Web Inspector: Add ESLint open source library to the inspector
authorjonowells@apple.com <jonowells@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Wed, 15 Oct 2014 03:28:55 +0000 (03:28 +0000)
committerjonowells@apple.com <jonowells@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Wed, 15 Oct 2014 03:28:55 +0000 (03:28 +0000)
https://bugs.webkit.org/show_bug.cgi?id=137714

Reviewed by Timothy Hatcher.

This adds the eslint.js external library for static analysis and the necessary license.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@174721 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebInspectorUI/ChangeLog
Source/WebInspectorUI/Scripts/copy-user-interface-resources.pl
Source/WebInspectorUI/UserInterface/External/ESLint/LICENSE [new file with mode: 0644]
Source/WebInspectorUI/UserInterface/External/ESLint/eslint.js [new file with mode: 0644]

index 266dca1..7b89b9a 100644 (file)
@@ -1,3 +1,16 @@
+2014-10-14  Jono Wells  <jonowells@apple.com>
+
+        Web Inspector: Add ESLint open source library to the inspector
+        https://bugs.webkit.org/show_bug.cgi?id=137714
+
+        Reviewed by Timothy Hatcher.
+
+        This adds the eslint.js external library for static analysis and the necessary license.
+
+        * Scripts/copy-user-interface-resources.pl:
+        * UserInterface/External/ESLint/LICENSE: Added.
+        * UserInterface/External/ESLint/eslint.js: Added.
+
 2014-10-14  Joseph Pecoraro  <pecoraro@apple.com>
 
         Web Inspector: paint flashing mode should be disabled when remote inspecting legacy iOS versions
index 4fadfc7..993d398 100755 (executable)
@@ -100,9 +100,11 @@ my $targetResourcePath = File::Spec->catdir($ENV{'TARGET_BUILD_DIR'}, $ENV{'UNLO
 my $protocolDir = File::Spec->catdir($targetResourcePath, 'Protocol');
 my $codeMirrorPath = File::Spec->catdir($uiRoot, 'External', 'CodeMirror');
 my $esprimaPath = File::Spec->catdir($uiRoot, 'External', 'Esprima');
+my $eslintPath = File::Spec->catdir($uiRoot, 'External', 'ESLint');
 
 my $codeMirrorLicense = readLicenseFile(File::Spec->catfile($codeMirrorPath, 'LICENSE'));
-my $esprimaMirrorLicense = readLicenseFile(File::Spec->catfile($esprimaPath, 'LICENSE'));
+my $esprimaLicense = readLicenseFile(File::Spec->catfile($esprimaPath, 'LICENSE'));
+my $eslintLicense = readLicenseFile(File::Spec->catfile($eslintPath, 'LICENSE'));
 
 make_path($protocolDir, $targetResourcePath);
 
@@ -155,7 +157,11 @@ if (defined $ENV{'COMBINE_INSPECTOR_RESOURCES'} && ($ENV{'COMBINE_INSPECTOR_RESO
 
     # Export the license into Esprima.js.
     my $targetEsprimaJS = File::Spec->catfile($targetResourcePath, 'Esprima.js');
-    seedFile($targetEsprimaJS, $esprimaMirrorLicense);
+    seedFile($targetEsprimaJS, $esprimaLicense);
+
+    # Export the license into ESLint.js.
+    my $targetESLintJS = File::Spec->catfile($targetResourcePath, 'ESLint.js');
+    seedFile($targetESLintJS, $eslintLicense);
 
     # Minify the Main.js and Main.css files, with Main.js appending to the license that was exported above.
     my $jsMinScript = File::Spec->catfile($scriptsRoot, 'jsmin.py');
@@ -173,6 +179,10 @@ if (defined $ENV{'COMBINE_INSPECTOR_RESOURCES'} && ($ENV{'COMBINE_INSPECTOR_RESO
     my $derivedSouressEsprimaJS = File::Spec->catfile($derivedSourcesDir, 'Esprima.js');
     system(qq("$python" "$jsMinScript" < "$derivedSouressEsprimaJS" >> "$targetEsprimaJS")) and die "Failed to minify $derivedSouressEsprimaJS: $!";
 
+    # Minify the ESLint.js file, appending to the license that was exported above.
+    my $derivedSouressESLintJS = File::Spec->catfile($derivedSourcesDir, 'ESLint.js');
+    system(qq("$python" "$jsMinScript" < "$derivedSouressESLintJS" >> "$targetESLintJS")) and die "Failed to minify $derivedSouressESLintJS: $!";
+
     # Copy over Main.html and the Images directory.
     copy($derivedSourcesMainHTML, File::Spec->catfile($targetResourcePath, 'Main.html'));
 
diff --git a/Source/WebInspectorUI/UserInterface/External/ESLint/LICENSE b/Source/WebInspectorUI/UserInterface/External/ESLint/LICENSE
new file mode 100644 (file)
index 0000000..d5f046f
--- /dev/null
@@ -0,0 +1,19 @@
+Copyright (c) 2014 TJ Holowaychuk <tj@vision-media.ca>
+
+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.
diff --git a/Source/WebInspectorUI/UserInterface/External/ESLint/eslint.js b/Source/WebInspectorUI/UserInterface/External/ESLint/eslint.js
new file mode 100644 (file)
index 0000000..3b123a2
--- /dev/null
@@ -0,0 +1,18223 @@
+!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.eslint=e()}}(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){
+module.exports={
+    "builtin": {
+        "NaN": false,
+        "Infinity": false,
+        "undefined": false,
+        "eval": false,
+
+        "parseFloat": false,
+        "parseInt": false,
+        "isNaN": false,
+        "isFinite": false,
+
+        "decodeURI": false,
+        "decodeURIComponent": false,
+        "encodeURI": false,
+        "encodeURIComponent": false,
+
+        "Object": false,
+        "Function": false,
+        "Array": false,
+        "String": false,
+        "Boolean": false,
+        "Map": false,
+        "Number": false,
+        "Date": false,
+        "RegExp": false,
+        "Error": false,
+        "EvalError": false,
+        "RangeError": false,
+        "ReferenceError": false,
+        "Set": false,
+        "SyntaxError": false,
+        "TypeError": false,
+        "URIError": false,
+        "WeakMap": false,
+        "WeakSet": false,
+
+        "ArrayBuffer": false,
+        "Float32Array": false,
+        "Float64Array": false,
+        "Int16Array": false,
+        "Int32Array": false,
+        "Int8Array": false,
+        "Uint16Array": false,
+        "Uint32Array": false,
+        "Uint8Array": false,
+        "Uint8ClampedArray": false,
+
+        "Math": false,
+        "JSON": false,
+
+        "toString": false,
+        "hasOwnProperty": false,
+        "valueOf": false,
+        "propertyIsEnumerable": false,
+        "constructor": false,
+        "isPrototypeOf": false,
+        "toLocaleString": false
+    },
+
+    "browser": {
+        "globals": {
+            "addEventListener": false,
+            "applicationCache": false,
+            "atob": false,
+            "Audio": false,
+            "Blob": false,
+            "blur": false,
+            "btoa": false,
+            "cancelAnimationFrame": false,
+            "clearInterval": false,
+            "clearTimeout": false,
+            "close": false,
+            "closed": false,
+            "crypto": false,
+            "DataView": false,
+            "defaultStatus": false,
+            "devicePixelRatio": false,
+            "dispatchEvent": false,
+            "document": false,
+            "DOMParser": false,
+            "Element": false,
+            "FileReader": false,
+            "find": false,
+            "focus": false,
+            "FormData": false,
+            "frameElement": false,
+            "frames": false,
+            "getComputedStyle": false,
+            "getSelection": false,
+            "history": false,
+            "HTMLAnchorElement": false,
+            "HTMLBaseElement": false,
+            "HTMLBodyElement": false,
+            "HTMLBRElement": false,
+            "HTMLButtonElement": false,
+            "HTMLCanvasElement": false,
+            "HTMLDirectoryElement": false,
+            "HTMLDivElement": false,
+            "HTMLDListElement": false,
+            "HTMLElement": false,
+            "HTMLFieldSetElement": false,
+            "HTMLFontElement": false,
+            "HTMLFormElement": false,
+            "HTMLFrameElement": false,
+            "HTMLFrameSetElement": false,
+            "HTMLHeadElement": false,
+            "HTMLHeadingElement": false,
+            "HTMLHRElement": false,
+            "HTMLHtmlElement": false,
+            "HTMLIFrameElement": false,
+            "HTMLImageElement": false,
+            "HTMLInputElement": false,
+            "HTMLLabelElement": false,
+            "HTMLLegendElement": false,
+            "HTMLLIElement": false,
+            "HTMLLinkElement": false,
+            "HTMLMapElement": false,
+            "HTMLMenuElement": false,
+            "HTMLMetaElement": false,
+            "HTMLModElement": false,
+            "HTMLObjectElement": false,
+            "HTMLOListElement": false,
+            "HTMLOptGroupElement": false,
+            "HTMLOptionElement": false,
+            "HTMLParagraphElement": false,
+            "HTMLParamElement": false,
+            "HTMLPreElement": false,
+            "HTMLQuoteElement": false,
+            "HTMLScriptElement": false,
+            "HTMLSelectElement": false,
+            "HTMLStyleElement": false,
+            "HTMLTableCaptionElement": false,
+            "HTMLTableCellElement": false,
+            "HTMLTableColElement": false,
+            "HTMLTableElement": false,
+            "HTMLTableRowElement": false,
+            "HTMLTableSectionElement": false,
+            "HTMLTextAreaElement": false,
+            "HTMLTitleElement": false,
+            "HTMLUListElement": false,
+            "HTMLVideoElement": false,
+            "Image": false,
+            "indexedDB": false,
+            "innerHeight": false,
+            "innerWidth": false,
+            "Intl": false,
+            "length": false,
+            "localStorage": false,
+            "location": false,
+            "matchMedia": false,
+            "MessageChannel": false,
+            "MessageEvent": false,
+            "MessagePort": false,
+            "moveBy": false,
+            "moveTo": false,
+            "MutationObserver": false,
+            "name": false,
+            "navigator": false,
+            "Node": false,
+            "NodeFilter": false,
+            "onbeforeunload": true,
+            "onblur": true,
+            "onerror": true,
+            "onfocus": true,
+            "onload": true,
+            "onresize": true,
+            "onunload": true,
+            "open": false,
+            "openDatabase": false,
+            "opener": false,
+            "Option": false,
+            "outerHeight": false,
+            "outerWidth": false,
+            "pageXOffset": false,
+            "pageYOffset": false,
+            "parent": false,
+            "postMessage": false,
+            "print": false,
+            "removeEventListener": false,
+            "requestAnimationFrame": false,
+            "resizeBy": false,
+            "resizeTo": false,
+            "screen": false,
+            "screenX": false,
+            "screenY": false,
+            "scroll": false,
+            "scrollbars": false,
+            "scrollBy": false,
+            "scrollTo": false,
+            "scrollX": false,
+            "scrollY": false,
+            "self": false,
+            "sessionStorage": false,
+            "setInterval": false,
+            "setTimeout": false,
+            "SharedWorker": false,
+            "showModalDialog": false,
+            "stop": false,
+            "SVGAElement": false,
+            "SVGAltGlyphDefElement": false,
+            "SVGAltGlyphElement": false,
+            "SVGAltGlyphItemElement": false,
+            "SVGAngle": false,
+            "SVGAnimateColorElement": false,
+            "SVGAnimatedAngle": false,
+            "SVGAnimatedBoolean": false,
+            "SVGAnimatedEnumeration": false,
+            "SVGAnimatedInteger": false,
+            "SVGAnimatedLength": false,
+            "SVGAnimatedLengthList": false,
+            "SVGAnimatedNumber": false,
+            "SVGAnimatedNumberList": false,
+            "SVGAnimatedPreserveAspectRatio": false,
+            "SVGAnimatedRect": false,
+            "SVGAnimatedString": false,
+            "SVGAnimatedTransformList": false,
+            "SVGAnimateElement": false,
+            "SVGAnimateMotionElement": false,
+            "SVGAnimateTransformElement": false,
+            "SVGAnimationElement": false,
+            "SVGCircleElement": false,
+            "SVGClipPathElement": false,
+            "SVGColor": false,
+            "SVGComponentTransferFunctionElement": false,
+            "SVGCursorElement": false,
+            "SVGDefsElement": false,
+            "SVGDescElement": false,
+            "SVGDocument": false,
+            "SVGElement": false,
+            "SVGElementInstance": false,
+            "SVGElementInstanceList": false,
+            "SVGEllipseElement": false,
+            "SVGFEBlendElement": false,
+            "SVGFEColorMatrixElement": false,
+            "SVGFEComponentTransferElement": false,
+            "SVGFECompositeElement": false,
+            "SVGFEConvolveMatrixElement": false,
+            "SVGFEDiffuseLightingElement": false,
+            "SVGFEDisplacementMapElement": false,
+            "SVGFEDistantLightElement": false,
+            "SVGFEFloodElement": false,
+            "SVGFEFuncAElement": false,
+            "SVGFEFuncBElement": false,
+            "SVGFEFuncGElement": false,
+            "SVGFEFuncRElement": false,
+            "SVGFEGaussianBlurElement": false,
+            "SVGFEImageElement": false,
+            "SVGFEMergeElement": false,
+            "SVGFEMergeNodeElement": false,
+            "SVGFEMorphologyElement": false,
+            "SVGFEOffsetElement": false,
+            "SVGFEPointLightElement": false,
+            "SVGFESpecularLightingElement": false,
+            "SVGFESpotLightElement": false,
+            "SVGFETileElement": false,
+            "SVGFETurbulenceElement": false,
+            "SVGFilterElement": false,
+            "SVGFontElement": false,
+            "SVGFontFaceElement": false,
+            "SVGFontFaceFormatElement": false,
+            "SVGFontFaceNameElement": false,
+            "SVGFontFaceSrcElement": false,
+            "SVGFontFaceUriElement": false,
+            "SVGForeignObjectElement": false,
+            "SVGGElement": false,
+            "SVGGlyphElement": false,
+            "SVGGlyphRefElement": false,
+            "SVGGradientElement": false,
+            "SVGHKernElement": false,
+            "SVGImageElement": false,
+            "SVGLength": false,
+            "SVGLengthList": false,
+            "SVGLinearGradientElement": false,
+            "SVGLineElement": false,
+            "SVGMarkerElement": false,
+            "SVGMaskElement": false,
+            "SVGMatrix": false,
+            "SVGMetadataElement": false,
+            "SVGMissingGlyphElement": false,
+            "SVGMPathElement": false,
+            "SVGNumber": false,
+            "SVGNumberList": false,
+            "SVGPaint": false,
+            "SVGPathElement": false,
+            "SVGPathSeg": false,
+            "SVGPathSegArcAbs": false,
+            "SVGPathSegArcRel": false,
+            "SVGPathSegClosePath": false,
+            "SVGPathSegCurvetoCubicAbs": false,
+            "SVGPathSegCurvetoCubicRel": false,
+            "SVGPathSegCurvetoCubicSmoothAbs": false,
+            "SVGPathSegCurvetoCubicSmoothRel": false,
+            "SVGPathSegCurvetoQuadraticAbs": false,
+            "SVGPathSegCurvetoQuadraticRel": false,
+            "SVGPathSegCurvetoQuadraticSmoothAbs": false,
+            "SVGPathSegCurvetoQuadraticSmoothRel": false,
+            "SVGPathSegLinetoAbs": false,
+            "SVGPathSegLinetoHorizontalAbs": false,
+            "SVGPathSegLinetoHorizontalRel": false,
+            "SVGPathSegLinetoRel": false,
+            "SVGPathSegLinetoVerticalAbs": false,
+            "SVGPathSegLinetoVerticalRel": false,
+            "SVGPathSegList": false,
+            "SVGPathSegMovetoAbs": false,
+            "SVGPathSegMovetoRel": false,
+            "SVGPatternElement": false,
+            "SVGPoint": false,
+            "SVGPointList": false,
+            "SVGPolygonElement": false,
+            "SVGPolylineElement": false,
+            "SVGPreserveAspectRatio": false,
+            "SVGRadialGradientElement": false,
+            "SVGRect": false,
+            "SVGRectElement": false,
+            "SVGRenderingIntent": false,
+            "SVGScriptElement": false,
+            "SVGSetElement": false,
+            "SVGStopElement": false,
+            "SVGStringList": false,
+            "SVGStyleElement": false,
+            "SVGSVGElement": false,
+            "SVGSwitchElement": false,
+            "SVGSymbolElement": false,
+            "SVGTextContentElement": false,
+            "SVGTextElement": false,
+            "SVGTextPathElement": false,
+            "SVGTextPositioningElement": false,
+            "SVGTitleElement": false,
+            "SVGTransform": false,
+            "SVGTransformList": false,
+            "SVGTRefElement": false,
+            "SVGTSpanElement": false,
+            "SVGUnitTypes": false,
+            "SVGUseElement": false,
+            "SVGViewElement": false,
+            "SVGViewSpec": false,
+            "SVGVKernElement": false,
+            "top": false,
+            "WebSocket": false,
+            "window": false,
+            "Worker": false,
+            "XMLHttpRequest": false,
+            "XMLSerializer": false,
+            "XPathEvaluator": false,
+            "XPathExpression": false,
+            "XPathResult": false
+        }
+    },
+
+    "node": {
+        "globals": {
+            "__filename": false,
+            "__dirname": false,
+            "Buffer": false,
+            "DataView": false,
+            "console": false,
+            "exports": true,
+            "GLOBAL": false,
+            "global": false,
+            "module": false,
+            "process": false,
+            "require": false,
+            "setTimeout": false,
+            "clearTimeout": false,
+            "setInterval": false,
+            "clearInterval": false,
+            "setImmediate": false,
+            "clearImmediate": false
+        },
+
+        "rules": {
+            "no-catch-shadow": 0,
+            "no-console": 0,
+            "no-mixed-requires": 2,
+            "no-new-require": 2,
+            "no-path-concat": 2,
+            "no-process-exit": 2,
+            "global-strict": [0, "always"],
+            "handle-callback-err": [2, "err"]
+        }
+    },
+
+    "amd": {
+        "globals": {
+            "require": false,
+            "define": false
+        }
+    },
+
+    "mocha": {
+        "globals": {
+            "describe": false,
+            "it": false,
+            "before": false,
+            "after": false,
+            "beforeEach": false,
+            "afterEach": false,
+
+            "suite": false,
+            "test": false,
+            "setup": false,
+            "teardown": false,
+            "suiteSetup": false,
+            "suiteTeardown": false
+        }
+    },
+
+    "jasmine": {
+        "globals": {
+            "afterEach": false,
+            "beforeEach": false,
+            "describe": false,
+            "expect": false,
+            "it": false,
+            "jasmine": false,
+            "pending": false,
+            "spyOn": false,
+            "waits": false,
+            "waitsFor": false,
+            "xdescribe": false,
+            "xit": false
+        }
+    }
+}
+
+},{}],2:[function(require,module,exports){
+module.exports={
+    "env": {
+        "browser": false,
+        "node": false,
+        "amd": false,
+        "mocha": false,
+        "jasmine": false
+    },
+
+    "rules": {
+        "no-alert": 2,
+        "no-array-constructor": 2,
+        "no-bitwise": 0,
+        "no-caller": 2,
+        "no-catch-shadow": 2,
+        "no-comma-dangle": 2,
+        "no-cond-assign": 2,
+        "no-console": 2,
+        "no-constant-condition": 2,
+        "no-control-regex": 2,
+        "no-debugger": 2,
+        "no-delete-var": 2,
+        "no-div-regex": 0,
+        "no-dupe-keys": 2,
+        "no-else-return": 0,
+        "no-empty": 2,
+        "no-empty-class": 2,
+        "no-empty-label": 2,
+        "no-eq-null": 0,
+        "no-eval": 2,
+        "no-ex-assign": 2,
+        "no-extend-native": 2,
+        "no-extra-bind": 2,
+        "no-extra-boolean-cast": 2,
+        "no-extra-parens": 0,
+        "no-extra-semi": 2,
+        "no-extra-strict": 2,
+        "no-fallthrough": 2,
+        "no-floating-decimal": 0,
+        "no-func-assign": 2,
+        "no-implied-eval": 2,
+        "no-inner-declarations": [2, "functions"],
+        "no-invalid-regexp": 2,
+        "no-iterator": 2,
+        "no-label-var": 2,
+        "no-labels": 2,
+        "no-lone-blocks": 2,
+        "no-lonely-if": 0,
+        "no-loop-func": 2,
+        "no-mixed-requires": [0, false],
+        "no-mixed-spaces-and-tabs": [2, false],
+        "no-multi-spaces": 2,
+        "no-multi-str": 2,
+        "no-multiple-empty-lines": [0, {"max": 2}],
+        "no-native-reassign": 2,
+        "no-negated-in-lhs": 2,
+        "no-nested-ternary": 0,
+        "no-new": 2,
+        "no-new-func": 2,
+        "no-new-object": 2,
+        "no-new-require": 0,
+        "no-new-wrappers": 2,
+        "no-obj-calls": 2,
+        "no-octal": 2,
+        "no-octal-escape": 2,
+        "no-path-concat": 0,
+        "no-plusplus": 0,
+        "no-process-env": 0,
+        "no-process-exit": 2,
+        "no-proto": 2,
+        "no-redeclare": 2,
+        "no-regex-spaces": 2,
+        "no-reserved-keys": 0,
+        "no-restricted-modules": 0,
+        "no-return-assign": 2,
+        "no-script-url": 2,
+        "no-self-compare": 0,
+        "no-sequences": 2,
+        "no-shadow": 2,
+        "no-shadow-restricted-names": 2,
+        "no-space-before-semi": 2,
+        "no-spaced-func": 2,
+        "no-sparse-arrays": 2,
+        "no-sync": 0,
+        "no-ternary": 0,
+        "no-trailing-spaces": 2,
+        "no-undef": 2,
+        "no-undef-init": 2,
+        "no-undefined": 0,
+        "no-underscore-dangle": 2,
+        "no-unreachable": 2,
+        "no-unused-expressions": 2,
+        "no-unused-vars": [2, {"vars": "all", "args": "after-used"}],
+        "no-use-before-define": 2,
+        "no-void": 0,
+        "no-warning-comments": [0, { "terms": ["todo", "fixme", "xxx"], "location": "start" }],
+        "no-with": 2,
+        "no-wrap-func": 2,
+
+        "block-scoped-var": 0,
+        "brace-style": [0, "1tbs"],
+        "camelcase": 2,
+        "comma-spacing": 2,
+        "comma-style": 0,
+        "complexity": [0, 11],
+        "consistent-return": 2,
+        "consistent-this": [0, "that"],
+        "curly": [2, "all"],
+        "default-case": 0,
+        "dot-notation": 2,
+        "eol-last": 2,
+        "eqeqeq": 2,
+        "func-names": 0,
+        "func-style": [0, "declaration"],
+        "global-strict": [2, "never"],
+        "guard-for-in": 0,
+        "handle-callback-err": 0,
+        "key-spacing": [2, { "beforeColon": false, "afterColon": true }],
+        "max-depth": [0, 4],
+        "max-len": [0, 80, 4],
+        "max-nested-callbacks": [0, 2],
+        "max-params": [0, 3],
+        "max-statements": [0, 10],
+        "new-cap": 2,
+        "new-parens": 2,
+        "one-var": 0,
+        "padded-blocks": 0,
+        "quote-props": 0,
+        "quotes": [2, "double"],
+        "radix": 0,
+        "semi": 2,
+        "sort-vars": 0,
+        "space-after-keywords": [0, "always"],
+        "space-before-blocks": [0, "always"],
+        "space-in-brackets": [0, "never"],
+        "space-in-parens": [0, "never"],
+        "space-infix-ops": 2,
+        "space-return-throw-case": 2,
+        "space-unary-word-ops": 0,
+        "spaced-line-comment": [0, "always"],
+        "strict": 2,
+        "use-isnan": 2,
+        "valid-jsdoc": 0,
+        "valid-typeof": 2,
+        "vars-on-top": 0,
+        "wrap-iife": 0,
+        "wrap-regex": 0,
+        "yoda": [2, "never"]
+    }
+}
+
+},{}],3:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+function EventEmitter() {
+  this._events = this._events || {};
+  this._maxListeners = this._maxListeners || undefined;
+}
+module.exports = EventEmitter;
+
+// Backwards-compat with node 0.10.x
+EventEmitter.EventEmitter = EventEmitter;
+
+EventEmitter.prototype._events = undefined;
+EventEmitter.prototype._maxListeners = undefined;
+
+// By default EventEmitters will print a warning if more than 10 listeners are
+// added to it. This is a useful default which helps finding memory leaks.
+EventEmitter.defaultMaxListeners = 10;
+
+// Obviously not all Emitters should be limited to 10. This function allows
+// that to be increased. Set to zero for unlimited.
+EventEmitter.prototype.setMaxListeners = function(n) {
+  if (!isNumber(n) || n < 0 || isNaN(n))
+    throw TypeError('n must be a positive number');
+  this._maxListeners = n;
+  return this;
+};
+
+EventEmitter.prototype.emit = function(type) {
+  var er, handler, len, args, i, listeners;
+
+  if (!this._events)
+    this._events = {};
+
+  // If there is no 'error' event listener then throw.
+  if (type === 'error') {
+    if (!this._events.error ||
+        (isObject(this._events.error) && !this._events.error.length)) {
+      er = arguments[1];
+      if (er instanceof Error) {
+        throw er; // Unhandled 'error' event
+      }
+      throw TypeError('Uncaught, unspecified "error" event.');
+    }
+  }
+
+  handler = this._events[type];
+
+  if (isUndefined(handler))
+    return false;
+
+  if (isFunction(handler)) {
+    switch (arguments.length) {
+      // fast cases
+      case 1:
+        handler.call(this);
+        break;
+      case 2:
+        handler.call(this, arguments[1]);
+        break;
+      case 3:
+        handler.call(this, arguments[1], arguments[2]);
+        break;
+      // slower
+      default:
+        len = arguments.length;
+        args = new Array(len - 1);
+        for (i = 1; i < len; i++)
+          args[i - 1] = arguments[i];
+        handler.apply(this, args);
+    }
+  } else if (isObject(handler)) {
+    len = arguments.length;
+    args = new Array(len - 1);
+    for (i = 1; i < len; i++)
+      args[i - 1] = arguments[i];
+
+    listeners = handler.slice();
+    len = listeners.length;
+    for (i = 0; i < len; i++)
+      listeners[i].apply(this, args);
+  }
+
+  return true;
+};
+
+EventEmitter.prototype.addListener = function(type, listener) {
+  var m;
+
+  if (!isFunction(listener))
+    throw TypeError('listener must be a function');
+
+  if (!this._events)
+    this._events = {};
+
+  // To avoid recursion in the case that type === "newListener"! Before
+  // adding it to the listeners, first emit "newListener".
+  if (this._events.newListener)
+    this.emit('newListener', type,
+              isFunction(listener.listener) ?
+              listener.listener : listener);
+
+  if (!this._events[type])
+    // Optimize the case of one listener. Don't need the extra array object.
+    this._events[type] = listener;
+  else if (isObject(this._events[type]))
+    // If we've already got an array, just append.
+    this._events[type].push(listener);
+  else
+    // Adding the second element, need to change to array.
+    this._events[type] = [this._events[type], listener];
+
+  // Check for listener leak
+  if (isObject(this._events[type]) && !this._events[type].warned) {
+    var m;
+    if (!isUndefined(this._maxListeners)) {
+      m = this._maxListeners;
+    } else {
+      m = EventEmitter.defaultMaxListeners;
+    }
+
+    if (m && m > 0 && this._events[type].length > m) {
+      this._events[type].warned = true;
+      console.error('(node) warning: possible EventEmitter memory ' +
+                    'leak detected. %d listeners added. ' +
+                    'Use emitter.setMaxListeners() to increase limit.',
+                    this._events[type].length);
+      if (typeof console.trace === 'function') {
+        // not supported in IE 10
+        console.trace();
+      }
+    }
+  }
+
+  return this;
+};
+
+EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+
+EventEmitter.prototype.once = function(type, listener) {
+  if (!isFunction(listener))
+    throw TypeError('listener must be a function');
+
+  var fired = false;
+
+  function g() {
+    this.removeListener(type, g);
+
+    if (!fired) {
+      fired = true;
+      listener.apply(this, arguments);
+    }
+  }
+
+  g.listener = listener;
+  this.on(type, g);
+
+  return this;
+};
+
+// emits a 'removeListener' event iff the listener was removed
+EventEmitter.prototype.removeListener = function(type, listener) {
+  var list, position, length, i;
+
+  if (!isFunction(listener))
+    throw TypeError('listener must be a function');
+
+  if (!this._events || !this._events[type])
+    return this;
+
+  list = this._events[type];
+  length = list.length;
+  position = -1;
+
+  if (list === listener ||
+      (isFunction(list.listener) && list.listener === listener)) {
+    delete this._events[type];
+    if (this._events.removeListener)
+      this.emit('removeListener', type, listener);
+
+  } else if (isObject(list)) {
+    for (i = length; i-- > 0;) {
+      if (list[i] === listener ||
+          (list[i].listener && list[i].listener === listener)) {
+        position = i;
+        break;
+      }
+    }
+
+    if (position < 0)
+      return this;
+
+    if (list.length === 1) {
+      list.length = 0;
+      delete this._events[type];
+    } else {
+      list.splice(position, 1);
+    }
+
+    if (this._events.removeListener)
+      this.emit('removeListener', type, listener);
+  }
+
+  return this;
+};
+
+EventEmitter.prototype.removeAllListeners = function(type) {
+  var key, listeners;
+
+  if (!this._events)
+    return this;
+
+  // not listening for removeListener, no need to emit
+  if (!this._events.removeListener) {
+    if (arguments.length === 0)
+      this._events = {};
+    else if (this._events[type])
+      delete this._events[type];
+    return this;
+  }
+
+  // emit removeListener for all listeners on all events
+  if (arguments.length === 0) {
+    for (key in this._events) {
+      if (key === 'removeListener') continue;
+      this.removeAllListeners(key);
+    }
+    this.removeAllListeners('removeListener');
+    this._events = {};
+    return this;
+  }
+
+  listeners = this._events[type];
+
+  if (isFunction(listeners)) {
+    this.removeListener(type, listeners);
+  } else {
+    // LIFO order
+    while (listeners.length)
+      this.removeListener(type, listeners[listeners.length - 1]);
+  }
+  delete this._events[type];
+
+  return this;
+};
+
+EventEmitter.prototype.listeners = function(type) {
+  var ret;
+  if (!this._events || !this._events[type])
+    ret = [];
+  else if (isFunction(this._events[type]))
+    ret = [this._events[type]];
+  else
+    ret = this._events[type].slice();
+  return ret;
+};
+
+EventEmitter.listenerCount = function(emitter, type) {
+  var ret;
+  if (!emitter._events || !emitter._events[type])
+    ret = 0;
+  else if (isFunction(emitter._events[type]))
+    ret = 1;
+  else
+    ret = emitter._events[type].length;
+  return ret;
+};
+
+function isFunction(arg) {
+  return typeof arg === 'function';
+}
+
+function isNumber(arg) {
+  return typeof arg === 'number';
+}
+
+function isObject(arg) {
+  return typeof arg === 'object' && arg !== null;
+}
+
+function isUndefined(arg) {
+  return arg === void 0;
+}
+
+},{}],4:[function(require,module,exports){
+/*
+  Copyright (C) 2012-2014 Yusuke Suzuki <utatane.tea@gmail.com>
+  Copyright (C) 2014 Dan Tao <daniel.tao@gmail.com>
+  Copyright (C) 2013 Andrew Eisenberg <andrew@eisenberg.as>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/*jslint bitwise:true plusplus:true eqeq:true nomen:true*/
+/*global doctrine:true, exports:true, parseTypeExpression:true, parseTop:true*/
+
+(function (exports) {
+    'use strict';
+
+    var VERSION,
+        Regex,
+        CanAccessStringByIndex,
+        typed,
+        jsdoc,
+        isArray,
+        hasOwnProperty;
+
+    // Sync with package.json.
+    VERSION = '0.5.2-dev';
+
+    // See also tools/generate-unicode-regex.py.
+    Regex = {
+        NonAsciiIdentifierStart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
+        NonAsciiIdentifierPart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0300-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u0483-\u0487\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u05d0-\u05ea\u05f0-\u05f2\u0610-\u061a\u0620-\u0669\u066e-\u06d3\u06d5-\u06dc\u06df-\u06e8\u06ea-\u06fc\u06ff\u0710-\u074a\u074d-\u07b1\u07c0-\u07f5\u07fa\u0800-\u082d\u0840-\u085b\u08a0\u08a2-\u08ac\u08e4-\u08fe\u0900-\u0963\u0966-\u096f\u0971-\u0977\u0979-\u097f\u0981-\u0983\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bc-\u09c4\u09c7\u09c8\u09cb-\u09ce\u09d7\u09dc\u09dd\u09df-\u09e3\u09e6-\u09f1\u0a01-\u0a03\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a59-\u0a5c\u0a5e\u0a66-\u0a75\u0a81-\u0a83\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abc-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ad0\u0ae0-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3c-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5c\u0b5d\u0b5f-\u0b63\u0b66-\u0b6f\u0b71\u0b82\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd0\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c58\u0c59\u0c60-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbc-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0cde\u0ce0-\u0ce3\u0ce6-\u0cef\u0cf1\u0cf2\u0d02\u0d03\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d-\u0d44\u0d46-\u0d48\u0d4a-\u0d4e\u0d57\u0d60-\u0d63\u0d66-\u0d6f\u0d7a-\u0d7f\u0d82\u0d83\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e01-\u0e3a\u0e40-\u0e4e\u0e50-\u0e59\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb9\u0ebb-\u0ebd\u0ec0-\u0ec4\u0ec6\u0ec8-\u0ecd\u0ed0-\u0ed9\u0edc-\u0edf\u0f00\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e-\u0f47\u0f49-\u0f6c\u0f71-\u0f84\u0f86-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1049\u1050-\u109d\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u135d-\u135f\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176c\u176e-\u1770\u1772\u1773\u1780-\u17d3\u17d7\u17dc\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1820-\u1877\u1880-\u18aa\u18b0-\u18f5\u1900-\u191c\u1920-\u192b\u1930-\u193b\u1946-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u19d0-\u19d9\u1a00-\u1a1b\u1a20-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1aa7\u1b00-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1bf3\u1c00-\u1c37\u1c40-\u1c49\u1c4d-\u1c7d\u1cd0-\u1cd2\u1cd4-\u1cf6\u1d00-\u1de6\u1dfc-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u200c\u200d\u203f\u2040\u2054\u2071\u207f\u2090-\u209c\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d7f-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2de0-\u2dff\u2e2f\u3005-\u3007\u3021-\u302f\u3031-\u3035\u3038-\u303c\u3041-\u3096\u3099\u309a\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua62b\ua640-\ua66f\ua674-\ua67d\ua67f-\ua697\ua69f-\ua6f1\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua827\ua840-\ua873\ua880-\ua8c4\ua8d0-\ua8d9\ua8e0-\ua8f7\ua8fb\ua900-\ua92d\ua930-\ua953\ua960-\ua97c\ua980-\ua9c0\ua9cf-\ua9d9\uaa00-\uaa36\uaa40-\uaa4d\uaa50-\uaa59\uaa60-\uaa76\uaa7a\uaa7b\uaa80-\uaac2\uaadb-\uaadd\uaae0-\uaaef\uaaf2-\uaaf6\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabea\uabec\uabed\uabf0-\uabf9\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\ufe70-\ufe74\ufe76-\ufefc\uff10-\uff19\uff21-\uff3a\uff3f\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]')
+    };
+
+    CanAccessStringByIndex = typeof 'doctrine'[0] !== undefined;
+
+    function sliceSource(source, index, last) {
+        var output;
+        if (!CanAccessStringByIndex) {
+            output = source.slice(index, last).join('');
+        } else {
+            output = source.slice(index, last);
+        }
+        return output;
+    }
+
+    isArray = Array.isArray;
+    if (!isArray) {
+        isArray = function isArray(ary) {
+            return Object.prototype.toString.call(ary) === '[object Array]';
+        };
+    }
+
+    hasOwnProperty = (function () {
+        var func = Object.prototype.hasOwnProperty;
+        return function hasOwnProperty(obj, name) {
+            return func.call(obj, name);
+        };
+    }());
+
+    function shallowCopy(obj) {
+        var ret = {}, key;
+        for (key in obj) {
+            if (obj.hasOwnProperty(key)) {
+                ret[key] = obj[key];
+            }
+        }
+        return ret;
+    }
+
+    function isLineTerminator(ch) {
+        return ch === '\n' || ch === '\r' || ch === '\u2028' || ch === '\u2029';
+    }
+
+    function isWhiteSpace(ch) {
+        return (ch === ' ') || (ch === '\u0009') || (ch === '\u000B') ||
+            (ch === '\u000C') || (ch === '\u00A0') ||
+            (ch.charCodeAt(0) >= 0x1680 &&
+             '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(ch) >= 0);
+    }
+
+    function isDecimalDigit(ch) {
+        return '0123456789'.indexOf(ch) >= 0;
+    }
+
+    function isHexDigit(ch) {
+        return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
+    }
+
+    function isOctalDigit(ch) {
+        return '01234567'.indexOf(ch) >= 0;
+    }
+
+    function isASCIIAlphanumeric(ch) {
+        return (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || (ch >= '0' && ch <= '9');
+    }
+
+    function isIdentifierStart(ch) {
+        return (ch === '$') || (ch === '_') || (ch === '\\') ||
+            (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ||
+            ((ch.charCodeAt(0) >= 0x80) && Regex.NonAsciiIdentifierStart.test(ch));
+    }
+
+    function isIdentifierPart(ch) {
+        return (ch === '$') || (ch === '_') || (ch === '\\') ||
+            (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ||
+            ((ch >= '0') && (ch <= '9')) ||
+            ((ch.charCodeAt(0) >= 0x80) && Regex.NonAsciiIdentifierPart.test(ch));
+    }
+
+    function isTypeName(ch) {
+        return '><(){}[],:*|?!='.indexOf(ch) === -1 && !isWhiteSpace(ch) && !isLineTerminator(ch);
+    }
+
+    function isParamTitle(title) {
+        return title === 'param' || title === 'argument' || title === 'arg';
+    }
+
+    function isProperty(title) {
+        return title === 'property' || title === 'prop';
+    }
+
+    function isNameParameterRequired(title) {
+        return isParamTitle(title) || isProperty(title) ||
+            title === 'alias' || title === 'this' || title === 'mixes' || title === 'requires';
+    }
+
+    function isAllowedName(title) {
+        return isNameParameterRequired(title) || title === 'const' || title === 'constant';
+    }
+
+    function isAllowedNested(title) {
+        return isProperty(title) || isParamTitle(title);
+    }
+
+    function isTypeParameterRequired(title) {
+        return isParamTitle(title) || title === 'define' || title === 'enum' ||
+            title === 'implements' || title === 'return' ||
+            title === 'this' || title === 'type' || title === 'typedef' ||
+            title === 'returns' || isProperty(title);
+    }
+
+    // Consider deprecation instead using 'isTypeParameterRequired' and 'Rules' declaration to pick when a type is optional/required
+    // This would require changes to 'parseType'
+    function isAllowedType(title) {
+        return isTypeParameterRequired(title) || title === 'throws' || title === 'const' || title === 'constant' ||
+            title === 'namespace' || title === 'member' || title === 'var' || title === 'module' ||
+            title === 'constructor' || title === 'class' || title === 'extends' || title === 'augments' ||
+            title === 'public' || title === 'private' || title === 'protected';
+    }
+
+    function DoctrineError(message) {
+        this.name = 'DoctrineError';
+        this.message = message;
+    }
+    DoctrineError.prototype = new Error();
+    DoctrineError.prototype.constructor = DoctrineError;
+
+    function throwError(message) {
+        throw new DoctrineError(message);
+    }
+
+    function assert(cond, text) {
+        if (VERSION.slice(-3) === 'dev') {
+            if (!cond) {
+                throwError(text);
+            }
+        }
+    }
+
+    function trim(str) {
+        return str.replace(/^\s+/, '').replace(/\s+$/, '');
+    }
+
+    function unwrapComment(doc) {
+        // JSDoc comment is following form
+        //   /**
+        //    * .......
+        //    */
+        // remove /**, */ and *
+        var BEFORE_STAR = 0,
+            STAR = 1,
+            AFTER_STAR = 2,
+            index,
+            len,
+            mode,
+            result,
+            ch;
+
+        doc = doc.replace(/^\/\*\*?/, '').replace(/\*\/$/, '');
+        index = 0;
+        len = doc.length;
+        mode = BEFORE_STAR;
+        result = '';
+
+        while (index < len) {
+            ch = doc[index];
+            switch (mode) {
+            case BEFORE_STAR:
+                if (isLineTerminator(ch)) {
+                    result += ch;
+                } else if (ch === '*') {
+                    mode = STAR;
+                } else if (!isWhiteSpace(ch)) {
+                    result += ch;
+                    mode = AFTER_STAR;
+                }
+                break;
+
+            case STAR:
+                if (!isWhiteSpace(ch)) {
+                    result += ch;
+                }
+                mode = isLineTerminator(ch) ? BEFORE_STAR : AFTER_STAR;
+                break;
+
+            case AFTER_STAR:
+                result += ch;
+                if (isLineTerminator(ch)) {
+                    mode = BEFORE_STAR;
+                }
+                break;
+            }
+            index += 1;
+        }
+
+        return result;
+    }
+
+    // Type Expression Parser
+
+    (function (exports) {
+        var Syntax,
+            Token,
+            source,
+            length,
+            index,
+            previous,
+            token,
+            value;
+
+        Syntax = {
+            NullableLiteral: 'NullableLiteral',
+            AllLiteral: 'AllLiteral',
+            NullLiteral: 'NullLiteral',
+            UndefinedLiteral: 'UndefinedLiteral',
+            VoidLiteral: 'VoidLiteral',
+            UnionType: 'UnionType',
+            ArrayType: 'ArrayType',
+            RecordType: 'RecordType',
+            FieldType: 'FieldType',
+            FunctionType: 'FunctionType',
+            ParameterType: 'ParameterType',
+            RestType: 'RestType',
+            NonNullableType: 'NonNullableType',
+            OptionalType: 'OptionalType',
+            NullableType: 'NullableType',
+            NameExpression: 'NameExpression',
+            TypeApplication: 'TypeApplication'
+        };
+
+        Token = {
+            ILLEGAL: 0,    // ILLEGAL
+            DOT: 1,        // .
+            DOT_LT: 2,     // .<
+            REST: 3,       // ...
+            LT: 4,         // <
+            GT: 5,         // >
+            LPAREN: 6,     // (
+            RPAREN: 7,     // )
+            LBRACE: 8,     // {
+            RBRACE: 9,     // }
+            LBRACK: 10,    // [
+            RBRACK: 11,    // ]
+            COMMA: 12,     // ,
+            COLON: 13,     // :
+            STAR: 14,      // *
+            PIPE: 15,      // |
+            QUESTION: 16,  // ?
+            BANG: 17,      // !
+            EQUAL: 18,     // =
+            NAME: 19,      // name token
+            STRING: 20,    // string
+            NUMBER: 21,    // number
+            EOF: 22
+        };
+
+        function Context(previous, index, token, value) {
+            this._previous = previous;
+            this._index = index;
+            this._token = token;
+            this._value = value;
+        }
+
+        Context.prototype.restore = function () {
+            previous = this._previous;
+            index = this._index;
+            token = this._token;
+            value = this._value;
+        };
+
+        Context.save = function () {
+            return new Context(previous, index, token, value);
+        };
+
+        function advance() {
+            var ch = source[index];
+            index += 1;
+            return ch;
+        }
+
+        function scanHexEscape(prefix) {
+            var i, len, ch, code = 0;
+
+            len = (prefix === 'u') ? 4 : 2;
+            for (i = 0; i < len; ++i) {
+                if (index < length && isHexDigit(source[index])) {
+                    ch = advance();
+                    code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
+                } else {
+                    return '';
+                }
+            }
+            return String.fromCharCode(code);
+        }
+
+        function scanString() {
+            var str = '', quote, ch, code, unescaped, restore; //TODO review removal octal = false
+            quote = source[index];
+            ++index;
+
+            while (index < length) {
+                ch = advance();
+
+                if (ch === quote) {
+                    quote = '';
+                    break;
+                } else if (ch === '\\') {
+                    ch = advance();
+                    if (!isLineTerminator(ch)) {
+                        switch (ch) {
+                        case 'n':
+                            str += '\n';
+                            break;
+                        case 'r':
+                            str += '\r';
+                            break;
+                        case 't':
+                            str += '\t';
+                            break;
+                        case 'u':
+                        case 'x':
+                            restore = index;
+                            unescaped = scanHexEscape(ch);
+                            if (unescaped) {
+                                str += unescaped;
+                            } else {
+                                index = restore;
+                                str += ch;
+                            }
+                            break;
+                        case 'b':
+                            str += '\b';
+                            break;
+                        case 'f':
+                            str += '\f';
+                            break;
+                        case 'v':
+                            str += '\v';
+                            break;
+
+                        default:
+                            if (isOctalDigit(ch)) {
+                                code = '01234567'.indexOf(ch);
+
+                                // \0 is not octal escape sequence
+                                // Deprecating unused code. TODO review removal
+                                //if (code !== 0) {
+                                //    octal = true;
+                                //}
+
+                                if (index < length && isOctalDigit(source[index])) {
+                                    //TODO Review Removal octal = true;
+                                    code = code * 8 + '01234567'.indexOf(advance());
+
+                                    // 3 digits are only allowed when string starts
+                                    // with 0, 1, 2, 3
+                                    if ('0123'.indexOf(ch) >= 0 &&
+                                            index < length &&
+                                            isOctalDigit(source[index])) {
+                                        code = code * 8 + '01234567'.indexOf(advance());
+                                    }
+                                }
+                                str += String.fromCharCode(code);
+                            } else {
+                                str += ch;
+                            }
+                            break;
+                        }
+                    } else {
+                        if (ch ===  '\r' && source[index] === '\n') {
+                            ++index;
+                        }
+                    }
+                } else if (isLineTerminator(ch)) {
+                    break;
+                } else {
+                    str += ch;
+                }
+            }
+
+            if (quote !== '') {
+                throwError('unexpected quote');
+            }
+
+            value = str;
+            return Token.STRING;
+        }
+
+        function scanNumber() {
+            var number, ch;
+
+            number = '';
+            if (ch !== '.') {
+                number = advance();
+                ch = source[index];
+
+                if (number === '0') {
+                    if (ch === 'x' || ch === 'X') {
+                        number += advance();
+                        while (index < length) {
+                            ch = source[index];
+                            if (!isHexDigit(ch)) {
+                                break;
+                            }
+                            number += advance();
+                        }
+
+                        if (number.length <= 2) {
+                            // only 0x
+                            throwError('unexpected token');
+                        }
+
+                        if (index < length) {
+                            ch = source[index];
+                            if (isIdentifierStart(ch)) {
+                                throwError('unexpected token');
+                            }
+                        }
+                        value = parseInt(number, 16);
+                        return Token.NUMBER;
+                    }
+
+                    if (isOctalDigit(ch)) {
+                        number += advance();
+                        while (index < length) {
+                            ch = source[index];
+                            if (!isOctalDigit(ch)) {
+                                break;
+                            }
+                            number += advance();
+                        }
+
+                        if (index < length) {
+                            ch = source[index];
+                            if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
+                                throwError('unexpected token');
+                            }
+                        }
+                        value = parseInt(number, 8);
+                        return Token.NUMBER;
+                    }
+
+                    if (isDecimalDigit(ch)) {
+                        throwError('unexpected token');
+                    }
+                }
+
+                while (index < length) {
+                    ch = source[index];
+                    if (!isDecimalDigit(ch)) {
+                        break;
+                    }
+                    number += advance();
+                }
+            }
+
+            if (ch === '.') {
+                number += advance();
+                while (index < length) {
+                    ch = source[index];
+                    if (!isDecimalDigit(ch)) {
+                        break;
+                    }
+                    number += advance();
+                }
+            }
+
+            if (ch === 'e' || ch === 'E') {
+                number += advance();
+
+                ch = source[index];
+                if (ch === '+' || ch === '-') {
+                    number += advance();
+                }
+
+                ch = source[index];
+                if (isDecimalDigit(ch)) {
+                    number += advance();
+                    while (index < length) {
+                        ch = source[index];
+                        if (!isDecimalDigit(ch)) {
+                            break;
+                        }
+                        number += advance();
+                    }
+                } else {
+                    throwError('unexpected token');
+                }
+            }
+
+            if (index < length) {
+                ch = source[index];
+                if (isIdentifierStart(ch)) {
+                    throwError('unexpected token');
+                }
+            }
+
+            value = parseFloat(number);
+            return Token.NUMBER;
+        }
+
+
+        function scanTypeName() {
+            var ch, ch2;
+
+            value = advance();
+            while (index < length && isTypeName(source[index])) {
+                ch = source[index];
+                if (ch === '.') {
+                    if ((index + 1) < length) {
+                        ch2 = source[index + 1];
+                        if (ch2 === '<') {
+                            break;
+                        }
+                    }
+                }
+                value += advance();
+            }
+            return Token.NAME;
+        }
+
+        function next() {
+            var ch;
+
+            previous = index;
+
+            while (index < length && isWhiteSpace(source[index])) {
+                advance();
+            }
+            if (index >= length) {
+                token = Token.EOF;
+                return token;
+            }
+
+            ch = source[index];
+            switch (ch) {
+            case '"':
+                token = scanString();
+                return token;
+
+            case ':':
+                advance();
+                token = Token.COLON;
+                return token;
+
+            case ',':
+                advance();
+                token = Token.COMMA;
+                return token;
+
+            case '(':
+                advance();
+                token = Token.LPAREN;
+                return token;
+
+            case ')':
+                advance();
+                token = Token.RPAREN;
+                return token;
+
+            case '[':
+                advance();
+                token = Token.LBRACK;
+                return token;
+
+            case ']':
+                advance();
+                token = Token.RBRACK;
+                return token;
+
+            case '{':
+                advance();
+                token = Token.LBRACE;
+                return token;
+
+            case '}':
+                advance();
+                token = Token.RBRACE;
+                return token;
+
+            case '.':
+                advance();
+                if (index < length) {
+                    ch = source[index];
+                    if (ch === '<') {
+                        advance();
+                        token = Token.DOT_LT;
+                        return token;
+                    }
+
+                    if (ch === '.' && index + 1 < length && source[index + 1] === '.') {
+                        advance();
+                        advance();
+                        token = Token.REST;
+                        return token;
+                    }
+
+                    if (isDecimalDigit(ch)) {
+                        token = scanNumber();
+                        return token;
+                    }
+                }
+                token = Token.DOT;
+                return token;
+
+            case '<':
+                advance();
+                token = Token.LT;
+                return token;
+
+            case '>':
+                advance();
+                token = Token.GT;
+                return token;
+
+            case '*':
+                advance();
+                token = Token.STAR;
+                return token;
+
+            case '|':
+                advance();
+                token = Token.PIPE;
+                return token;
+
+            case '?':
+                advance();
+                token = Token.QUESTION;
+                return token;
+
+            case '!':
+                advance();
+                token = Token.BANG;
+                return token;
+
+            case '=':
+                advance();
+                token = Token.EQUAL;
+                return token;
+
+            default:
+                if (isDecimalDigit(ch)) {
+                    token = scanNumber();
+                    return token;
+                }
+
+                // type string permits following case,
+                //
+                // namespace.module.MyClass
+                //
+                // this reduced 1 token TK_NAME
+                if (isTypeName(ch)) {
+                    token = scanTypeName();
+                    return token;
+                }
+
+                token = Token.ILLEGAL;
+                return token;
+            }
+        }
+
+        function consume(target, text) {
+            assert(token === target, text || 'consumed token not matched');
+            next();
+        }
+
+        function expect(target) {
+            if (token !== target) {
+                throwError('unexpected token');
+            }
+            next();
+        }
+
+        // UnionType := '(' TypeUnionList ')'
+        //
+        // TypeUnionList :=
+        //     <<empty>>
+        //   | NonemptyTypeUnionList
+        //
+        // NonemptyTypeUnionList :=
+        //     TypeExpression
+        //   | TypeExpression '|' NonemptyTypeUnionList
+        function parseUnionType() {
+            var elements;
+            consume(Token.LPAREN, 'UnionType should start with (');
+            elements = [];
+            if (token !== Token.RPAREN) {
+                while (true) {
+                    elements.push(parseTypeExpression());
+                    if (token === Token.RPAREN) {
+                        break;
+                    }
+                    expect(Token.PIPE);
+                }
+            }
+            consume(Token.RPAREN, 'UnionType should end with )');
+            return {
+                type: Syntax.UnionType,
+                elements: elements
+            };
+        }
+
+        // ArrayType := '[' ElementTypeList ']'
+        //
+        // ElementTypeList :=
+        //     <<empty>>
+        //  | TypeExpression
+        //  | '...' TypeExpression
+        //  | TypeExpression ',' ElementTypeList
+        function parseArrayType() {
+            var elements;
+            consume(Token.LBRACK, 'ArrayType should start with [');
+            elements = [];
+            while (token !== Token.RBRACK) {
+                if (token === Token.REST) {
+                    consume(Token.REST);
+                    elements.push({
+                        type: Syntax.RestType,
+                        expression: parseTypeExpression()
+                    });
+                    break;
+                } else {
+                    elements.push(parseTypeExpression());
+                }
+                if (token !== Token.RBRACK) {
+                    expect(Token.COMMA);
+                }
+            }
+            expect(Token.RBRACK);
+            return {
+                type: Syntax.ArrayType,
+                elements: elements
+            };
+        }
+
+        function parseFieldName() {
+            var v = value;
+            if (token === Token.NAME || token === Token.STRING) {
+                next();
+                return v;
+            }
+
+            if (token === Token.NUMBER) {
+                consume(Token.NUMBER);
+                return String(v);
+            }
+
+            throwError('unexpected token');
+        }
+
+        // FieldType :=
+        //     FieldName
+        //   | FieldName ':' TypeExpression
+        //
+        // FieldName :=
+        //     NameExpression
+        //   | StringLiteral
+        //   | NumberLiteral
+        //   | ReservedIdentifier
+        function parseFieldType() {
+            var key;
+
+            key = parseFieldName();
+            if (token === Token.COLON) {
+                consume(Token.COLON);
+                return {
+                    type: Syntax.FieldType,
+                    key: key,
+                    value: parseTypeExpression()
+                };
+            }
+            return {
+                type: Syntax.FieldType,
+                key: key,
+                value: null
+            };
+        }
+
+        // RecordType := '{' FieldTypeList '}'
+        //
+        // FieldTypeList :=
+        //     <<empty>>
+        //   | FieldType
+        //   | FieldType ',' FieldTypeList
+        function parseRecordType() {
+            var fields;
+
+            consume(Token.LBRACE, 'RecordType should start with {');
+            fields = [];
+            if (token === Token.COMMA) {
+                consume(Token.COMMA);
+            } else {
+                while (token !== Token.RBRACE) {
+                    fields.push(parseFieldType());
+                    if (token !== Token.RBRACE) {
+                        expect(Token.COMMA);
+                    }
+                }
+            }
+            expect(Token.RBRACE);
+            return {
+                type: Syntax.RecordType,
+                fields: fields
+            };
+        }
+
+        function parseNameExpression() {
+            var name = value;
+            expect(Token.NAME);
+            return {
+                type: Syntax.NameExpression,
+                name: name
+            };
+        }
+
+        // TypeExpressionList :=
+        //     TopLevelTypeExpression
+        //   | TopLevelTypeExpression ',' TypeExpressionList
+        function parseTypeExpressionList() {
+            var elements = [];
+
+            elements.push(parseTop());
+            while (token === Token.COMMA) {
+                consume(Token.COMMA);
+                elements.push(parseTop());
+            }
+            return elements;
+        }
+
+        // TypeName :=
+        //     NameExpression
+        //   | NameExpression TypeApplication
+        //
+        // TypeApplication :=
+        //     '.<' TypeExpressionList '>'
+        //   | '<' TypeExpressionList '>'   // this is extension of doctrine
+        function parseTypeName() {
+            var expr, applications;
+
+            expr = parseNameExpression();
+            if (token === Token.DOT_LT || token === Token.LT) {
+                next();
+                applications = parseTypeExpressionList();
+                expect(Token.GT);
+                return {
+                    type: Syntax.TypeApplication,
+                    expression: expr,
+                    applications: applications
+                };
+            }
+            return expr;
+        }
+
+        // ResultType :=
+        //     <<empty>>
+        //   | ':' void
+        //   | ':' TypeExpression
+        //
+        // BNF is above
+        // but, we remove <<empty>> pattern, so token is always TypeToken::COLON
+        function parseResultType() {
+            consume(Token.COLON, 'ResultType should start with :');
+            if (token === Token.NAME && value === 'void') {
+                consume(Token.NAME);
+                return {
+                    type: Syntax.VoidLiteral
+                };
+            }
+            return parseTypeExpression();
+        }
+
+        // ParametersType :=
+        //     RestParameterType
+        //   | NonRestParametersType
+        //   | NonRestParametersType ',' RestParameterType
+        //
+        // RestParameterType :=
+        //     '...'
+        //     '...' Identifier
+        //
+        // NonRestParametersType :=
+        //     ParameterType ',' NonRestParametersType
+        //   | ParameterType
+        //   | OptionalParametersType
+        //
+        // OptionalParametersType :=
+        //     OptionalParameterType
+        //   | OptionalParameterType, OptionalParametersType
+        //
+        // OptionalParameterType := ParameterType=
+        //
+        // ParameterType := TypeExpression | Identifier ':' TypeExpression
+        //
+        // Identifier is "new" or "this"
+        function parseParametersType() {
+            var params = [], normal = true, expr, rest = false;
+
+            while (token !== Token.RPAREN) {
+                if (token === Token.REST) {
+                    // RestParameterType
+                    consume(Token.REST);
+                    rest = true;
+                }
+
+                expr = parseTypeExpression();
+                if (expr.type === Syntax.NameExpression && token === Token.COLON) {
+                    // Identifier ':' TypeExpression
+                    consume(Token.COLON);
+                    expr = {
+                        type: Syntax.ParameterType,
+                        name: expr.name,
+                        expression: parseTypeExpression()
+                    };
+                }
+                if (token === Token.EQUAL) {
+                    consume(Token.EQUAL);
+                    expr = {
+                        type: Syntax.OptionalType,
+                        expression: expr
+                    };
+                    normal = false;
+                } else {
+                    if (!normal) {
+                        throwError('unexpected token');
+                    }
+                }
+                if (rest) {
+                    expr = {
+                        type: Syntax.RestType,
+                        expression: expr
+                    };
+                }
+                params.push(expr);
+                if (token !== Token.RPAREN) {
+                    expect(Token.COMMA);
+                }
+            }
+            return params;
+        }
+
+        // FunctionType := 'function' FunctionSignatureType
+        //
+        // FunctionSignatureType :=
+        //   | TypeParameters '(' ')' ResultType
+        //   | TypeParameters '(' ParametersType ')' ResultType
+        //   | TypeParameters '(' 'this' ':' TypeName ')' ResultType
+        //   | TypeParameters '(' 'this' ':' TypeName ',' ParametersType ')' ResultType
+        function parseFunctionType() {
+            var isNew, thisBinding, params, result, fnType;
+            assert(token === Token.NAME && value === 'function', 'FunctionType should start with \'function\'');
+            consume(Token.NAME);
+
+            // Google Closure Compiler is not implementing TypeParameters.
+            // So we do not. if we don't get '(', we see it as error.
+            expect(Token.LPAREN);
+
+            isNew = false;
+            params = [];
+            thisBinding = null;
+            if (token !== Token.RPAREN) {
+                // ParametersType or 'this'
+                if (token === Token.NAME &&
+                        (value === 'this' || value === 'new')) {
+                    // 'this' or 'new'
+                    // 'new' is Closure Compiler extension
+                    isNew = value === 'new';
+                    consume(Token.NAME);
+                    expect(Token.COLON);
+                    thisBinding = parseTypeName();
+                    if (token === Token.COMMA) {
+                        consume(Token.COMMA);
+                        params = parseParametersType();
+                    }
+                } else {
+                    params = parseParametersType();
+                }
+            }
+
+            expect(Token.RPAREN);
+
+            result = null;
+            if (token === Token.COLON) {
+                result = parseResultType();
+            }
+
+            fnType = {
+                type: Syntax.FunctionType,
+                params: params,
+                result: result
+            };
+            if (thisBinding) {
+                // avoid adding null 'new' and 'this' properties
+                fnType['this'] = thisBinding;
+                if (isNew) {
+                    fnType['new'] = true;
+                }
+            }
+            return fnType;
+        }
+
+        // BasicTypeExpression :=
+        //     '*'
+        //   | 'null'
+        //   | 'undefined'
+        //   | TypeName
+        //   | FunctionType
+        //   | UnionType
+        //   | RecordType
+        //   | ArrayType
+        function parseBasicTypeExpression() {
+            var context;
+            switch (token) {
+            case Token.STAR:
+                consume(Token.STAR);
+                return {
+                    type: Syntax.AllLiteral
+                };
+
+            case Token.LPAREN:
+                return parseUnionType();
+
+            case Token.LBRACK:
+                return parseArrayType();
+
+            case Token.LBRACE:
+                return parseRecordType();
+
+            case Token.NAME:
+                if (value === 'null') {
+                    consume(Token.NAME);
+                    return {
+                        type: Syntax.NullLiteral
+                    };
+                }
+
+                if (value === 'undefined') {
+                    consume(Token.NAME);
+                    return {
+                        type: Syntax.UndefinedLiteral
+                    };
+                }
+
+                context = Context.save();
+                if (value === 'function') {
+                    try {
+                        return parseFunctionType();
+                    } catch (e) {
+                        context.restore();
+                    }
+                }
+
+                return parseTypeName();
+
+            default:
+                throwError('unexpected token');
+            }
+        }
+
+        // TypeExpression :=
+        //     BasicTypeExpression
+        //   | '?' BasicTypeExpression
+        //   | '!' BasicTypeExpression
+        //   | BasicTypeExpression '?'
+        //   | BasicTypeExpression '!'
+        //   | '?'
+        //   | BasicTypeExpression '[]'
+        function parseTypeExpression() {
+            var expr;
+
+            if (token === Token.QUESTION) {
+                consume(Token.QUESTION);
+                if (token === Token.COMMA || token === Token.EQUAL || token === Token.RBRACE ||
+                        token === Token.RPAREN || token === Token.PIPE || token === Token.EOF ||
+                        token === Token.RBRACK) {
+                    return {
+                        type: Syntax.NullableLiteral
+                    };
+                }
+                return {
+                    type: Syntax.NullableType,
+                    expression: parseBasicTypeExpression(),
+                    prefix: true
+                };
+            }
+
+            if (token === Token.BANG) {
+                consume(Token.BANG);
+                return {
+                    type: Syntax.NonNullableType,
+                    expression: parseBasicTypeExpression(),
+                    prefix: true
+                };
+            }
+
+            expr = parseBasicTypeExpression();
+            if (token === Token.BANG) {
+                consume(Token.BANG);
+                return {
+                    type: Syntax.NonNullableType,
+                    expression: expr,
+                    prefix: false
+                };
+            }
+
+            if (token === Token.QUESTION) {
+                consume(Token.QUESTION);
+                return {
+                    type: Syntax.NullableType,
+                    expression: expr,
+                    prefix: false
+                };
+            }
+
+            if (token === Token.LBRACK) {
+                consume(Token.LBRACK);
+                consume(Token.RBRACK, 'expected an array-style type declaration (' + value + '[])');
+                return {
+                    type: Syntax.TypeApplication,
+                    expression: {
+                        type: Syntax.NameExpression,
+                        name: 'Array'
+                    },
+                    applications: [expr]
+                };
+            }
+
+            return expr;
+        }
+
+        // TopLevelTypeExpression :=
+        //      TypeExpression
+        //    | TypeUnionList
+        //
+        // This rule is Google Closure Compiler extension, not ES4
+        // like,
+        //   { number | string }
+        // If strict to ES4, we should write it as
+        //   { (number|string) }
+        function parseTop() {
+            var expr, elements;
+
+            expr = parseTypeExpression();
+            if (token !== Token.PIPE) {
+                return expr;
+            }
+
+            elements = [ expr ];
+            consume(Token.PIPE);
+            while (true) {
+                elements.push(parseTypeExpression());
+                if (token !== Token.PIPE) {
+                    break;
+                }
+                consume(Token.PIPE);
+            }
+
+            return {
+                type: Syntax.UnionType,
+                elements: elements
+            };
+        }
+
+        function parseTopParamType() {
+            var expr;
+
+            if (token === Token.REST) {
+                consume(Token.REST);
+                return {
+                    type: Syntax.RestType,
+                    expression: parseTop()
+                };
+            }
+
+            expr = parseTop();
+            if (token === Token.EQUAL) {
+                consume(Token.EQUAL);
+                return {
+                    type: Syntax.OptionalType,
+                    expression: expr
+                };
+            }
+
+            return expr;
+        }
+
+        function parseType(src, opt) {
+            var expr;
+
+            source = src;
+            length = source.length;
+            index = 0;
+            previous = 0;
+
+            if (!CanAccessStringByIndex) {
+                source = source.split('');
+            }
+
+            next();
+            expr = parseTop();
+
+            if (opt && opt.midstream) {
+                return {
+                    expression: expr,
+                    index: previous
+                };
+            }
+
+            if (token !== Token.EOF) {
+                throwError('not reach to EOF');
+            }
+
+            return expr;
+        }
+
+        function parseParamType(src, opt) {
+            var expr;
+
+            source = src;
+            length = source.length;
+            index = 0;
+            previous = 0;
+
+            if (!CanAccessStringByIndex) {
+                source = source.split('');
+            }
+
+            next();
+            expr = parseTopParamType();
+
+            if (opt && opt.midstream) {
+                return {
+                    expression: expr,
+                    index: previous
+                };
+            }
+
+            if (token !== Token.EOF) {
+                throwError('not reach to EOF');
+            }
+
+            return expr;
+        }
+
+        function stringifyImpl(node, compact, topLevel) {
+            var result, i, iz;
+
+            switch (node.type) {
+            case Syntax.NullableLiteral:
+                result = '?';
+                break;
+
+            case Syntax.AllLiteral:
+                result = '*';
+                break;
+
+            case Syntax.NullLiteral:
+                result = 'null';
+                break;
+
+            case Syntax.UndefinedLiteral:
+                result = 'undefined';
+                break;
+
+            case Syntax.VoidLiteral:
+                result = 'void';
+                break;
+
+            case Syntax.UnionType:
+                if (!topLevel) {
+                    result = '(';
+                } else {
+                    result = '';
+                }
+
+                for (i = 0, iz = node.elements.length; i < iz; ++i) {
+                    result += stringifyImpl(node.elements[i], compact);
+                    if ((i + 1) !== iz) {
+                        result += '|';
+                    }
+                }
+
+                if (!topLevel) {
+                    result += ')';
+                }
+                break;
+
+            case Syntax.ArrayType:
+                result = '[';
+                for (i = 0, iz = node.elements.length; i < iz; ++i) {
+                    result += stringifyImpl(node.elements[i], compact);
+                    if ((i + 1) !== iz) {
+                        result += compact ? ',' : ', ';
+                    }
+                }
+                result += ']';
+                break;
+
+            case Syntax.RecordType:
+                result = '{';
+                for (i = 0, iz = node.fields.length; i < iz; ++i) {
+                    result += stringifyImpl(node.fields[i], compact);
+                    if ((i + 1) !== iz) {
+                        result += compact ? ',' : ', ';
+                    }
+                }
+                result += '}';
+                break;
+
+            case Syntax.FieldType:
+                if (node.value) {
+                    result = node.key + (compact ? ':' : ': ') + stringifyImpl(node.value, compact);
+                } else {
+                    result = node.key;
+                }
+                break;
+
+            case Syntax.FunctionType:
+                result = compact ? 'function(' : 'function (';
+
+                if (node['this']) {
+                    if (node['new']) {
+                        result += (compact ? 'new:' : 'new: ');
+                    } else {
+                        result += (compact ? 'this:' : 'this: ');
+                    }
+
+                    result += stringifyImpl(node['this'], compact);
+
+                    if (node.params.length !== 0) {
+                        result += compact ? ',' : ', ';
+                    }
+                }
+
+                for (i = 0, iz = node.params.length; i < iz; ++i) {
+                    result += stringifyImpl(node.params[i], compact);
+                    if ((i + 1) !== iz) {
+                        result += compact ? ',' : ', ';
+                    }
+                }
+
+                result += ')';
+
+                if (node.result) {
+                    result += (compact ? ':' : ': ') + stringifyImpl(node.result, compact);
+                }
+                break;
+
+            case Syntax.ParameterType:
+                result = node.name + (compact ? ':' : ': ') + stringifyImpl(node.expression, compact);
+                break;
+
+            case Syntax.RestType:
+                result = '...';
+                if (node.expression) {
+                    result += stringifyImpl(node.expression, compact);
+                }
+                break;
+
+            case Syntax.NonNullableType:
+                if (node.prefix) {
+                    result = '!' + stringifyImpl(node.expression, compact);
+                } else {
+                    result = stringifyImpl(node.expression, compact) + '!';
+                }
+                break;
+
+            case Syntax.OptionalType:
+                result = stringifyImpl(node.expression, compact) + '=';
+                break;
+
+            case Syntax.NullableType:
+                if (node.prefix) {
+                    result = '?' + stringifyImpl(node.expression, compact);
+                } else {
+                    result = stringifyImpl(node.expression, compact) + '?';
+                }
+                break;
+
+            case Syntax.NameExpression:
+                result = node.name;
+                break;
+
+            case Syntax.TypeApplication:
+                result = stringifyImpl(node.expression, compact) + '.<';
+                for (i = 0, iz = node.applications.length; i < iz; ++i) {
+                    result += stringifyImpl(node.applications[i], compact);
+                    if ((i + 1) !== iz) {
+                        result += compact ? ',' : ', ';
+                    }
+                }
+                result += '>';
+                break;
+
+            default:
+                throwError('Unknown type ' + node.type);
+            }
+
+            return result;
+        }
+
+        function stringify(node, options) {
+            if (options == null) {
+                options = {};
+            }
+            return stringifyImpl(node, options.compact, options.topLevel);
+        }
+
+        exports.parseType = parseType;
+        exports.parseParamType = parseParamType;
+        exports.stringify = stringify;
+        exports.Syntax = Syntax;
+    }(typed = {}));
+
+    // JSDoc Tag Parser
+
+    (function (exports) {
+        var Rules,
+            index,
+            lineNumber,
+            length,
+            source,
+            recoverable,
+            sloppy,
+            strict;
+
+        function advance() {
+            var ch = source[index];
+            index += 1;
+            if (isLineTerminator(ch)) {
+                lineNumber += 1;
+            }
+            return ch;
+        }
+
+        function scanTitle() {
+            var title = '';
+            // waste '@'
+            advance();
+
+            while (index < length && isASCIIAlphanumeric(source[index])) {
+                title += advance();
+            }
+
+            return title;
+        }
+
+        function seekContent() {
+            var ch, waiting, last = index;
+
+            waiting = false;
+            while (last < length) {
+                ch = source[last];
+                if (isLineTerminator(ch)) {
+                    lineNumber += 1;
+                    waiting = true;
+                } else if (waiting) {
+                    if (ch === '@') {
+                        break;
+                    }
+                    if (!isWhiteSpace(ch)) {
+                        waiting = false;
+                    }
+                }
+                last += 1;
+            }
+            return last;
+        }
+
+        // type expression may have nest brace, such as,
+        // { { ok: string } }
+        //
+        // therefore, scanning type expression with balancing braces.
+        function parseType(title, last) {
+            var ch, brace, type, direct = false;
+
+            // search '{'
+            while (index < last) {
+                ch = source[index];
+                if (isWhiteSpace(ch)) {
+                    advance();
+                } else if (ch === '{') {
+                    advance();
+                    break;
+                } else {
+                    // this is direct pattern
+                    direct = true;
+                    break;
+                }
+            }
+
+            if (!direct) {
+                // type expression { is found
+                brace = 1;
+                type = '';
+                while (index < last) {
+                    ch = source[index];
+                    if (isLineTerminator(ch)) {
+                        advance();
+                    } else {
+                        if (ch === '}') {
+                            brace -= 1;
+                            if (brace === 0) {
+                                advance();
+                                break;
+                            }
+                        } else if (ch === '{') {
+                            brace += 1;
+                        }
+                        type += advance();
+                    }
+                }
+
+                if (brace !== 0) {
+                    // braces is not balanced
+                    return throwError('Braces are not balanced');
+                }
+
+                try {
+                    if (isParamTitle(title)) {
+                        return typed.parseParamType(type);
+                    }
+                    return typed.parseType(type);
+                } catch (e1) {
+                    // parse failed
+                    return null;
+                }
+            } else {
+                return null;
+            }
+        }
+
+        function scanIdentifier(last) {
+            var identifier;
+            if (!isIdentifierStart(source[index])) {
+                return null;
+            }
+            identifier = advance();
+            while (index < last && isIdentifierPart(source[index])) {
+                identifier += advance();
+            }
+            return identifier;
+        }
+
+        function skipWhiteSpace(last) {
+            while (index < last && (isWhiteSpace(source[index]) || isLineTerminator(source[index]))) {
+                advance();
+            }
+        }
+
+        function parseName(last, allowBrackets, allowNestedParams) {
+            var name = '', useBrackets;
+
+            skipWhiteSpace(last);
+
+            if (index >= last) {
+                return null;
+            }
+
+            if (allowBrackets && source[index] === '[') {
+                useBrackets = true;
+                name = advance();
+            }
+
+            if (!isIdentifierStart(source[index])) {
+                return null;
+            }
+
+            name += scanIdentifier(last);
+
+            if (allowNestedParams) {
+                while (source[index] === '.') {
+                    name += '.';
+                    index += 1;
+                    name += scanIdentifier(last);
+                }
+            }
+
+            if (useBrackets) {
+                // do we have a default value for this?
+                if (source[index] === '=') {
+
+                    // consume the '='' symbol
+                    name += advance();
+                    // scan in the default value
+                    while (index < last && source[index] !== ']') {
+                        name += advance();
+                    }
+                }
+
+                if (index >= last  || source[index] !== ']') {
+                    // we never found a closing ']'
+                    return null;
+                }
+
+                // collect the last ']'
+                name += advance();
+            }
+
+            return name;
+        }
+
+        function skipToTag() {
+            while (index < length && source[index] !== '@') {
+                advance();
+            }
+            if (index >= length) {
+                return false;
+            }
+            assert(source[index] === '@');
+            return true;
+        }
+
+        function TagParser(options, title) {
+            this._options = options;
+            this._title = title;
+            this._tag = {
+                title: title,
+                description: null
+            };
+            if (this._options.lineNumbers) {
+                this._tag.lineNumber = lineNumber;
+            }
+            this._last = 0;
+            // space to save special information for title parsers.
+            this._extra = { };
+        }
+
+        // addError(err, ...)
+        TagParser.prototype.addError = function addError(errorText) {
+            var args = Array.prototype.slice.call(arguments, 1),
+                msg = errorText.replace(
+                    /%(\d)/g,
+                    function (whole, index) {
+                        assert(index < args.length, 'Message reference must be in range');
+                        return args[index];
+                    }
+                );
+
+            if (!this._tag.errors) {
+                this._tag.errors = [];
+            }
+            if (strict) {
+                throwError(msg);
+            }
+            this._tag.errors.push(msg);
+            return recoverable;
+        };
+
+        TagParser.prototype.parseType = function () {
+            // type required titles
+            if (isTypeParameterRequired(this._title)) {
+                try {
+                    this._tag.type = parseType(this._title, this._last);
+                    if (!this._tag.type) {
+                        if (!isParamTitle(this._title)) {
+                            if (!this.addError('Missing or invalid tag type')) {
+                                return false;
+                            }
+                        }
+                    }
+                } catch (error) {
+                    this._tag.type = null;
+                    if (!this.addError(error.message)) {
+                        return false;
+                    }
+                }
+            } else if (isAllowedType(this._title)) {
+                // optional types
+                try {
+                    this._tag.type = parseType(this._title, this._last);
+                } catch (e) {
+                    //For optional types, lets drop the thrown error when we hit the end of the file
+                }
+            }
+            return true;
+        };
+
+        TagParser.prototype._parseNamePath = function (optional) {
+            var name;
+            name = parseName(this._last, sloppy && isParamTitle(this._title), true);
+            if (!name) {
+                if (!optional) {
+                    if (!this.addError('Missing or invalid tag name')) {
+                        return false;
+                    }
+                }
+            }
+            this._tag.name = name;
+            return true;
+        };
+
+        TagParser.prototype.parseNamePath = function () {
+            return this._parseNamePath(false);
+        };
+
+        TagParser.prototype.parseNamePathOptional = function () {
+            return this._parseNamePath(true);
+        };
+
+
+        TagParser.prototype.parseName = function () {
+            var assign, name;
+
+            // param, property requires name
+            if (isAllowedName(this._title)) {
+                this._tag.name = parseName(this._last, sloppy && isParamTitle(this._title), isAllowedNested(this._title));
+                if (!this._tag.name) {
+                    if (!isNameParameterRequired(this._title)) {
+                        return true;
+                    }
+
+                    // it's possible the name has already been parsed but interpreted as a type
+                    // it's also possible this is a sloppy declaration, in which case it will be
+                    // fixed at the end
+                    if (isParamTitle(this._title) && this._tag.type.name) {
+                        this._extra.name = this._tag.type;
+                        this._tag.name = this._tag.type.name;
+                        this._tag.type = null;
+                    } else {
+                        if (!this.addError('Missing or invalid tag name')) {
+                            return false;
+                        }
+                    }
+                } else {
+                    name = this._tag.name;
+                    if (name.charAt(0) === '[' && name.charAt(name.length - 1) === ']') {
+                        // extract the default value if there is one
+                        // example: @param {string} [somebody=John Doe] description
+                        assign = name.substring(1, name.length - 1).split('=');
+                        if (assign[1]) {
+                            this._tag['default'] = assign[1];
+                        }
+                        this._tag.name = assign[0];
+
+                        // convert to an optional type
+                        if (this._tag.type.type !== 'OptionalType') {
+                            this._tag.type = {
+                                type: 'OptionalType',
+                                expression: this._tag.type
+                            };
+                        }
+                    }
+                }
+            }
+
+            return true;
+        };
+
+        TagParser.prototype.parseDescription = function parseDescription() {
+            var description = trim(sliceSource(source, index, this._last));
+            if (description) {
+                if ((/^-\s+/).test(description)) {
+                    description = description.substring(2);
+                }
+                this._tag.description = description;
+            }
+            return true;
+        };
+
+        TagParser.prototype.parseKind = function parseKind() {
+            var kind, kinds;
+            kinds = {
+                'class': true,
+                'constant': true,
+                'event': true,
+                'external': true,
+                'file': true,
+                'function': true,
+                'member': true,
+                'mixin': true,
+                'module': true,
+                'namespace': true,
+                'typedef': true
+            };
+            kind = trim(sliceSource(source, index, this._last));
+            this._tag.kind = kind;
+            if (!hasOwnProperty(kinds, kind)) {
+                if (!this.addError('Invalid kind name \'%0\'', kind)) {
+                    return false;
+                }
+            }
+            return true;
+        };
+
+        TagParser.prototype.parseAccess = function parseAccess() {
+            var access;
+            access = trim(sliceSource(source, index, this._last));
+            this._tag.access = access;
+            if (access !== 'private' && access !== 'protected' && access !== 'public') {
+                if (!this.addError('Invalid access name \'%0\'', access)) {
+                    return false;
+                }
+            }
+            return true;
+        };
+
+        TagParser.prototype.parseVariation = function parseVariation() {
+            var variation, text;
+            text = trim(sliceSource(source, index, this._last));
+            variation = parseFloat(text, 10);
+            this._tag.variation = variation;
+            if (isNaN(variation)) {
+                if (!this.addError('Invalid variation \'%0\'', text)) {
+                    return false;
+                }
+            }
+            return true;
+        };
+
+        TagParser.prototype.ensureEnd = function () {
+            var shouldBeEmpty = trim(sliceSource(source, index, this._last));
+            if (shouldBeEmpty) {
+                if (!this.addError('Unknown content \'%0\'', shouldBeEmpty)) {
+                    return false;
+                }
+            }
+            return true;
+        };
+
+        TagParser.prototype.epilogue = function epilogue() {
+            var description;
+
+            description = this._tag.description;
+            // un-fix potentially sloppy declaration
+            if (isParamTitle(this._title) && !this._tag.type && description && description.charAt(0) === '[') {
+                this._tag.type = this._extra.name;
+                this._tag.name = undefined;
+
+                if (!sloppy) {
+                    if (!this.addError('Missing or invalid tag name')) {
+                        return false;
+                    }
+                }
+            }
+
+            return true;
+        };
+
+        Rules = {
+            // http://usejsdoc.org/tags-access.html
+            'access': ['parseAccess'],
+            // http://usejsdoc.org/tags-alias.html
+            'alias': ['parseNamePath', 'ensureEnd'],
+            // http://usejsdoc.org/tags-augments.html
+            'augments': ['parseType', 'parseNamePathOptional', 'ensureEnd'],
+            // http://usejsdoc.org/tags-constructor.html
+            'constructor': ['parseType', 'parseNamePathOptional', 'ensureEnd'],
+            // Synonym: http://usejsdoc.org/tags-constructor.html
+            'class': ['parseType', 'parseNamePathOptional', 'ensureEnd'],
+            // Synonym: http://usejsdoc.org/tags-extends.html
+            'extends': ['parseType', 'parseNamePathOptional', 'ensureEnd'],
+            // http://usejsdoc.org/tags-deprecated.html
+            'deprecated': ['parseDescription'],
+            // http://usejsdoc.org/tags-global.html
+            'global': ['ensureEnd'],
+            // http://usejsdoc.org/tags-inner.html
+            'inner': ['ensureEnd'],
+            // http://usejsdoc.org/tags-instance.html
+            'instance': ['ensureEnd'],
+            // http://usejsdoc.org/tags-kind.html
+            'kind': ['parseKind'],
+            // http://usejsdoc.org/tags-mixes.html
+            'mixes': ['parseNamePath', 'ensureEnd'],
+            // http://usejsdoc.org/tags-mixin.html
+            'mixin': ['parseNamePathOptional', 'ensureEnd'],
+            // http://usejsdoc.org/tags-member.html
+            'member': ['parseType', 'parseNamePathOptional', 'ensureEnd'],
+            // http://usejsdoc.org/tags-method.html
+            'method': ['parseNamePathOptional', 'ensureEnd'],
+            // http://usejsdoc.org/tags-module.html
+            'module': ['parseType', 'parseNamePathOptional', 'ensureEnd'],
+            // Synonym: http://usejsdoc.org/tags-method.html
+            'func': ['parseNamePathOptional', 'ensureEnd'],
+            // Synonym: http://usejsdoc.org/tags-method.html
+            'function': ['parseNamePathOptional', 'ensureEnd'],
+            // Synonym: http://usejsdoc.org/tags-member.html
+            'var': ['parseType', 'parseNamePathOptional', 'ensureEnd'],
+            // http://usejsdoc.org/tags-name.html
+            'name': ['parseNamePath', 'ensureEnd'],
+            // http://usejsdoc.org/tags-namespace.html
+            'namespace': ['parseType', 'parseNamePathOptional', 'ensureEnd'],
+            // http://usejsdoc.org/tags-private.html
+            'private': ['parseType', 'parseDescription'],
+            // http://usejsdoc.org/tags-protected.html
+            'protected': ['parseType', 'parseDescription'],
+            // http://usejsdoc.org/tags-public.html
+            'public': ['parseType', 'parseDescription'],
+            // http://usejsdoc.org/tags-readonly.html
+            'readonly': ['ensureEnd'],
+            // http://usejsdoc.org/tags-requires.html
+            'requires': ['parseNamePath', 'ensureEnd'],
+            // http://usejsdoc.org/tags-since.html
+            'since': ['parseDescription'],
+            // http://usejsdoc.org/tags-static.html
+            'static': ['ensureEnd'],
+            // http://usejsdoc.org/tags-summary.html
+            'summary': ['parseDescription'],
+            // http://usejsdoc.org/tags-this.html
+            'this': ['parseNamePath', 'ensureEnd'],
+            // http://usejsdoc.org/tags-todo.html
+            'todo': ['parseDescription'],
+            // http://usejsdoc.org/tags-variation.html
+            'variation': ['parseVariation'],
+            // http://usejsdoc.org/tags-version.html
+            'version': ['parseDescription']
+        };
+
+        TagParser.prototype.parse = function parse() {
+            var i, iz, sequences, method;
+
+            // empty title
+            if (!this._title) {
+                if (!this.addError('Missing or invalid title')) {
+                    return null;
+                }
+            }
+
+            // Seek to content last index.
+            this._last = seekContent(this._title);
+
+            if (hasOwnProperty(Rules, this._title)) {
+                sequences = Rules[this._title];
+            } else {
+                // default sequences
+                sequences = ['parseType', 'parseName', 'parseDescription', 'epilogue'];
+            }
+
+            for (i = 0, iz = sequences.length; i < iz; ++i) {
+                method = sequences[i];
+                if (!this[method]()) {
+                    return null;
+                }
+            }
+
+            // Seek global index to end of this tag.
+            index = this._last;
+            return this._tag;
+        };
+
+        function parseTag(options) {
+            var title, parser;
+
+            // skip to tag
+            if (!skipToTag()) {
+                return null;
+            }
+
+            // scan title
+            title = scanTitle();
+
+            // construct tag parser
+            parser = new TagParser(options, title);
+            return parser.parse();
+        }
+
+        //
+        // Parse JSDoc
+        //
+
+        function scanJSDocDescription() {
+            var description = '', ch, atAllowed;
+
+            atAllowed = true;
+            while (index < length) {
+                ch = source[index];
+
+                if (atAllowed && ch === '@') {
+                    break;
+                }
+
+                if (isLineTerminator(ch)) {
+                    atAllowed = true;
+                } else if (atAllowed && !isWhiteSpace(ch)) {
+                    atAllowed = false;
+                }
+
+                description += advance();
+            }
+            return trim(description);
+        }
+
+        function parse(comment, options) {
+            var tags = [], tag, description, interestingTags, i, iz;
+
+            if (options === undefined) {
+                options = {};
+            }
+
+            if (typeof options.unwrap === 'boolean' && options.unwrap) {
+                source = unwrapComment(comment);
+            } else {
+                source = comment;
+            }
+
+            // array of relevant tags
+            if (options.tags) {
+                if (isArray(options.tags)) {
+                    interestingTags = { };
+                    for (i = 0, iz = options.tags.length; i < iz; i++) {
+                        if (typeof options.tags[i] === 'string') {
+                            interestingTags[options.tags[i]] = true;
+                        } else {
+                            throwError('Invalid "tags" parameter: ' + options.tags);
+                        }
+                    }
+                } else {
+                    throwError('Invalid "tags" parameter: ' + options.tags);
+                }
+            }
+
+            if (!CanAccessStringByIndex) {
+                source = source.split('');
+            }
+
+            length = source.length;
+            index = 0;
+            lineNumber = 0;
+            recoverable = options.recoverable;
+            sloppy = options.sloppy;
+            strict = options.strict;
+
+            description = scanJSDocDescription();
+
+            while (true) {
+                tag = parseTag(options);
+                if (!tag) {
+                    break;
+                }
+                if (!interestingTags || interestingTags.hasOwnProperty(tag.title)) {
+                    tags.push(tag);
+                }
+            }
+
+            return {
+                description: description,
+                tags: tags
+            };
+        }
+        exports.parse = parse;
+    }(jsdoc = {}));
+
+    exports.version = VERSION;
+    exports.parse = jsdoc.parse;
+    exports.parseType = typed.parseType;
+    exports.parseParamType = typed.parseParamType;
+    exports.unwrapComment = unwrapComment;
+    exports.Syntax = shallowCopy(typed.Syntax);
+    exports.Error = DoctrineError;
+    exports.type = {
+        Syntax: exports.Syntax,
+        parseType: typed.parseType,
+        parseParamType: typed.parseParamType,
+        stringify: typed.stringify
+    };
+}(typeof exports === 'undefined' ? (doctrine = {}) : exports));
+/* vim: set sw=4 ts=4 et tw=80 : */
+
+},{}],5:[function(require,module,exports){
+/*
+  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>
+  Copyright (C) 2013 Alex Seville <hi@alexanderseville.com>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/**
+ * Escope (<a href="http://github.com/Constellation/escope">escope</a>) is an <a
+ * href="http://www.ecma-international.org/publications/standards/Ecma-262.htm">ECMAScript</a>
+ * scope analyzer extracted from the <a
+ * href="http://github.com/Constellation/esmangle">esmangle project</a/>.
+ * <p>
+ * <em>escope</em> finds lexical scopes in a source program, i.e. areas of that
+ * program where different occurrences of the same identifier refer to the same
+ * variable. With each scope the contained variables are collected, and each
+ * identifier reference in code is linked to its corresponding variable (if
+ * possible).
+ * <p>
+ * <em>escope</em> works on a syntax tree of the parsed source code which has
+ * to adhere to the <a
+ * href="https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API">
+ * Mozilla Parser API</a>. E.g. <a href="http://esprima.org">esprima</a> is a parser
+ * that produces such syntax trees.
+ * <p>
+ * The main interface is the {@link analyze} function.
+ * @module
+ */
+
+/*jslint bitwise:true */
+/*global exports:true, define:true, require:true*/
+(function (factory, global) {
+    'use strict';
+
+    function namespace(str, obj) {
+        var i, iz, names, name;
+        names = str.split('.');
+        for (i = 0, iz = names.length; i < iz; ++i) {
+            name = names[i];
+            if (obj.hasOwnProperty(name)) {
+                obj = obj[name];
+            } else {
+                obj = (obj[name] = {});
+            }
+        }
+        return obj;
+    }
+
+    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
+    // and plain browser loading,
+    if (typeof define === 'function' && define.amd) {
+        define('escope', ['exports', 'estraverse'], function (exports, estraverse) {
+            factory(exports, global, estraverse);
+        });
+    } else if (typeof exports !== 'undefined') {
+        factory(exports, global, require('estraverse'));
+    } else {
+        factory(namespace('escope', global), global, global.estraverse);
+    }
+}(function (exports, global, estraverse) {
+    'use strict';
+
+    var Syntax,
+        Map,
+        currentScope,
+        globalScope,
+        scopes,
+        options;
+
+    Syntax = estraverse.Syntax;
+
+    if (typeof global.Map !== 'undefined') {
+        // ES6 Map
+        Map = global.Map;
+    } else {
+        Map = function Map() {
+            this.__data = {};
+        };
+
+        Map.prototype.get = function MapGet(key) {
+            key = '$' + key;
+            if (this.__data.hasOwnProperty(key)) {
+                return this.__data[key];
+            }
+            return undefined;
+        };
+
+        Map.prototype.has = function MapHas(key) {
+            key = '$' + key;
+            return this.__data.hasOwnProperty(key);
+        };
+
+        Map.prototype.set = function MapSet(key, val) {
+            key = '$' + key;
+            this.__data[key] = val;
+        };
+
+        Map.prototype['delete'] = function MapDelete(key) {
+            key = '$' + key;
+            return delete this.__data[key];
+        };
+    }
+
+    function assert(cond, text) {
+        if (!cond) {
+            throw new Error(text);
+        }
+    }
+
+    function defaultOptions() {
+        return {
+            optimistic: false,
+            directive: false
+        };
+    }
+
+    function updateDeeply(target, override) {
+        var key, val;
+
+        function isHashObject(target) {
+            return typeof target === 'object' && target instanceof Object && !(target instanceof RegExp);
+        }
+
+        for (key in override) {
+            if (override.hasOwnProperty(key)) {
+                val = override[key];
+                if (isHashObject(val)) {
+                    if (isHashObject(target[key])) {
+                        updateDeeply(target[key], val);
+                    } else {
+                        target[key] = updateDeeply({}, val);
+                    }
+                } else {
+                    target[key] = val;
+                }
+            }
+        }
+        return target;
+    }
+
+    /**
+     * A Reference represents a single occurrence of an identifier in code.
+     * @class Reference
+     */
+    function Reference(ident, scope, flag, writeExpr, maybeImplicitGlobal) {
+        /** 
+         * Identifier syntax node.
+         * @member {esprima#Identifier} Reference#identifier 
+         */
+        this.identifier = ident;
+        /** 
+         * Reference to the enclosing Scope.
+         * @member {Scope} Reference#from 
+         */
+        this.from = scope;
+        /**
+         * Whether the reference comes from a dynamic scope (such as 'eval',
+         * 'with', etc.), and may be trapped by dynamic scopes.
+         * @member {boolean} Reference#tainted
+         */
+        this.tainted = false;
+        /** 
+         * The variable this reference is resolved with.
+         * @member {Variable} Reference#resolved 
+         */
+        this.resolved = null;
+        /** 
+         * The read-write mode of the reference. (Value is one of {@link
+         * Reference.READ}, {@link Reference.RW}, {@link Reference.WRITE}).
+         * @member {number} Reference#flag 
+         * @private
+         */
+        this.flag = flag;
+        if (this.isWrite()) {
+            /** 
+             * If reference is writeable, this is the tree being written to it.
+             * @member {esprima#Node} Reference#writeExpr 
+             */
+            this.writeExpr = writeExpr;
+        }
+        /** 
+         * Whether the Reference might refer to a global variable.
+         * @member {boolean} Reference#__maybeImplicitGlobal 
+         * @private
+         */
+        this.__maybeImplicitGlobal = maybeImplicitGlobal;
+    }
+
+    /** 
+     * @constant Reference.READ 
+     * @private
+     */
+    Reference.READ = 0x1;
+    /** 
+     * @constant Reference.WRITE 
+     * @private
+     */
+    Reference.WRITE = 0x2;
+    /** 
+     * @constant Reference.RW 
+     * @private
+     */
+    Reference.RW = 0x3;
+
+    /**
+     * Whether the reference is static.
+     * @method Reference#isStatic
+     * @return {boolean}
+     */
+    Reference.prototype.isStatic = function isStatic() {
+        return !this.tainted && this.resolved && this.resolved.scope.isStatic();
+    };
+
+    /**
+     * Whether the reference is writeable.
+     * @method Reference#isWrite
+     * @return {boolean}
+     */
+    Reference.prototype.isWrite = function isWrite() {
+        return this.flag & Reference.WRITE;
+    };
+
+    /**
+     * Whether the reference is readable.
+     * @method Reference#isRead
+     * @return {boolean}
+     */
+    Reference.prototype.isRead = function isRead() {
+        return this.flag & Reference.READ;
+    };
+
+    /**
+     * Whether the reference is read-only.
+     * @method Reference#isReadOnly
+     * @return {boolean}
+     */
+    Reference.prototype.isReadOnly = function isReadOnly() {
+        return this.flag === Reference.READ;
+    };
+
+    /**
+     * Whether the reference is write-only.
+     * @method Reference#isWriteOnly
+     * @return {boolean}
+     */
+    Reference.prototype.isWriteOnly = function isWriteOnly() {
+        return this.flag === Reference.WRITE;
+    };
+
+    /**
+     * Whether the reference is read-write.
+     * @method Reference#isReadWrite
+     * @return {boolean}
+     */
+    Reference.prototype.isReadWrite = function isReadWrite() {
+        return this.flag === Reference.RW;
+    };
+
+    /**
+     * A Variable represents a locally scoped identifier. These include arguments to
+     * functions.
+     * @class Variable
+     */
+    function Variable(name, scope) {
+        /**  
+         * The variable name, as given in the source code.
+         * @member {String} Variable#name 
+         */
+        this.name = name;
+        /**
+         * List of defining occurrences of this variable (like in 'var ...'
+         * statements or as parameter), as AST nodes.
+         * @member {esprima.Identifier[]} Variable#identifiers
+         */
+        this.identifiers = [];
+        /**
+         * List of {@link Reference|references} of this variable (excluding parameter entries)
+         * in its defining scope and all nested scopes. For defining
+         * occurrences only see {@link Variable#defs}.
+         * @member {Reference[]} Variable#references
+         */
+        this.references = [];
+
+        /**
+         * List of defining occurrences of this variable (like in 'var ...'
+         * statements or as parameter), as custom objects.
+         * @typedef {Object} DefEntry
+         * @property {String} DefEntry.type - the type of the occurrence (e.g.
+         *      "Parameter", "Variable", ...)
+         * @property {esprima.Identifier} DefEntry.name - the identifier AST node of the occurrence
+         * @property {esprima.Node} DefEntry.node - the enclosing node of the
+         *      identifier
+         * @property {esprima.Node} [DefEntry.parent] - the enclosing statement
+         *      node of the identifier
+         * @member {DefEntry[]} Variable#defs
+         */
+        this.defs = [];
+
+        this.tainted = false;
+        /**
+         * Whether this is a stack variable.
+         * @member {boolean} Variable#stack
+         */
+        this.stack = true;
+        /** 
+         * Reference to the enclosing Scope.
+         * @member {Scope} Variable#scope 
+         */
+        this.scope = scope;
+    }
+
+    Variable.CatchClause = 'CatchClause';
+    Variable.Parameter = 'Parameter';
+    Variable.FunctionName = 'FunctionName';
+    Variable.Variable = 'Variable';
+    Variable.ImplicitGlobalVariable = 'ImplicitGlobalVariable';
+
+    function isStrictScope(scope, block) {
+        var body, i, iz, stmt, expr;
+
+        // When upper scope is exists and strict, inner scope is also strict.
+        if (scope.upper && scope.upper.isStrict) {
+            return true;
+        }
+
+        if (scope.type === 'function') {
+            body = block.body;
+        } else if (scope.type === 'global') {
+            body = block;
+        } else {
+            return false;
+        }
+
+        if (options.directive) {
+            for (i = 0, iz = body.body.length; i < iz; ++i) {
+                stmt = body.body[i];
+                if (stmt.type !== 'DirectiveStatement') {
+                    break;
+                }
+                if (stmt.raw === '"use strict"' || stmt.raw === '\'use strict\'') {
+                    return true;
+                }
+            }
+        } else {
+            for (i = 0, iz = body.body.length; i < iz; ++i) {
+                stmt = body.body[i];
+                if (stmt.type !== Syntax.ExpressionStatement) {
+                    break;
+                }
+                expr = stmt.expression;
+                if (expr.type !== Syntax.Literal || typeof expr.value !== 'string') {
+                    break;
+                }
+                if (expr.raw != null) {
+                    if (expr.raw === '"use strict"' || expr.raw === '\'use strict\'') {
+                        return true;
+                    }
+                } else {
+                    if (expr.value === 'use strict') {
+                        return true;
+                    }
+                }
+            }
+        }
+        return false;
+    }
+
+    /**
+     * @class Scope
+     */
+    function Scope(block, opt) {
+        var variable, body;
+
+        /**
+         * One of 'catch', 'with', 'function' or 'global'.
+         * @member {String} Scope#type
+         */
+        this.type =
+            (block.type === Syntax.CatchClause) ? 'catch' :
+            (block.type === Syntax.WithStatement) ? 'with' :
+            (block.type === Syntax.Program) ? 'global' : 'function';
+         /**
+         * The scoped {@link Variable}s of this scope, as <code>{ Variable.name
+         * : Variable }</code>.
+         * @member {Map} Scope#set
+         */
+        this.set = new Map();
+        /**
+         * The tainted variables of this scope, as <code>{ Variable.name :
+         * boolean }</code>.
+         * @member {Map} Scope#taints */
+        this.taints = new Map();
+        /**
+         * Generally, through the lexical scoping of JS you can always know
+         * which variable an identifier in the source code refers to. There are
+         * a few exceptions to this rule. With 'global' and 'with' scopes you
+         * can only decide at runtime which variable a reference refers to.
+         * Moreover, if 'eval()' is used in a scope, it might introduce new
+         * bindings in this or its prarent scopes.
+         * All those scopes are considered 'dynamic'.
+         * @member {boolean} Scope#dynamic
+         */
+        this.dynamic = this.type === 'global' || this.type === 'with';
+        /**
+         * A reference to the scope-defining syntax node.
+         * @member {esprima.Node} Scope#block
+         */
+        this.block = block;
+         /**
+         * The {@link Reference|references} that are not resolved with this scope.
+         * @member {Reference[]} Scope#through
+         */
+        this.through = [];
+         /**
+         * The scoped {@link Variable}s of this scope. In the case of a
+         * 'function' scope this includes the automatic argument <em>arguments</em> as
+         * its first element, as well as all further formal arguments.
+         * @member {Variable[]} Scope#variables
+         */
+        this.variables = [];
+         /**
+         * Any variable {@link Reference|reference} found in this scope. This
+         * includes occurrences of local variables as well as variables from
+         * parent scopes (including the global scope). For local variables
+         * this also includes defining occurrences (like in a 'var' statement).
+         * In a 'function' scope this does not include the occurrences of the
+         * formal parameter in the parameter list.
+         * @member {Reference[]} Scope#references
+         */
+        this.references = [];
+         /**
+         * List of {@link Reference}s that are left to be resolved (i.e. which
+         * need to be linked to the variable they refer to). Used internally to
+         * resolve bindings during scope analysis. On a finalized scope
+         * analysis, all sopes have <em>left</em> value <strong>null</strong>.
+         * @member {Reference[]} Scope#left
+         */
+        this.left = [];
+         /**
+         * For 'global' and 'function' scopes, this is a self-reference. For
+         * other scope types this is the <em>variableScope</em> value of the
+         * parent scope.
+         * @member {Scope} Scope#variableScope
+         */
+        this.variableScope =
+            (this.type === 'global' || this.type === 'function') ? this : currentScope.variableScope;
+         /**
+         * Whether this scope is created by a FunctionExpression.
+         * @member {boolean} Scope#functionExpressionScope
+         */
+        this.functionExpressionScope = false;
+         /**
+         * Whether this is a scope that contains an 'eval()' invocation.
+         * @member {boolean} Scope#directCallToEvalScope
+         */
+        this.directCallToEvalScope = false;
+         /**
+         * @member {boolean} Scope#thisFound
+         */
+        this.thisFound = false;
+        body = this.type === 'function' ? block.body : block;
+        if (opt.naming) {
+            this.__define(block.id, {
+                type: Variable.FunctionName,
+                name: block.id,
+                node: block
+            });
+            this.functionExpressionScope = true;
+        } else {
+            if (this.type === 'function') {
+                variable = new Variable('arguments', this);
+                this.taints.set('arguments', true);
+                this.set.set('arguments', variable);
+                this.variables.push(variable);
+            }
+
+            if (block.type === Syntax.FunctionExpression && block.id) {
+                new Scope(block, { naming: true });
+            }
+        }
+
+         /**
+         * Reference to the parent {@link Scope|scope}.
+         * @member {Scope} Scope#upper
+         */
+        this.upper = currentScope;
+         /**
+         * Whether 'use strict' is in effect in this scope.
+         * @member {boolean} Scope#isStrict
+         */
+        this.isStrict = isStrictScope(this, block);
+
+         /**
+         * List of nested {@link Scope}s.
+         * @member {Scope[]} Scope#childScopes
+         */
+        this.childScopes = [];
+        if (currentScope) {
+            currentScope.childScopes.push(this);
+        }
+
+
+        // RAII
+        currentScope = this;
+        if (this.type === 'global') {
+            globalScope = this;
+            globalScope.implicit = {
+                set: new Map(),
+                variables: []
+            };
+        }
+        scopes.push(this);
+    }
+
+    Scope.prototype.__close = function __close() {
+        var i, iz, ref, current, node, implicit;
+
+        // Because if this is global environment, upper is null
+        if (!this.dynamic || options.optimistic) {
+            // static resolve
+            for (i = 0, iz = this.left.length; i < iz; ++i) {
+                ref = this.left[i];
+                if (!this.__resolve(ref)) {
+                    this.__delegateToUpperScope(ref);
+                }
+            }
+        } else {
+            // this is "global" / "with" / "function with eval" environment
+            if (this.type === 'with') {
+                for (i = 0, iz = this.left.length; i < iz; ++i) {
+                    ref = this.left[i];
+                    ref.tainted = true;
+                    this.__delegateToUpperScope(ref);
+                }
+            } else {
+                for (i = 0, iz = this.left.length; i < iz; ++i) {
+                    // notify all names are through to global
+                    ref = this.left[i];
+                    current = this;
+                    do {
+                        current.through.push(ref);
+                        current = current.upper;
+                    } while (current);
+                }
+            }
+        }
+
+        if (this.type === 'global') {
+            implicit = [];
+            for (i = 0, iz = this.left.length; i < iz; ++i) {
+                ref = this.left[i];
+                if (ref.__maybeImplicitGlobal && !this.set.has(ref.identifier.name)) {
+                    implicit.push(ref.__maybeImplicitGlobal);
+                }
+            }
+
+            // create an implicit global variable from assignment expression
+            for (i = 0, iz = implicit.length; i < iz; ++i) {
+                node = implicit[i];
+                this.__defineImplicit(node.left, {
+                    type: Variable.ImplicitGlobalVariable,
+                    name: node.left,
+                    node: node
+                });
+            }
+        }
+
+        this.left = null;
+        currentScope = this.upper;
+    };
+
+    Scope.prototype.__resolve = function __resolve(ref) {
+        var variable, name;
+        name = ref.identifier.name;
+        if (this.set.has(name)) {
+            variable = this.set.get(name);
+            variable.references.push(ref);
+            variable.stack = variable.stack && ref.from.variableScope === this.variableScope;
+            if (ref.tainted) {
+                variable.tainted = true;
+                this.taints.set(variable.name, true);
+            }
+            ref.resolved = variable;
+            return true;
+        }
+        return false;
+    };
+
+    Scope.prototype.__delegateToUpperScope = function __delegateToUpperScope(ref) {
+        if (this.upper) {
+            this.upper.left.push(ref);
+        }
+        this.through.push(ref);
+    };
+
+    Scope.prototype.__defineImplicit = function __defineImplicit(node, info) {
+        var name, variable;
+        if (node && node.type === Syntax.Identifier) {
+            name = node.name;
+            if (!this.implicit.set.has(name)) {
+                variable = new Variable(name, this);
+                variable.identifiers.push(node);
+                variable.defs.push(info);
+                this.implicit.set.set(name, variable);
+                this.implicit.variables.push(variable);
+            } else {
+                variable = this.implicit.set.get(name);
+                variable.identifiers.push(node);
+                variable.defs.push(info);
+            }
+        }
+    };
+
+    Scope.prototype.__define = function __define(node, info) {
+        var name, variable;
+        if (node && node.type === Syntax.Identifier) {
+            name = node.name;
+            if (!this.set.has(name)) {
+                variable = new Variable(name, this);
+                variable.identifiers.push(node);
+                variable.defs.push(info);
+                this.set.set(name, variable);
+                this.variables.push(variable);
+            } else {
+                variable = this.set.get(name);
+                variable.identifiers.push(node);
+                variable.defs.push(info);
+            }
+        }
+    };
+
+    Scope.prototype.__referencing = function __referencing(node, assign, writeExpr, maybeImplicitGlobal) {
+        var ref;
+        // because Array element may be null
+        if (node && node.type === Syntax.Identifier) {
+            ref = new Reference(node, this, assign || Reference.READ, writeExpr, maybeImplicitGlobal);
+            this.references.push(ref);
+            this.left.push(ref);
+        }
+    };
+
+    Scope.prototype.__detectEval = function __detectEval() {
+        var current;
+        current = this;
+        this.directCallToEvalScope = true;
+        do {
+            current.dynamic = true;
+            current = current.upper;
+        } while (current);
+    };
+
+    Scope.prototype.__detectThis = function __detectThis() {
+        this.thisFound = true;
+    };
+
+    Scope.prototype.__isClosed = function isClosed() {
+        return this.left === null;
+    };
+
+    // API Scope#resolve(name)
+    // returns resolved reference
+    Scope.prototype.resolve = function resolve(ident) {
+        var ref, i, iz;
+        assert(this.__isClosed(), 'scope should be closed');
+        assert(ident.type === Syntax.Identifier, 'target should be identifier');
+        for (i = 0, iz = this.references.length; i < iz; ++i) {
+            ref = this.references[i];
+            if (ref.identifier === ident) {
+                return ref;
+            }
+        }
+        return null;
+    };
+
+    // API Scope#isStatic
+    // returns this scope is static
+    Scope.prototype.isStatic = function isStatic() {
+        return !this.dynamic;
+    };
+
+    // API Scope#isArgumentsMaterialized
+    // return this scope has materialized arguments
+    Scope.prototype.isArgumentsMaterialized = function isArgumentsMaterialized() {
+        // TODO(Constellation)
+        // We can more aggressive on this condition like this.
+        //
+        // function t() {
+        //     // arguments of t is always hidden.
+        //     function arguments() {
+        //     }
+        // }
+        var variable;
+
+        // This is not function scope
+        if (this.type !== 'function') {
+            return true;
+        }
+
+        if (!this.isStatic()) {
+            return true;
+        }
+
+        variable = this.set.get('arguments');
+        assert(variable, 'always have arguments variable');
+        return variable.tainted || variable.references.length  !== 0;
+    };
+
+    // API Scope#isThisMaterialized
+    // return this scope has materialized `this` reference
+    Scope.prototype.isThisMaterialized = function isThisMaterialized() {
+        // This is not function scope
+        if (this.type !== 'function') {
+            return true;
+        }
+        if (!this.isStatic()) {
+            return true;
+        }
+        return this.thisFound;
+    };
+
+    Scope.mangledName = '__$escope$__';
+
+    Scope.prototype.attach = function attach() {
+        if (!this.functionExpressionScope) {
+            this.block[Scope.mangledName] = this;
+        }
+    };
+
+    Scope.prototype.detach = function detach() {
+        if (!this.functionExpressionScope) {
+            delete this.block[Scope.mangledName];
+        }
+    };
+
+    Scope.prototype.isUsedName = function (name) {
+        if (this.set.has(name)) {
+            return true;
+        }
+        for (var i = 0, iz = this.through.length; i < iz; ++i) {
+            if (this.through[i].identifier.name === name) {
+                return true;
+            }
+        }
+        return false;
+    };
+
+    /**
+     * @class ScopeManager
+     */
+    function ScopeManager(scopes) {
+        this.scopes = scopes;
+        this.attached = false;
+    }
+
+    // Returns appropliate scope for this node
+    ScopeManager.prototype.__get = function __get(node) {
+        var i, iz, scope;
+        if (this.attached) {
+            return node[Scope.mangledName] || null;
+        }
+        if (Scope.isScopeRequired(node)) {
+            for (i = 0, iz = this.scopes.length; i < iz; ++i) {
+                scope = this.scopes[i];
+                if (!scope.functionExpressionScope) {
+                    if (scope.block === node) {
+                        return scope;
+                    }
+                }
+            }
+        }
+        return null;
+    };
+
+    ScopeManager.prototype.acquire = function acquire(node) {
+        return this.__get(node);
+    };
+
+    ScopeManager.prototype.release = function release(node) {
+        var scope = this.__get(node);
+        if (scope) {
+            scope = scope.upper;
+            while (scope) {
+                if (!scope.functionExpressionScope) {
+                    return scope;
+                }
+                scope = scope.upper;
+            }
+        }
+        return null;
+    };
+
+    ScopeManager.prototype.attach = function attach() {
+        var i, iz;
+        for (i = 0, iz = this.scopes.length; i < iz; ++i) {
+            this.scopes[i].attach();
+        }
+        this.attached = true;
+    };
+
+    ScopeManager.prototype.detach = function detach() {
+        var i, iz;
+        for (i = 0, iz = this.scopes.length; i < iz; ++i) {
+            this.scopes[i].detach();
+        }
+        this.attached = false;
+    };
+
+    Scope.isScopeRequired = function isScopeRequired(node) {
+        return Scope.isVariableScopeRequired(node) || node.type === Syntax.WithStatement || node.type === Syntax.CatchClause;
+    };
+
+    Scope.isVariableScopeRequired = function isVariableScopeRequired(node) {
+        return node.type === Syntax.Program || node.type === Syntax.FunctionExpression || node.type === Syntax.FunctionDeclaration;
+    };
+
+    /**
+     * Main interface function. Takes an Esprima syntax tree and returns the
+     * analyzed scopes.
+     * @function analyze
+     * @param {esprima.Tree} tree
+     * @param {Object} providedOptions - Options that tailor the scope analysis
+     * @param {boolean} [providedOptions.optimistic=false] - the optimistic flag
+     * @param {boolean} [providedOptions.directive=false]- the directive flag
+     * @param {boolean} [providedOptions.ignoreEval=false]- whether to check 'eval()' calls
+     * @return {ScopeManager}
+     */
+    function analyze(tree, providedOptions) {
+        var resultScopes;
+
+        options = updateDeeply(defaultOptions(), providedOptions);
+        resultScopes = scopes = [];
+        currentScope = null;
+        globalScope = null;
+
+        // attach scope and collect / resolve names
+        estraverse.traverse(tree, {
+            enter: function enter(node) {
+                var i, iz, decl;
+                if (Scope.isScopeRequired(node)) {
+                    new Scope(node, {});
+                }
+
+                switch (node.type) {
+                case Syntax.AssignmentExpression:
+                    if (node.operator === '=') {
+                        currentScope.__referencing(node.left, Reference.WRITE, node.right, (!currentScope.isStrict && node.left.name != null) && node);
+                    } else {
+                        currentScope.__referencing(node.left, Reference.RW, node.right);
+                    }
+                    currentScope.__referencing(node.right);
+                    break;
+
+                case Syntax.ArrayExpression:
+                    for (i = 0, iz = node.elements.length; i < iz; ++i) {
+                        currentScope.__referencing(node.elements[i]);
+                    }
+                    break;
+
+                case Syntax.BlockStatement:
+                    break;
+
+                case Syntax.BinaryExpression:
+                    currentScope.__referencing(node.left);
+                    currentScope.__referencing(node.right);
+                    break;
+
+                case Syntax.BreakStatement:
+                    break;
+
+                case Syntax.CallExpression:
+                    currentScope.__referencing(node.callee);
+                    for (i = 0, iz = node['arguments'].length; i < iz; ++i) {
+                        currentScope.__referencing(node['arguments'][i]);
+                    }
+
+                    // check this is direct call to eval
+                    if (!options.ignoreEval && node.callee.type === Syntax.Identifier && node.callee.name === 'eval') {
+                        currentScope.variableScope.__detectEval();
+                    }
+                    break;
+
+                case Syntax.CatchClause:
+                    currentScope.__define(node.param, {
+                        type: Variable.CatchClause,
+                        name: node.param,
+                        node: node
+                    });
+                    break;
+
+                case Syntax.ConditionalExpression:
+                    currentScope.__referencing(node.test);
+                    currentScope.__referencing(node.consequent);
+                    currentScope.__referencing(node.alternate);
+                    break;
+
+                case Syntax.ContinueStatement:
+                    break;
+
+                case Syntax.DirectiveStatement:
+                    break;
+
+                case Syntax.DoWhileStatement:
+                    currentScope.__referencing(node.test);
+                    break;
+
+                case Syntax.DebuggerStatement:
+                    break;
+
+                case Syntax.EmptyStatement:
+                    break;
+
+                case Syntax.ExpressionStatement:
+                    currentScope.__referencing(node.expression);
+                    break;
+
+                case Syntax.ForStatement:
+                    currentScope.__referencing(node.init);
+                    currentScope.__referencing(node.test);
+                    currentScope.__referencing(node.update);
+                    break;
+
+                case Syntax.ForInStatement:
+                    if (node.left.type === Syntax.VariableDeclaration) {
+                        currentScope.__referencing(node.left.declarations[0].id, Reference.WRITE, null, false);
+                    } else {
+                        currentScope.__referencing(node.left, Reference.WRITE, null, (!currentScope.isStrict && node.left.name != null) && node);
+                    }
+                    currentScope.__referencing(node.right);
+                    break;
+
+                case Syntax.FunctionDeclaration:
+                    // FunctionDeclaration name is defined in upper scope
+                    currentScope.upper.__define(node.id, {
+                        type: Variable.FunctionName,
+                        name: node.id,
+                        node: node
+                    });
+                    for (i = 0, iz = node.params.length; i < iz; ++i) {
+                        currentScope.__define(node.params[i], {
+                            type: Variable.Parameter,
+                            name: node.params[i],
+                            node: node,
+                            index: i
+                        });
+                    }
+                    break;
+
+                case Syntax.FunctionExpression:
+                    // id is defined in upper scope
+                    for (i = 0, iz = node.params.length; i < iz; ++i) {
+                        currentScope.__define(node.params[i], {
+                            type: Variable.Parameter,
+                            name: node.params[i],
+                            node: node,
+                            index: i
+                        });
+                    }
+                    break;
+
+                case Syntax.Identifier:
+                    break;
+
+                case Syntax.IfStatement:
+                    currentScope.__referencing(node.test);
+                    break;
+
+                case Syntax.Literal:
+                    break;
+
+                case Syntax.LabeledStatement:
+                    break;
+
+                case Syntax.LogicalExpression:
+                    currentScope.__referencing(node.left);
+                    currentScope.__referencing(node.right);
+                    break;
+
+                case Syntax.MemberExpression:
+                    currentScope.__referencing(node.object);
+                    if (node.computed) {
+                        currentScope.__referencing(node.property);
+                    }
+                    break;
+
+                case Syntax.NewExpression:
+                    currentScope.__referencing(node.callee);
+                    for (i = 0, iz = node['arguments'].length; i < iz; ++i) {
+                        currentScope.__referencing(node['arguments'][i]);
+                    }
+                    break;
+
+                case Syntax.ObjectExpression:
+                    break;
+
+                case Syntax.Program:
+                    break;
+
+                case Syntax.Property:
+                    currentScope.__referencing(node.value);
+                    break;
+
+                case Syntax.ReturnStatement:
+                    currentScope.__referencing(node.argument);
+                    break;
+
+                case Syntax.SequenceExpression:
+                    for (i = 0, iz = node.expressions.length; i < iz; ++i) {
+                        currentScope.__referencing(node.expressions[i]);
+                    }
+                    break;
+
+                case Syntax.SwitchStatement:
+                    currentScope.__referencing(node.discriminant);
+                    break;
+
+                case Syntax.SwitchCase:
+                    currentScope.__referencing(node.test);
+                    break;
+
+                case Syntax.ThisExpression:
+                    currentScope.variableScope.__detectThis();
+                    break;
+
+                case Syntax.ThrowStatement:
+                    currentScope.__referencing(node.argument);
+                    break;
+
+                case Syntax.TryStatement:
+                    break;
+
+                case Syntax.UnaryExpression:
+                    currentScope.__referencing(node.argument);
+                    break;
+
+                case Syntax.UpdateExpression:
+                    currentScope.__referencing(node.argument, Reference.RW, null);
+                    break;
+
+                case Syntax.VariableDeclaration:
+                    for (i = 0, iz = node.declarations.length; i < iz; ++i) {
+                        decl = node.declarations[i];
+                        currentScope.variableScope.__define(decl.id, {
+                            type: Variable.Variable,
+                            name: decl.id,
+                            node: decl,
+                            index: i,
+                            parent: node
+                        });
+                        if (decl.init) {
+                            // initializer is found
+                            currentScope.__referencing(decl.id, Reference.WRITE, decl.init, false);
+                            currentScope.__referencing(decl.init);
+                        }
+                    }
+                    break;
+
+                case Syntax.VariableDeclarator:
+                    break;
+
+                case Syntax.WhileStatement:
+                    currentScope.__referencing(node.test);
+                    break;
+
+                case Syntax.WithStatement:
+                    // WithStatement object is referenced at upper scope
+                    currentScope.upper.__referencing(node.object);
+                    break;
+                }
+            },
+
+            leave: function leave(node) {
+                while (currentScope && node === currentScope.block) {
+                    currentScope.__close();
+                }
+            }
+        });
+
+        assert(currentScope === null);
+        globalScope = null;
+        scopes = null;
+        options = null;
+
+        return new ScopeManager(resultScopes);
+    }
+
+    /** @name module:escope.version */
+    exports.version = '1.0.1';
+    /** @name module:escope.Reference */
+    exports.Reference = Reference;
+    /** @name module:escope.Variable */
+    exports.Variable = Variable;
+    /** @name module:escope.Scope */
+    exports.Scope = Scope;
+    /** @name module:escope.ScopeManager */
+    exports.ScopeManager = ScopeManager;
+    /** @name module:escope.analyze */
+    exports.analyze = analyze;
+}, this));
+/* vim: set sw=4 ts=4 et tw=80 : */
+
+},{"estraverse":7}],6:[function(require,module,exports){
+/*
+  Copyright (C) 2013 Ariya Hidayat <ariya.hidayat@gmail.com>
+  Copyright (C) 2013 Thaddee Tyl <thaddee.tyl@gmail.com>
+  Copyright (C) 2013 Mathias Bynens <mathias@qiwi.be>
+  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
+  Copyright (C) 2012 Mathias Bynens <mathias@qiwi.be>
+  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
+  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
+  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>
+  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>
+  Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/*jslint bitwise:true plusplus:true */
+/*global esprima:true, define:true, exports:true, window: true,
+throwErrorTolerant: true,
+throwError: true, generateStatement: true, peek: true,
+parseAssignmentExpression: true, parseBlock: true, parseExpression: true,
+parseFunctionDeclaration: true, parseFunctionExpression: true,
+parseFunctionSourceElements: true, parseVariableIdentifier: true,
+parseLeftHandSideExpression: true,
+parseUnaryExpression: true,
+parseStatement: true, parseSourceElement: true */
+
+(function (root, factory) {
+    'use strict';
+
+    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
+    // Rhino, and plain browser loading.
+
+    /* istanbul ignore next */
+    if (typeof define === 'function' && define.amd) {
+        define(['exports'], factory);
+    } else if (typeof exports !== 'undefined') {
+        factory(exports);
+    } else {
+        factory((root.esprima = {}));
+    }
+}(this, function (exports) {
+    'use strict';
+
+    var Token,
+        TokenName,
+        FnExprTokens,
+        Syntax,
+        PropertyKind,
+        Messages,
+        Regex,
+        SyntaxTreeDelegate,
+        source,
+        strict,
+        index,
+        lineNumber,
+        lineStart,
+        length,
+        delegate,
+        lookahead,
+        state,
+        extra;
+
+    Token = {
+        BooleanLiteral: 1,
+        EOF: 2,
+        Identifier: 3,
+        Keyword: 4,
+        NullLiteral: 5,
+        NumericLiteral: 6,
+        Punctuator: 7,
+        StringLiteral: 8,
+        RegularExpression: 9
+    };
+
+    TokenName = {};
+    TokenName[Token.BooleanLiteral] = 'Boolean';
+    TokenName[Token.EOF] = '<end>';
+    TokenName[Token.Identifier] = 'Identifier';
+    TokenName[Token.Keyword] = 'Keyword';
+    TokenName[Token.NullLiteral] = 'Null';
+    TokenName[Token.NumericLiteral] = 'Numeric';
+    TokenName[Token.Punctuator] = 'Punctuator';
+    TokenName[Token.StringLiteral] = 'String';
+    TokenName[Token.RegularExpression] = 'RegularExpression';
+
+    // A function following one of those tokens is an expression.
+    FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
+                    'return', 'case', 'delete', 'throw', 'void',
+                    // assignment operators
+                    '=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=',
+                    '&=', '|=', '^=', ',',
+                    // binary/unary operators
+                    '+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
+                    '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
+                    '<=', '<', '>', '!=', '!=='];
+
+    Syntax = {
+        AssignmentExpression: 'AssignmentExpression',
+        ArrayExpression: 'ArrayExpression',
+        BlockStatement: 'BlockStatement',
+        BinaryExpression: 'BinaryExpression',
+        BreakStatement: 'BreakStatement',
+        CallExpression: 'CallExpression',
+        CatchClause: 'CatchClause',
+        ConditionalExpression: 'ConditionalExpression',
+        ContinueStatement: 'ContinueStatement',
+        DoWhileStatement: 'DoWhileStatement',
+        DebuggerStatement: 'DebuggerStatement',
+        EmptyStatement: 'EmptyStatement',
+        ExpressionStatement: 'ExpressionStatement',
+        ForStatement: 'ForStatement',
+        ForInStatement: 'ForInStatement',
+        FunctionDeclaration: 'FunctionDeclaration',
+        FunctionExpression: 'FunctionExpression',
+        Identifier: 'Identifier',
+        IfStatement: 'IfStatement',
+        Literal: 'Literal',
+        LabeledStatement: 'LabeledStatement',
+        LogicalExpression: 'LogicalExpression',
+        MemberExpression: 'MemberExpression',
+        NewExpression: 'NewExpression',
+        ObjectExpression: 'ObjectExpression',
+        Program: 'Program',
+        Property: 'Property',
+        ReturnStatement: 'ReturnStatement',
+        SequenceExpression: 'SequenceExpression',
+        SwitchStatement: 'SwitchStatement',
+        SwitchCase: 'SwitchCase',
+        ThisExpression: 'ThisExpression',
+        ThrowStatement: 'ThrowStatement',
+        TryStatement: 'TryStatement',
+        UnaryExpression: 'UnaryExpression',
+        UpdateExpression: 'UpdateExpression',
+        VariableDeclaration: 'VariableDeclaration',
+        VariableDeclarator: 'VariableDeclarator',
+        WhileStatement: 'WhileStatement',
+        WithStatement: 'WithStatement'
+    };
+
+    PropertyKind = {
+        Data: 1,
+        Get: 2,
+        Set: 4
+    };
+
+    // Error messages should be identical to V8.
+    Messages = {
+        UnexpectedToken:  'Unexpected token %0',
+        UnexpectedNumber:  'Unexpected number',
+        UnexpectedString:  'Unexpected string',
+        UnexpectedIdentifier:  'Unexpected identifier',
+        UnexpectedReserved:  'Unexpected reserved word',
+        UnexpectedEOS:  'Unexpected end of input',
+        NewlineAfterThrow:  'Illegal newline after throw',
+        InvalidRegExp: 'Invalid regular expression',
+        UnterminatedRegExp:  'Invalid regular expression: missing /',
+        InvalidLHSInAssignment:  'Invalid left-hand side in assignment',
+        InvalidLHSInForIn:  'Invalid left-hand side in for-in',
+        MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
+        NoCatchOrFinally:  'Missing catch or finally after try',
+        UnknownLabel: 'Undefined label \'%0\'',
+        Redeclaration: '%0 \'%1\' has already been declared',
+        IllegalContinue: 'Illegal continue statement',
+        IllegalBreak: 'Illegal break statement',
+        IllegalReturn: 'Illegal return statement',
+        StrictModeWith:  'Strict mode code may not include a with statement',
+        StrictCatchVariable:  'Catch variable may not be eval or arguments in strict mode',
+        StrictVarName:  'Variable name may not be eval or arguments in strict mode',
+        StrictParamName:  'Parameter name eval or arguments is not allowed in strict mode',
+        StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
+        StrictFunctionName:  'Function name may not be eval or arguments in strict mode',
+        StrictOctalLiteral:  'Octal literals are not allowed in strict mode.',
+        StrictDelete:  'Delete of an unqualified identifier in strict mode.',
+        StrictDuplicateProperty:  'Duplicate data property in object literal not allowed in strict mode',
+        AccessorDataProperty:  'Object literal may not have data and accessor property with the same name',
+        AccessorGetSet:  'Object literal may not have multiple get/set accessors with the same name',
+        StrictLHSAssignment:  'Assignment to eval or arguments is not allowed in strict mode',
+        StrictLHSPostfix:  'Postfix increment/decrement may not have eval or arguments operand in strict mode',
+        StrictLHSPrefix:  'Prefix increment/decrement may not have eval or arguments operand in strict mode',
+        StrictReservedWord:  'Use of future reserved word in strict mode'
+    };
+
+    // See also tools/generate-unicode-regex.py.
+    Regex = {
+        NonAsciiIdentifierStart: new RegExp('[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0\u08A2-\u08AC\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097F\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F0\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191C\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA697\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA793\uA7A0-\uA7AA\uA7F8-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA80-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]'),
+        NonAsciiIdentifierPart: new RegExp('[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0300-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u0483-\u0487\u048A-\u0527\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0620-\u0669\u066E-\u06D3\u06D5-\u06DC\u06DF-\u06E8\u06EA-\u06FC\u06FF\u0710-\u074A\u074D-\u07B1\u07C0-\u07F5\u07FA\u0800-\u082D\u0840-\u085B\u08A0\u08A2-\u08AC\u08E4-\u08FE\u0900-\u0963\u0966-\u096F\u0971-\u0977\u0979-\u097F\u0981-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AEF\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B6F\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BEF\u0C01-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58\u0C59\u0C60-\u0C63\u0C66-\u0C6F\u0C82\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0CF1\u0CF2\u0D02\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4E\u0D57\u0D60-\u0D63\u0D66-\u0D6F\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E4E\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC-\u0EDF\u0F00\u0F18\u0F19\u0F20-\u0F29\u0F35\u0F37\u0F39\u0F3E-\u0F47\u0F49-\u0F6C\u0F71-\u0F84\u0F86-\u0F97\u0F99-\u0FBC\u0FC6\u1000-\u1049\u1050-\u109D\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135D-\u135F\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F0\u1700-\u170C\u170E-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17D3\u17D7\u17DC\u17DD\u17E0-\u17E9\u180B-\u180D\u1810-\u1819\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191C\u1920-\u192B\u1930-\u193B\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19D9\u1A00-\u1A1B\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA7\u1B00-\u1B4B\u1B50-\u1B59\u1B6B-\u1B73\u1B80-\u1BF3\u1C00-\u1C37\u1C40-\u1C49\u1C4D-\u1C7D\u1CD0-\u1CD2\u1CD4-\u1CF6\u1D00-\u1DE6\u1DFC-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u200C\u200D\u203F\u2040\u2054\u2071\u207F\u2090-\u209C\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D7F-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u2E2F\u3005-\u3007\u3021-\u302F\u3031-\u3035\u3038-\u303C\u3041-\u3096\u3099\u309A\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66F\uA674-\uA67D\uA67F-\uA697\uA69F-\uA6F1\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA793\uA7A0-\uA7AA\uA7F8-\uA827\uA840-\uA873\uA880-\uA8C4\uA8D0-\uA8D9\uA8E0-\uA8F7\uA8FB\uA900-\uA92D\uA930-\uA953\uA960-\uA97C\uA980-\uA9C0\uA9CF-\uA9D9\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA60-\uAA76\uAA7A\uAA7B\uAA80-\uAAC2\uAADB-\uAADD\uAAE0-\uAAEF\uAAF2-\uAAF6\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uABC0-\uABEA\uABEC\uABED\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE00-\uFE0F\uFE20-\uFE26\uFE33\uFE34\uFE4D-\uFE4F\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF3F\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]')
+    };
+
+    // Ensure the condition is true, otherwise throw an error.
+    // This is only to have a better contract semantic, i.e. another safety net
+    // to catch a logic error. The condition shall be fulfilled in normal case.
+    // Do NOT use this to enforce a certain condition on any user input.
+
+    function assert(condition, message) {
+        /* istanbul ignore if */
+        if (!condition) {
+            throw new Error('ASSERT: ' + message);
+        }
+    }
+
+    function isDecimalDigit(ch) {
+        return (ch >= 48 && ch <= 57);   // 0..9
+    }
+
+    function isHexDigit(ch) {
+        return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
+    }
+
+    function isOctalDigit(ch) {
+        return '01234567'.indexOf(ch) >= 0;
+    }
+
+
+    // 7.2 White Space
+
+    function isWhiteSpace(ch) {
+        return (ch === 0x20) || (ch === 0x09) || (ch === 0x0B) || (ch === 0x0C) || (ch === 0xA0) ||
+            (ch >= 0x1680 && [0x1680, 0x180E, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202F, 0x205F, 0x3000, 0xFEFF].indexOf(ch) >= 0);
+    }
+
+    // 7.3 Line Terminators
+
+    function isLineTerminator(ch) {
+        return (ch === 0x0A) || (ch === 0x0D) || (ch === 0x2028) || (ch === 0x2029);
+    }
+
+    // 7.6 Identifier Names and Identifiers
+
+    function isIdentifierStart(ch) {
+        return (ch === 0x24) || (ch === 0x5F) ||  // $ (dollar) and _ (underscore)
+            (ch >= 0x41 && ch <= 0x5A) ||         // A..Z
+            (ch >= 0x61 && ch <= 0x7A) ||         // a..z
+            (ch === 0x5C) ||                      // \ (backslash)
+            ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(String.fromCharCode(ch)));
+    }
+
+    function isIdentifierPart(ch) {
+        return (ch === 0x24) || (ch === 0x5F) ||  // $ (dollar) and _ (underscore)
+            (ch >= 0x41 && ch <= 0x5A) ||         // A..Z
+            (ch >= 0x61 && ch <= 0x7A) ||         // a..z
+            (ch >= 0x30 && ch <= 0x39) ||         // 0..9
+            (ch === 0x5C) ||                      // \ (backslash)
+            ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(String.fromCharCode(ch)));
+    }
+
+    // 7.6.1.2 Future Reserved Words
+
+    function isFutureReservedWord(id) {
+        switch (id) {
+        case 'class':
+        case 'enum':
+        case 'export':
+        case 'extends':
+        case 'import':
+        case 'super':
+            return true;
+        default:
+            return false;
+        }
+    }
+
+    function isStrictModeReservedWord(id) {
+        switch (id) {
+        case 'implements':
+        case 'interface':
+        case 'package':
+        case 'private':
+        case 'protected':
+        case 'public':
+        case 'static':
+        case 'yield':
+        case 'let':
+            return true;
+        default:
+            return false;
+        }
+    }
+
+    function isRestrictedWord(id) {
+        return id === 'eval' || id === 'arguments';
+    }
+
+    // 7.6.1.1 Keywords
+
+    function isKeyword(id) {
+        if (strict && isStrictModeReservedWord(id)) {
+            return true;
+        }
+
+        // 'const' is specialized as Keyword in V8.
+        // 'yield' and 'let' are for compatiblity with SpiderMonkey and ES.next.
+        // Some others are from future reserved words.
+
+        switch (id.length) {
+        case 2:
+            return (id === 'if') || (id === 'in') || (id === 'do');
+        case 3:
+            return (id === 'var') || (id === 'for') || (id === 'new') ||
+                (id === 'try') || (id === 'let');
+        case 4:
+            return (id === 'this') || (id === 'else') || (id === 'case') ||
+                (id === 'void') || (id === 'with') || (id === 'enum');
+        case 5:
+            return (id === 'while') || (id === 'break') || (id === 'catch') ||
+                (id === 'throw') || (id === 'const') || (id === 'yield') ||
+                (id === 'class') || (id === 'super');
+        case 6:
+            return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
+                (id === 'switch') || (id === 'export') || (id === 'import');
+        case 7:
+            return (id === 'default') || (id === 'finally') || (id === 'extends');
+        case 8:
+            return (id === 'function') || (id === 'continue') || (id === 'debugger');
+        case 10:
+            return (id === 'instanceof');
+        default:
+            return false;
+        }
+    }
+
+    // 7.4 Comments
+
+    function addComment(type, value, start, end, loc) {
+        var comment, attacher;
+
+        assert(typeof start === 'number', 'Comment must have valid position');
+
+        // Because the way the actual token is scanned, often the comments
+        // (if any) are skipped twice during the lexical analysis.
+        // Thus, we need to skip adding a comment if the comment array already
+        // handled it.
+        if (state.lastCommentStart >= start) {
+            return;
+        }
+        state.lastCommentStart = start;
+
+        comment = {
+            type: type,
+            value: value
+        };
+        if (extra.range) {
+            comment.range = [start, end];
+        }
+        if (extra.loc) {
+            comment.loc = loc;
+        }
+        extra.comments.push(comment);
+        if (extra.attachComment) {
+            extra.leadingComments.push(comment);
+            extra.trailingComments.push(comment);
+        }
+    }
+
+    function skipSingleLineComment(offset) {
+        var start, loc, ch, comment;
+
+        start = index - offset;
+        loc = {
+            start: {
+                line: lineNumber,
+                column: index - lineStart - offset
+            }
+        };
+
+        while (index < length) {
+            ch = source.charCodeAt(index);
+            ++index;
+            if (isLineTerminator(ch)) {
+                if (extra.comments) {
+                    comment = source.slice(start + offset, index - 1);
+                    loc.end = {
+                        line: lineNumber,
+                        column: index - lineStart - 1
+                    };
+                    addComment('Line', comment, start, index - 1, loc);
+                }
+                if (ch === 13 && source.charCodeAt(index) === 10) {
+                    ++index;
+                }
+                ++lineNumber;
+                lineStart = index;
+                return;
+            }
+        }
+
+        if (extra.comments) {
+            comment = source.slice(start + offset, index);
+            loc.end = {
+                line: lineNumber,
+                column: index - lineStart
+            };
+            addComment('Line', comment, start, index, loc);
+        }
+    }
+
+    function skipMultiLineComment() {
+        var start, loc, ch, comment;
+
+        if (extra.comments) {
+            start = index - 2;
+            loc = {
+                start: {
+                    line: lineNumber,
+                    column: index - lineStart - 2
+                }
+            };
+        }
+
+        while (index < length) {
+            ch = source.charCodeAt(index);
+            if (isLineTerminator(ch)) {
+                if (ch === 0x0D && source.charCodeAt(index + 1) === 0x0A) {
+                    ++index;
+                }
+                ++lineNumber;
+                ++index;
+                lineStart = index;
+                if (index >= length) {
+                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+            } else if (ch === 0x2A) {
+                // Block comment ends with '*/'.
+                if (source.charCodeAt(index + 1) === 0x2F) {
+                    ++index;
+                    ++index;
+                    if (extra.comments) {
+                        comment = source.slice(start + 2, index - 2);
+                        loc.end = {
+                            line: lineNumber,
+                            column: index - lineStart
+                        };
+                        addComment('Block', comment, start, index, loc);
+                    }
+                    return;
+                }
+                ++index;
+            } else {
+                ++index;
+            }
+        }
+
+        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+    }
+
+    function skipComment() {
+        var ch, start;
+
+        start = (index === 0);
+        while (index < length) {
+            ch = source.charCodeAt(index);
+
+            if (isWhiteSpace(ch)) {
+                ++index;
+            } else if (isLineTerminator(ch)) {
+                ++index;
+                if (ch === 0x0D && source.charCodeAt(index) === 0x0A) {
+                    ++index;
+                }
+                ++lineNumber;
+                lineStart = index;
+                start = true;
+            } else if (ch === 0x2F) { // U+002F is '/'
+                ch = source.charCodeAt(index + 1);
+                if (ch === 0x2F) {
+                    ++index;
+                    ++index;
+                    skipSingleLineComment(2);
+                    start = true;
+                } else if (ch === 0x2A) {  // U+002A is '*'
+                    ++index;
+                    ++index;
+                    skipMultiLineComment();
+                } else {
+                    break;
+                }
+            } else if (start && ch === 0x2D) { // U+002D is '-'
+                // U+003E is '>'
+                if ((source.charCodeAt(index + 1) === 0x2D) && (source.charCodeAt(index + 2) === 0x3E)) {
+                    // '-->' is a single-line comment
+                    index += 3;
+                    skipSingleLineComment(3);
+                } else {
+                    break;
+                }
+            } else if (ch === 0x3C) { // U+003C is '<'
+                if (source.slice(index + 1, index + 4) === '!--') {
+                    ++index; // `<`
+                    ++index; // `!`
+                    ++index; // `-`
+                    ++index; // `-`
+                    skipSingleLineComment(4);
+                } else {
+                    break;
+                }
+            } else {
+                break;
+            }
+        }
+    }
+
+    function scanHexEscape(prefix) {
+        var i, len, ch, code = 0;
+
+        len = (prefix === 'u') ? 4 : 2;
+        for (i = 0; i < len; ++i) {
+            if (index < length && isHexDigit(source[index])) {
+                ch = source[index++];
+                code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
+            } else {
+                return '';
+            }
+        }
+        return String.fromCharCode(code);
+    }
+
+    function getEscapedIdentifier() {
+        var ch, id;
+
+        ch = source.charCodeAt(index++);
+        id = String.fromCharCode(ch);
+
+        // '\u' (U+005C, U+0075) denotes an escaped character.
+        if (ch === 0x5C) {
+            if (source.charCodeAt(index) !== 0x75) {
+                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+            }
+            ++index;
+            ch = scanHexEscape('u');
+            if (!ch || ch === '\\' || !isIdentifierStart(ch.charCodeAt(0))) {
+                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+            }
+            id = ch;
+        }
+
+        while (index < length) {
+            ch = source.charCodeAt(index);
+            if (!isIdentifierPart(ch)) {
+                break;
+            }
+            ++index;
+            id += String.fromCharCode(ch);
+
+            // '\u' (U+005C, U+0075) denotes an escaped character.
+            if (ch === 0x5C) {
+                id = id.substr(0, id.length - 1);
+                if (source.charCodeAt(index) !== 0x75) {
+                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+                ++index;
+                ch = scanHexEscape('u');
+                if (!ch || ch === '\\' || !isIdentifierPart(ch.charCodeAt(0))) {
+                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+                id += ch;
+            }
+        }
+
+        return id;
+    }
+
+    function getIdentifier() {
+        var start, ch;
+
+        start = index++;
+        while (index < length) {
+            ch = source.charCodeAt(index);
+            if (ch === 0x5C) {
+                // Blackslash (U+005C) marks Unicode escape sequence.
+                index = start;
+                return getEscapedIdentifier();
+            }
+            if (isIdentifierPart(ch)) {
+                ++index;
+            } else {
+                break;
+            }
+        }
+
+        return source.slice(start, index);
+    }
+
+    function scanIdentifier() {
+        var start, id, type;
+
+        start = index;
+
+        // Backslash (U+005C) starts an escaped character.
+        id = (source.charCodeAt(index) === 0x5C) ? getEscapedIdentifier() : getIdentifier();
+
+        // There is no keyword or literal with only one character.
+        // Thus, it must be an identifier.
+        if (id.length === 1) {
+            type = Token.Identifier;
+        } else if (isKeyword(id)) {
+            type = Token.Keyword;
+        } else if (id === 'null') {
+            type = Token.NullLiteral;
+        } else if (id === 'true' || id === 'false') {
+            type = Token.BooleanLiteral;
+        } else {
+            type = Token.Identifier;
+        }
+
+        return {
+            type: type,
+            value: id,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            start: start,
+            end: index
+        };
+    }
+
+
+    // 7.7 Punctuators
+
+    function scanPunctuator() {
+        var start = index,
+            code = source.charCodeAt(index),
+            code2,
+            ch1 = source[index],
+            ch2,
+            ch3,
+            ch4;
+
+        switch (code) {
+
+        // Check for most common single-character punctuators.
+        case 0x2E:  // . dot
+        case 0x28:  // ( open bracket
+        case 0x29:  // ) close bracket
+        case 0x3B:  // ; semicolon
+        case 0x2C:  // , comma
+        case 0x7B:  // { open curly brace
+        case 0x7D:  // } close curly brace
+        case 0x5B:  // [
+        case 0x5D:  // ]
+        case 0x3A:  // :
+        case 0x3F:  // ?
+        case 0x7E:  // ~
+            ++index;
+            if (extra.tokenize) {
+                if (code === 0x28) {
+                    extra.openParenToken = extra.tokens.length;
+                } else if (code === 0x7B) {
+                    extra.openCurlyToken = extra.tokens.length;
+                }
+            }
+            return {
+                type: Token.Punctuator,
+                value: String.fromCharCode(code),
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                start: start,
+                end: index
+            };
+
+        default:
+            code2 = source.charCodeAt(index + 1);
+
+            // '=' (U+003D) marks an assignment or comparison operator.
+            if (code2 === 0x3D) {
+                switch (code) {
+                case 0x2B:  // +
+                case 0x2D:  // -
+                case 0x2F:  // /
+                case 0x3C:  // <
+                case 0x3E:  // >
+                case 0x5E:  // ^
+                case 0x7C:  // |
+                case 0x25:  // %
+                case 0x26:  // &
+                case 0x2A:  // *
+                    index += 2;
+                    return {
+                        type: Token.Punctuator,
+                        value: String.fromCharCode(code) + String.fromCharCode(code2),
+                        lineNumber: lineNumber,
+                        lineStart: lineStart,
+                        start: start,
+                        end: index
+                    };
+
+                case 0x21: // !
+                case 0x3D: // =
+                    index += 2;
+
+                    // !== and ===
+                    if (source.charCodeAt(index) === 0x3D) {
+                        ++index;
+                    }
+                    return {
+                        type: Token.Punctuator,
+                        value: source.slice(start, index),
+                        lineNumber: lineNumber,
+                        lineStart: lineStart,
+                        start: start,
+                        end: index
+                    };
+                }
+            }
+        }
+
+        // 4-character punctuator: >>>=
+
+        ch4 = source.substr(index, 4);
+
+        if (ch4 === '>>>=') {
+            index += 4;
+            return {
+                type: Token.Punctuator,
+                value: ch4,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                start: start,
+                end: index
+            };
+        }
+
+        // 3-character punctuators: === !== >>> <<= >>=
+
+        ch3 = ch4.substr(0, 3);
+
+        if (ch3 === '>>>' || ch3 === '<<=' || ch3 === '>>=') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: ch3,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                start: start,
+                end: index
+            };
+        }
+
+        // Other 2-character punctuators: ++ -- << >> && ||
+        ch2 = ch3.substr(0, 2);
+
+        if ((ch1 === ch2[1] && ('+-<>&|'.indexOf(ch1) >= 0)) || ch2 === '=>') {
+            index += 2;
+            return {
+                type: Token.Punctuator,
+                value: ch2,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                start: start,
+                end: index
+            };
+        }
+
+        // 1-character punctuators: < > = ! + - * % & | ^ /
+        if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
+            ++index;
+            return {
+                type: Token.Punctuator,
+                value: ch1,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                start: start,
+                end: index
+            };
+        }
+
+        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+    }
+
+    // 7.8.3 Numeric Literals
+
+    function scanHexLiteral(start) {
+        var number = '';
+
+        while (index < length) {
+            if (!isHexDigit(source[index])) {
+                break;
+            }
+            number += source[index++];
+        }
+
+        if (number.length === 0) {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        if (isIdentifierStart(source.charCodeAt(index))) {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.NumericLiteral,
+            value: parseInt('0x' + number, 16),
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            start: start,
+            end: index
+        };
+    }
+
+    function scanOctalLiteral(start) {
+        var number = '0' + source[index++];
+        while (index < length) {
+            if (!isOctalDigit(source[index])) {
+                break;
+            }
+            number += source[index++];
+        }
+
+        if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.NumericLiteral,
+            value: parseInt(number, 8),
+            octal: true,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            start: start,
+            end: index
+        };
+    }
+
+    function scanNumericLiteral() {
+        var number, start, ch;
+
+        ch = source[index];
+        assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),
+            'Numeric literal must start with a decimal digit or a decimal point');
+
+        start = index;
+        number = '';
+        if (ch !== '.') {
+            number = source[index++];
+            ch = source[index];
+
+            // Hex number starts with '0x'.
+            // Octal number starts with '0'.
+            if (number === '0') {
+                if (ch === 'x' || ch === 'X') {
+                    ++index;
+                    return scanHexLiteral(start);
+                }
+                if (isOctalDigit(ch)) {
+                    return scanOctalLiteral(start);
+                }
+
+                // decimal number starts with '0' such as '09' is illegal.
+                if (ch && isDecimalDigit(ch.charCodeAt(0))) {
+                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+            }
+
+            while (isDecimalDigit(source.charCodeAt(index))) {
+                number += source[index++];
+            }
+            ch = source[index];
+        }
+
+        if (ch === '.') {
+            number += source[index++];
+            while (isDecimalDigit(source.charCodeAt(index))) {
+                number += source[index++];
+            }
+            ch = source[index];
+        }
+
+        if (ch === 'e' || ch === 'E') {
+            number += source[index++];
+
+            ch = source[index];
+            if (ch === '+' || ch === '-') {
+                number += source[index++];
+            }
+            if (isDecimalDigit(source.charCodeAt(index))) {
+                while (isDecimalDigit(source.charCodeAt(index))) {
+                    number += source[index++];
+                }
+            } else {
+                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+            }
+        }
+
+        if (isIdentifierStart(source.charCodeAt(index))) {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.NumericLiteral,
+            value: parseFloat(number),
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            start: start,
+            end: index
+        };
+    }
+
+    // 7.8.4 String Literals
+
+    function scanStringLiteral() {
+        var str = '', quote, start, ch, code, unescaped, restore, octal = false, startLineNumber, startLineStart;
+        startLineNumber = lineNumber;
+        startLineStart = lineStart;
+
+        quote = source[index];
+        assert((quote === '\'' || quote === '"'),
+            'String literal must starts with a quote');
+
+        start = index;
+        ++index;
+
+        while (index < length) {
+            ch = source[index++];
+
+            if (ch === quote) {
+                quote = '';
+                break;
+            } else if (ch === '\\') {
+                ch = source[index++];
+                if (!ch || !isLineTerminator(ch.charCodeAt(0))) {
+                    switch (ch) {
+                    case 'u':
+                    case 'x':
+                        restore = index;
+                        unescaped = scanHexEscape(ch);
+                        if (unescaped) {
+                            str += unescaped;
+                        } else {
+                            index = restore;
+                            str += ch;
+                        }
+                        break;
+                    case 'n':
+                        str += '\n';
+                        break;
+                    case 'r':
+                        str += '\r';
+                        break;
+                    case 't':
+                        str += '\t';
+                        break;
+                    case 'b':
+                        str += '\b';
+                        break;
+                    case 'f':
+                        str += '\f';
+                        break;
+                    case 'v':
+                        str += '\x0B';
+                        break;
+
+                    default:
+                        if (isOctalDigit(ch)) {
+                            code = '01234567'.indexOf(ch);
+
+                            // \0 is not octal escape sequence
+                            if (code !== 0) {
+                                octal = true;
+                            }
+
+                            if (index < length && isOctalDigit(source[index])) {
+                                octal = true;
+                                code = code * 8 + '01234567'.indexOf(source[index++]);
+
+                                // 3 digits are only allowed when string starts
+                                // with 0, 1, 2, 3
+                                if ('0123'.indexOf(ch) >= 0 &&
+                                        index < length &&
+                                        isOctalDigit(source[index])) {
+                                    code = code * 8 + '01234567'.indexOf(source[index++]);
+                                }
+                            }
+                            str += String.fromCharCode(code);
+                        } else {
+                            str += ch;
+                        }
+                        break;
+                    }
+                } else {
+                    ++lineNumber;
+                    if (ch ===  '\r' && source[index] === '\n') {
+                        ++index;
+                    }
+                    lineStart = index;
+                }
+            } else if (isLineTerminator(ch.charCodeAt(0))) {
+                break;
+            } else {
+                str += ch;
+            }
+        }
+
+        if (quote !== '') {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.StringLiteral,
+            value: str,
+            octal: octal,
+            startLineNumber: startLineNumber,
+            startLineStart: startLineStart,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            start: start,
+            end: index
+        };
+    }
+
+    function testRegExp(pattern, flags) {
+        var value;
+        try {
+            value = new RegExp(pattern, flags);
+        } catch (e) {
+            throwError({}, Messages.InvalidRegExp);
+        }
+        return value;
+    }
+
+    function scanRegExpBody() {
+        var ch, str, classMarker, terminated, body;
+
+        ch = source[index];
+        assert(ch === '/', 'Regular expression literal must start with a slash');
+        str = source[index++];
+
+        classMarker = false;
+        terminated = false;
+        while (index < length) {
+            ch = source[index++];
+            str += ch;
+            if (ch === '\\') {
+                ch = source[index++];
+                // ECMA-262 7.8.5
+                if (isLineTerminator(ch.charCodeAt(0))) {
+                    throwError({}, Messages.UnterminatedRegExp);
+                }
+                str += ch;
+            } else if (isLineTerminator(ch.charCodeAt(0))) {
+                throwError({}, Messages.UnterminatedRegExp);
+            } else if (classMarker) {
+                if (ch === ']') {
+                    classMarker = false;
+                }
+            } else {
+                if (ch === '/') {
+                    terminated = true;
+                    break;
+                } else if (ch === '[') {
+                    classMarker = true;
+                }
+            }
+        }
+
+        if (!terminated) {
+            throwError({}, Messages.UnterminatedRegExp);
+        }
+
+        // Exclude leading and trailing slash.
+        body = str.substr(1, str.length - 2);
+        return {
+            value: body,
+            literal: str
+        };
+    }
+
+    function scanRegExpFlags() {
+        var ch, str, flags, restore;
+
+        str = '';
+        flags = '';
+        while (index < length) {
+            ch = source[index];
+            if (!isIdentifierPart(ch.charCodeAt(0))) {
+                break;
+            }
+
+            ++index;
+            if (ch === '\\' && index < length) {
+                ch = source[index];
+                if (ch === 'u') {
+                    ++index;
+                    restore = index;
+                    ch = scanHexEscape('u');
+                    if (ch) {
+                        flags += ch;
+                        for (str += '\\u'; restore < index; ++restore) {
+                            str += source[restore];
+                        }
+                    } else {
+                        index = restore;
+                        flags += 'u';
+                        str += '\\u';
+                    }
+                    throwErrorTolerant({}, Messages.UnexpectedToken, 'ILLEGAL');
+                } else {
+                    str += '\\';
+                    throwErrorTolerant({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+            } else {
+                flags += ch;
+                str += ch;
+            }
+        }
+
+        return {
+            value: flags,
+            literal: str
+        };
+    }
+
+    function scanRegExp() {
+        var start, body, flags, pattern, value;
+
+        lookahead = null;
+        skipComment();
+        start = index;
+
+        body = scanRegExpBody();
+        flags = scanRegExpFlags();
+        value = testRegExp(body.value, flags.value);
+
+        if (extra.tokenize) {
+            return {
+                type: Token.RegularExpression,
+                value: value,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                start: start,
+                end: index
+            };
+        }
+
+        return {
+            literal: body.literal + flags.literal,
+            value: value,
+            start: start,
+            end: index
+        };
+    }
+
+    function collectRegex() {
+        var pos, loc, regex, token;
+
+        skipComment();
+
+        pos = index;
+        loc = {
+            start: {
+                line: lineNumber,
+                column: index - lineStart
+            }
+        };
+
+        regex = scanRegExp();
+        loc.end = {
+            line: lineNumber,
+            column: index - lineStart
+        };
+
+        /* istanbul ignore next */
+        if (!extra.tokenize) {
+            // Pop the previous token, which is likely '/' or '/='
+            if (extra.tokens.length > 0) {
+                token = extra.tokens[extra.tokens.length - 1];
+                if (token.range[0] === pos && token.type === 'Punctuator') {
+                    if (token.value === '/' || token.value === '/=') {
+                        extra.tokens.pop();
+                    }
+                }
+            }
+
+            extra.tokens.push({
+                type: 'RegularExpression',
+                value: regex.literal,
+                range: [pos, index],
+                loc: loc
+            });
+        }
+
+        return regex;
+    }
+
+    function isIdentifierName(token) {
+        return token.type === Token.Identifier ||
+            token.type === Token.Keyword ||
+            token.type === Token.BooleanLiteral ||
+            token.type === Token.NullLiteral;
+    }
+
+    function advanceSlash() {
+        var prevToken,
+            checkToken;
+        // Using the following algorithm:
+        // https://github.com/mozilla/sweet.js/wiki/design
+        prevToken = extra.tokens[extra.tokens.length - 1];
+        if (!prevToken) {
+            // Nothing before that: it cannot be a division.
+            return collectRegex();
+        }
+        if (prevToken.type === 'Punctuator') {
+            if (prevToken.value === ']') {
+                return scanPunctuator();
+            }
+            if (prevToken.value === ')') {
+                checkToken = extra.tokens[extra.openParenToken - 1];
+                if (checkToken &&
+                        checkToken.type === 'Keyword' &&
+                        (checkToken.value === 'if' ||
+                         checkToken.value === 'while' ||
+                         checkToken.value === 'for' ||
+                         checkToken.value === 'with')) {
+                    return collectRegex();
+                }
+                return scanPunctuator();
+            }
+            if (prevToken.value === '}') {
+                // Dividing a function by anything makes little sense,
+                // but we have to check for that.
+                if (extra.tokens[extra.openCurlyToken - 3] &&
+                        extra.tokens[extra.openCurlyToken - 3].type === 'Keyword') {
+                    // Anonymous function.
+                    checkToken = extra.tokens[extra.openCurlyToken - 4];
+                    if (!checkToken) {
+                        return scanPunctuator();
+                    }
+                } else if (extra.tokens[extra.openCurlyToken - 4] &&
+                        extra.tokens[extra.openCurlyToken - 4].type === 'Keyword') {
+                    // Named function.
+                    checkToken = extra.tokens[extra.openCurlyToken - 5];
+                    if (!checkToken) {
+                        return collectRegex();
+                    }
+                } else {
+                    return scanPunctuator();
+                }
+                // checkToken determines whether the function is
+                // a declaration or an expression.
+                if (FnExprTokens.indexOf(checkToken.value) >= 0) {
+                    // It is an expression.
+                    return scanPunctuator();
+                }
+                // It is a declaration.
+                return collectRegex();
+            }
+            return collectRegex();
+        }
+        if (prevToken.type === 'Keyword') {
+            return collectRegex();
+        }
+        return scanPunctuator();
+    }
+
+    function advance() {
+        var ch;
+
+        skipComment();
+
+        if (index >= length) {
+            return {
+                type: Token.EOF,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                start: index,
+                end: index
+            };
+        }
+
+        ch = source.charCodeAt(index);
+
+        if (isIdentifierStart(ch)) {
+            return scanIdentifier();
+        }
+
+        // Very common: ( and ) and ;
+        if (ch === 0x28 || ch === 0x29 || ch === 0x3B) {
+            return scanPunctuator();
+        }
+
+        // String literal starts with single quote (U+0027) or double quote (U+0022).
+        if (ch === 0x27 || ch === 0x22) {
+            return scanStringLiteral();
+        }
+
+
+        // Dot (.) U+002E can also start a floating-point number, hence the need
+        // to check the next character.
+        if (ch === 0x2E) {
+            if (isDecimalDigit(source.charCodeAt(index + 1))) {
+                return scanNumericLiteral();
+            }
+            return scanPunctuator();
+        }
+
+        if (isDecimalDigit(ch)) {
+            return scanNumericLiteral();
+        }
+
+        // Slash (/) U+002F can also start a regex.
+        if (extra.tokenize && ch === 0x2F) {
+            return advanceSlash();
+        }
+
+        return scanPunctuator();
+    }
+
+    function collectToken() {
+        var loc, token, range, value;
+
+        skipComment();
+        loc = {
+            start: {
+                line: lineNumber,
+                column: index - lineStart
+            }
+        };
+
+        token = advance();
+        loc.end = {
+            line: lineNumber,
+            column: index - lineStart
+        };
+
+        if (token.type !== Token.EOF) {
+            value = source.slice(token.start, token.end);
+            extra.tokens.push({
+                type: TokenName[token.type],
+                value: value,
+                range: [token.start, token.end],
+                loc: loc
+            });
+        }
+
+        return token;
+    }
+
+    function lex() {
+        var token;
+
+        token = lookahead;
+        index = token.end;
+        lineNumber = token.lineNumber;
+        lineStart = token.lineStart;
+
+        lookahead = (typeof extra.tokens !== 'undefined') ? collectToken() : advance();
+
+        index = token.end;
+        lineNumber = token.lineNumber;
+        lineStart = token.lineStart;
+
+        return token;
+    }
+
+    function peek() {
+        var pos, line, start;
+
+        pos = index;
+        line = lineNumber;
+        start = lineStart;
+        lookahead = (typeof extra.tokens !== 'undefined') ? collectToken() : advance();
+        index = pos;
+        lineNumber = line;
+        lineStart = start;
+    }
+
+    function Position(line, column) {
+        this.line = line;
+        this.column = column;
+    }
+
+    function SourceLocation(startLine, startColumn, line, column) {
+        this.start = new Position(startLine, startColumn);
+        this.end = new Position(line, column);
+    }
+
+    SyntaxTreeDelegate = {
+
+        name: 'SyntaxTree',
+
+        processComment: function (node) {
+            var lastChild, trailingComments;
+
+            if (node.type === Syntax.Program) {
+                if (node.body.length > 0) {
+                    return;
+                }
+            }
+
+            if (extra.trailingComments.length > 0) {
+                if (extra.trailingComments[0].range[0] >= node.range[1]) {
+                    trailingComments = extra.trailingComments;
+                    extra.trailingComments = [];
+                } else {
+                    extra.trailingComments.length = 0;
+                }
+            } else {
+                if (extra.bottomRightStack.length > 0 &&
+                        extra.bottomRightStack[extra.bottomRightStack.length - 1].trailingComments &&
+                        extra.bottomRightStack[extra.bottomRightStack.length - 1].trailingComments[0].range[0] >= node.range[1]) {
+                    trailingComments = extra.bottomRightStack[extra.bottomRightStack.length - 1].trailingComments;
+                    delete extra.bottomRightStack[extra.bottomRightStack.length - 1].trailingComments;
+                }
+            }
+
+            // Eating the stack.
+            while (extra.bottomRightStack.length > 0 && extra.bottomRightStack[extra.bottomRightStack.length - 1].range[0] >= node.range[0]) {
+                lastChild = extra.bottomRightStack.pop();
+            }
+
+            if (lastChild) {
+                if (lastChild.leadingComments && lastChild.leadingComments[lastChild.leadingComments.length - 1].range[1] <= node.range[0]) {
+                    node.leadingComments = lastChild.leadingComments;
+                    delete lastChild.leadingComments;
+                }
+            } else if (extra.leadingComments.length > 0 && extra.leadingComments[extra.leadingComments.length - 1].range[1] <= node.range[0]) {
+                node.leadingComments = extra.leadingComments;
+                extra.leadingComments = [];
+            }
+
+
+            if (trailingComments) {
+                node.trailingComments = trailingComments;
+            }
+
+            extra.bottomRightStack.push(node);
+        },
+
+        markEnd: function (node, startToken) {
+            if (extra.range) {
+                node.range = [startToken.start, index];
+            }
+            if (extra.loc) {
+                node.loc = new SourceLocation(
+                    startToken.startLineNumber === undefined ?  startToken.lineNumber : startToken.startLineNumber,
+                    startToken.start - (startToken.startLineStart === undefined ?  startToken.lineStart : startToken.startLineStart),
+                    lineNumber,
+                    index - lineStart
+                );
+                this.postProcess(node);
+            }
+
+            if (extra.attachComment) {
+                this.processComment(node);
+            }
+            return node;
+        },
+
+        postProcess: function (node) {
+            if (extra.source) {
+                node.loc.source = extra.source;
+            }
+            return node;
+        },
+
+        createArrayExpression: function (elements) {
+            return {
+                type: Syntax.ArrayExpression,
+                elements: elements
+            };
+        },
+
+        createAssignmentExpression: function (operator, left, right) {
+            return {
+                type: Syntax.AssignmentExpression,
+                operator: operator,
+                left: left,
+                right: right
+            };
+        },
+
+        createBinaryExpression: function (operator, left, right) {
+            var type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression :
+                        Syntax.BinaryExpression;
+            return {
+                type: type,
+                operator: operator,
+                left: left,
+                right: right
+            };
+        },
+
+        createBlockStatement: function (body) {
+            return {
+                type: Syntax.BlockStatement,
+                body: body
+            };
+        },
+
+        createBreakStatement: function (label) {
+            return {
+                type: Syntax.BreakStatement,
+                label: label
+            };
+        },
+
+        createCallExpression: function (callee, args) {
+            return {
+                type: Syntax.CallExpression,
+                callee: callee,
+                'arguments': args
+            };
+        },
+
+        createCatchClause: function (param, body) {
+            return {
+                type: Syntax.CatchClause,
+                param: param,
+                body: body
+            };
+        },
+
+        createConditionalExpression: function (test, consequent, alternate) {
+            return {
+                type: Syntax.ConditionalExpression,
+                test: test,
+                consequent: consequent,
+                alternate: alternate
+            };
+        },
+
+        createContinueStatement: function (label) {
+            return {
+                type: Syntax.ContinueStatement,
+                label: label
+            };
+        },
+
+        createDebuggerStatement: function () {
+            return {
+                type: Syntax.DebuggerStatement
+            };
+        },
+
+        createDoWhileStatement: function (body, test) {
+            return {
+                type: Syntax.DoWhileStatement,
+                body: body,
+                test: test
+            };
+        },
+
+        createEmptyStatement: function () {
+            return {
+                type: Syntax.EmptyStatement
+            };
+        },
+
+        createExpressionStatement: function (expression) {
+            return {
+                type: Syntax.ExpressionStatement,
+                expression: expression
+            };
+        },
+
+        createForStatement: function (init, test, update, body) {
+            return {
+                type: Syntax.ForStatement,
+                init: init,
+                test: test,
+                update: update,
+                body: body
+            };
+        },
+
+        createForInStatement: function (left, right, body) {
+            return {
+                type: Syntax.ForInStatement,
+                left: left,
+                right: right,
+                body: body,
+                each: false
+            };
+        },
+
+        createFunctionDeclaration: function (id, params, defaults, body) {
+            return {
+                type: Syntax.FunctionDeclaration,
+                id: id,
+                params: params,
+                defaults: defaults,
+                body: body,
+                rest: null,
+                generator: false,
+                expression: false
+            };
+        },
+
+        createFunctionExpression: function (id, params, defaults, body) {
+            return {
+                type: Syntax.FunctionExpression,
+                id: id,
+                params: params,
+                defaults: defaults,
+                body: body,
+                rest: null,
+                generator: false,
+                expression: false
+            };
+        },
+
+        createIdentifier: function (name) {
+            return {
+                type: Syntax.Identifier,
+                name: name
+            };
+        },
+
+        createIfStatement: function (test, consequent, alternate) {
+            return {
+                type: Syntax.IfStatement,
+                test: test,
+                consequent: consequent,
+                alternate: alternate
+            };
+        },
+
+        createLabeledStatement: function (label, body) {
+            return {
+                type: Syntax.LabeledStatement,
+                label: label,
+                body: body
+            };
+        },
+
+        createLiteral: function (token) {
+            return {
+                type: Syntax.Literal,
+                value: token.value,
+                raw: source.slice(token.start, token.end)
+            };
+        },
+
+        createMemberExpression: function (accessor, object, property) {
+            return {
+                type: Syntax.MemberExpression,
+                computed: accessor === '[',
+                object: object,
+                property: property
+            };
+        },
+
+        createNewExpression: function (callee, args) {
+            return {
+                type: Syntax.NewExpression,
+                callee: callee,
+                'arguments': args
+            };
+        },
+
+        createObjectExpression: function (properties) {
+            return {
+                type: Syntax.ObjectExpression,
+                properties: properties
+            };
+        },
+
+        createPostfixExpression: function (operator, argument) {
+            return {
+                type: Syntax.UpdateExpression,
+                operator: operator,
+                argument: argument,
+                prefix: false
+            };
+        },
+
+        createProgram: function (body) {
+            return {
+                type: Syntax.Program,
+                body: body
+            };
+        },
+
+        createProperty: function (kind, key, value) {
+            return {
+                type: Syntax.Property,
+                key: key,
+                value: value,
+                kind: kind
+            };
+        },
+
+        createReturnStatement: function (argument) {
+            return {
+                type: Syntax.ReturnStatement,
+                argument: argument
+            };
+        },
+
+        createSequenceExpression: function (expressions) {
+            return {
+                type: Syntax.SequenceExpression,
+                expressions: expressions
+            };
+        },
+
+        createSwitchCase: function (test, consequent) {
+            return {
+                type: Syntax.SwitchCase,
+                test: test,
+                consequent: consequent
+            };
+        },
+
+        createSwitchStatement: function (discriminant, cases) {
+            return {
+                type: Syntax.SwitchStatement,
+                discriminant: discriminant,
+                cases: cases
+            };
+        },
+
+        createThisExpression: function () {
+            return {
+                type: Syntax.ThisExpression
+            };
+        },
+
+        createThrowStatement: function (argument) {
+            return {
+                type: Syntax.ThrowStatement,
+                argument: argument
+            };
+        },
+
+        createTryStatement: function (block, guardedHandlers, handlers, finalizer) {
+            return {
+                type: Syntax.TryStatement,
+                block: block,
+                guardedHandlers: guardedHandlers,
+                handlers: handlers,
+                finalizer: finalizer
+            };
+        },
+
+        createUnaryExpression: function (operator, argument) {
+            if (operator === '++' || operator === '--') {
+                return {
+                    type: Syntax.UpdateExpression,
+                    operator: operator,
+                    argument: argument,
+                    prefix: true
+                };
+            }
+            return {
+                type: Syntax.UnaryExpression,
+                operator: operator,
+                argument: argument,
+                prefix: true
+            };
+        },
+
+        createVariableDeclaration: function (declarations, kind) {
+            return {
+                type: Syntax.VariableDeclaration,
+                declarations: declarations,
+                kind: kind
+            };
+        },
+
+        createVariableDeclarator: function (id, init) {
+            return {
+                type: Syntax.VariableDeclarator,
+                id: id,
+                init: init
+            };
+        },
+
+        createWhileStatement: function (test, body) {
+            return {
+                type: Syntax.WhileStatement,
+                test: test,
+                body: body
+            };
+        },
+
+        createWithStatement: function (object, body) {
+            return {
+                type: Syntax.WithStatement,
+                object: object,
+                body: body
+            };
+        }
+    };
+
+    // Return true if there is a line terminator before the next token.
+
+    function peekLineTerminator() {
+        var pos, line, start, found;
+
+        pos = index;
+        line = lineNumber;
+        start = lineStart;
+        skipComment();
+        found = lineNumber !== line;
+        index = pos;
+        lineNumber = line;
+        lineStart = start;
+
+        return found;
+    }
+
+    // Throw an exception
+
+    function throwError(token, messageFormat) {
+        var error,
+            args = Array.prototype.slice.call(arguments, 2),
+            msg = messageFormat.replace(
+                /%(\d)/g,
+                function (whole, index) {
+                    assert(index < args.length, 'Message reference must be in range');
+                    return args[index];
+                }
+            );
+
+        if (typeof token.lineNumber === 'number') {
+            error = new Error('Line ' + token.lineNumber + ': ' + msg);
+            error.index = token.start;
+            error.lineNumber = token.lineNumber;
+            error.column = token.start - lineStart + 1;
+        } else {
+            error = new Error('Line ' + lineNumber + ': ' + msg);
+            error.index = index;
+            error.lineNumber = lineNumber;
+            error.column = index - lineStart + 1;
+        }
+
+        error.description = msg;
+        throw error;
+    }
+
+    function throwErrorTolerant() {
+        try {
+            throwError.apply(null, arguments);
+        } catch (e) {
+            if (extra.errors) {
+                extra.errors.push(e);
+            } else {
+                throw e;
+            }
+        }
+    }
+
+
+    // Throw an exception because of the token.
+
+    function throwUnexpected(token) {
+        if (token.type === Token.EOF) {
+            throwError(token, Messages.UnexpectedEOS);
+        }
+
+        if (token.type === Token.NumericLiteral) {
+            throwError(token, Messages.UnexpectedNumber);
+        }
+
+        if (token.type === Token.StringLiteral) {
+            throwError(token, Messages.UnexpectedString);
+        }
+
+        if (token.type === Token.Identifier) {
+            throwError(token, Messages.UnexpectedIdentifier);
+        }
+
+        if (token.type === Token.Keyword) {
+            if (isFutureReservedWord(token.value)) {
+                throwError(token, Messages.UnexpectedReserved);
+            } else if (strict && isStrictModeReservedWord(token.value)) {
+                throwErrorTolerant(token, Messages.StrictReservedWord);
+                return;
+            }
+            throwError(token, Messages.UnexpectedToken, token.value);
+        }
+
+        // BooleanLiteral, NullLiteral, or Punctuator.
+        throwError(token, Messages.UnexpectedToken, token.value);
+    }
+
+    // Expect the next token to match the specified punctuator.
+    // If not, an exception will be thrown.
+
+    function expect(value) {
+        var token = lex();
+        if (token.type !== Token.Punctuator || token.value !== value) {
+            throwUnexpected(token);
+        }
+    }
+
+    // Expect the next token to match the specified keyword.
+    // If not, an exception will be thrown.
+
+    function expectKeyword(keyword) {
+        var token = lex();
+        if (token.type !== Token.Keyword || token.value !== keyword) {
+            throwUnexpected(token);
+        }
+    }
+
+    // Return true if the next token matches the specified punctuator.
+
+    function match(value) {
+        return lookahead.type === Token.Punctuator && lookahead.value === value;
+    }
+
+    // Return true if the next token matches the specified keyword
+
+    function matchKeyword(keyword) {
+        return lookahead.type === Token.Keyword && lookahead.value === keyword;
+    }
+
+    // Return true if the next token is an assignment operator
+
+    function matchAssign() {
+        var op;
+
+        if (lookahead.type !== Token.Punctuator) {
+            return false;
+        }
+        op = lookahead.value;
+        return op === '=' ||
+            op === '*=' ||
+            op === '/=' ||
+            op === '%=' ||
+            op === '+=' ||
+            op === '-=' ||
+            op === '<<=' ||
+            op === '>>=' ||
+            op === '>>>=' ||
+            op === '&=' ||
+            op === '^=' ||
+            op === '|=';
+    }
+
+    function consumeSemicolon() {
+        var line;
+
+        // Catch the very common case first: immediately a semicolon (U+003B).
+        if (source.charCodeAt(index) === 0x3B || match(';')) {
+            lex();
+            return;
+        }
+
+        line = lineNumber;
+        skipComment();
+        if (lineNumber !== line) {
+            return;
+        }
+
+        if (lookahead.type !== Token.EOF && !match('}')) {
+            throwUnexpected(lookahead);
+        }
+    }
+
+    // Return true if provided expression is LeftHandSideExpression
+
+    function isLeftHandSide(expr) {
+        return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;
+    }
+
+    // 11.1.4 Array Initialiser
+
+    function parseArrayInitialiser() {
+        var elements = [], startToken;
+
+        startToken = lookahead;
+        expect('[');
+
+        while (!match(']')) {
+            if (match(',')) {
+                lex();
+                elements.push(null);
+            } else {
+                elements.push(parseAssignmentExpression());
+
+                if (!match(']')) {
+                    expect(',');
+                }
+            }
+        }
+
+        lex();
+
+        return delegate.markEnd(delegate.createArrayExpression(elements), startToken);
+    }
+
+    // 11.1.5 Object Initialiser
+
+    function parsePropertyFunction(param, first) {
+        var previousStrict, body, startToken;
+
+        previousStrict = strict;
+        startToken = lookahead;
+        body = parseFunctionSourceElements();
+        if (first && strict && isRestrictedWord(param[0].name)) {
+            throwErrorTolerant(first, Messages.StrictParamName);
+        }
+        strict = previousStrict;
+        return delegate.markEnd(delegate.createFunctionExpression(null, param, [], body), startToken);
+    }
+
+    function parseObjectPropertyKey() {
+        var token, startToken;
+
+        startToken = lookahead;
+        token = lex();
+
+        // Note: This function is called only from parseObjectProperty(), where
+        // EOF and Punctuator tokens are already filtered out.
+
+        if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
+            if (strict && token.octal) {
+                throwErrorTolerant(token, Messages.StrictOctalLiteral);
+            }
+            return delegate.markEnd(delegate.createLiteral(token), startToken);
+        }
+
+        return delegate.markEnd(delegate.createIdentifier(token.value), startToken);
+    }
+
+    function parseObjectProperty() {
+        var token, key, id, value, param, startToken;
+
+        token = lookahead;
+        startToken = lookahead;
+
+        if (token.type === Token.Identifier) {
+
+            id = parseObjectPropertyKey();
+
+            // Property Assignment: Getter and Setter.
+
+            if (token.value === 'get' && !match(':')) {
+                key = parseObjectPropertyKey();
+                expect('(');
+                expect(')');
+                value = parsePropertyFunction([]);
+                return delegate.markEnd(delegate.createProperty('get', key, value), startToken);
+            }
+            if (token.value === 'set' && !match(':')) {
+                key = parseObjectPropertyKey();
+                expect('(');
+                token = lookahead;
+                if (token.type !== Token.Identifier) {
+                    expect(')');
+                    throwErrorTolerant(token, Messages.UnexpectedToken, token.value);
+                    value = parsePropertyFunction([]);
+                } else {
+                    param = [ parseVariableIdentifier() ];
+                    expect(')');
+                    value = parsePropertyFunction(param, token);
+                }
+                return delegate.markEnd(delegate.createProperty('set', key, value), startToken);
+            }
+            expect(':');
+            value = parseAssignmentExpression();
+            return delegate.markEnd(delegate.createProperty('init', id, value), startToken);
+        }
+        if (token.type === Token.EOF || token.type === Token.Punctuator) {
+            throwUnexpected(token);
+        } else {
+            key = parseObjectPropertyKey();
+            expect(':');
+            value = parseAssignmentExpression();
+            return delegate.markEnd(delegate.createProperty('init', key, value), startToken);
+        }
+    }
+
+    function parseObjectInitialiser() {
+        var properties = [], property, name, key, kind, map = {}, toString = String, startToken;
+
+        startToken = lookahead;
+
+        expect('{');
+
+        while (!match('}')) {
+            property = parseObjectProperty();
+
+            if (property.key.type === Syntax.Identifier) {
+                name = property.key.name;
+            } else {
+                name = toString(property.key.value);
+            }
+            kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set;
+
+            key = '$' + name;
+            if (Object.prototype.hasOwnProperty.call(map, key)) {
+                if (map[key] === PropertyKind.Data) {
+                    if (strict && kind === PropertyKind.Data) {
+                        throwErrorTolerant({}, Messages.StrictDuplicateProperty);
+                    } else if (kind !== PropertyKind.Data) {
+                        throwErrorTolerant({}, Messages.AccessorDataProperty);
+                    }
+                } else {
+                    if (kind === PropertyKind.Data) {
+                        throwErrorTolerant({}, Messages.AccessorDataProperty);
+                    } else if (map[key] & kind) {
+                        throwErrorTolerant({}, Messages.AccessorGetSet);
+                    }
+                }
+                map[key] |= kind;
+            } else {
+                map[key] = kind;
+            }
+
+            properties.push(property);
+
+            if (!match('}')) {
+                expect(',');
+            }
+        }
+
+        expect('}');
+
+        return delegate.markEnd(delegate.createObjectExpression(properties), startToken);
+    }
+
+    // 11.1.6 The Grouping Operator
+
+    function parseGroupExpression() {
+        var expr;
+
+        expect('(');
+
+        expr = parseExpression();
+
+        expect(')');
+
+        return expr;
+    }
+
+
+    // 11.1 Primary Expressions
+
+    function parsePrimaryExpression() {
+        var type, token, expr, startToken;
+
+        if (match('(')) {
+            return parseGroupExpression();
+        }
+
+        if (match('[')) {
+            return parseArrayInitialiser();
+        }
+
+        if (match('{')) {
+            return parseObjectInitialiser();
+        }
+
+        type = lookahead.type;
+        startToken = lookahead;
+
+        if (type === Token.Identifier) {
+            expr =  delegate.createIdentifier(lex().value);
+        } else if (type === Token.StringLiteral || type === Token.NumericLiteral) {
+            if (strict && lookahead.octal) {
+                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
+            }
+            expr = delegate.createLiteral(lex());
+        } else if (type === Token.Keyword) {
+            if (matchKeyword('function')) {
+                return parseFunctionExpression();
+            }
+            if (matchKeyword('this')) {
+                lex();
+                expr = delegate.createThisExpression();
+            } else {
+                throwUnexpected(lex());
+            }
+        } else if (type === Token.BooleanLiteral) {
+            token = lex();
+            token.value = (token.value === 'true');
+            expr = delegate.createLiteral(token);
+        } else if (type === Token.NullLiteral) {
+            token = lex();
+            token.value = null;
+            expr = delegate.createLiteral(token);
+        } else if (match('/') || match('/=')) {
+            if (typeof extra.tokens !== 'undefined') {
+                expr = delegate.createLiteral(collectRegex());
+            } else {
+                expr = delegate.createLiteral(scanRegExp());
+            }
+            peek();
+        } else {
+            throwUnexpected(lex());
+        }
+
+        return delegate.markEnd(expr, startToken);
+    }
+
+    // 11.2 Left-Hand-Side Expressions
+
+    function parseArguments() {
+        var args = [];
+
+        expect('(');
+
+        if (!match(')')) {
+            while (index < length) {
+                args.push(parseAssignmentExpression());
+                if (match(')')) {
+                    break;
+                }
+                expect(',');
+            }
+        }
+
+        expect(')');
+
+        return args;
+    }
+
+    function parseNonComputedProperty() {
+        var token, startToken;
+
+        startToken = lookahead;
+        token = lex();
+
+        if (!isIdentifierName(token)) {
+            throwUnexpected(token);
+        }
+
+        return delegate.markEnd(delegate.createIdentifier(token.value), startToken);
+    }
+
+    function parseNonComputedMember() {
+        expect('.');
+
+        return parseNonComputedProperty();
+    }
+
+    function parseComputedMember() {
+        var expr;
+
+        expect('[');
+
+        expr = parseExpression();
+
+        expect(']');
+
+        return expr;
+    }
+
+    function parseNewExpression() {
+        var callee, args, startToken;
+
+        startToken = lookahead;
+        expectKeyword('new');
+        callee = parseLeftHandSideExpression();
+        args = match('(') ? parseArguments() : [];
+
+        return delegate.markEnd(delegate.createNewExpression(callee, args), startToken);
+    }
+
+    function parseLeftHandSideExpressionAllowCall() {
+        var previousAllowIn, expr, args, property, startToken;
+
+        startToken = lookahead;
+
+        previousAllowIn = state.allowIn;
+        state.allowIn = true;
+        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
+        state.allowIn = previousAllowIn;
+
+        for (;;) {
+            if (match('.')) {
+                property = parseNonComputedMember();
+                expr = delegate.createMemberExpression('.', expr, property);
+            } else if (match('(')) {
+                args = parseArguments();
+                expr = delegate.createCallExpression(expr, args);
+            } else if (match('[')) {
+                property = parseComputedMember();
+                expr = delegate.createMemberExpression('[', expr, property);
+            } else {
+                break;
+            }
+            delegate.markEnd(expr, startToken);
+        }
+
+        return expr;
+    }
+
+    function parseLeftHandSideExpression() {
+        var previousAllowIn, expr, property, startToken;
+
+        startToken = lookahead;
+
+        previousAllowIn = state.allowIn;
+        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
+        state.allowIn = previousAllowIn;
+
+        while (match('.') || match('[')) {
+            if (match('[')) {
+                property = parseComputedMember();
+                expr = delegate.createMemberExpression('[', expr, property);
+            } else {
+                property = parseNonComputedMember();
+                expr = delegate.createMemberExpression('.', expr, property);
+            }
+            delegate.markEnd(expr, startToken);
+        }
+
+        return expr;
+    }
+
+    // 11.3 Postfix Expressions
+
+    function parsePostfixExpression() {
+        var expr, token, startToken = lookahead;
+
+        expr = parseLeftHandSideExpressionAllowCall();
+
+        if (lookahead.type === Token.Punctuator) {
+            if ((match('++') || match('--')) && !peekLineTerminator()) {
+                // 11.3.1, 11.3.2
+                if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
+                    throwErrorTolerant({}, Messages.StrictLHSPostfix);
+                }
+
+                if (!isLeftHandSide(expr)) {
+                    throwErrorTolerant({}, Messages.InvalidLHSInAssignment);
+                }
+
+                token = lex();
+                expr = delegate.markEnd(delegate.createPostfixExpression(token.value, expr), startToken);
+            }
+        }
+
+        return expr;
+    }
+
+    // 11.4 Unary Operators
+
+    function parseUnaryExpression() {
+        var token, expr, startToken;
+
+        if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
+            expr = parsePostfixExpression();
+        } else if (match('++') || match('--')) {
+            startToken = lookahead;
+            token = lex();
+            expr = parseUnaryExpression();
+            // 11.4.4, 11.4.5
+            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
+                throwErrorTolerant({}, Messages.StrictLHSPrefix);
+            }
+
+            if (!isLeftHandSide(expr)) {
+                throwErrorTolerant({}, Messages.InvalidLHSInAssignment);
+            }
+
+            expr = delegate.createUnaryExpression(token.value, expr);
+            expr = delegate.markEnd(expr, startToken);
+        } else if (match('+') || match('-') || match('~') || match('!')) {
+            startToken = lookahead;
+            token = lex();
+            expr = parseUnaryExpression();
+            expr = delegate.createUnaryExpression(token.value, expr);
+            expr = delegate.markEnd(expr, startToken);
+        } else if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
+            startToken = lookahead;
+            token = lex();
+            expr = parseUnaryExpression();
+            expr = delegate.createUnaryExpression(token.value, expr);
+            expr = delegate.markEnd(expr, startToken);
+            if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
+                throwErrorTolerant({}, Messages.StrictDelete);
+            }
+        } else {
+            expr = parsePostfixExpression();
+        }
+
+        return expr;
+    }
+
+    function binaryPrecedence(token, allowIn) {
+        var prec = 0;
+
+        if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
+            return 0;
+        }
+
+        switch (token.value) {
+        case '||':
+            prec = 1;
+            break;
+
+        case '&&':
+            prec = 2;
+            break;
+
+        case '|':
+            prec = 3;
+            break;
+
+        case '^':
+            prec = 4;
+            break;
+
+        case '&':
+            prec = 5;
+            break;
+
+        case '==':
+        case '!=':
+        case '===':
+        case '!==':
+            prec = 6;
+            break;
+
+        case '<':
+        case '>':
+        case '<=':
+        case '>=':
+        case 'instanceof':
+            prec = 7;
+            break;
+
+        case 'in':
+            prec = allowIn ? 7 : 0;
+            break;
+
+        case '<<':
+        case '>>':
+        case '>>>':
+            prec = 8;
+            break;
+
+        case '+':
+        case '-':
+            prec = 9;
+            break;
+
+        case '*':
+        case '/':
+        case '%':
+            prec = 11;
+            break;
+
+        default:
+            break;
+        }
+
+        return prec;
+    }
+
+    // 11.5 Multiplicative Operators
+    // 11.6 Additive Operators
+    // 11.7 Bitwise Shift Operators
+    // 11.8 Relational Operators
+    // 11.9 Equality Operators
+    // 11.10 Binary Bitwise Operators
+    // 11.11 Binary Logical Operators
+
+    function parseBinaryExpression() {
+        var marker, markers, expr, token, prec, stack, right, operator, left, i;
+
+        marker = lookahead;
+        left = parseUnaryExpression();
+
+        token = lookahead;
+        prec = binaryPrecedence(token, state.allowIn);
+        if (prec === 0) {
+            return left;
+        }
+        token.prec = prec;
+        lex();
+
+        markers = [marker, lookahead];
+        right = parseUnaryExpression();
+
+        stack = [left, token, right];
+
+        while ((prec = binaryPrecedence(lookahead, state.allowIn)) > 0) {
+
+            // Reduce: make a binary expression from the three topmost entries.
+            while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
+                right = stack.pop();
+                operator = stack.pop().value;
+                left = stack.pop();
+                expr = delegate.createBinaryExpression(operator, left, right);
+                markers.pop();
+                marker = markers[markers.length - 1];
+                delegate.markEnd(expr, marker);
+                stack.push(expr);
+            }
+
+            // Shift.
+            token = lex();
+            token.prec = prec;
+            stack.push(token);
+            markers.push(lookahead);
+            expr = parseUnaryExpression();
+            stack.push(expr);
+        }
+
+        // Final reduce to clean-up the stack.
+        i = stack.length - 1;
+        expr = stack[i];
+        markers.pop();
+        while (i > 1) {
+            expr = delegate.createBinaryExpression(stack[i - 1].value, stack[i - 2], expr);
+            i -= 2;
+            marker = markers.pop();
+            delegate.markEnd(expr, marker);
+        }
+
+        return expr;
+    }
+
+
+    // 11.12 Conditional Operator
+
+    function parseConditionalExpression() {
+        var expr, previousAllowIn, consequent, alternate, startToken;
+
+        startToken = lookahead;
+
+        expr = parseBinaryExpression();
+
+        if (match('?')) {
+            lex();
+            previousAllowIn = state.allowIn;
+            state.allowIn = true;
+            consequent = parseAssignmentExpression();
+            state.allowIn = previousAllowIn;
+            expect(':');
+            alternate = parseAssignmentExpression();
+
+            expr = delegate.createConditionalExpression(expr, consequent, alternate);
+            delegate.markEnd(expr, startToken);
+        }
+
+        return expr;
+    }
+
+    // 11.13 Assignment Operators
+
+    function parseAssignmentExpression() {
+        var token, left, right, node, startToken;
+
+        token = lookahead;
+        startToken = lookahead;
+
+        node = left = parseConditionalExpression();
+
+        if (matchAssign()) {
+            // LeftHandSideExpression
+            if (!isLeftHandSide(left)) {
+                throwErrorTolerant({}, Messages.InvalidLHSInAssignment);
+            }
+
+            // 11.13.1
+            if (strict && left.type === Syntax.Identifier && isRestrictedWord(left.name)) {
+                throwErrorTolerant(token, Messages.StrictLHSAssignment);
+            }
+
+            token = lex();
+            right = parseAssignmentExpression();
+            node = delegate.markEnd(delegate.createAssignmentExpression(token.value, left, right), startToken);
+        }
+
+        return node;
+    }
+
+    // 11.14 Comma Operator
+
+    function parseExpression() {
+        var expr, startToken = lookahead;
+
+        expr = parseAssignmentExpression();
+
+        if (match(',')) {
+            expr = delegate.createSequenceExpression([ expr ]);
+
+            while (index < length) {
+                if (!match(',')) {
+                    break;
+                }
+                lex();
+                expr.expressions.push(parseAssignmentExpression());
+            }
+
+            delegate.markEnd(expr, startToken);
+        }
+
+        return expr;
+    }
+
+    // 12.1 Block
+
+    function parseStatementList() {
+        var list = [],
+            statement;
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            statement = parseSourceElement();
+            if (typeof statement === 'undefined') {
+                break;
+            }
+            list.push(statement);
+        }
+
+        return list;
+    }
+
+    function parseBlock() {
+        var block, startToken;
+
+        startToken = lookahead;
+        expect('{');
+
+        block = parseStatementList();
+
+        expect('}');
+
+        return delegate.markEnd(delegate.createBlockStatement(block), startToken);
+    }
+
+    // 12.2 Variable Statement
+
+    function parseVariableIdentifier() {
+        var token, startToken;
+
+        startToken = lookahead;
+        token = lex();
+
+        if (token.type !== Token.Identifier) {
+            throwUnexpected(token);
+        }
+
+        return delegate.markEnd(delegate.createIdentifier(token.value), startToken);
+    }
+
+    function parseVariableDeclaration(kind) {
+        var init = null, id, startToken;
+
+        startToken = lookahead;
+        id = parseVariableIdentifier();
+
+        // 12.2.1
+        if (strict && isRestrictedWord(id.name)) {
+            throwErrorTolerant({}, Messages.StrictVarName);
+        }
+
+        if (kind === 'const') {
+            expect('=');
+            init = parseAssignmentExpression();
+        } else if (match('=')) {
+            lex();
+            init = parseAssignmentExpression();
+        }
+
+        return delegate.markEnd(delegate.createVariableDeclarator(id, init), startToken);
+    }
+
+    function parseVariableDeclarationList(kind) {
+        var list = [];
+
+        do {
+            list.push(parseVariableDeclaration(kind));
+            if (!match(',')) {
+                break;
+            }
+            lex();
+        } while (index < length);
+
+        return list;
+    }
+
+    function parseVariableStatement() {
+        var declarations;
+
+        expectKeyword('var');
+
+        declarations = parseVariableDeclarationList();
+
+        consumeSemicolon();
+
+        return delegate.createVariableDeclaration(declarations, 'var');
+    }
+
+    // kind may be `const` or `let`
+    // Both are experimental and not in the specification yet.
+    // see http://wiki.ecmascript.org/doku.php?id=harmony:const
+    // and http://wiki.ecmascript.org/doku.php?id=harmony:let
+    function parseConstLetDeclaration(kind) {
+        var declarations, startToken;
+
+        startToken = lookahead;
+
+        expectKeyword(kind);
+
+        declarations = parseVariableDeclarationList(kind);
+
+        consumeSemicolon();
+
+        return delegate.markEnd(delegate.createVariableDeclaration(declarations, kind), startToken);
+    }
+
+    // 12.3 Empty Statement
+
+    function parseEmptyStatement() {
+        expect(';');
+        return delegate.createEmptyStatement();
+    }
+
+    // 12.4 Expression Statement
+
+    function parseExpressionStatement() {
+        var expr = parseExpression();
+        consumeSemicolon();
+        return delegate.createExpressionStatement(expr);
+    }
+
+    // 12.5 If statement
+
+    function parseIfStatement() {
+        var test, consequent, alternate;
+
+        expectKeyword('if');
+
+        expect('(');
+
+        test = parseExpression();
+
+        expect(')');
+
+        consequent = parseStatement();
+
+        if (matchKeyword('else')) {
+            lex();
+            alternate = parseStatement();
+        } else {
+            alternate = null;
+        }
+
+        return delegate.createIfStatement(test, consequent, alternate);
+    }
+
+    // 12.6 Iteration Statements
+
+    function parseDoWhileStatement() {
+        var body, test, oldInIteration;
+
+        expectKeyword('do');
+
+        oldInIteration = state.inIteration;
+        state.inIteration = true;
+
+        body = parseStatement();
+
+        state.inIteration = oldInIteration;
+
+        expectKeyword('while');
+
+        expect('(');
+
+        test = parseExpression();
+
+        expect(')');
+
+        if (match(';')) {
+            lex();
+        }
+
+        return delegate.createDoWhileStatement(body, test);
+    }
+
+    function parseWhileStatement() {
+        var test, body, oldInIteration;
+
+        expectKeyword('while');
+
+        expect('(');
+
+        test = parseExpression();
+
+        expect(')');
+
+        oldInIteration = state.inIteration;
+        state.inIteration = true;
+
+        body = parseStatement();
+
+        state.inIteration = oldInIteration;
+
+        return delegate.createWhileStatement(test, body);
+    }
+
+    function parseForVariableDeclaration() {
+        var token, declarations, startToken;
+
+        startToken = lookahead;
+        token = lex();
+        declarations = parseVariableDeclarationList();
+
+        return delegate.markEnd(delegate.createVariableDeclaration(declarations, token.value), startToken);
+    }
+
+    function parseForStatement() {
+        var init, test, update, left, right, body, oldInIteration;
+
+        init = test = update = null;
+
+        expectKeyword('for');
+
+        expect('(');
+
+        if (match(';')) {
+            lex();
+        } else {
+            if (matchKeyword('var') || matchKeyword('let')) {
+                state.allowIn = false;
+                init = parseForVariableDeclaration();
+                state.allowIn = true;
+
+                if (init.declarations.length === 1 && matchKeyword('in')) {
+                    lex();
+                    left = init;
+                    right = parseExpression();
+                    init = null;
+                }
+            } else {
+                state.allowIn = false;
+                init = parseExpression();
+                state.allowIn = true;
+
+                if (matchKeyword('in')) {
+                    // LeftHandSideExpression
+                    if (!isLeftHandSide(init)) {
+                        throwErrorTolerant({}, Messages.InvalidLHSInForIn);
+                    }
+
+                    lex();
+                    left = init;
+                    right = parseExpression();
+                    init = null;
+                }
+            }
+
+            if (typeof left === 'undefined') {
+                expect(';');
+            }
+        }
+
+        if (typeof left === 'undefined') {
+
+            if (!match(';')) {
+                test = parseExpression();
+            }
+            expect(';');
+
+            if (!match(')')) {
+                update = parseExpression();
+            }
+        }
+
+        expect(')');
+
+        oldInIteration = state.inIteration;
+        state.inIteration = true;
+
+        body = parseStatement();
+
+        state.inIteration = oldInIteration;
+
+        return (typeof left === 'undefined') ?
+                delegate.createForStatement(init, test, update, body) :
+                delegate.createForInStatement(left, right, body);
+    }
+
+    // 12.7 The continue statement
+
+    function parseContinueStatement() {
+        var label = null, key;
+
+        expectKeyword('continue');
+
+        // Optimize the most common form: 'continue;'.
+        if (source.charCodeAt(index) === 0x3B) {
+            lex();
+
+            if (!state.inIteration) {
+                throwError({}, Messages.IllegalContinue);
+            }
+
+            return delegate.createContinueStatement(null);
+        }
+
+        if (peekLineTerminator()) {
+            if (!state.inIteration) {
+                throwError({}, Messages.IllegalContinue);
+            }
+
+            return delegate.createContinueStatement(null);
+        }
+
+        if (lookahead.type === Token.Identifier) {
+            label = parseVariableIdentifier();
+
+            key = '$' + label.name;
+            if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
+                throwError({}, Messages.UnknownLabel, label.name);
+            }
+        }
+
+        consumeSemicolon();
+
+        if (label === null && !state.inIteration) {
+            throwError({}, Messages.IllegalContinue);
+        }
+
+        return delegate.createContinueStatement(label);
+    }
+
+    // 12.8 The break statement
+
+    function parseBreakStatement() {
+        var label = null, key;
+
+        expectKeyword('break');
+
+        // Catch the very common case first: immediately a semicolon (U+003B).
+        if (source.charCodeAt(index) === 0x3B) {
+            lex();
+
+            if (!(state.inIteration || state.inSwitch)) {
+                throwError({}, Messages.IllegalBreak);
+            }
+
+            return delegate.createBreakStatement(null);
+        }
+
+        if (peekLineTerminator()) {
+            if (!(state.inIteration || state.inSwitch)) {
+                throwError({}, Messages.IllegalBreak);
+            }
+
+            return delegate.createBreakStatement(null);
+        }
+
+        if (lookahead.type === Token.Identifier) {
+            label = parseVariableIdentifier();
+
+            key = '$' + label.name;
+            if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
+                throwError({}, Messages.UnknownLabel, label.name);
+            }
+        }
+
+        consumeSemicolon();
+
+        if (label === null && !(state.inIteration || state.inSwitch)) {
+            throwError({}, Messages.IllegalBreak);
+        }
+
+        return delegate.createBreakStatement(label);
+    }
+
+    // 12.9 The return statement
+
+    function parseReturnStatement() {
+        var argument = null;
+
+        expectKeyword('return');
+
+        if (!state.inFunctionBody) {
+            throwErrorTolerant({}, Messages.IllegalReturn);
+        }
+
+        // 'return' followed by a space and an identifier is very common.
+        if (source.charCodeAt(index) === 0x20) {
+            if (isIdentifierStart(source.charCodeAt(index + 1))) {
+                argument = parseExpression();
+                consumeSemicolon();
+                return delegate.createReturnStatement(argument);
+            }
+        }
+
+        if (peekLineTerminator()) {
+            return delegate.createReturnStatement(null);
+        }
+
+        if (!match(';')) {
+            if (!match('}') && lookahead.type !== Token.EOF) {
+                argument = parseExpression();
+            }
+        }
+
+        consumeSemicolon();
+
+        return delegate.createReturnStatement(argument);
+    }
+
+    // 12.10 The with statement
+
+    function parseWithStatement() {
+        var object, body;
+
+        if (strict) {
+            // TODO(ikarienator): Should we update the test cases instead?
+            skipComment();
+            throwErrorTolerant({}, Messages.StrictModeWith);
+        }
+
+        expectKeyword('with');
+
+        expect('(');
+
+        object = parseExpression();
+
+        expect(')');
+
+        body = parseStatement();
+
+        return delegate.createWithStatement(object, body);
+    }
+
+    // 12.10 The swith statement
+
+    function parseSwitchCase() {
+        var test, consequent = [], statement, startToken;
+
+        startToken = lookahead;
+        if (matchKeyword('default')) {
+            lex();
+            test = null;
+        } else {
+            expectKeyword('case');
+            test = parseExpression();
+        }
+        expect(':');
+
+        while (index < length) {
+            if (match('}') || matchKeyword('default') || matchKeyword('case')) {
+                break;
+            }
+            statement = parseStatement();
+            consequent.push(statement);
+        }
+
+        return delegate.markEnd(delegate.createSwitchCase(test, consequent), startToken);
+    }
+
+    function parseSwitchStatement() {
+        var discriminant, cases, clause, oldInSwitch, defaultFound;
+
+        expectKeyword('switch');
+
+        expect('(');
+
+        discriminant = parseExpression();
+
+        expect(')');
+
+        expect('{');
+
+        cases = [];
+
+        if (match('}')) {
+            lex();
+            return delegate.createSwitchStatement(discriminant, cases);
+        }
+
+        oldInSwitch = state.inSwitch;
+        state.inSwitch = true;
+        defaultFound = false;
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            clause = parseSwitchCase();
+            if (clause.test === null) {
+                if (defaultFound) {
+                    throwError({}, Messages.MultipleDefaultsInSwitch);
+                }
+                defaultFound = true;
+            }
+            cases.push(clause);
+        }
+
+        state.inSwitch = oldInSwitch;
+
+        expect('}');
+
+        return delegate.createSwitchStatement(discriminant, cases);
+    }
+
+    // 12.13 The throw statement
+
+    function parseThrowStatement() {
+        var argument;
+
+        expectKeyword('throw');
+
+        if (peekLineTerminator()) {
+            throwError({}, Messages.NewlineAfterThrow);
+        }
+
+        argument = parseExpression();
+
+        consumeSemicolon();
+
+        return delegate.createThrowStatement(argument);
+    }
+
+    // 12.14 The try statement
+
+    function parseCatchClause() {
+        var param, body, startToken;
+
+        startToken = lookahead;
+        expectKeyword('catch');
+
+        expect('(');
+        if (match(')')) {
+            throwUnexpected(lookahead);
+        }
+
+        param = parseVariableIdentifier();
+        // 12.14.1
+        if (strict && isRestrictedWord(param.name)) {
+            throwErrorTolerant({}, Messages.StrictCatchVariable);
+        }
+
+        expect(')');
+        body = parseBlock();
+        return delegate.markEnd(delegate.createCatchClause(param, body), startToken);
+    }
+
+    function parseTryStatement() {
+        var block, handlers = [], finalizer = null;
+
+        expectKeyword('try');
+
+        block = parseBlock();
+
+        if (matchKeyword('catch')) {
+            handlers.push(parseCatchClause());
+        }
+
+        if (matchKeyword('finally')) {
+            lex();
+            finalizer = parseBlock();
+        }
+
+        if (handlers.length === 0 && !finalizer) {
+            throwError({}, Messages.NoCatchOrFinally);
+        }
+
+        return delegate.createTryStatement(block, [], handlers, finalizer);
+    }
+
+    // 12.15 The debugger statement
+
+    function parseDebuggerStatement() {
+        expectKeyword('debugger');
+
+        consumeSemicolon();
+
+        return delegate.createDebuggerStatement();
+    }
+
+    // 12 Statements
+
+    function parseStatement() {
+        var type = lookahead.type,
+            expr,
+            labeledBody,
+            key,
+            startToken;
+
+        if (type === Token.EOF) {
+            throwUnexpected(lookahead);
+        }
+
+        if (type === Token.Punctuator && lookahead.value === '{') {
+            return parseBlock();
+        }
+
+        startToken = lookahead;
+
+        if (type === Token.Punctuator) {
+            switch (lookahead.value) {
+            case ';':
+                return delegate.markEnd(parseEmptyStatement(), startToken);
+            case '(':
+                return delegate.markEnd(parseExpressionStatement(), startToken);
+            default:
+                break;
+            }
+        }
+
+        if (type === Token.Keyword) {
+            switch (lookahead.value) {
+            case 'break':
+                return delegate.markEnd(parseBreakStatement(), startToken);
+            case 'continue':
+                return delegate.markEnd(parseContinueStatement(), startToken);
+            case 'debugger':
+                return delegate.markEnd(parseDebuggerStatement(), startToken);
+            case 'do':
+                return delegate.markEnd(parseDoWhileStatement(), startToken);
+            case 'for':
+                return delegate.markEnd(parseForStatement(), startToken);
+            case 'function':
+                return delegate.markEnd(parseFunctionDeclaration(), startToken);
+            case 'if':
+                return delegate.markEnd(parseIfStatement(), startToken);
+            case 'return':
+                return delegate.markEnd(parseReturnStatement(), startToken);
+            case 'switch':
+                return delegate.markEnd(parseSwitchStatement(), startToken);
+            case 'throw':
+                return delegate.markEnd(parseThrowStatement(), startToken);
+            case 'try':
+                return delegate.markEnd(parseTryStatement(), startToken);
+            case 'var':
+                return delegate.markEnd(parseVariableStatement(), startToken);
+            case 'while':
+                return delegate.markEnd(parseWhileStatement(), startToken);
+            case 'with':
+                return delegate.markEnd(parseWithStatement(), startToken);
+            default:
+                break;
+            }
+        }
+
+        expr = parseExpression();
+
+        // 12.12 Labelled Statements
+        if ((expr.type === Syntax.Identifier) && match(':')) {
+            lex();
+
+            key = '$' + expr.name;
+            if (Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
+                throwError({}, Messages.Redeclaration, 'Label', expr.name);
+            }
+
+            state.labelSet[key] = true;
+            labeledBody = parseStatement();
+            delete state.labelSet[key];
+            return delegate.markEnd(delegate.createLabeledStatement(expr, labeledBody), startToken);
+        }
+
+        consumeSemicolon();
+
+        return delegate.markEnd(delegate.createExpressionStatement(expr), startToken);
+    }
+
+    // 13 Function Definition
+
+    function parseFunctionSourceElements() {
+        var sourceElement, sourceElements = [], token, directive, firstRestricted,
+            oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody, startToken;
+
+        startToken = lookahead;
+        expect('{');
+
+        while (index < length) {
+            if (lookahead.type !== Token.StringLiteral) {
+                break;
+            }
+            token = lookahead;
+
+            sourceElement = parseSourceElement();
+            sourceElements.push(sourceElement);
+            if (sourceElement.expression.type !== Syntax.Literal) {
+                // this is not directive
+                break;
+            }
+            directive = source.slice(token.start + 1, token.end - 1);
+            if (directive === 'use strict') {
+                strict = true;
+                if (firstRestricted) {
+                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
+                }
+            } else {
+                if (!firstRestricted && token.octal) {
+                    firstRestricted = token;
+                }
+            }
+        }
+
+        oldLabelSet = state.labelSet;
+        oldInIteration = state.inIteration;
+        oldInSwitch = state.inSwitch;
+        oldInFunctionBody = state.inFunctionBody;
+
+        state.labelSet = {};
+        state.inIteration = false;
+        state.inSwitch = false;
+        state.inFunctionBody = true;
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            sourceElement = parseSourceElement();
+            if (typeof sourceElement === 'undefined') {
+                break;
+            }
+            sourceElements.push(sourceElement);
+        }
+
+        expect('}');
+
+        state.labelSet = oldLabelSet;
+        state.inIteration = oldInIteration;
+        state.inSwitch = oldInSwitch;
+        state.inFunctionBody = oldInFunctionBody;
+
+        return delegate.markEnd(delegate.createBlockStatement(sourceElements), startToken);
+    }
+
+    function parseParams(firstRestricted) {
+        var param, params = [], token, stricted, paramSet, key, message;
+        expect('(');
+
+        if (!match(')')) {
+            paramSet = {};
+            while (index < length) {
+                token = lookahead;
+                param = parseVariableIdentifier();
+                key = '$' + token.value;
+                if (strict) {
+                    if (isRestrictedWord(token.value)) {
+                        stricted = token;
+                        message = Messages.StrictParamName;
+                    }
+                    if (Object.prototype.hasOwnProperty.call(paramSet, key)) {
+                        stricted = token;
+                        message = Messages.StrictParamDupe;
+                    }
+                } else if (!firstRestricted) {
+                    if (isRestrictedWord(token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictParamName;
+                    } else if (isStrictModeReservedWord(token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictReservedWord;
+                    } else if (Object.prototype.hasOwnProperty.call(paramSet, key)) {
+                        firstRestricted = token;
+                        message = Messages.StrictParamDupe;
+                    }
+                }
+                params.push(param);
+                paramSet[key] = true;
+                if (match(')')) {
+                    break;
+                }
+                expect(',');
+            }
+        }
+
+        expect(')');
+
+        return {
+            params: params,
+            stricted: stricted,
+            firstRestricted: firstRestricted,
+            message: message
+        };
+    }
+
+    function parseFunctionDeclaration() {
+        var id, params = [], body, token, stricted, tmp, firstRestricted, message, previousStrict, startToken;
+
+        startToken = lookahead;
+
+        expectKeyword('function');
+        token = lookahead;
+        id = parseVariableIdentifier();
+        if (strict) {
+            if (isRestrictedWord(token.value)) {
+                throwErrorTolerant(token, Messages.StrictFunctionName);
+            }
+        } else {
+            if (isRestrictedWord(token.value)) {
+                firstRestricted = token;
+                message = Messages.StrictFunctionName;
+            } else if (isStrictModeReservedWord(token.value)) {
+                firstRestricted = token;
+                message = Messages.StrictReservedWord;
+            }
+        }
+
+        tmp = parseParams(firstRestricted);
+        params = tmp.params;
+        stricted = tmp.stricted;
+        firstRestricted = tmp.firstRestricted;
+        if (tmp.message) {
+            message = tmp.message;
+        }
+
+        previousStrict = strict;
+        body = parseFunctionSourceElements();
+        if (strict && firstRestricted) {
+            throwError(firstRestricted, message);
+        }
+        if (strict && stricted) {
+            throwErrorTolerant(stricted, message);
+        }
+        strict = previousStrict;
+
+        return delegate.markEnd(delegate.createFunctionDeclaration(id, params, [], body), startToken);
+    }
+
+    function parseFunctionExpression() {
+        var token, id = null, stricted, firstRestricted, message, tmp, params = [], body, previousStrict, startToken;
+
+        startToken = lookahead;
+        expectKeyword('function');
+
+        if (!match('(')) {
+            token = lookahead;
+            id = parseVariableIdentifier();
+            if (strict) {
+                if (isRestrictedWord(token.value)) {
+                    throwErrorTolerant(token, Messages.StrictFunctionName);
+                }
+            } else {
+                if (isRestrictedWord(token.value)) {
+                    firstRestricted = token;
+                    message = Messages.StrictFunctionName;
+                } else if (isStrictModeReservedWord(token.value)) {
+                    firstRestricted = token;
+                    message = Messages.StrictReservedWord;
+                }
+            }
+        }
+
+        tmp = parseParams(firstRestricted);
+        params = tmp.params;
+        stricted = tmp.stricted;
+        firstRestricted = tmp.firstRestricted;
+        if (tmp.message) {
+            message = tmp.message;
+        }
+
+        previousStrict = strict;
+        body = parseFunctionSourceElements();
+        if (strict && firstRestricted) {
+            throwError(firstRestricted, message);
+        }
+        if (strict && stricted) {
+            throwErrorTolerant(stricted, message);
+        }
+        strict = previousStrict;
+
+        return delegate.markEnd(delegate.createFunctionExpression(id, params, [], body), startToken);
+    }
+
+    // 14 Program
+
+    function parseSourceElement() {
+        if (lookahead.type === Token.Keyword) {
+            switch (lookahead.value) {
+            case 'const':
+            case 'let':
+                return parseConstLetDeclaration(lookahead.value);
+            case 'function':
+                return parseFunctionDeclaration();
+            default:
+                return parseStatement();
+            }
+        }
+
+        if (lookahead.type !== Token.EOF) {
+            return parseStatement();
+        }
+    }
+
+    function parseSourceElements() {
+        var sourceElement, sourceElements = [], token, directive, firstRestricted;
+
+        while (index < length) {
+            token = lookahead;
+            if (token.type !== Token.StringLiteral) {
+                break;
+            }
+
+            sourceElement = parseSourceElement();
+            sourceElements.push(sourceElement);
+            if (sourceElement.expression.type !== Syntax.Literal) {
+                // this is not directive
+                break;
+            }
+            directive = source.slice(token.start + 1, token.end - 1);
+            if (directive === 'use strict') {
+                strict = true;
+                if (firstRestricted) {
+                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
+                }
+            } else {
+                if (!firstRestricted && token.octal) {
+                    firstRestricted = token;
+                }
+            }
+        }
+
+        while (index < length) {
+            sourceElement = parseSourceElement();
+            /* istanbul ignore if */
+            if (typeof sourceElement === 'undefined') {
+                break;
+            }
+            sourceElements.push(sourceElement);
+        }
+        return sourceElements;
+    }
+
+    function parseProgram() {
+        var body, startToken;
+
+        skipComment();
+        peek();
+        startToken = lookahead;
+        strict = false;
+
+        body = parseSourceElements();
+        return delegate.markEnd(delegate.createProgram(body), startToken);
+    }
+
+    function filterTokenLocation() {
+        var i, entry, token, tokens = [];
+
+        for (i = 0; i < extra.tokens.length; ++i) {
+            entry = extra.tokens[i];
+            token = {
+                type: entry.type,
+                value: entry.value
+            };
+            if (extra.range) {
+                token.range = entry.range;
+            }
+            if (extra.loc) {
+                token.loc = entry.loc;
+            }
+            tokens.push(token);
+        }
+
+        extra.tokens = tokens;
+    }
+
+    function tokenize(code, options) {
+        var toString,
+            token,
+            tokens;
+
+        toString = String;
+        if (typeof code !== 'string' && !(code instanceof String)) {
+            code = toString(code);
+        }
+
+        delegate = SyntaxTreeDelegate;
+        source = code;
+        index = 0;
+        lineNumber = (source.length > 0) ? 1 : 0;
+        lineStart = 0;
+        length = source.length;
+        lookahead = null;
+        state = {
+            allowIn: true,
+            labelSet: {},
+            inFunctionBody: false,
+            inIteration: false,
+            inSwitch: false,
+            lastCommentStart: -1
+        };
+
+        extra = {};
+
+        // Options matching.
+        options = options || {};
+
+        // Of course we collect tokens here.
+        options.tokens = true;
+        extra.tokens = [];
+        extra.tokenize = true;
+        // The following two fields are necessary to compute the Regex tokens.
+        extra.openParenToken = -1;
+        extra.openCurlyToken = -1;
+
+        extra.range = (typeof options.range === 'boolean') && options.range;
+        extra.loc = (typeof options.loc === 'boolean') && options.loc;
+
+        if (typeof options.comment === 'boolean' && options.comment) {
+            extra.comments = [];
+        }
+        if (typeof options.tolerant === 'boolean' && options.tolerant) {
+            extra.errors = [];
+        }
+
+        try {
+            peek();
+            if (lookahead.type === Token.EOF) {
+                return extra.tokens;
+            }
+
+            token = lex();
+            while (lookahead.type !== Token.EOF) {
+                try {
+                    token = lex();
+                } catch (lexError) {
+                    token = lookahead;
+                    if (extra.errors) {
+                        extra.errors.push(lexError);
+                        // We have to break on the first error
+                        // to avoid infinite loops.
+                        break;
+                    } else {
+                        throw lexError;
+                    }
+                }
+            }
+
+            filterTokenLocation();
+            tokens = extra.tokens;
+            if (typeof extra.comments !== 'undefined') {
+                tokens.comments = extra.comments;
+            }
+            if (typeof extra.errors !== 'undefined') {
+                tokens.errors = extra.errors;
+            }
+        } catch (e) {
+            throw e;
+        } finally {
+            extra = {};
+        }
+        return tokens;
+    }
+
+    function parse(code, options) {
+        var program, toString;
+
+        toString = String;
+        if (typeof code !== 'string' && !(code instanceof String)) {
+            code = toString(code);
+        }
+
+        delegate = SyntaxTreeDelegate;
+        source = code;
+        index = 0;
+        lineNumber = (source.length > 0) ? 1 : 0;
+        lineStart = 0;
+        length = source.length;
+        lookahead = null;
+        state = {
+            allowIn: true,
+            labelSet: {},
+            inFunctionBody: false,
+            inIteration: false,
+            inSwitch: false,
+            lastCommentStart: -1
+        };
+
+        extra = {};
+        if (typeof options !== 'undefined') {
+            extra.range = (typeof options.range === 'boolean') && options.range;
+            extra.loc = (typeof options.loc === 'boolean') && options.loc;
+            extra.attachComment = (typeof options.attachComment === 'boolean') && options.attachComment;
+
+            if (extra.loc && options.source !== null && options.source !== undefined) {
+                extra.source = toString(options.source);
+            }
+
+            if (typeof options.tokens === 'boolean' && options.tokens) {
+                extra.tokens = [];
+            }
+            if (typeof options.comment === 'boolean' && options.comment) {
+                extra.comments = [];
+            }
+            if (typeof options.tolerant === 'boolean' && options.tolerant) {
+                extra.errors = [];
+            }
+            if (extra.attachComment) {
+                extra.range = true;
+                extra.comments = [];
+                extra.bottomRightStack = [];
+                extra.trailingComments = [];
+                extra.leadingComments = [];
+            }
+        }
+
+        try {
+            program = parseProgram();
+            if (typeof extra.comments !== 'undefined') {
+                program.comments = extra.comments;
+            }
+            if (typeof extra.tokens !== 'undefined') {
+                filterTokenLocation();
+                program.tokens = extra.tokens;
+            }
+            if (typeof extra.errors !== 'undefined') {
+                program.errors = extra.errors;
+            }
+        } catch (e) {
+            throw e;
+        } finally {
+            extra = {};
+        }
+
+        return program;
+    }
+
+    // Sync with *.json manifests.
+    exports.version = '1.2.2';
+
+    exports.tokenize = tokenize;
+
+    exports.parse = parse;
+
+    // Deep copy.
+   /* istanbul ignore next */
+    exports.Syntax = (function () {
+        var name, types = {};
+
+        if (typeof Object.create === 'function') {
+            types = Object.create(null);
+        }
+
+        for (name in Syntax) {
+            if (Syntax.hasOwnProperty(name)) {
+                types[name] = Syntax[name];
+            }
+        }
+
+        if (typeof Object.freeze === 'function') {
+            Object.freeze(types);
+        }
+
+        return types;
+    }());
+
+}));
+/* vim: set sw=4 ts=4 et tw=80 : */
+
+},{}],7:[function(require,module,exports){
+/*
+  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>
+  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+/*jslint vars:false, bitwise:true*/
+/*jshint indent:4*/
+/*global exports:true, define:true*/
+(function (root, factory) {
+    'use strict';
+
+    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
+    // and plain browser loading,
+    if (typeof define === 'function' && define.amd) {
+        define(['exports'], factory);
+    } else if (typeof exports !== 'undefined') {
+        factory(exports);
+    } else {
+        factory((root.estraverse = {}));
+    }
+}(this, function (exports) {
+    'use strict';
+
+    var Syntax,
+        isArray,
+        VisitorOption,
+        VisitorKeys,
+        BREAK,
+        SKIP;
+
+    Syntax = {
+        AssignmentExpression: 'AssignmentExpression',
+        ArrayExpression: 'ArrayExpression',
+        ArrayPattern: 'ArrayPattern',
+        ArrowFunctionExpression: 'ArrowFunctionExpression',
+        BlockStatement: 'BlockStatement',
+        BinaryExpression: 'BinaryExpression',
+        BreakStatement: 'BreakStatement',
+        CallExpression: 'CallExpression',
+        CatchClause: 'CatchClause',
+        ClassBody: 'ClassBody',
+        ClassDeclaration: 'ClassDeclaration',
+        ClassExpression: 'ClassExpression',
+        ConditionalExpression: 'ConditionalExpression',
+        ContinueStatement: 'ContinueStatement',
+        DebuggerStatement: 'DebuggerStatement',
+        DirectiveStatement: 'DirectiveStatement',
+        DoWhileStatement: 'DoWhileStatement',
+        EmptyStatement: 'EmptyStatement',
+        ExpressionStatement: 'ExpressionStatement',
+        ForStatement: 'ForStatement',
+        ForInStatement: 'ForInStatement',
+        FunctionDeclaration: 'FunctionDeclaration',
+        FunctionExpression: 'FunctionExpression',
+        Identifier: 'Identifier',
+        IfStatement: 'IfStatement',
+        Literal: 'Literal',
+        LabeledStatement: 'LabeledStatement',
+        LogicalExpression: 'LogicalExpression',
+        MemberExpression: 'MemberExpression',
+        MethodDefinition: 'MethodDefinition',
+        NewExpression: 'NewExpression',
+        ObjectExpression: 'ObjectExpression',
+        ObjectPattern: 'ObjectPattern',
+        Program: 'Program',
+        Property: 'Property',
+        ReturnStatement: 'ReturnStatement',
+        SequenceExpression: 'SequenceExpression',
+        SwitchStatement: 'SwitchStatement',
+        SwitchCase: 'SwitchCase',
+        ThisExpression: 'ThisExpression',
+        ThrowStatement: 'ThrowStatement',
+        TryStatement: 'TryStatement',
+        UnaryExpression: 'UnaryExpression',
+        UpdateExpression: 'UpdateExpression',
+        VariableDeclaration: 'VariableDeclaration',
+        VariableDeclarator: 'VariableDeclarator',
+        WhileStatement: 'WhileStatement',
+        WithStatement: 'WithStatement',
+        YieldExpression: 'YieldExpression'
+    };
+
+    function ignoreJSHintError() { }
+
+    isArray = Array.isArray;
+    if (!isArray) {
+        isArray = function isArray(array) {
+            return Object.prototype.toString.call(array) === '[object Array]';
+        };
+    }
+
+    function deepCopy(obj) {
+        var ret = {}, key, val;
+        for (key in obj) {
+            if (obj.hasOwnProperty(key)) {
+                val = obj[key];
+                if (typeof val === 'object' && val !== null) {
+                    ret[key] = deepCopy(val);
+                } else {
+                    ret[key] = val;
+                }
+            }
+        }
+        return ret;
+    }
+
+    function shallowCopy(obj) {
+        var ret = {}, key;
+        for (key in obj) {
+            if (obj.hasOwnProperty(key)) {
+                ret[key] = obj[key];
+            }
+        }
+        return ret;
+    }
+    ignoreJSHintError(shallowCopy);
+
+    // based on LLVM libc++ upper_bound / lower_bound
+    // MIT License
+
+    function upperBound(array, func) {
+        var diff, len, i, current;
+
+        len = array.length;
+        i = 0;
+
+        while (len) {
+            diff = len >>> 1;
+            current = i + diff;
+            if (func(array[current])) {
+                len = diff;
+            } else {
+                i = current + 1;
+                len -= diff + 1;
+            }
+        }
+        return i;
+    }
+
+    function lowerBound(array, func) {
+        var diff, len, i, current;
+
+        len = array.length;
+        i = 0;
+
+        while (len) {
+            diff = len >>> 1;
+            current = i + diff;
+            if (func(array[current])) {
+                i = current + 1;
+                len -= diff + 1;
+            } else {
+                len = diff;
+            }
+        }
+        return i;
+    }
+    ignoreJSHintError(lowerBound);
+
+    VisitorKeys = {
+        AssignmentExpression: ['left', 'right'],
+        ArrayExpression: ['elements'],
+        ArrayPattern: ['elements'],
+        ArrowFunctionExpression: ['params', 'defaults', 'rest', 'body'],
+        BlockStatement: ['body'],
+        BinaryExpression: ['left', 'right'],
+        BreakStatement: ['label'],
+        CallExpression: ['callee', 'arguments'],
+        CatchClause: ['param', 'body'],
+        ClassBody: ['body'],
+        ClassDeclaration: ['id', 'body', 'superClass'],
+        ClassExpression: ['id', 'body', 'superClass'],
+        ConditionalExpression: ['test', 'consequent', 'alternate'],
+        ContinueStatement: ['label'],
+        DebuggerStatement: [],
+        DirectiveStatement: [],
+        DoWhileStatement: ['body', 'test'],
+        EmptyStatement: [],
+        ExpressionStatement: ['expression'],
+        ForStatement: ['init', 'test', 'update', 'body'],
+        ForInStatement: ['left', 'right', 'body'],
+        ForOfStatement: ['left', 'right', 'body'],
+        FunctionDeclaration: ['id', 'params', 'defaults', 'rest', 'body'],
+        FunctionExpression: ['id', 'params', 'defaults', 'rest', 'body'],
+        Identifier: [],
+        IfStatement: ['test', 'consequent', 'alternate'],
+        Literal: [],
+        LabeledStatement: ['label', 'body'],
+        LogicalExpression: ['left', 'right'],
+        MemberExpression: ['object', 'property'],
+        MethodDefinition: ['key', 'value'],
+        NewExpression: ['callee', 'arguments'],
+        ObjectExpression: ['properties'],
+        ObjectPattern: ['properties'],
+        Program: ['body'],
+        Property: ['key', 'value'],
+        ReturnStatement: ['argument'],
+        SequenceExpression: ['expressions'],
+        SwitchStatement: ['discriminant', 'cases'],
+        SwitchCase: ['test', 'consequent'],
+        ThisExpression: [],
+        ThrowStatement: ['argument'],
+        TryStatement: ['block', 'handlers', 'handler', 'guardedHandlers', 'finalizer'],
+        UnaryExpression: ['argument'],
+        UpdateExpression: ['argument'],
+        VariableDeclaration: ['declarations'],
+        VariableDeclarator: ['id', 'init'],
+        WhileStatement: ['test', 'body'],
+        WithStatement: ['object', 'body'],
+        YieldExpression: ['argument']
+    };
+
+    // unique id
+    BREAK = {};
+    SKIP = {};
+
+    VisitorOption = {
+        Break: BREAK,
+        Skip: SKIP
+    };
+
+    function Reference(parent, key) {
+        this.parent = parent;
+        this.key = key;
+    }
+
+    Reference.prototype.replace = function replace(node) {
+        this.parent[this.key] = node;
+    };
+
+    function Element(node, path, wrap, ref) {
+        this.node = node;
+        this.path = path;
+        this.wrap = wrap;
+        this.ref = ref;
+    }
+
+    function Controller() { }
+
+    // API:
+    // return property path array from root to current node
+    Controller.prototype.path = function path() {
+        var i, iz, j, jz, result, element;
+
+        function addToPath(result, path) {
+            if (isArray(path)) {
+                for (j = 0, jz = path.length; j < jz; ++j) {
+                    result.push(path[j]);
+                }
+            } else {
+                result.push(path);
+            }
+        }
+
+        // root node
+        if (!this.__current.path) {
+            return null;
+        }
+
+        // first node is sentinel, second node is root element
+        result = [];
+        for (i = 2, iz = this.__leavelist.length; i < iz; ++i) {
+            element = this.__leavelist[i];
+            addToPath(result, element.path);
+        }
+        addToPath(result, this.__current.path);
+        return result;
+    };
+
+    // API:
+    // return array of parent elements
+    Controller.prototype.parents = function parents() {
+        var i, iz, result;
+
+        // first node is sentinel
+        result = [];
+        for (i = 1, iz = this.__leavelist.length; i < iz; ++i) {
+            result.push(this.__leavelist[i].node);
+        }
+
+        return result;
+    };
+
+    // API:
+    // return current node
+    Controller.prototype.current = function current() {
+        return this.__current.node;
+    };
+
+    Controller.prototype.__execute = function __execute(callback, element) {
+        var previous, result;
+
+        result = undefined;
+
+        previous  = this.__current;
+        this.__current = element;
+        this.__state = null;
+        if (callback) {
+            result = callback.call(this, element.node, this.__leavelist[this.__leavelist.length - 1].node);
+        }
+        this.__current = previous;
+
+        return result;
+    };
+
+    // API:
+    // notify control skip / break
+    Controller.prototype.notify = function notify(flag) {
+        this.__state = flag;
+    };
+
+    // API:
+    // skip child nodes of current node
+    Controller.prototype.skip = function () {
+        this.notify(SKIP);
+    };
+
+    // API:
+    // break traversals
+    Controller.prototype['break'] = function () {
+        this.notify(BREAK);
+    };
+
+    Controller.prototype.__initialize = function(root, visitor) {
+        this.visitor = visitor;
+        this.root = root;
+        this.__worklist = [];
+        this.__leavelist = [];
+        this.__current = null;
+        this.__state = null;
+    };
+
+    Controller.prototype.traverse = function traverse(root, visitor) {
+        var worklist,
+            leavelist,
+            element,
+            node,
+            nodeType,
+            ret,
+            key,
+            current,
+            current2,
+            candidates,
+            candidate,
+            sentinel;
+
+        this.__initialize(root, visitor);
+
+        sentinel = {};
+
+        // reference
+        worklist = this.__worklist;
+        leavelist = this.__leavelist;
+
+        // initialize
+        worklist.push(new Element(root, null, null, null));
+        leavelist.push(new Element(null, null, null, null));
+
+        while (worklist.length) {
+            element = worklist.pop();
+
+            if (element === sentinel) {
+                element = leavelist.pop();
+
+                ret = this.__execute(visitor.leave, element);
+
+                if (this.__state === BREAK || ret === BREAK) {
+                    return;
+                }
+                continue;
+            }
+
+            if (element.node) {
+
+                ret = this.__execute(visitor.enter, element);
+
+                if (this.__state === BREAK || ret === BREAK) {
+                    return;
+                }
+
+                worklist.push(sentinel);
+                leavelist.push(element);
+
+                if (this.__state === SKIP || ret === SKIP) {
+                    continue;
+                }
+
+                node = element.node;
+                nodeType = element.wrap || node.type;
+                candidates = VisitorKeys[nodeType];
+
+                current = candidates.length;
+                while ((current -= 1) >= 0) {
+                    key = candidates[current];
+                    candidate = node[key];
+                    if (!candidate) {
+                        continue;
+                    }
+
+                    if (!isArray(candidate)) {
+                        worklist.push(new Element(candidate, key, null, null));
+                        continue;
+                    }
+
+                    current2 = candidate.length;
+                    while ((current2 -= 1) >= 0) {
+                        if (!candidate[current2]) {
+                            continue;
+                        }
+                        if ((nodeType === Syntax.ObjectExpression || nodeType === Syntax.ObjectPattern) && 'properties' === candidates[current]) {
+                            element = new Element(candidate[current2], [key, current2], 'Property', null);
+                        } else {
+                            element = new Element(candidate[current2], [key, current2], null, null);
+                        }
+                        worklist.push(element);
+                    }
+                }
+            }
+        }
+    };
+
+    Controller.prototype.replace = function replace(root, visitor) {
+        var worklist,
+            leavelist,
+            node,
+            nodeType,
+            target,
+            element,
+            current,
+            current2,
+            candidates,
+            candidate,
+            sentinel,
+            outer,
+            key;
+
+        this.__initialize(root, visitor);
+
+        sentinel = {};
+
+        // reference
+        worklist = this.__worklist;
+        leavelist = this.__leavelist;
+
+        // initialize
+        outer = {
+            root: root
+        };
+        element = new Element(root, null, null, new Reference(outer, 'root'));
+        worklist.push(element);
+        leavelist.push(element);
+
+        while (worklist.length) {
+            element = worklist.pop();
+
+            if (element === sentinel) {
+                element = leavelist.pop();
+
+                target = this.__execute(visitor.leave, element);
+
+                // node may be replaced with null,
+                // so distinguish between undefined and null in this place
+                if (target !== undefined && target !== BREAK && target !== SKIP) {
+                    // replace
+                    element.ref.replace(target);
+                }
+
+                if (this.__state === BREAK || target === BREAK) {
+                    return outer.root;
+                }
+                continue;
+            }
+
+            target = this.__execute(visitor.enter, element);
+
+            // node may be replaced with null,
+            // so distinguish between undefined and null in this place
+            if (target !== undefined && target !== BREAK && target !== SKIP) {
+                // replace
+                element.ref.replace(target);
+                e