diff --git a/README.md b/README.md
index f1e8687..c149f27 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 [![npm version](https://badge.fury.io/js/tesseract.js.svg)](https://badge.fury.io/js/tesseract.js)
 [![Beerpay](https://img.shields.io/badge/Click%20Here%20-to%20Buy%20Us%20A%20Beer-red.svg)](https://beerpay.io/naptha/tesseract.js)
 
-Tesseract.js is a javascript library that gets words in [almost any language](./docs/tesseract_lang_list.md) out of images through [Optical Character Recognition(OCR)](https://en.wikipedia.org/wiki/Optical_character_recognition). ([Demo]https://en.wikipedia.org/wiki/Optical_character_recognition(http://tesseract.projectnaptha.com/))
+Tesseract.js is a javascript library that gets words in [almost any language](./docs/tesseract_lang_list.md) out of images, using [OCR](https://en.wikipedia.org/wiki/Optical_character_recognition). ([Demo](http://tesseract.projectnaptha.com/))
 
 [![fancy demo gif](./demo.gif "Demo")](http://tesseract.projectnaptha.com)
 
diff --git a/dist/tesseract.js b/dist/tesseract.js
index 5b928cc..f5feb64 100644
--- a/dist/tesseract.js
+++ b/dist/tesseract.js
@@ -1,89 +1,4 @@
 (function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Tesseract = f()}})(function(){var define,module,exports;return (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){
-'use strict';
-/* eslint-disable no-unused-vars */
-var hasOwnProperty = Object.prototype.hasOwnProperty;
-var propIsEnumerable = Object.prototype.propertyIsEnumerable;
-
-function toObject(val) {
-	if (val === null || val === undefined) {
-		throw new TypeError('Object.assign cannot be called with null or undefined');
-	}
-
-	return Object(val);
-}
-
-function shouldUseNative() {
-	try {
-		if (!Object.assign) {
-			return false;
-		}
-
-		// Detect buggy property enumeration order in older V8 versions.
-
-		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
-		var test1 = new String('abc');  // eslint-disable-line
-		test1[5] = 'de';
-		if (Object.getOwnPropertyNames(test1)[0] === '5') {
-			return false;
-		}
-
-		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
-		var test2 = {};
-		for (var i = 0; i < 10; i++) {
-			test2['_' + String.fromCharCode(i)] = i;
-		}
-		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
-			return test2[n];
-		});
-		if (order2.join('') !== '0123456789') {
-			return false;
-		}
-
-		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
-		var test3 = {};
-		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
-			test3[letter] = letter;
-		});
-		if (Object.keys(Object.assign({}, test3)).join('') !==
-				'abcdefghijklmnopqrst') {
-			return false;
-		}
-
-		return true;
-	} catch (e) {
-		// We don't expect any of the above to throw, but better to be safe.
-		return false;
-	}
-}
-
-module.exports = shouldUseNative() ? Object.assign : function (target, source) {
-	var from;
-	var to = toObject(target);
-	var symbols;
-
-	for (var s = 1; s < arguments.length; s++) {
-		from = Object(arguments[s]);
-
-		for (var key in from) {
-			if (hasOwnProperty.call(from, key)) {
-				to[key] = from[key];
-			}
-		}
-
-		if (Object.getOwnPropertySymbols) {
-			symbols = Object.getOwnPropertySymbols(from);
-			for (var i = 0; i < symbols.length; i++) {
-				if (propIsEnumerable.call(from, symbols[i])) {
-					to[symbols[i]] = from[symbols[i]];
-				}
-			}
-		}
-	}
-
-	return to;
-};
-
-},{}],2:[function(require,module,exports){
 // shim for using process in browser
 var process = module.exports = {};
 
@@ -265,7 +180,7 @@ process.chdir = function (dir) {
 };
 process.umask = function() { return 0; };
 
-},{}],3:[function(require,module,exports){
+},{}],2:[function(require,module,exports){
 module.exports={
   "name": "tesseract.js",
   "version": "1.0.10",
@@ -310,8 +225,7 @@ module.exports={
   },
   "homepage": "https://github.com/naptha/tesseract.js"
 }
-
-},{}],4:[function(require,module,exports){
+},{}],3:[function(require,module,exports){
 (function (process){
 'use strict';
 
@@ -418,7 +332,7 @@ function loadImage(image, cb) {
 }
 
 }).call(this,require('_process'))
-},{"../../package.json":3,"_process":2}],5:[function(require,module,exports){
+},{"../../package.json":2,"_process":1}],4:[function(require,module,exports){
 "use strict";
 
 // The result of dump.js is a big JSON tree
@@ -485,7 +399,7 @@ module.exports = function circularize(page) {
     return page;
 };
 
-},{}],6:[function(require,module,exports){
+},{}],5:[function(require,module,exports){
 'use strict';
 
 var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
@@ -596,7 +510,7 @@ module.exports = function () {
     return TesseractJob;
 }();
 
-},{"../node/index.js":4}],7:[function(require,module,exports){
+},{"../node/index.js":3}],6:[function(require,module,exports){
 'use strict';
 
 var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
@@ -606,15 +520,12 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 var adapter = require('./node/index.js');
 var circularize = require('./common/circularize.js');
 var TesseractJob = require('./common/job');
-var objectAssign = require('object-assign');
 var version = require('../package.json').version;
 
-function create(workerOptions) {
-	workerOptions = workerOptions || {};
-	var worker = new TesseractWorker(objectAssign({}, adapter.defaultOptions, workerOptions));
-	worker.create = create;
-	worker.version = version;
-	return worker;
+function create() {
+	var workerOptions = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+
+	return new TesseractWorker(Object.assign({}, adapter.defaultOptions, workerOptions, { create: create, version: version }));
 }
 
 var TesseractWorker = function () {
@@ -629,26 +540,25 @@ var TesseractWorker = function () {
 
 	_createClass(TesseractWorker, [{
 		key: 'recognize',
-		value: function recognize(image, options) {
+		value: function recognize(image) {
 			var _this = this;
 
+			var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+
 			return this._delay(function (job) {
-				if (typeof options === 'string') {
-					options = { lang: options };
-				} else {
-					options = options || {};
-					options.lang = options.lang || 'eng';
-				}
+				if (typeof options === 'string') options = { lang: options };
+				options.lang = options.lang || 'eng';
 
 				job._send('recognize', { image: image, options: options, workerOptions: _this.workerOptions });
 			});
 		}
 	}, {
 		key: 'detect',
-		value: function detect(image, options) {
+		value: function detect(image) {
 			var _this2 = this;
 
-			options = options || {};
+			var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+
 			return this._delay(function (job) {
 				job._send('detect', { image: image, options: options, workerOptions: _this2.workerOptions });
 			});
@@ -679,14 +589,13 @@ var TesseractWorker = function () {
 		key: '_dequeue',
 		value: function _dequeue() {
 			this._currentJob = null;
-			if (this._queue.length > 0) {
+			if (this._queue.length) {
 				this._queue[0]();
 			}
 		}
 	}, {
 		key: '_recv',
 		value: function _recv(packet) {
-
 			if (packet.status === 'resolve' && packet.action === 'recognize') {
 				packet.data = circularize(packet.data);
 			}
@@ -702,9 +611,7 @@ var TesseractWorker = function () {
 	return TesseractWorker;
 }();
 
-var DefaultTesseract = create();
-
-module.exports = DefaultTesseract;
+module.exports = create();
 
-},{"../package.json":3,"./common/circularize.js":5,"./common/job":6,"./node/index.js":4,"object-assign":1}]},{},[7])(7)
+},{"../package.json":2,"./common/circularize.js":4,"./common/job":5,"./node/index.js":3}]},{},[6])(6)
 });
\ No newline at end of file
diff --git a/dist/worker.js b/dist/worker.js
index 172d81e..cdcd7f6 100644
--- a/dist/worker.js
+++ b/dist/worker.js
@@ -82,7 +82,7 @@ AbstractChainedBatch.prototype.write = function (options, callback) {
 
 module.exports = AbstractChainedBatch
 }).call(this,require('_process'))
-},{"_process":33}],2:[function(require,module,exports){
+},{"_process":32}],2:[function(require,module,exports){
 (function (process){
 /* Copyright (c) 2013 Rod Vagg, MIT License */
 
@@ -135,7 +135,7 @@ AbstractIterator.prototype.end = function (callback) {
 module.exports = AbstractIterator
 
 }).call(this,require('_process'))
-},{"_process":33}],3:[function(require,module,exports){
+},{"_process":32}],3:[function(require,module,exports){
 (function (Buffer,process){
 /* Copyright (c) 2013 Rod Vagg, MIT License */
 
@@ -395,7 +395,7 @@ module.exports.AbstractIterator     = AbstractIterator
 module.exports.AbstractChainedBatch = AbstractChainedBatch
 
 }).call(this,{"isBuffer":require("../is-buffer/index.js")},require('_process'))
-},{"../is-buffer/index.js":9,"./abstract-chained-batch":1,"./abstract-iterator":2,"_process":33,"xtend":4}],4:[function(require,module,exports){
+},{"../is-buffer/index.js":10,"./abstract-chained-batch":1,"./abstract-iterator":2,"_process":32,"xtend":4}],4:[function(require,module,exports){
 module.exports = extend
 
 function extend() {
@@ -2323,7 +2323,7 @@ function isnan (val) {
 }
 
 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"base64-js":5,"ieee754":8,"isarray":10}],7:[function(require,module,exports){
+},{"base64-js":5,"ieee754":8,"isarray":11}],7:[function(require,module,exports){
 /*global window:false, self:false, define:false, module:false */
 
 /**
@@ -3817,6 +3817,31 @@ exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
 }
 
 },{}],9:[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
+  }
+}
+
+},{}],10:[function(require,module,exports){
 /*!
  * Determine if an object is a Buffer
  *
@@ -3839,14 +3864,14 @@ function isSlowBuffer (obj) {
   return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
 }
 
-},{}],10:[function(require,module,exports){
+},{}],11:[function(require,module,exports){
 var toString = {}.toString;
 
 module.exports = Array.isArray || function (arr) {
   return toString.call(arr) == '[object Array]';
 };
 
-},{}],11:[function(require,module,exports){
+},{}],12:[function(require,module,exports){
 var Buffer = require('buffer').Buffer;
 
 module.exports = isBuffer;
@@ -3856,7 +3881,7 @@ function isBuffer (o) {
     || /\[object (.+Array|Array.+)\]/.test(Object.prototype.toString.call(o));
 }
 
-},{"buffer":6}],12:[function(require,module,exports){
+},{"buffer":6}],13:[function(require,module,exports){
 (function (Buffer){
 module.exports = Level
 
@@ -4034,7 +4059,7 @@ var checkKeyValue = Level.prototype._checkKeyValue = function (obj, type) {
 }
 
 }).call(this,require("buffer").Buffer)
-},{"./iterator":13,"abstract-leveldown":3,"buffer":6,"idb-wrapper":7,"isbuffer":11,"typedarray-to-buffer":34,"util":37,"xtend":15}],13:[function(require,module,exports){
+},{"./iterator":14,"abstract-leveldown":3,"buffer":6,"idb-wrapper":7,"isbuffer":12,"typedarray-to-buffer":33,"util":35,"xtend":37}],14:[function(require,module,exports){
 var util = require('util')
 var AbstractIterator  = require('abstract-leveldown').AbstractIterator
 var ltgt = require('ltgt')
@@ -4108,43 +4133,7 @@ Iterator.prototype._next = function (callback) {
   this.callback = callback
 }
 
-},{"abstract-leveldown":3,"ltgt":16,"util":37}],14:[function(require,module,exports){
-module.exports = hasKeys
-
-function hasKeys(source) {
-    return source !== null &&
-        (typeof source === "object" ||
-        typeof source === "function")
-}
-
-},{}],15:[function(require,module,exports){
-var Keys = require("object-keys")
-var hasKeys = require("./has-keys")
-
-module.exports = extend
-
-function extend() {
-    var target = {}
-
-    for (var i = 0; i < arguments.length; i++) {
-        var source = arguments[i]
-
-        if (!hasKeys(source)) {
-            continue
-        }
-
-        var keys = Keys(source)
-
-        for (var j = 0; j < keys.length; j++) {
-            var name = keys[j]
-            target[name] = source[name]
-        }
-    }
-
-    return target
-}
-
-},{"./has-keys":14,"object-keys":18}],16:[function(require,module,exports){
+},{"abstract-leveldown":3,"ltgt":15,"util":35}],15:[function(require,module,exports){
 (function (Buffer){
 
 exports.compare = function (a, b) {
@@ -4294,7 +4283,7 @@ exports.filter = function (range, compare) {
 }
 
 }).call(this,{"isBuffer":require("../is-buffer/index.js")})
-},{"../is-buffer/index.js":9}],17:[function(require,module,exports){
+},{"../is-buffer/index.js":10}],16:[function(require,module,exports){
 var hasOwn = Object.prototype.hasOwnProperty;
 var toString = Object.prototype.toString;
 
@@ -4336,11 +4325,11 @@ module.exports = function forEach(obj, fn) {
 };
 
 
-},{}],18:[function(require,module,exports){
+},{}],17:[function(require,module,exports){
 module.exports = Object.keys || require('./shim');
 
 
-},{"./shim":20}],19:[function(require,module,exports){
+},{"./shim":19}],18:[function(require,module,exports){
 var toString = Object.prototype.toString;
 
 module.exports = function isArguments(value) {
@@ -4358,7 +4347,7 @@ module.exports = function isArguments(value) {
 };
 
 
-},{}],20:[function(require,module,exports){
+},{}],19:[function(require,module,exports){
 (function () {
 	"use strict";
 
@@ -4422,7 +4411,7 @@ module.exports = function isArguments(value) {
 }());
 
 
-},{"./foreach":17,"./isArguments":19}],21:[function(require,module,exports){
+},{"./foreach":16,"./isArguments":18}],20:[function(require,module,exports){
 'use strict';
 
 
@@ -4842,7 +4831,7 @@ exports.inflate = inflate;
 exports.inflateRaw = inflateRaw;
 exports.ungzip  = inflate;
 
-},{"./utils/common":22,"./utils/strings":23,"./zlib/constants":25,"./zlib/gzheader":27,"./zlib/inflate":29,"./zlib/messages":31,"./zlib/zstream":32}],22:[function(require,module,exports){
+},{"./utils/common":21,"./utils/strings":22,"./zlib/constants":24,"./zlib/gzheader":26,"./zlib/inflate":28,"./zlib/messages":30,"./zlib/zstream":31}],21:[function(require,module,exports){
 'use strict';
 
 
@@ -4946,7 +4935,7 @@ exports.setTyped = function (on) {
 
 exports.setTyped(TYPED_OK);
 
-},{}],23:[function(require,module,exports){
+},{}],22:[function(require,module,exports){
 // String encode/decode helpers
 'use strict';
 
@@ -5133,7 +5122,7 @@ exports.utf8border = function (buf, max) {
   return (pos + _utf8len[buf[pos]] > max) ? pos : max;
 };
 
-},{"./common":22}],24:[function(require,module,exports){
+},{"./common":21}],23:[function(require,module,exports){
 'use strict';
 
 // Note: adler32 takes 12% for level 0 and 2% for level 6.
@@ -5167,7 +5156,7 @@ function adler32(adler, buf, len, pos) {
 
 module.exports = adler32;
 
-},{}],25:[function(require,module,exports){
+},{}],24:[function(require,module,exports){
 'use strict';
 
 
@@ -5219,7 +5208,7 @@ module.exports = {
   //Z_NULL:                 null // Use -1 or null inline, depending on var type
 };
 
-},{}],26:[function(require,module,exports){
+},{}],25:[function(require,module,exports){
 'use strict';
 
 // Note: we can't get significant speed boost here.
@@ -5262,7 +5251,7 @@ function crc32(crc, buf, len, pos) {
 
 module.exports = crc32;
 
-},{}],27:[function(require,module,exports){
+},{}],26:[function(require,module,exports){
 'use strict';
 
 
@@ -5304,7 +5293,7 @@ function GZheader() {
 
 module.exports = GZheader;
 
-},{}],28:[function(require,module,exports){
+},{}],27:[function(require,module,exports){
 'use strict';
 
 // See state defs from inflate.js
@@ -5632,7 +5621,7 @@ module.exports = function inflate_fast(strm, start) {
   return;
 };
 
-},{}],29:[function(require,module,exports){
+},{}],28:[function(require,module,exports){
 'use strict';
 
 
@@ -7172,7 +7161,7 @@ exports.inflateSyncPoint = inflateSyncPoint;
 exports.inflateUndermine = inflateUndermine;
 */
 
-},{"../utils/common":22,"./adler32":24,"./crc32":26,"./inffast":28,"./inftrees":30}],30:[function(require,module,exports){
+},{"../utils/common":21,"./adler32":23,"./crc32":25,"./inffast":27,"./inftrees":29}],29:[function(require,module,exports){
 'use strict';
 
 
@@ -7501,7 +7490,7 @@ module.exports = function inflate_table(type, lens, lens_index, codes, table, ta
   return 0;
 };
 
-},{"../utils/common":22}],31:[function(require,module,exports){
+},{"../utils/common":21}],30:[function(require,module,exports){
 'use strict';
 
 module.exports = {
@@ -7516,7 +7505,7 @@ module.exports = {
   '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */
 };
 
-},{}],32:[function(require,module,exports){
+},{}],31:[function(require,module,exports){
 'use strict';
 
 
@@ -7547,7 +7536,7 @@ function ZStream() {
 
 module.exports = ZStream;
 
-},{}],33:[function(require,module,exports){
+},{}],32:[function(require,module,exports){
 // shim for using process in browser
 var process = module.exports = {};
 
@@ -7729,7 +7718,7 @@ process.chdir = function (dir) {
 };
 process.umask = function() { return 0; };
 
-},{}],34:[function(require,module,exports){
+},{}],33:[function(require,module,exports){
 (function (Buffer){
 /**
  * Convert a typed array to a Buffer without a copy
@@ -7752,39 +7741,14 @@ module.exports = function (arr) {
 }
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":6}],35:[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
-  }
-}
-
-},{}],36:[function(require,module,exports){
+},{"buffer":6}],34:[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';
 }
-},{}],37:[function(require,module,exports){
+},{}],35:[function(require,module,exports){
 (function (process,global){
 // Copyright Joyent, Inc. and other Node contributors.
 //
@@ -8374,7 +8338,43 @@ function hasOwnProperty(obj, prop) {
 }
 
 }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"./support/isBuffer":36,"_process":33,"inherits":35}],38:[function(require,module,exports){
+},{"./support/isBuffer":34,"_process":32,"inherits":9}],36:[function(require,module,exports){
+module.exports = hasKeys
+
+function hasKeys(source) {
+    return source !== null &&
+        (typeof source === "object" ||
+        typeof source === "function")
+}
+
+},{}],37:[function(require,module,exports){
+var Keys = require("object-keys")
+var hasKeys = require("./has-keys")
+
+module.exports = extend
+
+function extend() {
+    var target = {}
+
+    for (var i = 0; i < arguments.length; i++) {
+        var source = arguments[i]
+
+        if (!hasKeys(source)) {
+            continue
+        }
+
+        var keys = Keys(source)
+
+        for (var j = 0; j < keys.length; j++) {
+            var name = keys[j]
+            target[name] = source[name]
+        }
+    }
+
+    return target
+}
+
+},{"./has-keys":36,"object-keys":17}],38:[function(require,module,exports){
 'use strict';
 
 var leveljs = require('level-js');
@@ -8458,7 +8458,7 @@ function fetchLanguageData(req, res, cb) {
     xhr.send();
 }
 
-},{"../common/langdata.json":42,"level-js":12,"pako/lib/inflate.js":21}],39:[function(require,module,exports){
+},{"../common/langdata.json":42,"level-js":13,"pako/lib/inflate.js":20}],39:[function(require,module,exports){
 (function (process,global){
 'use strict';
 
@@ -8489,7 +8489,7 @@ exports.getLanguageData = require('./lang.js');
 workerUtils.setAdapter(module.exports);
 
 }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"../common/worker.js":43,"./lang.js":38,"_process":33}],40:[function(require,module,exports){
+},{"../common/worker.js":43,"./lang.js":38,"_process":32}],40:[function(require,module,exports){
 'use strict';
 
 // This converts an image to grayscale
@@ -8696,10 +8696,12 @@ module.exports={"afr": 1079573, "ara": 1701536, "aze": 1420865, "bel": 1276820,
 },{}],43:[function(require,module,exports){
 'use strict';
 
-var latestJob;
-var Module;
-var base;
-var adapter = {};
+var latestJob,
+    Module,
+    base,
+    adapter = {},
+    dump = require('./dump.js'),
+    desaturate = require('./desaturate.js');
 
 function dispatchHandlers(packet, send) {
     function respond(status, data) {
@@ -8735,7 +8737,7 @@ exports.setAdapter = function setAdapter(impl) {
 function handleInit(req, res) {
     var MIN_MEMORY = 100663296;
 
-    if (['chi_sim', 'chi_tra', 'jpn'].indexOf(req.options.lang) != -1) {
+    if (['chi_sim', 'chi_tra', 'jpn'].includes(req.options.lang)) {
         MIN_MEMORY = 167772160;
     }
 
@@ -8758,9 +8760,6 @@ function handleInit(req, res) {
     }
 }
 
-var dump = require('./dump.js');
-var desaturate = require('./desaturate.js');
-
 function setImage(Module, base, image) {
     var imgbin = desaturate(image),
         width = image.width,
@@ -8773,16 +8772,17 @@ function setImage(Module, base, image) {
 }
 
 function loadLanguage(req, res, cb) {
-    var lang = req.options.lang;
+    var lang = req.options.lang,
+        langFile = lang + '.traineddata';
 
     if (!Module._loadedLanguages) Module._loadedLanguages = {};
     if (lang in Module._loadedLanguages) return cb();
 
     adapter.getLanguageData(req, res, function (data) {
-        res.progress({ status: 'loading ' + lang + '.traineddata', progress: 0 });
-        Module.FS_createDataFile('tessdata', lang + ".traineddata", data, true, false);
+        res.progress({ status: 'loading ' + langFile, progress: 0 });
+        Module.FS_createDataFile('tessdata', langFile, data, true, false);
         Module._loadedLanguages[lang] = true;
-        res.progress({ status: 'loading ' + lang + '.traineddata', progress: 1 });
+        res.progress({ status: 'loading ' + langFile, progress: 1 });
         cb();
     });
 }
@@ -8791,22 +8791,25 @@ function handleRecognize(req, res) {
     handleInit(req, res);
 
     loadLanguage(req, res, function () {
-        var lang = req.options.lang;
+        var options = req.options;
+
+        function progressUpdate(progress) {
+            res.progress({ status: 'initializing api', progress: progress });
+        }
 
-        res.progress({ status: 'initializing api', progress: 0 });
-        base.Init(null, lang);
-        res.progress({ status: 'initializing api', progress: 0.3 });
+        progressUpdate(0);
+        base.Init(null, req.options.lang);
+        progressUpdate(.3);
 
-        var options = req.options;
         for (var option in options) {
             if (options.hasOwnProperty(option)) {
                 base.SetVariable(option, options[option]);
             }
         }
 
-        res.progress({ status: 'initializing api', progress: 0.6 });
+        progressUpdate(.6);
         var ptr = setImage(Module, base, req.image);
-        res.progress({ status: 'initializing api', progress: 1 });
+        progressUpdate(1);
 
         base.Recognize(null);
 
@@ -8823,37 +8826,31 @@ function handleDetect(req, res) {
     handleInit(req, res);
     req.options.lang = 'osd';
     loadLanguage(req, res, function () {
-
         base.Init(null, 'osd');
         base.SetPageSegMode(Module.PSM_OSD_ONLY);
 
-        var ptr = setImage(Module, base, req.image);
+        var ptr = setImage(Module, base, req.image),
+            results = new Module.OSResults();
 
-        var results = new Module.OSResults();
-        var success = base.DetectOS(results);
-        if (!success) {
+        if (!base.DetectOS(results)) {
             base.End();
             Module._free(ptr);
-            res.reject("failed to detect os");
+            res.reject("Failed to detect OS");
         } else {
-            var charset = results.get_unicharset();
-
-            var best = results.get_best_result();
-            var oid = best.get_orientation_id(),
+            var best = results.get_best_result(),
+                oid = best.get_orientation_id(),
                 sid = best.get_script_id();
 
-            var result = {
+            base.End();
+            Module._free(ptr);
+
+            res.resolve({
                 tesseract_script_id: sid,
-                script: charset.get_script_from_script_id(sid),
+                script: results.get_unicharset().get_script_from_script_id(sid),
                 script_confidence: best.get_sconfidence(),
                 orientation_degrees: [0, 270, 180, 90][oid],
                 orientation_confidence: best.get_oconfidence()
-            };
-
-            base.End();
-            Module._free(ptr);
-
-            res.resolve(result);
+            });
         }
     });
 }