var s;
+var TYPED_OK =  (typeof Uint8Array !== 'undefined') &&
+                (typeof Uint16Array !== 'undefined') &&
+                (typeof Int32Array !== 'undefined');
 
-  if (!strm || !strm.state) {
-    return err(strm, Z_STREAM_ERROR);
-  }
 
-  strm.total_in = strm.total_out = 0;
-  strm.data_type = Z_UNKNOWN;
+exports.assign = function (obj /*from1, from2, from3, ...*/) {
+  var sources = Array.prototype.slice.call(arguments, 1);
+  while (sources.length) {
+    var source = sources.shift();
+    if (!source) { continue; }
 
-  s = strm.state;
-  s.pending = 0;
-  s.pending_out = 0;
+    if (typeof source !== 'object') {
+      throw new TypeError(source + 'must be non-object');
+    }
 
-  if (s.wrap < 0) {
-    s.wrap = -s.wrap;
-    /* was made negative by deflate(..., Z_FINISH); */
+    for (var p in source) {
+      if (source.hasOwnProperty(p)) {
+        obj[p] = source[p];
+      }
+    }
   }
-  s.status = (s.wrap ? INIT_STATE : BUSY_STATE);
-  strm.adler = (s.wrap === 2) ?
-    0  // crc32(0, Z_NULL, 0)
-  :
-    1; // adler32(0, Z_NULL, 0)
-  s.last_flush = Z_NO_FLUSH;
-  trees._tr_init(s);
-  return Z_OK;
-}
-
 
-function deflateReset(strm) {
-  var ret = deflateResetKeep(strm);
-  if (ret === Z_OK) {
-    lm_init(strm.state);
-  }
-  return ret;
-}
+  return obj;
+};
 
 
-function deflateSetHeader(strm, head) {
-  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
-  if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; }
-  strm.state.gzhead = head;
-  return Z_OK;
-}
+// reduce buffer size, avoiding mem copy
+exports.shrinkBuf = function (buf, size) {
+  if (buf.length === size) { return buf; }
+  if (buf.subarray) { return buf.subarray(0, size); }
+  buf.length = size;
+  return buf;
+};
 
 
-function deflateInit2(strm, level, method, windowBits, memLevel, strategy) {
-  if (!strm) { // === Z_NULL
-    return Z_STREAM_ERROR;
-  }
-  var wrap = 1;
+var fnTyped = {
+  arraySet: function (dest, src, src_offs, len, dest_offs) {
+    if (src.subarray && dest.subarray) {
+      dest.set(src.subarray(src_offs, src_offs+len), dest_offs);
+      return;
+    }
+    // Fallback to ordinary array
+    for (var i=0; i<len; i++) {
+      dest[dest_offs + i] = src[src_offs + i];
+    }
+  },
+  // Join array of chunks to single array.
+  flattenChunks: function(chunks) {
+    var i, l, len, pos, chunk, result;
 
-  if (level === Z_DEFAULT_COMPRESSION) {
-    level = 6;
-  }
+    // calculate data length
+    len = 0;
+    for (i=0, l=chunks.length; i<l; i++) {
+      len += chunks[i].length;
+    }
 
-  if (windowBits < 0) { /* suppress zlib wrapper */
-    wrap = 0;
-    windowBits = -windowBits;
-  }
+    // join chunks
+    result = new Uint8Array(len);
+    pos = 0;
+    for (i=0, l=chunks.length; i<l; i++) {
+      chunk = chunks[i];
+      result.set(chunk, pos);
+      pos += chunk.length;
+    }
 
-  else if (windowBits > 15) {
-    wrap = 2;           /* write gzip wrapper instead */
-    windowBits -= 16;
+    return result;
   }
+};
 
-
-  if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED ||
-    windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
-    strategy < 0 || strategy > Z_FIXED) {
-    return err(strm, Z_STREAM_ERROR);
+var fnUntyped = {
+  arraySet: function (dest, src, src_offs, len, dest_offs) {
+    for (var i=0; i<len; i++) {
+      dest[dest_offs + i] = src[src_offs + i];
+    }
+  },
+  // Join array of chunks to single array.
+  flattenChunks: function(chunks) {
+    return [].concat.apply([], chunks);
   }
+};
 
 
-  if (windowBits === 8) {
-    windowBits = 9;
-  }
-  /* until 256-byte window bug fixed */
+// Enable/Disable typed arrays use, for testing
+//
+exports.setTyped = function (on) {
+  if (on) {
+    exports.Buf8  = Uint8Array;
+    exports.Buf16 = Uint16Array;
+    exports.Buf32 = Int32Array;
+    exports.assign(exports, fnTyped);
+  } else {
+    exports.Buf8  = Array;
+    exports.Buf16 = Array;
+    exports.Buf32 = Array;
+    exports.assign(exports, fnUntyped);
+  }
+};
 
-  var s = new DeflateState();
+exports.setTyped(TYPED_OK);
 
-  strm.state = s;
-  s.strm = strm;
+},{}],21:[function(require,module,exports){
+// String encode/decode helpers
+'use strict';
 
-  s.wrap = wrap;
-  s.gzhead = null;
-  s.w_bits = windowBits;
-  s.w_size = 1 << s.w_bits;
-  s.w_mask = s.w_size - 1;
 
-  s.hash_bits = memLevel + 7;
-  s.hash_size = 1 << s.hash_bits;
-  s.hash_mask = s.hash_size - 1;
-  s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);
+var utils = require('./common');
 
-  s.window = new utils.Buf8(s.w_size * 2);
-  s.head = new utils.Buf16(s.hash_size);
-  s.prev = new utils.Buf16(s.w_size);
 
-  // Don't need mem init magic for JS.
-  //s.high_water = 0;  /* nothing written to s->window yet */
+// Quick check if we can use fast array to bin string conversion
+//
+// - apply(Array) can fail on Android 2.2
+// - apply(Uint8Array) can fail on iOS 5.1 Safary
+//
+var STR_APPLY_OK = true;
+var STR_APPLY_UIA_OK = true;
 
-  s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */
+try { String.fromCharCode.apply(null, [0]); } catch(__) { STR_APPLY_OK = false; }
+try { String.fromCharCode.apply(null, new Uint8Array(1)); } catch(__) { STR_APPLY_UIA_OK = false; }
 
-  s.pending_buf_size = s.lit_bufsize * 4;
-  s.pending_buf = new utils.Buf8(s.pending_buf_size);
 
-  s.d_buf = s.lit_bufsize >> 1;
-  s.l_buf = (1 + 2) * s.lit_bufsize;
+// Table with utf8 lengths (calculated by first byte of sequence)
+// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,
+// because max possible codepoint is 0x10ffff
+var _utf8len = new utils.Buf8(256);
+for (var q=0; q<256; q++) {
+  _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1);
+}
+_utf8len[254]=_utf8len[254]=1; // Invalid sequence start
 
-  s.level = level;
-  s.strategy = strategy;
-  s.method = method;
 
-  return deflateReset(strm);
-}
+// convert string to array (typed, when possible)
+exports.string2buf = function (str) {
+  var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;
 
-function deflateInit(strm, level) {
-  return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);
-}
+  // count binary size
+  for (m_pos = 0; m_pos < str_len; m_pos++) {
+    c = str.charCodeAt(m_pos);
+    if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {
+      c2 = str.charCodeAt(m_pos+1);
+      if ((c2 & 0xfc00) === 0xdc00) {
+        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
+        m_pos++;
+      }
+    }
+    buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;
+  }
 
+  // allocate buffer
+  buf = new utils.Buf8(buf_len);
 
-function deflate(strm, flush) {
-  var old_flush, s;
-  var beg, val; // for gzip header write only
+  // convert
+  for (i=0, m_pos = 0; i < buf_len; m_pos++) {
+    c = str.charCodeAt(m_pos);
+    if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {
+      c2 = str.charCodeAt(m_pos+1);
+      if ((c2 & 0xfc00) === 0xdc00) {
+        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
+        m_pos++;
+      }
+    }
+    if (c < 0x80) {
+      /* one byte */
+      buf[i++] = c;
+    } else if (c < 0x800) {
+      /* two bytes */
+      buf[i++] = 0xC0 | (c >>> 6);
+      buf[i++] = 0x80 | (c & 0x3f);
+    } else if (c < 0x10000) {
+      /* three bytes */
+      buf[i++] = 0xE0 | (c >>> 12);
+      buf[i++] = 0x80 | (c >>> 6 & 0x3f);
+      buf[i++] = 0x80 | (c & 0x3f);
+    } else {
+      /* four bytes */
+      buf[i++] = 0xf0 | (c >>> 18);
+      buf[i++] = 0x80 | (c >>> 12 & 0x3f);
+      buf[i++] = 0x80 | (c >>> 6 & 0x3f);
+      buf[i++] = 0x80 | (c & 0x3f);
+    }
+  }
 
-  if (!strm || !strm.state ||
-    flush > Z_BLOCK || flush < 0) {
-    return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR;
+  return buf;
+};
+
+// Helper (used in 2 places)
+function buf2binstring(buf, len) {
+  // use fallback for big arrays to avoid stack overflow
+  if (len < 65537) {
+    if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) {
+      return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len));
+    }
   }
 
-  s = strm.state;
+  var result = '';
+  for (var i=0; i < len; i++) {
+    result += String.fromCharCode(buf[i]);
+  }
+  return result;
+}
 
-  if (!strm.output ||
-      (!strm.input && strm.avail_in !== 0) ||
-      (s.status === FINISH_STATE && flush !== Z_FINISH)) {
-    return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR);
+
+// Convert byte array to binary string
+exports.buf2binstring = function(buf) {
+  return buf2binstring(buf, buf.length);
+};
+
+
+// Convert binary string (typed, when possible)
+exports.binstring2buf = function(str) {
+  var buf = new utils.Buf8(str.length);
+  for (var i=0, len=buf.length; i < len; i++) {
+    buf[i] = str.charCodeAt(i);
   }
+  return buf;
+};
 
-  s.strm = strm; /* just in case */
-  old_flush = s.last_flush;
-  s.last_flush = flush;
 
-  /* Write the header */
-  if (s.status === INIT_STATE) {
+// convert array to string
+exports.buf2string = function (buf, max) {
+  var i, out, c, c_len;
+  var len = max || buf.length;
 
-    if (s.wrap === 2) { // GZIP header
-      strm.adler = 0;  //crc32(0L, Z_NULL, 0);
-      put_byte(s, 31);
-      put_byte(s, 139);
-      put_byte(s, 8);
-      if (!s.gzhead) { // s->gzhead == Z_NULL
-        put_byte(s, 0);
-        put_byte(s, 0);
-        put_byte(s, 0);
-        put_byte(s, 0);
-        put_byte(s, 0);
-        put_byte(s, s.level === 9 ? 2 :
-                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
-                     4 : 0));
-        put_byte(s, OS_CODE);
-        s.status = BUSY_STATE;
-      }
-      else {
-        put_byte(s, (s.gzhead.text ? 1 : 0) +
-                    (s.gzhead.hcrc ? 2 : 0) +
-                    (!s.gzhead.extra ? 0 : 4) +
-                    (!s.gzhead.name ? 0 : 8) +
-                    (!s.gzhead.comment ? 0 : 16)
-                );
-        put_byte(s, s.gzhead.time & 0xff);
-        put_byte(s, (s.gzhead.time >> 8) & 0xff);
-        put_byte(s, (s.gzhead.time >> 16) & 0xff);
-        put_byte(s, (s.gzhead.time >> 24) & 0xff);
-        put_byte(s, s.level === 9 ? 2 :
-                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
-                     4 : 0));
-        put_byte(s, s.gzhead.os & 0xff);
-        if (s.gzhead.extra && s.gzhead.extra.length) {
-          put_byte(s, s.gzhead.extra.length & 0xff);
-          put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);
-        }
-        if (s.gzhead.hcrc) {
-          strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0);
-        }
-        s.gzindex = 0;
-        s.status = EXTRA_STATE;
-      }
-    }
-    else // DEFLATE header
-    {
-      var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8;
-      var level_flags = -1;
+  // Reserve max possible length (2 words per char)
+  // NB: by unknown reasons, Array is significantly faster for
+  //     String.fromCharCode.apply than Uint16Array.
+  var utf16buf = new Array(len*2);
 
-      if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {
-        level_flags = 0;
-      } else if (s.level < 6) {
-        level_flags = 1;
-      } else if (s.level === 6) {
-        level_flags = 2;
-      } else {
-        level_flags = 3;
-      }
-      header |= (level_flags << 6);
-      if (s.strstart !== 0) { header |= PRESET_DICT; }
-      header += 31 - (header % 31);
+  for (out=0, i=0; i<len;) {
+    c = buf[i++];
+    // quick process ascii
+    if (c < 0x80) { utf16buf[out++] = c; continue; }
 
-      s.status = BUSY_STATE;
-      putShortMSB(s, header);
+    c_len = _utf8len[c];
+    // skip 5 & 6 byte codes
+    if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len-1; continue; }
 
-      /* Save the adler32 of the preset dictionary: */
-      if (s.strstart !== 0) {
-        putShortMSB(s, strm.adler >>> 16);
-        putShortMSB(s, strm.adler & 0xffff);
-      }
-      strm.adler = 1; // adler32(0L, Z_NULL, 0);
+    // apply mask on first byte
+    c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;
+    // join the rest
+    while (c_len > 1 && i < len) {
+      c = (c << 6) | (buf[i++] & 0x3f);
+      c_len--;
     }
-  }
 
-//#ifdef GZIP
-  if (s.status === EXTRA_STATE) {
-    if (s.gzhead.extra/* != Z_NULL*/) {
-      beg = s.pending;  /* start of bytes to update crc */
+    // terminated by end of string?
+    if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }
 
-      while (s.gzindex < (s.gzhead.extra.length & 0xffff)) {
-        if (s.pending === s.pending_buf_size) {
-          if (s.gzhead.hcrc && s.pending > beg) {
-            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
-          }
-          flush_pending(strm);
-          beg = s.pending;
-          if (s.pending === s.pending_buf_size) {
-            break;
-          }
-        }
-        put_byte(s, s.gzhead.extra[s.gzindex] & 0xff);
-        s.gzindex++;
-      }
-      if (s.gzhead.hcrc && s.pending > beg) {
-        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
-      }
-      if (s.gzindex === s.gzhead.extra.length) {
-        s.gzindex = 0;
-        s.status = NAME_STATE;
-      }
-    }
-    else {
-      s.status = NAME_STATE;
+    if (c < 0x10000) {
+      utf16buf[out++] = c;
+    } else {
+      c -= 0x10000;
+      utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);
+      utf16buf[out++] = 0xdc00 | (c & 0x3ff);
     }
   }
-  if (s.status === NAME_STATE) {
-    if (s.gzhead.name/* != Z_NULL*/) {
-      beg = s.pending;  /* start of bytes to update crc */
-      //int val;
 
-      do {
-        if (s.pending === s.pending_buf_size) {
-          if (s.gzhead.hcrc && s.pending > beg) {
-            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
-          }
-          flush_pending(strm);
-          beg = s.pending;
-          if (s.pending === s.pending_buf_size) {
-            val = 1;
-            break;
-          }
-        }
-        // JS specific: little magic to add zero terminator to end of string
-        if (s.gzindex < s.gzhead.name.length) {
-          val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;
-        } else {
-          val = 0;
-        }
-        put_byte(s, val);
-      } while (val !== 0);
+  return buf2binstring(utf16buf, out);
+};
 
-      if (s.gzhead.hcrc && s.pending > beg) {
-        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
-      }
-      if (val === 0) {
-        s.gzindex = 0;
-        s.status = COMMENT_STATE;
-      }
-    }
-    else {
-      s.status = COMMENT_STATE;
-    }
-  }
-  if (s.status === COMMENT_STATE) {
-    if (s.gzhead.comment/* != Z_NULL*/) {
-      beg = s.pending;  /* start of bytes to update crc */
-      //int val;
 
-      do {
-        if (s.pending === s.pending_buf_size) {
-          if (s.gzhead.hcrc && s.pending > beg) {
-            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
-          }
-          flush_pending(strm);
-          beg = s.pending;
-          if (s.pending === s.pending_buf_size) {
-            val = 1;
-            break;
-          }
-        }
-        // JS specific: little magic to add zero terminator to end of string
-        if (s.gzindex < s.gzhead.comment.length) {
-          val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;
-        } else {
-          val = 0;
-        }
-        put_byte(s, val);
-      } while (val !== 0);
+// Calculate max possible position in utf8 buffer,
+// that will not break sequence. If that's not possible
+// - (very small limits) return max size as is.
+//
+// buf[] - utf8 bytes array
+// max   - length limit (mandatory);
+exports.utf8border = function(buf, max) {
+  var pos;
 
-      if (s.gzhead.hcrc && s.pending > beg) {
-        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
-      }
-      if (val === 0) {
-        s.status = HCRC_STATE;
-      }
-    }
-    else {
-      s.status = HCRC_STATE;
-    }
-  }
-  if (s.status === HCRC_STATE) {
-    if (s.gzhead.hcrc) {
-      if (s.pending + 2 > s.pending_buf_size) {
-        flush_pending(strm);
-      }
-      if (s.pending + 2 <= s.pending_buf_size) {
-        put_byte(s, strm.adler & 0xff);
-        put_byte(s, (strm.adler >> 8) & 0xff);
-        strm.adler = 0; //crc32(0L, Z_NULL, 0);
-        s.status = BUSY_STATE;
-      }
-    }
-    else {
-      s.status = BUSY_STATE;
-    }
-  }
-//#endif
+  max = max || buf.length;
+  if (max > buf.length) { max = buf.length; }
 
-  /* Flush as much pending output as possible */
-  if (s.pending !== 0) {
-    flush_pending(strm);
-    if (strm.avail_out === 0) {
-      /* Since avail_out is 0, deflate will be called again with
-       * more output space, but possibly with both pending and
-       * avail_in equal to zero. There won't be anything to do,
-       * but this is not an error situation so make sure we
-       * return OK instead of BUF_ERROR at next call of deflate:
-       */
-      s.last_flush = -1;
-      return Z_OK;
-    }
+  // go back from last position, until start of sequence found
+  pos = max-1;
+  while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }
 
-    /* Make sure there is something to do and avoid duplicate consecutive
-     * flushes. For repeated and useless calls with Z_FINISH, we keep
-     * returning Z_STREAM_END instead of Z_BUF_ERROR.
-     */
-  } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&
-    flush !== Z_FINISH) {
-    return err(strm, Z_BUF_ERROR);
-  }
+  // Fuckup - very small and broken sequence,
+  // return max, because we should return something anyway.
+  if (pos < 0) { return max; }
 
-  /* User must not provide more input after the first FINISH: */
-  if (s.status === FINISH_STATE && strm.avail_in !== 0) {
-    return err(strm, Z_BUF_ERROR);
-  }
+  // If we came to start of buffer - that means vuffer is too small,
+  // return max too.
+  if (pos === 0) { return max; }
 
-  /* Start a new block or continue the current one.
-   */
-  if (strm.avail_in !== 0 || s.lookahead !== 0 ||
-    (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) {
-    var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) :
-      (s.strategy === Z_RLE ? deflate_rle(s, flush) :
-        configuration_table[s.level].func(s, flush));
+  return (pos + _utf8len[buf[pos]] > max) ? pos : max;
+};
 
-    if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {
-      s.status = FINISH_STATE;
-    }
-    if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {
-      if (strm.avail_out === 0) {
-        s.last_flush = -1;
-        /* avoid BUF_ERROR next call, see above */
-      }
-      return Z_OK;
-      /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
-       * of deflate should use the same flush parameter to make sure
-       * that the flush is complete. So we don't have to output an
-       * empty block here, this will be done at next call. This also
-       * ensures that for a very small output buffer, we emit at most
-       * one empty block.
-       */
-    }
-    if (bstate === BS_BLOCK_DONE) {
-      if (flush === Z_PARTIAL_FLUSH) {
-        trees._tr_align(s);
-      }
-      else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */
+},{"./common":20}],22:[function(require,module,exports){
+'use strict';
 
-        trees._tr_stored_block(s, 0, 0, false);
-        /* For a full flush, this empty block will be recognized
-         * as a special marker by inflate_sync().
-         */
-        if (flush === Z_FULL_FLUSH) {
-          /*** CLEAR_HASH(s); ***/             /* forget history */
-          zero(s.head); // Fill with NIL (= 0);
+// Note: adler32 takes 12% for level 0 and 2% for level 6.
+// It doesn't worth to make additional optimizationa as in original.
+// Small size is preferable.
 
-          if (s.lookahead === 0) {
-            s.strstart = 0;
-            s.block_start = 0;
-            s.insert = 0;
-          }
-        }
-      }
-      flush_pending(strm);
-      if (strm.avail_out === 0) {
-        s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */
-        return Z_OK;
-      }
-    }
-  }
-  //Assert(strm->avail_out > 0, "bug2");
-  //if (strm.avail_out <= 0) { throw new Error("bug2");}
+function adler32(adler, buf, len, pos) {
+  var s1 = (adler & 0xffff) |0,
+      s2 = ((adler >>> 16) & 0xffff) |0,
+      n = 0;
 
-  if (flush !== Z_FINISH) { return Z_OK; }
-  if (s.wrap <= 0) { return Z_STREAM_END; }
+  while (len !== 0) {
+    // Set limit ~ twice less than 5552, to keep
+    // s2 in 31-bits, because we force signed ints.
+    // in other case %= will fail.
+    n = len > 2000 ? 2000 : len;
+    len -= n;
 
-  /* Write the trailer */
-  if (s.wrap === 2) {
-    put_byte(s, strm.adler & 0xff);
-    put_byte(s, (strm.adler >> 8) & 0xff);
-    put_byte(s, (strm.adler >> 16) & 0xff);
-    put_byte(s, (strm.adler >> 24) & 0xff);
-    put_byte(s, strm.total_in & 0xff);
-    put_byte(s, (strm.total_in >> 8) & 0xff);
-    put_byte(s, (strm.total_in >> 16) & 0xff);
-    put_byte(s, (strm.total_in >> 24) & 0xff);
-  }
-  else
-  {
-    putShortMSB(s, strm.adler >>> 16);
-    putShortMSB(s, strm.adler & 0xffff);
+    do {
+      s1 = (s1 + buf[pos++]) |0;
+      s2 = (s2 + s1) |0;
+    } while (--n);
+
+    s1 %= 65521;
+    s2 %= 65521;
   }
 
-  flush_pending(strm);
-  /* If avail_out is zero, the application will call deflate again
-   * to flush the rest.
-   */
-  if (s.wrap > 0) { s.wrap = -s.wrap; }
-  /* write the trailer only once! */
-  return s.pending !== 0 ? Z_OK : Z_STREAM_END;
+  return (s1 | (s2 << 16)) |0;
 }
 
-function deflateEnd(strm) {
-  var status;
 
-  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
-    return Z_STREAM_ERROR;
-  }
+module.exports = adler32;
 
-  status = strm.state.status;
-  if (status !== INIT_STATE &&
-    status !== EXTRA_STATE &&
-    status !== NAME_STATE &&
-    status !== COMMENT_STATE &&
-    status !== HCRC_STATE &&
-    status !== BUSY_STATE &&
-    status !== FINISH_STATE
-  ) {
-    return err(strm, Z_STREAM_ERROR);
-  }
+},{}],23:[function(require,module,exports){
+module.exports = {
 
-  strm.state = null;
+  /* Allowed flush values; see deflate() and inflate() below for details */
+  Z_NO_FLUSH:         0,
+  Z_PARTIAL_FLUSH:    1,
+  Z_SYNC_FLUSH:       2,
+  Z_FULL_FLUSH:       3,
+  Z_FINISH:           4,
+  Z_BLOCK:            5,
+  Z_TREES:            6,
 
-  return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK;
-}
+  /* Return codes for the compression/decompression functions. Negative values
+  * are errors, positive values are used for special but normal events.
+  */
+  Z_OK:               0,
+  Z_STREAM_END:       1,
+  Z_NEED_DICT:        2,
+  Z_ERRNO:           -1,
+  Z_STREAM_ERROR:    -2,
+  Z_DATA_ERROR:      -3,
+  //Z_MEM_ERROR:     -4,
+  Z_BUF_ERROR:       -5,
+  //Z_VERSION_ERROR: -6,
 
-/* =========================================================================
- * Copy the source state to the destination state
- */
-//function deflateCopy(dest, source) {
-//
-//}
+  /* compression levels */
+  Z_NO_COMPRESSION:         0,
+  Z_BEST_SPEED:             1,
+  Z_BEST_COMPRESSION:       9,
+  Z_DEFAULT_COMPRESSION:   -1,
 
-exports.deflateInit = deflateInit;
-exports.deflateInit2 = deflateInit2;
-exports.deflateReset = deflateReset;
-exports.deflateResetKeep = deflateResetKeep;
-exports.deflateSetHeader = deflateSetHeader;
-exports.deflate = deflate;
-exports.deflateEnd = deflateEnd;
-exports.deflateInfo = 'pako deflate (from Nodeca project)';
 
-/* Not implemented
-exports.deflateBound = deflateBound;
-exports.deflateCopy = deflateCopy;
-exports.deflateSetDictionary = deflateSetDictionary;
-exports.deflateParams = deflateParams;
-exports.deflatePending = deflatePending;
-exports.deflatePrime = deflatePrime;
-exports.deflateTune = deflateTune;
-*/
+  Z_FILTERED:               1,
+  Z_HUFFMAN_ONLY:           2,
+  Z_RLE:                    3,
+  Z_FIXED:                  4,
+  Z_DEFAULT_STRATEGY:       0,
 
-},{"../utils/common":4,"./adler32":6,"./crc32":8,"./messages":14,"./trees":15}],10:[function(require,module,exports){
-'use strict';
+  /* Possible values of the data_type field (though see inflate()) */
+  Z_BINARY:                 0,
+  Z_TEXT:                   1,
+  //Z_ASCII:                1, // = Z_TEXT (deprecated)
+  Z_UNKNOWN:                2,
 
+  /* The deflate compression method */
+  Z_DEFLATED:               8
+  //Z_NULL:                 null // Use -1 or null inline, depending on var type
+};
 
-function GZheader() {
-  /* true if compressed data believed to be text */
-  this.text       = 0;
-  /* modification time */
-  this.time       = 0;
-  /* extra flags (not used when writing a gzip file) */
-  this.xflags     = 0;
-  /* operating system */
-  this.os         = 0;
-  /* pointer to extra field or Z_NULL if none */
-  this.extra      = null;
-  /* extra field length (valid if extra != Z_NULL) */
-  this.extra_len  = 0; // Actually, we don't need it in JS,
-                       // but leave for few code modifications
+},{}],24:[function(require,module,exports){
+'use strict';
 
-  //
-  // Setup limits is not necessary because in js we should not preallocate memory
-  // for inflate use constant limit in 65536 bytes
-  //
+// Note: we can't get significant speed boost here.
+// So write code to minimize size - no pregenerated tables
+// and array tools dependencies.
 
-  /* space at extra (only when reading header) */
-  // this.extra_max  = 0;
-  /* pointer to zero-terminated file name or Z_NULL */
-  this.name       = '';
-  /* space at name (only when reading header) */
-  // this.name_max   = 0;
-  /* pointer to zero-terminated comment or Z_NULL */
-  this.comment    = '';
-  /* space at comment (only when reading header) */
-  // this.comm_max   = 0;
-  /* true if there was or will be a header crc */
-  this.hcrc       = 0;
-  /* true when done reading gzip header (not used when writing a gzip file) */
-  this.done       = false;
-}
 
-module.exports = GZheader;
+// Use ordinary array, since untyped makes no boost here
+function makeTable() {
+  var c, table = [];
 
-},{}],11:[function(require,module,exports){
-'use strict';
+  for (var n =0; n < 256; n++) {
+    c = n;
+    for (var k =0; k < 8; k++) {
+      c = ((c&1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
+    }
+    table[n] = c;
+  }
 
-// See state defs from inflate.js
-var BAD = 30;       /* got a data error -- remain here until reset */
-var TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
+  return table;
+}
 
-/*
-   Decode literal, length, and distance codes and write out the resulting
-   literal and match bytes until either not enough input or output is
-   available, an end-of-block is encountered, or a data error is encountered.
-   When large enough input and output buffers are supplied to inflate(), for
-   example, a 16K input buffer and a 64K output buffer, more than 95% of the
-   inflate execution time is spent in this routine.
+// Create table on load. Just 255 signed longs. Not a problem.
+var crcTable = makeTable();
 
-   Entry assumptions:
 
-        state.mode === LEN
-        strm.avail_in >= 6
-        strm.avail_out >= 258
-        start >= strm.avail_out
-        state.bits < 8
+function crc32(crc, buf, len, pos) {
+  var t = crcTable,
+      end = pos + len;
 
-   On return, state.mode is one of:
+  crc = crc ^ (-1);
 
-        LEN -- ran out of enough output space or enough available input
-        TYPE -- reached end of block code, inflate() to interpret next block
-        BAD -- error in block data
+  for (var i = pos; i < end; i++) {
+    crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
+  }
 
-   Notes:
+  return (crc ^ (-1)); // >>> 0;
+}
 
-    - The maximum input bits used by a length/distance pair is 15 bits for the
-      length code, 5 bits for the length extra, 15 bits for the distance code,
-      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
-      Therefore if strm.avail_in >= 6, then there is enough input to avoid
-      checking for available input while decoding.
 
-    - The maximum bytes that a single length/distance pair can output is 258
-      bytes, which is the maximum length that can be coded.  inflate_fast()
-      requires strm.avail_out >= 258 for each loop to avoid checking for
-      output space.
- */
-module.exports = function inflate_fast(strm, start) {
-  var state;
-  var _in;                    /* local strm.input */
-  var last;                   /* have enough input while in < last */
-  var _out;                   /* local strm.output */
-  var beg;                    /* inflate()'s initial strm.output */
-  var end;                    /* while out < end, enough space available */
-//#ifdef INFLATE_STRICT
-  var dmax;                   /* maximum distance from zlib header */
-//#endif
-  var wsize;                  /* window size or zero if not using window */
-  var whave;                  /* valid bytes in the window */
-  var wnext;                  /* window write index */
-  var window;                 /* allocated sliding window, if wsize != 0 */
-  var hold;                   /* local strm.hold */
-  var bits;                   /* local strm.bits */
-  var lcode;                  /* local strm.lencode */
-  var dcode;                  /* local strm.distcode */
-  var lmask;                  /* mask for first level of length codes */
-  var dmask;                  /* mask for first level of distance codes */
-  var here;                   /* retrieved table entry */
-  var op;                     /* code bits, operation, extra bits, or */
-                              /*  window position, window bytes to copy */
-  var len;                    /* match length, unused bytes */
-  var dist;                   /* match distance */
-  var from;                   /* where to copy match from */
-  var from_source;
+module.exports = crc32;
 
+},{}],25:[function(require,module,exports){
+'use strict';
 
-  var input, output; // JS specific, because we have no pointers
+var utils   = require('../utils/common');
+var trees   = require('./trees');
+var adler32 = require('./adler32');
+var crc32   = require('./crc32');
+var msg   = require('./messages');
 
-  /* copy state to local variables */
-  state = strm.state;
-  //here = state.here;
-  _in = strm.next_in;
-  input = strm.input;
-  last = _in + (strm.avail_in - 5);
-  _out = strm.next_out;
-  output = strm.output;
-  beg = _out - (start - strm.avail_out);
-  end = _out + (strm.avail_out - 257);
-//#ifdef INFLATE_STRICT
-  dmax = state.dmax;
-//#endif
-  wsize = state.wsize;
-  whave = state.whave;
-  wnext = state.wnext;
-  window = state.window;
-  hold = state.hold;
-  bits = state.bits;
-  lcode = state.lencode;
-  dcode = state.distcode;
-  lmask = (1 << state.lenbits) - 1;
-  dmask = (1 << state.distbits) - 1;
+/* Public constants ==========================================================*/
+/* ===========================================================================*/
 
 
-  /* decode literals and length/distances until end-of-block or not enough
-     input data or output space */
+/* Allowed flush values; see deflate() and inflate() below for details */
+var Z_NO_FLUSH      = 0;
+var Z_PARTIAL_FLUSH = 1;
+//var Z_SYNC_FLUSH    = 2;
+var Z_FULL_FLUSH    = 3;
+var Z_FINISH        = 4;
+var Z_BLOCK         = 5;
+//var Z_TREES         = 6;
 
-  top:
-  do {
-    if (bits < 15) {
-      hold += input[_in++] << bits;
-      bits += 8;
-      hold += input[_in++] << bits;
-      bits += 8;
-    }
 
-    here = lcode[hold & lmask];
+/* Return codes for the compression/decompression functions. Negative values
+ * are errors, positive values are used for special but normal events.
+ */
+var Z_OK            = 0;
+var Z_STREAM_END    = 1;
+//var Z_NEED_DICT     = 2;
+//var Z_ERRNO         = -1;
+var Z_STREAM_ERROR  = -2;
+var Z_DATA_ERROR    = -3;
+//var Z_MEM_ERROR     = -4;
+var Z_BUF_ERROR     = -5;
+//var Z_VERSION_ERROR = -6;
 
-    dolen:
-    for (;;) { // Goto emulation
-      op = here >>> 24/*here.bits*/;
-      hold >>>= op;
-      bits -= op;
-      op = (here >>> 16) & 0xff/*here.op*/;
-      if (op === 0) {                          /* literal */
-        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
-        //        "inflate:         literal '%c'\n" :
-        //        "inflate:         literal 0x%02x\n", here.val));
-        output[_out++] = here & 0xffff/*here.val*/;
-      }
-      else if (op & 16) {                     /* length base */
-        len = here & 0xffff/*here.val*/;
-        op &= 15;                           /* number of extra bits */
-        if (op) {
-          if (bits < op) {
-            hold += input[_in++] << bits;
-            bits += 8;
-          }
-          len += hold & ((1 << op) - 1);
-          hold >>>= op;
-          bits -= op;
-        }
-        //Tracevv((stderr, "inflate:         length %u\n", len));
-        if (bits < 15) {
-          hold += input[_in++] << bits;
-          bits += 8;
-          hold += input[_in++] << bits;
-          bits += 8;
-        }
-        here = dcode[hold & dmask];
 
-        dodist:
-        for (;;) { // goto emulation
-          op = here >>> 24/*here.bits*/;
-          hold >>>= op;
-          bits -= op;
-          op = (here >>> 16) & 0xff/*here.op*/;
+/* compression levels */
+//var Z_NO_COMPRESSION      = 0;
+//var Z_BEST_SPEED          = 1;
+//var Z_BEST_COMPRESSION    = 9;
+var Z_DEFAULT_COMPRESSION = -1;
 
-          if (op & 16) {                      /* distance base */
-            dist = here & 0xffff/*here.val*/;
-            op &= 15;                       /* number of extra bits */
-            if (bits < op) {
-              hold += input[_in++] << bits;
-              bits += 8;
-              if (bits < op) {
-                hold += input[_in++] << bits;
-                bits += 8;
-              }
-            }
-            dist += hold & ((1 << op) - 1);
-//#ifdef INFLATE_STRICT
-            if (dist > dmax) {
-              strm.msg = 'invalid distance too far back';
-              state.mode = BAD;
-              break top;
-            }
-//#endif
-            hold >>>= op;
-            bits -= op;
-            //Tracevv((stderr, "inflate:         distance %u\n", dist));
-            op = _out - beg;                /* max distance in output */
-            if (dist > op) {                /* see if copy from window */
-              op = dist - op;               /* distance back in window */
-              if (op > whave) {
-                if (state.sane) {
-                  strm.msg = 'invalid distance too far back';
-                  state.mode = BAD;
-                  break top;
-                }
 
-// (!) This block is disabled in zlib defailts,
-// don't enable it for binary compatibility
-//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
-//                if (len <= op - whave) {
-//                  do {
-//                    output[_out++] = 0;
-//                  } while (--len);
-//                  continue top;
-//                }
-//                len -= op - whave;
-//                do {
-//                  output[_out++] = 0;
-//                } while (--op > whave);
-//                if (op === 0) {
-//                  from = _out - dist;
-//                  do {
-//                    output[_out++] = output[from++];
-//                  } while (--len);
-//                  continue top;
-//                }
-//#endif
-              }
-              from = 0; // window index
-              from_source = window;
-              if (wnext === 0) {           /* very common case */
-                from += wsize - op;
-                if (op < len) {         /* some from window */
-                  len -= op;
-                  do {
-                    output[_out++] = window[from++];
-                  } while (--op);
-                  from = _out - dist;  /* rest from output */
-                  from_source = output;
-                }
-              }
-              else if (wnext < op) {      /* wrap around window */
-                from += wsize + wnext - op;
-                op -= wnext;
-                if (op < len) {         /* some from end of window */
-                  len -= op;
-                  do {
-                    output[_out++] = window[from++];
-                  } while (--op);
-                  from = 0;
-                  if (wnext < len) {  /* some from start of window */
-                    op = wnext;
-                    len -= op;
-                    do {
-                      output[_out++] = window[from++];
-                    } while (--op);
-                    from = _out - dist;      /* rest from output */
-                    from_source = output;
-                  }
-                }
-              }
-              else {                      /* contiguous in window */
-                from += wnext - op;
-                if (op < len) {         /* some from window */
-                  len -= op;
-                  do {
-                    output[_out++] = window[from++];
-                  } while (--op);
-                  from = _out - dist;  /* rest from output */
-                  from_source = output;
-                }
-              }
-              while (len > 2) {
-                output[_out++] = from_source[from++];
-                output[_out++] = from_source[from++];
-                output[_out++] = from_source[from++];
-                len -= 3;
-              }
-              if (len) {
-                output[_out++] = from_source[from++];
-                if (len > 1) {
-                  output[_out++] = from_source[from++];
-                }
-              }
-            }
-            else {
-              from = _out - dist;          /* copy direct from output */
-              do {                        /* minimum length is three */
-                output[_out++] = output[from++];
-                output[_out++] = output[from++];
-                output[_out++] = output[from++];
-                len -= 3;
-              } while (len > 2);
-              if (len) {
-                output[_out++] = output[from++];
-                if (len > 1) {
-                  output[_out++] = output[from++];
-                }
-              }
-            }
-          }
-          else if ((op & 64) === 0) {          /* 2nd level distance code */
-            here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
-            continue dodist;
-          }
-          else {
-            strm.msg = 'invalid distance code';
-            state.mode = BAD;
-            break top;
-          }
+var Z_FILTERED            = 1;
+var Z_HUFFMAN_ONLY        = 2;
+var Z_RLE                 = 3;
+var Z_FIXED               = 4;
+var Z_DEFAULT_STRATEGY    = 0;
 
-          break; // need to emulate goto via "continue"
-        }
-      }
-      else if ((op & 64) === 0) {              /* 2nd level length code */
-        here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
-        continue dolen;
-      }
-      else if (op & 32) {                     /* end-of-block */
-        //Tracevv((stderr, "inflate:         end of block\n"));
-        state.mode = TYPE;
-        break top;
-      }
-      else {
-        strm.msg = 'invalid literal/length code';
-        state.mode = BAD;
-        break top;
-      }
+/* Possible values of the data_type field (though see inflate()) */
+//var Z_BINARY              = 0;
+//var Z_TEXT                = 1;
+//var Z_ASCII               = 1; // = Z_TEXT
+var Z_UNKNOWN             = 2;
 
-      break; // need to emulate goto via "continue"
-    }
-  } while (_in < last && _out < end);
 
-  /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
-  len = bits >> 3;
-  _in -= len;
-  bits -= len << 3;
-  hold &= (1 << bits) - 1;
+/* The deflate compression method */
+var Z_DEFLATED  = 8;
 
-  /* update state and return */
-  strm.next_in = _in;
-  strm.next_out = _out;
-  strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));
-  strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));
-  state.hold = hold;
-  state.bits = bits;
-  return;
-};
+/*============================================================================*/
 
-},{}],12:[function(require,module,exports){
-'use strict';
 
+var MAX_MEM_LEVEL = 9;
+/* Maximum value for memLevel in deflateInit2 */
+var MAX_WBITS = 15;
+/* 32K LZ77 window */
+var DEF_MEM_LEVEL = 8;
 
-var utils = require('../utils/common');
-var adler32 = require('./adler32');
-var crc32   = require('./crc32');
-var inflate_fast = require('./inffast');
-var inflate_table = require('./inftrees');
 
-var CODES = 0;
-var LENS = 1;
-var DISTS = 2;
-
-/* Public constants ==========================================================*/
-/* ===========================================================================*/
-
-
-/* Allowed flush values; see deflate() and inflate() below for details */
-//var Z_NO_FLUSH      = 0;
-//var Z_PARTIAL_FLUSH = 1;
-//var Z_SYNC_FLUSH    = 2;
-//var Z_FULL_FLUSH    = 3;
-var Z_FINISH        = 4;
-var Z_BLOCK         = 5;
-var Z_TREES         = 6;
-
-
-/* Return codes for the compression/decompression functions. Negative values
- * are errors, positive values are used for special but normal events.
- */
-var Z_OK            = 0;
-var Z_STREAM_END    = 1;
-var Z_NEED_DICT     = 2;
-//var Z_ERRNO         = -1;
-var Z_STREAM_ERROR  = -2;
-var Z_DATA_ERROR    = -3;
-var Z_MEM_ERROR     = -4;
-var Z_BUF_ERROR     = -5;
-//var Z_VERSION_ERROR = -6;
+var LENGTH_CODES  = 29;
+/* number of length codes, not counting the special END_BLOCK code */
+var LITERALS      = 256;
+/* number of literal bytes 0..255 */
+var L_CODES       = LITERALS + 1 + LENGTH_CODES;
+/* number of Literal or Length codes, including the END_BLOCK code */
+var D_CODES       = 30;
+/* number of distance codes */
+var BL_CODES      = 19;
+/* number of codes used to transfer the bit lengths */
+var HEAP_SIZE     = 2*L_CODES + 1;
+/* maximum heap size */
+var MAX_BITS  = 15;
+/* All codes must not exceed MAX_BITS bits */
 
-/* The deflate compression method */
-var Z_DEFLATED  = 8;
+var MIN_MATCH = 3;
+var MAX_MATCH = 258;
+var MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);
 
+var PRESET_DICT = 0x20;
 
-/* STATES ====================================================================*/
-/* ===========================================================================*/
+var INIT_STATE = 42;
+var EXTRA_STATE = 69;
+var NAME_STATE = 73;
+var COMMENT_STATE = 91;
+var HCRC_STATE = 103;
+var BUSY_STATE = 113;
+var FINISH_STATE = 666;
 
+var BS_NEED_MORE      = 1; /* block not completed, need more input or more output */
+var BS_BLOCK_DONE     = 2; /* block flush performed */
+var BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */
+var BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */
 
-var    HEAD = 1;       /* i: waiting for magic header */
-var    FLAGS = 2;      /* i: waiting for method and flags (gzip) */
-var    TIME = 3;       /* i: waiting for modification time (gzip) */
-var    OS = 4;         /* i: waiting for extra flags and operating system (gzip) */
-var    EXLEN = 5;      /* i: waiting for extra length (gzip) */
-var    EXTRA = 6;      /* i: waiting for extra bytes (gzip) */
-var    NAME = 7;       /* i: waiting for end of file name (gzip) */
-var    COMMENT = 8;    /* i: waiting for end of comment (gzip) */
-var    HCRC = 9;       /* i: waiting for header crc (gzip) */
-var    DICTID = 10;    /* i: waiting for dictionary check value */
-var    DICT = 11;      /* waiting for inflateSetDictionary() call */
-var        TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
-var        TYPEDO = 13;    /* i: same, but skip check to exit inflate on new block */
-var        STORED = 14;    /* i: waiting for stored size (length and complement) */
-var        COPY_ = 15;     /* i/o: same as COPY below, but only first time in */
-var        COPY = 16;      /* i/o: waiting for input or output to copy stored block */
-var        TABLE = 17;     /* i: waiting for dynamic block table lengths */
-var        LENLENS = 18;   /* i: waiting for code length code lengths */
-var        CODELENS = 19;  /* i: waiting for length/lit and distance code lengths */
-var            LEN_ = 20;      /* i: same as LEN below, but only first time in */
-var            LEN = 21;       /* i: waiting for length/lit/eob code */
-var            LENEXT = 22;    /* i: waiting for length extra bits */
-var            DIST = 23;      /* i: waiting for distance code */
-var            DISTEXT = 24;   /* i: waiting for distance extra bits */
-var            MATCH = 25;     /* o: waiting for output space to copy string */
-var            LIT = 26;       /* o: waiting for output space to write literal */
-var    CHECK = 27;     /* i: waiting for 32-bit check value */
-var    LENGTH = 28;    /* i: waiting for 32-bit length (gzip) */
-var    DONE = 29;      /* finished check, done -- remain here until reset */
-var    BAD = 30;       /* got a data error -- remain here until reset */
-var    MEM = 31;       /* got an inflate() memory error -- remain here until reset */
-var    SYNC = 32;      /* looking for synchronization bytes to restart inflate() */
+var OS_CODE = 0x03; // Unix :) . Don't detect, use this default.
 
-/* ===========================================================================*/
+function err(strm, errorCode) {
+  strm.msg = msg[errorCode];
+  return errorCode;
+}
 
+function rank(f) {
+  return ((f) << 1) - ((f) > 4 ? 9 : 0);
+}
 
+function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }
 
-var ENOUGH_LENS = 852;
-var ENOUGH_DISTS = 592;
-//var ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);
 
-var MAX_WBITS = 15;
-/* 32K LZ77 window */
-var DEF_WBITS = MAX_WBITS;
+/* =========================================================================
+ * Flush as much pending output as possible. All deflate() output goes
+ * through this function so some applications may wish to modify it
+ * to avoid allocating a large strm->output buffer and copying into it.
+ * (See also read_buf()).
+ */
+function flush_pending(strm) {
+  var s = strm.state;
 
+  //_tr_flush_bits(s);
+  var len = s.pending;
+  if (len > strm.avail_out) {
+    len = strm.avail_out;
+  }
+  if (len === 0) { return; }
 
-function ZSWAP32(q) {
-  return  (((q >>> 24) & 0xff) +
-          ((q >>> 8) & 0xff00) +
-          ((q & 0xff00) << 8) +
-          ((q & 0xff) << 24));
+  utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out);
+  strm.next_out += len;
+  s.pending_out += len;
+  strm.total_out += len;
+  strm.avail_out -= len;
+  s.pending -= len;
+  if (s.pending === 0) {
+    s.pending_out = 0;
+  }
 }
 
 
-function InflateState() {
-  this.mode = 0;             /* current inflate mode */
-  this.last = false;          /* true if processing last block */
-  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
-  this.havedict = false;      /* true if dictionary provided */
-  this.flags = 0;             /* gzip header method and flags (0 if zlib) */
-  this.dmax = 0;              /* zlib header max distance (INFLATE_STRICT) */
-  this.check = 0;             /* protected copy of check value */
-  this.total = 0;             /* protected copy of output count */
-  // TODO: may be {}
-  this.head = null;           /* where to save gzip header information */
+function flush_block_only (s, last) {
+  trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);
+  s.block_start = s.strstart;
+  flush_pending(s.strm);
+}
 
-  /* sliding window */
-  this.wbits = 0;             /* log base 2 of requested window size */
-  this.wsize = 0;             /* window size or zero if not using window */
-  this.whave = 0;             /* valid bytes in the window */
-  this.wnext = 0;             /* window write index */
-  this.window = null;         /* allocated sliding window, if needed */
 
-  /* bit accumulator */
-  this.hold = 0;              /* input bit accumulator */
-  this.bits = 0;              /* number of bits in "in" */
+function put_byte(s, b) {
+  s.pending_buf[s.pending++] = b;
+}
 
-  /* for string and stored block copying */
-  this.length = 0;            /* literal or length of data to copy */
-  this.offset = 0;            /* distance back to copy string from */
 
-  /* for table and code decoding */
-  this.extra = 0;             /* extra bits needed */
+/* =========================================================================
+ * Put a short in the pending buffer. The 16-bit value is put in MSB order.
+ * IN assertion: the stream state is correct and there is enough room in
+ * pending_buf.
+ */
+function putShortMSB(s, b) {
+//  put_byte(s, (Byte)(b >> 8));
+//  put_byte(s, (Byte)(b & 0xff));
+  s.pending_buf[s.pending++] = (b >>> 8) & 0xff;
+  s.pending_buf[s.pending++] = b & 0xff;
+}
 
-  /* fixed and dynamic code tables */
-  this.lencode = null;          /* starting table for length/literal codes */
-  this.distcode = null;         /* starting table for distance codes */
-  this.lenbits = 0;           /* index bits for lencode */
-  this.distbits = 0;          /* index bits for distcode */
 
-  /* dynamic table building */
-  this.ncode = 0;             /* number of code length code lengths */
-  this.nlen = 0;              /* number of length code lengths */
-  this.ndist = 0;             /* number of distance code lengths */
-  this.have = 0;              /* number of code lengths in lens[] */
-  this.next = null;              /* next available space in codes[] */
+/* ===========================================================================
+ * Read a new buffer from the current input stream, update the adler32
+ * and total number of bytes read.  All deflate() input goes through
+ * this function so some applications may wish to modify it to avoid
+ * allocating a large strm->input buffer and copying from it.
+ * (See also flush_pending()).
+ */
+function read_buf(strm, buf, start, size) {
+  var len = strm.avail_in;
 
-  this.lens = new utils.Buf16(320); /* temporary storage for code lengths */
-  this.work = new utils.Buf16(288); /* work area for code table building */
+  if (len > size) { len = size; }
+  if (len === 0) { return 0; }
 
-  /*
-   because we don't have pointers in js, we use lencode and distcode directly
-   as buffers so we don't need codes
-  */
-  //this.codes = new utils.Buf32(ENOUGH);       /* space for code tables */
-  this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */
-  this.distdyn = null;             /* dynamic table for distance codes (JS specific) */
-  this.sane = 0;                   /* if false, allow invalid distance too far */
-  this.back = 0;                   /* bits back of last unprocessed length/lit */
-  this.was = 0;                    /* initial length of match */
-}
+  strm.avail_in -= len;
 
-function inflateResetKeep(strm) {
-  var state;
+  utils.arraySet(buf, strm.input, strm.next_in, len, start);
+  if (strm.state.wrap === 1) {
+    strm.adler = adler32(strm.adler, buf, len, start);
+  }
 
-  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
-  state = strm.state;
-  strm.total_in = strm.total_out = state.total = 0;
-  strm.msg = ''; /*Z_NULL*/
-  if (state.wrap) {       /* to support ill-conceived Java test suite */
-    strm.adler = state.wrap & 1;
+  else if (strm.state.wrap === 2) {
+    strm.adler = crc32(strm.adler, buf, len, start);
   }
-  state.mode = HEAD;
-  state.last = 0;
-  state.havedict = 0;
-  state.dmax = 32768;
-  state.head = null/*Z_NULL*/;
-  state.hold = 0;
-  state.bits = 0;
-  //state.lencode = state.distcode = state.next = state.codes;
-  state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS);
-  state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS);
 
-  state.sane = 1;
-  state.back = -1;
-  //Tracev((stderr, "inflate: reset\n"));
-  return Z_OK;
+  strm.next_in += len;
+  strm.total_in += len;
+
+  return len;
 }
 
-function inflateReset(strm) {
-  var state;
 
-  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
-  state = strm.state;
-  state.wsize = 0;
-  state.whave = 0;
-  state.wnext = 0;
-  return inflateResetKeep(strm);
+/* ===========================================================================
+ * Set match_start to the longest match starting at the given string and
+ * return its length. Matches shorter or equal to prev_length are discarded,
+ * in which case the result is equal to prev_length and match_start is
+ * garbage.
+ * IN assertions: cur_match is the head of the hash chain for the current
+ *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
+ * OUT assertion: the match length is not greater than s->lookahead.
+ */
+function longest_match(s, cur_match) {
+  var chain_length = s.max_chain_length;      /* max hash chain length */
+  var scan = s.strstart; /* current string */
+  var match;                       /* matched string */
+  var len;                           /* length of current match */
+  var best_len = s.prev_length;              /* best match length so far */
+  var nice_match = s.nice_match;             /* stop if match long enough */
+  var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?
+      s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;
 
-}
+  var _win = s.window; // shortcut
 
-function inflateReset2(strm, windowBits) {
-  var wrap;
-  var state;
+  var wmask = s.w_mask;
+  var prev  = s.prev;
 
-  /* get the state */
-  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
-  state = strm.state;
+  /* Stop when cur_match becomes <= limit. To simplify the code,
+   * we prevent matches with the string of window index 0.
+   */
 
-  /* extract wrap request from windowBits parameter */
-  if (windowBits < 0) {
-    wrap = 0;
-    windowBits = -windowBits;
+  var strend = s.strstart + MAX_MATCH;
+  var scan_end1  = _win[scan + best_len - 1];
+  var scan_end   = _win[scan + best_len];
+
+  /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
+   * It is easy to get rid of this optimization if necessary.
+   */
+  // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
+
+  /* Do not waste too much time if we already have a good match: */
+  if (s.prev_length >= s.good_match) {
+    chain_length >>= 2;
   }
-  else {
-    wrap = (windowBits >> 4) + 1;
-    if (windowBits < 48) {
-      windowBits &= 15;
+  /* Do not look for matches beyond the end of the input. This is necessary
+   * to make deflate deterministic.
+   */
+  if (nice_match > s.lookahead) { nice_match = s.lookahead; }
+
+  // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+
+  do {
+    // Assert(cur_match < s->strstart, "no future");
+    match = cur_match;
+
+    /* Skip to next match if the match length cannot increase
+     * or if the match length is less than 2.  Note that the checks below
+     * for insufficient lookahead only occur occasionally for performance
+     * reasons.  Therefore uninitialized memory will be accessed, and
+     * conditional jumps will be made that depend on those values.
+     * However the length of the match is limited to the lookahead, so
+     * the output of deflate is not affected by the uninitialized values.
+     */
+
+    if (_win[match + best_len]     !== scan_end  ||
+        _win[match + best_len - 1] !== scan_end1 ||
+        _win[match]                !== _win[scan] ||
+        _win[++match]              !== _win[scan + 1]) {
+      continue;
     }
-  }
 
-  /* set number of window bits, free window if different */
-  if (windowBits && (windowBits < 8 || windowBits > 15)) {
-    return Z_STREAM_ERROR;
-  }
-  if (state.window !== null && state.wbits !== windowBits) {
-    state.window = null;
-  }
+    /* The check at best_len-1 can be removed because it will be made
+     * again later. (This heuristic is not always a win.)
+     * It is not necessary to compare scan[2] and match[2] since they
+     * are always equal when the other bytes match, given that
+     * the hash keys are equal and that HASH_BITS >= 8.
+     */
+    scan += 2;
+    match++;
+    // Assert(*scan == *match, "match[2]?");
 
-  /* update state and reset the rest of it */
-  state.wrap = wrap;
-  state.wbits = windowBits;
-  return inflateReset(strm);
-}
+    /* We check for insufficient lookahead only every 8th comparison;
+     * the 256th check will be made at strstart+258.
+     */
+    do {
+      /*jshint noempty:false*/
+    } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
+             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
+             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
+             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
+             scan < strend);
 
-function inflateInit2(strm, windowBits) {
-  var ret;
-  var state;
+    // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
 
-  if (!strm) { return Z_STREAM_ERROR; }
-  //strm.msg = Z_NULL;                 /* in case we return an error */
+    len = MAX_MATCH - (strend - scan);
+    scan = strend - MAX_MATCH;
 
-  state = new InflateState();
+    if (len > best_len) {
+      s.match_start = cur_match;
+      best_len = len;
+      if (len >= nice_match) {
+        break;
+      }
+      scan_end1  = _win[scan + best_len - 1];
+      scan_end   = _win[scan + best_len];
+    }
+  } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);
 
-  //if (state === Z_NULL) return Z_MEM_ERROR;
-  //Tracev((stderr, "inflate: allocated\n"));
-  strm.state = state;
-  state.window = null/*Z_NULL*/;
-  ret = inflateReset2(strm, windowBits);
-  if (ret !== Z_OK) {
-    strm.state = null/*Z_NULL*/;
+  if (best_len <= s.lookahead) {
+    return best_len;
   }
-  return ret;
-}
-
-function inflateInit(strm) {
-  return inflateInit2(strm, DEF_WBITS);
+  return s.lookahead;
 }
 
 
-/*
- Return state with length and distance decoding tables and index sizes set to
- fixed code decoding.  Normally this returns fixed tables from inffixed.h.
- If BUILDFIXED is defined, then instead this routine builds the tables the
- first time it's called, and returns those tables the first time and
- thereafter.  This reduces the size of the code by about 2K bytes, in
- exchange for a little execution time.  However, BUILDFIXED should not be
- used for threaded applications, since the rewriting of the tables and virgin
- may not be thread-safe.
+/* ===========================================================================
+ * Fill the window when the lookahead becomes insufficient.
+ * Updates strstart and lookahead.
+ *
+ * IN assertion: lookahead < MIN_LOOKAHEAD
+ * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
+ *    At least one byte has been read, or avail_in == 0; reads are
+ *    performed for at least two bytes (required for the zip translate_eol
+ *    option -- not supported here).
  */
-var virgin = true;
-
-var lenfix, distfix; // We have no pointers in JS, so keep tables separate
+function fill_window(s) {
+  var _w_size = s.w_size;
+  var p, n, m, more, str;
 
-function fixedtables(state) {
-  /* build fixed huffman tables if first call (may not be thread safe) */
-  if (virgin) {
-    var sym;
+  //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");
 
-    lenfix = new utils.Buf32(512);
-    distfix = new utils.Buf32(32);
+  do {
+    more = s.window_size - s.lookahead - s.strstart;
 
-    /* literal/length table */
-    sym = 0;
-    while (sym < 144) { state.lens[sym++] = 8; }
-    while (sym < 256) { state.lens[sym++] = 9; }
-    while (sym < 280) { state.lens[sym++] = 7; }
-    while (sym < 288) { state.lens[sym++] = 8; }
+    // JS ints have 32 bit, block below not needed
+    /* Deal with !@#$% 64K limit: */
+    //if (sizeof(int) <= 2) {
+    //    if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
+    //        more = wsize;
+    //
+    //  } else if (more == (unsigned)(-1)) {
+    //        /* Very unlikely, but possible on 16 bit machine if
+    //         * strstart == 0 && lookahead == 1 (input done a byte at time)
+    //         */
+    //        more--;
+    //    }
+    //}
 
-    inflate_table(LENS,  state.lens, 0, 288, lenfix,   0, state.work, {bits: 9});
 
-    /* distance table */
-    sym = 0;
-    while (sym < 32) { state.lens[sym++] = 5; }
+    /* If the window is almost full and there is insufficient lookahead,
+     * move the upper half to the lower one to make room in the upper half.
+     */
+    if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {
 
-    inflate_table(DISTS, state.lens, 0, 32,   distfix, 0, state.work, {bits: 5});
+      utils.arraySet(s.window, s.window, _w_size, _w_size, 0);
+      s.match_start -= _w_size;
+      s.strstart -= _w_size;
+      /* we now have strstart >= MAX_DIST */
+      s.block_start -= _w_size;
 
-    /* do this just once */
-    virgin = false;
-  }
+      /* Slide the hash table (could be avoided with 32 bit values
+       at the expense of memory usage). We slide even when level == 0
+       to keep the hash table consistent if we switch back to level > 0
+       later. (Using level 0 permanently is not an optimal usage of
+       zlib, so we don't care about this pathological case.)
+       */
 
-  state.lencode = lenfix;
-  state.lenbits = 9;
-  state.distcode = distfix;
-  state.distbits = 5;
-}
+      n = s.hash_size;
+      p = n;
+      do {
+        m = s.head[--p];
+        s.head[p] = (m >= _w_size ? m - _w_size : 0);
+      } while (--n);
 
+      n = _w_size;
+      p = n;
+      do {
+        m = s.prev[--p];
+        s.prev[p] = (m >= _w_size ? m - _w_size : 0);
+        /* If n is not on any hash chain, prev[n] is garbage but
+         * its value will never be used.
+         */
+      } while (--n);
 
-/*
- Update the window with the last wsize (normally 32K) bytes written before
- returning.  If window does not exist yet, create it.  This is only called
- when a window is already in use, or when output has been written during this
- inflate call, but the end of the deflate stream has not been reached yet.
- It is also called to create a window for dictionary data when a dictionary
- is loaded.
+      more += _w_size;
+    }
+    if (s.strm.avail_in === 0) {
+      break;
+    }
 
- Providing output buffers larger than 32K to inflate() should provide a speed
- advantage, since only the last 32K of output is copied to the sliding window
- upon return from inflate(), and since all distances after the first 32K of
- output will fall in the output data, making match copies simpler and faster.
- The advantage may be dependent on the size of the processor's data caches.
- */
-function updatewindow(strm, src, end, copy) {
-  var dist;
-  var state = strm.state;
+    /* If there was no sliding:
+     *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
+     *    more == window_size - lookahead - strstart
+     * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
+     * => more >= window_size - 2*WSIZE + 2
+     * In the BIG_MEM or MMAP case (not yet supported),
+     *   window_size == input_size + MIN_LOOKAHEAD  &&
+     *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
+     * Otherwise, window_size == 2*WSIZE so more >= 2.
+     * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
+     */
+    //Assert(more >= 2, "more < 2");
+    n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);
+    s.lookahead += n;
 
-  /* if it hasn't been done already, allocate space for the window */
-  if (state.window === null) {
-    state.wsize = 1 << state.wbits;
-    state.wnext = 0;
-    state.whave = 0;
+    /* Initialize the hash value now that we have some input: */
+    if (s.lookahead + s.insert >= MIN_MATCH) {
+      str = s.strstart - s.insert;
+      s.ins_h = s.window[str];
 
-    state.window = new utils.Buf8(state.wsize);
-  }
+      /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */
+      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask;
+//#if MIN_MATCH != 3
+//        Call update_hash() MIN_MATCH-3 more times
+//#endif
+      while (s.insert) {
+        /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
+        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH-1]) & s.hash_mask;
 
-  /* copy state->wsize or less output bytes into the circular window */
-  if (copy >= state.wsize) {
-    utils.arraySet(state.window,src, end - state.wsize, state.wsize, 0);
-    state.wnext = 0;
-    state.whave = state.wsize;
-  }
-  else {
-    dist = state.wsize - state.wnext;
-    if (dist > copy) {
-      dist = copy;
-    }
-    //zmemcpy(state->window + state->wnext, end - copy, dist);
-    utils.arraySet(state.window,src, end - copy, dist, state.wnext);
-    copy -= dist;
-    if (copy) {
-      //zmemcpy(state->window, end - copy, copy);
-      utils.arraySet(state.window,src, end - copy, copy, 0);
-      state.wnext = copy;
-      state.whave = state.wsize;
-    }
-    else {
-      state.wnext += dist;
-      if (state.wnext === state.wsize) { state.wnext = 0; }
-      if (state.whave < state.wsize) { state.whave += dist; }
+        s.prev[str & s.w_mask] = s.head[s.ins_h];
+        s.head[s.ins_h] = str;
+        str++;
+        s.insert--;
+        if (s.lookahead + s.insert < MIN_MATCH) {
+          break;
+        }
+      }
     }
-  }
-  return 0;
-}
-
-function inflate(strm, flush) {
-  var state;
-  var input, output;          // input/output buffers
-  var next;                   /* next input INDEX */
-  var put;                    /* next output INDEX */
-  var have, left;             /* available input and output */
-  var hold;                   /* bit buffer */
-  var bits;                   /* bits in bit buffer */
-  var _in, _out;              /* save starting available input and output */
-  var copy;                   /* number of stored or match bytes to copy */
-  var from;                   /* where to copy match bytes from */
-  var from_source;
-  var here = 0;               /* current decoding table entry */
-  var here_bits, here_op, here_val; // paked "here" denormalized (JS specific)
-  //var last;                   /* parent table entry */
-  var last_bits, last_op, last_val; // paked "last" denormalized (JS specific)
-  var len;                    /* length to copy for repeats, bits to drop */
-  var ret;                    /* return code */
-  var hbuf = new utils.Buf8(4);    /* buffer for gzip header crc calculation */
-  var opts;
+    /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
+     * but this is not important since only literal bytes will be emitted.
+     */
 
-  var n; // temporary var for NEED_BITS
+  } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);
 
-  var order = /* permutation of code lengths */
-    [16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15];
+  /* If the WIN_INIT bytes after the end of the current data have never been
+   * written, then zero those bytes in order to avoid memory check reports of
+   * the use of uninitialized (or uninitialised as Julian writes) bytes by
+   * the longest match routines.  Update the high water mark for the next
+   * time through here.  WIN_INIT is set to MAX_MATCH since the longest match
+   * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
+   */
+//  if (s.high_water < s.window_size) {
+//    var curr = s.strstart + s.lookahead;
+//    var init = 0;
+//
+//    if (s.high_water < curr) {
+//      /* Previous high water mark below current data -- zero WIN_INIT
+//       * bytes or up to end of window, whichever is less.
+//       */
+//      init = s.window_size - curr;
+//      if (init > WIN_INIT)
+//        init = WIN_INIT;
+//      zmemzero(s->window + curr, (unsigned)init);
+//      s->high_water = curr + init;
+//    }
+//    else if (s->high_water < (ulg)curr + WIN_INIT) {
+//      /* High water mark at or above current data, but below current data
+//       * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
+//       * to end of window, whichever is less.
+//       */
+//      init = (ulg)curr + WIN_INIT - s->high_water;
+//      if (init > s->window_size - s->high_water)
+//        init = s->window_size - s->high_water;
+//      zmemzero(s->window + s->high_water, (unsigned)init);
+//      s->high_water += init;
+//    }
+//  }
+//
+//  Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
+//    "not enough room for search");
+}
 
+/* ===========================================================================
+ * Copy without compression as much as possible from the input stream, return
+ * the current block state.
+ * This function does not insert new strings in the dictionary since
+ * uncompressible data is probably not useful. This function is used
+ * only for the level=0 compression option.
+ * NOTE: this function should be optimized to avoid extra copying from
+ * window to pending_buf.
+ */
+function deflate_stored(s, flush) {
+  /* Stored blocks are limited to 0xffff bytes, pending_buf is limited
+   * to pending_buf_size, and each stored block has a 5 byte header:
+   */
+  var max_block_size = 0xffff;
 
-  if (!strm || !strm.state || !strm.output ||
-      (!strm.input && strm.avail_in !== 0)) {
-    return Z_STREAM_ERROR;
+  if (max_block_size > s.pending_buf_size - 5) {
+    max_block_size = s.pending_buf_size - 5;
   }
 
-  state = strm.state;
-  if (state.mode === TYPE) { state.mode = TYPEDO; }    /* skip check */
-
-
-  //--- LOAD() ---
-  put = strm.next_out;
-  output = strm.output;
-  left = strm.avail_out;
-  next = strm.next_in;
-  input = strm.input;
-  have = strm.avail_in;
-  hold = state.hold;
-  bits = state.bits;
-  //---
+  /* Copy as much as possible from input to output: */
+  for (;;) {
+    /* Fill the window as much as possible: */
+    if (s.lookahead <= 1) {
 
-  _in = have;
-  _out = left;
-  ret = Z_OK;
+      //Assert(s->strstart < s->w_size+MAX_DIST(s) ||
+      //  s->block_start >= (long)s->w_size, "slide too late");
+//      if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) ||
+//        s.block_start >= s.w_size)) {
+//        throw  new Error("slide too late");
+//      }
 
-  inf_leave: // goto emulation
-  for (;;) {
-    switch (state.mode) {
-    case HEAD:
-      if (state.wrap === 0) {
-        state.mode = TYPEDO;
-        break;
-      }
-      //=== NEEDBITS(16);
-      while (bits < 16) {
-        if (have === 0) { break inf_leave; }
-        have--;
-        hold += input[next++] << bits;
-        bits += 8;
+      fill_window(s);
+      if (s.lookahead === 0 && flush === Z_NO_FLUSH) {
+        return BS_NEED_MORE;
       }
-      //===//
-      if ((state.wrap & 2) && hold === 0x8b1f) {  /* gzip header */
-        state.check = 0/*crc32(0L, Z_NULL, 0)*/;
-        //=== CRC2(state.check, hold);
-        hbuf[0] = hold & 0xff;
-        hbuf[1] = (hold >>> 8) & 0xff;
-        state.check = crc32(state.check, hbuf, 2, 0);
-        //===//
 
-        //=== INITBITS();
-        hold = 0;
-        bits = 0;
-        //===//
-        state.mode = FLAGS;
+      if (s.lookahead === 0) {
         break;
       }
-      state.flags = 0;           /* expect zlib header */
-      if (state.head) {
-        state.head.done = false;
+      /* flush the current block */
+    }
+    //Assert(s->block_start >= 0L, "block gone");
+//    if (s.block_start < 0) throw new Error("block gone");
+
+    s.strstart += s.lookahead;
+    s.lookahead = 0;
+
+    /* Emit a stored block if pending_buf will be full: */
+    var max_start = s.block_start + max_block_size;
+
+    if (s.strstart === 0 || s.strstart >= max_start) {
+      /* strstart == 0 is possible when wraparound on 16-bit machine */
+      s.lookahead = s.strstart - max_start;
+      s.strstart = max_start;
+      /*** FLUSH_BLOCK(s, 0); ***/
+      flush_block_only(s, false);
+      if (s.strm.avail_out === 0) {
+        return BS_NEED_MORE;
       }
-      if (!(state.wrap & 1) ||   /* check if zlib header allowed */
-        (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {
-        strm.msg = 'incorrect header check';
-        state.mode = BAD;
-        break;
+      /***/
+
+
+    }
+    /* Flush if we may have to slide, otherwise block_start may become
+     * negative and the data will be gone:
+     */
+    if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) {
+      /*** FLUSH_BLOCK(s, 0); ***/
+      flush_block_only(s, false);
+      if (s.strm.avail_out === 0) {
+        return BS_NEED_MORE;
       }
-      if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) {
-        strm.msg = 'unknown compression method';
-        state.mode = BAD;
-        break;
-      }
-      //--- DROPBITS(4) ---//
-      hold >>>= 4;
-      bits -= 4;
-      //---//
-      len = (hold & 0x0f)/*BITS(4)*/ + 8;
-      if (state.wbits === 0) {
-        state.wbits = len;
+      /***/
+    }
+  }
+
+  s.insert = 0;
+
+  if (flush === Z_FINISH) {
+    /*** FLUSH_BLOCK(s, 1); ***/
+    flush_block_only(s, true);
+    if (s.strm.avail_out === 0) {
+      return BS_FINISH_STARTED;
+    }
+    /***/
+    return BS_FINISH_DONE;
+  }
+
+  if (s.strstart > s.block_start) {
+    /*** FLUSH_BLOCK(s, 0); ***/
+    flush_block_only(s, false);
+    if (s.strm.avail_out === 0) {
+      return BS_NEED_MORE;
+    }
+    /***/
+  }
+
+  return BS_NEED_MORE;
+}
+
+/* ===========================================================================
+ * Compress as much as possible from the input stream, return the current
+ * block state.
+ * This function does not perform lazy evaluation of matches and inserts
+ * new strings in the dictionary only for unmatched strings or for short
+ * matches. It is used only for the fast compression options.
+ */
+function deflate_fast(s, flush) {
+  var hash_head;        /* head of the hash chain */
+  var bflush;           /* set if current block must be flushed */
+
+  for (;;) {
+    /* Make sure that we always have enough lookahead, except
+     * at the end of the input file. We need MAX_MATCH bytes
+     * for the next match, plus MIN_MATCH bytes to insert the
+     * string following the next match.
+     */
+    if (s.lookahead < MIN_LOOKAHEAD) {
+      fill_window(s);
+      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
+        return BS_NEED_MORE;
       }
-      else if (len > state.wbits) {
-        strm.msg = 'invalid window size';
-        state.mode = BAD;
-        break;
+      if (s.lookahead === 0) {
+        break; /* flush the current block */
       }
-      state.dmax = 1 << len;
-      //Tracev((stderr, "inflate:   zlib header ok\n"));
-      strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
-      state.mode = hold & 0x200 ? DICTID : TYPE;
-      //=== INITBITS();
-      hold = 0;
-      bits = 0;
-      //===//
-      break;
-    case FLAGS:
-      //=== NEEDBITS(16); */
-      while (bits < 16) {
-        if (have === 0) { break inf_leave; }
-        have--;
-        hold += input[next++] << bits;
-        bits += 8;
+    }
+
+    /* Insert the string window[strstart .. strstart+2] in the
+     * dictionary, and set hash_head to the head of the hash chain:
+     */
+    hash_head = 0/*NIL*/;
+    if (s.lookahead >= MIN_MATCH) {
+      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
+      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
+      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
+      s.head[s.ins_h] = s.strstart;
+      /***/
+    }
+
+    /* Find the longest match, discarding those <= prev_length.
+     * At this point we have always match_length < MIN_MATCH
+     */
+    if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {
+      /* To simplify the code, we prevent matches with the string
+       * of window index 0 (in particular we have to avoid a match
+       * of the string with itself at the start of the input file).
+       */
+      s.match_length = longest_match(s, hash_head);
+      /* longest_match() sets match_start */
+    }
+    if (s.match_length >= MIN_MATCH) {
+      // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only
+
+      /*** _tr_tally_dist(s, s.strstart - s.match_start,
+                     s.match_length - MIN_MATCH, bflush); ***/
+      bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);
+
+      s.lookahead -= s.match_length;
+
+      /* Insert new strings in the hash table only if the match length
+       * is not too large. This saves time but degrades compression.
+       */
+      if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {
+        s.match_length--; /* string at strstart already in table */
+        do {
+          s.strstart++;
+          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
+          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
+          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
+          s.head[s.ins_h] = s.strstart;
+          /***/
+          /* strstart never exceeds WSIZE-MAX_MATCH, so there are
+           * always MIN_MATCH bytes ahead.
+           */
+        } while (--s.match_length !== 0);
+        s.strstart++;
+      } else
+      {
+        s.strstart += s.match_length;
+        s.match_length = 0;
+        s.ins_h = s.window[s.strstart];
+        /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */
+        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask;
+
+//#if MIN_MATCH != 3
+//                Call UPDATE_HASH() MIN_MATCH-3 more times
+//#endif
+        /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
+         * matter since it will be recomputed at next deflate call.
+         */
       }
-      //===//
-      state.flags = hold;
-      if ((state.flags & 0xff) !== Z_DEFLATED) {
-        strm.msg = 'unknown compression method';
-        state.mode = BAD;
-        break;
+    } else {
+      /* No match, output a literal byte */
+      //Tracevv((stderr,"%c", s.window[s.strstart]));
+      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
+      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
+
+      s.lookahead--;
+      s.strstart++;
+    }
+    if (bflush) {
+      /*** FLUSH_BLOCK(s, 0); ***/
+      flush_block_only(s, false);
+      if (s.strm.avail_out === 0) {
+        return BS_NEED_MORE;
       }
-      if (state.flags & 0xe000) {
-        strm.msg = 'unknown header flags set';
-        state.mode = BAD;
-        break;
+      /***/
+    }
+  }
+  s.insert = ((s.strstart < (MIN_MATCH-1)) ? s.strstart : MIN_MATCH-1);
+  if (flush === Z_FINISH) {
+    /*** FLUSH_BLOCK(s, 1); ***/
+    flush_block_only(s, true);
+    if (s.strm.avail_out === 0) {
+      return BS_FINISH_STARTED;
+    }
+    /***/
+    return BS_FINISH_DONE;
+  }
+  if (s.last_lit) {
+    /*** FLUSH_BLOCK(s, 0); ***/
+    flush_block_only(s, false);
+    if (s.strm.avail_out === 0) {
+      return BS_NEED_MORE;
+    }
+    /***/
+  }
+  return BS_BLOCK_DONE;
+}
+
+/* ===========================================================================
+ * Same as above, but achieves better compression. We use a lazy
+ * evaluation for matches: a match is finally adopted only if there is
+ * no better match at the next window position.
+ */
+function deflate_slow(s, flush) {
+  var hash_head;          /* head of hash chain */
+  var bflush;              /* set if current block must be flushed */
+
+  var max_insert;
+
+  /* Process the input block. */
+  for (;;) {
+    /* Make sure that we always have enough lookahead, except
+     * at the end of the input file. We need MAX_MATCH bytes
+     * for the next match, plus MIN_MATCH bytes to insert the
+     * string following the next match.
+     */
+    if (s.lookahead < MIN_LOOKAHEAD) {
+      fill_window(s);
+      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
+        return BS_NEED_MORE;
       }
-      if (state.head) {
-        state.head.text = ((hold >> 8) & 1);
+      if (s.lookahead === 0) { break; } /* flush the current block */
+    }
+
+    /* Insert the string window[strstart .. strstart+2] in the
+     * dictionary, and set hash_head to the head of the hash chain:
+     */
+    hash_head = 0/*NIL*/;
+    if (s.lookahead >= MIN_MATCH) {
+      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
+      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
+      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
+      s.head[s.ins_h] = s.strstart;
+      /***/
+    }
+
+    /* Find the longest match, discarding those <= prev_length.
+     */
+    s.prev_length = s.match_length;
+    s.prev_match = s.match_start;
+    s.match_length = MIN_MATCH-1;
+
+    if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&
+        s.strstart - hash_head <= (s.w_size-MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {
+      /* To simplify the code, we prevent matches with the string
+       * of window index 0 (in particular we have to avoid a match
+       * of the string with itself at the start of the input file).
+       */
+      s.match_length = longest_match(s, hash_head);
+      /* longest_match() sets match_start */
+
+      if (s.match_length <= 5 &&
+         (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {
+
+        /* If prev_match is also MIN_MATCH, match_start is garbage
+         * but we will ignore the current match anyway.
+         */
+        s.match_length = MIN_MATCH-1;
       }
-      if (state.flags & 0x0200) {
-        //=== CRC2(state.check, hold);
-        hbuf[0] = hold & 0xff;
-        hbuf[1] = (hold >>> 8) & 0xff;
-        state.check = crc32(state.check, hbuf, 2, 0);
-        //===//
-      }
-      //=== INITBITS();
-      hold = 0;
-      bits = 0;
-      //===//
-      state.mode = TIME;
-      /* falls through */
-    case TIME:
-      //=== NEEDBITS(32); */
-      while (bits < 32) {
-        if (have === 0) { break inf_leave; }
-        have--;
-        hold += input[next++] << bits;
-        bits += 8;
-      }
-      //===//
-      if (state.head) {
-        state.head.time = hold;
-      }
-      if (state.flags & 0x0200) {
-        //=== CRC4(state.check, hold)
-        hbuf[0] = hold & 0xff;
-        hbuf[1] = (hold >>> 8) & 0xff;
-        hbuf[2] = (hold >>> 16) & 0xff;
-        hbuf[3] = (hold >>> 24) & 0xff;
-        state.check = crc32(state.check, hbuf, 4, 0);
-        //===
+    }
+    /* If there was a match at the previous step and the current
+     * match is not better, output the previous match:
+     */
+    if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {
+      max_insert = s.strstart + s.lookahead - MIN_MATCH;
+      /* Do not insert strings in hash table beyond this. */
+
+      //check_match(s, s.strstart-1, s.prev_match, s.prev_length);
+
+      /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,
+                     s.prev_length - MIN_MATCH, bflush);***/
+      bflush = trees._tr_tally(s, s.strstart - 1- s.prev_match, s.prev_length - MIN_MATCH);
+      /* Insert in hash table all strings up to the end of the match.
+       * strstart-1 and strstart are already inserted. If there is not
+       * enough lookahead, the last two strings are not inserted in
+       * the hash table.
+       */
+      s.lookahead -= s.prev_length-1;
+      s.prev_length -= 2;
+      do {
+        if (++s.strstart <= max_insert) {
+          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
+          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
+          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
+          s.head[s.ins_h] = s.strstart;
+          /***/
+        }
+      } while (--s.prev_length !== 0);
+      s.match_available = 0;
+      s.match_length = MIN_MATCH-1;
+      s.strstart++;
+
+      if (bflush) {
+        /*** FLUSH_BLOCK(s, 0); ***/
+        flush_block_only(s, false);
+        if (s.strm.avail_out === 0) {
+          return BS_NEED_MORE;
+        }
+        /***/
       }
-      //=== INITBITS();
-      hold = 0;
-      bits = 0;
-      //===//
-      state.mode = OS;
-      /* falls through */
-    case OS:
-      //=== NEEDBITS(16); */
-      while (bits < 16) {
-        if (have === 0) { break inf_leave; }
-        have--;
-        hold += input[next++] << bits;
-        bits += 8;
+
+    } else if (s.match_available) {
+      /* If there was no match at the previous position, output a
+       * single literal. If there was a match but the current match
+       * is longer, truncate the previous match to a single literal.
+       */
+      //Tracevv((stderr,"%c", s->window[s->strstart-1]));
+      /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
+      bflush = trees._tr_tally(s, 0, s.window[s.strstart-1]);
+
+      if (bflush) {
+        /*** FLUSH_BLOCK_ONLY(s, 0) ***/
+        flush_block_only(s, false);
+        /***/
       }
-      //===//
-      if (state.head) {
-        state.head.xflags = (hold & 0xff);
-        state.head.os = (hold >> 8);
+      s.strstart++;
+      s.lookahead--;
+      if (s.strm.avail_out === 0) {
+        return BS_NEED_MORE;
       }
-      if (state.flags & 0x0200) {
-        //=== CRC2(state.check, hold);
-        hbuf[0] = hold & 0xff;
-        hbuf[1] = (hold >>> 8) & 0xff;
-        state.check = crc32(state.check, hbuf, 2, 0);
-        //===//
+    } else {
+      /* There is no previous match to compare with, wait for
+       * the next step to decide.
+       */
+      s.match_available = 1;
+      s.strstart++;
+      s.lookahead--;
+    }
+  }
+  //Assert (flush != Z_NO_FLUSH, "no flush?");
+  if (s.match_available) {
+    //Tracevv((stderr,"%c", s->window[s->strstart-1]));
+    /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
+    bflush = trees._tr_tally(s, 0, s.window[s.strstart-1]);
+
+    s.match_available = 0;
+  }
+  s.insert = s.strstart < MIN_MATCH-1 ? s.strstart : MIN_MATCH-1;
+  if (flush === Z_FINISH) {
+    /*** FLUSH_BLOCK(s, 1); ***/
+    flush_block_only(s, true);
+    if (s.strm.avail_out === 0) {
+      return BS_FINISH_STARTED;
+    }
+    /***/
+    return BS_FINISH_DONE;
+  }
+  if (s.last_lit) {
+    /*** FLUSH_BLOCK(s, 0); ***/
+    flush_block_only(s, false);
+    if (s.strm.avail_out === 0) {
+      return BS_NEED_MORE;
+    }
+    /***/
+  }
+
+  return BS_BLOCK_DONE;
+}
+
+
+/* ===========================================================================
+ * For Z_RLE, simply look for runs of bytes, generate matches only of distance
+ * one.  Do not maintain a hash table.  (It will be regenerated if this run of
+ * deflate switches away from Z_RLE.)
+ */
+function deflate_rle(s, flush) {
+  var bflush;            /* set if current block must be flushed */
+  var prev;              /* byte at distance one to match */
+  var scan, strend;      /* scan goes up to strend for length of run */
+
+  var _win = s.window;
+
+  for (;;) {
+    /* Make sure that we always have enough lookahead, except
+     * at the end of the input file. We need MAX_MATCH bytes
+     * for the longest run, plus one for the unrolled loop.
+     */
+    if (s.lookahead <= MAX_MATCH) {
+      fill_window(s);
+      if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) {
+        return BS_NEED_MORE;
       }
-      //=== INITBITS();
-      hold = 0;
-      bits = 0;
-      //===//
-      state.mode = EXLEN;
-      /* falls through */
-    case EXLEN:
-      if (state.flags & 0x0400) {
-        //=== NEEDBITS(16); */
-        while (bits < 16) {
-          if (have === 0) { break inf_leave; }
-          have--;
-          hold += input[next++] << bits;
-          bits += 8;
-        }
-        //===//
-        state.length = hold;
-        if (state.head) {
-          state.head.extra_len = hold;
-        }
-        if (state.flags & 0x0200) {
-          //=== CRC2(state.check, hold);
-          hbuf[0] = hold & 0xff;
-          hbuf[1] = (hold >>> 8) & 0xff;
-          state.check = crc32(state.check, hbuf, 2, 0);
-          //===//
+      if (s.lookahead === 0) { break; } /* flush the current block */
+    }
+
+    /* See how many times the previous byte repeats */
+    s.match_length = 0;
+    if (s.lookahead >= MIN_MATCH && s.strstart > 0) {
+      scan = s.strstart - 1;
+      prev = _win[scan];
+      if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {
+        strend = s.strstart + MAX_MATCH;
+        do {
+          /*jshint noempty:false*/
+        } while (prev === _win[++scan] && prev === _win[++scan] &&
+                 prev === _win[++scan] && prev === _win[++scan] &&
+                 prev === _win[++scan] && prev === _win[++scan] &&
+                 prev === _win[++scan] && prev === _win[++scan] &&
+                 scan < strend);
+        s.match_length = MAX_MATCH - (strend - scan);
+        if (s.match_length > s.lookahead) {
+          s.match_length = s.lookahead;
         }
-        //=== INITBITS();
-        hold = 0;
-        bits = 0;
-        //===//
       }
-      else if (state.head) {
-        state.head.extra = null/*Z_NULL*/;
+      //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
+    }
+
+    /* Emit match if have run of MIN_MATCH or longer, else emit literal */
+    if (s.match_length >= MIN_MATCH) {
+      //check_match(s, s.strstart, s.strstart - 1, s.match_length);
+
+      /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/
+      bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH);
+
+      s.lookahead -= s.match_length;
+      s.strstart += s.match_length;
+      s.match_length = 0;
+    } else {
+      /* No match, output a literal byte */
+      //Tracevv((stderr,"%c", s->window[s->strstart]));
+      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
+      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
+
+      s.lookahead--;
+      s.strstart++;
+    }
+    if (bflush) {
+      /*** FLUSH_BLOCK(s, 0); ***/
+      flush_block_only(s, false);
+      if (s.strm.avail_out === 0) {
+        return BS_NEED_MORE;
       }
-      state.mode = EXTRA;
-      /* falls through */
-    case EXTRA:
-      if (state.flags & 0x0400) {
-        copy = state.length;
-        if (copy > have) { copy = have; }
-        if (copy) {
-          if (state.head) {
-            len = state.head.extra_len - state.length;
-            if (!state.head.extra) {
-              // Use untyped array for more conveniend processing later
-              state.head.extra = new Array(state.head.extra_len);
-            }
-            utils.arraySet(
-              state.head.extra,
-              input,
-              next,
-              // extra field is limited to 65536 bytes
-              // - no need for additional size check
-              copy,
-              /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/
-              len
-            );
-            //zmemcpy(state.head.extra + len, next,
-            //        len + copy > state.head.extra_max ?
-            //        state.head.extra_max - len : copy);
-          }
-          if (state.flags & 0x0200) {
-            state.check = crc32(state.check, input, copy, next);
-          }
-          have -= copy;
-          next += copy;
-          state.length -= copy;
-        }
-        if (state.length) { break inf_leave; }
-      }
-      state.length = 0;
-      state.mode = NAME;
-      /* falls through */
-    case NAME:
-      if (state.flags & 0x0800) {
-        if (have === 0) { break inf_leave; }
-        copy = 0;
-        do {
-          // TODO: 2 or 1 bytes?
-          len = input[next + copy++];
-          /* use constant limit because in js we should not preallocate memory */
-          if (state.head && len &&
-              (state.length < 65536 /*state.head.name_max*/)) {
-            state.head.name += String.fromCharCode(len);
-          }
-        } while (len && copy < have);
+      /***/
+    }
+  }
+  s.insert = 0;
+  if (flush === Z_FINISH) {
+    /*** FLUSH_BLOCK(s, 1); ***/
+    flush_block_only(s, true);
+    if (s.strm.avail_out === 0) {
+      return BS_FINISH_STARTED;
+    }
+    /***/
+    return BS_FINISH_DONE;
+  }
+  if (s.last_lit) {
+    /*** FLUSH_BLOCK(s, 0); ***/
+    flush_block_only(s, false);
+    if (s.strm.avail_out === 0) {
+      return BS_NEED_MORE;
+    }
+    /***/
+  }
+  return BS_BLOCK_DONE;
+}
 
-        if (state.flags & 0x0200) {
-          state.check = crc32(state.check, input, copy, next);
-        }
-        have -= copy;
-        next += copy;
-        if (len) { break inf_leave; }
-      }
-      else if (state.head) {
-        state.head.name = null;
-      }
-      state.length = 0;
-      state.mode = COMMENT;
-      /* falls through */
-    case COMMENT:
-      if (state.flags & 0x1000) {
-        if (have === 0) { break inf_leave; }
-        copy = 0;
-        do {
-          len = input[next + copy++];
-          /* use constant limit because in js we should not preallocate memory */
-          if (state.head && len &&
-              (state.length < 65536 /*state.head.comm_max*/)) {
-            state.head.comment += String.fromCharCode(len);
-          }
-        } while (len && copy < have);
-        if (state.flags & 0x0200) {
-          state.check = crc32(state.check, input, copy, next);
-        }
-        have -= copy;
-        next += copy;
-        if (len) { break inf_leave; }
-      }
-      else if (state.head) {
-        state.head.comment = null;
-      }
-      state.mode = HCRC;
-      /* falls through */
-    case HCRC:
-      if (state.flags & 0x0200) {
-        //=== NEEDBITS(16); */
-        while (bits < 16) {
-          if (have === 0) { break inf_leave; }
-          have--;
-          hold += input[next++] << bits;
-          bits += 8;
-        }
-        //===//
-        if (hold !== (state.check & 0xffff)) {
-          strm.msg = 'header crc mismatch';
-          state.mode = BAD;
-          break;
+/* ===========================================================================
+ * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.
+ * (It will be regenerated if this run of deflate switches away from Huffman.)
+ */
+function deflate_huff(s, flush) {
+  var bflush;             /* set if current block must be flushed */
+
+  for (;;) {
+    /* Make sure that we have a literal to write. */
+    if (s.lookahead === 0) {
+      fill_window(s);
+      if (s.lookahead === 0) {
+        if (flush === Z_NO_FLUSH) {
+          return BS_NEED_MORE;
         }
-        //=== INITBITS();
-        hold = 0;
-        bits = 0;
-        //===//
-      }
-      if (state.head) {
-        state.head.hcrc = ((state.flags >> 9) & 1);
-        state.head.done = true;
-      }
-      strm.adler = state.check = 0 /*crc32(0L, Z_NULL, 0)*/;
-      state.mode = TYPE;
-      break;
-    case DICTID:
-      //=== NEEDBITS(32); */
-      while (bits < 32) {
-        if (have === 0) { break inf_leave; }
-        have--;
-        hold += input[next++] << bits;
-        bits += 8;
-      }
-      //===//
-      strm.adler = state.check = ZSWAP32(hold);
-      //=== INITBITS();
-      hold = 0;
-      bits = 0;
-      //===//
-      state.mode = DICT;
-      /* falls through */
-    case DICT:
-      if (state.havedict === 0) {
-        //--- RESTORE() ---
-        strm.next_out = put;
-        strm.avail_out = left;
-        strm.next_in = next;
-        strm.avail_in = have;
-        state.hold = hold;
-        state.bits = bits;
-        //---
-        return Z_NEED_DICT;
-      }
-      strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
-      state.mode = TYPE;
-      /* falls through */
-    case TYPE:
-      if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; }
-      /* falls through */
-    case TYPEDO:
-      if (state.last) {
-        //--- BYTEBITS() ---//
-        hold >>>= bits & 7;
-        bits -= bits & 7;
-        //---//
-        state.mode = CHECK;
-        break;
-      }
-      //=== NEEDBITS(3); */
-      while (bits < 3) {
-        if (have === 0) { break inf_leave; }
-        have--;
-        hold += input[next++] << bits;
-        bits += 8;
+        break;      /* flush the current block */
       }
-      //===//
-      state.last = (hold & 0x01)/*BITS(1)*/;
-      //--- DROPBITS(1) ---//
-      hold >>>= 1;
-      bits -= 1;
-      //---//
+    }
 
-      switch ((hold & 0x03)/*BITS(2)*/) {
-      case 0:                             /* stored block */
-        //Tracev((stderr, "inflate:     stored block%s\n",
-        //        state.last ? " (last)" : ""));
-        state.mode = STORED;
-        break;
-      case 1:                             /* fixed block */
-        fixedtables(state);
-        //Tracev((stderr, "inflate:     fixed codes block%s\n",
-        //        state.last ? " (last)" : ""));
-        state.mode = LEN_;             /* decode codes */
-        if (flush === Z_TREES) {
-          //--- DROPBITS(2) ---//
-          hold >>>= 2;
-          bits -= 2;
-          //---//
-          break inf_leave;
-        }
-        break;
-      case 2:                             /* dynamic block */
-        //Tracev((stderr, "inflate:     dynamic codes block%s\n",
-        //        state.last ? " (last)" : ""));
-        state.mode = TABLE;
-        break;
-      case 3:
-        strm.msg = 'invalid block type';
-        state.mode = BAD;
+    /* Output a literal byte */
+    s.match_length = 0;
+    //Tracevv((stderr,"%c", s->window[s->strstart]));
+    /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
+    bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
+    s.lookahead--;
+    s.strstart++;
+    if (bflush) {
+      /*** FLUSH_BLOCK(s, 0); ***/
+      flush_block_only(s, false);
+      if (s.strm.avail_out === 0) {
+        return BS_NEED_MORE;
       }
-      //--- DROPBITS(2) ---//
-      hold >>>= 2;
-      bits -= 2;
-      //---//
-      break;
-    case STORED:
-      //--- BYTEBITS() ---// /* go to byte boundary */
-      hold >>>= bits & 7;
-      bits -= bits & 7;
-      //---//
-      //=== NEEDBITS(32); */
+      /***/
+    }
+  }
+  s.insert = 0;
+  if (flush === Z_FINISH) {
+    /*** FLUSH_BLOCK(s, 1); ***/
+    flush_block_only(s, true);
+    if (s.strm.avail_out === 0) {
+      return BS_FINISH_STARTED;
+    }
+    /***/
+    return BS_FINISH_DONE;
+  }
+  if (s.last_lit) {
+    /*** FLUSH_BLOCK(s, 0); ***/
+    flush_block_only(s, false);
+    if (s.strm.avail_out === 0) {
+      return BS_NEED_MORE;
+    }
+    /***/
+  }
+  return BS_BLOCK_DONE;
+}
+
+/* Values for max_lazy_match, good_match and max_chain_length, depending on
+ * the desired pack level (0..9). The values given below have been tuned to
+ * exclude worst case performance for pathological files. Better values may be
+ * found for specific files.
+ */
+var Config = function (good_length, max_lazy, nice_length, max_chain, func) {
+  this.good_length = good_length;
+  this.max_lazy = max_lazy;
+  this.nice_length = nice_length;
+  this.max_chain = max_chain;
+  this.func = func;
+};
+
+var configuration_table;
+
+configuration_table = [
+  /*      good lazy nice chain */
+  new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */
+  new Config(4, 4, 8, 4, deflate_fast),            /* 1 max speed, no lazy matches */
+  new Config(4, 5, 16, 8, deflate_fast),           /* 2 */
+  new Config(4, 6, 32, 32, deflate_fast),          /* 3 */
+
+  new Config(4, 4, 16, 16, deflate_slow),          /* 4 lazy matches */
+  new Config(8, 16, 32, 32, deflate_slow),         /* 5 */
+  new Config(8, 16, 128, 128, deflate_slow),       /* 6 */
+  new Config(8, 32, 128, 256, deflate_slow),       /* 7 */
+  new Config(32, 128, 258, 1024, deflate_slow),    /* 8 */
+  new Config(32, 258, 258, 4096, deflate_slow)     /* 9 max compression */
+];
+
+
+/* ===========================================================================
+ * Initialize the "longest match" routines for a new zlib stream
+ */
+function lm_init(s) {
+  s.window_size = 2 * s.w_size;
+
+  /*** CLEAR_HASH(s); ***/
+  zero(s.head); // Fill with NIL (= 0);
+
+  /* Set the default configuration parameters:
+   */
+  s.max_lazy_match = configuration_table[s.level].max_lazy;
+  s.good_match = configuration_table[s.level].good_length;
+  s.nice_match = configuration_table[s.level].nice_length;
+  s.max_chain_length = configuration_table[s.level].max_chain;
+
+  s.strstart = 0;
+  s.block_start = 0;
+  s.lookahead = 0;
+  s.insert = 0;
+  s.match_length = s.prev_length = MIN_MATCH - 1;
+  s.match_available = 0;
+  s.ins_h = 0;
+}
+
+
+function DeflateState() {
+  this.strm = null;            /* pointer back to this zlib stream */
+  this.status = 0;            /* as the name implies */
+  this.pending_buf = null;      /* output still pending */
+  this.pending_buf_size = 0;  /* size of pending_buf */
+  this.pending_out = 0;       /* next pending byte to output to the stream */
+  this.pending = 0;           /* nb of bytes in the pending buffer */
+  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
+  this.gzhead = null;         /* gzip header information to write */
+  this.gzindex = 0;           /* where in extra, name, or comment */
+  this.method = Z_DEFLATED; /* can only be DEFLATED */
+  this.last_flush = -1;   /* value of flush param for previous deflate call */
+
+  this.w_size = 0;  /* LZ77 window size (32K by default) */
+  this.w_bits = 0;  /* log2(w_size)  (8..16) */
+  this.w_mask = 0;  /* w_size - 1 */
+
+  this.window = null;
+  /* Sliding window. Input bytes are read into the second half of the window,
+   * and move to the first half later to keep a dictionary of at least wSize
+   * bytes. With this organization, matches are limited to a distance of
+   * wSize-MAX_MATCH bytes, but this ensures that IO is always
+   * performed with a length multiple of the block size.
+   */
+
+  this.window_size = 0;
+  /* Actual size of window: 2*wSize, except when the user input buffer
+   * is directly used as sliding window.
+   */
+
+  this.prev = null;
+  /* Link to older string with same hash index. To limit the size of this
+   * array to 64K, this link is maintained only for the last 32K strings.
+   * An index in this array is thus a window index modulo 32K.
+   */
+
+  this.head = null;   /* Heads of the hash chains or NIL. */
+
+  this.ins_h = 0;       /* hash index of string to be inserted */
+  this.hash_size = 0;   /* number of elements in hash table */
+  this.hash_bits = 0;   /* log2(hash_size) */
+  this.hash_mask = 0;   /* hash_size-1 */
+
+  this.hash_shift = 0;
+  /* Number of bits by which ins_h must be shifted at each input
+   * step. It must be such that after MIN_MATCH steps, the oldest
+   * byte no longer takes part in the hash key, that is:
+   *   hash_shift * MIN_MATCH >= hash_bits
+   */
+
+  this.block_start = 0;
+  /* Window position at the beginning of the current output block. Gets
+   * negative when the window is moved backwards.
+   */
+
+  this.match_length = 0;      /* length of best match */
+  this.prev_match = 0;        /* previous match */
+  this.match_available = 0;   /* set if previous match exists */
+  this.strstart = 0;          /* start of string to insert */
+  this.match_start = 0;       /* start of matching string */
+  this.lookahead = 0;         /* number of valid bytes ahead in window */
+
+  this.prev_length = 0;
+  /* Length of the best match at previous step. Matches not greater than this
+   * are discarded. This is used in the lazy match evaluation.
+   */
+
+  this.max_chain_length = 0;
+  /* To speed up deflation, hash chains are never searched beyond this
+   * length.  A higher limit improves compression ratio but degrades the
+   * speed.
+   */
+
+  this.max_lazy_match = 0;
+  /* Attempt to find a better match only when the current match is strictly
+   * smaller than this value. This mechanism is used only for compression
+   * levels >= 4.
+   */
+  // That's alias to max_lazy_match, don't use directly
+  //this.max_insert_length = 0;
+  /* Insert new strings in the hash table only if the match length is not
+   * greater than this length. This saves time but degrades compression.
+   * max_insert_length is used only for compression levels <= 3.
+   */
+
+  this.level = 0;     /* compression level (1..9) */
+  this.strategy = 0;  /* favor or force Huffman coding*/
+
+  this.good_match = 0;
+  /* Use a faster search when the previous match is longer than this */
+
+  this.nice_match = 0; /* Stop searching when current match exceeds this */
+
+              /* used by trees.c: */
+
+  /* Didn't use ct_data typedef below to suppress compiler warning */
+
+  // struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
+  // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
+  // struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */
+
+  // Use flat array of DOUBLE size, with interleaved fata,
+  // because JS does not support effective
+  this.dyn_ltree  = new utils.Buf16(HEAP_SIZE * 2);
+  this.dyn_dtree  = new utils.Buf16((2*D_CODES+1) * 2);
+  this.bl_tree    = new utils.Buf16((2*BL_CODES+1) * 2);
+  zero(this.dyn_ltree);
+  zero(this.dyn_dtree);
+  zero(this.bl_tree);
+
+  this.l_desc   = null;         /* desc. for literal tree */
+  this.d_desc   = null;         /* desc. for distance tree */
+  this.bl_desc  = null;         /* desc. for bit length tree */
+
+  //ush bl_count[MAX_BITS+1];
+  this.bl_count = new utils.Buf16(MAX_BITS+1);
+  /* number of codes at each bit length for an optimal tree */
+
+  //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
+  this.heap = new utils.Buf16(2*L_CODES+1);  /* heap used to build the Huffman trees */
+  zero(this.heap);
+
+  this.heap_len = 0;               /* number of elements in the heap */
+  this.heap_max = 0;               /* element of largest frequency */
+  /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
+   * The same heap array is used to build all trees.
+   */
+
+  this.depth = new utils.Buf16(2*L_CODES+1); //uch depth[2*L_CODES+1];
+  zero(this.depth);
+  /* Depth of each subtree used as tie breaker for trees of equal frequency
+   */
+
+  this.l_buf = 0;          /* buffer index for literals or lengths */
+
+  this.lit_bufsize = 0;
+  /* Size of match buffer for literals/lengths.  There are 4 reasons for
+   * limiting lit_bufsize to 64K:
+   *   - frequencies can be kept in 16 bit counters
+   *   - if compression is not successful for the first block, all input
+   *     data is still in the window so we can still emit a stored block even
+   *     when input comes from standard input.  (This can also be done for
+   *     all blocks if lit_bufsize is not greater than 32K.)
+   *   - if compression is not successful for a file smaller than 64K, we can
+   *     even emit a stored file instead of a stored block (saving 5 bytes).
+   *     This is applicable only for zip (not gzip or zlib).
+   *   - creating new Huffman trees less frequently may not provide fast
+   *     adaptation to changes in the input data statistics. (Take for
+   *     example a binary file with poorly compressible code followed by
+   *     a highly compressible string table.) Smaller buffer sizes give
+   *     fast adaptation but have of course the overhead of transmitting
+   *     trees more frequently.
+   *   - I can't count above 4
+   */
+
+  this.last_lit = 0;      /* running index in l_buf */
+
+  this.d_buf = 0;
+  /* Buffer index for distances. To simplify the code, d_buf and l_buf have
+   * the same number of elements. To use different lengths, an extra flag
+   * array would be necessary.
+   */
+
+  this.opt_len = 0;       /* bit length of current block with optimal trees */
+  this.static_len = 0;    /* bit length of current block with static trees */
+  this.matches = 0;       /* number of string matches in current block */
+  this.insert = 0;        /* bytes at end of window left to insert */
+
+
+  this.bi_buf = 0;
+  /* Output buffer. bits are inserted starting at the bottom (least
+   * significant bits).
+   */
+  this.bi_valid = 0;
+  /* Number of valid bits in bi_buf.  All bits above the last valid bit
+   * are always zero.
+   */
+
+  // Used for window memory init. We safely ignore it for JS. That makes
+  // sense only for pointers and memory check tools.
+  //this.high_water = 0;
+  /* High water mark offset in window for initialized bytes -- bytes above
+   * this are set to zero in order to avoid memory check warnings when
+   * longest match routines access bytes past the input.  This is then
+   * updated to the new high water mark.
+   */
+}
+
+
+function deflateResetKeep(strm) {
+  var s;
+
+  if (!strm || !strm.state) {
+    return err(strm, Z_STREAM_ERROR);
+  }
+
+  strm.total_in = strm.total_out = 0;
+  strm.data_type = Z_UNKNOWN;
+
+  s = strm.state;
+  s.pending = 0;
+  s.pending_out = 0;
+
+  if (s.wrap < 0) {
+    s.wrap = -s.wrap;
+    /* was made negative by deflate(..., Z_FINISH); */
+  }
+  s.status = (s.wrap ? INIT_STATE : BUSY_STATE);
+  strm.adler = (s.wrap === 2) ?
+    0  // crc32(0, Z_NULL, 0)
+  :
+    1; // adler32(0, Z_NULL, 0)
+  s.last_flush = Z_NO_FLUSH;
+  trees._tr_init(s);
+  return Z_OK;
+}
+
+
+function deflateReset(strm) {
+  var ret = deflateResetKeep(strm);
+  if (ret === Z_OK) {
+    lm_init(strm.state);
+  }
+  return ret;
+}
+
+
+function deflateSetHeader(strm, head) {
+  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
+  if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; }
+  strm.state.gzhead = head;
+  return Z_OK;
+}
+
+
+function deflateInit2(strm, level, method, windowBits, memLevel, strategy) {
+  if (!strm) { // === Z_NULL
+    return Z_STREAM_ERROR;
+  }
+  var wrap = 1;
+
+  if (level === Z_DEFAULT_COMPRESSION) {
+    level = 6;
+  }
+
+  if (windowBits < 0) { /* suppress zlib wrapper */
+    wrap = 0;
+    windowBits = -windowBits;
+  }
+
+  else if (windowBits > 15) {
+    wrap = 2;           /* write gzip wrapper instead */
+    windowBits -= 16;
+  }
+
+
+  if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED ||
+    windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
+    strategy < 0 || strategy > Z_FIXED) {
+    return err(strm, Z_STREAM_ERROR);
+  }
+
+
+  if (windowBits === 8) {
+    windowBits = 9;
+  }
+  /* until 256-byte window bug fixed */
+
+  var s = new DeflateState();
+
+  strm.state = s;
+  s.strm = strm;
+
+  s.wrap = wrap;
+  s.gzhead = null;
+  s.w_bits = windowBits;
+  s.w_size = 1 << s.w_bits;
+  s.w_mask = s.w_size - 1;
+
+  s.hash_bits = memLevel + 7;
+  s.hash_size = 1 << s.hash_bits;
+  s.hash_mask = s.hash_size - 1;
+  s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);
+
+  s.window = new utils.Buf8(s.w_size * 2);
+  s.head = new utils.Buf16(s.hash_size);
+  s.prev = new utils.Buf16(s.w_size);
+
+  // Don't need mem init magic for JS.
+  //s.high_water = 0;  /* nothing written to s->window yet */
+
+  s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */
+
+  s.pending_buf_size = s.lit_bufsize * 4;
+  s.pending_buf = new utils.Buf8(s.pending_buf_size);
+
+  s.d_buf = s.lit_bufsize >> 1;
+  s.l_buf = (1 + 2) * s.lit_bufsize;
+
+  s.level = level;
+  s.strategy = strategy;
+  s.method = method;
+
+  return deflateReset(strm);
+}
+
+function deflateInit(strm, level) {
+  return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);
+}
+
+
+function deflate(strm, flush) {
+  var old_flush, s;
+  var beg, val; // for gzip header write only
+
+  if (!strm || !strm.state ||
+    flush > Z_BLOCK || flush < 0) {
+    return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR;
+  }
+
+  s = strm.state;
+
+  if (!strm.output ||
+      (!strm.input && strm.avail_in !== 0) ||
+      (s.status === FINISH_STATE && flush !== Z_FINISH)) {
+    return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR);
+  }
+
+  s.strm = strm; /* just in case */
+  old_flush = s.last_flush;
+  s.last_flush = flush;
+
+  /* Write the header */
+  if (s.status === INIT_STATE) {
+
+    if (s.wrap === 2) { // GZIP header
+      strm.adler = 0;  //crc32(0L, Z_NULL, 0);
+      put_byte(s, 31);
+      put_byte(s, 139);
+      put_byte(s, 8);
+      if (!s.gzhead) { // s->gzhead == Z_NULL
+        put_byte(s, 0);
+        put_byte(s, 0);
+        put_byte(s, 0);
+        put_byte(s, 0);
+        put_byte(s, 0);
+        put_byte(s, s.level === 9 ? 2 :
+                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
+                     4 : 0));
+        put_byte(s, OS_CODE);
+        s.status = BUSY_STATE;
+      }
+      else {
+        put_byte(s, (s.gzhead.text ? 1 : 0) +
+                    (s.gzhead.hcrc ? 2 : 0) +
+                    (!s.gzhead.extra ? 0 : 4) +
+                    (!s.gzhead.name ? 0 : 8) +
+                    (!s.gzhead.comment ? 0 : 16)
+                );
+        put_byte(s, s.gzhead.time & 0xff);
+        put_byte(s, (s.gzhead.time >> 8) & 0xff);
+        put_byte(s, (s.gzhead.time >> 16) & 0xff);
+        put_byte(s, (s.gzhead.time >> 24) & 0xff);
+        put_byte(s, s.level === 9 ? 2 :
+                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
+                     4 : 0));
+        put_byte(s, s.gzhead.os & 0xff);
+        if (s.gzhead.extra && s.gzhead.extra.length) {
+          put_byte(s, s.gzhead.extra.length & 0xff);
+          put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);
+        }
+        if (s.gzhead.hcrc) {
+          strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0);
+        }
+        s.gzindex = 0;
+        s.status = EXTRA_STATE;
+      }
+    }
+    else // DEFLATE header
+    {
+      var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8;
+      var level_flags = -1;
+
+      if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {
+        level_flags = 0;
+      } else if (s.level < 6) {
+        level_flags = 1;
+      } else if (s.level === 6) {
+        level_flags = 2;
+      } else {
+        level_flags = 3;
+      }
+      header |= (level_flags << 6);
+      if (s.strstart !== 0) { header |= PRESET_DICT; }
+      header += 31 - (header % 31);
+
+      s.status = BUSY_STATE;
+      putShortMSB(s, header);
+
+      /* Save the adler32 of the preset dictionary: */
+      if (s.strstart !== 0) {
+        putShortMSB(s, strm.adler >>> 16);
+        putShortMSB(s, strm.adler & 0xffff);
+      }
+      strm.adler = 1; // adler32(0L, Z_NULL, 0);
+    }
+  }
+
+//#ifdef GZIP
+  if (s.status === EXTRA_STATE) {
+    if (s.gzhead.extra/* != Z_NULL*/) {
+      beg = s.pending;  /* start of bytes to update crc */
+
+      while (s.gzindex < (s.gzhead.extra.length & 0xffff)) {
+        if (s.pending === s.pending_buf_size) {
+          if (s.gzhead.hcrc && s.pending > beg) {
+            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
+          }
+          flush_pending(strm);
+          beg = s.pending;
+          if (s.pending === s.pending_buf_size) {
+            break;
+          }
+        }
+        put_byte(s, s.gzhead.extra[s.gzindex] & 0xff);
+        s.gzindex++;
+      }
+      if (s.gzhead.hcrc && s.pending > beg) {
+        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
+      }
+      if (s.gzindex === s.gzhead.extra.length) {
+        s.gzindex = 0;
+        s.status = NAME_STATE;
+      }
+    }
+    else {
+      s.status = NAME_STATE;
+    }
+  }
+  if (s.status === NAME_STATE) {
+    if (s.gzhead.name/* != Z_NULL*/) {
+      beg = s.pending;  /* start of bytes to update crc */
+      //int val;
+
+      do {
+        if (s.pending === s.pending_buf_size) {
+          if (s.gzhead.hcrc && s.pending > beg) {
+            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
+          }
+          flush_pending(strm);
+          beg = s.pending;
+          if (s.pending === s.pending_buf_size) {
+            val = 1;
+            break;
+          }
+        }
+        // JS specific: little magic to add zero terminator to end of string
+        if (s.gzindex < s.gzhead.name.length) {
+          val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;
+        } else {
+          val = 0;
+        }
+        put_byte(s, val);
+      } while (val !== 0);
+
+      if (s.gzhead.hcrc && s.pending > beg) {
+        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
+      }
+      if (val === 0) {
+        s.gzindex = 0;
+        s.status = COMMENT_STATE;
+      }
+    }
+    else {
+      s.status = COMMENT_STATE;
+    }
+  }
+  if (s.status === COMMENT_STATE) {
+    if (s.gzhead.comment/* != Z_NULL*/) {
+      beg = s.pending;  /* start of bytes to update crc */
+      //int val;
+
+      do {
+        if (s.pending === s.pending_buf_size) {
+          if (s.gzhead.hcrc && s.pending > beg) {
+            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
+          }
+          flush_pending(strm);
+          beg = s.pending;
+          if (s.pending === s.pending_buf_size) {
+            val = 1;
+            break;
+          }
+        }
+        // JS specific: little magic to add zero terminator to end of string
+        if (s.gzindex < s.gzhead.comment.length) {
+          val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;
+        } else {
+          val = 0;
+        }
+        put_byte(s, val);
+      } while (val !== 0);
+
+      if (s.gzhead.hcrc && s.pending > beg) {
+        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
+      }
+      if (val === 0) {
+        s.status = HCRC_STATE;
+      }
+    }
+    else {
+      s.status = HCRC_STATE;
+    }
+  }
+  if (s.status === HCRC_STATE) {
+    if (s.gzhead.hcrc) {
+      if (s.pending + 2 > s.pending_buf_size) {
+        flush_pending(strm);
+      }
+      if (s.pending + 2 <= s.pending_buf_size) {
+        put_byte(s, strm.adler & 0xff);
+        put_byte(s, (strm.adler >> 8) & 0xff);
+        strm.adler = 0; //crc32(0L, Z_NULL, 0);
+        s.status = BUSY_STATE;
+      }
+    }
+    else {
+      s.status = BUSY_STATE;
+    }
+  }
+//#endif
+
+  /* Flush as much pending output as possible */
+  if (s.pending !== 0) {
+    flush_pending(strm);
+    if (strm.avail_out === 0) {
+      /* Since avail_out is 0, deflate will be called again with
+       * more output space, but possibly with both pending and
+       * avail_in equal to zero. There won't be anything to do,
+       * but this is not an error situation so make sure we
+       * return OK instead of BUF_ERROR at next call of deflate:
+       */
+      s.last_flush = -1;
+      return Z_OK;
+    }
+
+    /* Make sure there is something to do and avoid duplicate consecutive
+     * flushes. For repeated and useless calls with Z_FINISH, we keep
+     * returning Z_STREAM_END instead of Z_BUF_ERROR.
+     */
+  } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&
+    flush !== Z_FINISH) {
+    return err(strm, Z_BUF_ERROR);
+  }
+
+  /* User must not provide more input after the first FINISH: */
+  if (s.status === FINISH_STATE && strm.avail_in !== 0) {
+    return err(strm, Z_BUF_ERROR);
+  }
+
+  /* Start a new block or continue the current one.
+   */
+  if (strm.avail_in !== 0 || s.lookahead !== 0 ||
+    (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) {
+    var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) :
+      (s.strategy === Z_RLE ? deflate_rle(s, flush) :
+        configuration_table[s.level].func(s, flush));
+
+    if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {
+      s.status = FINISH_STATE;
+    }
+    if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {
+      if (strm.avail_out === 0) {
+        s.last_flush = -1;
+        /* avoid BUF_ERROR next call, see above */
+      }
+      return Z_OK;
+      /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
+       * of deflate should use the same flush parameter to make sure
+       * that the flush is complete. So we don't have to output an
+       * empty block here, this will be done at next call. This also
+       * ensures that for a very small output buffer, we emit at most
+       * one empty block.
+       */
+    }
+    if (bstate === BS_BLOCK_DONE) {
+      if (flush === Z_PARTIAL_FLUSH) {
+        trees._tr_align(s);
+      }
+      else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */
+
+        trees._tr_stored_block(s, 0, 0, false);
+        /* For a full flush, this empty block will be recognized
+         * as a special marker by inflate_sync().
+         */
+        if (flush === Z_FULL_FLUSH) {
+          /*** CLEAR_HASH(s); ***/             /* forget history */
+          zero(s.head); // Fill with NIL (= 0);
+
+          if (s.lookahead === 0) {
+            s.strstart = 0;
+            s.block_start = 0;
+            s.insert = 0;
+          }
+        }
+      }
+      flush_pending(strm);
+      if (strm.avail_out === 0) {
+        s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */
+        return Z_OK;
+      }
+    }
+  }
+  //Assert(strm->avail_out > 0, "bug2");
+  //if (strm.avail_out <= 0) { throw new Error("bug2");}
+
+  if (flush !== Z_FINISH) { return Z_OK; }
+  if (s.wrap <= 0) { return Z_STREAM_END; }
+
+  /* Write the trailer */
+  if (s.wrap === 2) {
+    put_byte(s, strm.adler & 0xff);
+    put_byte(s, (strm.adler >> 8) & 0xff);
+    put_byte(s, (strm.adler >> 16) & 0xff);
+    put_byte(s, (strm.adler >> 24) & 0xff);
+    put_byte(s, strm.total_in & 0xff);
+    put_byte(s, (strm.total_in >> 8) & 0xff);
+    put_byte(s, (strm.total_in >> 16) & 0xff);
+    put_byte(s, (strm.total_in >> 24) & 0xff);
+  }
+  else
+  {
+    putShortMSB(s, strm.adler >>> 16);
+    putShortMSB(s, strm.adler & 0xffff);
+  }
+
+  flush_pending(strm);
+  /* If avail_out is zero, the application will call deflate again
+   * to flush the rest.
+   */
+  if (s.wrap > 0) { s.wrap = -s.wrap; }
+  /* write the trailer only once! */
+  return s.pending !== 0 ? Z_OK : Z_STREAM_END;
+}
+
+function deflateEnd(strm) {
+  var status;
+
+  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
+    return Z_STREAM_ERROR;
+  }
+
+  status = strm.state.status;
+  if (status !== INIT_STATE &&
+    status !== EXTRA_STATE &&
+    status !== NAME_STATE &&
+    status !== COMMENT_STATE &&
+    status !== HCRC_STATE &&
+    status !== BUSY_STATE &&
+    status !== FINISH_STATE
+  ) {
+    return err(strm, Z_STREAM_ERROR);
+  }
+
+  strm.state = null;
+
+  return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK;
+}
+
+/* =========================================================================
+ * Copy the source state to the destination state
+ */
+//function deflateCopy(dest, source) {
+//
+//}
+
+exports.deflateInit = deflateInit;
+exports.deflateInit2 = deflateInit2;
+exports.deflateReset = deflateReset;
+exports.deflateResetKeep = deflateResetKeep;
+exports.deflateSetHeader = deflateSetHeader;
+exports.deflate = deflate;
+exports.deflateEnd = deflateEnd;
+exports.deflateInfo = 'pako deflate (from Nodeca project)';
+
+/* Not implemented
+exports.deflateBound = deflateBound;
+exports.deflateCopy = deflateCopy;
+exports.deflateSetDictionary = deflateSetDictionary;
+exports.deflateParams = deflateParams;
+exports.deflatePending = deflatePending;
+exports.deflatePrime = deflatePrime;
+exports.deflateTune = deflateTune;
+*/
+
+},{"../utils/common":20,"./adler32":22,"./crc32":24,"./messages":30,"./trees":31}],26:[function(require,module,exports){
+'use strict';
+
+
+function GZheader() {
+  /* true if compressed data believed to be text */
+  this.text       = 0;
+  /* modification time */
+  this.time       = 0;
+  /* extra flags (not used when writing a gzip file) */
+  this.xflags     = 0;
+  /* operating system */
+  this.os         = 0;
+  /* pointer to extra field or Z_NULL if none */
+  this.extra      = null;
+  /* extra field length (valid if extra != Z_NULL) */
+  this.extra_len  = 0; // Actually, we don't need it in JS,
+                       // but leave for few code modifications
+
+  //
+  // Setup limits is not necessary because in js we should not preallocate memory
+  // for inflate use constant limit in 65536 bytes
+  //
+
+  /* space at extra (only when reading header) */
+  // this.extra_max  = 0;
+  /* pointer to zero-terminated file name or Z_NULL */
+  this.name       = '';
+  /* space at name (only when reading header) */
+  // this.name_max   = 0;
+  /* pointer to zero-terminated comment or Z_NULL */
+  this.comment    = '';
+  /* space at comment (only when reading header) */
+  // this.comm_max   = 0;
+  /* true if there was or will be a header crc */
+  this.hcrc       = 0;
+  /* true when done reading gzip header (not used when writing a gzip file) */
+  this.done       = false;
+}
+
+module.exports = GZheader;
+
+},{}],27:[function(require,module,exports){
+'use strict';
+
+// See state defs from inflate.js
+var BAD = 30;       /* got a data error -- remain here until reset */
+var TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
+
+/*
+   Decode literal, length, and distance codes and write out the resulting
+   literal and match bytes until either not enough input or output is
+   available, an end-of-block is encountered, or a data error is encountered.
+   When large enough input and output buffers are supplied to inflate(), for
+   example, a 16K input buffer and a 64K output buffer, more than 95% of the
+   inflate execution time is spent in this routine.
+
+   Entry assumptions:
+
+        state.mode === LEN
+        strm.avail_in >= 6
+        strm.avail_out >= 258
+        start >= strm.avail_out
+        state.bits < 8
+
+   On return, state.mode is one of:
+
+        LEN -- ran out of enough output space or enough available input
+        TYPE -- reached end of block code, inflate() to interpret next block
+        BAD -- error in block data
+
+   Notes:
+
+    - The maximum input bits used by a length/distance pair is 15 bits for the
+      length code, 5 bits for the length extra, 15 bits for the distance code,
+      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
+      Therefore if strm.avail_in >= 6, then there is enough input to avoid
+      checking for available input while decoding.
+
+    - The maximum bytes that a single length/distance pair can output is 258
+      bytes, which is the maximum length that can be coded.  inflate_fast()
+      requires strm.avail_out >= 258 for each loop to avoid checking for
+      output space.
+ */
+module.exports = function inflate_fast(strm, start) {
+  var state;
+  var _in;                    /* local strm.input */
+  var last;                   /* have enough input while in < last */
+  var _out;                   /* local strm.output */
+  var beg;                    /* inflate()'s initial strm.output */
+  var end;                    /* while out < end, enough space available */
+//#ifdef INFLATE_STRICT
+  var dmax;                   /* maximum distance from zlib header */
+//#endif
+  var wsize;                  /* window size or zero if not using window */
+  var whave;                  /* valid bytes in the window */
+  var wnext;                  /* window write index */
+  var window;                 /* allocated sliding window, if wsize != 0 */
+  var hold;                   /* local strm.hold */
+  var bits;                   /* local strm.bits */
+  var lcode;                  /* local strm.lencode */
+  var dcode;                  /* local strm.distcode */
+  var lmask;                  /* mask for first level of length codes */
+  var dmask;                  /* mask for first level of distance codes */
+  var here;                   /* retrieved table entry */
+  var op;                     /* code bits, operation, extra bits, or */
+                              /*  window position, window bytes to copy */
+  var len;                    /* match length, unused bytes */
+  var dist;                   /* match distance */
+  var from;                   /* where to copy match from */
+  var from_source;
+
+
+  var input, output; // JS specific, because we have no pointers
+
+  /* copy state to local variables */
+  state = strm.state;
+  //here = state.here;
+  _in = strm.next_in;
+  input = strm.input;
+  last = _in + (strm.avail_in - 5);
+  _out = strm.next_out;
+  output = strm.output;
+  beg = _out - (start - strm.avail_out);
+  end = _out + (strm.avail_out - 257);
+//#ifdef INFLATE_STRICT
+  dmax = state.dmax;
+//#endif
+  wsize = state.wsize;
+  whave = state.whave;
+  wnext = state.wnext;
+  window = state.window;
+  hold = state.hold;
+  bits = state.bits;
+  lcode = state.lencode;
+  dcode = state.distcode;
+  lmask = (1 << state.lenbits) - 1;
+  dmask = (1 << state.distbits) - 1;
+
+
+  /* decode literals and length/distances until end-of-block or not enough
+     input data or output space */
+
+  top:
+  do {
+    if (bits < 15) {
+      hold += input[_in++] << bits;
+      bits += 8;
+      hold += input[_in++] << bits;
+      bits += 8;
+    }
+
+    here = lcode[hold & lmask];
+
+    dolen:
+    for (;;) { // Goto emulation
+      op = here >>> 24/*here.bits*/;
+      hold >>>= op;
+      bits -= op;
+      op = (here >>> 16) & 0xff/*here.op*/;
+      if (op === 0) {                          /* literal */
+        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
+        //        "inflate:         literal '%c'\n" :
+        //        "inflate:         literal 0x%02x\n", here.val));
+        output[_out++] = here & 0xffff/*here.val*/;
+      }
+      else if (op & 16) {                     /* length base */
+        len = here & 0xffff/*here.val*/;
+        op &= 15;                           /* number of extra bits */
+        if (op) {
+          if (bits < op) {
+            hold += input[_in++] << bits;
+            bits += 8;
+          }
+          len += hold & ((1 << op) - 1);
+          hold >>>= op;
+          bits -= op;
+        }
+        //Tracevv((stderr, "inflate:         length %u\n", len));
+        if (bits < 15) {
+          hold += input[_in++] << bits;
+          bits += 8;
+          hold += input[_in++] << bits;
+          bits += 8;
+        }
+        here = dcode[hold & dmask];
+
+        dodist:
+        for (;;) { // goto emulation
+          op = here >>> 24/*here.bits*/;
+          hold >>>= op;
+          bits -= op;
+          op = (here >>> 16) & 0xff/*here.op*/;
+
+          if (op & 16) {                      /* distance base */
+            dist = here & 0xffff/*here.val*/;
+            op &= 15;                       /* number of extra bits */
+            if (bits < op) {
+              hold += input[_in++] << bits;
+              bits += 8;
+              if (bits < op) {
+                hold += input[_in++] << bits;
+                bits += 8;
+              }
+            }
+            dist += hold & ((1 << op) - 1);
+//#ifdef INFLATE_STRICT
+            if (dist > dmax) {
+              strm.msg = 'invalid distance too far back';
+              state.mode = BAD;
+              break top;
+            }
+//#endif
+            hold >>>= op;
+            bits -= op;
+            //Tracevv((stderr, "inflate:         distance %u\n", dist));
+            op = _out - beg;                /* max distance in output */
+            if (dist > op) {                /* see if copy from window */
+              op = dist - op;               /* distance back in window */
+              if (op > whave) {
+                if (state.sane) {
+                  strm.msg = 'invalid distance too far back';
+                  state.mode = BAD;
+                  break top;
+                }
+
+// (!) This block is disabled in zlib defailts,
+// don't enable it for binary compatibility
+//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
+//                if (len <= op - whave) {
+//                  do {
+//                    output[_out++] = 0;
+//                  } while (--len);
+//                  continue top;
+//                }
+//                len -= op - whave;
+//                do {
+//                  output[_out++] = 0;
+//                } while (--op > whave);
+//                if (op === 0) {
+//                  from = _out - dist;
+//                  do {
+//                    output[_out++] = output[from++];
+//                  } while (--len);
+//                  continue top;
+//                }
+//#endif
+              }
+              from = 0; // window index
+              from_source = window;
+              if (wnext === 0) {           /* very common case */
+                from += wsize - op;
+                if (op < len) {         /* some from window */
+                  len -= op;
+                  do {
+                    output[_out++] = window[from++];
+                  } while (--op);
+                  from = _out - dist;  /* rest from output */
+                  from_source = output;
+                }
+              }
+              else if (wnext < op) {      /* wrap around window */
+                from += wsize + wnext - op;
+                op -= wnext;
+                if (op < len) {         /* some from end of window */
+                  len -= op;
+                  do {
+                    output[_out++] = window[from++];
+                  } while (--op);
+                  from = 0;
+                  if (wnext < len) {  /* some from start of window */
+                    op = wnext;
+                    len -= op;
+                    do {
+                      output[_out++] = window[from++];
+                    } while (--op);
+                    from = _out - dist;      /* rest from output */
+                    from_source = output;
+                  }
+                }
+              }
+              else {                      /* contiguous in window */
+                from += wnext - op;
+                if (op < len) {         /* some from window */
+                  len -= op;
+                  do {
+                    output[_out++] = window[from++];
+                  } while (--op);
+                  from = _out - dist;  /* rest from output */
+                  from_source = output;
+                }
+              }
+              while (len > 2) {
+                output[_out++] = from_source[from++];
+                output[_out++] = from_source[from++];
+                output[_out++] = from_source[from++];
+                len -= 3;
+              }
+              if (len) {
+                output[_out++] = from_source[from++];
+                if (len > 1) {
+                  output[_out++] = from_source[from++];
+                }
+              }
+            }
+            else {
+              from = _out - dist;          /* copy direct from output */
+              do {                        /* minimum length is three */
+                output[_out++] = output[from++];
+                output[_out++] = output[from++];
+                output[_out++] = output[from++];
+                len -= 3;
+              } while (len > 2);
+              if (len) {
+                output[_out++] = output[from++];
+                if (len > 1) {
+                  output[_out++] = output[from++];
+                }
+              }
+            }
+          }
+          else if ((op & 64) === 0) {          /* 2nd level distance code */
+            here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
+            continue dodist;
+          }
+          else {
+            strm.msg = 'invalid distance code';
+            state.mode = BAD;
+            break top;
+          }
+
+          break; // need to emulate goto via "continue"
+        }
+      }
+      else if ((op & 64) === 0) {              /* 2nd level length code */
+        here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
+        continue dolen;
+      }
+      else if (op & 32) {                     /* end-of-block */
+        //Tracevv((stderr, "inflate:         end of block\n"));
+        state.mode = TYPE;
+        break top;
+      }
+      else {
+        strm.msg = 'invalid literal/length code';
+        state.mode = BAD;
+        break top;
+      }
+
+      break; // need to emulate goto via "continue"
+    }
+  } while (_in < last && _out < end);
+
+  /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
+  len = bits >> 3;
+  _in -= len;
+  bits -= len << 3;
+  hold &= (1 << bits) - 1;
+
+  /* update state and return */
+  strm.next_in = _in;
+  strm.next_out = _out;
+  strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));
+  strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));
+  state.hold = hold;
+  state.bits = bits;
+  return;
+};
+
+},{}],28:[function(require,module,exports){
+'use strict';
+
+
+var utils = require('../utils/common');
+var adler32 = require('./adler32');
+var crc32   = require('./crc32');
+var inflate_fast = require('./inffast');
+var inflate_table = require('./inftrees');
+
+var CODES = 0;
+var LENS = 1;
+var DISTS = 2;
+
+/* Public constants ==========================================================*/
+/* ===========================================================================*/
+
+
+/* Allowed flush values; see deflate() and inflate() below for details */
+//var Z_NO_FLUSH      = 0;
+//var Z_PARTIAL_FLUSH = 1;
+//var Z_SYNC_FLUSH    = 2;
+//var Z_FULL_FLUSH    = 3;
+var Z_FINISH        = 4;
+var Z_BLOCK         = 5;
+var Z_TREES         = 6;
+
+
+/* Return codes for the compression/decompression functions. Negative values
+ * are errors, positive values are used for special but normal events.
+ */
+var Z_OK            = 0;
+var Z_STREAM_END    = 1;
+var Z_NEED_DICT     = 2;
+//var Z_ERRNO         = -1;
+var Z_STREAM_ERROR  = -2;
+var Z_DATA_ERROR    = -3;
+var Z_MEM_ERROR     = -4;
+var Z_BUF_ERROR     = -5;
+//var Z_VERSION_ERROR = -6;
+
+/* The deflate compression method */
+var Z_DEFLATED  = 8;
+
+
+/* STATES ====================================================================*/
+/* ===========================================================================*/
+
+
+var    HEAD = 1;       /* i: waiting for magic header */
+var    FLAGS = 2;      /* i: waiting for method and flags (gzip) */
+var    TIME = 3;       /* i: waiting for modification time (gzip) */
+var    OS = 4;         /* i: waiting for extra flags and operating system (gzip) */
+var    EXLEN = 5;      /* i: waiting for extra length (gzip) */
+var    EXTRA = 6;      /* i: waiting for extra bytes (gzip) */
+var    NAME = 7;       /* i: waiting for end of file name (gzip) */
+var    COMMENT = 8;    /* i: waiting for end of comment (gzip) */
+var    HCRC = 9;       /* i: waiting for header crc (gzip) */
+var    DICTID = 10;    /* i: waiting for dictionary check value */
+var    DICT = 11;      /* waiting for inflateSetDictionary() call */
+var        TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
+var        TYPEDO = 13;    /* i: same, but skip check to exit inflate on new block */
+var        STORED = 14;    /* i: waiting for stored size (length and complement) */
+var        COPY_ = 15;     /* i/o: same as COPY below, but only first time in */
+var        COPY = 16;      /* i/o: waiting for input or output to copy stored block */
+var        TABLE = 17;     /* i: waiting for dynamic block table lengths */
+var        LENLENS = 18;   /* i: waiting for code length code lengths */
+var        CODELENS = 19;  /* i: waiting for length/lit and distance code lengths */
+var            LEN_ = 20;      /* i: same as LEN below, but only first time in */
+var            LEN = 21;       /* i: waiting for length/lit/eob code */
+var            LENEXT = 22;    /* i: waiting for length extra bits */
+var            DIST = 23;      /* i: waiting for distance code */
+var            DISTEXT = 24;   /* i: waiting for distance extra bits */
+var            MATCH = 25;     /* o: waiting for output space to copy string */
+var            LIT = 26;       /* o: waiting for output space to write literal */
+var    CHECK = 27;     /* i: waiting for 32-bit check value */
+var    LENGTH = 28;    /* i: waiting for 32-bit length (gzip) */
+var    DONE = 29;      /* finished check, done -- remain here until reset */
+var    BAD = 30;       /* got a data error -- remain here until reset */
+var    MEM = 31;       /* got an inflate() memory error -- remain here until reset */
+var    SYNC = 32;      /* looking for synchronization bytes to restart inflate() */
+
+/* ===========================================================================*/
+
+
+
+var ENOUGH_LENS = 852;
+var ENOUGH_DISTS = 592;
+//var ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);
+
+var MAX_WBITS = 15;
+/* 32K LZ77 window */
+var DEF_WBITS = MAX_WBITS;
+
+
+function ZSWAP32(q) {
+  return  (((q >>> 24) & 0xff) +
+          ((q >>> 8) & 0xff00) +
+          ((q & 0xff00) << 8) +
+          ((q & 0xff) << 24));
+}
+
+
+function InflateState() {
+  this.mode = 0;             /* current inflate mode */
+  this.last = false;          /* true if processing last block */
+  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
+  this.havedict = false;      /* true if dictionary provided */
+  this.flags = 0;             /* gzip header method and flags (0 if zlib) */
+  this.dmax = 0;              /* zlib header max distance (INFLATE_STRICT) */
+  this.check = 0;             /* protected copy of check value */
+  this.total = 0;             /* protected copy of output count */
+  // TODO: may be {}
+  this.head = null;           /* where to save gzip header information */
+
+  /* sliding window */
+  this.wbits = 0;             /* log base 2 of requested window size */
+  this.wsize = 0;             /* window size or zero if not using window */
+  this.whave = 0;             /* valid bytes in the window */
+  this.wnext = 0;             /* window write index */
+  this.window = null;         /* allocated sliding window, if needed */
+
+  /* bit accumulator */
+  this.hold = 0;              /* input bit accumulator */
+  this.bits = 0;              /* number of bits in "in" */
+
+  /* for string and stored block copying */
+  this.length = 0;            /* literal or length of data to copy */
+  this.offset = 0;            /* distance back to copy string from */
+
+  /* for table and code decoding */
+  this.extra = 0;             /* extra bits needed */
+
+  /* fixed and dynamic code tables */
+  this.lencode = null;          /* starting table for length/literal codes */
+  this.distcode = null;         /* starting table for distance codes */
+  this.lenbits = 0;           /* index bits for lencode */
+  this.distbits = 0;          /* index bits for distcode */
+
+  /* dynamic table building */
+  this.ncode = 0;             /* number of code length code lengths */
+  this.nlen = 0;              /* number of length code lengths */
+  this.ndist = 0;             /* number of distance code lengths */
+  this.have = 0;              /* number of code lengths in lens[] */
+  this.next = null;              /* next available space in codes[] */
+
+  this.lens = new utils.Buf16(320); /* temporary storage for code lengths */
+  this.work = new utils.Buf16(288); /* work area for code table building */
+
+  /*
+   because we don't have pointers in js, we use lencode and distcode directly
+   as buffers so we don't need codes
+  */
+  //this.codes = new utils.Buf32(ENOUGH);       /* space for code tables */
+  this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */
+  this.distdyn = null;             /* dynamic table for distance codes (JS specific) */
+  this.sane = 0;                   /* if false, allow invalid distance too far */
+  this.back = 0;                   /* bits back of last unprocessed length/lit */
+  this.was = 0;                    /* initial length of match */
+}
+
+function inflateResetKeep(strm) {
+  var state;
+
+  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
+  state = strm.state;
+  strm.total_in = strm.total_out = state.total = 0;
+  strm.msg = ''; /*Z_NULL*/
+  if (state.wrap) {       /* to support ill-conceived Java test suite */
+    strm.adler = state.wrap & 1;
+  }
+  state.mode = HEAD;
+  state.last = 0;
+  state.havedict = 0;
+  state.dmax = 32768;
+  state.head = null/*Z_NULL*/;
+  state.hold = 0;
+  state.bits = 0;
+  //state.lencode = state.distcode = state.next = state.codes;
+  state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS);
+  state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS);
+
+  state.sane = 1;
+  state.back = -1;
+  //Tracev((stderr, "inflate: reset\n"));
+  return Z_OK;
+}
+
+function inflateReset(strm) {
+  var state;
+
+  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
+  state = strm.state;
+  state.wsize = 0;
+  state.whave = 0;
+  state.wnext = 0;
+  return inflateResetKeep(strm);
+
+}
+
+function inflateReset2(strm, windowBits) {
+  var wrap;
+  var state;
+
+  /* get the state */
+  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
+  state = strm.state;
+
+  /* extract wrap request from windowBits parameter */
+  if (windowBits < 0) {
+    wrap = 0;
+    windowBits = -windowBits;
+  }
+  else {
+    wrap = (windowBits >> 4) + 1;
+    if (windowBits < 48) {
+      windowBits &= 15;
+    }
+  }
+
+  /* set number of window bits, free window if different */
+  if (windowBits && (windowBits < 8 || windowBits > 15)) {
+    return Z_STREAM_ERROR;
+  }
+  if (state.window !== null && state.wbits !== windowBits) {
+    state.window = null;
+  }
+
+  /* update state and reset the rest of it */
+  state.wrap = wrap;
+  state.wbits = windowBits;
+  return inflateReset(strm);
+}
+
+function inflateInit2(strm, windowBits) {
+  var ret;
+  var state;
+
+  if (!strm) { return Z_STREAM_ERROR; }
+  //strm.msg = Z_NULL;                 /* in case we return an error */
+
+  state = new InflateState();
+
+  //if (state === Z_NULL) return Z_MEM_ERROR;
+  //Tracev((stderr, "inflate: allocated\n"));
+  strm.state = state;
+  state.window = null/*Z_NULL*/;
+  ret = inflateReset2(strm, windowBits);
+  if (ret !== Z_OK) {
+    strm.state = null/*Z_NULL*/;
+  }
+  return ret;
+}
+
+function inflateInit(strm) {
+  return inflateInit2(strm, DEF_WBITS);
+}
+
+
+/*
+ Return state with length and distance decoding tables and index sizes set to
+ fixed code decoding.  Normally this returns fixed tables from inffixed.h.
+ If BUILDFIXED is defined, then instead this routine builds the tables the
+ first time it's called, and returns those tables the first time and
+ thereafter.  This reduces the size of the code by about 2K bytes, in
+ exchange for a little execution time.  However, BUILDFIXED should not be
+ used for threaded applications, since the rewriting of the tables and virgin
+ may not be thread-safe.
+ */
+var virgin = true;
+
+var lenfix, distfix; // We have no pointers in JS, so keep tables separate
+
+function fixedtables(state) {
+  /* build fixed huffman tables if first call (may not be thread safe) */
+  if (virgin) {
+    var sym;
+
+    lenfix = new utils.Buf32(512);
+    distfix = new utils.Buf32(32);
+
+    /* literal/length table */
+    sym = 0;
+    while (sym < 144) { state.lens[sym++] = 8; }
+    while (sym < 256) { state.lens[sym++] = 9; }
+    while (sym < 280) { state.lens[sym++] = 7; }
+    while (sym < 288) { state.lens[sym++] = 8; }
+
+    inflate_table(LENS,  state.lens, 0, 288, lenfix,   0, state.work, {bits: 9});
+
+    /* distance table */
+    sym = 0;
+    while (sym < 32) { state.lens[sym++] = 5; }
+
+    inflate_table(DISTS, state.lens, 0, 32,   distfix, 0, state.work, {bits: 5});
+
+    /* do this just once */
+    virgin = false;
+  }
+
+  state.lencode = lenfix;
+  state.lenbits = 9;
+  state.distcode = distfix;
+  state.distbits = 5;
+}
+
+
+/*
+ Update the window with the last wsize (normally 32K) bytes written before
+ returning.  If window does not exist yet, create it.  This is only called
+ when a window is already in use, or when output has been written during this
+ inflate call, but the end of the deflate stream has not been reached yet.
+ It is also called to create a window for dictionary data when a dictionary
+ is loaded.
+
+ Providing output buffers larger than 32K to inflate() should provide a speed
+ advantage, since only the last 32K of output is copied to the sliding window
+ upon return from inflate(), and since all distances after the first 32K of
+ output will fall in the output data, making match copies simpler and faster.
+ The advantage may be dependent on the size of the processor's data caches.
+ */
+function updatewindow(strm, src, end, copy) {
+  var dist;
+  var state = strm.state;
+
+  /* if it hasn't been done already, allocate space for the window */
+  if (state.window === null) {
+    state.wsize = 1 << state.wbits;
+    state.wnext = 0;
+    state.whave = 0;
+
+    state.window = new utils.Buf8(state.wsize);
+  }
+
+  /* copy state->wsize or less output bytes into the circular window */
+  if (copy >= state.wsize) {
+    utils.arraySet(state.window,src, end - state.wsize, state.wsize, 0);
+    state.wnext = 0;
+    state.whave = state.wsize;
+  }
+  else {
+    dist = state.wsize - state.wnext;
+    if (dist > copy) {
+      dist = copy;
+    }
+    //zmemcpy(state->window + state->wnext, end - copy, dist);
+    utils.arraySet(state.window,src, end - copy, dist, state.wnext);
+    copy -= dist;
+    if (copy) {
+      //zmemcpy(state->window, end - copy, copy);
+      utils.arraySet(state.window,src, end - copy, copy, 0);
+      state.wnext = copy;
+      state.whave = state.wsize;
+    }
+    else {
+      state.wnext += dist;
+      if (state.wnext === state.wsize) { state.wnext = 0; }
+      if (state.whave < state.wsize) { state.whave += dist; }
+    }
+  }
+  return 0;
+}
+
+function inflate(strm, flush) {
+  var state;
+  var input, output;          // input/output buffers
+  var next;                   /* next input INDEX */
+  var put;                    /* next output INDEX */
+  var have, left;             /* available input and output */
+  var hold;                   /* bit buffer */
+  var bits;                   /* bits in bit buffer */
+  var _in, _out;              /* save starting available input and output */
+  var copy;                   /* number of stored or match bytes to copy */
+  var from;                   /* where to copy match bytes from */
+  var from_source;
+  var here = 0;               /* current decoding table entry */
+  var here_bits, here_op, here_val; // paked "here" denormalized (JS specific)
+  //var last;                   /* parent table entry */
+  var last_bits, last_op, last_val; // paked "last" denormalized (JS specific)
+  var len;                    /* length to copy for repeats, bits to drop */
+  var ret;                    /* return code */
+  var hbuf = new utils.Buf8(4);    /* buffer for gzip header crc calculation */
+  var opts;
+
+  var n; // temporary var for NEED_BITS
+
+  var order = /* permutation of code lengths */
+    [16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15];
+
+
+  if (!strm || !strm.state || !strm.output ||
+      (!strm.input && strm.avail_in !== 0)) {
+    return Z_STREAM_ERROR;
+  }
+
+  state = strm.state;
+  if (state.mode === TYPE) { state.mode = TYPEDO; }    /* skip check */
+
+
+  //--- LOAD() ---
+  put = strm.next_out;
+  output = strm.output;
+  left = strm.avail_out;
+  next = strm.next_in;
+  input = strm.input;
+  have = strm.avail_in;
+  hold = state.hold;
+  bits = state.bits;
+  //---
+
+  _in = have;
+  _out = left;
+  ret = Z_OK;
+
+  inf_leave: // goto emulation
+  for (;;) {
+    switch (state.mode) {
+    case HEAD:
+      if (state.wrap === 0) {
+        state.mode = TYPEDO;
+        break;
+      }
+      //=== NEEDBITS(16);
+      while (bits < 16) {
+        if (have === 0) { break inf_leave; }
+        have--;
+        hold += input[next++] << bits;
+        bits += 8;
+      }
+      //===//
+      if ((state.wrap & 2) && hold === 0x8b1f) {  /* gzip header */
+        state.check = 0/*crc32(0L, Z_NULL, 0)*/;
+        //=== CRC2(state.check, hold);
+        hbuf[0] = hold & 0xff;
+        hbuf[1] = (hold >>> 8) & 0xff;
+        state.check = crc32(state.check, hbuf, 2, 0);
+        //===//
+
+        //=== INITBITS();
+        hold = 0;
+        bits = 0;
+        //===//
+        state.mode = FLAGS;
+        break;
+      }
+      state.flags = 0;           /* expect zlib header */
+      if (state.head) {
+        state.head.done = false;
+      }
+      if (!(state.wrap & 1) ||   /* check if zlib header allowed */
+        (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {
+        strm.msg = 'incorrect header check';
+        state.mode = BAD;
+        break;
+      }
+      if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) {
+        strm.msg = 'unknown compression method';
+        state.mode = BAD;
+        break;
+      }
+      //--- DROPBITS(4) ---//
+      hold >>>= 4;
+      bits -= 4;
+      //---//
+      len = (hold & 0x0f)/*BITS(4)*/ + 8;
+      if (state.wbits === 0) {
+        state.wbits = len;
+      }
+      else if (len > state.wbits) {
+        strm.msg = 'invalid window size';
+        state.mode = BAD;
+        break;
+      }
+      state.dmax = 1 << len;
+      //Tracev((stderr, "inflate:   zlib header ok\n"));
+      strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
+      state.mode = hold & 0x200 ? DICTID : TYPE;
+      //=== INITBITS();
+      hold = 0;
+      bits = 0;
+      //===//
+      break;
+    case FLAGS:
+      //=== NEEDBITS(16); */
+      while (bits < 16) {
+        if (have === 0) { break inf_leave; }
+        have--;
+        hold += input[next++] << bits;
+        bits += 8;
+      }
+      //===//
+      state.flags = hold;
+      if ((state.flags & 0xff) !== Z_DEFLATED) {
+        strm.msg = 'unknown compression method';
+        state.mode = BAD;
+        break;
+      }
+      if (state.flags & 0xe000) {
+        strm.msg = 'unknown header flags set';
+        state.mode = BAD;
+        break;
+      }
+      if (state.head) {
+        state.head.text = ((hold >> 8) & 1);
+      }
+      if (state.flags & 0x0200) {
+        //=== CRC2(state.check, hold);
+        hbuf[0] = hold & 0xff;
+        hbuf[1] = (hold >>> 8) & 0xff;
+        state.check = crc32(state.check, hbuf, 2, 0);
+        //===//
+      }
+      //=== INITBITS();
+      hold = 0;
+      bits = 0;
+      //===//
+      state.mode = TIME;
+      /* falls through */
+    case TIME:
+      //=== NEEDBITS(32); */
+      while (bits < 32) {
+        if (have === 0) { break inf_leave; }
+        have--;
+        hold += input[next++] << bits;
+        bits += 8;
+      }
+      //===//
+      if (state.head) {
+        state.head.time = hold;
+      }
+      if (state.flags & 0x0200) {
+        //=== CRC4(state.check, hold)
+        hbuf[0] = hold & 0xff;
+        hbuf[1] = (hold >>> 8) & 0xff;
+        hbuf[2] = (hold >>> 16) & 0xff;
+        hbuf[3] = (hold >>> 24) & 0xff;
+        state.check = crc32(state.check, hbuf, 4, 0);
+        //===
+      }
+      //=== INITBITS();
+      hold = 0;
+      bits = 0;
+      //===//
+      state.mode = OS;
+      /* falls through */
+    case OS:
+      //=== NEEDBITS(16); */
+      while (bits < 16) {
+        if (have === 0) { break inf_leave; }
+        have--;
+        hold += input[next++] << bits;
+        bits += 8;
+      }
+      //===//
+      if (state.head) {
+        state.head.xflags = (hold & 0xff);
+        state.head.os = (hold >> 8);
+      }
+      if (state.flags & 0x0200) {
+        //=== CRC2(state.check, hold);
+        hbuf[0] = hold & 0xff;
+        hbuf[1] = (hold >>> 8) & 0xff;
+        state.check = crc32(state.check, hbuf, 2, 0);
+        //===//
+      }
+      //=== INITBITS();
+      hold = 0;
+      bits = 0;
+      //===//
+      state.mode = EXLEN;
+      /* falls through */
+    case EXLEN:
+      if (state.flags & 0x0400) {
+        //=== NEEDBITS(16); */
+        while (bits < 16) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        state.length = hold;
+        if (state.head) {
+          state.head.extra_len = hold;
+        }
+        if (state.flags & 0x0200) {
+          //=== CRC2(state.check, hold);
+          hbuf[0] = hold & 0xff;
+          hbuf[1] = (hold >>> 8) & 0xff;
+          state.check = crc32(state.check, hbuf, 2, 0);
+          //===//
+        }
+        //=== INITBITS();
+        hold = 0;
+        bits = 0;
+        //===//
+      }
+      else if (state.head) {
+        state.head.extra = null/*Z_NULL*/;
+      }
+      state.mode = EXTRA;
+      /* falls through */
+    case EXTRA:
+      if (state.flags & 0x0400) {
+        copy = state.length;
+        if (copy > have) { copy = have; }
+        if (copy) {
+          if (state.head) {
+            len = state.head.extra_len - state.length;
+            if (!state.head.extra) {
+              // Use untyped array for more conveniend processing later
+              state.head.extra = new Array(state.head.extra_len);
+            }
+            utils.arraySet(
+              state.head.extra,
+              input,
+              next,
+              // extra field is limited to 65536 bytes
+              // - no need for additional size check
+              copy,
+              /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/
+              len
+            );
+            //zmemcpy(state.head.extra + len, next,
+            //        len + copy > state.head.extra_max ?
+            //        state.head.extra_max - len : copy);
+          }
+          if (state.flags & 0x0200) {
+            state.check = crc32(state.check, input, copy, next);
+          }
+          have -= copy;
+          next += copy;
+          state.length -= copy;
+        }
+        if (state.length) { break inf_leave; }
+      }
+      state.length = 0;
+      state.mode = NAME;
+      /* falls through */
+    case NAME:
+      if (state.flags & 0x0800) {
+        if (have === 0) { break inf_leave; }
+        copy = 0;
+        do {
+          // TODO: 2 or 1 bytes?
+          len = input[next + copy++];
+          /* use constant limit because in js we should not preallocate memory */
+          if (state.head && len &&
+              (state.length < 65536 /*state.head.name_max*/)) {
+            state.head.name += String.fromCharCode(len);
+          }
+        } while (len && copy < have);
+
+        if (state.flags & 0x0200) {
+          state.check = crc32(state.check, input, copy, next);
+        }
+        have -= copy;
+        next += copy;
+        if (len) { break inf_leave; }
+      }
+      else if (state.head) {
+        state.head.name = null;
+      }
+      state.length = 0;
+      state.mode = COMMENT;
+      /* falls through */
+    case COMMENT:
+      if (state.flags & 0x1000) {
+        if (have === 0) { break inf_leave; }
+        copy = 0;
+        do {
+          len = input[next + copy++];
+          /* use constant limit because in js we should not preallocate memory */
+          if (state.head && len &&
+              (state.length < 65536 /*state.head.comm_max*/)) {
+            state.head.comment += String.fromCharCode(len);
+          }
+        } while (len && copy < have);
+        if (state.flags & 0x0200) {
+          state.check = crc32(state.check, input, copy, next);
+        }
+        have -= copy;
+        next += copy;
+        if (len) { break inf_leave; }
+      }
+      else if (state.head) {
+        state.head.comment = null;
+      }
+      state.mode = HCRC;
+      /* falls through */
+    case HCRC:
+      if (state.flags & 0x0200) {
+        //=== NEEDBITS(16); */
+        while (bits < 16) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        if (hold !== (state.check & 0xffff)) {
+          strm.msg = 'header crc mismatch';
+          state.mode = BAD;
+          break;
+        }
+        //=== INITBITS();
+        hold = 0;
+        bits = 0;
+        //===//
+      }
+      if (state.head) {
+        state.head.hcrc = ((state.flags >> 9) & 1);
+        state.head.done = true;
+      }
+      strm.adler = state.check = 0 /*crc32(0L, Z_NULL, 0)*/;
+      state.mode = TYPE;
+      break;
+    case DICTID:
+      //=== NEEDBITS(32); */
+      while (bits < 32) {
+        if (have === 0) { break inf_leave; }
+        have--;
+        hold += input[next++] << bits;
+        bits += 8;
+      }
+      //===//
+      strm.adler = state.check = ZSWAP32(hold);
+      //=== INITBITS();
+      hold = 0;
+      bits = 0;
+      //===//
+      state.mode = DICT;
+      /* falls through */
+    case DICT:
+      if (state.havedict === 0) {
+        //--- RESTORE() ---
+        strm.next_out = put;
+        strm.avail_out = left;
+        strm.next_in = next;
+        strm.avail_in = have;
+        state.hold = hold;
+        state.bits = bits;
+        //---
+        return Z_NEED_DICT;
+      }
+      strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
+      state.mode = TYPE;
+      /* falls through */
+    case TYPE:
+      if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; }
+      /* falls through */
+    case TYPEDO:
+      if (state.last) {
+        //--- BYTEBITS() ---//
+        hold >>>= bits & 7;
+        bits -= bits & 7;
+        //---//
+        state.mode = CHECK;
+        break;
+      }
+      //=== NEEDBITS(3); */
+      while (bits < 3) {
+        if (have === 0) { break inf_leave; }
+        have--;
+        hold += input[next++] << bits;
+        bits += 8;
+      }
+      //===//
+      state.last = (hold & 0x01)/*BITS(1)*/;
+      //--- DROPBITS(1) ---//
+      hold >>>= 1;
+      bits -= 1;
+      //---//
+
+      switch ((hold & 0x03)/*BITS(2)*/) {
+      case 0:                             /* stored block */
+        //Tracev((stderr, "inflate:     stored block%s\n",
+        //        state.last ? " (last)" : ""));
+        state.mode = STORED;
+        break;
+      case 1:                             /* fixed block */
+        fixedtables(state);
+        //Tracev((stderr, "inflate:     fixed codes block%s\n",
+        //        state.last ? " (last)" : ""));
+        state.mode = LEN_;             /* decode codes */
+        if (flush === Z_TREES) {
+          //--- DROPBITS(2) ---//
+          hold >>>= 2;
+          bits -= 2;
+          //---//
+          break inf_leave;
+        }
+        break;
+      case 2:                             /* dynamic block */
+        //Tracev((stderr, "inflate:     dynamic codes block%s\n",
+        //        state.last ? " (last)" : ""));
+        state.mode = TABLE;
+        break;
+      case 3:
+        strm.msg = 'invalid block type';
+        state.mode = BAD;
+      }
+      //--- DROPBITS(2) ---//
+      hold >>>= 2;
+      bits -= 2;
+      //---//
+      break;
+    case STORED:
+      //--- BYTEBITS() ---// /* go to byte boundary */
+      hold >>>= bits & 7;
+      bits -= bits & 7;
+      //---//
+      //=== NEEDBITS(32); */
       while (bits < 32) {
         if (have === 0) { break inf_leave; }
         have--;
         hold += input[next++] << bits;
         bits += 8;
       }
-      //===//
-      if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {
-        strm.msg = 'invalid stored block lengths';
+      //===//
+      if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {
+        strm.msg = 'invalid stored block lengths';
+        state.mode = BAD;
+        break;
+      }
+      state.length = hold & 0xffff;
+      //Tracev((stderr, "inflate:       stored length %u\n",
+      //        state.length));
+      //=== INITBITS();
+      hold = 0;
+      bits = 0;
+      //===//
+      state.mode = COPY_;
+      if (flush === Z_TREES) { break inf_leave; }
+      /* falls through */
+    case COPY_:
+      state.mode = COPY;
+      /* falls through */
+    case COPY:
+      copy = state.length;
+      if (copy) {
+        if (copy > have) { copy = have; }
+        if (copy > left) { copy = left; }
+        if (copy === 0) { break inf_leave; }
+        //--- zmemcpy(put, next, copy); ---
+        utils.arraySet(output, input, next, copy, put);
+        //---//
+        have -= copy;
+        next += copy;
+        left -= copy;
+        put += copy;
+        state.length -= copy;
+        break;
+      }
+      //Tracev((stderr, "inflate:       stored end\n"));
+      state.mode = TYPE;
+      break;
+    case TABLE:
+      //=== NEEDBITS(14); */
+      while (bits < 14) {
+        if (have === 0) { break inf_leave; }
+        have--;
+        hold += input[next++] << bits;
+        bits += 8;
+      }
+      //===//
+      state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;
+      //--- DROPBITS(5) ---//
+      hold >>>= 5;
+      bits -= 5;
+      //---//
+      state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;
+      //--- DROPBITS(5) ---//
+      hold >>>= 5;
+      bits -= 5;
+      //---//
+      state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;
+      //--- DROPBITS(4) ---//
+      hold >>>= 4;
+      bits -= 4;
+      //---//
+//#ifndef PKZIP_BUG_WORKAROUND
+      if (state.nlen > 286 || state.ndist > 30) {
+        strm.msg = 'too many length or distance symbols';
+        state.mode = BAD;
+        break;
+      }
+//#endif
+      //Tracev((stderr, "inflate:       table sizes ok\n"));
+      state.have = 0;
+      state.mode = LENLENS;
+      /* falls through */
+    case LENLENS:
+      while (state.have < state.ncode) {
+        //=== NEEDBITS(3);
+        while (bits < 3) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);
+        //--- DROPBITS(3) ---//
+        hold >>>= 3;
+        bits -= 3;
+        //---//
+      }
+      while (state.have < 19) {
+        state.lens[order[state.have++]] = 0;
+      }
+      // We have separate tables & no pointers. 2 commented lines below not needed.
+      //state.next = state.codes;
+      //state.lencode = state.next;
+      // Switch to use dynamic table
+      state.lencode = state.lendyn;
+      state.lenbits = 7;
+
+      opts = {bits: state.lenbits};
+      ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);
+      state.lenbits = opts.bits;
+
+      if (ret) {
+        strm.msg = 'invalid code lengths set';
+        state.mode = BAD;
+        break;
+      }
+      //Tracev((stderr, "inflate:       code lengths ok\n"));
+      state.have = 0;
+      state.mode = CODELENS;
+      /* falls through */
+    case CODELENS:
+      while (state.have < state.nlen + state.ndist) {
+        for (;;) {
+          here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/
+          here_bits = here >>> 24;
+          here_op = (here >>> 16) & 0xff;
+          here_val = here & 0xffff;
+
+          if ((here_bits) <= bits) { break; }
+          //--- PULLBYTE() ---//
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+          //---//
+        }
+        if (here_val < 16) {
+          //--- DROPBITS(here.bits) ---//
+          hold >>>= here_bits;
+          bits -= here_bits;
+          //---//
+          state.lens[state.have++] = here_val;
+        }
+        else {
+          if (here_val === 16) {
+            //=== NEEDBITS(here.bits + 2);
+            n = here_bits + 2;
+            while (bits < n) {
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            //===//
+            //--- DROPBITS(here.bits) ---//
+            hold >>>= here_bits;
+            bits -= here_bits;
+            //---//
+            if (state.have === 0) {
+              strm.msg = 'invalid bit length repeat';
+              state.mode = BAD;
+              break;
+            }
+            len = state.lens[state.have - 1];
+            copy = 3 + (hold & 0x03);//BITS(2);
+            //--- DROPBITS(2) ---//
+            hold >>>= 2;
+            bits -= 2;
+            //---//
+          }
+          else if (here_val === 17) {
+            //=== NEEDBITS(here.bits + 3);
+            n = here_bits + 3;
+            while (bits < n) {
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            //===//
+            //--- DROPBITS(here.bits) ---//
+            hold >>>= here_bits;
+            bits -= here_bits;
+            //---//
+            len = 0;
+            copy = 3 + (hold & 0x07);//BITS(3);
+            //--- DROPBITS(3) ---//
+            hold >>>= 3;
+            bits -= 3;
+            //---//
+          }
+          else {
+            //=== NEEDBITS(here.bits + 7);
+            n = here_bits + 7;
+            while (bits < n) {
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            //===//
+            //--- DROPBITS(here.bits) ---//
+            hold >>>= here_bits;
+            bits -= here_bits;
+            //---//
+            len = 0;
+            copy = 11 + (hold & 0x7f);//BITS(7);
+            //--- DROPBITS(7) ---//
+            hold >>>= 7;
+            bits -= 7;
+            //---//
+          }
+          if (state.have + copy > state.nlen + state.ndist) {
+            strm.msg = 'invalid bit length repeat';
+            state.mode = BAD;
+            break;
+          }
+          while (copy--) {
+            state.lens[state.have++] = len;
+          }
+        }
+      }
+
+      /* handle error breaks in while */
+      if (state.mode === BAD) { break; }
+
+      /* check for end-of-block code (better have one) */
+      if (state.lens[256] === 0) {
+        strm.msg = 'invalid code -- missing end-of-block';
+        state.mode = BAD;
+        break;
+      }
+
+      /* build code tables -- note: do not change the lenbits or distbits
+         values here (9 and 6) without reading the comments in inftrees.h
+         concerning the ENOUGH constants, which depend on those values */
+      state.lenbits = 9;
+
+      opts = {bits: state.lenbits};
+      ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);
+      // We have separate tables & no pointers. 2 commented lines below not needed.
+      // state.next_index = opts.table_index;
+      state.lenbits = opts.bits;
+      // state.lencode = state.next;
+
+      if (ret) {
+        strm.msg = 'invalid literal/lengths set';
+        state.mode = BAD;
+        break;
+      }
+
+      state.distbits = 6;
+      //state.distcode.copy(state.codes);
+      // Switch to use dynamic table
+      state.distcode = state.distdyn;
+      opts = {bits: state.distbits};
+      ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);
+      // We have separate tables & no pointers. 2 commented lines below not needed.
+      // state.next_index = opts.table_index;
+      state.distbits = opts.bits;
+      // state.distcode = state.next;
+
+      if (ret) {
+        strm.msg = 'invalid distances set';
+        state.mode = BAD;
+        break;
+      }
+      //Tracev((stderr, 'inflate:       codes ok\n'));
+      state.mode = LEN_;
+      if (flush === Z_TREES) { break inf_leave; }
+      /* falls through */
+    case LEN_:
+      state.mode = LEN;
+      /* falls through */
+    case LEN:
+      if (have >= 6 && left >= 258) {
+        //--- RESTORE() ---
+        strm.next_out = put;
+        strm.avail_out = left;
+        strm.next_in = next;
+        strm.avail_in = have;
+        state.hold = hold;
+        state.bits = bits;
+        //---
+        inflate_fast(strm, _out);
+        //--- LOAD() ---
+        put = strm.next_out;
+        output = strm.output;
+        left = strm.avail_out;
+        next = strm.next_in;
+        input = strm.input;
+        have = strm.avail_in;
+        hold = state.hold;
+        bits = state.bits;
+        //---
+
+        if (state.mode === TYPE) {
+          state.back = -1;
+        }
+        break;
+      }
+      state.back = 0;
+      for (;;) {
+        here = state.lencode[hold & ((1 << state.lenbits) -1)];  /*BITS(state.lenbits)*/
+        here_bits = here >>> 24;
+        here_op = (here >>> 16) & 0xff;
+        here_val = here & 0xffff;
+
+        if (here_bits <= bits) { break; }
+        //--- PULLBYTE() ---//
+        if (have === 0) { break inf_leave; }
+        have--;
+        hold += input[next++] << bits;
+        bits += 8;
+        //---//
+      }
+      if (here_op && (here_op & 0xf0) === 0) {
+        last_bits = here_bits;
+        last_op = here_op;
+        last_val = here_val;
+        for (;;) {
+          here = state.lencode[last_val +
+                  ((hold & ((1 << (last_bits + last_op)) -1))/*BITS(last.bits + last.op)*/ >> last_bits)];
+          here_bits = here >>> 24;
+          here_op = (here >>> 16) & 0xff;
+          here_val = here & 0xffff;
+
+          if ((last_bits + here_bits) <= bits) { break; }
+          //--- PULLBYTE() ---//
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+          //---//
+        }
+        //--- DROPBITS(last.bits) ---//
+        hold >>>= last_bits;
+        bits -= last_bits;
+        //---//
+        state.back += last_bits;
+      }
+      //--- DROPBITS(here.bits) ---//
+      hold >>>= here_bits;
+      bits -= here_bits;
+      //---//
+      state.back += here_bits;
+      state.length = here_val;
+      if (here_op === 0) {
+        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
+        //        "inflate:         literal '%c'\n" :
+        //        "inflate:         literal 0x%02x\n", here.val));
+        state.mode = LIT;
+        break;
+      }
+      if (here_op & 32) {
+        //Tracevv((stderr, "inflate:         end of block\n"));
+        state.back = -1;
+        state.mode = TYPE;
+        break;
+      }
+      if (here_op & 64) {
+        strm.msg = 'invalid literal/length code';
+        state.mode = BAD;
+        break;
+      }
+      state.extra = here_op & 15;
+      state.mode = LENEXT;
+      /* falls through */
+    case LENEXT:
+      if (state.extra) {
+        //=== NEEDBITS(state.extra);
+        n = state.extra;
+        while (bits < n) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        state.length += hold & ((1 << state.extra) -1)/*BITS(state.extra)*/;
+        //--- DROPBITS(state.extra) ---//
+        hold >>>= state.extra;
+        bits -= state.extra;
+        //---//
+        state.back += state.extra;
+      }
+      //Tracevv((stderr, "inflate:         length %u\n", state.length));
+      state.was = state.length;
+      state.mode = DIST;
+      /* falls through */
+    case DIST:
+      for (;;) {
+        here = state.distcode[hold & ((1 << state.distbits) -1)];/*BITS(state.distbits)*/
+        here_bits = here >>> 24;
+        here_op = (here >>> 16) & 0xff;
+        here_val = here & 0xffff;
+
+        if ((here_bits) <= bits) { break; }
+        //--- PULLBYTE() ---//
+        if (have === 0) { break inf_leave; }
+        have--;
+        hold += input[next++] << bits;
+        bits += 8;
+        //---//
+      }
+      if ((here_op & 0xf0) === 0) {
+        last_bits = here_bits;
+        last_op = here_op;
+        last_val = here_val;
+        for (;;) {
+          here = state.distcode[last_val +
+                  ((hold & ((1 << (last_bits + last_op)) -1))/*BITS(last.bits + last.op)*/ >> last_bits)];
+          here_bits = here >>> 24;
+          here_op = (here >>> 16) & 0xff;
+          here_val = here & 0xffff;
+
+          if ((last_bits + here_bits) <= bits) { break; }
+          //--- PULLBYTE() ---//
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+          //---//
+        }
+        //--- DROPBITS(last.bits) ---//
+        hold >>>= last_bits;
+        bits -= last_bits;
+        //---//
+        state.back += last_bits;
+      }
+      //--- DROPBITS(here.bits) ---//
+      hold >>>= here_bits;
+      bits -= here_bits;
+      //---//
+      state.back += here_bits;
+      if (here_op & 64) {
+        strm.msg = 'invalid distance code';
+        state.mode = BAD;
+        break;
+      }
+      state.offset = here_val;
+      state.extra = (here_op) & 15;
+      state.mode = DISTEXT;
+      /* falls through */
+    case DISTEXT:
+      if (state.extra) {
+        //=== NEEDBITS(state.extra);
+        n = state.extra;
+        while (bits < n) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        state.offset += hold & ((1 << state.extra) -1)/*BITS(state.extra)*/;
+        //--- DROPBITS(state.extra) ---//
+        hold >>>= state.extra;
+        bits -= state.extra;
+        //---//
+        state.back += state.extra;
+      }
+//#ifdef INFLATE_STRICT
+      if (state.offset > state.dmax) {
+        strm.msg = 'invalid distance too far back';
         state.mode = BAD;
         break;
       }
-      state.length = hold & 0xffff;
-      //Tracev((stderr, "inflate:       stored length %u\n",
-      //        state.length));
-      //=== INITBITS();
-      hold = 0;
-      bits = 0;
-      //===//
-      state.mode = COPY_;
-      if (flush === Z_TREES) { break inf_leave; }
-      /* falls through */
-    case COPY_:
-      state.mode = COPY;
-      /* falls through */
-    case COPY:
-      copy = state.length;
-      if (copy) {
-        if (copy > have) { copy = have; }
-        if (copy > left) { copy = left; }
-        if (copy === 0) { break inf_leave; }
-        //--- zmemcpy(put, next, copy); ---
-        utils.arraySet(output, input, next, copy, put);
-        //---//
-        have -= copy;
-        next += copy;
-        left -= copy;
-        put += copy;
-        state.length -= copy;
-        break;
+//#endif
+      //Tracevv((stderr, "inflate:         distance %u\n", state.offset));
+      state.mode = MATCH;
+      /* falls through */
+    case MATCH:
+      if (left === 0) { break inf_leave; }
+      copy = _out - left;
+      if (state.offset > copy) {         /* copy from window */
+        copy = state.offset - copy;
+        if (copy > state.whave) {
+          if (state.sane) {
+            strm.msg = 'invalid distance too far back';
+            state.mode = BAD;
+            break;
+          }
+// (!) This block is disabled in zlib defailts,
+// don't enable it for binary compatibility
+//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
+//          Trace((stderr, "inflate.c too far\n"));
+//          copy -= state.whave;
+//          if (copy > state.length) { copy = state.length; }
+//          if (copy > left) { copy = left; }
+//          left -= copy;
+//          state.length -= copy;
+//          do {
+//            output[put++] = 0;
+//          } while (--copy);
+//          if (state.length === 0) { state.mode = LEN; }
+//          break;
+//#endif
+        }
+        if (copy > state.wnext) {
+          copy -= state.wnext;
+          from = state.wsize - copy;
+        }
+        else {
+          from = state.wnext - copy;
+        }
+        if (copy > state.length) { copy = state.length; }
+        from_source = state.window;
+      }
+      else {                              /* copy from output */
+        from_source = output;
+        from = put - state.offset;
+        copy = state.length;
+      }
+      if (copy > left) { copy = left; }
+      left -= copy;
+      state.length -= copy;
+      do {
+        output[put++] = from_source[from++];
+      } while (--copy);
+      if (state.length === 0) { state.mode = LEN; }
+      break;
+    case LIT:
+      if (left === 0) { break inf_leave; }
+      output[put++] = state.length;
+      left--;
+      state.mode = LEN;
+      break;
+    case CHECK:
+      if (state.wrap) {
+        //=== NEEDBITS(32);
+        while (bits < 32) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          // Use '|' insdead of '+' to make sure that result is signed
+          hold |= input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        _out -= left;
+        strm.total_out += _out;
+        state.total += _out;
+        if (_out) {
+          strm.adler = state.check =
+              /*UPDATE(state.check, put - _out, _out);*/
+              (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out));
+
+        }
+        _out = left;
+        // NB: crc32 stored as signed 32-bit int, ZSWAP32 returns signed too
+        if ((state.flags ? hold : ZSWAP32(hold)) !== state.check) {
+          strm.msg = 'incorrect data check';
+          state.mode = BAD;
+          break;
+        }
+        //=== INITBITS();
+        hold = 0;
+        bits = 0;
+        //===//
+        //Tracev((stderr, "inflate:   check matches trailer\n"));
+      }
+      state.mode = LENGTH;
+      /* falls through */
+    case LENGTH:
+      if (state.wrap && state.flags) {
+        //=== NEEDBITS(32);
+        while (bits < 32) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        if (hold !== (state.total & 0xffffffff)) {
+          strm.msg = 'incorrect length check';
+          state.mode = BAD;
+          break;
+        }
+        //=== INITBITS();
+        hold = 0;
+        bits = 0;
+        //===//
+        //Tracev((stderr, "inflate:   length matches trailer\n"));
+      }
+      state.mode = DONE;
+      /* falls through */
+    case DONE:
+      ret = Z_STREAM_END;
+      break inf_leave;
+    case BAD:
+      ret = Z_DATA_ERROR;
+      break inf_leave;
+    case MEM:
+      return Z_MEM_ERROR;
+    case SYNC:
+      /* falls through */
+    default:
+      return Z_STREAM_ERROR;
+    }
+  }
+
+  // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave"
+
+  /*
+     Return from inflate(), updating the total counts and the check value.
+     If there was no progress during the inflate() call, return a buffer
+     error.  Call updatewindow() to create and/or update the window state.
+     Note: a memory error from inflate() is non-recoverable.
+   */
+
+  //--- RESTORE() ---
+  strm.next_out = put;
+  strm.avail_out = left;
+  strm.next_in = next;
+  strm.avail_in = have;
+  state.hold = hold;
+  state.bits = bits;
+  //---
+
+  if (state.wsize || (_out !== strm.avail_out && state.mode < BAD &&
+                      (state.mode < CHECK || flush !== Z_FINISH))) {
+    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) {
+      state.mode = MEM;
+      return Z_MEM_ERROR;
+    }
+  }
+  _in -= strm.avail_in;
+  _out -= strm.avail_out;
+  strm.total_in += _in;
+  strm.total_out += _out;
+  state.total += _out;
+  if (state.wrap && _out) {
+    strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/
+      (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out));
+  }
+  strm.data_type = state.bits + (state.last ? 64 : 0) +
+                    (state.mode === TYPE ? 128 : 0) +
+                    (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);
+  if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) {
+    ret = Z_BUF_ERROR;
+  }
+  return ret;
+}
+
+function inflateEnd(strm) {
+
+  if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) {
+    return Z_STREAM_ERROR;
+  }
+
+  var state = strm.state;
+  if (state.window) {
+    state.window = null;
+  }
+  strm.state = null;
+  return Z_OK;
+}
+
+function inflateGetHeader(strm, head) {
+  var state;
+
+  /* check state */
+  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
+  state = strm.state;
+  if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; }
+
+  /* save header structure */
+  state.head = head;
+  head.done = false;
+  return Z_OK;
+}
+
+
+exports.inflateReset = inflateReset;
+exports.inflateReset2 = inflateReset2;
+exports.inflateResetKeep = inflateResetKeep;
+exports.inflateInit = inflateInit;
+exports.inflateInit2 = inflateInit2;
+exports.inflate = inflate;
+exports.inflateEnd = inflateEnd;
+exports.inflateGetHeader = inflateGetHeader;
+exports.inflateInfo = 'pako inflate (from Nodeca project)';
+
+/* Not implemented
+exports.inflateCopy = inflateCopy;
+exports.inflateGetDictionary = inflateGetDictionary;
+exports.inflateMark = inflateMark;
+exports.inflatePrime = inflatePrime;
+exports.inflateSetDictionary = inflateSetDictionary;
+exports.inflateSync = inflateSync;
+exports.inflateSyncPoint = inflateSyncPoint;
+exports.inflateUndermine = inflateUndermine;
+*/
+
+},{"../utils/common":20,"./adler32":22,"./crc32":24,"./inffast":27,"./inftrees":29}],29:[function(require,module,exports){
+'use strict';
+
+
+var utils = require('../utils/common');
+
+var MAXBITS = 15;
+var ENOUGH_LENS = 852;
+var ENOUGH_DISTS = 592;
+//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);
+
+var CODES = 0;
+var LENS = 1;
+var DISTS = 2;
+
+var lbase = [ /* Length codes 257..285 base */
+  3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
+  35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0
+];
+
+var lext = [ /* Length codes 257..285 extra */
+  16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
+  19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78
+];
+
+var dbase = [ /* Distance codes 0..29 base */
+  1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
+  257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
+  8193, 12289, 16385, 24577, 0, 0
+];
+
+var dext = [ /* Distance codes 0..29 extra */
+  16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
+  23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
+  28, 28, 29, 29, 64, 64
+];
+
+module.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts)
+{
+  var bits = opts.bits;
+      //here = opts.here; /* table entry for duplication */
+
+  var len = 0;               /* a code's length in bits */
+  var sym = 0;               /* index of code symbols */
+  var min = 0, max = 0;          /* minimum and maximum code lengths */
+  var root = 0;              /* number of index bits for root table */
+  var curr = 0;              /* number of index bits for current table */
+  var drop = 0;              /* code bits to drop for sub-table */
+  var left = 0;                   /* number of prefix codes available */
+  var used = 0;              /* code entries in table used */
+  var huff = 0;              /* Huffman code */
+  var incr;              /* for incrementing code, index */
+  var fill;              /* index for replicating entries */
+  var low;               /* low bits for current root entry */
+  var mask;              /* mask for low root bits */
+  var next;             /* next available space in table */
+  var base = null;     /* base value table to use */
+  var base_index = 0;
+//  var shoextra;    /* extra bits table to use */
+  var end;                    /* use base and extra for symbol > end */
+  var count = new utils.Buf16(MAXBITS+1); //[MAXBITS+1];    /* number of codes of each length */
+  var offs = new utils.Buf16(MAXBITS+1); //[MAXBITS+1];     /* offsets in table for each length */
+  var extra = null;
+  var extra_index = 0;
+
+  var here_bits, here_op, here_val;
+
+  /*
+   Process a set of code lengths to create a canonical Huffman code.  The
+   code lengths are lens[0..codes-1].  Each length corresponds to the
+   symbols 0..codes-1.  The Huffman code is generated by first sorting the
+   symbols by length from short to long, and retaining the symbol order
+   for codes with equal lengths.  Then the code starts with all zero bits
+   for the first code of the shortest length, and the codes are integer
+   increments for the same length, and zeros are appended as the length
+   increases.  For the deflate format, these bits are stored backwards
+   from their more natural integer increment ordering, and so when the
+   decoding tables are built in the large loop below, the integer codes
+   are incremented backwards.
+
+   This routine assumes, but does not check, that all of the entries in
+   lens[] are in the range 0..MAXBITS.  The caller must assure this.
+   1..MAXBITS is interpreted as that code length.  zero means that that
+   symbol does not occur in this code.
+
+   The codes are sorted by computing a count of codes for each length,
+   creating from that a table of starting indices for each length in the
+   sorted table, and then entering the symbols in order in the sorted
+   table.  The sorted table is work[], with that space being provided by
+   the caller.
+
+   The length counts are used for other purposes as well, i.e. finding
+   the minimum and maximum length codes, determining if there are any
+   codes at all, checking for a valid set of lengths, and looking ahead
+   at length counts to determine sub-table sizes when building the
+   decoding tables.
+   */
+
+  /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
+  for (len = 0; len <= MAXBITS; len++) {
+    count[len] = 0;
+  }
+  for (sym = 0; sym < codes; sym++) {
+    count[lens[lens_index + sym]]++;
+  }
+
+  /* bound code lengths, force root to be within code lengths */
+  root = bits;
+  for (max = MAXBITS; max >= 1; max--) {
+    if (count[max] !== 0) { break; }
+  }
+  if (root > max) {
+    root = max;
+  }
+  if (max === 0) {                     /* no symbols to code at all */
+    //table.op[opts.table_index] = 64;  //here.op = (var char)64;    /* invalid code marker */
+    //table.bits[opts.table_index] = 1;   //here.bits = (var char)1;
+    //table.val[opts.table_index++] = 0;   //here.val = (var short)0;
+    table[table_index++] = (1 << 24) | (64 << 16) | 0;
+
+
+    //table.op[opts.table_index] = 64;
+    //table.bits[opts.table_index] = 1;
+    //table.val[opts.table_index++] = 0;
+    table[table_index++] = (1 << 24) | (64 << 16) | 0;
+
+    opts.bits = 1;
+    return 0;     /* no symbols, but wait for decoding to report error */
+  }
+  for (min = 1; min < max; min++) {
+    if (count[min] !== 0) { break; }
+  }
+  if (root < min) {
+    root = min;
+  }
+
+  /* check for an over-subscribed or incomplete set of lengths */
+  left = 1;
+  for (len = 1; len <= MAXBITS; len++) {
+    left <<= 1;
+    left -= count[len];
+    if (left < 0) {
+      return -1;
+    }        /* over-subscribed */
+  }
+  if (left > 0 && (type === CODES || max !== 1)) {
+    return -1;                      /* incomplete set */
+  }
+
+  /* generate offsets into symbol table for each length for sorting */
+  offs[1] = 0;
+  for (len = 1; len < MAXBITS; len++) {
+    offs[len + 1] = offs[len] + count[len];
+  }
+
+  /* sort symbols by length, by symbol order within each length */
+  for (sym = 0; sym < codes; sym++) {
+    if (lens[lens_index + sym] !== 0) {
+      work[offs[lens[lens_index + sym]]++] = sym;
+    }
+  }
+
+  /*
+   Create and fill in decoding tables.  In this loop, the table being
+   filled is at next and has curr index bits.  The code being used is huff
+   with length len.  That code is converted to an index by dropping drop
+   bits off of the bottom.  For codes where len is less than drop + curr,
+   those top drop + curr - len bits are incremented through all values to
+   fill the table with replicated entries.
+
+   root is the number of index bits for the root table.  When len exceeds
+   root, sub-tables are created pointed to by the root entry with an index
+   of the low root bits of huff.  This is saved in low to check for when a
+   new sub-table should be started.  drop is zero when the root table is
+   being filled, and drop is root when sub-tables are being filled.
+
+   When a new sub-table is needed, it is necessary to look ahead in the
+   code lengths to determine what size sub-table is needed.  The length
+   counts are used for this, and so count[] is decremented as codes are
+   entered in the tables.
+
+   used keeps track of how many table entries have been allocated from the
+   provided *table space.  It is checked for LENS and DIST tables against
+   the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
+   the initial root table size constants.  See the comments in inftrees.h
+   for more information.
+
+   sym increments through all symbols, and the loop terminates when
+   all codes of length max, i.e. all codes, have been processed.  This
+   routine permits incomplete codes, so another loop after this one fills
+   in the rest of the decoding tables with invalid code markers.
+   */
+
+  /* set up for code type */
+  // poor man optimization - use if-else instead of switch,
+  // to avoid deopts in old v8
+  if (type === CODES) {
+    base = extra = work;    /* dummy value--not used */
+    end = 19;
+
+  } else if (type === LENS) {
+    base = lbase;
+    base_index -= 257;
+    extra = lext;
+    extra_index -= 257;
+    end = 256;
+
+  } else {                    /* DISTS */
+    base = dbase;
+    extra = dext;
+    end = -1;
+  }
+
+  /* initialize opts for loop */
+  huff = 0;                   /* starting code */
+  sym = 0;                    /* starting code symbol */
+  len = min;                  /* starting code length */
+  next = table_index;              /* current table to fill in */
+  curr = root;                /* current table index bits */
+  drop = 0;                   /* current bits to drop from code for index */
+  low = -1;                   /* trigger new sub-table when len > root */
+  used = 1 << root;          /* use root table entries */
+  mask = used - 1;            /* mask for comparing low */
+
+  /* check available table space */
+  if ((type === LENS && used > ENOUGH_LENS) ||
+    (type === DISTS && used > ENOUGH_DISTS)) {
+    return 1;
+  }
+
+  var i=0;
+  /* process all codes and make table entries */
+  for (;;) {
+    i++;
+    /* create table entry */
+    here_bits = len - drop;
+    if (work[sym] < end) {
+      here_op = 0;
+      here_val = work[sym];
+    }
+    else if (work[sym] > end) {
+      here_op = extra[extra_index + work[sym]];
+      here_val = base[base_index + work[sym]];
+    }
+    else {
+      here_op = 32 + 64;         /* end of block */
+      here_val = 0;
+    }
+
+    /* replicate for those indices with low len bits equal to huff */
+    incr = 1 << (len - drop);
+    fill = 1 << curr;
+    min = fill;                 /* save offset to next table */
+    do {
+      fill -= incr;
+      table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;
+    } while (fill !== 0);
+
+    /* backwards increment the len-bit code huff */
+    incr = 1 << (len - 1);
+    while (huff & incr) {
+      incr >>= 1;
+    }
+    if (incr !== 0) {
+      huff &= incr - 1;
+      huff += incr;
+    } else {
+      huff = 0;
+    }
+
+    /* go to next symbol, update count, len */
+    sym++;
+    if (--count[len] === 0) {
+      if (len === max) { break; }
+      len = lens[lens_index + work[sym]];
+    }
+
+    /* create new sub-table if needed */
+    if (len > root && (huff & mask) !== low) {
+      /* if first time, transition to sub-tables */
+      if (drop === 0) {
+        drop = root;
+      }
+
+      /* increment past last table */
+      next += min;            /* here min is 1 << curr */
+
+      /* determine length of next table */
+      curr = len - drop;
+      left = 1 << curr;
+      while (curr + drop < max) {
+        left -= count[curr + drop];
+        if (left <= 0) { break; }
+        curr++;
+        left <<= 1;
       }
-      //Tracev((stderr, "inflate:       stored end\n"));
-      state.mode = TYPE;
-      break;
-    case TABLE:
-      //=== NEEDBITS(14); */
-      while (bits < 14) {
-        if (have === 0) { break inf_leave; }
-        have--;
-        hold += input[next++] << bits;
-        bits += 8;
+
+      /* check for enough space */
+      used += 1 << curr;
+      if ((type === LENS && used > ENOUGH_LENS) ||
+        (type === DISTS && used > ENOUGH_DISTS)) {
+        return 1;
       }
-      //===//
-      state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;
-      //--- DROPBITS(5) ---//
-      hold >>>= 5;
-      bits -= 5;
-      //---//
-      state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;
-      //--- DROPBITS(5) ---//
-      hold >>>= 5;
-      bits -= 5;
-      //---//
-      state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;
-      //--- DROPBITS(4) ---//
-      hold >>>= 4;
-      bits -= 4;
-      //---//
-//#ifndef PKZIP_BUG_WORKAROUND
-      if (state.nlen > 286 || state.ndist > 30) {
-        strm.msg = 'too many length or distance symbols';
-        state.mode = BAD;
-        break;
+
+      /* point entry in root table to sub-table */
+      low = huff & mask;
+      /*table.op[low] = curr;
+      table.bits[low] = root;
+      table.val[low] = next - opts.table_index;*/
+      table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;
+    }
+  }
+
+  /* fill in remaining table entry if code is incomplete (guaranteed to have
+   at most one remaining entry, since if the code is incomplete, the
+   maximum code length that was allowed to get this far is one bit) */
+  if (huff !== 0) {
+    //table.op[next + huff] = 64;            /* invalid code marker */
+    //table.bits[next + huff] = len - drop;
+    //table.val[next + huff] = 0;
+    table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;
+  }
+
+  /* set return parameters */
+  //opts.table_index += used;
+  opts.bits = root;
+  return 0;
+};
+
+},{"../utils/common":20}],30:[function(require,module,exports){
+'use strict';
+
+module.exports = {
+  '2':    'need dictionary',     /* Z_NEED_DICT       2  */
+  '1':    'stream end',          /* Z_STREAM_END      1  */
+  '0':    '',                    /* Z_OK              0  */
+  '-1':   'file error',          /* Z_ERRNO         (-1) */
+  '-2':   'stream error',        /* Z_STREAM_ERROR  (-2) */
+  '-3':   'data error',          /* Z_DATA_ERROR    (-3) */
+  '-4':   'insufficient memory', /* Z_MEM_ERROR     (-4) */
+  '-5':   'buffer error',        /* Z_BUF_ERROR     (-5) */
+  '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */
+};
+
+},{}],31:[function(require,module,exports){
+'use strict';
+
+
+var utils = require('../utils/common');
+
+/* Public constants ==========================================================*/
+/* ===========================================================================*/
+
+
+//var Z_FILTERED          = 1;
+//var Z_HUFFMAN_ONLY      = 2;
+//var Z_RLE               = 3;
+var Z_FIXED               = 4;
+//var Z_DEFAULT_STRATEGY  = 0;
+
+/* Possible values of the data_type field (though see inflate()) */
+var Z_BINARY              = 0;
+var Z_TEXT                = 1;
+//var Z_ASCII             = 1; // = Z_TEXT
+var Z_UNKNOWN             = 2;
+
+/*============================================================================*/
+
+
+function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }
+
+// From zutil.h
+
+var STORED_BLOCK = 0;
+var STATIC_TREES = 1;
+var DYN_TREES    = 2;
+/* The three kinds of block type */
+
+var MIN_MATCH    = 3;
+var MAX_MATCH    = 258;
+/* The minimum and maximum match lengths */
+
+// From deflate.h
+/* ===========================================================================
+ * Internal compression state.
+ */
+
+var LENGTH_CODES  = 29;
+/* number of length codes, not counting the special END_BLOCK code */
+
+var LITERALS      = 256;
+/* number of literal bytes 0..255 */
+
+var L_CODES       = LITERALS + 1 + LENGTH_CODES;
+/* number of Literal or Length codes, including the END_BLOCK code */
+
+var D_CODES       = 30;
+/* number of distance codes */
+
+var BL_CODES      = 19;
+/* number of codes used to transfer the bit lengths */
+
+var HEAP_SIZE     = 2*L_CODES + 1;
+/* maximum heap size */
+
+var MAX_BITS      = 15;
+/* All codes must not exceed MAX_BITS bits */
+
+var Buf_size      = 16;
+/* size of bit buffer in bi_buf */
+
+
+/* ===========================================================================
+ * Constants
+ */
+
+var MAX_BL_BITS = 7;
+/* Bit length codes must not exceed MAX_BL_BITS bits */
+
+var END_BLOCK   = 256;
+/* end of block literal code */
+
+var REP_3_6     = 16;
+/* repeat previous bit length 3-6 times (2 bits of repeat count) */
+
+var REPZ_3_10   = 17;
+/* repeat a zero length 3-10 times  (3 bits of repeat count) */
+
+var REPZ_11_138 = 18;
+/* repeat a zero length 11-138 times  (7 bits of repeat count) */
+
+var extra_lbits =   /* extra bits for each length code */
+  [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0];
+
+var extra_dbits =   /* extra bits for each distance code */
+  [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13];
+
+var extra_blbits =  /* extra bits for each bit length code */
+  [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7];
+
+var bl_order =
+  [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];
+/* The lengths of the bit length codes are sent in order of decreasing
+ * probability, to avoid transmitting the lengths for unused bit length codes.
+ */
+
+/* ===========================================================================
+ * Local data. These are initialized only once.
+ */
+
+// We pre-fill arrays with 0 to avoid uninitialized gaps
+
+var DIST_CODE_LEN = 512; /* see definition of array dist_code below */
+
+// !!!! Use flat array insdead of structure, Freq = i*2, Len = i*2+1
+var static_ltree  = new Array((L_CODES+2) * 2);
+zero(static_ltree);
+/* The static literal tree. Since the bit lengths are imposed, there is no
+ * need for the L_CODES extra codes used during heap construction. However
+ * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
+ * below).
+ */
+
+var static_dtree  = new Array(D_CODES * 2);
+zero(static_dtree);
+/* The static distance tree. (Actually a trivial tree since all codes use
+ * 5 bits.)
+ */
+
+var _dist_code    = new Array(DIST_CODE_LEN);
+zero(_dist_code);
+/* Distance codes. The first 256 values correspond to the distances
+ * 3 .. 258, the last 256 values correspond to the top 8 bits of
+ * the 15 bit distances.
+ */
+
+var _length_code  = new Array(MAX_MATCH-MIN_MATCH+1);
+zero(_length_code);
+/* length code for each normalized match length (0 == MIN_MATCH) */
+
+var base_length   = new Array(LENGTH_CODES);
+zero(base_length);
+/* First normalized length for each code (0 = MIN_MATCH) */
+
+var base_dist     = new Array(D_CODES);
+zero(base_dist);
+/* First normalized distance for each code (0 = distance of 1) */
+
+
+var StaticTreeDesc = function (static_tree, extra_bits, extra_base, elems, max_length) {
+
+  this.static_tree  = static_tree;  /* static tree or NULL */
+  this.extra_bits   = extra_bits;   /* extra bits for each code or NULL */
+  this.extra_base   = extra_base;   /* base index for extra_bits */
+  this.elems        = elems;        /* max number of elements in the tree */
+  this.max_length   = max_length;   /* max bit length for the codes */
+
+  // show if `static_tree` has data or dummy - needed for monomorphic objects
+  this.has_stree    = static_tree && static_tree.length;
+};
+
+
+var static_l_desc;
+var static_d_desc;
+var static_bl_desc;
+
+
+var TreeDesc = function(dyn_tree, stat_desc) {
+  this.dyn_tree = dyn_tree;     /* the dynamic tree */
+  this.max_code = 0;            /* largest code with non zero frequency */
+  this.stat_desc = stat_desc;   /* the corresponding static tree */
+};
+
+
+
+function d_code(dist) {
+  return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)];
+}
+
+
+/* ===========================================================================
+ * Output a short LSB first on the stream.
+ * IN assertion: there is enough room in pendingBuf.
+ */
+function put_short (s, w) {
+//    put_byte(s, (uch)((w) & 0xff));
+//    put_byte(s, (uch)((ush)(w) >> 8));
+  s.pending_buf[s.pending++] = (w) & 0xff;
+  s.pending_buf[s.pending++] = (w >>> 8) & 0xff;
+}
+
+
+/* ===========================================================================
+ * Send a value on a given number of bits.
+ * IN assertion: length <= 16 and value fits in length bits.
+ */
+function send_bits(s, value, length) {
+  if (s.bi_valid > (Buf_size - length)) {
+    s.bi_buf |= (value << s.bi_valid) & 0xffff;
+    put_short(s, s.bi_buf);
+    s.bi_buf = value >> (Buf_size - s.bi_valid);
+    s.bi_valid += length - Buf_size;
+  } else {
+    s.bi_buf |= (value << s.bi_valid) & 0xffff;
+    s.bi_valid += length;
+  }
+}
+
+
+function send_code(s, c, tree) {
+  send_bits(s, tree[c*2]/*.Code*/, tree[c*2 + 1]/*.Len*/);
+}
+
+
+/* ===========================================================================
+ * Reverse the first len bits of a code, using straightforward code (a faster
+ * method would use a table)
+ * IN assertion: 1 <= len <= 15
+ */
+function bi_reverse(code, len) {
+  var res = 0;
+  do {
+    res |= code & 1;
+    code >>>= 1;
+    res <<= 1;
+  } while (--len > 0);
+  return res >>> 1;
+}
+
+
+/* ===========================================================================
+ * Flush the bit buffer, keeping at most 7 bits in it.
+ */
+function bi_flush(s) {
+  if (s.bi_valid === 16) {
+    put_short(s, s.bi_buf);
+    s.bi_buf = 0;
+    s.bi_valid = 0;
+
+  } else if (s.bi_valid >= 8) {
+    s.pending_buf[s.pending++] = s.bi_buf & 0xff;
+    s.bi_buf >>= 8;
+    s.bi_valid -= 8;
+  }
+}
+
+
+/* ===========================================================================
+ * Compute the optimal bit lengths for a tree and update the total bit length
+ * for the current block.
+ * IN assertion: the fields freq and dad are set, heap[heap_max] and
+ *    above are the tree nodes sorted by increasing frequency.
+ * OUT assertions: the field len is set to the optimal bit length, the
+ *     array bl_count contains the frequencies for each bit length.
+ *     The length opt_len is updated; static_len is also updated if stree is
+ *     not null.
+ */
+function gen_bitlen(s, desc)
+//    deflate_state *s;
+//    tree_desc *desc;    /* the tree descriptor */
+{
+  var tree            = desc.dyn_tree;
+  var max_code        = desc.max_code;
+  var stree           = desc.stat_desc.static_tree;
+  var has_stree       = desc.stat_desc.has_stree;
+  var extra           = desc.stat_desc.extra_bits;
+  var base            = desc.stat_desc.extra_base;
+  var max_length      = desc.stat_desc.max_length;
+  var h;              /* heap index */
+  var n, m;           /* iterate over the tree elements */
+  var bits;           /* bit length */
+  var xbits;          /* extra bits */
+  var f;              /* frequency */
+  var overflow = 0;   /* number of elements with bit length too large */
+
+  for (bits = 0; bits <= MAX_BITS; bits++) {
+    s.bl_count[bits] = 0;
+  }
+
+  /* In a first pass, compute the optimal bit lengths (which may
+   * overflow in the case of the bit length tree).
+   */
+  tree[s.heap[s.heap_max]*2 + 1]/*.Len*/ = 0; /* root of the heap */
+
+  for (h = s.heap_max+1; h < HEAP_SIZE; h++) {
+    n = s.heap[h];
+    bits = tree[tree[n*2 +1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;
+    if (bits > max_length) {
+      bits = max_length;
+      overflow++;
+    }
+    tree[n*2 + 1]/*.Len*/ = bits;
+    /* We overwrite tree[n].Dad which is no longer needed */
+
+    if (n > max_code) { continue; } /* not a leaf node */
+
+    s.bl_count[bits]++;
+    xbits = 0;
+    if (n >= base) {
+      xbits = extra[n-base];
+    }
+    f = tree[n * 2]/*.Freq*/;
+    s.opt_len += f * (bits + xbits);
+    if (has_stree) {
+      s.static_len += f * (stree[n*2 + 1]/*.Len*/ + xbits);
+    }
+  }
+  if (overflow === 0) { return; }
+
+  // Trace((stderr,"\nbit length overflow\n"));
+  /* This happens for example on obj2 and pic of the Calgary corpus */
+
+  /* Find the first bit length which could increase: */
+  do {
+    bits = max_length-1;
+    while (s.bl_count[bits] === 0) { bits--; }
+    s.bl_count[bits]--;      /* move one leaf down the tree */
+    s.bl_count[bits+1] += 2; /* move one overflow item as its brother */
+    s.bl_count[max_length]--;
+    /* The brother of the overflow item also moves one step up,
+     * but this does not affect bl_count[max_length]
+     */
+    overflow -= 2;
+  } while (overflow > 0);
+
+  /* Now recompute all bit lengths, scanning in increasing frequency.
+   * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
+   * lengths instead of fixing only the wrong ones. This idea is taken
+   * from 'ar' written by Haruhiko Okumura.)
+   */
+  for (bits = max_length; bits !== 0; bits--) {
+    n = s.bl_count[bits];
+    while (n !== 0) {
+      m = s.heap[--h];
+      if (m > max_code) { continue; }
+      if (tree[m*2 + 1]/*.Len*/ !== bits) {
+        // Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
+        s.opt_len += (bits - tree[m*2 + 1]/*.Len*/)*tree[m*2]/*.Freq*/;
+        tree[m*2 + 1]/*.Len*/ = bits;
       }
-//#endif
-      //Tracev((stderr, "inflate:       table sizes ok\n"));
-      state.have = 0;
-      state.mode = LENLENS;
-      /* falls through */
-    case LENLENS:
-      while (state.have < state.ncode) {
-        //=== NEEDBITS(3);
-        while (bits < 3) {
-          if (have === 0) { break inf_leave; }
-          have--;
-          hold += input[next++] << bits;
-          bits += 8;
+      n--;
+    }
+  }
+}
+
+
+/* ===========================================================================
+ * Generate the codes for a given tree and bit counts (which need not be
+ * optimal).
+ * IN assertion: the array bl_count contains the bit length statistics for
+ * the given tree and the field len is set for all tree elements.
+ * OUT assertion: the field code is set for all tree elements of non
+ *     zero code length.
+ */
+function gen_codes(tree, max_code, bl_count)
+//    ct_data *tree;             /* the tree to decorate */
+//    int max_code;              /* largest code with non zero frequency */
+//    ushf *bl_count;            /* number of codes at each bit length */
+{
+  var next_code = new Array(MAX_BITS+1); /* next code value for each bit length */
+  var code = 0;              /* running code value */
+  var bits;                  /* bit index */
+  var n;                     /* code index */
+
+  /* The distribution counts are first used to generate the code values
+   * without bit reversal.
+   */
+  for (bits = 1; bits <= MAX_BITS; bits++) {
+    next_code[bits] = code = (code + bl_count[bits-1]) << 1;
+  }
+  /* Check that the bit counts in bl_count are consistent. The last code
+   * must be all ones.
+   */
+  //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
+  //        "inconsistent bit counts");
+  //Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
+
+  for (n = 0;  n <= max_code; n++) {
+    var len = tree[n*2 + 1]/*.Len*/;
+    if (len === 0) { continue; }
+    /* Now reverse the bits */
+    tree[n*2]/*.Code*/ = bi_reverse(next_code[len]++, len);
+
+    //Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
+    //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
+  }
+}
+
+
+/* ===========================================================================
+ * Initialize the various 'constant' tables.
+ */
+function tr_static_init() {
+  var n;        /* iterates over tree elements */
+  var bits;     /* bit counter */
+  var length;   /* length value */
+  var code;     /* code value */
+  var dist;     /* distance index */
+  var bl_count = new Array(MAX_BITS+1);
+  /* number of codes at each bit length for an optimal tree */
+
+  // do check in _tr_init()
+  //if (static_init_done) return;
+
+  /* For some embedded targets, global variables are not initialized: */
+/*#ifdef NO_INIT_GLOBAL_POINTERS
+  static_l_desc.static_tree = static_ltree;
+  static_l_desc.extra_bits = extra_lbits;
+  static_d_desc.static_tree = static_dtree;
+  static_d_desc.extra_bits = extra_dbits;
+  static_bl_desc.extra_bits = extra_blbits;
+#endif*/
+
+  /* Initialize the mapping length (0..255) -> length code (0..28) */
+  length = 0;
+  for (code = 0; code < LENGTH_CODES-1; code++) {
+    base_length[code] = length;
+    for (n = 0; n < (1<<extra_lbits[code]); n++) {
+      _length_code[length++] = code;
+    }
+  }
+  //Assert (length == 256, "tr_static_init: length != 256");
+  /* Note that the length 255 (match length 258) can be represented
+   * in two different ways: code 284 + 5 bits or code 285, so we
+   * overwrite length_code[255] to use the best encoding:
+   */
+  _length_code[length-1] = code;
+
+  /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
+  dist = 0;
+  for (code = 0 ; code < 16; code++) {
+    base_dist[code] = dist;
+    for (n = 0; n < (1<<extra_dbits[code]); n++) {
+      _dist_code[dist++] = code;
+    }
+  }
+  //Assert (dist == 256, "tr_static_init: dist != 256");
+  dist >>= 7; /* from now on, all distances are divided by 128 */
+  for (; code < D_CODES; code++) {
+    base_dist[code] = dist << 7;
+    for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
+      _dist_code[256 + dist++] = code;
+    }
+  }
+  //Assert (dist == 256, "tr_static_init: 256+dist != 512");
+
+  /* Construct the codes of the static literal tree */
+  for (bits = 0; bits <= MAX_BITS; bits++) {
+    bl_count[bits] = 0;
+  }
+
+  n = 0;
+  while (n <= 143) {
+    static_ltree[n*2 + 1]/*.Len*/ = 8;
+    n++;
+    bl_count[8]++;
+  }
+  while (n <= 255) {
+    static_ltree[n*2 + 1]/*.Len*/ = 9;
+    n++;
+    bl_count[9]++;
+  }
+  while (n <= 279) {
+    static_ltree[n*2 + 1]/*.Len*/ = 7;
+    n++;
+    bl_count[7]++;
+  }
+  while (n <= 287) {
+    static_ltree[n*2 + 1]/*.Len*/ = 8;
+    n++;
+    bl_count[8]++;
+  }
+  /* Codes 286 and 287 do not exist, but we must include them in the
+   * tree construction to get a canonical Huffman tree (longest code
+   * all ones)
+   */
+  gen_codes(static_ltree, L_CODES+1, bl_count);
+
+  /* The static distance tree is trivial: */
+  for (n = 0; n < D_CODES; n++) {
+    static_dtree[n*2 + 1]/*.Len*/ = 5;
+    static_dtree[n*2]/*.Code*/ = bi_reverse(n, 5);
+  }
+
+  // Now data ready and we can init static trees
+  static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS);
+  static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0,          D_CODES, MAX_BITS);
+  static_bl_desc =new StaticTreeDesc(new Array(0), extra_blbits, 0,         BL_CODES, MAX_BL_BITS);
+
+  //static_init_done = true;
+}
+
+
+/* ===========================================================================
+ * Initialize a new block.
+ */
+function init_block(s) {
+  var n; /* iterates over tree elements */
+
+  /* Initialize the trees. */
+  for (n = 0; n < L_CODES;  n++) { s.dyn_ltree[n*2]/*.Freq*/ = 0; }
+  for (n = 0; n < D_CODES;  n++) { s.dyn_dtree[n*2]/*.Freq*/ = 0; }
+  for (n = 0; n < BL_CODES; n++) { s.bl_tree[n*2]/*.Freq*/ = 0; }
+
+  s.dyn_ltree[END_BLOCK*2]/*.Freq*/ = 1;
+  s.opt_len = s.static_len = 0;
+  s.last_lit = s.matches = 0;
+}
+
+
+/* ===========================================================================
+ * Flush the bit buffer and align the output on a byte boundary
+ */
+function bi_windup(s)
+{
+  if (s.bi_valid > 8) {
+    put_short(s, s.bi_buf);
+  } else if (s.bi_valid > 0) {
+    //put_byte(s, (Byte)s->bi_buf);
+    s.pending_buf[s.pending++] = s.bi_buf;
+  }
+  s.bi_buf = 0;
+  s.bi_valid = 0;
+}
+
+/* ===========================================================================
+ * Copy a stored block, storing first the length and its
+ * one's complement if requested.
+ */
+function copy_block(s, buf, len, header)
+//DeflateState *s;
+//charf    *buf;    /* the input data */
+//unsigned len;     /* its length */
+//int      header;  /* true if block header must be written */
+{
+  bi_windup(s);        /* align on byte boundary */
+
+  if (header) {
+    put_short(s, len);
+    put_short(s, ~len);
+  }
+//  while (len--) {
+//    put_byte(s, *buf++);
+//  }
+  utils.arraySet(s.pending_buf, s.window, buf, len, s.pending);
+  s.pending += len;
+}
+
+/* ===========================================================================
+ * Compares to subtrees, using the tree depth as tie breaker when
+ * the subtrees have equal frequency. This minimizes the worst case length.
+ */
+function smaller(tree, n, m, depth) {
+  var _n2 = n*2;
+  var _m2 = m*2;
+  return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||
+         (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));
+}
+
+/* ===========================================================================
+ * Restore the heap property by moving down the tree starting at node k,
+ * exchanging a node with the smallest of its two sons if necessary, stopping
+ * when the heap property is re-established (each father smaller than its
+ * two sons).
+ */
+function pqdownheap(s, tree, k)
+//    deflate_state *s;
+//    ct_data *tree;  /* the tree to restore */
+//    int k;               /* node to move down */
+{
+  var v = s.heap[k];
+  var j = k << 1;  /* left son of k */
+  while (j <= s.heap_len) {
+    /* Set j to the smallest of the two sons: */
+    if (j < s.heap_len &&
+      smaller(tree, s.heap[j+1], s.heap[j], s.depth)) {
+      j++;
+    }
+    /* Exit if v is smaller than both sons */
+    if (smaller(tree, v, s.heap[j], s.depth)) { break; }
+
+    /* Exchange v with the smallest son */
+    s.heap[k] = s.heap[j];
+    k = j;
+
+    /* And continue down the tree, setting j to the left son of k */
+    j <<= 1;
+  }
+  s.heap[k] = v;
+}
+
+
+// inlined manually
+// var SMALLEST = 1;
+
+/* ===========================================================================
+ * Send the block data compressed using the given Huffman trees
+ */
+function compress_block(s, ltree, dtree)
+//    deflate_state *s;
+//    const ct_data *ltree; /* literal tree */
+//    const ct_data *dtree; /* distance tree */
+{
+  var dist;           /* distance of matched string */
+  var lc;             /* match length or unmatched char (if dist == 0) */
+  var lx = 0;         /* running index in l_buf */
+  var code;           /* the code to send */
+  var extra;          /* number of extra bits to send */
+
+  if (s.last_lit !== 0) {
+    do {
+      dist = (s.pending_buf[s.d_buf + lx*2] << 8) | (s.pending_buf[s.d_buf + lx*2 + 1]);
+      lc = s.pending_buf[s.l_buf + lx];
+      lx++;
+
+      if (dist === 0) {
+        send_code(s, lc, ltree); /* send a literal byte */
+        //Tracecv(isgraph(lc), (stderr," '%c' ", lc));
+      } else {
+        /* Here, lc is the match length - MIN_MATCH */
+        code = _length_code[lc];
+        send_code(s, code+LITERALS+1, ltree); /* send the length code */
+        extra = extra_lbits[code];
+        if (extra !== 0) {
+          lc -= base_length[code];
+          send_bits(s, lc, extra);       /* send the extra length bits */
         }
-        //===//
-        state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);
-        //--- DROPBITS(3) ---//
-        hold >>>= 3;
-        bits -= 3;
-        //---//
-      }
-      while (state.have < 19) {
-        state.lens[order[state.have++]] = 0;
-      }
-      // We have separate tables & no pointers. 2 commented lines below not needed.
-      //state.next = state.codes;
-      //state.lencode = state.next;
-      // Switch to use dynamic table
-      state.lencode = state.lendyn;
-      state.lenbits = 7;
+        dist--; /* dist is now the match distance - 1 */
+        code = d_code(dist);
+        //Assert (code < D_CODES, "bad d_code");
+
+        send_code(s, code, dtree);       /* send the distance code */
+        extra = extra_dbits[code];
+        if (extra !== 0) {
+          dist -= base_dist[code];
+          send_bits(s, dist, extra);   /* send the extra distance bits */
+        }
+      } /* literal or match pair ? */
+
+      /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
+      //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,
+      //       "pendingBuf overflow");
+
+    } while (lx < s.last_lit);
+  }
+
+  send_code(s, END_BLOCK, ltree);
+}
+
+
+/* ===========================================================================
+ * Construct one Huffman tree and assigns the code bit strings and lengths.
+ * Update the total bit length for the current block.
+ * IN assertion: the field freq is set for all tree elements.
+ * OUT assertions: the fields len and code are set to the optimal bit length
+ *     and corresponding code. The length opt_len is updated; static_len is
+ *     also updated if stree is not null. The field max_code is set.
+ */
+function build_tree(s, desc)
+//    deflate_state *s;
+//    tree_desc *desc; /* the tree descriptor */
+{
+  var tree     = desc.dyn_tree;
+  var stree    = desc.stat_desc.static_tree;
+  var has_stree = desc.stat_desc.has_stree;
+  var elems    = desc.stat_desc.elems;
+  var n, m;          /* iterate over heap elements */
+  var max_code = -1; /* largest code with non zero frequency */
+  var node;          /* new node being created */
+
+  /* Construct the initial heap, with least frequent element in
+   * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
+   * heap[0] is not used.
+   */
+  s.heap_len = 0;
+  s.heap_max = HEAP_SIZE;
+
+  for (n = 0; n < elems; n++) {
+    if (tree[n * 2]/*.Freq*/ !== 0) {
+      s.heap[++s.heap_len] = max_code = n;
+      s.depth[n] = 0;
+
+    } else {
+      tree[n*2 + 1]/*.Len*/ = 0;
+    }
+  }
+
+  /* The pkzip format requires that at least one distance code exists,
+   * and that at least one bit should be sent even if there is only one
+   * possible code. So to avoid special checks later on we force at least
+   * two codes of non zero frequency.
+   */
+  while (s.heap_len < 2) {
+    node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);
+    tree[node * 2]/*.Freq*/ = 1;
+    s.depth[node] = 0;
+    s.opt_len--;
+
+    if (has_stree) {
+      s.static_len -= stree[node*2 + 1]/*.Len*/;
+    }
+    /* node is 0 or 1 so it does not have extra bits */
+  }
+  desc.max_code = max_code;
+
+  /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
+   * establish sub-heaps of increasing lengths:
+   */
+  for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }
+
+  /* Construct the Huffman tree by repeatedly combining the least two
+   * frequent nodes.
+   */
+  node = elems;              /* next internal node of the tree */
+  do {
+    //pqremove(s, tree, n);  /* n = node of least frequency */
+    /*** pqremove ***/
+    n = s.heap[1/*SMALLEST*/];
+    s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];
+    pqdownheap(s, tree, 1/*SMALLEST*/);
+    /***/
+
+    m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */
+
+    s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */
+    s.heap[--s.heap_max] = m;
+
+    /* Create a new node father of n and m */
+    tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;
+    s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;
+    tree[n*2 + 1]/*.Dad*/ = tree[m*2 + 1]/*.Dad*/ = node;
+
+    /* and insert the new node in the heap */
+    s.heap[1/*SMALLEST*/] = node++;
+    pqdownheap(s, tree, 1/*SMALLEST*/);
+
+  } while (s.heap_len >= 2);
+
+  s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];
+
+  /* At this point, the fields freq and dad are set. We can now
+   * generate the bit lengths.
+   */
+  gen_bitlen(s, desc);
+
+  /* The field len is now set, we can generate the bit codes */
+  gen_codes(tree, max_code, s.bl_count);
+}
+
+
+/* ===========================================================================
+ * Scan a literal or distance tree to determine the frequencies of the codes
+ * in the bit length tree.
+ */
+function scan_tree(s, tree, max_code)
+//    deflate_state *s;
+//    ct_data *tree;   /* the tree to be scanned */
+//    int max_code;    /* and its largest code of non zero frequency */
+{
+  var n;                     /* iterates over all tree elements */
+  var prevlen = -1;          /* last emitted length */
+  var curlen;                /* length of current code */
 
-      opts = {bits: state.lenbits};
-      ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);
-      state.lenbits = opts.bits;
+  var nextlen = tree[0*2 + 1]/*.Len*/; /* length of next code */
 
-      if (ret) {
-        strm.msg = 'invalid code lengths set';
-        state.mode = BAD;
-        break;
-      }
-      //Tracev((stderr, "inflate:       code lengths ok\n"));
-      state.have = 0;
-      state.mode = CODELENS;
-      /* falls through */
-    case CODELENS:
-      while (state.have < state.nlen + state.ndist) {
-        for (;;) {
-          here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/
-          here_bits = here >>> 24;
-          here_op = (here >>> 16) & 0xff;
-          here_val = here & 0xffff;
+  var count = 0;             /* repeat count of the current code */
+  var max_count = 7;         /* max repeat count */
+  var min_count = 4;         /* min repeat count */
 
-          if ((here_bits) <= bits) { break; }
-          //--- PULLBYTE() ---//
-          if (have === 0) { break inf_leave; }
-          have--;
-          hold += input[next++] << bits;
-          bits += 8;
-          //---//
-        }
-        if (here_val < 16) {
-          //--- DROPBITS(here.bits) ---//
-          hold >>>= here_bits;
-          bits -= here_bits;
-          //---//
-          state.lens[state.have++] = here_val;
-        }
-        else {
-          if (here_val === 16) {
-            //=== NEEDBITS(here.bits + 2);
-            n = here_bits + 2;
-            while (bits < n) {
-              if (have === 0) { break inf_leave; }
-              have--;
-              hold += input[next++] << bits;
-              bits += 8;
-            }
-            //===//
-            //--- DROPBITS(here.bits) ---//
-            hold >>>= here_bits;
-            bits -= here_bits;
-            //---//
-            if (state.have === 0) {
-              strm.msg = 'invalid bit length repeat';
-              state.mode = BAD;
-              break;
-            }
-            len = state.lens[state.have - 1];
-            copy = 3 + (hold & 0x03);//BITS(2);
-            //--- DROPBITS(2) ---//
-            hold >>>= 2;
-            bits -= 2;
-            //---//
-          }
-          else if (here_val === 17) {
-            //=== NEEDBITS(here.bits + 3);
-            n = here_bits + 3;
-            while (bits < n) {
-              if (have === 0) { break inf_leave; }
-              have--;
-              hold += input[next++] << bits;
-              bits += 8;
-            }
-            //===//
-            //--- DROPBITS(here.bits) ---//
-            hold >>>= here_bits;
-            bits -= here_bits;
-            //---//
-            len = 0;
-            copy = 3 + (hold & 0x07);//BITS(3);
-            //--- DROPBITS(3) ---//
-            hold >>>= 3;
-            bits -= 3;
-            //---//
-          }
-          else {
-            //=== NEEDBITS(here.bits + 7);
-            n = here_bits + 7;
-            while (bits < n) {
-              if (have === 0) { break inf_leave; }
-              have--;
-              hold += input[next++] << bits;
-              bits += 8;
-            }
-            //===//
-            //--- DROPBITS(here.bits) ---//
-            hold >>>= here_bits;
-            bits -= here_bits;
-            //---//
-            len = 0;
-            copy = 11 + (hold & 0x7f);//BITS(7);
-            //--- DROPBITS(7) ---//
-            hold >>>= 7;
-            bits -= 7;
-            //---//
-          }
-          if (state.have + copy > state.nlen + state.ndist) {
-            strm.msg = 'invalid bit length repeat';
-            state.mode = BAD;
-            break;
-          }
-          while (copy--) {
-            state.lens[state.have++] = len;
-          }
-        }
+  if (nextlen === 0) {
+    max_count = 138;
+    min_count = 3;
+  }
+  tree[(max_code+1)*2 + 1]/*.Len*/ = 0xffff; /* guard */
+
+  for (n = 0; n <= max_code; n++) {
+    curlen = nextlen;
+    nextlen = tree[(n+1)*2 + 1]/*.Len*/;
+
+    if (++count < max_count && curlen === nextlen) {
+      continue;
+
+    } else if (count < min_count) {
+      s.bl_tree[curlen * 2]/*.Freq*/ += count;
+
+    } else if (curlen !== 0) {
+
+      if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }
+      s.bl_tree[REP_3_6*2]/*.Freq*/++;
+
+    } else if (count <= 10) {
+      s.bl_tree[REPZ_3_10*2]/*.Freq*/++;
+
+    } else {
+      s.bl_tree[REPZ_11_138*2]/*.Freq*/++;
+    }
+
+    count = 0;
+    prevlen = curlen;
+
+    if (nextlen === 0) {
+      max_count = 138;
+      min_count = 3;
+
+    } else if (curlen === nextlen) {
+      max_count = 6;
+      min_count = 3;
+
+    } else {
+      max_count = 7;
+      min_count = 4;
+    }
+  }
+}
+
+
+/* ===========================================================================
+ * Send a literal or distance tree in compressed form, using the codes in
+ * bl_tree.
+ */
+function send_tree(s, tree, max_code)
+//    deflate_state *s;
+//    ct_data *tree; /* the tree to be scanned */
+//    int max_code;       /* and its largest code of non zero frequency */
+{
+  var n;                     /* iterates over all tree elements */
+  var prevlen = -1;          /* last emitted length */
+  var curlen;                /* length of current code */
+
+  var nextlen = tree[0*2 + 1]/*.Len*/; /* length of next code */
+
+  var count = 0;             /* repeat count of the current code */
+  var max_count = 7;         /* max repeat count */
+  var min_count = 4;         /* min repeat count */
+
+  /* tree[max_code+1].Len = -1; */  /* guard already set */
+  if (nextlen === 0) {
+    max_count = 138;
+    min_count = 3;
+  }
+
+  for (n = 0; n <= max_code; n++) {
+    curlen = nextlen;
+    nextlen = tree[(n+1)*2 + 1]/*.Len*/;
+
+    if (++count < max_count && curlen === nextlen) {
+      continue;
+
+    } else if (count < min_count) {
+      do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);
+
+    } else if (curlen !== 0) {
+      if (curlen !== prevlen) {
+        send_code(s, curlen, s.bl_tree);
+        count--;
       }
+      //Assert(count >= 3 && count <= 6, " 3_6?");
+      send_code(s, REP_3_6, s.bl_tree);
+      send_bits(s, count-3, 2);
+
+    } else if (count <= 10) {
+      send_code(s, REPZ_3_10, s.bl_tree);
+      send_bits(s, count-3, 3);
+
+    } else {
+      send_code(s, REPZ_11_138, s.bl_tree);
+      send_bits(s, count-11, 7);
+    }
+
+    count = 0;
+    prevlen = curlen;
+    if (nextlen === 0) {
+      max_count = 138;
+      min_count = 3;
+
+    } else if (curlen === nextlen) {
+      max_count = 6;
+      min_count = 3;
+
+    } else {
+      max_count = 7;
+      min_count = 4;
+    }
+  }
+}
+
+
+/* ===========================================================================
+ * Construct the Huffman tree for the bit lengths and return the index in
+ * bl_order of the last bit length code to send.
+ */
+function build_bl_tree(s) {
+  var max_blindex;  /* index of last bit length code of non zero freq */
+
+  /* Determine the bit length frequencies for literal and distance trees */
+  scan_tree(s, s.dyn_ltree, s.l_desc.max_code);
+  scan_tree(s, s.dyn_dtree, s.d_desc.max_code);
+
+  /* Build the bit length tree: */
+  build_tree(s, s.bl_desc);
+  /* opt_len now includes the length of the tree representations, except
+   * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
+   */
+
+  /* Determine the number of bit length codes to send. The pkzip format
+   * requires that at least 4 bit length codes be sent. (appnote.txt says
+   * 3 but the actual value used is 4.)
+   */
+  for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {
+    if (s.bl_tree[bl_order[max_blindex]*2 + 1]/*.Len*/ !== 0) {
+      break;
+    }
+  }
+  /* Update opt_len to include the bit length tree and counts */
+  s.opt_len += 3*(max_blindex+1) + 5+5+4;
+  //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
+  //        s->opt_len, s->static_len));
 
-      /* handle error breaks in while */
-      if (state.mode === BAD) { break; }
+  return max_blindex;
+}
 
-      /* check for end-of-block code (better have one) */
-      if (state.lens[256] === 0) {
-        strm.msg = 'invalid code -- missing end-of-block';
-        state.mode = BAD;
-        break;
-      }
 
-      /* build code tables -- note: do not change the lenbits or distbits
-         values here (9 and 6) without reading the comments in inftrees.h
-         concerning the ENOUGH constants, which depend on those values */
-      state.lenbits = 9;
+/* ===========================================================================
+ * Send the header for a block using dynamic Huffman trees: the counts, the
+ * lengths of the bit length codes, the literal tree and the distance tree.
+ * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
+ */
+function send_all_trees(s, lcodes, dcodes, blcodes)
+//    deflate_state *s;
+//    int lcodes, dcodes, blcodes; /* number of codes for each tree */
+{
+  var rank;                    /* index in bl_order */
 
-      opts = {bits: state.lenbits};
-      ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);
-      // We have separate tables & no pointers. 2 commented lines below not needed.
-      // state.next_index = opts.table_index;
-      state.lenbits = opts.bits;
-      // state.lencode = state.next;
+  //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
+  //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
+  //        "too many codes");
+  //Tracev((stderr, "\nbl counts: "));
+  send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */
+  send_bits(s, dcodes-1,   5);
+  send_bits(s, blcodes-4,  4); /* not -3 as stated in appnote.txt */
+  for (rank = 0; rank < blcodes; rank++) {
+    //Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
+    send_bits(s, s.bl_tree[bl_order[rank]*2 + 1]/*.Len*/, 3);
+  }
+  //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
 
-      if (ret) {
-        strm.msg = 'invalid literal/lengths set';
-        state.mode = BAD;
-        break;
-      }
+  send_tree(s, s.dyn_ltree, lcodes-1); /* literal tree */
+  //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
 
-      state.distbits = 6;
-      //state.distcode.copy(state.codes);
-      // Switch to use dynamic table
-      state.distcode = state.distdyn;
-      opts = {bits: state.distbits};
-      ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);
-      // We have separate tables & no pointers. 2 commented lines below not needed.
-      // state.next_index = opts.table_index;
-      state.distbits = opts.bits;
-      // state.distcode = state.next;
+  send_tree(s, s.dyn_dtree, dcodes-1); /* distance tree */
+  //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
+}
 
-      if (ret) {
-        strm.msg = 'invalid distances set';
-        state.mode = BAD;
-        break;
-      }
-      //Tracev((stderr, 'inflate:       codes ok\n'));
-      state.mode = LEN_;
-      if (flush === Z_TREES) { break inf_leave; }
-      /* falls through */
-    case LEN_:
-      state.mode = LEN;
-      /* falls through */
-    case LEN:
-      if (have >= 6 && left >= 258) {
-        //--- RESTORE() ---
-        strm.next_out = put;
-        strm.avail_out = left;
-        strm.next_in = next;
-        strm.avail_in = have;
-        state.hold = hold;
-        state.bits = bits;
-        //---
-        inflate_fast(strm, _out);
-        //--- LOAD() ---
-        put = strm.next_out;
-        output = strm.output;
-        left = strm.avail_out;
-        next = strm.next_in;
-        input = strm.input;
-        have = strm.avail_in;
-        hold = state.hold;
-        bits = state.bits;
-        //---
 
-        if (state.mode === TYPE) {
-          state.back = -1;
-        }
-        break;
-      }
-      state.back = 0;
-      for (;;) {
-        here = state.lencode[hold & ((1 << state.lenbits) -1)];  /*BITS(state.lenbits)*/
-        here_bits = here >>> 24;
-        here_op = (here >>> 16) & 0xff;
-        here_val = here & 0xffff;
+/* ===========================================================================
+ * Check if the data type is TEXT or BINARY, using the following algorithm:
+ * - TEXT if the two conditions below are satisfied:
+ *    a) There are no non-portable control characters belonging to the
+ *       "black list" (0..6, 14..25, 28..31).
+ *    b) There is at least one printable character belonging to the
+ *       "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
+ * - BINARY otherwise.
+ * - The following partially-portable control characters form a
+ *   "gray list" that is ignored in this detection algorithm:
+ *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
+ * IN assertion: the fields Freq of dyn_ltree are set.
+ */
+function detect_data_type(s) {
+  /* black_mask is the bit mask of black-listed bytes
+   * set bits 0..6, 14..25, and 28..31
+   * 0xf3ffc07f = binary 11110011111111111100000001111111
+   */
+  var black_mask = 0xf3ffc07f;
+  var n;
 
-        if (here_bits <= bits) { break; }
-        //--- PULLBYTE() ---//
-        if (have === 0) { break inf_leave; }
-        have--;
-        hold += input[next++] << bits;
-        bits += 8;
-        //---//
-      }
-      if (here_op && (here_op & 0xf0) === 0) {
-        last_bits = here_bits;
-        last_op = here_op;
-        last_val = here_val;
-        for (;;) {
-          here = state.lencode[last_val +
-                  ((hold & ((1 << (last_bits + last_op)) -1))/*BITS(last.bits + last.op)*/ >> last_bits)];
-          here_bits = here >>> 24;
-          here_op = (here >>> 16) & 0xff;
-          here_val = here & 0xffff;
+  /* Check for non-textual ("black-listed") bytes. */
+  for (n = 0; n <= 31; n++, black_mask >>>= 1) {
+    if ((black_mask & 1) && (s.dyn_ltree[n*2]/*.Freq*/ !== 0)) {
+      return Z_BINARY;
+    }
+  }
 
-          if ((last_bits + here_bits) <= bits) { break; }
-          //--- PULLBYTE() ---//
-          if (have === 0) { break inf_leave; }
-          have--;
-          hold += input[next++] << bits;
-          bits += 8;
-          //---//
-        }
-        //--- DROPBITS(last.bits) ---//
-        hold >>>= last_bits;
-        bits -= last_bits;
-        //---//
-        state.back += last_bits;
-      }
-      //--- DROPBITS(here.bits) ---//
-      hold >>>= here_bits;
-      bits -= here_bits;
-      //---//
-      state.back += here_bits;
-      state.length = here_val;
-      if (here_op === 0) {
-        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
-        //        "inflate:         literal '%c'\n" :
-        //        "inflate:         literal 0x%02x\n", here.val));
-        state.mode = LIT;
-        break;
-      }
-      if (here_op & 32) {
-        //Tracevv((stderr, "inflate:         end of block\n"));
-        state.back = -1;
-        state.mode = TYPE;
-        break;
-      }
-      if (here_op & 64) {
-        strm.msg = 'invalid literal/length code';
-        state.mode = BAD;
-        break;
-      }
-      state.extra = here_op & 15;
-      state.mode = LENEXT;
-      /* falls through */
-    case LENEXT:
-      if (state.extra) {
-        //=== NEEDBITS(state.extra);
-        n = state.extra;
-        while (bits < n) {
-          if (have === 0) { break inf_leave; }
-          have--;
-          hold += input[next++] << bits;
-          bits += 8;
-        }
-        //===//
-        state.length += hold & ((1 << state.extra) -1)/*BITS(state.extra)*/;
-        //--- DROPBITS(state.extra) ---//
-        hold >>>= state.extra;
-        bits -= state.extra;
-        //---//
-        state.back += state.extra;
-      }
-      //Tracevv((stderr, "inflate:         length %u\n", state.length));
-      state.was = state.length;
-      state.mode = DIST;
-      /* falls through */
-    case DIST:
-      for (;;) {
-        here = state.distcode[hold & ((1 << state.distbits) -1)];/*BITS(state.distbits)*/
-        here_bits = here >>> 24;
-        here_op = (here >>> 16) & 0xff;
-        here_val = here & 0xffff;
+  /* Check for textual ("white-listed") bytes. */
+  if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||
+      s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {
+    return Z_TEXT;
+  }
+  for (n = 32; n < LITERALS; n++) {
+    if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {
+      return Z_TEXT;
+    }
+  }
+
+  /* There are no "black-listed" or "white-listed" bytes:
+   * this stream either is empty or has tolerated ("gray-listed") bytes only.
+   */
+  return Z_BINARY;
+}
+
+
+var static_init_done = false;
+
+/* ===========================================================================
+ * Initialize the tree data structures for a new zlib stream.
+ */
+function _tr_init(s)
+{
 
-        if ((here_bits) <= bits) { break; }
-        //--- PULLBYTE() ---//
-        if (have === 0) { break inf_leave; }
-        have--;
-        hold += input[next++] << bits;
-        bits += 8;
-        //---//
-      }
-      if ((here_op & 0xf0) === 0) {
-        last_bits = here_bits;
-        last_op = here_op;
-        last_val = here_val;
-        for (;;) {
-          here = state.distcode[last_val +
-                  ((hold & ((1 << (last_bits + last_op)) -1))/*BITS(last.bits + last.op)*/ >> last_bits)];
-          here_bits = here >>> 24;
-          here_op = (here >>> 16) & 0xff;
-          here_val = here & 0xffff;
+  if (!static_init_done) {
+    tr_static_init();
+    static_init_done = true;
+  }
 
-          if ((last_bits + here_bits) <= bits) { break; }
-          //--- PULLBYTE() ---//
-          if (have === 0) { break inf_leave; }
-          have--;
-          hold += input[next++] << bits;
-          bits += 8;
-          //---//
-        }
-        //--- DROPBITS(last.bits) ---//
-        hold >>>= last_bits;
-        bits -= last_bits;
-        //---//
-        state.back += last_bits;
-      }
-      //--- DROPBITS(here.bits) ---//
-      hold >>>= here_bits;
-      bits -= here_bits;
-      //---//
-      state.back += here_bits;
-      if (here_op & 64) {
-        strm.msg = 'invalid distance code';
-        state.mode = BAD;
-        break;
-      }
-      state.offset = here_val;
-      state.extra = (here_op) & 15;
-      state.mode = DISTEXT;
-      /* falls through */
-    case DISTEXT:
-      if (state.extra) {
-        //=== NEEDBITS(state.extra);
-        n = state.extra;
-        while (bits < n) {
-          if (have === 0) { break inf_leave; }
-          have--;
-          hold += input[next++] << bits;
-          bits += 8;
-        }
-        //===//
-        state.offset += hold & ((1 << state.extra) -1)/*BITS(state.extra)*/;
-        //--- DROPBITS(state.extra) ---//
-        hold >>>= state.extra;
-        bits -= state.extra;
-        //---//
-        state.back += state.extra;
-      }
-//#ifdef INFLATE_STRICT
-      if (state.offset > state.dmax) {
-        strm.msg = 'invalid distance too far back';
-        state.mode = BAD;
-        break;
-      }
-//#endif
-      //Tracevv((stderr, "inflate:         distance %u\n", state.offset));
-      state.mode = MATCH;
-      /* falls through */
-    case MATCH:
-      if (left === 0) { break inf_leave; }
-      copy = _out - left;
-      if (state.offset > copy) {         /* copy from window */
-        copy = state.offset - copy;
-        if (copy > state.whave) {
-          if (state.sane) {
-            strm.msg = 'invalid distance too far back';
-            state.mode = BAD;
-            break;
-          }
-// (!) This block is disabled in zlib defailts,
-// don't enable it for binary compatibility
-//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
-//          Trace((stderr, "inflate.c too far\n"));
-//          copy -= state.whave;
-//          if (copy > state.length) { copy = state.length; }
-//          if (copy > left) { copy = left; }
-//          left -= copy;
-//          state.length -= copy;
-//          do {
-//            output[put++] = 0;
-//          } while (--copy);
-//          if (state.length === 0) { state.mode = LEN; }
-//          break;
-//#endif
-        }
-        if (copy > state.wnext) {
-          copy -= state.wnext;
-          from = state.wsize - copy;
-        }
-        else {
-          from = state.wnext - copy;
-        }
-        if (copy > state.length) { copy = state.length; }
-        from_source = state.window;
-      }
-      else {                              /* copy from output */
-        from_source = output;
-        from = put - state.offset;
-        copy = state.length;
-      }
-      if (copy > left) { copy = left; }
-      left -= copy;
-      state.length -= copy;
-      do {
-        output[put++] = from_source[from++];
-      } while (--copy);
-      if (state.length === 0) { state.mode = LEN; }
-      break;
-    case LIT:
-      if (left === 0) { break inf_leave; }
-      output[put++] = state.length;
-      left--;
-      state.mode = LEN;
-      break;
-    case CHECK:
-      if (state.wrap) {
-        //=== NEEDBITS(32);
-        while (bits < 32) {
-          if (have === 0) { break inf_leave; }
-          have--;
-          // Use '|' insdead of '+' to make sure that result is signed
-          hold |= input[next++] << bits;
-          bits += 8;
-        }
-        //===//
-        _out -= left;
-        strm.total_out += _out;
-        state.total += _out;
-        if (_out) {
-          strm.adler = state.check =
-              /*UPDATE(state.check, put - _out, _out);*/
-              (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out));
+  s.l_desc  = new TreeDesc(s.dyn_ltree, static_l_desc);
+  s.d_desc  = new TreeDesc(s.dyn_dtree, static_d_desc);
+  s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);
 
-        }
-        _out = left;
-        // NB: crc32 stored as signed 32-bit int, ZSWAP32 returns signed too
-        if ((state.flags ? hold : ZSWAP32(hold)) !== state.check) {
-          strm.msg = 'incorrect data check';
-          state.mode = BAD;
-          break;
-        }
-        //=== INITBITS();
-        hold = 0;
-        bits = 0;
-        //===//
-        //Tracev((stderr, "inflate:   check matches trailer\n"));
-      }
-      state.mode = LENGTH;
-      /* falls through */
-    case LENGTH:
-      if (state.wrap && state.flags) {
-        //=== NEEDBITS(32);
-        while (bits < 32) {
-          if (have === 0) { break inf_leave; }
-          have--;
-          hold += input[next++] << bits;
-          bits += 8;
-        }
-        //===//
-        if (hold !== (state.total & 0xffffffff)) {
-          strm.msg = 'incorrect length check';
-          state.mode = BAD;
-          break;
-        }
-        //=== INITBITS();
-        hold = 0;
-        bits = 0;
-        //===//
-        //Tracev((stderr, "inflate:   length matches trailer\n"));
-      }
-      state.mode = DONE;
-      /* falls through */
-    case DONE:
-      ret = Z_STREAM_END;
-      break inf_leave;
-    case BAD:
-      ret = Z_DATA_ERROR;
-      break inf_leave;
-    case MEM:
-      return Z_MEM_ERROR;
-    case SYNC:
-      /* falls through */
-    default:
-      return Z_STREAM_ERROR;
+  s.bi_buf = 0;
+  s.bi_valid = 0;
+
+  /* Initialize the first block of the first file: */
+  init_block(s);
+}
+
+
+/* ===========================================================================
+ * Send a stored block
+ */
+function _tr_stored_block(s, buf, stored_len, last)
+//DeflateState *s;
+//charf *buf;       /* input block */
+//ulg stored_len;   /* length of input block */
+//int last;         /* one if this is the last block for a file */
+{
+  send_bits(s, (STORED_BLOCK<<1)+(last ? 1 : 0), 3);    /* send block type */
+  copy_block(s, buf, stored_len, true); /* with header */
+}
+
+
+/* ===========================================================================
+ * Send one empty static block to give enough lookahead for inflate.
+ * This takes 10 bits, of which 7 may remain in the bit buffer.
+ */
+function _tr_align(s) {
+  send_bits(s, STATIC_TREES<<1, 3);
+  send_code(s, END_BLOCK, static_ltree);
+  bi_flush(s);
+}
+
+
+/* ===========================================================================
+ * Determine the best encoding for the current block: dynamic trees, static
+ * trees or store, and output the encoded block to the zip file.
+ */
+function _tr_flush_block(s, buf, stored_len, last)
+//DeflateState *s;
+//charf *buf;       /* input block, or NULL if too old */
+//ulg stored_len;   /* length of input block */
+//int last;         /* one if this is the last block for a file */
+{
+  var opt_lenb, static_lenb;  /* opt_len and static_len in bytes */
+  var max_blindex = 0;        /* index of last bit length code of non zero freq */
+
+  /* Build the Huffman trees unless a stored block is forced */
+  if (s.level > 0) {
+
+    /* Check if the file is binary or text */
+    if (s.strm.data_type === Z_UNKNOWN) {
+      s.strm.data_type = detect_data_type(s);
     }
+
+    /* Construct the literal and distance trees */
+    build_tree(s, s.l_desc);
+    // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
+    //        s->static_len));
+
+    build_tree(s, s.d_desc);
+    // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
+    //        s->static_len));
+    /* At this point, opt_len and static_len are the total bit lengths of
+     * the compressed block data, excluding the tree representations.
+     */
+
+    /* Build the bit length tree for the above two trees, and get the index
+     * in bl_order of the last bit length code to send.
+     */
+    max_blindex = build_bl_tree(s);
+
+    /* Determine the best encoding. Compute the block lengths in bytes. */
+    opt_lenb = (s.opt_len+3+7) >>> 3;
+    static_lenb = (s.static_len+3+7) >>> 3;
+
+    // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
+    //        opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
+    //        s->last_lit));
+
+    if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }
+
+  } else {
+    // Assert(buf != (char*)0, "lost buf");
+    opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
   }
 
-  // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave"
+  if ((stored_len+4 <= opt_lenb) && (buf !== -1)) {
+    /* 4: two words for the lengths */
 
-  /*
-     Return from inflate(), updating the total counts and the check value.
-     If there was no progress during the inflate() call, return a buffer
-     error.  Call updatewindow() to create and/or update the window state.
-     Note: a memory error from inflate() is non-recoverable.
-   */
+    /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
+     * Otherwise we can't have processed more than WSIZE input bytes since
+     * the last block flush, because compression would have been
+     * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
+     * transform a block into a stored block.
+     */
+    _tr_stored_block(s, buf, stored_len, last);
 
-  //--- RESTORE() ---
-  strm.next_out = put;
-  strm.avail_out = left;
-  strm.next_in = next;
-  strm.avail_in = have;
-  state.hold = hold;
-  state.bits = bits;
-  //---
+  } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) {
 
-  if (state.wsize || (_out !== strm.avail_out && state.mode < BAD &&
-                      (state.mode < CHECK || flush !== Z_FINISH))) {
-    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) {
-      state.mode = MEM;
-      return Z_MEM_ERROR;
-    }
+    send_bits(s, (STATIC_TREES<<1) + (last ? 1 : 0), 3);
+    compress_block(s, static_ltree, static_dtree);
+
+  } else {
+    send_bits(s, (DYN_TREES<<1) + (last ? 1 : 0), 3);
+    send_all_trees(s, s.l_desc.max_code+1, s.d_desc.max_code+1, max_blindex+1);
+    compress_block(s, s.dyn_ltree, s.dyn_dtree);
   }
-  _in -= strm.avail_in;
-  _out -= strm.avail_out;
-  strm.total_in += _in;
-  strm.total_out += _out;
-  state.total += _out;
-  if (state.wrap && _out) {
-    strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/
-      (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out));
+  // Assert (s->compressed_len == s->bits_sent, "bad compressed size");
+  /* The above check is made mod 2^32, for files larger than 512 MB
+   * and uLong implemented on 32 bits.
+   */
+  init_block(s);
+
+  if (last) {
+    bi_windup(s);
   }
-  strm.data_type = state.bits + (state.last ? 64 : 0) +
-                    (state.mode === TYPE ? 128 : 0) +
-                    (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);
-  if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) {
-    ret = Z_BUF_ERROR;
+  // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
+  //       s->compressed_len-7*last));
+}
+
+/* ===========================================================================
+ * Save the match info and tally the frequency counts. Return true if
+ * the current block must be flushed.
+ */
+function _tr_tally(s, dist, lc)
+//    deflate_state *s;
+//    unsigned dist;  /* distance of matched string */
+//    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */
+{
+  //var out_length, in_length, dcode;
+
+  s.pending_buf[s.d_buf + s.last_lit * 2]     = (dist >>> 8) & 0xff;
+  s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff;
+
+  s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff;
+  s.last_lit++;
+
+  if (dist === 0) {
+    /* lc is the unmatched char */
+    s.dyn_ltree[lc*2]/*.Freq*/++;
+  } else {
+    s.matches++;
+    /* Here, lc is the match length - MIN_MATCH */
+    dist--;             /* dist = match distance - 1 */
+    //Assert((ush)dist < (ush)MAX_DIST(s) &&
+    //       (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
+    //       (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");
+
+    s.dyn_ltree[(_length_code[lc]+LITERALS+1) * 2]/*.Freq*/++;
+    s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;
   }
-  return ret;
+
+// (!) This block is disabled in zlib defailts,
+// don't enable it for binary compatibility
+
+//#ifdef TRUNCATE_BLOCK
+//  /* Try to guess if it is profitable to stop the current block here */
+//  if ((s.last_lit & 0x1fff) === 0 && s.level > 2) {
+//    /* Compute an upper bound for the compressed length */
+//    out_length = s.last_lit*8;
+//    in_length = s.strstart - s.block_start;
+//
+//    for (dcode = 0; dcode < D_CODES; dcode++) {
+//      out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]);
+//    }
+//    out_length >>>= 3;
+//    //Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",
+//    //       s->last_lit, in_length, out_length,
+//    //       100L - out_length*100L/in_length));
+//    if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) {
+//      return true;
+//    }
+//  }
+//#endif
+
+  return (s.last_lit === s.lit_bufsize-1);
+  /* We avoid equality with lit_bufsize because of wraparound at 64K
+   * on 16 bit machines and because stored blocks are restricted to
+   * 64K-1 bytes.
+   */
+}
+
+exports._tr_init  = _tr_init;
+exports._tr_stored_block = _tr_stored_block;
+exports._tr_flush_block  = _tr_flush_block;
+exports._tr_tally = _tr_tally;
+exports._tr_align = _tr_align;
+
+},{"../utils/common":20}],32:[function(require,module,exports){
+'use strict';
+
+
+function ZStream() {
+  /* next input byte */
+  this.input = null; // JS specific, because we have no pointers
+  this.next_in = 0;
+  /* number of bytes available at input */
+  this.avail_in = 0;
+  /* total number of input bytes read so far */
+  this.total_in = 0;
+  /* next output byte should be put there */
+  this.output = null; // JS specific, because we have no pointers
+  this.next_out = 0;
+  /* remaining free space at output */
+  this.avail_out = 0;
+  /* total number of bytes output so far */
+  this.total_out = 0;
+  /* last error message, NULL if no error */
+  this.msg = ''/*Z_NULL*/;
+  /* not visible by applications */
+  this.state = null;
+  /* best guess about the data type: binary or text */
+  this.data_type = 2/*Z_UNKNOWN*/;
+  /* adler32 value of the uncompressed data */
+  this.adler = 0;
 }
 
-function inflateEnd(strm) {
+module.exports = ZStream;
+
+},{}],33:[function(require,module,exports){
+importScripts('madeline.js')
+var leveljs = require('level-js')
+// var levelup = require('levelup')
+var db = leveljs('./tessdata', function(){
+
+})
+// // 2) put a key & value
+// db.put('name2', 'LevelUP', function (err) {
+//   if (err) return console.log('Ooops!', err) // some kind of I/O error
+
+//   // 3) fetch by key
+//   db.get('name', function (err, value) {
+//     if (err) return console.log('Ooops!', err) // likely the key was not found
+//     console.log('my name is' + value)
+//   })
+// })
+
+
+
+var filesizes = {"afr": 1079573, "ara": 1701536, "aze": 1420865, "bel": 1276820, "ben": 6772012, "bul": 1605615, "cat": 1652368, "ces": 1035441, "chi_sim": 17710414, "chi_tra": 24717749, "chr": 320649, "dan-frak": 677656, "dan": 1972936, "deu-frak": 822644, "deu": 991656, "ell": 859719, "eng": 9453554, "enm": 619254, "epo": 1241212, "equ": 821130, "est": 1905040, "eus": 1641190, "fin": 979418, "fra": 1376221, "frk": 5912963, "frm": 5147082, "glg": 1674938, "grc": 3012615, "heb": 1051501, "hin": 6590065, "hrv": 1926995, "hun": 3074473, "ind": 1874776, "isl": 1634041, "ita": 948593, "ita_old": 3436571, "jpn": 13507168, "kan": 4390317, "kor": 5353098, "lav": 1843944, "lit": 1779240, "mal": 5966263, "meme": 88453, "mkd": 1163087, "mlt": 1463001, "msa": 1665427, "nld": 1134708, "nor": 2191610, "osd": 4274649, "pol": 7024662, "por": 909359, "ron": 915680, "rus": 5969957, "slk-frak": 289885, "slk": 2217342, "slv": 1611338, "spa": 883170, "spa_old": 5647453, "sqi": 1667041, "srp": 1770244, "swa": 757916, "swe": 2451917, "tam": 3498763, "tel": 5795246, "tgl": 1496256, "tha": 3811136, "tur": 3563264, "ukr": 937566, "vie": 2195922}
+
+var pako = require('pako')
+
+var recognize = (function createTesseractInstance(){
+
+	var Module = Tesseract304({
+		TOTAL_MEMORY: 90e6,
+		TesseractProgress: function(percent){
+			postMessage({
+				'progress': {
+					'recognized': percent/100
+				}
+			})
+		}
+	})
+
+	var base = new Module.TessBaseAPI()
+	var loaded_langs = []
+	var loadLanguage = function(lang, cb){ // NodeJS style callback
+		if(loaded_langs.indexOf(lang) != -1){
+			cb(null, lang)		
+		}
+		else{
+			Module.FS_createPath("/","tessdata",true,true)
+
+			var downloadlang = function(shouldcache){
+				postMessage({
+					'progress': lang+' not found in cache, downloading'
+				})
+				var xhr = new XMLHttpRequest();
+				xhr.open('GET', 'https://cdn.rawgit.com/naptha/tessdata/gh-pages/3.02/'+lang+'.traineddata.gz', true);
+				xhr.responseType = 'arraybuffer';
+				xhr.onerror = function(){ cb(xhr, null) }
+				xhr.onprogress = function(e){
+					postMessage({
+						'progress': {
+							'loaded_lang_model': e.loaded/filesizes[lang]
+						}
+					})
+				}
+				xhr.onload = function(){
+					if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) {
+						postMessage({
+							'progress': 'unzipping_lang_model'
+						})
+
+						var response = new Uint8Array(xhr.response)
+
+						var data = pako.inflate(response)
+						postMessage({
+							'progress': 'unzipped_lang_model'
+						})
+
+						Module.FS_createDataFile('tessdata', lang +".traineddata", data, true, false);
+
+						if(shouldcache){
+							db.put(lang, response, function(err){
+								console.log('cached lang')
+							})
+						}
+
+						loaded_langs.push(lang)
+
+						cb(null, lang)
+					} else cb(xhr, null);
+				}
+				xhr.send(null)
+			}
+
+			db.open({compression: false},function(err){
+				if (err) {
+					downloadlang(false)
+				}
+				else {
+					db.get(lang, function (err, value) {
+
+						// err = true
+
+						if (err) {
+							downloadlang(true)
+						}
+						else {
+							value = pako.inflate(value)
+
+							postMessage({
+								'progress': lang+' found in cache, length '+ value.length
+							})
+
+							Module.FS_createDataFile('tessdata', lang +".traineddata", value, true, false);
+							loaded_langs.push(lang)
+							cb(null, lang)
+						}
+					})
+				}
+			})
+		}
+	}
+
+	function DumpLiterallyEverything(){
+			var ri = base.GetIterator();
+			var blocks = [];
+			var block, para, textline, word, symbol;
+
+			function enumToString(value, prefix){
+				return (Object.keys(Module)
+					.filter(function(e){ return e.startsWith(prefix + '_') })
+					.filter(function(e){ return Module[e] === value })
+					.map(function(e){ return e.slice(prefix.length + 1) })[0])
+			}
 
-  if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) {
-    return Z_STREAM_ERROR;
-  }
+			do {
+				if(ri.IsAtBeginningOf(Module.RIL_BLOCK)){
+					var poly = ri.BlockPolygon();
+					var polygon = null;
+					// BlockPolygon() returns null when automatic page segmentation is off
+					if(Module.getPointer(poly) > 0){
+						var n = poly.get_n(),
+							px = poly.get_x(),
+							py = poly.get_y(),
+							polygon = [];
+						for(var i = 0; i < n; i++){
+							polygon.push([px.getValue(i), py.getValue(i)]);
+						}
+						Module._ptaDestroy(Module.getPointer(poly));	
+					}
+					
+					block = {
+						paragraphs: [],
 
-  var state = strm.state;
-  if (state.window) {
-    state.window = null;
-  }
-  strm.state = null;
-  return Z_OK;
-}
+						text: ri.GetUTF8Text(Module.RIL_BLOCK),
+						confidence: ri.Confidence(Module.RIL_BLOCK),
+						baseline: ri.getBaseline(Module.RIL_BLOCK),
+						bbox: ri.getBoundingBox(Module.RIL_BLOCK),
 
-function inflateGetHeader(strm, head) {
-  var state;
+						blocktype: enumToString(ri.BlockType(), 'PT'),
+						polygon: polygon
+					}
+					blocks.push(block)
+				}
+				if(ri.IsAtBeginningOf(Module.RIL_PARA)){
+					para = {
+						lines: [],
 
-  /* check state */
-  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
-  state = strm.state;
-  if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; }
+						text: ri.GetUTF8Text(Module.RIL_PARA),
+						confidence: ri.Confidence(Module.RIL_PARA),
+						baseline: ri.getBaseline(Module.RIL_PARA),
+						bbox: ri.getBoundingBox(Module.RIL_PARA),
 
-  /* save header structure */
-  state.head = head;
-  head.done = false;
-  return Z_OK;
-}
+						is_ltr: !!ri.ParagraphIsLtr()
+					}
+					block.paragraphs.push(para)
+				}
+				if(ri.IsAtBeginningOf(Module.RIL_TEXTLINE)){
+					textline = {
+						words: [],
 
+						text: ri.GetUTF8Text(Module.RIL_TEXTLINE),
+						confidence: ri.Confidence(Module.RIL_TEXTLINE),
+						baseline: ri.getBaseline(Module.RIL_TEXTLINE),
+						bbox: ri.getBoundingBox(Module.RIL_TEXTLINE)
+					}
+					para.lines.push(textline)
+				}
+				if(ri.IsAtBeginningOf(Module.RIL_WORD)){
+					var fontInfo = ri.getWordFontAttributes(),
+						wordDir = ri.WordDirection();
+					word = {
+						symbols: [],
+						choices: [],
 
-exports.inflateReset = inflateReset;
-exports.inflateReset2 = inflateReset2;
-exports.inflateResetKeep = inflateResetKeep;
-exports.inflateInit = inflateInit;
-exports.inflateInit2 = inflateInit2;
-exports.inflate = inflate;
-exports.inflateEnd = inflateEnd;
-exports.inflateGetHeader = inflateGetHeader;
-exports.inflateInfo = 'pako inflate (from Nodeca project)';
+						text: ri.GetUTF8Text(Module.RIL_WORD),
+						confidence: ri.Confidence(Module.RIL_WORD),
+						baseline: ri.getBaseline(Module.RIL_WORD),
+						bbox: ri.getBoundingBox(Module.RIL_WORD),
 
-/* Not implemented
-exports.inflateCopy = inflateCopy;
-exports.inflateGetDictionary = inflateGetDictionary;
-exports.inflateMark = inflateMark;
-exports.inflatePrime = inflatePrime;
-exports.inflateSetDictionary = inflateSetDictionary;
-exports.inflateSync = inflateSync;
-exports.inflateSyncPoint = inflateSyncPoint;
-exports.inflateUndermine = inflateUndermine;
-*/
+						is_numeric: !!ri.WordIsNumeric(),
+						in_dictionary: !!ri.WordIsFromDictionary(),
+						direction: enumToString(wordDir, 'DIR'),
+						language: ri.WordRecognitionLanguage(),
 
-},{"../utils/common":4,"./adler32":6,"./crc32":8,"./inffast":11,"./inftrees":13}],13:[function(require,module,exports){
-'use strict';
+						is_bold: fontInfo.is_bold,
+						is_italic: fontInfo.is_italic,
+						is_underlined: fontInfo.is_underlined,
+						is_monospace: fontInfo.is_monospace,
+						is_serif: fontInfo.is_serif,
+						is_smallcaps: fontInfo.is_smallcaps,
+						font_size: fontInfo.pointsize,
+						font_id: fontInfo.font_id,
+						font_name: fontInfo.font_name,
+					}
+					var wc = new Module.WordChoiceIterator(ri);
+					do {
+						word.choices.push({
+							text: wc.GetUTF8Text(),
+							confidence: wc.Confidence()
+						})
+					} while (wc.Next());
+					Module.destroy(wc)
+					textline.words.push(word)
+				}
+				
+				var image = null;
+				// var pix = ri.GetBinaryImage(Module.RIL_SYMBOL)
+				// var image = pix2array(pix);
+				// // for some reason it seems that things stop working if you destroy pics
+				// Module._pixDestroy(Module.getPointer(pix));
 
+				symbol = {
+					choices: [],
+					image: image,
 
-var utils = require('../utils/common');
+					text: ri.GetUTF8Text(Module.RIL_SYMBOL),
+					confidence: ri.Confidence(Module.RIL_SYMBOL),
+					baseline: ri.getBaseline(Module.RIL_SYMBOL),
+					bbox: ri.getBoundingBox(Module.RIL_SYMBOL),
 
-var MAXBITS = 15;
-var ENOUGH_LENS = 852;
-var ENOUGH_DISTS = 592;
-//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);
+					is_superscript: !!ri.SymbolIsSuperscript(),
+					is_subscript: !!ri.SymbolIsSubscript(),
+					is_dropcap: !!ri.SymbolIsDropcap(),
+				}
+				word.symbols.push(symbol)
+				var ci = new Module.ChoiceIterator(ri);
+				do {
+					symbol.choices.push({
+						text: ci.GetUTF8Text(),
+						confidence: ci.Confidence()
+					})
+				} while (ci.Next());
+				Module.destroy(ci)
+			} while (ri.Next(Module.RIL_SYMBOL));
+			Module.destroy(ri)
 
-var CODES = 0;
-var LENS = 1;
-var DISTS = 2;
+			return {
+				text: base.GetUTF8Text(),
+				html: base.GetHOCRText(),
 
-var lbase = [ /* Length codes 257..285 base */
-  3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
-  35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0
-];
+				confidence: base.MeanTextConf(),
 
-var lext = [ /* Length codes 257..285 extra */
-  16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
-  19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78
-];
+				blocks: blocks,
 
-var dbase = [ /* Distance codes 0..29 base */
-  1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
-  257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
-  8193, 12289, 16385, 24577, 0, 0
-];
+				psm: enumToString(base.GetPageSegMode(), 'PSM'),
+				oem: enumToString(base.oem(), 'OEM'),
+				version: base.Version(),
+			}
+	}
 
-var dext = [ /* Distance codes 0..29 extra */
-  16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
-  23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
-  28, 28, 29, 29, 64, 64
-];
+	function recognize(image, lang, options,cb){
+		var width, height;
+		if(image.data){
+			var src       = image.data;
+			width     	  = image.width, height = image.height;
+			var dst       = new Uint8Array(width * height);
+			var srcLength = src.length | 0, srcLength_16 = (srcLength - 16) | 0;
 
-module.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts)
-{
-  var bits = opts.bits;
-      //here = opts.here; /* table entry for duplication */
+			var coeff_r = 4899, coeff_g = 9617, coeff_b = 1868;
 
-  var len = 0;               /* a code's length in bits */
-  var sym = 0;               /* index of code symbols */
-  var min = 0, max = 0;          /* minimum and maximum code lengths */
-  var root = 0;              /* number of index bits for root table */
-  var curr = 0;              /* number of index bits for current table */
-  var drop = 0;              /* code bits to drop for sub-table */
-  var left = 0;                   /* number of prefix codes available */
-  var used = 0;              /* code entries in table used */
-  var huff = 0;              /* Huffman code */
-  var incr;              /* for incrementing code, index */
-  var fill;              /* index for replicating entries */
-  var low;               /* low bits for current root entry */
-  var mask;              /* mask for low root bits */
-  var next;             /* next available space in table */
-  var base = null;     /* base value table to use */
-  var base_index = 0;
-//  var shoextra;    /* extra bits table to use */
-  var end;                    /* use base and extra for symbol > end */
-  var count = new utils.Buf16(MAXBITS+1); //[MAXBITS+1];    /* number of codes of each length */
-  var offs = new utils.Buf16(MAXBITS+1); //[MAXBITS+1];     /* offsets in table for each length */
-  var extra = null;
-  var extra_index = 0;
+			for (var i = 0, j = 0; i <= srcLength_16; i += 16, j += 4) {
+				// convert to grayscale 4 pixels at a time;
+				// add 8192 = 1<<13 so for int n, float k >= .5,  ((n + k)*(1<<14) >> 14) = 1 + ((n)*(1<<14) >> 14)
+				dst[j]     = src[i+3] //(((src[i] * coeff_r + src[i+1] * coeff_g + src[i+2] * coeff_b + 8192) >> 14) * src[i+3]) >> 8 + 255 - src[i+3];
+				dst[j + 1] = src[i+4+3]//(((src[i+4] * coeff_r + src[i+5] * coeff_g + src[i+6] * coeff_b + 8192) >> 14) * src[i+3]) >> 8 + 255 - src[i+3];
+				dst[j + 2] = src[i+8+3]//(((src[i+8] * coeff_r + src[i+9] * coeff_g + src[i+10] * coeff_b + 8192) >> 14) * src[i+3]) >> 8 + 255 - src[i+3];
+				dst[j + 3] = src[i+12+3]//(((src[i+12] * coeff_r + src[i+13] * coeff_g + src[i+14] * coeff_b + 8192) >> 14) * src[i+3]) >> 8 + 255 - src[i+3];
+			}
+			for (; i < srcLength; i += 4, ++j) //finish up
+				dst[j] = (src[i] * coeff_r + src[i+1] * coeff_g + src[i+2] * coeff_b + 8192) >> 14;
+			
+			image = dst;
+			// for(var i = 0; i < image.length; i++) image[i] = image[i] > 128;
+		}
+		else {
+			throw 'Expected ImageData'
+		}
+		var ptr = Module.allocate(image, 'i8', Module.ALLOC_NORMAL);
+		
+		loadLanguage(lang, function(err, result){
 
-  var here_bits, here_op, here_val;
+			if(err){
+				console.error("error loading", lang);
+				Module._free(ptr); 
+				cb(err, null)
+			}
+			else {
+				base.Init(null, lang)
+				for (var option in options) {
+				    if (options.hasOwnProperty(option)) {
+				        base.SetVariable(option, options[option]);
+				        postMessage({
+							progress: {
+								set_variable: {
+									variable: option,
+									value: options[option]
+								}
+							}
+						})
+				    }
+				}
 
-  /*
-   Process a set of code lengths to create a canonical Huffman code.  The
-   code lengths are lens[0..codes-1].  Each length corresponds to the
-   symbols 0..codes-1.  The Huffman code is generated by first sorting the
-   symbols by length from short to long, and retaining the symbol order
-   for codes with equal lengths.  Then the code starts with all zero bits
-   for the first code of the shortest length, and the codes are integer
-   increments for the same length, and zeros are appended as the length
-   increases.  For the deflate format, these bits are stored backwards
-   from their more natural integer increment ordering, and so when the
-   decoding tables are built in the large loop below, the integer codes
-   are incremented backwards.
 
-   This routine assumes, but does not check, that all of the entries in
-   lens[] are in the range 0..MAXBITS.  The caller must assure this.
-   1..MAXBITS is interpreted as that code length.  zero means that that
-   symbol does not occur in this code.
+				base.SetImage(Module.wrapPointer(ptr), width, height, 1, width)
+				base.SetRectangle(0, 0, width, height)
+				base.GetUTF8Text()
+				var everything = DumpLiterallyEverything()
+				base.End();
+				Module._free(ptr); 
+				cb(null, everything)
 
-   The codes are sorted by computing a count of codes for each length,
-   creating from that a table of starting indices for each length in the
-   sorted table, and then entering the symbols in order in the sorted
-   table.  The sorted table is work[], with that space being provided by
-   the caller.
+			}
+		})
+	}
 
-   The length counts are used for other purposes as well, i.e. finding
-   the minimum and maximum length codes, determining if there are any
-   codes at all, checking for a valid set of lengths, and looking ahead
-   at length counts to determine sub-table sizes when building the
-   decoding tables.
-   */
+	return recognize
+})()
 
-  /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
-  for (len = 0; len <= MAXBITS; len++) {
-    count[len] = 0;
-  }
-  for (sym = 0; sym < codes; sym++) {
-    count[lens[lens_index + sym]]++;
-  }
+onmessage = function(e) {
+	recognize(e.data.image, e.data.lang, e.data.options, function(err, result){
+		postMessage({err:err, result: result})	
+	})
+}
+},{"level-js":1,"pako":17}],34:[function(require,module,exports){
+/*!
+ * The buffer module from node.js, for the browser.
+ *
+ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ * @license  MIT
+ */
 
-  /* bound code lengths, force root to be within code lengths */
-  root = bits;
-  for (max = MAXBITS; max >= 1; max--) {
-    if (count[max] !== 0) { break; }
-  }
-  if (root > max) {
-    root = max;
-  }
-  if (max === 0) {                     /* no symbols to code at all */
-    //table.op[opts.table_index] = 64;  //here.op = (var char)64;    /* invalid code marker */
-    //table.bits[opts.table_index] = 1;   //here.bits = (var char)1;
-    //table.val[opts.table_index++] = 0;   //here.val = (var short)0;
-    table[table_index++] = (1 << 24) | (64 << 16) | 0;
+var base64 = require('base64-js')
+var ieee754 = require('ieee754')
+var isArray = require('is-array')
 
+exports.Buffer = Buffer
+exports.SlowBuffer = SlowBuffer
+exports.INSPECT_MAX_BYTES = 50
+Buffer.poolSize = 8192 // not used by this implementation
 
-    //table.op[opts.table_index] = 64;
-    //table.bits[opts.table_index] = 1;
-    //table.val[opts.table_index++] = 0;
-    table[table_index++] = (1 << 24) | (64 << 16) | 0;
+var kMaxLength = 0x3fffffff
+var rootParent = {}
 
-    opts.bits = 1;
-    return 0;     /* no symbols, but wait for decoding to report error */
-  }
-  for (min = 1; min < max; min++) {
-    if (count[min] !== 0) { break; }
-  }
-  if (root < min) {
-    root = min;
+/**
+ * If `Buffer.TYPED_ARRAY_SUPPORT`:
+ *   === true    Use Uint8Array implementation (fastest)
+ *   === false   Use Object implementation (most compatible, even IE6)
+ *
+ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+ * Opera 11.6+, iOS 4.2+.
+ *
+ * Note:
+ *
+ * - Implementation must support adding new properties to `Uint8Array` instances.
+ *   Firefox 4-29 lacked support, fixed in Firefox 30+.
+ *   See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
+ *
+ *  - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
+ *
+ *  - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
+ *    incorrect length in some situations.
+ *
+ * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they will
+ * get the Object implementation, which is slower but will work correctly.
+ */
+Buffer.TYPED_ARRAY_SUPPORT = (function () {
+  try {
+    var buf = new ArrayBuffer(0)
+    var arr = new Uint8Array(buf)
+    arr.foo = function () { return 42 }
+    return arr.foo() === 42 && // typed array instances can be augmented
+        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
+        new Uint8Array(1).subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
+  } catch (e) {
+    return false
   }
+})()
 
-  /* check for an over-subscribed or incomplete set of lengths */
-  left = 1;
-  for (len = 1; len <= MAXBITS; len++) {
-    left <<= 1;
-    left -= count[len];
-    if (left < 0) {
-      return -1;
-    }        /* over-subscribed */
+/**
+ * Class: Buffer
+ * =============
+ *
+ * The Buffer constructor returns instances of `Uint8Array` that are augmented
+ * with function properties for all the node `Buffer` API functions. We use
+ * `Uint8Array` so that square bracket notation works as expected -- it returns
+ * a single octet.
+ *
+ * By augmenting the instances, we can avoid modifying the `Uint8Array`
+ * prototype.
+ */
+function Buffer (arg) {
+  if (!(this instanceof Buffer)) {
+    // Avoid going through an ArgumentsAdaptorTrampoline in the common case.
+    if (arguments.length > 1) return new Buffer(arg, arguments[1])
+    return new Buffer(arg)
   }
-  if (left > 0 && (type === CODES || max !== 1)) {
-    return -1;                      /* incomplete set */
+
+  this.length = 0
+  this.parent = undefined
+
+  // Common case.
+  if (typeof arg === 'number') {
+    return fromNumber(this, arg)
   }
 
-  /* generate offsets into symbol table for each length for sorting */
-  offs[1] = 0;
-  for (len = 1; len < MAXBITS; len++) {
-    offs[len + 1] = offs[len] + count[len];
+  // Slightly less common case.
+  if (typeof arg === 'string') {
+    return fromString(this, arg, arguments.length > 1 ? arguments[1] : 'utf8')
   }
 
-  /* sort symbols by length, by symbol order within each length */
-  for (sym = 0; sym < codes; sym++) {
-    if (lens[lens_index + sym] !== 0) {
-      work[offs[lens[lens_index + sym]]++] = sym;
+  // Unusual.
+  return fromObject(this, arg)
+}
+
+function fromNumber (that, length) {
+  that = allocate(that, length < 0 ? 0 : checked(length) | 0)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) {
+    for (var i = 0; i < length; i++) {
+      that[i] = 0
     }
   }
+  return that
+}
 
-  /*
-   Create and fill in decoding tables.  In this loop, the table being
-   filled is at next and has curr index bits.  The code being used is huff
-   with length len.  That code is converted to an index by dropping drop
-   bits off of the bottom.  For codes where len is less than drop + curr,
-   those top drop + curr - len bits are incremented through all values to
-   fill the table with replicated entries.
-
-   root is the number of index bits for the root table.  When len exceeds
-   root, sub-tables are created pointed to by the root entry with an index
-   of the low root bits of huff.  This is saved in low to check for when a
-   new sub-table should be started.  drop is zero when the root table is
-   being filled, and drop is root when sub-tables are being filled.
+function fromString (that, string, encoding) {
+  if (typeof encoding !== 'string' || encoding === '') encoding = 'utf8'
 
-   When a new sub-table is needed, it is necessary to look ahead in the
-   code lengths to determine what size sub-table is needed.  The length
-   counts are used for this, and so count[] is decremented as codes are
-   entered in the tables.
+  // Assumption: byteLength() return value is always < kMaxLength.
+  var length = byteLength(string, encoding) | 0
+  that = allocate(that, length)
 
-   used keeps track of how many table entries have been allocated from the
-   provided *table space.  It is checked for LENS and DIST tables against
-   the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
-   the initial root table size constants.  See the comments in inftrees.h
-   for more information.
+  that.write(string, encoding)
+  return that
+}
 
-   sym increments through all symbols, and the loop terminates when
-   all codes of length max, i.e. all codes, have been processed.  This
-   routine permits incomplete codes, so another loop after this one fills
-   in the rest of the decoding tables with invalid code markers.
-   */
+function fromObject (that, object) {
+  if (Buffer.isBuffer(object)) return fromBuffer(that, object)
 
-  /* set up for code type */
-  // poor man optimization - use if-else instead of switch,
-  // to avoid deopts in old v8
-  if (type === CODES) {
-    base = extra = work;    /* dummy value--not used */
-    end = 19;
+  if (isArray(object)) return fromArray(that, object)
 
-  } else if (type === LENS) {
-    base = lbase;
-    base_index -= 257;
-    extra = lext;
-    extra_index -= 257;
-    end = 256;
+  if (object == null) {
+    throw new TypeError('must start with number, buffer, array or string')
+  }
 
-  } else {                    /* DISTS */
-    base = dbase;
-    extra = dext;
-    end = -1;
+  if (typeof ArrayBuffer !== 'undefined' && object.buffer instanceof ArrayBuffer) {
+    return fromTypedArray(that, object)
   }
 
-  /* initialize opts for loop */
-  huff = 0;                   /* starting code */
-  sym = 0;                    /* starting code symbol */
-  len = min;                  /* starting code length */
-  next = table_index;              /* current table to fill in */
-  curr = root;                /* current table index bits */
-  drop = 0;                   /* current bits to drop from code for index */
-  low = -1;                   /* trigger new sub-table when len > root */
-  used = 1 << root;          /* use root table entries */
-  mask = used - 1;            /* mask for comparing low */
+  if (object.length) return fromArrayLike(that, object)
 
-  /* check available table space */
-  if ((type === LENS && used > ENOUGH_LENS) ||
-    (type === DISTS && used > ENOUGH_DISTS)) {
-    return 1;
-  }
+  return fromJsonObject(that, object)
+}
 
-  var i=0;
-  /* process all codes and make table entries */
-  for (;;) {
-    i++;
-    /* create table entry */
-    here_bits = len - drop;
-    if (work[sym] < end) {
-      here_op = 0;
-      here_val = work[sym];
-    }
-    else if (work[sym] > end) {
-      here_op = extra[extra_index + work[sym]];
-      here_val = base[base_index + work[sym]];
-    }
-    else {
-      here_op = 32 + 64;         /* end of block */
-      here_val = 0;
-    }
+function fromBuffer (that, buffer) {
+  var length = checked(buffer.length) | 0
+  that = allocate(that, length)
+  buffer.copy(that, 0, 0, length)
+  return that
+}
 
-    /* replicate for those indices with low len bits equal to huff */
-    incr = 1 << (len - drop);
-    fill = 1 << curr;
-    min = fill;                 /* save offset to next table */
-    do {
-      fill -= incr;
-      table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;
-    } while (fill !== 0);
+function fromArray (that, array) {
+  var length = checked(array.length) | 0
+  that = allocate(that, length)
+  for (var i = 0; i < length; i += 1) {
+    that[i] = array[i] & 255
+  }
+  return that
+}
 
-    /* backwards increment the len-bit code huff */
-    incr = 1 << (len - 1);
-    while (huff & incr) {
-      incr >>= 1;
-    }
-    if (incr !== 0) {
-      huff &= incr - 1;
-      huff += incr;
-    } else {
-      huff = 0;
-    }
+// Duplicate of fromArray() to keep fromArray() monomorphic.
+function fromTypedArray (that, array) {
+  var length = checked(array.length) | 0
+  that = allocate(that, length)
+  // Truncating the elements is probably not what people expect from typed
+  // arrays with BYTES_PER_ELEMENT > 1 but it's compatible with the behavior
+  // of the old Buffer constructor.
+  for (var i = 0; i < length; i += 1) {
+    that[i] = array[i] & 255
+  }
+  return that
+}
 
-    /* go to next symbol, update count, len */
-    sym++;
-    if (--count[len] === 0) {
-      if (len === max) { break; }
-      len = lens[lens_index + work[sym]];
-    }
+function fromArrayLike (that, array) {
+  var length = checked(array.length) | 0
+  that = allocate(that, length)
+  for (var i = 0; i < length; i += 1) {
+    that[i] = array[i] & 255
+  }
+  return that
+}
 
-    /* create new sub-table if needed */
-    if (len > root && (huff & mask) !== low) {
-      /* if first time, transition to sub-tables */
-      if (drop === 0) {
-        drop = root;
-      }
+// Deserialize { type: 'Buffer', data: [1,2,3,...] } into a Buffer object.
+// Returns a zero-length buffer for inputs that don't conform to the spec.
+function fromJsonObject (that, object) {
+  var array
+  var length = 0
 
-      /* increment past last table */
-      next += min;            /* here min is 1 << curr */
+  if (object.type === 'Buffer' && isArray(object.data)) {
+    array = object.data
+    length = checked(array.length) | 0
+  }
+  that = allocate(that, length)
 
-      /* determine length of next table */
-      curr = len - drop;
-      left = 1 << curr;
-      while (curr + drop < max) {
-        left -= count[curr + drop];
-        if (left <= 0) { break; }
-        curr++;
-        left <<= 1;
-      }
+  for (var i = 0; i < length; i += 1) {
+    that[i] = array[i] & 255
+  }
+  return that
+}
 
-      /* check for enough space */
-      used += 1 << curr;
-      if ((type === LENS && used > ENOUGH_LENS) ||
-        (type === DISTS && used > ENOUGH_DISTS)) {
-        return 1;
-      }
+function allocate (that, length) {
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    // Return an augmented `Uint8Array` instance, for best performance
+    that = Buffer._augment(new Uint8Array(length))
+  } else {
+    // Fallback: Return an object instance of the Buffer class
+    that.length = length
+    that._isBuffer = true
+  }
 
-      /* point entry in root table to sub-table */
-      low = huff & mask;
-      /*table.op[low] = curr;
-      table.bits[low] = root;
-      table.val[low] = next - opts.table_index;*/
-      table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;
-    }
+  var fromPool = length !== 0 && length <= Buffer.poolSize >>> 1
+  if (fromPool) that.parent = rootParent
+
+  return that
+}
+
+function checked (length) {
+  // Note: cannot use `length < kMaxLength` here because that fails when
+  // length is NaN (which is otherwise coerced to zero.)
+  if (length >= kMaxLength) {
+    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
+                         'size: 0x' + kMaxLength.toString(16) + ' bytes')
   }
+  return length | 0
+}
 
-  /* fill in remaining table entry if code is incomplete (guaranteed to have
-   at most one remaining entry, since if the code is incomplete, the
-   maximum code length that was allowed to get this far is one bit) */
-  if (huff !== 0) {
-    //table.op[next + huff] = 64;            /* invalid code marker */
-    //table.bits[next + huff] = len - drop;
-    //table.val[next + huff] = 0;
-    table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;
+function SlowBuffer (subject, encoding) {
+  if (!(this instanceof SlowBuffer)) return new SlowBuffer(subject, encoding)
+
+  var buf = new Buffer(subject, encoding)
+  delete buf.parent
+  return buf
+}
+
+Buffer.isBuffer = function isBuffer (b) {
+  return !!(b != null && b._isBuffer)
+}
+
+Buffer.compare = function compare (a, b) {
+  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
+    throw new TypeError('Arguments must be Buffers')
   }
 
-  /* set return parameters */
-  //opts.table_index += used;
-  opts.bits = root;
-  return 0;
-};
+  if (a === b) return 0
 
-},{"../utils/common":4}],14:[function(require,module,exports){
-'use strict';
+  var x = a.length
+  var y = b.length
 
-module.exports = {
-  '2':    'need dictionary',     /* Z_NEED_DICT       2  */
-  '1':    'stream end',          /* Z_STREAM_END      1  */
-  '0':    '',                    /* Z_OK              0  */
-  '-1':   'file error',          /* Z_ERRNO         (-1) */
-  '-2':   'stream error',        /* Z_STREAM_ERROR  (-2) */
-  '-3':   'data error',          /* Z_DATA_ERROR    (-3) */
-  '-4':   'insufficient memory', /* Z_MEM_ERROR     (-4) */
-  '-5':   'buffer error',        /* Z_BUF_ERROR     (-5) */
-  '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */
-};
+  var i = 0
+  var len = Math.min(x, y)
+  while (i < len) {
+    if (a[i] !== b[i]) break
 
-},{}],15:[function(require,module,exports){
-'use strict';
+    ++i
+  }
 
+  if (i !== len) {
+    x = a[i]
+    y = b[i]
+  }
 
-var utils = require('../utils/common');
+  if (x < y) return -1
+  if (y < x) return 1
+  return 0
+}
 
-/* Public constants ==========================================================*/
-/* ===========================================================================*/
+Buffer.isEncoding = function isEncoding (encoding) {
+  switch (String(encoding).toLowerCase()) {
+    case 'hex':
+    case 'utf8':
+    case 'utf-8':
+    case 'ascii':
+    case 'binary':
+    case 'base64':
+    case 'raw':
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      return true
+    default:
+      return false
+  }
+}
 
+Buffer.concat = function concat (list, length) {
+  if (!isArray(list)) throw new TypeError('list argument must be an Array of Buffers.')
 
-//var Z_FILTERED          = 1;
-//var Z_HUFFMAN_ONLY      = 2;
-//var Z_RLE               = 3;
-var Z_FIXED               = 4;
-//var Z_DEFAULT_STRATEGY  = 0;
+  if (list.length === 0) {
+    return new Buffer(0)
+  } else if (list.length === 1) {
+    return list[0]
+  }
 
-/* Possible values of the data_type field (though see inflate()) */
-var Z_BINARY              = 0;
-var Z_TEXT                = 1;
-//var Z_ASCII             = 1; // = Z_TEXT
-var Z_UNKNOWN             = 2;
+  var i
+  if (length === undefined) {
+    length = 0
+    for (i = 0; i < list.length; i++) {
+      length += list[i].length
+    }
+  }
 
-/*============================================================================*/
+  var buf = new Buffer(length)
+  var pos = 0
+  for (i = 0; i < list.length; i++) {
+    var item = list[i]
+    item.copy(buf, pos)
+    pos += item.length
+  }
+  return buf
+}
 
+function byteLength (string, encoding) {
+  if (typeof string !== 'string') string = String(string)
+
+  if (string.length === 0) return 0
+
+  switch (encoding || 'utf8') {
+    case 'ascii':
+    case 'binary':
+    case 'raw':
+      return string.length
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      return string.length * 2
+    case 'hex':
+      return string.length >>> 1
+    case 'utf8':
+    case 'utf-8':
+      return utf8ToBytes(string).length
+    case 'base64':
+      return base64ToBytes(string).length
+    default:
+      return string.length
+  }
+}
+Buffer.byteLength = byteLength
 
-function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }
+// pre-set for values that may exist in the future
+Buffer.prototype.length = undefined
+Buffer.prototype.parent = undefined
 
-// From zutil.h
+// toString(encoding, start=0, end=buffer.length)
+Buffer.prototype.toString = function toString (encoding, start, end) {
+  var loweredCase = false
 
-var STORED_BLOCK = 0;
-var STATIC_TREES = 1;
-var DYN_TREES    = 2;
-/* The three kinds of block type */
+  start = start | 0
+  end = end === undefined || end === Infinity ? this.length : end | 0
 
-var MIN_MATCH    = 3;
-var MAX_MATCH    = 258;
-/* The minimum and maximum match lengths */
+  if (!encoding) encoding = 'utf8'
+  if (start < 0) start = 0
+  if (end > this.length) end = this.length
+  if (end <= start) return ''
 
-// From deflate.h
-/* ===========================================================================
- * Internal compression state.
- */
+  while (true) {
+    switch (encoding) {
+      case 'hex':
+        return hexSlice(this, start, end)
 
-var LENGTH_CODES  = 29;
-/* number of length codes, not counting the special END_BLOCK code */
+      case 'utf8':
+      case 'utf-8':
+        return utf8Slice(this, start, end)
 
-var LITERALS      = 256;
-/* number of literal bytes 0..255 */
+      case 'ascii':
+        return asciiSlice(this, start, end)
 
-var L_CODES       = LITERALS + 1 + LENGTH_CODES;
-/* number of Literal or Length codes, including the END_BLOCK code */
+      case 'binary':
+        return binarySlice(this, start, end)
 
-var D_CODES       = 30;
-/* number of distance codes */
+      case 'base64':
+        return base64Slice(this, start, end)
 
-var BL_CODES      = 19;
-/* number of codes used to transfer the bit lengths */
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return utf16leSlice(this, start, end)
 
-var HEAP_SIZE     = 2*L_CODES + 1;
-/* maximum heap size */
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = (encoding + '').toLowerCase()
+        loweredCase = true
+    }
+  }
+}
 
-var MAX_BITS      = 15;
-/* All codes must not exceed MAX_BITS bits */
+Buffer.prototype.equals = function equals (b) {
+  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+  if (this === b) return true
+  return Buffer.compare(this, b) === 0
+}
 
-var Buf_size      = 16;
-/* size of bit buffer in bi_buf */
+Buffer.prototype.inspect = function inspect () {
+  var str = ''
+  var max = exports.INSPECT_MAX_BYTES
+  if (this.length > 0) {
+    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
+    if (this.length > max) str += ' ... '
+  }
+  return '<Buffer ' + str + '>'
+}
 
+Buffer.prototype.compare = function compare (b) {
+  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+  if (this === b) return 0
+  return Buffer.compare(this, b)
+}
 
-/* ===========================================================================
- * Constants
- */
+Buffer.prototype.indexOf = function indexOf (val, byteOffset) {
+  if (byteOffset > 0x7fffffff) byteOffset = 0x7fffffff
+  else if (byteOffset < -0x80000000) byteOffset = -0x80000000
+  byteOffset >>= 0
 
-var MAX_BL_BITS = 7;
-/* Bit length codes must not exceed MAX_BL_BITS bits */
+  if (this.length === 0) return -1
+  if (byteOffset >= this.length) return -1
 
-var END_BLOCK   = 256;
-/* end of block literal code */
+  // Negative offsets start from the end of the buffer
+  if (byteOffset < 0) byteOffset = Math.max(this.length + byteOffset, 0)
 
-var REP_3_6     = 16;
-/* repeat previous bit length 3-6 times (2 bits of repeat count) */
+  if (typeof val === 'string') {
+    if (val.length === 0) return -1 // special case: looking for empty string always fails
+    return String.prototype.indexOf.call(this, val, byteOffset)
+  }
+  if (Buffer.isBuffer(val)) {
+    return arrayIndexOf(this, val, byteOffset)
+  }
+  if (typeof val === 'number') {
+    if (Buffer.TYPED_ARRAY_SUPPORT && Uint8Array.prototype.indexOf === 'function') {
+      return Uint8Array.prototype.indexOf.call(this, val, byteOffset)
+    }
+    return arrayIndexOf(this, [ val ], byteOffset)
+  }
 
-var REPZ_3_10   = 17;
-/* repeat a zero length 3-10 times  (3 bits of repeat count) */
+  function arrayIndexOf (arr, val, byteOffset) {
+    var foundIndex = -1
+    for (var i = 0; byteOffset + i < arr.length; i++) {
+      if (arr[byteOffset + i] === val[foundIndex === -1 ? 0 : i - foundIndex]) {
+        if (foundIndex === -1) foundIndex = i
+        if (i - foundIndex + 1 === val.length) return byteOffset + foundIndex
+      } else {
+        foundIndex = -1
+      }
+    }
+    return -1
+  }
 
-var REPZ_11_138 = 18;
-/* repeat a zero length 11-138 times  (7 bits of repeat count) */
+  throw new TypeError('val must be string, number or Buffer')
+}
 
-var extra_lbits =   /* extra bits for each length code */
-  [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0];
+// `get` will be removed in Node 0.13+
+Buffer.prototype.get = function get (offset) {
+  console.log('.get() is deprecated. Access using array indexes instead.')
+  return this.readUInt8(offset)
+}
 
-var extra_dbits =   /* extra bits for each distance code */
-  [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13];
+// `set` will be removed in Node 0.13+
+Buffer.prototype.set = function set (v, offset) {
+  console.log('.set() is deprecated. Access using array indexes instead.')
+  return this.writeUInt8(v, offset)
+}
 
-var extra_blbits =  /* extra bits for each bit length code */
-  [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7];
+function hexWrite (buf, string, offset, length) {
+  offset = Number(offset) || 0
+  var remaining = buf.length - offset
+  if (!length) {
+    length = remaining
+  } else {
+    length = Number(length)
+    if (length > remaining) {
+      length = remaining
+    }
+  }
 
-var bl_order =
-  [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];
-/* The lengths of the bit length codes are sent in order of decreasing
- * probability, to avoid transmitting the lengths for unused bit length codes.
- */
+  // must be an even number of digits
+  var strLen = string.length
+  if (strLen % 2 !== 0) throw new Error('Invalid hex string')
 
-/* ===========================================================================
- * Local data. These are initialized only once.
- */
+  if (length > strLen / 2) {
+    length = strLen / 2
+  }
+  for (var i = 0; i < length; i++) {
+    var parsed = parseInt(string.substr(i * 2, 2), 16)
+    if (isNaN(parsed)) throw new Error('Invalid hex string')
+    buf[offset + i] = parsed
+  }
+  return i
+}
 
-// We pre-fill arrays with 0 to avoid uninitialized gaps
+function utf8Write (buf, string, offset, length) {
+  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+}
 
-var DIST_CODE_LEN = 512; /* see definition of array dist_code below */
+function asciiWrite (buf, string, offset, length) {
+  return blitBuffer(asciiToBytes(string), buf, offset, length)
+}
 
-// !!!! Use flat array insdead of structure, Freq = i*2, Len = i*2+1
-var static_ltree  = new Array((L_CODES+2) * 2);
-zero(static_ltree);
-/* The static literal tree. Since the bit lengths are imposed, there is no
- * need for the L_CODES extra codes used during heap construction. However
- * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
- * below).
- */
+function binaryWrite (buf, string, offset, length) {
+  return asciiWrite(buf, string, offset, length)
+}
 
-var static_dtree  = new Array(D_CODES * 2);
-zero(static_dtree);
-/* The static distance tree. (Actually a trivial tree since all codes use
- * 5 bits.)
- */
+function base64Write (buf, string, offset, length) {
+  return blitBuffer(base64ToBytes(string), buf, offset, length)
+}
 
-var _dist_code    = new Array(DIST_CODE_LEN);
-zero(_dist_code);
-/* Distance codes. The first 256 values correspond to the distances
- * 3 .. 258, the last 256 values correspond to the top 8 bits of
- * the 15 bit distances.
- */
+function ucs2Write (buf, string, offset, length) {
+  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+}
 
-var _length_code  = new Array(MAX_MATCH-MIN_MATCH+1);
-zero(_length_code);
-/* length code for each normalized match length (0 == MIN_MATCH) */
+Buffer.prototype.write = function write (string, offset, length, encoding) {
+  // Buffer#write(string)
+  if (offset === undefined) {
+    encoding = 'utf8'
+    length = this.length
+    offset = 0
+  // Buffer#write(string, encoding)
+  } else if (length === undefined && typeof offset === 'string') {
+    encoding = offset
+    length = this.length
+    offset = 0
+  // Buffer#write(string, offset[, length][, encoding])
+  } else if (isFinite(offset)) {
+    offset = offset | 0
+    if (isFinite(length)) {
+      length = length | 0
+      if (encoding === undefined) encoding = 'utf8'
+    } else {
+      encoding = length
+      length = undefined
+    }
+  // legacy write(string, encoding, offset, length) - remove in v0.13
+  } else {
+    var swap = encoding
+    encoding = offset
+    offset = length | 0
+    length = swap
+  }
 
-var base_length   = new Array(LENGTH_CODES);
-zero(base_length);
-/* First normalized length for each code (0 = MIN_MATCH) */
+  var remaining = this.length - offset
+  if (length === undefined || length > remaining) length = remaining
 
-var base_dist     = new Array(D_CODES);
-zero(base_dist);
-/* First normalized distance for each code (0 = distance of 1) */
+  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
+    throw new RangeError('attempt to write outside buffer bounds')
+  }
 
+  if (!encoding) encoding = 'utf8'
 
-var StaticTreeDesc = function (static_tree, extra_bits, extra_base, elems, max_length) {
+  var loweredCase = false
+  for (;;) {
+    switch (encoding) {
+      case 'hex':
+        return hexWrite(this, string, offset, length)
+
+      case 'utf8':
+      case 'utf-8':
+        return utf8Write(this, string, offset, length)
+
+      case 'ascii':
+        return asciiWrite(this, string, offset, length)
+
+      case 'binary':
+        return binaryWrite(this, string, offset, length)
+
+      case 'base64':
+        // Warning: maxLength not taken into account in base64Write
+        return base64Write(this, string, offset, length)
+
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return ucs2Write(this, string, offset, length)
+
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = ('' + encoding).toLowerCase()
+        loweredCase = true
+    }
+  }
+}
 
-  this.static_tree  = static_tree;  /* static tree or NULL */
-  this.extra_bits   = extra_bits;   /* extra bits for each code or NULL */
-  this.extra_base   = extra_base;   /* base index for extra_bits */
-  this.elems        = elems;        /* max number of elements in the tree */
-  this.max_length   = max_length;   /* max bit length for the codes */
+Buffer.prototype.toJSON = function toJSON () {
+  return {
+    type: 'Buffer',
+    data: Array.prototype.slice.call(this._arr || this, 0)
+  }
+}
 
-  // show if `static_tree` has data or dummy - needed for monomorphic objects
-  this.has_stree    = static_tree && static_tree.length;
-};
+function base64Slice (buf, start, end) {
+  if (start === 0 && end === buf.length) {
+    return base64.fromByteArray(buf)
+  } else {
+    return base64.fromByteArray(buf.slice(start, end))
+  }
+}
 
+function utf8Slice (buf, start, end) {
+  var res = ''
+  var tmp = ''
+  end = Math.min(buf.length, end)
 
-var static_l_desc;
-var static_d_desc;
-var static_bl_desc;
+  for (var i = start; i < end; i++) {
+    if (buf[i] <= 0x7F) {
+      res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
+      tmp = ''
+    } else {
+      tmp += '%' + buf[i].toString(16)
+    }
+  }
 
+  return res + decodeUtf8Char(tmp)
+}
 
-var TreeDesc = function(dyn_tree, stat_desc) {
-  this.dyn_tree = dyn_tree;     /* the dynamic tree */
-  this.max_code = 0;            /* largest code with non zero frequency */
-  this.stat_desc = stat_desc;   /* the corresponding static tree */
-};
+function asciiSlice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
 
+  for (var i = start; i < end; i++) {
+    ret += String.fromCharCode(buf[i] & 0x7F)
+  }
+  return ret
+}
 
+function binarySlice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
 
-function d_code(dist) {
-  return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)];
+  for (var i = start; i < end; i++) {
+    ret += String.fromCharCode(buf[i])
+  }
+  return ret
 }
 
+function hexSlice (buf, start, end) {
+  var len = buf.length
 
-/* ===========================================================================
- * Output a short LSB first on the stream.
- * IN assertion: there is enough room in pendingBuf.
- */
-function put_short (s, w) {
-//    put_byte(s, (uch)((w) & 0xff));
-//    put_byte(s, (uch)((ush)(w) >> 8));
-  s.pending_buf[s.pending++] = (w) & 0xff;
-  s.pending_buf[s.pending++] = (w >>> 8) & 0xff;
+  if (!start || start < 0) start = 0
+  if (!end || end < 0 || end > len) end = len
+
+  var out = ''
+  for (var i = start; i < end; i++) {
+    out += toHex(buf[i])
+  }
+  return out
 }
 
+function utf16leSlice (buf, start, end) {
+  var bytes = buf.slice(start, end)
+  var res = ''
+  for (var i = 0; i < bytes.length; i += 2) {
+    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
+  }
+  return res
+}
 
-/* ===========================================================================
- * Send a value on a given number of bits.
- * IN assertion: length <= 16 and value fits in length bits.
- */
-function send_bits(s, value, length) {
-  if (s.bi_valid > (Buf_size - length)) {
-    s.bi_buf |= (value << s.bi_valid) & 0xffff;
-    put_short(s, s.bi_buf);
-    s.bi_buf = value >> (Buf_size - s.bi_valid);
-    s.bi_valid += length - Buf_size;
+Buffer.prototype.slice = function slice (start, end) {
+  var len = this.length
+  start = ~~start
+  end = end === undefined ? len : ~~end
+
+  if (start < 0) {
+    start += len
+    if (start < 0) start = 0
+  } else if (start > len) {
+    start = len
+  }
+
+  if (end < 0) {
+    end += len
+    if (end < 0) end = 0
+  } else if (end > len) {
+    end = len
+  }
+
+  if (end < start) end = start
+
+  var newBuf
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    newBuf = Buffer._augment(this.subarray(start, end))
   } else {
-    s.bi_buf |= (value << s.bi_valid) & 0xffff;
-    s.bi_valid += length;
+    var sliceLen = end - start
+    newBuf = new Buffer(sliceLen, undefined)
+    for (var i = 0; i < sliceLen; i++) {
+      newBuf[i] = this[i + start]
+    }
+  }
+
+  if (newBuf.length) newBuf.parent = this.parent || this
+
+  return newBuf
+}
+
+/*
+ * Need to make sure that buffer isn't trying to write out of bounds.
+ */
+function checkOffset (offset, ext, length) {
+  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
+  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+}
+
+Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
+  offset = offset | 0
+  byteLength = byteLength | 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
   }
+
+  return val
 }
 
+Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
+  offset = offset | 0
+  byteLength = byteLength | 0
+  if (!noAssert) {
+    checkOffset(offset, byteLength, this.length)
+  }
 
-function send_code(s, c, tree) {
-  send_bits(s, tree[c*2]/*.Code*/, tree[c*2 + 1]/*.Len*/);
+  var val = this[offset + --byteLength]
+  var mul = 1
+  while (byteLength > 0 && (mul *= 0x100)) {
+    val += this[offset + --byteLength] * mul
+  }
+
+  return val
 }
 
+Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  return this[offset]
+}
 
-/* ===========================================================================
- * Reverse the first len bits of a code, using straightforward code (a faster
- * method would use a table)
- * IN assertion: 1 <= len <= 15
- */
-function bi_reverse(code, len) {
-  var res = 0;
-  do {
-    res |= code & 1;
-    code >>>= 1;
-    res <<= 1;
-  } while (--len > 0);
-  return res >>> 1;
+Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return this[offset] | (this[offset + 1] << 8)
 }
 
+Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return (this[offset] << 8) | this[offset + 1]
+}
 
-/* ===========================================================================
- * Flush the bit buffer, keeping at most 7 bits in it.
- */
-function bi_flush(s) {
-  if (s.bi_valid === 16) {
-    put_short(s, s.bi_buf);
-    s.bi_buf = 0;
-    s.bi_valid = 0;
+Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
 
-  } else if (s.bi_valid >= 8) {
-    s.pending_buf[s.pending++] = s.bi_buf & 0xff;
-    s.bi_buf >>= 8;
-    s.bi_valid -= 8;
-  }
+  return ((this[offset]) |
+      (this[offset + 1] << 8) |
+      (this[offset + 2] << 16)) +
+      (this[offset + 3] * 0x1000000)
 }
 
+Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
 
-/* ===========================================================================
- * Compute the optimal bit lengths for a tree and update the total bit length
- * for the current block.
- * IN assertion: the fields freq and dad are set, heap[heap_max] and
- *    above are the tree nodes sorted by increasing frequency.
- * OUT assertions: the field len is set to the optimal bit length, the
- *     array bl_count contains the frequencies for each bit length.
- *     The length opt_len is updated; static_len is also updated if stree is
- *     not null.
- */
-function gen_bitlen(s, desc)
-//    deflate_state *s;
-//    tree_desc *desc;    /* the tree descriptor */
-{
-  var tree            = desc.dyn_tree;
-  var max_code        = desc.max_code;
-  var stree           = desc.stat_desc.static_tree;
-  var has_stree       = desc.stat_desc.has_stree;
-  var extra           = desc.stat_desc.extra_bits;
-  var base            = desc.stat_desc.extra_base;
-  var max_length      = desc.stat_desc.max_length;
-  var h;              /* heap index */
-  var n, m;           /* iterate over the tree elements */
-  var bits;           /* bit length */
-  var xbits;          /* extra bits */
-  var f;              /* frequency */
-  var overflow = 0;   /* number of elements with bit length too large */
+  return (this[offset] * 0x1000000) +
+    ((this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    this[offset + 3])
+}
 
-  for (bits = 0; bits <= MAX_BITS; bits++) {
-    s.bl_count[bits] = 0;
+Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
+  offset = offset | 0
+  byteLength = byteLength | 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
   }
+  mul *= 0x80
 
-  /* In a first pass, compute the optimal bit lengths (which may
-   * overflow in the case of the bit length tree).
-   */
-  tree[s.heap[s.heap_max]*2 + 1]/*.Len*/ = 0; /* root of the heap */
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
 
-  for (h = s.heap_max+1; h < HEAP_SIZE; h++) {
-    n = s.heap[h];
-    bits = tree[tree[n*2 +1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;
-    if (bits > max_length) {
-      bits = max_length;
-      overflow++;
-    }
-    tree[n*2 + 1]/*.Len*/ = bits;
-    /* We overwrite tree[n].Dad which is no longer needed */
+  return val
+}
 
-    if (n > max_code) { continue; } /* not a leaf node */
+Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
+  offset = offset | 0
+  byteLength = byteLength | 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
 
-    s.bl_count[bits]++;
-    xbits = 0;
-    if (n >= base) {
-      xbits = extra[n-base];
-    }
-    f = tree[n * 2]/*.Freq*/;
-    s.opt_len += f * (bits + xbits);
-    if (has_stree) {
-      s.static_len += f * (stree[n*2 + 1]/*.Len*/ + xbits);
-    }
+  var i = byteLength
+  var mul = 1
+  var val = this[offset + --i]
+  while (i > 0 && (mul *= 0x100)) {
+    val += this[offset + --i] * mul
   }
-  if (overflow === 0) { return; }
+  mul *= 0x80
 
-  // Trace((stderr,"\nbit length overflow\n"));
-  /* This happens for example on obj2 and pic of the Calgary corpus */
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
 
-  /* Find the first bit length which could increase: */
-  do {
-    bits = max_length-1;
-    while (s.bl_count[bits] === 0) { bits--; }
-    s.bl_count[bits]--;      /* move one leaf down the tree */
-    s.bl_count[bits+1] += 2; /* move one overflow item as its brother */
-    s.bl_count[max_length]--;
-    /* The brother of the overflow item also moves one step up,
-     * but this does not affect bl_count[max_length]
-     */
-    overflow -= 2;
-  } while (overflow > 0);
+  return val
+}
 
-  /* Now recompute all bit lengths, scanning in increasing frequency.
-   * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
-   * lengths instead of fixing only the wrong ones. This idea is taken
-   * from 'ar' written by Haruhiko Okumura.)
-   */
-  for (bits = max_length; bits !== 0; bits--) {
-    n = s.bl_count[bits];
-    while (n !== 0) {
-      m = s.heap[--h];
-      if (m > max_code) { continue; }
-      if (tree[m*2 + 1]/*.Len*/ !== bits) {
-        // Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
-        s.opt_len += (bits - tree[m*2 + 1]/*.Len*/)*tree[m*2]/*.Freq*/;
-        tree[m*2 + 1]/*.Len*/ = bits;
-      }
-      n--;
-    }
-  }
+Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  if (!(this[offset] & 0x80)) return (this[offset])
+  return ((0xff - this[offset] + 1) * -1)
 }
 
+Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset] | (this[offset + 1] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
 
-/* ===========================================================================
- * Generate the codes for a given tree and bit counts (which need not be
- * optimal).
- * IN assertion: the array bl_count contains the bit length statistics for
- * the given tree and the field len is set for all tree elements.
- * OUT assertion: the field code is set for all tree elements of non
- *     zero code length.
- */
-function gen_codes(tree, max_code, bl_count)
-//    ct_data *tree;             /* the tree to decorate */
-//    int max_code;              /* largest code with non zero frequency */
-//    ushf *bl_count;            /* number of codes at each bit length */
-{
-  var next_code = new Array(MAX_BITS+1); /* next code value for each bit length */
-  var code = 0;              /* running code value */
-  var bits;                  /* bit index */
-  var n;                     /* code index */
+Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset + 1] | (this[offset] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
 
-  /* The distribution counts are first used to generate the code values
-   * without bit reversal.
-   */
-  for (bits = 1; bits <= MAX_BITS; bits++) {
-    next_code[bits] = code = (code + bl_count[bits-1]) << 1;
-  }
-  /* Check that the bit counts in bl_count are consistent. The last code
-   * must be all ones.
-   */
-  //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
-  //        "inconsistent bit counts");
-  //Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
+Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
 
-  for (n = 0;  n <= max_code; n++) {
-    var len = tree[n*2 + 1]/*.Len*/;
-    if (len === 0) { continue; }
-    /* Now reverse the bits */
-    tree[n*2]/*.Code*/ = bi_reverse(next_code[len]++, len);
+  return (this[offset]) |
+    (this[offset + 1] << 8) |
+    (this[offset + 2] << 16) |
+    (this[offset + 3] << 24)
+}
 
-    //Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
-    //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
-  }
+Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset] << 24) |
+    (this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    (this[offset + 3])
 }
 
+Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, true, 23, 4)
+}
 
-/* ===========================================================================
- * Initialize the various 'constant' tables.
- */
-function tr_static_init() {
-  var n;        /* iterates over tree elements */
-  var bits;     /* bit counter */
-  var length;   /* length value */
-  var code;     /* code value */
-  var dist;     /* distance index */
-  var bl_count = new Array(MAX_BITS+1);
-  /* number of codes at each bit length for an optimal tree */
+Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, false, 23, 4)
+}
 
-  // do check in _tr_init()
-  //if (static_init_done) return;
+Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, true, 52, 8)
+}
 
-  /* For some embedded targets, global variables are not initialized: */
-/*#ifdef NO_INIT_GLOBAL_POINTERS
-  static_l_desc.static_tree = static_ltree;
-  static_l_desc.extra_bits = extra_lbits;
-  static_d_desc.static_tree = static_dtree;
-  static_d_desc.extra_bits = extra_dbits;
-  static_bl_desc.extra_bits = extra_blbits;
-#endif*/
+Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, false, 52, 8)
+}
 
-  /* Initialize the mapping length (0..255) -> length code (0..28) */
-  length = 0;
-  for (code = 0; code < LENGTH_CODES-1; code++) {
-    base_length[code] = length;
-    for (n = 0; n < (1<<extra_lbits[code]); n++) {
-      _length_code[length++] = code;
-    }
-  }
-  //Assert (length == 256, "tr_static_init: length != 256");
-  /* Note that the length 255 (match length 258) can be represented
-   * in two different ways: code 284 + 5 bits or code 285, so we
-   * overwrite length_code[255] to use the best encoding:
-   */
-  _length_code[length-1] = code;
+function checkInt (buf, value, offset, ext, max, min) {
+  if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
+  if (value > max || value < min) throw new RangeError('value is out of bounds')
+  if (offset + ext > buf.length) throw new RangeError('index out of range')
+}
 
-  /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
-  dist = 0;
-  for (code = 0 ; code < 16; code++) {
-    base_dist[code] = dist;
-    for (n = 0; n < (1<<extra_dbits[code]); n++) {
-      _dist_code[dist++] = code;
-    }
+Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset | 0
+  byteLength = byteLength | 0
+  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
+
+  var mul = 1
+  var i = 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) & 0xFF
   }
-  //Assert (dist == 256, "tr_static_init: dist != 256");
-  dist >>= 7; /* from now on, all distances are divided by 128 */
-  for (; code < D_CODES; code++) {
-    base_dist[code] = dist << 7;
-    for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
-      _dist_code[256 + dist++] = code;
-    }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset | 0
+  byteLength = byteLength | 0
+  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)
+
+  var i = byteLength - 1
+  var mul = 1
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) & 0xFF
   }
-  //Assert (dist == 256, "tr_static_init: 256+dist != 512");
 
-  /* Construct the codes of the static literal tree */
-  for (bits = 0; bits <= MAX_BITS; bits++) {
-    bl_count[bits] = 0;
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+  this[offset] = value
+  return offset + 1
+}
+
+function objectWriteUInt16 (buf, value, offset, littleEndian) {
+  if (value < 0) value = 0xffff + value + 1
+  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
+    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
+      (littleEndian ? i : 1 - i) * 8
   }
+}
 
-  n = 0;
-  while (n <= 143) {
-    static_ltree[n*2 + 1]/*.Len*/ = 8;
-    n++;
-    bl_count[8]++;
+Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = value
+    this[offset + 1] = (value >>> 8)
+  } else {
+    objectWriteUInt16(this, value, offset, true)
   }
-  while (n <= 255) {
-    static_ltree[n*2 + 1]/*.Len*/ = 9;
-    n++;
-    bl_count[9]++;
+  return offset + 2
+}
+
+Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 8)
+    this[offset + 1] = value
+  } else {
+    objectWriteUInt16(this, value, offset, false)
   }
-  while (n <= 279) {
-    static_ltree[n*2 + 1]/*.Len*/ = 7;
-    n++;
-    bl_count[7]++;
+  return offset + 2
+}
+
+function objectWriteUInt32 (buf, value, offset, littleEndian) {
+  if (value < 0) value = 0xffffffff + value + 1
+  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
+    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
   }
-  while (n <= 287) {
-    static_ltree[n*2 + 1]/*.Len*/ = 8;
-    n++;
-    bl_count[8]++;
+}
+
+Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset + 3] = (value >>> 24)
+    this[offset + 2] = (value >>> 16)
+    this[offset + 1] = (value >>> 8)
+    this[offset] = value
+  } else {
+    objectWriteUInt32(this, value, offset, true)
   }
-  /* Codes 286 and 287 do not exist, but we must include them in the
-   * tree construction to get a canonical Huffman tree (longest code
-   * all ones)
-   */
-  gen_codes(static_ltree, L_CODES+1, bl_count);
+  return offset + 4
+}
 
-  /* The static distance tree is trivial: */
-  for (n = 0; n < D_CODES; n++) {
-    static_dtree[n*2 + 1]/*.Len*/ = 5;
-    static_dtree[n*2]/*.Code*/ = bi_reverse(n, 5);
+Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 24)
+    this[offset + 1] = (value >>> 16)
+    this[offset + 2] = (value >>> 8)
+    this[offset + 3] = value
+  } else {
+    objectWriteUInt32(this, value, offset, false)
   }
+  return offset + 4
+}
 
-  // Now data ready and we can init static trees
-  static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS);
-  static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0,          D_CODES, MAX_BITS);
-  static_bl_desc =new StaticTreeDesc(new Array(0), extra_blbits, 0,         BL_CODES, MAX_BL_BITS);
+Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) {
+    var limit = Math.pow(2, 8 * byteLength - 1)
 
-  //static_init_done = true;
+    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+  }
+
+  var i = 0
+  var mul = 1
+  var sub = value < 0 ? 1 : 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
+
+  return offset + byteLength
 }
 
+Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) {
+    var limit = Math.pow(2, 8 * byteLength - 1)
 
-/* ===========================================================================
- * Initialize a new block.
- */
-function init_block(s) {
-  var n; /* iterates over tree elements */
+    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+  }
 
-  /* Initialize the trees. */
-  for (n = 0; n < L_CODES;  n++) { s.dyn_ltree[n*2]/*.Freq*/ = 0; }
-  for (n = 0; n < D_CODES;  n++) { s.dyn_dtree[n*2]/*.Freq*/ = 0; }
-  for (n = 0; n < BL_CODES; n++) { s.bl_tree[n*2]/*.Freq*/ = 0; }
+  var i = byteLength - 1
+  var mul = 1
+  var sub = value < 0 ? 1 : 0
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
 
-  s.dyn_ltree[END_BLOCK*2]/*.Freq*/ = 1;
-  s.opt_len = s.static_len = 0;
-  s.last_lit = s.matches = 0;
+  return offset + byteLength
 }
 
+Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
+  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
+  if (value < 0) value = 0xff + value + 1
+  this[offset] = value
+  return offset + 1
+}
 
-/* ===========================================================================
- * Flush the bit buffer and align the output on a byte boundary
- */
-function bi_windup(s)
-{
-  if (s.bi_valid > 8) {
-    put_short(s, s.bi_buf);
-  } else if (s.bi_valid > 0) {
-    //put_byte(s, (Byte)s->bi_buf);
-    s.pending_buf[s.pending++] = s.bi_buf;
+Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = value
+    this[offset + 1] = (value >>> 8)
+  } else {
+    objectWriteUInt16(this, value, offset, true)
   }
-  s.bi_buf = 0;
-  s.bi_valid = 0;
+  return offset + 2
 }
 
-/* ===========================================================================
- * Copy a stored block, storing first the length and its
- * one's complement if requested.
- */
-function copy_block(s, buf, len, header)
-//DeflateState *s;
-//charf    *buf;    /* the input data */
-//unsigned len;     /* its length */
-//int      header;  /* true if block header must be written */
-{
-  bi_windup(s);        /* align on byte boundary */
+Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 8)
+    this[offset + 1] = value
+  } else {
+    objectWriteUInt16(this, value, offset, false)
+  }
+  return offset + 2
+}
 
-  if (header) {
-    put_short(s, len);
-    put_short(s, ~len);
+Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = value
+    this[offset + 1] = (value >>> 8)
+    this[offset + 2] = (value >>> 16)
+    this[offset + 3] = (value >>> 24)
+  } else {
+    objectWriteUInt32(this, value, offset, true)
   }
-//  while (len--) {
-//    put_byte(s, *buf++);
-//  }
-  utils.arraySet(s.pending_buf, s.window, buf, len, s.pending);
-  s.pending += len;
+  return offset + 4
 }
 
-/* ===========================================================================
- * Compares to subtrees, using the tree depth as tie breaker when
- * the subtrees have equal frequency. This minimizes the worst case length.
- */
-function smaller(tree, n, m, depth) {
-  var _n2 = n*2;
-  var _m2 = m*2;
-  return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||
-         (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));
+Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset | 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  if (value < 0) value = 0xffffffff + value + 1
+  if (Buffer.TYPED_ARRAY_SUPPORT) {
+    this[offset] = (value >>> 24)
+    this[offset + 1] = (value >>> 16)
+    this[offset + 2] = (value >>> 8)
+    this[offset + 3] = value
+  } else {
+    objectWriteUInt32(this, value, offset, false)
+  }
+  return offset + 4
 }
 
-/* ===========================================================================
- * Restore the heap property by moving down the tree starting at node k,
- * exchanging a node with the smallest of its two sons if necessary, stopping
- * when the heap property is re-established (each father smaller than its
- * two sons).
- */
-function pqdownheap(s, tree, k)
-//    deflate_state *s;
-//    ct_data *tree;  /* the tree to restore */
-//    int k;               /* node to move down */
-{
-  var v = s.heap[k];
-  var j = k << 1;  /* left son of k */
-  while (j <= s.heap_len) {
-    /* Set j to the smallest of the two sons: */
-    if (j < s.heap_len &&
-      smaller(tree, s.heap[j+1], s.heap[j], s.depth)) {
-      j++;
-    }
-    /* Exit if v is smaller than both sons */
-    if (smaller(tree, v, s.heap[j], s.depth)) { break; }
+function checkIEEE754 (buf, value, offset, ext, max, min) {
+  if (value > max || value < min) throw new RangeError('value is out of bounds')
+  if (offset + ext > buf.length) throw new RangeError('index out of range')
+  if (offset < 0) throw new RangeError('index out of range')
+}
 
-    /* Exchange v with the smallest son */
-    s.heap[k] = s.heap[j];
-    k = j;
+function writeFloat (buf, value, offset, littleEndian, noAssert) {
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
+  }
+  ieee754.write(buf, value, offset, littleEndian, 23, 4)
+  return offset + 4
+}
 
-    /* And continue down the tree, setting j to the left son of k */
-    j <<= 1;
+Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, false, noAssert)
+}
+
+function writeDouble (buf, value, offset, littleEndian, noAssert) {
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
   }
-  s.heap[k] = v;
+  ieee754.write(buf, value, offset, littleEndian, 52, 8)
+  return offset + 8
 }
 
+Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, true, noAssert)
+}
 
-// inlined manually
-// var SMALLEST = 1;
+Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, false, noAssert)
+}
 
-/* ===========================================================================
- * Send the block data compressed using the given Huffman trees
- */
-function compress_block(s, ltree, dtree)
-//    deflate_state *s;
-//    const ct_data *ltree; /* literal tree */
-//    const ct_data *dtree; /* distance tree */
-{
-  var dist;           /* distance of matched string */
-  var lc;             /* match length or unmatched char (if dist == 0) */
-  var lx = 0;         /* running index in l_buf */
-  var code;           /* the code to send */
-  var extra;          /* number of extra bits to send */
+// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+Buffer.prototype.copy = function copy (target, targetStart, start, end) {
+  if (!start) start = 0
+  if (!end && end !== 0) end = this.length
+  if (targetStart >= target.length) targetStart = target.length
+  if (!targetStart) targetStart = 0
+  if (end > 0 && end < start) end = start
 
-  if (s.last_lit !== 0) {
-    do {
-      dist = (s.pending_buf[s.d_buf + lx*2] << 8) | (s.pending_buf[s.d_buf + lx*2 + 1]);
-      lc = s.pending_buf[s.l_buf + lx];
-      lx++;
+  // Copy 0 bytes; we're done
+  if (end === start) return 0
+  if (target.length === 0 || this.length === 0) return 0
 
-      if (dist === 0) {
-        send_code(s, lc, ltree); /* send a literal byte */
-        //Tracecv(isgraph(lc), (stderr," '%c' ", lc));
-      } else {
-        /* Here, lc is the match length - MIN_MATCH */
-        code = _length_code[lc];
-        send_code(s, code+LITERALS+1, ltree); /* send the length code */
-        extra = extra_lbits[code];
-        if (extra !== 0) {
-          lc -= base_length[code];
-          send_bits(s, lc, extra);       /* send the extra length bits */
-        }
-        dist--; /* dist is now the match distance - 1 */
-        code = d_code(dist);
-        //Assert (code < D_CODES, "bad d_code");
+  // Fatal error conditions
+  if (targetStart < 0) {
+    throw new RangeError('targetStart out of bounds')
+  }
+  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
+  if (end < 0) throw new RangeError('sourceEnd out of bounds')
 
-        send_code(s, code, dtree);       /* send the distance code */
-        extra = extra_dbits[code];
-        if (extra !== 0) {
-          dist -= base_dist[code];
-          send_bits(s, dist, extra);   /* send the extra distance bits */
-        }
-      } /* literal or match pair ? */
+  // Are we oob?
+  if (end > this.length) end = this.length
+  if (target.length - targetStart < end - start) {
+    end = target.length - targetStart + start
+  }
 
-      /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
-      //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,
-      //       "pendingBuf overflow");
+  var len = end - start
 
-    } while (lx < s.last_lit);
+  if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
+    for (var i = 0; i < len; i++) {
+      target[i + targetStart] = this[i + start]
+    }
+  } else {
+    target._set(this.subarray(start, start + len), targetStart)
   }
 
-  send_code(s, END_BLOCK, ltree);
+  return len
 }
 
+// fill(value, start=0, end=buffer.length)
+Buffer.prototype.fill = function fill (value, start, end) {
+  if (!value) value = 0
+  if (!start) start = 0
+  if (!end) end = this.length
 
-/* ===========================================================================
- * Construct one Huffman tree and assigns the code bit strings and lengths.
- * Update the total bit length for the current block.
- * IN assertion: the field freq is set for all tree elements.
- * OUT assertions: the fields len and code are set to the optimal bit length
- *     and corresponding code. The length opt_len is updated; static_len is
- *     also updated if stree is not null. The field max_code is set.
- */
-function build_tree(s, desc)
-//    deflate_state *s;
-//    tree_desc *desc; /* the tree descriptor */
-{
-  var tree     = desc.dyn_tree;
-  var stree    = desc.stat_desc.static_tree;
-  var has_stree = desc.stat_desc.has_stree;
-  var elems    = desc.stat_desc.elems;
-  var n, m;          /* iterate over heap elements */
-  var max_code = -1; /* largest code with non zero frequency */
-  var node;          /* new node being created */
+  if (end < start) throw new RangeError('end < start')
 
-  /* Construct the initial heap, with least frequent element in
-   * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
-   * heap[0] is not used.
-   */
-  s.heap_len = 0;
-  s.heap_max = HEAP_SIZE;
+  // Fill 0 bytes; we're done
+  if (end === start) return
+  if (this.length === 0) return
 
-  for (n = 0; n < elems; n++) {
-    if (tree[n * 2]/*.Freq*/ !== 0) {
-      s.heap[++s.heap_len] = max_code = n;
-      s.depth[n] = 0;
+  if (start < 0 || start >= this.length) throw new RangeError('start out of bounds')
+  if (end < 0 || end > this.length) throw new RangeError('end out of bounds')
 
-    } else {
-      tree[n*2 + 1]/*.Len*/ = 0;
+  var i
+  if (typeof value === 'number') {
+    for (i = start; i < end; i++) {
+      this[i] = value
+    }
+  } else {
+    var bytes = utf8ToBytes(value.toString())
+    var len = bytes.length
+    for (i = start; i < end; i++) {
+      this[i] = bytes[i % len]
     }
   }
 
-  /* The pkzip format requires that at least one distance code exists,
-   * and that at least one bit should be sent even if there is only one
-   * possible code. So to avoid special checks later on we force at least
-   * two codes of non zero frequency.
-   */
-  while (s.heap_len < 2) {
-    node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);
-    tree[node * 2]/*.Freq*/ = 1;
-    s.depth[node] = 0;
-    s.opt_len--;
+  return this
+}
 
-    if (has_stree) {
-      s.static_len -= stree[node*2 + 1]/*.Len*/;
+/**
+ * Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
+ * Added in Node 0.12. Only available in browsers that support ArrayBuffer.
+ */
+Buffer.prototype.toArrayBuffer = function toArrayBuffer () {
+  if (typeof Uint8Array !== 'undefined') {
+    if (Buffer.TYPED_ARRAY_SUPPORT) {
+      return (new Buffer(this)).buffer
+    } else {
+      var buf = new Uint8Array(this.length)
+      for (var i = 0, len = buf.length; i < len; i += 1) {
+        buf[i] = this[i]
+      }
+      return buf.buffer
     }
-    /* node is 0 or 1 so it does not have extra bits */
+  } else {
+    throw new TypeError('Buffer.toArrayBuffer not supported in this browser')
   }
-  desc.max_code = max_code;
-
-  /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
-   * establish sub-heaps of increasing lengths:
-   */
-  for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }
-
-  /* Construct the Huffman tree by repeatedly combining the least two
-   * frequent nodes.
-   */
-  node = elems;              /* next internal node of the tree */
-  do {
-    //pqremove(s, tree, n);  /* n = node of least frequency */
-    /*** pqremove ***/
-    n = s.heap[1/*SMALLEST*/];
-    s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];
-    pqdownheap(s, tree, 1/*SMALLEST*/);
-    /***/
-
-    m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */
+}
 
-    s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */
-    s.heap[--s.heap_max] = m;
+// HELPER FUNCTIONS
+// ================
 
-    /* Create a new node father of n and m */
-    tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;
-    s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;
-    tree[n*2 + 1]/*.Dad*/ = tree[m*2 + 1]/*.Dad*/ = node;
+var BP = Buffer.prototype
 
-    /* and insert the new node in the heap */
-    s.heap[1/*SMALLEST*/] = node++;
-    pqdownheap(s, tree, 1/*SMALLEST*/);
+/**
+ * Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
+ */
+Buffer._augment = function _augment (arr) {
+  arr.constructor = Buffer
+  arr._isBuffer = true
+
+  // save reference to original Uint8Array set method before overwriting
+  arr._set = arr.set
+
+  // deprecated, will be removed in node 0.13+
+  arr.get = BP.get
+  arr.set = BP.set
+
+  arr.write = BP.write
+  arr.toString = BP.toString
+  arr.toLocaleString = BP.toString
+  arr.toJSON = BP.toJSON
+  arr.equals = BP.equals
+  arr.compare = BP.compare
+  arr.indexOf = BP.indexOf
+  arr.copy = BP.copy
+  arr.slice = BP.slice
+  arr.readUIntLE = BP.readUIntLE
+  arr.readUIntBE = BP.readUIntBE
+  arr.readUInt8 = BP.readUInt8
+  arr.readUInt16LE = BP.readUInt16LE
+  arr.readUInt16BE = BP.readUInt16BE
+  arr.readUInt32LE = BP.readUInt32LE
+  arr.readUInt32BE = BP.readUInt32BE
+  arr.readIntLE = BP.readIntLE
+  arr.readIntBE = BP.readIntBE
+  arr.readInt8 = BP.readInt8
+  arr.readInt16LE = BP.readInt16LE
+  arr.readInt16BE = BP.readInt16BE
+  arr.readInt32LE = BP.readInt32LE
+  arr.readInt32BE = BP.readInt32BE
+  arr.readFloatLE = BP.readFloatLE
+  arr.readFloatBE = BP.readFloatBE
+  arr.readDoubleLE = BP.readDoubleLE
+  arr.readDoubleBE = BP.readDoubleBE
+  arr.writeUInt8 = BP.writeUInt8
+  arr.writeUIntLE = BP.writeUIntLE
+  arr.writeUIntBE = BP.writeUIntBE
+  arr.writeUInt16LE = BP.writeUInt16LE
+  arr.writeUInt16BE = BP.writeUInt16BE
+  arr.writeUInt32LE = BP.writeUInt32LE
+  arr.writeUInt32BE = BP.writeUInt32BE
+  arr.writeIntLE = BP.writeIntLE
+  arr.writeIntBE = BP.writeIntBE
+  arr.writeInt8 = BP.writeInt8
+  arr.writeInt16LE = BP.writeInt16LE
+  arr.writeInt16BE = BP.writeInt16BE
+  arr.writeInt32LE = BP.writeInt32LE
+  arr.writeInt32BE = BP.writeInt32BE
+  arr.writeFloatLE = BP.writeFloatLE
+  arr.writeFloatBE = BP.writeFloatBE
+  arr.writeDoubleLE = BP.writeDoubleLE
+  arr.writeDoubleBE = BP.writeDoubleBE
+  arr.fill = BP.fill
+  arr.inspect = BP.inspect
+  arr.toArrayBuffer = BP.toArrayBuffer
+
+  return arr
+}
 
-  } while (s.heap_len >= 2);
+var INVALID_BASE64_RE = /[^+\/0-9A-z\-]/g
 
-  s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];
+function base64clean (str) {
+  // Node strips out invalid characters like \n and \t from the string, base64-js does not
+  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
+  // Node converts strings with length < 2 to ''
+  if (str.length < 2) return ''
+  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+  while (str.length % 4 !== 0) {
+    str = str + '='
+  }
+  return str
+}
 
-  /* At this point, the fields freq and dad are set. We can now
-   * generate the bit lengths.
-   */
-  gen_bitlen(s, desc);
+function stringtrim (str) {
+  if (str.trim) return str.trim()
+  return str.replace(/^\s+|\s+$/g, '')
+}
 
-  /* The field len is now set, we can generate the bit codes */
-  gen_codes(tree, max_code, s.bl_count);
+function toHex (n) {
+  if (n < 16) return '0' + n.toString(16)
+  return n.toString(16)
 }
 
+function utf8ToBytes (string, units) {
+  units = units || Infinity
+  var codePoint
+  var length = string.length
+  var leadSurrogate = null
+  var bytes = []
+  var i = 0
+
+  for (; i < length; i++) {
+    codePoint = string.charCodeAt(i)
+
+    // is surrogate component
+    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+      // last char was a lead
+      if (leadSurrogate) {
+        // 2 leads in a row
+        if (codePoint < 0xDC00) {
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          leadSurrogate = codePoint
+          continue
+        } else {
+          // valid surrogate pair
+          codePoint = leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00 | 0x10000
+          leadSurrogate = null
+        }
+      } else {
+        // no lead yet
+
+        if (codePoint > 0xDBFF) {
+          // unexpected trail
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        } else if (i + 1 === length) {
+          // unpaired lead
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        } else {
+          // valid lead
+          leadSurrogate = codePoint
+          continue
+        }
+      }
+    } else if (leadSurrogate) {
+      // valid bmp char, but last char was a lead
+      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+      leadSurrogate = null
+    }
 
-/* ===========================================================================
- * Scan a literal or distance tree to determine the frequencies of the codes
- * in the bit length tree.
- */
-function scan_tree(s, tree, max_code)
-//    deflate_state *s;
-//    ct_data *tree;   /* the tree to be scanned */
-//    int max_code;    /* and its largest code of non zero frequency */
-{
-  var n;                     /* iterates over all tree elements */
-  var prevlen = -1;          /* last emitted length */
-  var curlen;                /* length of current code */
+    // encode utf8
+    if (codePoint < 0x80) {
+      if ((units -= 1) < 0) break
+      bytes.push(codePoint)
+    } else if (codePoint < 0x800) {
+      if ((units -= 2) < 0) break
+      bytes.push(
+        codePoint >> 0x6 | 0xC0,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x10000) {
+      if ((units -= 3) < 0) break
+      bytes.push(
+        codePoint >> 0xC | 0xE0,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x200000) {
+      if ((units -= 4) < 0) break
+      bytes.push(
+        codePoint >> 0x12 | 0xF0,
+        codePoint >> 0xC & 0x3F | 0x80,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else {
+      throw new Error('Invalid code point')
+    }
+  }
 
-  var nextlen = tree[0*2 + 1]/*.Len*/; /* length of next code */
+  return bytes
+}
 
-  var count = 0;             /* repeat count of the current code */
-  var max_count = 7;         /* max repeat count */
-  var min_count = 4;         /* min repeat count */
+function asciiToBytes (str) {
+  var byteArray = []
+  for (var i = 0; i < str.length; i++) {
+    // Node's code seems to be doing this and not & 0x7F..
+    byteArray.push(str.charCodeAt(i) & 0xFF)
+  }
+  return byteArray
+}
 
-  if (nextlen === 0) {
-    max_count = 138;
-    min_count = 3;
+function utf16leToBytes (str, units) {
+  var c, hi, lo
+  var byteArray = []
+  for (var i = 0; i < str.length; i++) {
+    if ((units -= 2) < 0) break
+
+    c = str.charCodeAt(i)
+    hi = c >> 8
+    lo = c % 256
+    byteArray.push(lo)
+    byteArray.push(hi)
   }
-  tree[(max_code+1)*2 + 1]/*.Len*/ = 0xffff; /* guard */
 
-  for (n = 0; n <= max_code; n++) {
-    curlen = nextlen;
-    nextlen = tree[(n+1)*2 + 1]/*.Len*/;
+  return byteArray
+}
 
-    if (++count < max_count && curlen === nextlen) {
-      continue;
+function base64ToBytes (str) {
+  return base64.toByteArray(base64clean(str))
+}
 
-    } else if (count < min_count) {
-      s.bl_tree[curlen * 2]/*.Freq*/ += count;
+function blitBuffer (src, dst, offset, length) {
+  for (var i = 0; i < length; i++) {
+    if ((i + offset >= dst.length) || (i >= src.length)) break
+    dst[i + offset] = src[i]
+  }
+  return i
+}
 
-    } else if (curlen !== 0) {
+function decodeUtf8Char (str) {
+  try {
+    return decodeURIComponent(str)
+  } catch (err) {
+    return String.fromCharCode(0xFFFD) // UTF 8 invalid char
+  }
+}
 
-      if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }
-      s.bl_tree[REP_3_6*2]/*.Freq*/++;
+},{"base64-js":35,"ieee754":36,"is-array":37}],35:[function(require,module,exports){
+var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
+
+;(function (exports) {
+	'use strict';
+
+  var Arr = (typeof Uint8Array !== 'undefined')
+    ? Uint8Array
+    : Array
+
+	var PLUS   = '+'.charCodeAt(0)
+	var SLASH  = '/'.charCodeAt(0)
+	var NUMBER = '0'.charCodeAt(0)
+	var LOWER  = 'a'.charCodeAt(0)
+	var UPPER  = 'A'.charCodeAt(0)
+	var PLUS_URL_SAFE = '-'.charCodeAt(0)
+	var SLASH_URL_SAFE = '_'.charCodeAt(0)
+
+	function decode (elt) {
+		var code = elt.charCodeAt(0)
+		if (code === PLUS ||
+		    code === PLUS_URL_SAFE)
+			return 62 // '+'
+		if (code === SLASH ||
+		    code === SLASH_URL_SAFE)
+			return 63 // '/'
+		if (code < NUMBER)
+			return -1 //no match
+		if (code < NUMBER + 10)
+			return code - NUMBER + 26 + 26
+		if (code < UPPER + 26)
+			return code - UPPER
+		if (code < LOWER + 26)
+			return code - LOWER + 26
+	}
 
-    } else if (count <= 10) {
-      s.bl_tree[REPZ_3_10*2]/*.Freq*/++;
+	function b64ToByteArray (b64) {
+		var i, j, l, tmp, placeHolders, arr
 
-    } else {
-      s.bl_tree[REPZ_11_138*2]/*.Freq*/++;
-    }
+		if (b64.length % 4 > 0) {
+			throw new Error('Invalid string. Length must be a multiple of 4')
+		}
 
-    count = 0;
-    prevlen = curlen;
+		// the number of equal signs (place holders)
+		// if there are two placeholders, than the two characters before it
+		// represent one byte
+		// if there is only one, then the three characters before it represent 2 bytes
+		// this is just a cheap hack to not do indexOf twice
+		var len = b64.length
+		placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0
 
-    if (nextlen === 0) {
-      max_count = 138;
-      min_count = 3;
+		// base64 is 4/3 + up to two characters of the original data
+		arr = new Arr(b64.length * 3 / 4 - placeHolders)
 
-    } else if (curlen === nextlen) {
-      max_count = 6;
-      min_count = 3;
+		// if there are placeholders, only get up to the last complete 4 chars
+		l = placeHolders > 0 ? b64.length - 4 : b64.length
 
-    } else {
-      max_count = 7;
-      min_count = 4;
-    }
-  }
-}
+		var L = 0
 
+		function push (v) {
+			arr[L++] = v
+		}
 
-/* ===========================================================================
- * Send a literal or distance tree in compressed form, using the codes in
- * bl_tree.
- */
-function send_tree(s, tree, max_code)
-//    deflate_state *s;
-//    ct_data *tree; /* the tree to be scanned */
-//    int max_code;       /* and its largest code of non zero frequency */
-{
-  var n;                     /* iterates over all tree elements */
-  var prevlen = -1;          /* last emitted length */
-  var curlen;                /* length of current code */
+		for (i = 0, j = 0; i < l; i += 4, j += 3) {
+			tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
+			push((tmp & 0xFF0000) >> 16)
+			push((tmp & 0xFF00) >> 8)
+			push(tmp & 0xFF)
+		}
 
-  var nextlen = tree[0*2 + 1]/*.Len*/; /* length of next code */
+		if (placeHolders === 2) {
+			tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
+			push(tmp & 0xFF)
+		} else if (placeHolders === 1) {
+			tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
+			push((tmp >> 8) & 0xFF)
+			push(tmp & 0xFF)
+		}
 
-  var count = 0;             /* repeat count of the current code */
-  var max_count = 7;         /* max repeat count */
-  var min_count = 4;         /* min repeat count */
+		return arr
+	}
 
-  /* tree[max_code+1].Len = -1; */  /* guard already set */
-  if (nextlen === 0) {
-    max_count = 138;
-    min_count = 3;
-  }
+	function uint8ToBase64 (uint8) {
+		var i,
+			extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
+			output = "",
+			temp, length
 
-  for (n = 0; n <= max_code; n++) {
-    curlen = nextlen;
-    nextlen = tree[(n+1)*2 + 1]/*.Len*/;
+		function encode (num) {
+			return lookup.charAt(num)
+		}
 
-    if (++count < max_count && curlen === nextlen) {
-      continue;
+		function tripletToBase64 (num) {
+			return encode(num >> 18 & 0x3F) + encode(num >> 12 & 0x3F) + encode(num >> 6 & 0x3F) + encode(num & 0x3F)
+		}
 
-    } else if (count < min_count) {
-      do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);
+		// go through the array every three bytes, we'll deal with trailing stuff later
+		for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
+			temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
+			output += tripletToBase64(temp)
+		}
 
-    } else if (curlen !== 0) {
-      if (curlen !== prevlen) {
-        send_code(s, curlen, s.bl_tree);
-        count--;
-      }
-      //Assert(count >= 3 && count <= 6, " 3_6?");
-      send_code(s, REP_3_6, s.bl_tree);
-      send_bits(s, count-3, 2);
+		// pad the end with zeros, but make sure to not forget the extra bytes
+		switch (extraBytes) {
+			case 1:
+				temp = uint8[uint8.length - 1]
+				output += encode(temp >> 2)
+				output += encode((temp << 4) & 0x3F)
+				output += '=='
+				break
+			case 2:
+				temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
+				output += encode(temp >> 10)
+				output += encode((temp >> 4) & 0x3F)
+				output += encode((temp << 2) & 0x3F)
+				output += '='
+				break
+		}
 
-    } else if (count <= 10) {
-      send_code(s, REPZ_3_10, s.bl_tree);
-      send_bits(s, count-3, 3);
+		return output
+	}
 
+	exports.toByteArray = b64ToByteArray
+	exports.fromByteArray = uint8ToBase64
+}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))
+
+},{}],36:[function(require,module,exports){
+exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+  var e, m
+  var eLen = nBytes * 8 - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var nBits = -7
+  var i = isLE ? (nBytes - 1) : 0
+  var d = isLE ? -1 : 1
+  var s = buffer[offset + i]
+
+  i += d
+
+  e = s & ((1 << (-nBits)) - 1)
+  s >>= (-nBits)
+  nBits += eLen
+  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+
+  m = e & ((1 << (-nBits)) - 1)
+  e >>= (-nBits)
+  nBits += mLen
+  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+
+  if (e === 0) {
+    e = 1 - eBias
+  } else if (e === eMax) {
+    return m ? NaN : ((s ? -1 : 1) * Infinity)
+  } else {
+    m = m + Math.pow(2, mLen)
+    e = e - eBias
+  }
+  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+}
+
+exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+  var e, m, c
+  var eLen = nBytes * 8 - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+  var i = isLE ? 0 : (nBytes - 1)
+  var d = isLE ? 1 : -1
+  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+
+  value = Math.abs(value)
+
+  if (isNaN(value) || value === Infinity) {
+    m = isNaN(value) ? 1 : 0
+    e = eMax
+  } else {
+    e = Math.floor(Math.log(value) / Math.LN2)
+    if (value * (c = Math.pow(2, -e)) < 1) {
+      e--
+      c *= 2
+    }
+    if (e + eBias >= 1) {
+      value += rt / c
     } else {
-      send_code(s, REPZ_11_138, s.bl_tree);
-      send_bits(s, count-11, 7);
+      value += rt * Math.pow(2, 1 - eBias)
+    }
+    if (value * c >= 2) {
+      e++
+      c /= 2
     }
 
-    count = 0;
-    prevlen = curlen;
-    if (nextlen === 0) {
-      max_count = 138;
-      min_count = 3;
-
-    } else if (curlen === nextlen) {
-      max_count = 6;
-      min_count = 3;
-
+    if (e + eBias >= eMax) {
+      m = 0
+      e = eMax
+    } else if (e + eBias >= 1) {
+      m = (value * c - 1) * Math.pow(2, mLen)
+      e = e + eBias
     } else {
-      max_count = 7;
-      min_count = 4;
+      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+      e = 0
     }
   }
-}
 
+  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
 
-/* ===========================================================================
- * Construct the Huffman tree for the bit lengths and return the index in
- * bl_order of the last bit length code to send.
- */
-function build_bl_tree(s) {
-  var max_blindex;  /* index of last bit length code of non zero freq */
+  e = (e << mLen) | m
+  eLen += mLen
+  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
 
-  /* Determine the bit length frequencies for literal and distance trees */
-  scan_tree(s, s.dyn_ltree, s.l_desc.max_code);
-  scan_tree(s, s.dyn_dtree, s.d_desc.max_code);
+  buffer[offset + i - d] |= s * 128
+}
 
-  /* Build the bit length tree: */
-  build_tree(s, s.bl_desc);
-  /* opt_len now includes the length of the tree representations, except
-   * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
-   */
+},{}],37:[function(require,module,exports){
 
-  /* Determine the number of bit length codes to send. The pkzip format
-   * requires that at least 4 bit length codes be sent. (appnote.txt says
-   * 3 but the actual value used is 4.)
-   */
-  for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {
-    if (s.bl_tree[bl_order[max_blindex]*2 + 1]/*.Len*/ !== 0) {
-      break;
-    }
-  }
-  /* Update opt_len to include the bit length tree and counts */
-  s.opt_len += 3*(max_blindex+1) + 5+5+4;
-  //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
-  //        s->opt_len, s->static_len));
+/**
+ * isArray
+ */
 
-  return max_blindex;
-}
+var isArray = Array.isArray;
+
+/**
+ * toString
+ */
 
+var str = Object.prototype.toString;
 
-/* ===========================================================================
- * Send the header for a block using dynamic Huffman trees: the counts, the
- * lengths of the bit length codes, the literal tree and the distance tree.
- * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
+/**
+ * Whether or not the given `val`
+ * is an array.
+ *
+ * example:
+ *
+ *        isArray([]);
+ *        // > true
+ *        isArray(arguments);
+ *        // > false
+ *        isArray('');
+ *        // > false
+ *
+ * @param {mixed} val
+ * @return {bool}
  */
-function send_all_trees(s, lcodes, dcodes, blcodes)
-//    deflate_state *s;
-//    int lcodes, dcodes, blcodes; /* number of codes for each tree */
-{
-  var rank;                    /* index in bl_order */
 
-  //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
-  //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
-  //        "too many codes");
-  //Tracev((stderr, "\nbl counts: "));
-  send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */
-  send_bits(s, dcodes-1,   5);
-  send_bits(s, blcodes-4,  4); /* not -3 as stated in appnote.txt */
-  for (rank = 0; rank < blcodes; rank++) {
-    //Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
-    send_bits(s, s.bl_tree[bl_order[rank]*2 + 1]/*.Len*/, 3);
+module.exports = isArray || function (val) {
+  return !! val && '[object Array]' == str.call(val);
+};
+
+},{}],38:[function(require,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
   }
-  //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
+}
 
-  send_tree(s, s.dyn_ltree, lcodes-1); /* literal tree */
-  //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
+},{}],39:[function(require,module,exports){
+// shim for using process in browser
 
-  send_tree(s, s.dyn_dtree, dcodes-1); /* distance tree */
-  //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
+var process = module.exports = {};
+var queue = [];
+var draining = false;
+var currentQueue;
+var queueIndex = -1;
+
+function cleanUpNextTick() {
+    draining = false;
+    if (currentQueue.length) {
+        queue = currentQueue.concat(queue);
+    } else {
+        queueIndex = -1;
+    }
+    if (queue.length) {
+        drainQueue();
+    }
 }
 
+function drainQueue() {
+    if (draining) {
+        return;
+    }
+    var timeout = setTimeout(cleanUpNextTick);
+    draining = true;
+
+    var len = queue.length;
+    while(len) {
+        currentQueue = queue;
+        queue = [];
+        while (++queueIndex < len) {
+            currentQueue[queueIndex].run();
+        }
+        queueIndex = -1;
+        len = queue.length;
+    }
+    currentQueue = null;
+    draining = false;
+    clearTimeout(timeout);
+}
 
-/* ===========================================================================
- * Check if the data type is TEXT or BINARY, using the following algorithm:
- * - TEXT if the two conditions below are satisfied:
- *    a) There are no non-portable control characters belonging to the
- *       "black list" (0..6, 14..25, 28..31).
- *    b) There is at least one printable character belonging to the
- *       "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
- * - BINARY otherwise.
- * - The following partially-portable control characters form a
- *   "gray list" that is ignored in this detection algorithm:
- *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
- * IN assertion: the fields Freq of dyn_ltree are set.
- */
-function detect_data_type(s) {
-  /* black_mask is the bit mask of black-listed bytes
-   * set bits 0..6, 14..25, and 28..31
-   * 0xf3ffc07f = binary 11110011111111111100000001111111
-   */
-  var black_mask = 0xf3ffc07f;
-  var n;
+process.nextTick = function (fun) {
+    var args = new Array(arguments.length - 1);
+    if (arguments.length > 1) {
+        for (var i = 1; i < arguments.length; i++) {
+            args[i - 1] = arguments[i];
+        }
+    }
+    queue.push(new Item(fun, args));
+    if (queue.length === 1 && !draining) {
+        setTimeout(drainQueue, 0);
+    }
+};
 
-  /* Check for non-textual ("black-listed") bytes. */
-  for (n = 0; n <= 31; n++, black_mask >>>= 1) {
-    if ((black_mask & 1) && (s.dyn_ltree[n*2]/*.Freq*/ !== 0)) {
-      return Z_BINARY;
+// v8 likes predictible objects
+function Item(fun, array) {
+    this.fun = fun;
+    this.array = array;
+}
+Item.prototype.run = function () {
+    this.fun.apply(null, this.array);
+};
+process.title = 'browser';
+process.browser = true;
+process.env = {};
+process.argv = [];
+process.version = ''; // empty string to avoid regexp issues
+process.versions = {};
+
+function noop() {}
+
+process.on = noop;
+process.addListener = noop;
+process.once = noop;
+process.off = noop;
+process.removeListener = noop;
+process.removeAllListeners = noop;
+process.emit = noop;
+
+process.binding = function (name) {
+    throw new Error('process.binding is not supported');
+};
+
+// TODO(shtylman)
+process.cwd = function () { return '/' };
+process.chdir = function (dir) {
+    throw new Error('process.chdir is not supported');
+};
+process.umask = function() { return 0; };
+
+},{}],40:[function(require,module,exports){
+module.exports = function isBuffer(arg) {
+  return arg && typeof arg === 'object'
+    && typeof arg.copy === 'function'
+    && typeof arg.fill === 'function'
+    && typeof arg.readUInt8 === 'function';
+}
+},{}],41:[function(require,module,exports){
+(function (process,global){
+// 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 formatRegExp = /%[sdj%]/g;
+exports.format = function(f) {
+  if (!isString(f)) {
+    var objects = [];
+    for (var i = 0; i < arguments.length; i++) {
+      objects.push(inspect(arguments[i]));
+    }
+    return objects.join(' ');
+  }
+
+  var i = 1;
+  var args = arguments;
+  var len = args.length;
+  var str = String(f).replace(formatRegExp, function(x) {
+    if (x === '%%') return '%';
+    if (i >= len) return x;
+    switch (x) {
+      case '%s': return String(args[i++]);
+      case '%d': return Number(args[i++]);
+      case '%j':
+        try {
+          return JSON.stringify(args[i++]);
+        } catch (_) {
+          return '[Circular]';
+        }
+      default:
+        return x;
+    }
+  });
+  for (var x = args[i]; i < len; x = args[++i]) {
+    if (isNull(x) || !isObject(x)) {
+      str += ' ' + x;
+    } else {
+      str += ' ' + inspect(x);
     }
   }
+  return str;
+};
 
-  /* Check for textual ("white-listed") bytes. */
-  if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||
-      s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {
-    return Z_TEXT;
+
+// Mark that a method should not be used.
+// Returns a modified function which warns once by default.
+// If --no-deprecation is set, then it is a no-op.
+exports.deprecate = function(fn, msg) {
+  // Allow for deprecating things in the process of starting up.
+  if (isUndefined(global.process)) {
+    return function() {
+      return exports.deprecate(fn, msg).apply(this, arguments);
+    };
   }
-  for (n = 32; n < LITERALS; n++) {
-    if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {
-      return Z_TEXT;
+
+  if (process.noDeprecation === true) {
+    return fn;
+  }
+
+  var warned = false;
+  function deprecated() {
+    if (!warned) {
+      if (process.throwDeprecation) {
+        throw new Error(msg);
+      } else if (process.traceDeprecation) {
+        console.trace(msg);
+      } else {
+        console.error(msg);
+      }
+      warned = true;
     }
+    return fn.apply(this, arguments);
   }
 
-  /* There are no "black-listed" or "white-listed" bytes:
-   * this stream either is empty or has tolerated ("gray-listed") bytes only.
-   */
-  return Z_BINARY;
-}
+  return deprecated;
+};
 
 
-var static_init_done = false;
+var debugs = {};
+var debugEnviron;
+exports.debuglog = function(set) {
+  if (isUndefined(debugEnviron))
+    debugEnviron = process.env.NODE_DEBUG || '';
+  set = set.toUpperCase();
+  if (!debugs[set]) {
+    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
+      var pid = process.pid;
+      debugs[set] = function() {
+        var msg = exports.format.apply(exports, arguments);
+        console.error('%s %d: %s', set, pid, msg);
+      };
+    } else {
+      debugs[set] = function() {};
+    }
+  }
+  return debugs[set];
+};
 
-/* ===========================================================================
- * Initialize the tree data structures for a new zlib stream.
+
+/**
+ * Echos the value of a value. Trys to print the value out
+ * in the best way possible given the different types.
+ *
+ * @param {Object} obj The object to print out.
+ * @param {Object} opts Optional options object that alters the output.
  */
-function _tr_init(s)
-{
+/* legacy: obj, showHidden, depth, colors*/
+function inspect(obj, opts) {
+  // default options
+  var ctx = {
+    seen: [],
+    stylize: stylizeNoColor
+  };
+  // legacy...
+  if (arguments.length >= 3) ctx.depth = arguments[2];
+  if (arguments.length >= 4) ctx.colors = arguments[3];
+  if (isBoolean(opts)) {
+    // legacy...
+    ctx.showHidden = opts;
+  } else if (opts) {
+    // got an "options" object
+    exports._extend(ctx, opts);
+  }
+  // set default options
+  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
+  if (isUndefined(ctx.depth)) ctx.depth = 2;
+  if (isUndefined(ctx.colors)) ctx.colors = false;
+  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
+  if (ctx.colors) ctx.stylize = stylizeWithColor;
+  return formatValue(ctx, obj, ctx.depth);
+}
+exports.inspect = inspect;
+
+
+// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
+inspect.colors = {
+  'bold' : [1, 22],
+  'italic' : [3, 23],
+  'underline' : [4, 24],
+  'inverse' : [7, 27],
+  'white' : [37, 39],
+  'grey' : [90, 39],
+  'black' : [30, 39],
+  'blue' : [34, 39],
+  'cyan' : [36, 39],
+  'green' : [32, 39],
+  'magenta' : [35, 39],
+  'red' : [31, 39],
+  'yellow' : [33, 39]
+};
 
-  if (!static_init_done) {
-    tr_static_init();
-    static_init_done = true;
-  }
+// Don't use 'blue' not visible on cmd.exe
+inspect.styles = {
+  'special': 'cyan',
+  'number': 'yellow',
+  'boolean': 'yellow',
+  'undefined': 'grey',
+  'null': 'bold',
+  'string': 'green',
+  'date': 'magenta',
+  // "name": intentionally not styling
+  'regexp': 'red'
+};
 
-  s.l_desc  = new TreeDesc(s.dyn_ltree, static_l_desc);
-  s.d_desc  = new TreeDesc(s.dyn_dtree, static_d_desc);
-  s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);
 
-  s.bi_buf = 0;
-  s.bi_valid = 0;
+function stylizeWithColor(str, styleType) {
+  var style = inspect.styles[styleType];
 
-  /* Initialize the first block of the first file: */
-  init_block(s);
+  if (style) {
+    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
+           '\u001b[' + inspect.colors[style][1] + 'm';
+  } else {
+    return str;
+  }
 }
 
 
-/* ===========================================================================
- * Send a stored block
- */
-function _tr_stored_block(s, buf, stored_len, last)
-//DeflateState *s;
-//charf *buf;       /* input block */
-//ulg stored_len;   /* length of input block */
-//int last;         /* one if this is the last block for a file */
-{
-  send_bits(s, (STORED_BLOCK<<1)+(last ? 1 : 0), 3);    /* send block type */
-  copy_block(s, buf, stored_len, true); /* with header */
+function stylizeNoColor(str, styleType) {
+  return str;
 }
 
 
-/* ===========================================================================
- * Send one empty static block to give enough lookahead for inflate.
- * This takes 10 bits, of which 7 may remain in the bit buffer.
- */
-function _tr_align(s) {
-  send_bits(s, STATIC_TREES<<1, 3);
-  send_code(s, END_BLOCK, static_ltree);
-  bi_flush(s);
-}
+function arrayToHash(array) {
+  var hash = {};
 
+  array.forEach(function(val, idx) {
+    hash[val] = true;
+  });
 
-/* ===========================================================================
- * Determine the best encoding for the current block: dynamic trees, static
- * trees or store, and output the encoded block to the zip file.
- */
-function _tr_flush_block(s, buf, stored_len, last)
-//DeflateState *s;
-//charf *buf;       /* input block, or NULL if too old */
-//ulg stored_len;   /* length of input block */
-//int last;         /* one if this is the last block for a file */
-{
-  var opt_lenb, static_lenb;  /* opt_len and static_len in bytes */
-  var max_blindex = 0;        /* index of last bit length code of non zero freq */
+  return hash;
+}
 
-  /* Build the Huffman trees unless a stored block is forced */
-  if (s.level > 0) {
 
-    /* Check if the file is binary or text */
-    if (s.strm.data_type === Z_UNKNOWN) {
-      s.strm.data_type = detect_data_type(s);
+function formatValue(ctx, value, recurseTimes) {
+  // Provide a hook for user-specified inspect functions.
+  // Check that value is an object with an inspect function on it
+  if (ctx.customInspect &&
+      value &&
+      isFunction(value.inspect) &&
+      // Filter out the util module, it's inspect function is special
+      value.inspect !== exports.inspect &&
+      // Also filter out any prototype objects using the circular check.
+      !(value.constructor && value.constructor.prototype === value)) {
+    var ret = value.inspect(recurseTimes, ctx);
+    if (!isString(ret)) {
+      ret = formatValue(ctx, ret, recurseTimes);
     }
+    return ret;
+  }
 
-    /* Construct the literal and distance trees */
-    build_tree(s, s.l_desc);
-    // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
-    //        s->static_len));
-
-    build_tree(s, s.d_desc);
-    // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
-    //        s->static_len));
-    /* At this point, opt_len and static_len are the total bit lengths of
-     * the compressed block data, excluding the tree representations.
-     */
-
-    /* Build the bit length tree for the above two trees, and get the index
-     * in bl_order of the last bit length code to send.
-     */
-    max_blindex = build_bl_tree(s);
+  // Primitive types cannot have properties
+  var primitive = formatPrimitive(ctx, value);
+  if (primitive) {
+    return primitive;
+  }
 
-    /* Determine the best encoding. Compute the block lengths in bytes. */
-    opt_lenb = (s.opt_len+3+7) >>> 3;
-    static_lenb = (s.static_len+3+7) >>> 3;
+  // Look up the keys of the object.
+  var keys = Object.keys(value);
+  var visibleKeys = arrayToHash(keys);
 
-    // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
-    //        opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
-    //        s->last_lit));
+  if (ctx.showHidden) {
+    keys = Object.getOwnPropertyNames(value);
+  }
 
-    if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }
+  // IE doesn't make error fields non-enumerable
+  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
+  if (isError(value)
+      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
+    return formatError(value);
+  }
 
-  } else {
-    // Assert(buf != (char*)0, "lost buf");
-    opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
+  // Some type of object without properties can be shortcutted.
+  if (keys.length === 0) {
+    if (isFunction(value)) {
+      var name = value.name ? ': ' + value.name : '';
+      return ctx.stylize('[Function' + name + ']', 'special');
+    }
+    if (isRegExp(value)) {
+      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
+    }
+    if (isDate(value)) {
+      return ctx.stylize(Date.prototype.toString.call(value), 'date');
+    }
+    if (isError(value)) {
+      return formatError(value);
+    }
   }
 
-  if ((stored_len+4 <= opt_lenb) && (buf !== -1)) {
-    /* 4: two words for the lengths */
+  var base = '', array = false, braces = ['{', '}'];
 
-    /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
-     * Otherwise we can't have processed more than WSIZE input bytes since
-     * the last block flush, because compression would have been
-     * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
-     * transform a block into a stored block.
-     */
-    _tr_stored_block(s, buf, stored_len, last);
+  // Make Array say that they are Array
+  if (isArray(value)) {
+    array = true;
+    braces = ['[', ']'];
+  }
 
-  } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) {
+  // Make functions say that they are functions
+  if (isFunction(value)) {
+    var n = value.name ? ': ' + value.name : '';
+    base = ' [Function' + n + ']';
+  }
 
-    send_bits(s, (STATIC_TREES<<1) + (last ? 1 : 0), 3);
-    compress_block(s, static_ltree, static_dtree);
+  // Make RegExps say that they are RegExps
+  if (isRegExp(value)) {
+    base = ' ' + RegExp.prototype.toString.call(value);
+  }
 
-  } else {
-    send_bits(s, (DYN_TREES<<1) + (last ? 1 : 0), 3);
-    send_all_trees(s, s.l_desc.max_code+1, s.d_desc.max_code+1, max_blindex+1);
-    compress_block(s, s.dyn_ltree, s.dyn_dtree);
+  // Make dates with properties first say the date
+  if (isDate(value)) {
+    base = ' ' + Date.prototype.toUTCString.call(value);
   }
-  // Assert (s->compressed_len == s->bits_sent, "bad compressed size");
-  /* The above check is made mod 2^32, for files larger than 512 MB
-   * and uLong implemented on 32 bits.
-   */
-  init_block(s);
 
-  if (last) {
-    bi_windup(s);
+  // Make error with message first say the error
+  if (isError(value)) {
+    base = ' ' + formatError(value);
   }
-  // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
-  //       s->compressed_len-7*last));
-}
 
-/* ===========================================================================
- * Save the match info and tally the frequency counts. Return true if
- * the current block must be flushed.
- */
-function _tr_tally(s, dist, lc)
-//    deflate_state *s;
-//    unsigned dist;  /* distance of matched string */
-//    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */
-{
-  //var out_length, in_length, dcode;
+  if (keys.length === 0 && (!array || value.length == 0)) {
+    return braces[0] + base + braces[1];
+  }
 
-  s.pending_buf[s.d_buf + s.last_lit * 2]     = (dist >>> 8) & 0xff;
-  s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff;
+  if (recurseTimes < 0) {
+    if (isRegExp(value)) {
+      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
+    } else {
+      return ctx.stylize('[Object]', 'special');
+    }
+  }
 
-  s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff;
-  s.last_lit++;
+  ctx.seen.push(value);
 
-  if (dist === 0) {
-    /* lc is the unmatched char */
-    s.dyn_ltree[lc*2]/*.Freq*/++;
+  var output;
+  if (array) {
+    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
   } else {
-    s.matches++;
-    /* Here, lc is the match length - MIN_MATCH */
-    dist--;             /* dist = match distance - 1 */
-    //Assert((ush)dist < (ush)MAX_DIST(s) &&
-    //       (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
-    //       (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");
-
-    s.dyn_ltree[(_length_code[lc]+LITERALS+1) * 2]/*.Freq*/++;
-    s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;
+    output = keys.map(function(key) {
+      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
+    });
   }
 
-// (!) This block is disabled in zlib defailts,
-// don't enable it for binary compatibility
+  ctx.seen.pop();
 
-//#ifdef TRUNCATE_BLOCK
-//  /* Try to guess if it is profitable to stop the current block here */
-//  if ((s.last_lit & 0x1fff) === 0 && s.level > 2) {
-//    /* Compute an upper bound for the compressed length */
-//    out_length = s.last_lit*8;
-//    in_length = s.strstart - s.block_start;
-//
-//    for (dcode = 0; dcode < D_CODES; dcode++) {
-//      out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]);
-//    }
-//    out_length >>>= 3;
-//    //Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",
-//    //       s->last_lit, in_length, out_length,
-//    //       100L - out_length*100L/in_length));
-//    if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) {
-//      return true;
-//    }
-//  }
-//#endif
+  return reduceToSingleString(output, base, braces);
+}
 
-  return (s.last_lit === s.lit_bufsize-1);
-  /* We avoid equality with lit_bufsize because of wraparound at 64K
-   * on 16 bit machines and because stored blocks are restricted to
-   * 64K-1 bytes.
-   */
+
+function formatPrimitive(ctx, value) {
+  if (isUndefined(value))
+    return ctx.stylize('undefined', 'undefined');
+  if (isString(value)) {
+    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
+                                             .replace(/'/g, "\\'")
+                                             .replace(/\\"/g, '"') + '\'';
+    return ctx.stylize(simple, 'string');
+  }
+  if (isNumber(value))
+    return ctx.stylize('' + value, 'number');
+  if (isBoolean(value))
+    return ctx.stylize('' + value, 'boolean');
+  // For some reason typeof null is "object", so special case here.
+  if (isNull(value))
+    return ctx.stylize('null', 'null');
 }
 
-exports._tr_init  = _tr_init;
-exports._tr_stored_block = _tr_stored_block;
-exports._tr_flush_block  = _tr_flush_block;
-exports._tr_tally = _tr_tally;
-exports._tr_align = _tr_align;
 
-},{"../utils/common":4}],16:[function(require,module,exports){
-'use strict';
+function formatError(value) {
+  return '[' + Error.prototype.toString.call(value) + ']';
+}
 
 
-function ZStream() {
-  /* next input byte */
-  this.input = null; // JS specific, because we have no pointers
-  this.next_in = 0;
-  /* number of bytes available at input */
-  this.avail_in = 0;
-  /* total number of input bytes read so far */
-  this.total_in = 0;
-  /* next output byte should be put there */
-  this.output = null; // JS specific, because we have no pointers
-  this.next_out = 0;
-  /* remaining free space at output */
-  this.avail_out = 0;
-  /* total number of bytes output so far */
-  this.total_out = 0;
-  /* last error message, NULL if no error */
-  this.msg = ''/*Z_NULL*/;
-  /* not visible by applications */
-  this.state = null;
-  /* best guess about the data type: binary or text */
-  this.data_type = 2/*Z_UNKNOWN*/;
-  /* adler32 value of the uncompressed data */
-  this.adler = 0;
+function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
+  var output = [];
+  for (var i = 0, l = value.length; i < l; ++i) {
+    if (hasOwnProperty(value, String(i))) {
+      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
+          String(i), true));
+    } else {
+      output.push('');
+    }
+  }
+  keys.forEach(function(key) {
+    if (!key.match(/^\d+$/)) {
+      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
+          key, true));
+    }
+  });
+  return output;
 }
 
-module.exports = ZStream;
 
-},{}],17:[function(require,module,exports){
-importScripts('madeline.js')
+function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
+  var name, str, desc;
+  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
+  if (desc.get) {
+    if (desc.set) {
+      str = ctx.stylize('[Getter/Setter]', 'special');
+    } else {
+      str = ctx.stylize('[Getter]', 'special');
+    }
+  } else {
+    if (desc.set) {
+      str = ctx.stylize('[Setter]', 'special');
+    }
+  }
+  if (!hasOwnProperty(visibleKeys, key)) {
+    name = '[' + key + ']';
+  }
+  if (!str) {
+    if (ctx.seen.indexOf(desc.value) < 0) {
+      if (isNull(recurseTimes)) {
+        str = formatValue(ctx, desc.value, null);
+      } else {
+        str = formatValue(ctx, desc.value, recurseTimes - 1);
+      }
+      if (str.indexOf('\n') > -1) {
+        if (array) {
+          str = str.split('\n').map(function(line) {
+            return '  ' + line;
+          }).join('\n').substr(2);
+        } else {
+          str = '\n' + str.split('\n').map(function(line) {
+            return '   ' + line;
+          }).join('\n');
+        }
+      }
+    } else {
+      str = ctx.stylize('[Circular]', 'special');
+    }
+  }
+  if (isUndefined(name)) {
+    if (array && key.match(/^\d+$/)) {
+      return str;
+    }
+    name = JSON.stringify('' + key);
+    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
+      name = name.substr(1, name.length - 2);
+      name = ctx.stylize(name, 'name');
+    } else {
+      name = name.replace(/'/g, "\\'")
+                 .replace(/\\"/g, '"')
+                 .replace(/(^"|"$)/g, "'");
+      name = ctx.stylize(name, 'string');
+    }
+  }
 
-var filesizes = {
-	"afr": 1079573,
-	"ara": 1701536,
-	"aze": 1420865,
-	"bel": 1276820,
-	"ben": 6772012,
-	"bul": 1605615,
-	"cat": 1652368,
-	"ces": 1035441,
-	"chi_sim": 17710414,
-	"chi_tra": 24717749,
-	"chr": 320649,
-	"dan-frak": 677656,
-	"dan": 1972936,
-	"deu-frak": 822644,
-	"deu": 991656,
-	"ell": 859719,
-	"eng": 9453554,
-	"enm": 619254,
-	"epo": 1241212,
-	"equ": 821130,
-	"est": 1905040,
-	"eus": 1641190,
-	"fin": 979418,
-	"fra": 1376221,
-	"frk": 5912963,
-	"frm": 5147082,
-	"glg": 1674938,
-	"grc": 3012615,
-	"heb": 1051501,
-	"hin": 6590065,
-	"hrv": 1926995,
-	"hun": 3074473,
-	"ind": 1874776,
-	"isl": 1634041,
-	"ita": 948593,
-	"ita_old": 3436571,
-	"jpn": 13507168,
-	"kan": 4390317,
-	"kor": 5353098,
-	"lav": 1843944,
-	"lit": 1779240,
-	"mal": 5966263,
-	"meme": 88453,
-	"mkd": 1163087,
-	"mlt": 1463001,
-	"msa": 1665427,
-	"nld": 1134708,
-	"nor": 2191610,
-	"osd": 4274649,
-	"pol": 7024662,
-	"por": 909359,
-	"ron": 915680,
-	"rus": 5969957,
-	"slk-frak": 289885,
-	"slk": 2217342,
-	"slv": 1611338,
-	"spa": 883170,
-	"spa_old": 5647453,
-	"sqi": 1667041,
-	"srp": 1770244,
-	"swa": 757916,
-	"swe": 2451917,
-	"tam": 3498763,
-	"tel": 5795246,
-	"tgl": 1496256,
-	"tha": 3811136,
-	"tur": 3563264,
-	"ukr": 937566,
-	"vie": 2195922
+  return name + ': ' + str;
 }
 
-var pako = require('pako')
 
-var recognize = (function createTesseractInstance(){
+function reduceToSingleString(output, base, braces) {
+  var numLinesEst = 0;
+  var length = output.reduce(function(prev, cur) {
+    numLinesEst++;
+    if (cur.indexOf('\n') >= 0) numLinesEst++;
+    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
+  }, 0);
 
-	var Module = Tesseract304({
-		TOTAL_MEMORY: 90e6,
-		TesseractProgress: function(percent){
-			postMessage({
-				'progress': {
-					'recognized': percent/100
-				}
-			})
-		}
-	})
+  if (length > 60) {
+    return braces[0] +
+           (base === '' ? '' : base + '\n ') +
+           ' ' +
+           output.join(',\n  ') +
+           ' ' +
+           braces[1];
+  }
 
-	var base = new Module.TessBaseAPI()
-	var loaded_langs = []
-	var loadLanguage = function(lang, cb){ // NodeJS style callback
-		if(loaded_langs.indexOf(lang) != -1){
-			cb(null, lang)		
-		}
-		else{
-			Module.FS_createPath("/","tessdata",true,true)
-			var xhr = new XMLHttpRequest();
-			xhr.open('GET', 'https://cdn.rawgit.com/naptha/tessdata/gh-pages/3.02/'+lang+'.traineddata.gz', true);
-			xhr.responseType = 'arraybuffer';
-			xhr.onerror = function(){ cb(xhr, null) }
-			xhr.onprogress = function(e){
-				postMessage({
-					'progress': {
-						'loaded_lang_model': e.loaded/filesizes[lang]
-					}
-				})
-			}
-			xhr.onload = function(){
-				if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) {
-					postMessage({
-						'progress': 'unzipping_lang_model'
-					})
-					var data = pako.inflate(new Uint8Array(xhr.response))
-					postMessage({
-						'progress': 'unzipped_lang_model'
-					})
-					Module.FS_createDataFile('tessdata', lang +".traineddata", data, true, false);
-					loaded_langs.push(lang)
-					cb(null, lang)
-				} else cb(xhr, null);
-			}
-			xhr.send(null)
-		}
-	}
+  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
+}
 
-	function DumpLiterallyEverything(){
-			var ri = base.GetIterator();
-			var blocks = [];
-			var block, para, textline, word, symbol;
 
-			function enumToString(value, prefix){
-				return (Object.keys(Module)
-					.filter(function(e){ return e.startsWith(prefix + '_') })
-					.filter(function(e){ return Module[e] === value })
-					.map(function(e){ return e.slice(prefix.length + 1) })[0])
-			}
+// NOTE: These type checking functions intentionally don't use `instanceof`
+// because it is fragile and can be easily faked with `Object.create()`.
+function isArray(ar) {
+  return Array.isArray(ar);
+}
+exports.isArray = isArray;
 
-			do {
-				if(ri.IsAtBeginningOf(Module.RIL_BLOCK)){
-					var poly = ri.BlockPolygon();
-					var polygon = null;
-					// BlockPolygon() returns null when automatic page segmentation is off
-					if(Module.getPointer(poly) > 0){
-						var n = poly.get_n(),
-							px = poly.get_x(),
-							py = poly.get_y(),
-							polygon = [];
-						for(var i = 0; i < n; i++){
-							polygon.push([px.getValue(i), py.getValue(i)]);
-						}
-						Module._ptaDestroy(Module.getPointer(poly));	
-					}
-					
-					block = {
-						paragraphs: [],
+function isBoolean(arg) {
+  return typeof arg === 'boolean';
+}
+exports.isBoolean = isBoolean;
 
-						text: ri.GetUTF8Text(Module.RIL_BLOCK),
-						confidence: ri.Confidence(Module.RIL_BLOCK),
-						baseline: ri.getBaseline(Module.RIL_BLOCK),
-						bbox: ri.getBoundingBox(Module.RIL_BLOCK),
+function isNull(arg) {
+  return arg === null;
+}
+exports.isNull = isNull;
 
-						blocktype: enumToString(ri.BlockType(), 'PT'),
-						polygon: polygon
-					}
-					blocks.push(block)
-				}
-				if(ri.IsAtBeginningOf(Module.RIL_PARA)){
-					para = {
-						lines: [],
+function isNullOrUndefined(arg) {
+  return arg == null;
+}
+exports.isNullOrUndefined = isNullOrUndefined;
 
-						text: ri.GetUTF8Text(Module.RIL_PARA),
-						confidence: ri.Confidence(Module.RIL_PARA),
-						baseline: ri.getBaseline(Module.RIL_PARA),
-						bbox: ri.getBoundingBox(Module.RIL_PARA),
+function isNumber(arg) {
+  return typeof arg === 'number';
+}
+exports.isNumber = isNumber;
 
-						is_ltr: !!ri.ParagraphIsLtr()
-					}
-					block.paragraphs.push(para)
-				}
-				if(ri.IsAtBeginningOf(Module.RIL_TEXTLINE)){
-					textline = {
-						words: [],
+function isString(arg) {
+  return typeof arg === 'string';
+}
+exports.isString = isString;
 
-						text: ri.GetUTF8Text(Module.RIL_TEXTLINE),
-						confidence: ri.Confidence(Module.RIL_TEXTLINE),
-						baseline: ri.getBaseline(Module.RIL_TEXTLINE),
-						bbox: ri.getBoundingBox(Module.RIL_TEXTLINE)
-					}
-					para.lines.push(textline)
-				}
-				if(ri.IsAtBeginningOf(Module.RIL_WORD)){
-					var fontInfo = ri.getWordFontAttributes(),
-						wordDir = ri.WordDirection();
-					word = {
-						symbols: [],
-						choices: [],
+function isSymbol(arg) {
+  return typeof arg === 'symbol';
+}
+exports.isSymbol = isSymbol;
 
-						text: ri.GetUTF8Text(Module.RIL_WORD),
-						confidence: ri.Confidence(Module.RIL_WORD),
-						baseline: ri.getBaseline(Module.RIL_WORD),
-						bbox: ri.getBoundingBox(Module.RIL_WORD),
+function isUndefined(arg) {
+  return arg === void 0;
+}
+exports.isUndefined = isUndefined;
 
-						is_numeric: !!ri.WordIsNumeric(),
-						in_dictionary: !!ri.WordIsFromDictionary(),
-						direction: enumToString(wordDir, 'DIR'),
-						language: ri.WordRecognitionLanguage(),
+function isRegExp(re) {
+  return isObject(re) && objectToString(re) === '[object RegExp]';
+}
+exports.isRegExp = isRegExp;
 
-						is_bold: fontInfo.is_bold,
-						is_italic: fontInfo.is_italic,
-						is_underlined: fontInfo.is_underlined,
-						is_monospace: fontInfo.is_monospace,
-						is_serif: fontInfo.is_serif,
-						is_smallcaps: fontInfo.is_smallcaps,
-						font_size: fontInfo.pointsize,
-						font_id: fontInfo.font_id,
-						font_name: fontInfo.font_name,
-					}
-					var wc = new Module.WordChoiceIterator(ri);
-					do {
-						word.choices.push({
-							text: wc.GetUTF8Text(),
-							confidence: wc.Confidence()
-						})
-					} while (wc.Next());
-					Module.destroy(wc)
-					textline.words.push(word)
-				}
-				
-				var image = null;
-				// var pix = ri.GetBinaryImage(Module.RIL_SYMBOL)
-				// var image = pix2array(pix);
-				// // for some reason it seems that things stop working if you destroy pics
-				// Module._pixDestroy(Module.getPointer(pix));
+function isObject(arg) {
+  return typeof arg === 'object' && arg !== null;
+}
+exports.isObject = isObject;
 
-				symbol = {
-					choices: [],
-					image: image,
+function isDate(d) {
+  return isObject(d) && objectToString(d) === '[object Date]';
+}
+exports.isDate = isDate;
 
-					text: ri.GetUTF8Text(Module.RIL_SYMBOL),
-					confidence: ri.Confidence(Module.RIL_SYMBOL),
-					baseline: ri.getBaseline(Module.RIL_SYMBOL),
-					bbox: ri.getBoundingBox(Module.RIL_SYMBOL),
+function isError(e) {
+  return isObject(e) &&
+      (objectToString(e) === '[object Error]' || e instanceof Error);
+}
+exports.isError = isError;
 
-					is_superscript: !!ri.SymbolIsSuperscript(),
-					is_subscript: !!ri.SymbolIsSubscript(),
-					is_dropcap: !!ri.SymbolIsDropcap(),
-				}
-				word.symbols.push(symbol)
-				var ci = new Module.ChoiceIterator(ri);
-				do {
-					symbol.choices.push({
-						text: ci.GetUTF8Text(),
-						confidence: ci.Confidence()
-					})
-				} while (ci.Next());
-				Module.destroy(ci)
-			} while (ri.Next(Module.RIL_SYMBOL));
-			Module.destroy(ri)
+function isFunction(arg) {
+  return typeof arg === 'function';
+}
+exports.isFunction = isFunction;
+
+function isPrimitive(arg) {
+  return arg === null ||
+         typeof arg === 'boolean' ||
+         typeof arg === 'number' ||
+         typeof arg === 'string' ||
+         typeof arg === 'symbol' ||  // ES6 symbol
+         typeof arg === 'undefined';
+}
+exports.isPrimitive = isPrimitive;
 
-			return {
-				text: base.GetUTF8Text(),
-				html: base.GetHOCRText(),
+exports.isBuffer = require('./support/isBuffer');
 
-				confidence: base.MeanTextConf(),
+function objectToString(o) {
+  return Object.prototype.toString.call(o);
+}
 
-				blocks: blocks,
 
-				psm: enumToString(base.GetPageSegMode(), 'PSM'),
-				oem: enumToString(base.oem(), 'OEM'),
-				version: base.Version(),
-			}
-	}
+function pad(n) {
+  return n < 10 ? '0' + n.toString(10) : n.toString(10);
+}
 
-	function recognize(image, lang, options,cb){
-		var width, height;
-		if(image.data){
-			var src       = image.data;
-			width     	  = image.width, height = image.height;
-			var dst       = new Uint8Array(width * height);
-			var srcLength = src.length | 0, srcLength_16 = (srcLength - 16) | 0;
 
-			var coeff_r = 4899, coeff_g = 9617, coeff_b = 1868;
+var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
+              'Oct', 'Nov', 'Dec'];
 
-			for (var i = 0, j = 0; i <= srcLength_16; i += 16, j += 4) {
-				// convert to grayscale 4 pixels at a time;
-				// add 8192 = 1<<13 so for int n, float k >= .5,  ((n + k)*(1<<14) >> 14) = 1 + ((n)*(1<<14) >> 14)
-				dst[j]     = src[i+3] //(((src[i] * coeff_r + src[i+1] * coeff_g + src[i+2] * coeff_b + 8192) >> 14) * src[i+3]) >> 8 + 255 - src[i+3];
-				dst[j + 1] = src[i+4+3]//(((src[i+4] * coeff_r + src[i+5] * coeff_g + src[i+6] * coeff_b + 8192) >> 14) * src[i+3]) >> 8 + 255 - src[i+3];
-				dst[j + 2] = src[i+8+3]//(((src[i+8] * coeff_r + src[i+9] * coeff_g + src[i+10] * coeff_b + 8192) >> 14) * src[i+3]) >> 8 + 255 - src[i+3];
-				dst[j + 3] = src[i+12+3]//(((src[i+12] * coeff_r + src[i+13] * coeff_g + src[i+14] * coeff_b + 8192) >> 14) * src[i+3]) >> 8 + 255 - src[i+3];
-			}
-			for (; i < srcLength; i += 4, ++j) //finish up
-				dst[j] = (src[i] * coeff_r + src[i+1] * coeff_g + src[i+2] * coeff_b + 8192) >> 14;
-			
-			image = dst;
-			// for(var i = 0; i < image.length; i++) image[i] = image[i] > 128;
-		}
-		else {
-			throw 'Expected ImageData'
-		}
-		var ptr = Module.allocate(image, 'i8', Module.ALLOC_NORMAL);
-		
-		loadLanguage(lang, function(err, result){
+// 26 Feb 16:19:34
+function timestamp() {
+  var d = new Date();
+  var time = [pad(d.getHours()),
+              pad(d.getMinutes()),
+              pad(d.getSeconds())].join(':');
+  return [d.getDate(), months[d.getMonth()], time].join(' ');
+}
 
-			if(err){
-				console.error("error loading", lang);
-				cb(err, null)
-			}
-			base.Init(null, lang)
-			for (var option in options) {
-			    if (options.hasOwnProperty(option)) {
-			        base.SetVariable(option, options[option]);
-			        postMessage({
-						progress: {
-							set_variable: {
-								variable: option,
-								value: options[option]
-							}
-						}
-					})
-			    }
-			}
+
+// log is just a thin wrapper to console.log that prepends a timestamp
+exports.log = function() {
+  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
+};
 
 
-			base.SetImage(Module.wrapPointer(ptr), width, height, 1, width)
-			base.SetRectangle(0, 0, width, height)
-			base.GetUTF8Text()
-			var everything = DumpLiterallyEverything()
-			base.End();
-			Module._free(ptr); 
-			cb(null, everything)
-		})
-	}
+/**
+ * Inherit the prototype methods from one constructor into another.
+ *
+ * The Function.prototype.inherits from lang.js rewritten as a standalone
+ * function (not on Function.prototype). NOTE: If this file is to be loaded
+ * during bootstrapping this function needs to be rewritten using some native
+ * functions as prototype setup using normal JavaScript does not work as
+ * expected during bootstrapping (see mirror.js in r114903).
+ *
+ * @param {function} ctor Constructor function which needs to inherit the
+ *     prototype.
+ * @param {function} superCtor Constructor function to inherit prototype from.
+ */
+exports.inherits = require('inherits');
 
-	// base._simple = _simple
-	return recognize
-})()
+exports._extend = function(origin, add) {
+  // Don't do anything if add isn't an object
+  if (!add || !isObject(add)) return origin;
 
-onmessage = function(e) {
+  var keys = Object.keys(add);
+  var i = keys.length;
+  while (i--) {
+    origin[keys[i]] = add[keys[i]];
+  }
+  return origin;
+};
 
-	recognize(e.data.image, e.data.lang, e.data.options, function(err, result){
-		postMessage({err:err, result: result})	
-	})
+function hasOwnProperty(obj, prop) {
+  return Object.prototype.hasOwnProperty.call(obj, prop);
 }
-},{"pako":1}]},{},[17]);
+
+}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./support/isBuffer":40,"_process":39,"inherits":38}]},{},[33]);
diff --git a/package.json b/package.json
index ee439bb..6ca6dad 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,7 @@
   "description": "",
   "main": "Tesseract.js",
   "dependencies": {
+    "level-js": "^2.1.6",
     "pako": "^0.2.7"
   },
   "devDependencies": {},
diff --git a/worker_src/worker.js b/worker_src/worker.js
index d1b2c87..4e029d6 100644
--- a/worker_src/worker.js
+++ b/worker_src/worker.js
@@ -1,76 +1,23 @@
 importScripts('madeline.js')
+var leveljs = require('level-js')
+// var levelup = require('levelup')
+var db = leveljs('./tessdata', function(){
 
-var filesizes = {
-	"afr": 1079573,
-	"ara": 1701536,
-	"aze": 1420865,
-	"bel": 1276820,
-	"ben": 6772012,
-	"bul": 1605615,
-	"cat": 1652368,
-	"ces": 1035441,
-	"chi_sim": 17710414,
-	"chi_tra": 24717749,
-	"chr": 320649,
-	"dan-frak": 677656,
-	"dan": 1972936,
-	"deu-frak": 822644,
-	"deu": 991656,
-	"ell": 859719,
-	"eng": 9453554,
-	"enm": 619254,
-	"epo": 1241212,
-	"equ": 821130,
-	"est": 1905040,
-	"eus": 1641190,
-	"fin": 979418,
-	"fra": 1376221,
-	"frk": 5912963,
-	"frm": 5147082,
-	"glg": 1674938,
-	"grc": 3012615,
-	"heb": 1051501,
-	"hin": 6590065,
-	"hrv": 1926995,
-	"hun": 3074473,
-	"ind": 1874776,
-	"isl": 1634041,
-	"ita": 948593,
-	"ita_old": 3436571,
-	"jpn": 13507168,
-	"kan": 4390317,
-	"kor": 5353098,
-	"lav": 1843944,
-	"lit": 1779240,
-	"mal": 5966263,
-	"meme": 88453,
-	"mkd": 1163087,
-	"mlt": 1463001,
-	"msa": 1665427,
-	"nld": 1134708,
-	"nor": 2191610,
-	"osd": 4274649,
-	"pol": 7024662,
-	"por": 909359,
-	"ron": 915680,
-	"rus": 5969957,
-	"slk-frak": 289885,
-	"slk": 2217342,
-	"slv": 1611338,
-	"spa": 883170,
-	"spa_old": 5647453,
-	"sqi": 1667041,
-	"srp": 1770244,
-	"swa": 757916,
-	"swe": 2451917,
-	"tam": 3498763,
-	"tel": 5795246,
-	"tgl": 1496256,
-	"tha": 3811136,
-	"tur": 3563264,
-	"ukr": 937566,
-	"vie": 2195922
-}
+})
+// // 2) put a key & value
+// db.put('name2', 'LevelUP', function (err) {
+//   if (err) return console.log('Ooops!', err) // some kind of I/O error
+
+//   // 3) fetch by key
+//   db.get('name', function (err, value) {
+//     if (err) return console.log('Ooops!', err) // likely the key was not found
+//     console.log('my name is' + value)
+//   })
+// })
+
+
+
+var filesizes = {"afr": 1079573, "ara": 1701536, "aze": 1420865, "bel": 1276820, "ben": 6772012, "bul": 1605615, "cat": 1652368, "ces": 1035441, "chi_sim": 17710414, "chi_tra": 24717749, "chr": 320649, "dan-frak": 677656, "dan": 1972936, "deu-frak": 822644, "deu": 991656, "ell": 859719, "eng": 9453554, "enm": 619254, "epo": 1241212, "equ": 821130, "est": 1905040, "eus": 1641190, "fin": 979418, "fra": 1376221, "frk": 5912963, "frm": 5147082, "glg": 1674938, "grc": 3012615, "heb": 1051501, "hin": 6590065, "hrv": 1926995, "hun": 3074473, "ind": 1874776, "isl": 1634041, "ita": 948593, "ita_old": 3436571, "jpn": 13507168, "kan": 4390317, "kor": 5353098, "lav": 1843944, "lit": 1779240, "mal": 5966263, "meme": 88453, "mkd": 1163087, "mlt": 1463001, "msa": 1665427, "nld": 1134708, "nor": 2191610, "osd": 4274649, "pol": 7024662, "por": 909359, "ron": 915680, "rus": 5969957, "slk-frak": 289885, "slk": 2217342, "slv": 1611338, "spa": 883170, "spa_old": 5647453, "sqi": 1667041, "srp": 1770244, "swa": 757916, "swe": 2451917, "tam": 3498763, "tel": 5795246, "tgl": 1496256, "tha": 3811136, "tur": 3563264, "ukr": 937566, "vie": 2195922}
 
 var pako = require('pako')
 
@@ -95,32 +42,77 @@ var recognize = (function createTesseractInstance(){
 		}
 		else{
 			Module.FS_createPath("/","tessdata",true,true)
-			var xhr = new XMLHttpRequest();
-			xhr.open('GET', 'https://cdn.rawgit.com/naptha/tessdata/gh-pages/3.02/'+lang+'.traineddata.gz', true);
-			xhr.responseType = 'arraybuffer';
-			xhr.onerror = function(){ cb(xhr, null) }
-			xhr.onprogress = function(e){
+
+			var downloadlang = function(shouldcache){
 				postMessage({
-					'progress': {
-						'loaded_lang_model': e.loaded/filesizes[lang]
-					}
+					'progress': lang+' not found in cache, downloading'
 				})
-			}
-			xhr.onload = function(){
-				if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) {
+				var xhr = new XMLHttpRequest();
+				xhr.open('GET', 'https://cdn.rawgit.com/naptha/tessdata/gh-pages/3.02/'+lang+'.traineddata.gz', true);
+				xhr.responseType = 'arraybuffer';
+				xhr.onerror = function(){ cb(xhr, null) }
+				xhr.onprogress = function(e){
 					postMessage({
-						'progress': 'unzipping_lang_model'
-					})
-					var data = pako.inflate(new Uint8Array(xhr.response))
-					postMessage({
-						'progress': 'unzipped_lang_model'
+						'progress': {
+							'loaded_lang_model': e.loaded/filesizes[lang]
+						}
 					})
-					Module.FS_createDataFile('tessdata', lang +".traineddata", data, true, false);
-					loaded_langs.push(lang)
-					cb(null, lang)
-				} else cb(xhr, null);
+				}
+				xhr.onload = function(){
+					if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) {
+						postMessage({
+							'progress': 'unzipping_lang_model'
+						})
+
+						var response = new Uint8Array(xhr.response)
+
+						var data = pako.inflate(response)
+						postMessage({
+							'progress': 'unzipped_lang_model'
+						})
+
+						Module.FS_createDataFile('tessdata', lang +".traineddata", data, true, false);
+
+						if(shouldcache){
+							db.put(lang, response, function(err){
+								console.log('cached lang')
+							})
+						}
+
+						loaded_langs.push(lang)
+
+						cb(null, lang)
+					} else cb(xhr, null);
+				}
+				xhr.send(null)
 			}
-			xhr.send(null)
+
+			db.open({compression: false},function(err){
+				if (err) {
+					downloadlang(false)
+				}
+				else {
+					db.get(lang, function (err, value) {
+
+						// err = true
+
+						if (err) {
+							downloadlang(true)
+						}
+						else {
+							value = pako.inflate(value)
+
+							postMessage({
+								'progress': lang+' found in cache, length '+ value.length
+							})
+
+							Module.FS_createDataFile('tessdata', lang +".traineddata", value, true, false);
+							loaded_langs.push(lang)
+							cb(null, lang)
+						}
+					})
+				}
+			})
 		}
 	}
 
@@ -305,31 +297,35 @@ var recognize = (function createTesseractInstance(){
 
 			if(err){
 				console.error("error loading", lang);
+				Module._free(ptr); 
 				cb(err, null)
 			}
-			base.Init(null, lang)
-			for (var option in options) {
-			    if (options.hasOwnProperty(option)) {
-			        base.SetVariable(option, options[option]);
-			        postMessage({
-						progress: {
-							set_variable: {
-								variable: option,
-								value: options[option]
+			else {
+				base.Init(null, lang)
+				for (var option in options) {
+				    if (options.hasOwnProperty(option)) {
+				        base.SetVariable(option, options[option]);
+				        postMessage({
+							progress: {
+								set_variable: {
+									variable: option,
+									value: options[option]
+								}
 							}
-						}
-					})
-			    }
-			}
+						})
+				    }
+				}
+
 
+				base.SetImage(Module.wrapPointer(ptr), width, height, 1, width)
+				base.SetRectangle(0, 0, width, height)
+				base.GetUTF8Text()
+				var everything = DumpLiterallyEverything()
+				base.End();
+				Module._free(ptr); 
+				cb(null, everything)
 
-			base.SetImage(Module.wrapPointer(ptr), width, height, 1, width)
-			base.SetRectangle(0, 0, width, height)
-			base.GetUTF8Text()
-			var everything = DumpLiterallyEverything()
-			base.End();
-			Module._free(ptr); 
-			cb(null, everything)
+			}
 		})
 	}
 
@@ -337,7 +333,6 @@ var recognize = (function createTesseractInstance(){
 })()
 
 onmessage = function(e) {
-
 	recognize(e.data.image, e.data.lang, e.data.options, function(err, result){
 		postMessage({err:err, result: result})	
 	})