[Pkg-javascript-commits] [node-es5-shim] 02/04: Imported Upstream version 4.5.9

Julien Puydt julien.puydt at laposte.net
Sat Jun 18 07:40:14 UTC 2016


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jpuydt-guest pushed a commit to branch master
in repository node-es5-shim.

commit 14e7cdcaa5ae33ec586355433f376b384f2eb78f
Author: Julien Puydt <julien.puydt at laposte.net>
Date:   Sat Jun 18 09:09:51 2016 +0200

    Imported Upstream version 4.5.9
---
 .eslintrc                |    1 +
 .jscs.json               |   10 +-
 .travis.yml              |    7 +
 CHANGES                  |    5 +
 es5-sham.js              |  944 ++++++------
 es5-sham.map             |    2 +-
 es5-sham.min.js          |    4 +-
 es5-shim.js              | 3690 +++++++++++++++++++++++-----------------------
 es5-shim.map             |    2 +-
 es5-shim.min.js          |    4 +-
 package.json             |   10 +-
 tests/lib/jasmine.js     |    8 +-
 tests/spec/s-array.js    |   90 +-
 tests/spec/s-date.js     |    2 +-
 tests/spec/s-error.js    |    2 +-
 tests/spec/s-function.js |    2 +-
 tests/spec/s-global.js   |   30 +-
 tests/spec/s-number.js   |    6 +-
 tests/spec/s-object.js   |   92 +-
 tests/spec/s-regexp.js   |   28 +-
 tests/spec/s-string.js   |   48 +-
 21 files changed, 2519 insertions(+), 2468 deletions(-)

diff --git a/.eslintrc b/.eslintrc
index d362d1d..d45be18 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -9,6 +9,7 @@
 		"dot-notation": [2, { "allowKeywords": false }],
 		"eqeqeq": [2, "allow-null"],
 		"id-length": [2, { "min": 1, "max": 40 }],
+		"indent": [2, 4],
 		"max-nested-callbacks": [2, 5],
 		"max-params": [2, 7],
 		"max-statements": [1, 30],
diff --git a/.jscs.json b/.jscs.json
index 94e1055..1cad677 100644
--- a/.jscs.json
+++ b/.jscs.json
@@ -44,7 +44,7 @@
 
 	"disallowSpacesInsideArrayBrackets": true,
 
-	"disallowQuotedKeysInObjects": "allButReserved",
+	"disallowQuotedKeysInObjects": { "allExcept": ["reserved"] },
 
 	"disallowSpaceAfterObjectKeys": true,
 
@@ -164,6 +164,12 @@
 
     "disallowArrayDestructuringReturn": false,
 
-    "requireNewlineBeforeSingleStatementsInIf": false
+    "requireNewlineBeforeSingleStatementsInIf": false,
+
+	"disallowUnusedVariables": true,
+
+	"requireSpacesInsideImportedObjectBraces": true,
+
+	"requireUseStrict": false
 }
 
diff --git a/.travis.yml b/.travis.yml
index 853c56f..e9f887b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,9 @@
 language: node_js
 node_js:
+  - "6.2"
+  - "6.1"
+  - "6.0"
+  - "5.11"
   - "5.10"
   - "5.9"
   - "5.8"
@@ -51,6 +55,9 @@ sudo: false
 matrix:
   fast_finish: true
   allow_failures:
+    - node_js: "6.1"
+    - node_js: "6.0"
+    - node_js: "5.10"
     - node_js: "5.9"
     - node_js: "5.8"
     - node_js: "5.7"
diff --git a/CHANGES b/CHANGES
index 36b87bb..91f5d7a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,8 @@
+4.5.9
+  - [Fix] parseInt and parseFloat should both accept null/undefined (#402)
+  - [Tests] up to `node` `v6.2`
+  - [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `jscs`, `concurrently`
+
 4.5.8
   - [Fix] Check if property descriptor is configurable before re-defining it (#394, #373)
   - [Dev Deps] update `eslint`, `jscs`, `@ljharb/eslint-config`
diff --git a/es5-sham.js b/es5-sham.js
index 2de88d4..580cdde 100644
--- a/es5-sham.js
+++ b/es5-sham.js
@@ -26,532 +26,538 @@
     } else {
         // Browser globals (root is window)
         root.returnExports = factory();
-  }
+    }
 }(this, function () {
 
-var call = Function.call;
-var prototypeOfObject = Object.prototype;
-var owns = call.bind(prototypeOfObject.hasOwnProperty);
-var isEnumerable = call.bind(prototypeOfObject.propertyIsEnumerable);
-var toStr = call.bind(prototypeOfObject.toString);
-
-// If JS engine supports accessors creating shortcuts.
-var defineGetter;
-var defineSetter;
-var lookupGetter;
-var lookupSetter;
-var supportsAccessors = owns(prototypeOfObject, '__defineGetter__');
-if (supportsAccessors) {
-    /* eslint-disable no-underscore-dangle */
-    defineGetter = call.bind(prototypeOfObject.__defineGetter__);
-    defineSetter = call.bind(prototypeOfObject.__defineSetter__);
-    lookupGetter = call.bind(prototypeOfObject.__lookupGetter__);
-    lookupSetter = call.bind(prototypeOfObject.__lookupSetter__);
-    /* eslint-enable no-underscore-dangle */
-}
-
-// ES5 15.2.3.2
-// http://es5.github.com/#x15.2.3.2
-if (!Object.getPrototypeOf) {
-    // https://github.com/es-shims/es5-shim/issues#issue/2
-    // http://ejohn.org/blog/objectgetprototypeof/
-    // recommended by fschaefer on github
-    //
-    // sure, and webreflection says ^_^
-    // ... this will nerever possibly return null
-    // ... Opera Mini breaks here with infinite loops
-    Object.getPrototypeOf = function getPrototypeOf(object) {
-        /* eslint-disable no-proto */
-        var proto = object.__proto__;
-        /* eslint-enable no-proto */
-        if (proto || proto === null) {
-            return proto;
-        } else if (toStr(object.constructor) === '[object Function]') {
-            return object.constructor.prototype;
-        } else if (object instanceof Object) {
-          return prototypeOfObject;
-        } else {
-          // Correctly return null for Objects created with `Object.create(null)`
-          // (shammed or native) or `{ __proto__: null}`.  Also returns null for
-          // cross-realm objects on browsers that lack `__proto__` support (like
-          // IE <11), but that's the best we can do.
-          return null;
-        }
-    };
-}
+    var call = Function.call;
+    var prototypeOfObject = Object.prototype;
+    var owns = call.bind(prototypeOfObject.hasOwnProperty);
+    var isEnumerable = call.bind(prototypeOfObject.propertyIsEnumerable);
+    var toStr = call.bind(prototypeOfObject.toString);
+
+    // If JS engine supports accessors creating shortcuts.
+    var defineGetter;
+    var defineSetter;
+    var lookupGetter;
+    var lookupSetter;
+    var supportsAccessors = owns(prototypeOfObject, '__defineGetter__');
+    if (supportsAccessors) {
+        /* eslint-disable no-underscore-dangle */
+        defineGetter = call.bind(prototypeOfObject.__defineGetter__);
+        defineSetter = call.bind(prototypeOfObject.__defineSetter__);
+        lookupGetter = call.bind(prototypeOfObject.__lookupGetter__);
+        lookupSetter = call.bind(prototypeOfObject.__lookupSetter__);
+        /* eslint-enable no-underscore-dangle */
+    }
 
-// ES5 15.2.3.3
-// http://es5.github.com/#x15.2.3.3
+    var isPrimitive = function isPrimitive(o) {
+        return o == null || (typeof o !== 'object' && typeof o !== 'function');
+    };
 
-var doesGetOwnPropertyDescriptorWork = function doesGetOwnPropertyDescriptorWork(object) {
-    try {
-        object.sentinel = 0;
-        return Object.getOwnPropertyDescriptor(object, 'sentinel').value === 0;
-    } catch (exception) {
-        return false;
-    }
-};
-
-// check whether getOwnPropertyDescriptor works if it's given. Otherwise, shim partially.
-if (Object.defineProperty) {
-    var getOwnPropertyDescriptorWorksOnObject = doesGetOwnPropertyDescriptorWork({});
-    var getOwnPropertyDescriptorWorksOnDom = typeof document === 'undefined' ||
-    doesGetOwnPropertyDescriptorWork(document.createElement('div'));
-    if (!getOwnPropertyDescriptorWorksOnDom || !getOwnPropertyDescriptorWorksOnObject) {
-        var getOwnPropertyDescriptorFallback = Object.getOwnPropertyDescriptor;
+    // ES5 15.2.3.2
+    // http://es5.github.com/#x15.2.3.2
+    if (!Object.getPrototypeOf) {
+        // https://github.com/es-shims/es5-shim/issues#issue/2
+        // http://ejohn.org/blog/objectgetprototypeof/
+        // recommended by fschaefer on github
+        //
+        // sure, and webreflection says ^_^
+        // ... this will nerever possibly return null
+        // ... Opera Mini breaks here with infinite loops
+        Object.getPrototypeOf = function getPrototypeOf(object) {
+            /* eslint-disable no-proto */
+            var proto = object.__proto__;
+            /* eslint-enable no-proto */
+            if (proto || proto === null) {
+                return proto;
+            } else if (toStr(object.constructor) === '[object Function]') {
+                return object.constructor.prototype;
+            } else if (object instanceof Object) {
+                return prototypeOfObject;
+            } else {
+                // Correctly return null for Objects created with `Object.create(null)`
+                // (shammed or native) or `{ __proto__: null}`.  Also returns null for
+                // cross-realm objects on browsers that lack `__proto__` support (like
+                // IE <11), but that's the best we can do.
+                return null;
+            }
+        };
     }
-}
 
-if (!Object.getOwnPropertyDescriptor || getOwnPropertyDescriptorFallback) {
-    var ERR_NON_OBJECT = 'Object.getOwnPropertyDescriptor called on a non-object: ';
+    // ES5 15.2.3.3
+    // http://es5.github.com/#x15.2.3.3
 
-    /* eslint-disable no-proto */
-    Object.getOwnPropertyDescriptor = function getOwnPropertyDescriptor(object, property) {
-        if ((typeof object !== 'object' && typeof object !== 'function') || object === null) {
-            throw new TypeError(ERR_NON_OBJECT + object);
+    var doesGetOwnPropertyDescriptorWork = function doesGetOwnPropertyDescriptorWork(object) {
+        try {
+            object.sentinel = 0;
+            return Object.getOwnPropertyDescriptor(object, 'sentinel').value === 0;
+        } catch (exception) {
+            return false;
         }
+    };
 
-        // make a valiant attempt to use the real getOwnPropertyDescriptor
-        // for I8's DOM elements.
-        if (getOwnPropertyDescriptorFallback) {
-            try {
-                return getOwnPropertyDescriptorFallback.call(Object, object, property);
-            } catch (exception) {
-                // try the shim if the real one doesn't work
-            }
+    // check whether getOwnPropertyDescriptor works if it's given. Otherwise, shim partially.
+    if (Object.defineProperty) {
+        var getOwnPropertyDescriptorWorksOnObject = doesGetOwnPropertyDescriptorWork({});
+        var getOwnPropertyDescriptorWorksOnDom = typeof document === 'undefined' ||
+        doesGetOwnPropertyDescriptorWork(document.createElement('div'));
+        if (!getOwnPropertyDescriptorWorksOnDom || !getOwnPropertyDescriptorWorksOnObject) {
+            var getOwnPropertyDescriptorFallback = Object.getOwnPropertyDescriptor;
         }
+    }
 
-        var descriptor;
-
-        // If object does not owns property return undefined immediately.
-        if (!owns(object, property)) {
-            return descriptor;
-        }
+    if (!Object.getOwnPropertyDescriptor || getOwnPropertyDescriptorFallback) {
+        var ERR_NON_OBJECT = 'Object.getOwnPropertyDescriptor called on a non-object: ';
 
-        // If object has a property then it's for sure `configurable`, and
-        // probably `enumerable`. Detect enumerability though.
-        descriptor = {
-            enumerable: isEnumerable(object, property),
-            configurable: true
-        };
+        /* eslint-disable no-proto */
+        Object.getOwnPropertyDescriptor = function getOwnPropertyDescriptor(object, property) {
+            if (isPrimitive(object)) {
+                throw new TypeError(ERR_NON_OBJECT + object);
+            }
 
-        // If JS engine supports accessor properties then property may be a
-        // getter or setter.
-        if (supportsAccessors) {
-            // Unfortunately `__lookupGetter__` will return a getter even
-            // if object has own non getter property along with a same named
-            // inherited getter. To avoid misbehavior we temporary remove
-            // `__proto__` so that `__lookupGetter__` will return getter only
-            // if it's owned by an object.
-            var prototype = object.__proto__;
-            var notPrototypeOfObject = object !== prototypeOfObject;
-            // avoid recursion problem, breaking in Opera Mini when
-            // Object.getOwnPropertyDescriptor(Object.prototype, 'toString')
-            // or any other Object.prototype accessor
-            if (notPrototypeOfObject) {
-                object.__proto__ = prototypeOfObject;
+            // make a valiant attempt to use the real getOwnPropertyDescriptor
+            // for I8's DOM elements.
+            if (getOwnPropertyDescriptorFallback) {
+                try {
+                    return getOwnPropertyDescriptorFallback.call(Object, object, property);
+                } catch (exception) {
+                    // try the shim if the real one doesn't work
+                }
             }
 
-            var getter = lookupGetter(object, property);
-            var setter = lookupSetter(object, property);
+            var descriptor;
 
-            if (notPrototypeOfObject) {
-                // Once we have getter and setter we can put values back.
-                object.__proto__ = prototype;
+            // If object does not owns property return undefined immediately.
+            if (!owns(object, property)) {
+                return descriptor;
             }
 
-            if (getter || setter) {
-                if (getter) {
-                    descriptor.get = getter;
+            // If object has a property then it's for sure `configurable`, and
+            // probably `enumerable`. Detect enumerability though.
+            descriptor = {
+                enumerable: isEnumerable(object, property),
+                configurable: true
+            };
+
+            // If JS engine supports accessor properties then property may be a
+            // getter or setter.
+            if (supportsAccessors) {
+                // Unfortunately `__lookupGetter__` will return a getter even
+                // if object has own non getter property along with a same named
+                // inherited getter. To avoid misbehavior we temporary remove
+                // `__proto__` so that `__lookupGetter__` will return getter only
+                // if it's owned by an object.
+                var prototype = object.__proto__;
+                var notPrototypeOfObject = object !== prototypeOfObject;
+                // avoid recursion problem, breaking in Opera Mini when
+                // Object.getOwnPropertyDescriptor(Object.prototype, 'toString')
+                // or any other Object.prototype accessor
+                if (notPrototypeOfObject) {
+                    object.__proto__ = prototypeOfObject;
+                }
+
+                var getter = lookupGetter(object, property);
+                var setter = lookupSetter(object, property);
+
+                if (notPrototypeOfObject) {
+                    // Once we have getter and setter we can put values back.
+                    object.__proto__ = prototype;
                 }
-                if (setter) {
-                    descriptor.set = setter;
+
+                if (getter || setter) {
+                    if (getter) {
+                        descriptor.get = getter;
+                    }
+                    if (setter) {
+                        descriptor.set = setter;
+                    }
+                    // If it was accessor property we're done and return here
+                    // in order to avoid adding `value` to the descriptor.
+                    return descriptor;
                 }
-                // If it was accessor property we're done and return here
-                // in order to avoid adding `value` to the descriptor.
-                return descriptor;
             }
-        }
 
-        // If we got this far we know that object has an own property that is
-        // not an accessor so we set it as a value and return descriptor.
-        descriptor.value = object[property];
-        descriptor.writable = true;
-        return descriptor;
-    };
-    /* eslint-enable no-proto */
-}
-
-// ES5 15.2.3.4
-// http://es5.github.com/#x15.2.3.4
-if (!Object.getOwnPropertyNames) {
-    Object.getOwnPropertyNames = function getOwnPropertyNames(object) {
-        return Object.keys(object);
-    };
-}
-
-// ES5 15.2.3.5
-// http://es5.github.com/#x15.2.3.5
-if (!Object.create) {
-
-    // Contributed by Brandon Benvie, October, 2012
-    var createEmpty;
-    var supportsProto = !({ __proto__: null } instanceof Object);
-                        // the following produces false positives
-                        // in Opera Mini => not a reliable check
-                        // Object.prototype.__proto__ === null
-
-    // Check for document.domain and active x support
-    // No need to use active x approach when document.domain is not set
-    // see https://github.com/es-shims/es5-shim/issues/150
-    // variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346
-    /* global ActiveXObject */
-    var shouldUseActiveX = function shouldUseActiveX() {
-        // return early if document.domain not set
-        if (!document.domain) {
-            return false;
-        }
+            // If we got this far we know that object has an own property that is
+            // not an accessor so we set it as a value and return descriptor.
+            descriptor.value = object[property];
+            descriptor.writable = true;
+            return descriptor;
+        };
+        /* eslint-enable no-proto */
+    }
 
-        try {
-            return !!new ActiveXObject('htmlfile');
-        } catch (exception) {
-            return false;
-        }
-    };
+    // ES5 15.2.3.4
+    // http://es5.github.com/#x15.2.3.4
+    if (!Object.getOwnPropertyNames) {
+        Object.getOwnPropertyNames = function getOwnPropertyNames(object) {
+            return Object.keys(object);
+        };
+    }
 
-    // This supports IE8 when document.domain is used
-    // see https://github.com/es-shims/es5-shim/issues/150
-    // variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346
-    var getEmptyViaActiveX = function getEmptyViaActiveX() {
-        var empty;
-        var xDoc;
+    // ES5 15.2.3.5
+    // http://es5.github.com/#x15.2.3.5
+    if (!Object.create) {
+
+        // Contributed by Brandon Benvie, October, 2012
+        var createEmpty;
+        var supportsProto = !({ __proto__: null } instanceof Object);
+                            // the following produces false positives
+                            // in Opera Mini => not a reliable check
+                            // Object.prototype.__proto__ === null
+
+        // Check for document.domain and active x support
+        // No need to use active x approach when document.domain is not set
+        // see https://github.com/es-shims/es5-shim/issues/150
+        // variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346
+        /* global ActiveXObject */
+        var shouldUseActiveX = function shouldUseActiveX() {
+            // return early if document.domain not set
+            if (!document.domain) {
+                return false;
+            }
 
-        xDoc = new ActiveXObject('htmlfile');
+            try {
+                return !!new ActiveXObject('htmlfile');
+            } catch (exception) {
+                return false;
+            }
+        };
 
-		var script = 'script';
-        xDoc.write('<' + script + '></' + script + '>');
-        xDoc.close();
+        // This supports IE8 when document.domain is used
+        // see https://github.com/es-shims/es5-shim/issues/150
+        // variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346
+        var getEmptyViaActiveX = function getEmptyViaActiveX() {
+            var empty;
+            var xDoc;
 
-        empty = xDoc.parentWindow.Object.prototype;
-        xDoc = null;
+            xDoc = new ActiveXObject('htmlfile');
 
-        return empty;
-    };
+            var script = 'script';
+            xDoc.write('<' + script + '></' + script + '>');
+            xDoc.close();
 
-    // The original implementation using an iframe
-    // before the activex approach was added
-    // see https://github.com/es-shims/es5-shim/issues/150
-    var getEmptyViaIFrame = function getEmptyViaIFrame() {
-        var iframe = document.createElement('iframe');
-        var parent = document.body || document.documentElement;
-        var empty;
-
-        iframe.style.display = 'none';
-        parent.appendChild(iframe);
-        /* eslint-disable no-script-url */
-        iframe.src = 'javascript:';
-        /* eslint-enable no-script-url */
-
-        empty = iframe.contentWindow.Object.prototype;
-        parent.removeChild(iframe);
-        iframe = null;
-
-        return empty;
-    };
+            empty = xDoc.parentWindow.Object.prototype;
+            xDoc = null;
 
-    /* global document */
-    if (supportsProto || typeof document === 'undefined') {
-        createEmpty = function () {
-            return { __proto__: null };
+            return empty;
         };
-    } else {
-        // In old IE __proto__ can't be used to manually set `null`, nor does
-        // any other method exist to make an object that inherits from nothing,
-        // aside from Object.prototype itself. Instead, create a new global
-        // object and *steal* its Object.prototype and strip it bare. This is
-        // used as the prototype to create nullary objects.
-        createEmpty = function () {
-            // Determine which approach to use
-            // see https://github.com/es-shims/es5-shim/issues/150
-            var empty = shouldUseActiveX() ? getEmptyViaActiveX() : getEmptyViaIFrame();
-
-            delete empty.constructor;
-            delete empty.hasOwnProperty;
-            delete empty.propertyIsEnumerable;
-            delete empty.isPrototypeOf;
-            delete empty.toLocaleString;
-            delete empty.toString;
-            delete empty.valueOf;
-
-            var Empty = function Empty() {};
-            Empty.prototype = empty;
-            // short-circuit future calls
+
+        // The original implementation using an iframe
+        // before the activex approach was added
+        // see https://github.com/es-shims/es5-shim/issues/150
+        var getEmptyViaIFrame = function getEmptyViaIFrame() {
+            var iframe = document.createElement('iframe');
+            var parent = document.body || document.documentElement;
+            var empty;
+
+            iframe.style.display = 'none';
+            parent.appendChild(iframe);
+            /* eslint-disable no-script-url */
+            iframe.src = 'javascript:';
+            /* eslint-enable no-script-url */
+
+            empty = iframe.contentWindow.Object.prototype;
+            parent.removeChild(iframe);
+            iframe = null;
+
+            return empty;
+        };
+
+        /* global document */
+        if (supportsProto || typeof document === 'undefined') {
             createEmpty = function () {
+                return { __proto__: null };
+            };
+        } else {
+            // In old IE __proto__ can't be used to manually set `null`, nor does
+            // any other method exist to make an object that inherits from nothing,
+            // aside from Object.prototype itself. Instead, create a new global
+            // object and *steal* its Object.prototype and strip it bare. This is
+            // used as the prototype to create nullary objects.
+            createEmpty = function () {
+                // Determine which approach to use
+                // see https://github.com/es-shims/es5-shim/issues/150
+                var empty = shouldUseActiveX() ? getEmptyViaActiveX() : getEmptyViaIFrame();
+
+                delete empty.constructor;
+                delete empty.hasOwnProperty;
+                delete empty.propertyIsEnumerable;
+                delete empty.isPrototypeOf;
+                delete empty.toLocaleString;
+                delete empty.toString;
+                delete empty.valueOf;
+
+                var Empty = function Empty() {};
+                Empty.prototype = empty;
+                // short-circuit future calls
+                createEmpty = function () {
+                    return new Empty();
+                };
                 return new Empty();
             };
-            return new Empty();
-        };
-    }
+        }
 
-    Object.create = function create(prototype, properties) {
+        Object.create = function create(prototype, properties) {
 
-        var object;
-        var Type = function Type() {}; // An empty constructor.
+            var object;
+            var Type = function Type() {}; // An empty constructor.
 
-        if (prototype === null) {
-            object = createEmpty();
-        } else {
-            if (typeof prototype !== 'object' && typeof prototype !== 'function') {
-                // In the native implementation `parent` can be `null`
-                // OR *any* `instanceof Object`  (Object|Function|Array|RegExp|etc)
-                // Use `typeof` tho, b/c in old IE, DOM elements are not `instanceof Object`
-                // like they are in modern browsers. Using `Object.create` on DOM elements
-                // is...err...probably inappropriate, but the native version allows for it.
-                throw new TypeError('Object prototype may only be an Object or null'); // same msg as Chrome
+            if (prototype === null) {
+                object = createEmpty();
+            } else {
+                if (prototype !== null && isPrimitive(prototype)) {
+                    // In the native implementation `parent` can be `null`
+                    // OR *any* `instanceof Object`  (Object|Function|Array|RegExp|etc)
+                    // Use `typeof` tho, b/c in old IE, DOM elements are not `instanceof Object`
+                    // like they are in modern browsers. Using `Object.create` on DOM elements
+                    // is...err...probably inappropriate, but the native version allows for it.
+                    throw new TypeError('Object prototype may only be an Object or null'); // same msg as Chrome
+                }
+                Type.prototype = prototype;
+                object = new Type();
+                // IE has no built-in implementation of `Object.getPrototypeOf`
+                // neither `__proto__`, but this manually setting `__proto__` will
+                // guarantee that `Object.getPrototypeOf` will work as expected with
+                // objects created using `Object.create`
+                /* eslint-disable no-proto */
+                object.__proto__ = prototype;
+                /* eslint-enable no-proto */
             }
-            Type.prototype = prototype;
-            object = new Type();
-            // IE has no built-in implementation of `Object.getPrototypeOf`
-            // neither `__proto__`, but this manually setting `__proto__` will
-            // guarantee that `Object.getPrototypeOf` will work as expected with
-            // objects created using `Object.create`
-            /* eslint-disable no-proto */
-            object.__proto__ = prototype;
-            /* eslint-enable no-proto */
-        }
 
-        if (properties !== void 0) {
-            Object.defineProperties(object, properties);
-        }
+            if (properties !== void 0) {
+                Object.defineProperties(object, properties);
+            }
 
-        return object;
-    };
-}
+            return object;
+        };
+    }
 
-// ES5 15.2.3.6
-// http://es5.github.com/#x15.2.3.6
+    // ES5 15.2.3.6
+    // http://es5.github.com/#x15.2.3.6
 
-// Patch for WebKit and IE8 standard mode
-// Designed by hax <hax.github.com>
-// related issue: https://github.com/es-shims/es5-shim/issues#issue/5
-// IE8 Reference:
-//     http://msdn.microsoft.com/en-us/library/dd282900.aspx
-//     http://msdn.microsoft.com/en-us/library/dd229916.aspx
-// WebKit Bugs:
-//     https://bugs.webkit.org/show_bug.cgi?id=36423
+    // Patch for WebKit and IE8 standard mode
+    // Designed by hax <hax.github.com>
+    // related issue: https://github.com/es-shims/es5-shim/issues#issue/5
+    // IE8 Reference:
+    //     http://msdn.microsoft.com/en-us/library/dd282900.aspx
+    //     http://msdn.microsoft.com/en-us/library/dd229916.aspx
+    // WebKit Bugs:
+    //     https://bugs.webkit.org/show_bug.cgi?id=36423
 
-var doesDefinePropertyWork = function doesDefinePropertyWork(object) {
-    try {
-        Object.defineProperty(object, 'sentinel', {});
-        return 'sentinel' in object;
-    } catch (exception) {
-        return false;
-    }
-};
-
-// check whether defineProperty works if it's given. Otherwise,
-// shim partially.
-if (Object.defineProperty) {
-    var definePropertyWorksOnObject = doesDefinePropertyWork({});
-    var definePropertyWorksOnDom = typeof document === 'undefined' ||
-        doesDefinePropertyWork(document.createElement('div'));
-    if (!definePropertyWorksOnObject || !definePropertyWorksOnDom) {
-        var definePropertyFallback = Object.defineProperty,
-            definePropertiesFallback = Object.defineProperties;
+    var doesDefinePropertyWork = function doesDefinePropertyWork(object) {
+        try {
+            Object.defineProperty(object, 'sentinel', {});
+            return 'sentinel' in object;
+        } catch (exception) {
+            return false;
+        }
+    };
+
+    // check whether defineProperty works if it's given. Otherwise,
+    // shim partially.
+    if (Object.defineProperty) {
+        var definePropertyWorksOnObject = doesDefinePropertyWork({});
+        var definePropertyWorksOnDom = typeof document === 'undefined' ||
+            doesDefinePropertyWork(document.createElement('div'));
+        if (!definePropertyWorksOnObject || !definePropertyWorksOnDom) {
+            var definePropertyFallback = Object.defineProperty,
+                definePropertiesFallback = Object.defineProperties;
+        }
     }
-}
 
-if (!Object.defineProperty || definePropertyFallback) {
-    var ERR_NON_OBJECT_DESCRIPTOR = 'Property description must be an object: ';
-    var ERR_NON_OBJECT_TARGET = 'Object.defineProperty called on non-object: ';
-    var ERR_ACCESSORS_NOT_SUPPORTED = 'getters & setters can not be defined on this javascript engine';
+    if (!Object.defineProperty || definePropertyFallback) {
+        var ERR_NON_OBJECT_DESCRIPTOR = 'Property description must be an object: ';
+        var ERR_NON_OBJECT_TARGET = 'Object.defineProperty called on non-object: ';
+        var ERR_ACCESSORS_NOT_SUPPORTED = 'getters & setters can not be defined on this javascript engine';
 
-    Object.defineProperty = function defineProperty(object, property, descriptor) {
-        if ((typeof object !== 'object' && typeof object !== 'function') || object === null) {
-            throw new TypeError(ERR_NON_OBJECT_TARGET + object);
-        }
-        if ((typeof descriptor !== 'object' && typeof descriptor !== 'function') || descriptor === null) {
-            throw new TypeError(ERR_NON_OBJECT_DESCRIPTOR + descriptor);
-        }
-        // make a valiant attempt to use the real defineProperty
-        // for I8's DOM elements.
-        if (definePropertyFallback) {
-            try {
-                return definePropertyFallback.call(Object, object, property, descriptor);
-            } catch (exception) {
-                // try the shim if the real one doesn't work
+        Object.defineProperty = function defineProperty(object, property, descriptor) {
+            if (isPrimitive(object)) {
+                throw new TypeError(ERR_NON_OBJECT_TARGET + object);
+            }
+            if (isPrimitive(descriptor)) {
+                throw new TypeError(ERR_NON_OBJECT_DESCRIPTOR + descriptor);
+            }
+            // make a valiant attempt to use the real defineProperty
+            // for I8's DOM elements.
+            if (definePropertyFallback) {
+                try {
+                    return definePropertyFallback.call(Object, object, property, descriptor);
+                } catch (exception) {
+                    // try the shim if the real one doesn't work
+                }
             }
-        }
 
-        // If it's a data property.
-        if ('value' in descriptor) {
-            // fail silently if 'writable', 'enumerable', or 'configurable'
-            // are requested but not supported
-            /*
-            // alternate approach:
-            if ( // can't implement these features; allow false but not true
-                ('writable' in descriptor && !descriptor.writable) ||
-                ('enumerable' in descriptor && !descriptor.enumerable) ||
-                ('configurable' in descriptor && !descriptor.configurable)
-            ))
-                throw new RangeError(
-                    'This implementation of Object.defineProperty does not support configurable, enumerable, or writable.'
-                );
-            */
-
-            if (supportsAccessors && (lookupGetter(object, property) || lookupSetter(object, property))) {
-                // As accessors are supported only on engines implementing
-                // `__proto__` we can safely override `__proto__` while defining
-                // a property to make sure that we don't hit an inherited
-                // accessor.
-                /* eslint-disable no-proto */
-                var prototype = object.__proto__;
-                object.__proto__ = prototypeOfObject;
-                // Deleting a property anyway since getter / setter may be
-                // defined on object itself.
-                delete object[property];
-                object[property] = descriptor.value;
-                // Setting original `__proto__` back now.
-                object.__proto__ = prototype;
-                /* eslint-enable no-proto */
+            // If it's a data property.
+            if ('value' in descriptor) {
+                // fail silently if 'writable', 'enumerable', or 'configurable'
+                // are requested but not supported
+                /*
+                // alternate approach:
+                if ( // can't implement these features; allow false but not true
+                    ('writable' in descriptor && !descriptor.writable) ||
+                    ('enumerable' in descriptor && !descriptor.enumerable) ||
+                    ('configurable' in descriptor && !descriptor.configurable)
+                ))
+                    throw new RangeError(
+                        'This implementation of Object.defineProperty does not support configurable, enumerable, or writable.'
+                    );
+                */
+
+                if (supportsAccessors && (lookupGetter(object, property) || lookupSetter(object, property))) {
+                    // As accessors are supported only on engines implementing
+                    // `__proto__` we can safely override `__proto__` while defining
+                    // a property to make sure that we don't hit an inherited
+                    // accessor.
+                    /* eslint-disable no-proto */
+                    var prototype = object.__proto__;
+                    object.__proto__ = prototypeOfObject;
+                    // Deleting a property anyway since getter / setter may be
+                    // defined on object itself.
+                    delete object[property];
+                    object[property] = descriptor.value;
+                    // Setting original `__proto__` back now.
+                    object.__proto__ = prototype;
+                    /* eslint-enable no-proto */
+                } else {
+                    object[property] = descriptor.value;
+                }
             } else {
-                object[property] = descriptor.value;
+                var hasGetter = 'get' in descriptor;
+                var hasSetter = 'set' in descriptor;
+                if (!supportsAccessors && (hasGetter || hasSetter)) {
+                    throw new TypeError(ERR_ACCESSORS_NOT_SUPPORTED);
+                }
+                // If we got that far then getters and setters can be defined !!
+                if (hasGetter) {
+                    defineGetter(object, property, descriptor.get);
+                }
+                if (hasSetter) {
+                    defineSetter(object, property, descriptor.set);
+                }
             }
-        } else {
-            if (!supportsAccessors && (('get' in descriptor) || ('set' in descriptor))) {
-                throw new TypeError(ERR_ACCESSORS_NOT_SUPPORTED);
+            return object;
+        };
+    }
+
+    // ES5 15.2.3.7
+    // http://es5.github.com/#x15.2.3.7
+    if (!Object.defineProperties || definePropertiesFallback) {
+        Object.defineProperties = function defineProperties(object, properties) {
+            // make a valiant attempt to use the real defineProperties
+            if (definePropertiesFallback) {
+                try {
+                    return definePropertiesFallback.call(Object, object, properties);
+                } catch (exception) {
+                    // try the shim if the real one doesn't work
+                }
+            }
+
+            Object.keys(properties).forEach(function (property) {
+                if (property !== '__proto__') {
+                    Object.defineProperty(object, property, properties[property]);
+                }
+            });
+            return object;
+        };
+    }
+
+    // ES5 15.2.3.8
+    // http://es5.github.com/#x15.2.3.8
+    if (!Object.seal) {
+        Object.seal = function seal(object) {
+            if (Object(object) !== object) {
+                throw new TypeError('Object.seal can only be called on Objects.');
+            }
+            // this is misleading and breaks feature-detection, but
+            // allows "securable" code to "gracefully" degrade to working
+            // but insecure code.
+            return object;
+        };
+    }
+
+    // ES5 15.2.3.9
+    // http://es5.github.com/#x15.2.3.9
+    if (!Object.freeze) {
+        Object.freeze = function freeze(object) {
+            if (Object(object) !== object) {
+                throw new TypeError('Object.freeze can only be called on Objects.');
             }
-            // If we got that far then getters and setters can be defined !!
-            if ('get' in descriptor) {
-                defineGetter(object, property, descriptor.get);
+            // this is misleading and breaks feature-detection, but
+            // allows "securable" code to "gracefully" degrade to working
+            // but insecure code.
+            return object;
+        };
+    }
+
+    // detect a Rhino bug and patch it
+    try {
+        Object.freeze(function () {});
+    } catch (exception) {
+        Object.freeze = (function (freezeObject) {
+            return function freeze(object) {
+                if (typeof object === 'function') {
+                    return object;
+                } else {
+                    return freezeObject(object);
+                }
+            };
+        }(Object.freeze));
+    }
+
+    // ES5 15.2.3.10
+    // http://es5.github.com/#x15.2.3.10
+    if (!Object.preventExtensions) {
+        Object.preventExtensions = function preventExtensions(object) {
+            if (Object(object) !== object) {
+                throw new TypeError('Object.preventExtensions can only be called on Objects.');
             }
-            if ('set' in descriptor) {
-                defineSetter(object, property, descriptor.set);
+            // this is misleading and breaks feature-detection, but
+            // allows "securable" code to "gracefully" degrade to working
+            // but insecure code.
+            return object;
+        };
+    }
+
+    // ES5 15.2.3.11
+    // http://es5.github.com/#x15.2.3.11
+    if (!Object.isSealed) {
+        Object.isSealed = function isSealed(object) {
+            if (Object(object) !== object) {
+                throw new TypeError('Object.isSealed can only be called on Objects.');
             }
-        }
-        return object;
-    };
-}
-
-// ES5 15.2.3.7
-// http://es5.github.com/#x15.2.3.7
-if (!Object.defineProperties || definePropertiesFallback) {
-    Object.defineProperties = function defineProperties(object, properties) {
-        // make a valiant attempt to use the real defineProperties
-        if (definePropertiesFallback) {
-            try {
-                return definePropertiesFallback.call(Object, object, properties);
-            } catch (exception) {
-                // try the shim if the real one doesn't work
+            return false;
+        };
+    }
+
+    // ES5 15.2.3.12
+    // http://es5.github.com/#x15.2.3.12
+    if (!Object.isFrozen) {
+        Object.isFrozen = function isFrozen(object) {
+            if (Object(object) !== object) {
+                throw new TypeError('Object.isFrozen can only be called on Objects.');
             }
-        }
+            return false;
+        };
+    }
 
-        Object.keys(properties).forEach(function (property) {
-            if (property !== '__proto__') {
-                Object.defineProperty(object, property, properties[property]);
+    // ES5 15.2.3.13
+    // http://es5.github.com/#x15.2.3.13
+    if (!Object.isExtensible) {
+        Object.isExtensible = function isExtensible(object) {
+            // 1. If Type(O) is not Object throw a TypeError exception.
+            if (Object(object) !== object) {
+                throw new TypeError('Object.isExtensible can only be called on Objects.');
             }
-        });
-        return object;
-    };
-}
-
-// ES5 15.2.3.8
-// http://es5.github.com/#x15.2.3.8
-if (!Object.seal) {
-    Object.seal = function seal(object) {
-        if (Object(object) !== object) {
-            throw new TypeError('Object.seal can only be called on Objects.');
-        }
-        // this is misleading and breaks feature-detection, but
-        // allows "securable" code to "gracefully" degrade to working
-        // but insecure code.
-        return object;
-    };
-}
-
-// ES5 15.2.3.9
-// http://es5.github.com/#x15.2.3.9
-if (!Object.freeze) {
-    Object.freeze = function freeze(object) {
-        if (Object(object) !== object) {
-            throw new TypeError('Object.freeze can only be called on Objects.');
-        }
-        // this is misleading and breaks feature-detection, but
-        // allows "securable" code to "gracefully" degrade to working
-        // but insecure code.
-        return object;
-    };
-}
-
-// detect a Rhino bug and patch it
-try {
-    Object.freeze(function () {});
-} catch (exception) {
-    Object.freeze = (function (freezeObject) {
-        return function freeze(object) {
-            if (typeof object === 'function') {
-                return object;
-            } else {
-                return freezeObject(object);
+            // 2. Return the Boolean value of the [[Extensible]] internal property of O.
+            var name = '';
+            while (owns(object, name)) {
+                name += '?';
             }
+            object[name] = true;
+            var returnValue = owns(object, name);
+            delete object[name];
+            return returnValue;
         };
-    }(Object.freeze));
-}
-
-// ES5 15.2.3.10
-// http://es5.github.com/#x15.2.3.10
-if (!Object.preventExtensions) {
-    Object.preventExtensions = function preventExtensions(object) {
-        if (Object(object) !== object) {
-            throw new TypeError('Object.preventExtensions can only be called on Objects.');
-        }
-        // this is misleading and breaks feature-detection, but
-        // allows "securable" code to "gracefully" degrade to working
-        // but insecure code.
-        return object;
-    };
-}
-
-// ES5 15.2.3.11
-// http://es5.github.com/#x15.2.3.11
-if (!Object.isSealed) {
-    Object.isSealed = function isSealed(object) {
-        if (Object(object) !== object) {
-            throw new TypeError('Object.isSealed can only be called on Objects.');
-        }
-        return false;
-    };
-}
-
-// ES5 15.2.3.12
-// http://es5.github.com/#x15.2.3.12
-if (!Object.isFrozen) {
-    Object.isFrozen = function isFrozen(object) {
-        if (Object(object) !== object) {
-            throw new TypeError('Object.isFrozen can only be called on Objects.');
-        }
-        return false;
-    };
-}
-
-// ES5 15.2.3.13
-// http://es5.github.com/#x15.2.3.13
-if (!Object.isExtensible) {
-    Object.isExtensible = function isExtensible(object) {
-        // 1. If Type(O) is not Object throw a TypeError exception.
-        if (Object(object) !== object) {
-            throw new TypeError('Object.isExtensible can only be called on Objects.');
-        }
-        // 2. Return the Boolean value of the [[Extensible]] internal property of O.
-        var name = '';
-        while (owns(object, name)) {
-            name += '?';
-        }
-        object[name] = true;
-        var returnValue = owns(object, name);
-        delete object[name];
-        return returnValue;
-    };
-}
+    }
 
 }));
diff --git a/es5-sham.map b/es5-sham.map
index 3ed2a57..cce47c1 100644
--- a/es5-sham.map
+++ b/es5-sham.map
@@ -1 +1 @@
-{"version":3,"sources":["es5-sham.js"],"names":["root","factory","define","amd","exports","module","returnExports","this","call","Function","prototypeOfObject","Object","prototype","owns","bind","hasOwnProperty","isEnumerable","propertyIsEnumerable","toStr","toString","defineGetter","defineSetter","lookupGetter","lookupSetter","supportsAccessors","__defineGetter__","__defineSetter__","__lookupGetter__","__lookupSetter__","getPrototypeOf","object","proto","__proto__","constructor","doesGe [...]
\ No newline at end of file
+{"version":3,"sources":["es5-sham.js"],"names":["root","factory","define","amd","exports","module","returnExports","this","call","Function","prototypeOfObject","Object","prototype","owns","bind","hasOwnProperty","isEnumerable","propertyIsEnumerable","toStr","toString","defineGetter","defineSetter","lookupGetter","lookupSetter","supportsAccessors","__defineGetter__","__defineSetter__","__lookupGetter__","__lookupSetter__","isPrimitive","o","getPrototypeOf","object","proto","__proto__","co [...]
\ No newline at end of file
diff --git a/es5-sham.min.js b/es5-sham.min.js
index bc8a390..fd13f15 100644
--- a/es5-sham.min.js
+++ b/es5-sham.min.js
@@ -1,7 +1,7 @@
 /*!
  * https://github.com/es-shims/es5-shim
  * @license es5-shim Copyright 2009-2015 by contributors, MIT License
- * see https://github.com/es-shims/es5-shim/blob/v4.5.7/LICENSE
+ * see https://github.com/es-shims/es5-shim/blob/v4.5.9/LICENSE
  */
-(function(e,t){"use strict";if(typeof define==="function"&&define.amd){define(t)}else if(typeof exports==="object"){module.exports=t()}else{e.returnExports=t()}})(this,function(){var e=Function.call;var t=Object.prototype;var r=e.bind(t.hasOwnProperty);var n=e.bind(t.propertyIsEnumerable);var o=e.bind(t.toString);var i;var c;var f;var a;var l=r(t,"__defineGetter__");if(l){i=e.bind(t.__defineGetter__);c=e.bind(t.__defineSetter__);f=e.bind(t.__lookupGetter__);a=e.bind(t.__lookupSetter__)}i [...]
+(function(e,t){"use strict";if(typeof define==="function"&&define.amd){define(t)}else if(typeof exports==="object"){module.exports=t()}else{e.returnExports=t()}})(this,function(){var e=Function.call;var t=Object.prototype;var r=e.bind(t.hasOwnProperty);var n=e.bind(t.propertyIsEnumerable);var o=e.bind(t.toString);var i;var c;var f;var a;var l=r(t,"__defineGetter__");if(l){i=e.bind(t.__defineGetter__);c=e.bind(t.__defineSetter__);f=e.bind(t.__lookupGetter__);a=e.bind(t.__lookupSetter__)}v [...]
 //# sourceMappingURL=es5-sham.map
diff --git a/es5-shim.js b/es5-shim.js
index 91a7a39..f94b433 100644
--- a/es5-shim.js
+++ b/es5-shim.js
@@ -28,2024 +28,2038 @@
         root.returnExports = factory();
     }
 }(this, function () {
-
-/**
- * Brings an environment as close to ECMAScript 5 compliance
- * as is possible with the facilities of erstwhile engines.
- *
- * Annotated ES5: http://es5.github.com/ (specific links below)
- * ES5 Spec: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf
- * Required reading: http://javascriptweblog.wordpress.com/2011/12/05/extending-javascript-natives/
- */
-
-// Shortcut to an often accessed properties, in order to avoid multiple
-// dereference that costs universally. This also holds a reference to known-good
-// functions.
-var $Array = Array;
-var ArrayPrototype = $Array.prototype;
-var $Object = Object;
-var ObjectPrototype = $Object.prototype;
-var $Function = Function;
-var FunctionPrototype = $Function.prototype;
-var $String = String;
-var StringPrototype = $String.prototype;
-var $Number = Number;
-var NumberPrototype = $Number.prototype;
-var array_slice = ArrayPrototype.slice;
-var array_splice = ArrayPrototype.splice;
-var array_push = ArrayPrototype.push;
-var array_unshift = ArrayPrototype.unshift;
-var array_concat = ArrayPrototype.concat;
-var array_join = ArrayPrototype.join;
-var call = FunctionPrototype.call;
-var apply = FunctionPrototype.apply;
-var max = Math.max;
-var min = Math.min;
-
-// Having a toString local variable name breaks in Opera so use to_string.
-var to_string = ObjectPrototype.toString;
-
-/* global Symbol */
-/* eslint-disable one-var-declaration-per-line, no-redeclare, max-statements-per-line */
-var hasToStringTag = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';
-var isCallable; /* inlined from https://npmjs.com/is-callable */ var fnToStr = Function.prototype.toString, constructorRegex = /^\s*class /, isES6ClassFn = function isES6ClassFn(value) { try { var fnStr = fnToStr.call(value); var singleStripped = fnStr.replace(/\/\/.*\n/g, ''); var multiStripped = singleStripped.replace(/\/\*[.\s\S]*\*\//g, ''); var spaceStripped = multiStripped.replace(/\n/mg, ' ').replace(/ {2}/g, ' '); return constructorRegex.test(spaceStripped); } catch (e) { return  [...]
-
-var isRegex; /* inlined from https://npmjs.com/is-regex */ var regexExec = RegExp.prototype.exec, tryRegexExec = function tryRegexExec(value) { try { regexExec.call(value); return true; } catch (e) { return false; } }, regexClass = '[object RegExp]'; isRegex = function isRegex(value) { if (typeof value !== 'object') { return false; } return hasToStringTag ? tryRegexExec(value) : to_string.call(value) === regexClass; };
-var isString; /* inlined from https://npmjs.com/is-string */ var strValue = String.prototype.valueOf, tryStringObject = function tryStringObject(value) { try { strValue.call(value); return true; } catch (e) { return false; } }, stringClass = '[object String]'; isString = function isString(value) { if (typeof value === 'string') { return true; } if (typeof value !== 'object') { return false; } return hasToStringTag ? tryStringObject(value) : to_string.call(value) === stringClass; };
-/* eslint-enable one-var-declaration-per-line, no-redeclare, max-statements-per-line */
-
-/* inlined from http://npmjs.com/define-properties */
-var supportsDescriptors = $Object.defineProperty && (function () {
-    try {
-        var obj = {};
-        $Object.defineProperty(obj, 'x', { enumerable: false, value: obj });
-        for (var _ in obj) { return false; }
-        return obj.x === obj;
-    } catch (e) { /* this is ES3 */
-        return false;
-    }
-}());
-var defineProperties = (function (has) {
-  // Define configurable, writable, and non-enumerable props
-  // if they don't exist.
-  var defineProperty;
-  if (supportsDescriptors) {
-      defineProperty = function (object, name, method, forceAssign) {
-          if (!forceAssign && (name in object)) { return; }
-          $Object.defineProperty(object, name, {
-              configurable: true,
-              enumerable: false,
-              writable: true,
-              value: method
-          });
-      };
-  } else {
-      defineProperty = function (object, name, method, forceAssign) {
-          if (!forceAssign && (name in object)) { return; }
-          object[name] = method;
-      };
-  }
-  return function defineProperties(object, map, forceAssign) {
-      for (var name in map) {
-          if (has.call(map, name)) {
-            defineProperty(object, name, map[name], forceAssign);
-          }
-      }
-  };
-}(ObjectPrototype.hasOwnProperty));
-
-//
-// Util
-// ======
-//
-
-/* replaceable with https://npmjs.com/package/es-abstract /helpers/isPrimitive */
-var isPrimitive = function isPrimitive(input) {
-    var type = typeof input;
-    return input === null || (type !== 'object' && type !== 'function');
-};
-
-var isActualNaN = $Number.isNaN || function (x) { return x !== x; };
-
-var ES = {
-    // ES5 9.4
-    // http://es5.github.com/#x9.4
-    // http://jsperf.com/to-integer
-    /* replaceable with https://npmjs.com/package/es-abstract ES5.ToInteger */
-    ToInteger: function ToInteger(num) {
-        var n = +num;
-        if (isActualNaN(n)) {
-            n = 0;
-        } else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {
-            n = (n > 0 || -1) * Math.floor(Math.abs(n));
+    /**
+     * Brings an environment as close to ECMAScript 5 compliance
+     * as is possible with the facilities of erstwhile engines.
+     *
+     * Annotated ES5: http://es5.github.com/ (specific links below)
+     * ES5 Spec: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf
+     * Required reading: http://javascriptweblog.wordpress.com/2011/12/05/extending-javascript-natives/
+     */
+
+    // Shortcut to an often accessed properties, in order to avoid multiple
+    // dereference that costs universally. This also holds a reference to known-good
+    // functions.
+    var $Array = Array;
+    var ArrayPrototype = $Array.prototype;
+    var $Object = Object;
+    var ObjectPrototype = $Object.prototype;
+    var $Function = Function;
+    var FunctionPrototype = $Function.prototype;
+    var $String = String;
+    var StringPrototype = $String.prototype;
+    var $Number = Number;
+    var NumberPrototype = $Number.prototype;
+    var array_slice = ArrayPrototype.slice;
+    var array_splice = ArrayPrototype.splice;
+    var array_push = ArrayPrototype.push;
+    var array_unshift = ArrayPrototype.unshift;
+    var array_concat = ArrayPrototype.concat;
+    var array_join = ArrayPrototype.join;
+    var call = FunctionPrototype.call;
+    var apply = FunctionPrototype.apply;
+    var max = Math.max;
+    var min = Math.min;
+
+    // Having a toString local variable name breaks in Opera so use to_string.
+    var to_string = ObjectPrototype.toString;
+
+    /* global Symbol */
+    /* eslint-disable one-var-declaration-per-line, no-redeclare, max-statements-per-line */
+    var hasToStringTag = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';
+    var isCallable; /* inlined from https://npmjs.com/is-callable */ var fnToStr = Function.prototype.toString, constructorRegex = /^\s*class /, isES6ClassFn = function isES6ClassFn(value) { try { var fnStr = fnToStr.call(value); var singleStripped = fnStr.replace(/\/\/.*\n/g, ''); var multiStripped = singleStripped.replace(/\/\*[.\s\S]*\*\//g, ''); var spaceStripped = multiStripped.replace(/\n/mg, ' ').replace(/ {2}/g, ' '); return constructorRegex.test(spaceStripped); } catch (e) { ret [...]
+
+    var isRegex; /* inlined from https://npmjs.com/is-regex */ var regexExec = RegExp.prototype.exec, tryRegexExec = function tryRegexExec(value) { try { regexExec.call(value); return true; } catch (e) { return false; } }, regexClass = '[object RegExp]'; isRegex = function isRegex(value) { if (typeof value !== 'object') { return false; } return hasToStringTag ? tryRegexExec(value) : to_string.call(value) === regexClass; };
+    var isString; /* inlined from https://npmjs.com/is-string */ var strValue = String.prototype.valueOf, tryStringObject = function tryStringObject(value) { try { strValue.call(value); return true; } catch (e) { return false; } }, stringClass = '[object String]'; isString = function isString(value) { if (typeof value === 'string') { return true; } if (typeof value !== 'object') { return false; } return hasToStringTag ? tryStringObject(value) : to_string.call(value) === stringClass; };
+    /* eslint-enable one-var-declaration-per-line, no-redeclare, max-statements-per-line */
+
+    /* inlined from http://npmjs.com/define-properties */
+    var supportsDescriptors = $Object.defineProperty && (function () {
+        try {
+            var obj = {};
+            $Object.defineProperty(obj, 'x', { enumerable: false, value: obj });
+            for (var _ in obj) { // jscs:ignore disallowUnusedVariables
+                return false;
+            }
+            return obj.x === obj;
+        } catch (e) { /* this is ES3 */
+            return false;
         }
-        return n;
-    },
-
-    /* replaceable with https://npmjs.com/package/es-abstract ES5.ToPrimitive */
-    ToPrimitive: function ToPrimitive(input) {
-        var val, valueOf, toStr;
-        if (isPrimitive(input)) {
-            return input;
+    }());
+    var defineProperties = (function (has) {
+        // Define configurable, writable, and non-enumerable props
+        // if they don't exist.
+        var defineProperty;
+        if (supportsDescriptors) {
+            defineProperty = function (object, name, method, forceAssign) {
+                if (!forceAssign && (name in object)) {
+                    return;
+                }
+                $Object.defineProperty(object, name, {
+                    configurable: true,
+                    enumerable: false,
+                    writable: true,
+                    value: method
+                });
+            };
+        } else {
+            defineProperty = function (object, name, method, forceAssign) {
+                if (!forceAssign && (name in object)) {
+                    return;
+                }
+                object[name] = method;
+            };
         }
-        valueOf = input.valueOf;
-        if (isCallable(valueOf)) {
-            val = valueOf.call(input);
-            if (isPrimitive(val)) {
-                return val;
+        return function defineProperties(object, map, forceAssign) {
+            for (var name in map) {
+                if (has.call(map, name)) {
+                    defineProperty(object, name, map[name], forceAssign);
+                }
             }
-        }
-        toStr = input.toString;
-        if (isCallable(toStr)) {
-            val = toStr.call(input);
-            if (isPrimitive(val)) {
-                return val;
+        };
+    }(ObjectPrototype.hasOwnProperty));
+
+    //
+    // Util
+    // ======
+    //
+
+    /* replaceable with https://npmjs.com/package/es-abstract /helpers/isPrimitive */
+    var isPrimitive = function isPrimitive(input) {
+        var type = typeof input;
+        return input === null || (type !== 'object' && type !== 'function');
+    };
+
+    var isActualNaN = $Number.isNaN || function isActualNaN(x) {
+        return x !== x;
+    };
+
+    var ES = {
+        // ES5 9.4
+        // http://es5.github.com/#x9.4
+        // http://jsperf.com/to-integer
+        /* replaceable with https://npmjs.com/package/es-abstract ES5.ToInteger */
+        ToInteger: function ToInteger(num) {
+            var n = +num;
+            if (isActualNaN(n)) {
+                n = 0;
+            } else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {
+                n = (n > 0 || -1) * Math.floor(Math.abs(n));
             }
+            return n;
+        },
+
+        /* replaceable with https://npmjs.com/package/es-abstract ES5.ToPrimitive */
+        ToPrimitive: function ToPrimitive(input) {
+            var val, valueOf, toStr;
+            if (isPrimitive(input)) {
+                return input;
+            }
+            valueOf = input.valueOf;
+            if (isCallable(valueOf)) {
+                val = valueOf.call(input);
+                if (isPrimitive(val)) {
+                    return val;
+                }
+            }
+            toStr = input.toString;
+            if (isCallable(toStr)) {
+                val = toStr.call(input);
+                if (isPrimitive(val)) {
+                    return val;
+                }
+            }
+            throw new TypeError();
+        },
+
+        // ES5 9.9
+        // http://es5.github.com/#x9.9
+        /* replaceable with https://npmjs.com/package/es-abstract ES5.ToObject */
+        ToObject: function (o) {
+            if (o == null) { // this matches both null and undefined
+                throw new TypeError("can't convert " + o + ' to object');
+            }
+            return $Object(o);
+        },
+
+        /* replaceable with https://npmjs.com/package/es-abstract ES5.ToUint32 */
+        ToUint32: function ToUint32(x) {
+            return x >>> 0;
         }
-        throw new TypeError();
-    },
-
-    // ES5 9.9
-    // http://es5.github.com/#x9.9
-    /* replaceable with https://npmjs.com/package/es-abstract ES5.ToObject */
-    ToObject: function (o) {
-        if (o == null) { // this matches both null and undefined
-            throw new TypeError("can't convert " + o + ' to object');
-        }
-        return $Object(o);
-    },
+    };
 
-    /* replaceable with https://npmjs.com/package/es-abstract ES5.ToUint32 */
-    ToUint32: function ToUint32(x) {
-        return x >>> 0;
-    }
-};
+    //
+    // Function
+    // ========
+    //
 
-//
-// Function
-// ========
-//
+    // ES-5 15.3.4.5
+    // http://es5.github.com/#x15.3.4.5
 
-// ES-5 15.3.4.5
-// http://es5.github.com/#x15.3.4.5
+    var Empty = function Empty() {};
 
-var Empty = function Empty() {};
+    defineProperties(FunctionPrototype, {
+        bind: function bind(that) { // .length is 1
+            // 1. Let Target be the this value.
+            var target = this;
+            // 2. If IsCallable(Target) is false, throw a TypeError exception.
+            if (!isCallable(target)) {
+                throw new TypeError('Function.prototype.bind called on incompatible ' + target);
+            }
+            // 3. Let A be a new (possibly empty) internal list of all of the
+            //   argument values provided after thisArg (arg1, arg2 etc), in order.
+            // XXX slicedArgs will stand in for "A" if used
+            var args = array_slice.call(arguments, 1); // for normal call
+            // 4. Let F be a new native ECMAScript object.
+            // 11. Set the [[Prototype]] internal property of F to the standard
+            //   built-in Function prototype object as specified in 15.3.3.1.
+            // 12. Set the [[Call]] internal property of F as described in
+            //   15.3.4.5.1.
+            // 13. Set the [[Construct]] internal property of F as described in
+            //   15.3.4.5.2.
+            // 14. Set the [[HasInstance]] internal property of F as described in
+            //   15.3.4.5.3.
+            var bound;
+            var binder = function () {
+
+                if (this instanceof bound) {
+                    // 15.3.4.5.2 [[Construct]]
+                    // When the [[Construct]] internal method of a function object,
+                    // F that was created using the bind function is called with a
+                    // list of arguments ExtraArgs, the following steps are taken:
+                    // 1. Let target be the value of F's [[TargetFunction]]
+                    //   internal property.
+                    // 2. If target has no [[Construct]] internal method, a
+                    //   TypeError exception is thrown.
+                    // 3. Let boundArgs be the value of F's [[BoundArgs]] internal
+                    //   property.
+                    // 4. Let args be a new list containing the same values as the
+                    //   list boundArgs in the same order followed by the same
+                    //   values as the list ExtraArgs in the same order.
+                    // 5. Return the result of calling the [[Construct]] internal
+                    //   method of target providing args as the arguments.
+
+                    var result = apply.call(
+                        target,
+                        this,
+                        array_concat.call(args, array_slice.call(arguments))
+                    );
+                    if ($Object(result) === result) {
+                        return result;
+                    }
+                    return this;
+
+                } else {
+                    // 15.3.4.5.1 [[Call]]
+                    // When the [[Call]] internal method of a function object, F,
+                    // which was created using the bind function is called with a
+                    // this value and a list of arguments ExtraArgs, the following
+                    // steps are taken:
+                    // 1. Let boundArgs be the value of F's [[BoundArgs]] internal
+                    //   property.
+                    // 2. Let boundThis be the value of F's [[BoundThis]] internal
+                    //   property.
+                    // 3. Let target be the value of F's [[TargetFunction]] internal
+                    //   property.
+                    // 4. Let args be a new list containing the same values as the
+                    //   list boundArgs in the same order followed by the same
+                    //   values as the list ExtraArgs in the same order.
+                    // 5. Return the result of calling the [[Call]] internal method
+                    //   of target providing boundThis as the this value and
+                    //   providing args as the arguments.
+
+                    // equiv: target.call(this, ...boundArgs, ...args)
+                    return apply.call(
+                        target,
+                        that,
+                        array_concat.call(args, array_slice.call(arguments))
+                    );
 
-defineProperties(FunctionPrototype, {
-    bind: function bind(that) { // .length is 1
-        // 1. Let Target be the this value.
-        var target = this;
-        // 2. If IsCallable(Target) is false, throw a TypeError exception.
-        if (!isCallable(target)) {
-            throw new TypeError('Function.prototype.bind called on incompatible ' + target);
-        }
-        // 3. Let A be a new (possibly empty) internal list of all of the
-        //   argument values provided after thisArg (arg1, arg2 etc), in order.
-        // XXX slicedArgs will stand in for "A" if used
-        var args = array_slice.call(arguments, 1); // for normal call
-        // 4. Let F be a new native ECMAScript object.
-        // 11. Set the [[Prototype]] internal property of F to the standard
-        //   built-in Function prototype object as specified in 15.3.3.1.
-        // 12. Set the [[Call]] internal property of F as described in
-        //   15.3.4.5.1.
-        // 13. Set the [[Construct]] internal property of F as described in
-        //   15.3.4.5.2.
-        // 14. Set the [[HasInstance]] internal property of F as described in
-        //   15.3.4.5.3.
-        var bound;
-        var binder = function () {
-
-            if (this instanceof bound) {
-                // 15.3.4.5.2 [[Construct]]
-                // When the [[Construct]] internal method of a function object,
-                // F that was created using the bind function is called with a
-                // list of arguments ExtraArgs, the following steps are taken:
-                // 1. Let target be the value of F's [[TargetFunction]]
-                //   internal property.
-                // 2. If target has no [[Construct]] internal method, a
-                //   TypeError exception is thrown.
-                // 3. Let boundArgs be the value of F's [[BoundArgs]] internal
-                //   property.
-                // 4. Let args be a new list containing the same values as the
-                //   list boundArgs in the same order followed by the same
-                //   values as the list ExtraArgs in the same order.
-                // 5. Return the result of calling the [[Construct]] internal
-                //   method of target providing args as the arguments.
-
-                var result = apply.call(
-                    target,
-                    this,
-                    array_concat.call(args, array_slice.call(arguments))
-                );
-                if ($Object(result) === result) {
-                    return result;
                 }
-                return this;
 
-            } else {
-                // 15.3.4.5.1 [[Call]]
-                // When the [[Call]] internal method of a function object, F,
-                // which was created using the bind function is called with a
-                // this value and a list of arguments ExtraArgs, the following
-                // steps are taken:
-                // 1. Let boundArgs be the value of F's [[BoundArgs]] internal
-                //   property.
-                // 2. Let boundThis be the value of F's [[BoundThis]] internal
-                //   property.
-                // 3. Let target be the value of F's [[TargetFunction]] internal
-                //   property.
-                // 4. Let args be a new list containing the same values as the
-                //   list boundArgs in the same order followed by the same
-                //   values as the list ExtraArgs in the same order.
-                // 5. Return the result of calling the [[Call]] internal method
-                //   of target providing boundThis as the this value and
-                //   providing args as the arguments.
-
-                // equiv: target.call(this, ...boundArgs, ...args)
-                return apply.call(
-                    target,
-                    that,
-                    array_concat.call(args, array_slice.call(arguments))
-                );
+            };
 
-            }
+            // 15. If the [[Class]] internal property of Target is "Function", then
+            //     a. Let L be the length property of Target minus the length of A.
+            //     b. Set the length own property of F to either 0 or L, whichever is
+            //       larger.
+            // 16. Else set the length own property of F to 0.
 
-        };
+            var boundLength = max(0, target.length - args.length);
 
-        // 15. If the [[Class]] internal property of Target is "Function", then
-        //     a. Let L be the length property of Target minus the length of A.
-        //     b. Set the length own property of F to either 0 or L, whichever is
-        //       larger.
-        // 16. Else set the length own property of F to 0.
+            // 17. Set the attributes of the length own property of F to the values
+            //   specified in 15.3.5.1.
+            var boundArgs = [];
+            for (var i = 0; i < boundLength; i++) {
+                array_push.call(boundArgs, '$' + i);
+            }
 
-        var boundLength = max(0, target.length - args.length);
+            // XXX Build a dynamic function with desired amount of arguments is the only
+            // way to set the length property of a function.
+            // In environments where Content Security Policies enabled (Chrome extensions,
+            // for ex.) all use of eval or Function costructor throws an exception.
+            // However in all of these environments Function.prototype.bind exists
+            // and so this code will never be executed.
+            bound = $Function('binder', 'return function (' + array_join.call(boundArgs, ',') + '){ return binder.apply(this, arguments); }')(binder);
+
+            if (target.prototype) {
+                Empty.prototype = target.prototype;
+                bound.prototype = new Empty();
+                // Clean up dangling references.
+                Empty.prototype = null;
+            }
 
-        // 17. Set the attributes of the length own property of F to the values
-        //   specified in 15.3.5.1.
-        var boundArgs = [];
-        for (var i = 0; i < boundLength; i++) {
-            array_push.call(boundArgs, '$' + i);
+            // TODO
+            // 18. Set the [[Extensible]] internal property of F to true.
+
+            // TODO
+            // 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).
+            // 20. Call the [[DefineOwnProperty]] internal method of F with
+            //   arguments "caller", PropertyDescriptor {[[Get]]: thrower, [[Set]]:
+            //   thrower, [[Enumerable]]: false, [[Configurable]]: false}, and
+            //   false.
+            // 21. Call the [[DefineOwnProperty]] internal method of F with
+            //   arguments "arguments", PropertyDescriptor {[[Get]]: thrower,
+            //   [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},
+            //   and false.
+
+            // TODO
+            // NOTE Function objects created using Function.prototype.bind do not
+            // have a prototype property or the [[Code]], [[FormalParameters]], and
+            // [[Scope]] internal properties.
+            // XXX can't delete prototype in pure-js.
+
+            // 22. Return F.
+            return bound;
         }
+    });
 
-        // XXX Build a dynamic function with desired amount of arguments is the only
-        // way to set the length property of a function.
-        // In environments where Content Security Policies enabled (Chrome extensions,
-        // for ex.) all use of eval or Function costructor throws an exception.
-        // However in all of these environments Function.prototype.bind exists
-        // and so this code will never be executed.
-        bound = $Function('binder', 'return function (' + array_join.call(boundArgs, ',') + '){ return binder.apply(this, arguments); }')(binder);
-
-        if (target.prototype) {
-            Empty.prototype = target.prototype;
-            bound.prototype = new Empty();
-            // Clean up dangling references.
-            Empty.prototype = null;
-        }
+    // _Please note: Shortcuts are defined after `Function.prototype.bind` as we
+    // use it in defining shortcuts.
+    var owns = call.bind(ObjectPrototype.hasOwnProperty);
+    var toStr = call.bind(ObjectPrototype.toString);
+    var arraySlice = call.bind(array_slice);
+    var arraySliceApply = apply.bind(array_slice);
+    var strSlice = call.bind(StringPrototype.slice);
+    var strSplit = call.bind(StringPrototype.split);
+    var strIndexOf = call.bind(StringPrototype.indexOf);
+    var pushCall = call.bind(array_push);
+    var isEnum = call.bind(ObjectPrototype.propertyIsEnumerable);
+    var arraySort = call.bind(ArrayPrototype.sort);
+
+    //
+    // Array
+    // =====
+    //
+
+    var isArray = $Array.isArray || function isArray(obj) {
+        return toStr(obj) === '[object Array]';
+    };
 
-        // TODO
-        // 18. Set the [[Extensible]] internal property of F to true.
-
-        // TODO
-        // 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).
-        // 20. Call the [[DefineOwnProperty]] internal method of F with
-        //   arguments "caller", PropertyDescriptor {[[Get]]: thrower, [[Set]]:
-        //   thrower, [[Enumerable]]: false, [[Configurable]]: false}, and
-        //   false.
-        // 21. Call the [[DefineOwnProperty]] internal method of F with
-        //   arguments "arguments", PropertyDescriptor {[[Get]]: thrower,
-        //   [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},
-        //   and false.
-
-        // TODO
-        // NOTE Function objects created using Function.prototype.bind do not
-        // have a prototype property or the [[Code]], [[FormalParameters]], and
-        // [[Scope]] internal properties.
-        // XXX can't delete prototype in pure-js.
-
-        // 22. Return F.
-        return bound;
-    }
-});
-
-// _Please note: Shortcuts are defined after `Function.prototype.bind` as we
-// use it in defining shortcuts.
-var owns = call.bind(ObjectPrototype.hasOwnProperty);
-var toStr = call.bind(ObjectPrototype.toString);
-var arraySlice = call.bind(array_slice);
-var arraySliceApply = apply.bind(array_slice);
-var strSlice = call.bind(StringPrototype.slice);
-var strSplit = call.bind(StringPrototype.split);
-var strIndexOf = call.bind(StringPrototype.indexOf);
-var pushCall = call.bind(array_push);
-var isEnum = call.bind(ObjectPrototype.propertyIsEnumerable);
-var arraySort = call.bind(ArrayPrototype.sort);
-
-//
-// Array
-// =====
-//
-
-var isArray = $Array.isArray || function isArray(obj) {
-    return toStr(obj) === '[object Array]';
-};
-
-// ES5 15.4.4.12
-// http://es5.github.com/#x15.4.4.13
-// Return len+argCount.
-// [bugfix, ielt8]
-// IE < 8 bug: [].unshift(0) === undefined but should be "1"
-var hasUnshiftReturnValueBug = [].unshift(0) !== 1;
-defineProperties(ArrayPrototype, {
-    unshift: function () {
-        array_unshift.apply(this, arguments);
-        return this.length;
-    }
-}, hasUnshiftReturnValueBug);
-
-// ES5 15.4.3.2
-// http://es5.github.com/#x15.4.3.2
-// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray
-defineProperties($Array, { isArray: isArray });
-
-// The IsCallable() check in the Array functions
-// has been replaced with a strict check on the
-// internal class of the object to trap cases where
-// the provided function was actually a regular
-// expression literal, which in V8 and
-// JavaScriptCore is a typeof "function".  Only in
-// V8 are regular expression literals permitted as
-// reduce parameters, so it is desirable in the
-// general case for the shim to match the more
-// strict and common behavior of rejecting regular
-// expressions.
-
-// ES5 15.4.4.18
-// http://es5.github.com/#x15.4.4.18
-// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/forEach
-
-// Check failure of by-index access of string characters (IE < 9)
-// and failure of `0 in boxedString` (Rhino)
-var boxedString = $Object('a');
-var splitString = boxedString[0] !== 'a' || !(0 in boxedString);
-
-var properlyBoxesContext = function properlyBoxed(method) {
-    // Check node 0.6.21 bug where third parameter is not boxed
-    var properlyBoxesNonStrict = true;
-    var properlyBoxesStrict = true;
-    var threwException = false;
-    if (method) {
-        try {
-            method.call('foo', function (_, __, context) {
-                if (typeof context !== 'object') {
-                    properlyBoxesNonStrict = false;
-                }
-            });
+    // ES5 15.4.4.12
+    // http://es5.github.com/#x15.4.4.13
+    // Return len+argCount.
+    // [bugfix, ielt8]
+    // IE < 8 bug: [].unshift(0) === undefined but should be "1"
+    var hasUnshiftReturnValueBug = [].unshift(0) !== 1;
+    defineProperties(ArrayPrototype, {
+        unshift: function () {
+            array_unshift.apply(this, arguments);
+            return this.length;
+        }
+    }, hasUnshiftReturnValueBug);
+
+    // ES5 15.4.3.2
+    // http://es5.github.com/#x15.4.3.2
+    // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray
+    defineProperties($Array, { isArray: isArray });
+
+    // The IsCallable() check in the Array functions
+    // has been replaced with a strict check on the
+    // internal class of the object to trap cases where
+    // the provided function was actually a regular
+    // expression literal, which in V8 and
+    // JavaScriptCore is a typeof "function".  Only in
+    // V8 are regular expression literals permitted as
+    // reduce parameters, so it is desirable in the
+    // general case for the shim to match the more
+    // strict and common behavior of rejecting regular
+    // expressions.
+
+    // ES5 15.4.4.18
+    // http://es5.github.com/#x15.4.4.18
+    // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/forEach
+
+    // Check failure of by-index access of string characters (IE < 9)
+    // and failure of `0 in boxedString` (Rhino)
+    var boxedString = $Object('a');
+    var splitString = boxedString[0] !== 'a' || !(0 in boxedString);
+
+    var properlyBoxesContext = function properlyBoxed(method) {
+        // Check node 0.6.21 bug where third parameter is not boxed
+        var properlyBoxesNonStrict = true;
+        var properlyBoxesStrict = true;
+        var threwException = false;
+        if (method) {
+            try {
+                method.call('foo', function (_, __, context) {
+                    if (typeof context !== 'object') {
+                        properlyBoxesNonStrict = false;
+                    }
+                });
 
-            method.call([1], function () {
-                'use strict';
+                method.call([1], function () {
+                    'use strict';
 
-                properlyBoxesStrict = typeof this === 'string';
-            }, 'x');
-        } catch (e) {
-            threwException = true;
-        }
-    }
-    return !!method && !threwException && properlyBoxesNonStrict && properlyBoxesStrict;
-};
-
-defineProperties(ArrayPrototype, {
-    forEach: function forEach(callbackfn/*, thisArg*/) {
-        var object = ES.ToObject(this);
-        var self = splitString && isString(this) ? strSplit(this, '') : object;
-        var i = -1;
-        var length = ES.ToUint32(self.length);
-        var T;
-        if (arguments.length > 1) {
-          T = arguments[1];
+                    properlyBoxesStrict = typeof this === 'string';
+                }, 'x');
+            } catch (e) {
+                threwException = true;
+            }
         }
+        return !!method && !threwException && properlyBoxesNonStrict && properlyBoxesStrict;
+    };
 
-        // If no callback function or if callback is not a callable function
-        if (!isCallable(callbackfn)) {
-            throw new TypeError('Array.prototype.forEach callback must be a function');
-        }
+    defineProperties(ArrayPrototype, {
+        forEach: function forEach(callbackfn/*, thisArg*/) {
+            var object = ES.ToObject(this);
+            var self = splitString && isString(this) ? strSplit(this, '') : object;
+            var i = -1;
+            var length = ES.ToUint32(self.length);
+            var T;
+            if (arguments.length > 1) {
+                T = arguments[1];
+            }
 
-        while (++i < length) {
-            if (i in self) {
-                // Invoke the callback function with call, passing arguments:
-                // context, property value, property key, thisArg object
-                if (typeof T === 'undefined') {
-                    callbackfn(self[i], i, object);
-                } else {
-                    callbackfn.call(T, self[i], i, object);
+            // If no callback function or if callback is not a callable function
+            if (!isCallable(callbackfn)) {
+                throw new TypeError('Array.prototype.forEach callback must be a function');
+            }
+
+            while (++i < length) {
+                if (i in self) {
+                    // Invoke the callback function with call, passing arguments:
+                    // context, property value, property key, thisArg object
+                    if (typeof T === 'undefined') {
+                        callbackfn(self[i], i, object);
+                    } else {
+                        callbackfn.call(T, self[i], i, object);
+                    }
                 }
             }
         }
-    }
-}, !properlyBoxesContext(ArrayPrototype.forEach));
-
-// ES5 15.4.4.19
-// http://es5.github.com/#x15.4.4.19
-// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/map
-defineProperties(ArrayPrototype, {
-    map: function map(callbackfn/*, thisArg*/) {
-        var object = ES.ToObject(this);
-        var self = splitString && isString(this) ? strSplit(this, '') : object;
-        var length = ES.ToUint32(self.length);
-        var result = $Array(length);
-        var T;
-        if (arguments.length > 1) {
-            T = arguments[1];
-        }
+    }, !properlyBoxesContext(ArrayPrototype.forEach));
 
-        // If no callback function or if callback is not a callable function
-        if (!isCallable(callbackfn)) {
-            throw new TypeError('Array.prototype.map callback must be a function');
-        }
+    // ES5 15.4.4.19
+    // http://es5.github.com/#x15.4.4.19
+    // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/map
+    defineProperties(ArrayPrototype, {
+        map: function map(callbackfn/*, thisArg*/) {
+            var object = ES.ToObject(this);
+            var self = splitString && isString(this) ? strSplit(this, '') : object;
+            var length = ES.ToUint32(self.length);
+            var result = $Array(length);
+            var T;
+            if (arguments.length > 1) {
+                T = arguments[1];
+            }
 
-        for (var i = 0; i < length; i++) {
-            if (i in self) {
-                if (typeof T === 'undefined') {
-                    result[i] = callbackfn(self[i], i, object);
-                } else {
-                    result[i] = callbackfn.call(T, self[i], i, object);
+            // If no callback function or if callback is not a callable function
+            if (!isCallable(callbackfn)) {
+                throw new TypeError('Array.prototype.map callback must be a function');
+            }
+
+            for (var i = 0; i < length; i++) {
+                if (i in self) {
+                    if (typeof T === 'undefined') {
+                        result[i] = callbackfn(self[i], i, object);
+                    } else {
+                        result[i] = callbackfn.call(T, self[i], i, object);
+                    }
                 }
             }
+            return result;
         }
-        return result;
-    }
-}, !properlyBoxesContext(ArrayPrototype.map));
-
-// ES5 15.4.4.20
-// http://es5.github.com/#x15.4.4.20
-// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/filter
-defineProperties(ArrayPrototype, {
-    filter: function filter(callbackfn/*, thisArg*/) {
-        var object = ES.ToObject(this);
-        var self = splitString && isString(this) ? strSplit(this, '') : object;
-        var length = ES.ToUint32(self.length);
-        var result = [];
-        var value;
-        var T;
-        if (arguments.length > 1) {
-            T = arguments[1];
-        }
+    }, !properlyBoxesContext(ArrayPrototype.map));
 
-        // If no callback function or if callback is not a callable function
-        if (!isCallable(callbackfn)) {
-            throw new TypeError('Array.prototype.filter callback must be a function');
-        }
+    // ES5 15.4.4.20
+    // http://es5.github.com/#x15.4.4.20
+    // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/filter
+    defineProperties(ArrayPrototype, {
+        filter: function filter(callbackfn/*, thisArg*/) {
+            var object = ES.ToObject(this);
+            var self = splitString && isString(this) ? strSplit(this, '') : object;
+            var length = ES.ToUint32(self.length);
+            var result = [];
+            var value;
+            var T;
+            if (arguments.length > 1) {
+                T = arguments[1];
+            }
+
+            // If no callback function or if callback is not a callable function
+            if (!isCallable(callbackfn)) {
+                throw new TypeError('Array.prototype.filter callback must be a function');
+            }
 
-        for (var i = 0; i < length; i++) {
-            if (i in self) {
-                value = self[i];
-                if (typeof T === 'undefined' ? callbackfn(value, i, object) : callbackfn.call(T, value, i, object)) {
-                    pushCall(result, value);
+            for (var i = 0; i < length; i++) {
+                if (i in self) {
+                    value = self[i];
+                    if (typeof T === 'undefined' ? callbackfn(value, i, object) : callbackfn.call(T, value, i, object)) {
+                        pushCall(result, value);
+                    }
                 }
             }
+            return result;
         }
-        return result;
-    }
-}, !properlyBoxesContext(ArrayPrototype.filter));
-
-// ES5 15.4.4.16
-// http://es5.github.com/#x15.4.4.16
-// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/every
-defineProperties(ArrayPrototype, {
-    every: function every(callbackfn/*, thisArg*/) {
-        var object = ES.ToObject(this);
-        var self = splitString && isString(this) ? strSplit(this, '') : object;
-        var length = ES.ToUint32(self.length);
-        var T;
-        if (arguments.length > 1) {
-            T = arguments[1];
-        }
+    }, !properlyBoxesContext(ArrayPrototype.filter));
 
-        // If no callback function or if callback is not a callable function
-        if (!isCallable(callbackfn)) {
-            throw new TypeError('Array.prototype.every callback must be a function');
-        }
+    // ES5 15.4.4.16
+    // http://es5.github.com/#x15.4.4.16
+    // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/every
+    defineProperties(ArrayPrototype, {
+        every: function every(callbackfn/*, thisArg*/) {
+            var object = ES.ToObject(this);
+            var self = splitString && isString(this) ? strSplit(this, '') : object;
+            var length = ES.ToUint32(self.length);
+            var T;
+            if (arguments.length > 1) {
+                T = arguments[1];
+            }
 
-        for (var i = 0; i < length; i++) {
-            if (i in self && !(typeof T === 'undefined' ? callbackfn(self[i], i, object) : callbackfn.call(T, self[i], i, object))) {
-                return false;
+            // If no callback function or if callback is not a callable function
+            if (!isCallable(callbackfn)) {
+                throw new TypeError('Array.prototype.every callback must be a function');
             }
-        }
-        return true;
-    }
-}, !properlyBoxesContext(ArrayPrototype.every));
-
-// ES5 15.4.4.17
-// http://es5.github.com/#x15.4.4.17
-// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some
-defineProperties(ArrayPrototype, {
-    some: function some(callbackfn/*, thisArg */) {
-        var object = ES.ToObject(this);
-        var self = splitString && isString(this) ? strSplit(this, '') : object;
-        var length = ES.ToUint32(self.length);
-        var T;
-        if (arguments.length > 1) {
-            T = arguments[1];
-        }
 
-        // If no callback function or if callback is not a callable function
-        if (!isCallable(callbackfn)) {
-            throw new TypeError('Array.prototype.some callback must be a function');
+            for (var i = 0; i < length; i++) {
+                if (i in self && !(typeof T === 'undefined' ? callbackfn(self[i], i, object) : callbackfn.call(T, self[i], i, object))) {
+                    return false;
+                }
+            }
+            return true;
         }
+    }, !properlyBoxesContext(ArrayPrototype.every));
 
-        for (var i = 0; i < length; i++) {
-            if (i in self && (typeof T === 'undefined' ? callbackfn(self[i], i, object) : callbackfn.call(T, self[i], i, object))) {
-                return true;
+    // ES5 15.4.4.17
+    // http://es5.github.com/#x15.4.4.17
+    // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some
+    defineProperties(ArrayPrototype, {
+        some: function some(callbackfn/*, thisArg */) {
+            var object = ES.ToObject(this);
+            var self = splitString && isString(this) ? strSplit(this, '') : object;
+            var length = ES.ToUint32(self.length);
+            var T;
+            if (arguments.length > 1) {
+                T = arguments[1];
             }
-        }
-        return false;
+
+            // If no callback function or if callback is not a callable function
+            if (!isCallable(callbackfn)) {
+                throw new TypeError('Array.prototype.some callback must be a function');
+            }
+
+            for (var i = 0; i < length; i++) {
+                if (i in self && (typeof T === 'undefined' ? callbackfn(self[i], i, object) : callbackfn.call(T, self[i], i, object))) {
+                    return true;
+                }
+            }
+            return false;
+        }
+    }, !properlyBoxesContext(ArrayPrototype.some));
+
+    // ES5 15.4.4.21
+    // http://es5.github.com/#x15.4.4.21
+    // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduce
+    var reduceCoercesToObject = false;
+    if (ArrayPrototype.reduce) {
+        reduceCoercesToObject = typeof ArrayPrototype.reduce.call('es5', function (_, __, ___, list) {
+            return list;
+        }) === 'object';
     }
-}, !properlyBoxesContext(ArrayPrototype.some));
-
-// ES5 15.4.4.21
-// http://es5.github.com/#x15.4.4.21
-// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduce
-var reduceCoercesToObject = false;
-if (ArrayPrototype.reduce) {
-    reduceCoercesToObject = typeof ArrayPrototype.reduce.call('es5', function (_, __, ___, list) {
-        return list;
-    }) === 'object';
-}
-defineProperties(ArrayPrototype, {
-    reduce: function reduce(callbackfn/*, initialValue*/) {
-        var object = ES.ToObject(this);
-        var self = splitString && isString(this) ? strSplit(this, '') : object;
-        var length = ES.ToUint32(self.length);
-
-        // If no callback function or if callback is not a callable function
-        if (!isCallable(callbackfn)) {
-            throw new TypeError('Array.prototype.reduce callback must be a function');
-        }
+    defineProperties(ArrayPrototype, {
+        reduce: function reduce(callbackfn/*, initialValue*/) {
+            var object = ES.ToObject(this);
+            var self = splitString && isString(this) ? strSplit(this, '') : object;
+            var length = ES.ToUint32(self.length);
+
+            // If no callback function or if callback is not a callable function
+            if (!isCallable(callbackfn)) {
+                throw new TypeError('Array.prototype.reduce callback must be a function');
+            }
 
-        // no value to return if no initial value and an empty array
-        if (length === 0 && arguments.length === 1) {
-            throw new TypeError('reduce of empty array with no initial value');
-        }
+            // no value to return if no initial value and an empty array
+            if (length === 0 && arguments.length === 1) {
+                throw new TypeError('reduce of empty array with no initial value');
+            }
 
-        var i = 0;
-        var result;
-        if (arguments.length >= 2) {
-            result = arguments[1];
-        } else {
-            do {
+            var i = 0;
+            var result;
+            if (arguments.length >= 2) {
+                result = arguments[1];
+            } else {
+                do {
+                    if (i in self) {
+                        result = self[i++];
+                        break;
+                    }
+
+                    // if array contains no values, no initial value to return
+                    if (++i >= length) {
+                        throw new TypeError('reduce of empty array with no initial value');
+                    }
+                } while (true);
+            }
+
+            for (; i < length; i++) {
                 if (i in self) {
-                    result = self[i++];
-                    break;
+                    result = callbackfn(result, self[i], i, object);
                 }
+            }
 
-                // if array contains no values, no initial value to return
-                if (++i >= length) {
-                    throw new TypeError('reduce of empty array with no initial value');
-                }
-            } while (true);
+            return result;
         }
+    }, !reduceCoercesToObject);
 
-        for (; i < length; i++) {
-            if (i in self) {
-                result = callbackfn(result, self[i], i, object);
+    // ES5 15.4.4.22
+    // http://es5.github.com/#x15.4.4.22
+    // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduceRight
+    var reduceRightCoercesToObject = false;
+    if (ArrayPrototype.reduceRight) {
+        reduceRightCoercesToObject = typeof ArrayPrototype.reduceRight.call('es5', function (_, __, ___, list) {
+            return list;
+        }) === 'object';
+    }
+    defineProperties(ArrayPrototype, {
+        reduceRight: function reduceRight(callbackfn/*, initial*/) {
+            var object = ES.ToObject(this);
+            var self = splitString && isString(this) ? strSplit(this, '') : object;
+            var length = ES.ToUint32(self.length);
+
+            // If no callback function or if callback is not a callable function
+            if (!isCallable(callbackfn)) {
+                throw new TypeError('Array.prototype.reduceRight callback must be a function');
             }
-        }
 
-        return result;
-    }
-}, !reduceCoercesToObject);
-
-// ES5 15.4.4.22
-// http://es5.github.com/#x15.4.4.22
-// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduceRight
-var reduceRightCoercesToObject = false;
-if (ArrayPrototype.reduceRight) {
-    reduceRightCoercesToObject = typeof ArrayPrototype.reduceRight.call('es5', function (_, __, ___, list) {
-        return list;
-    }) === 'object';
-}
-defineProperties(ArrayPrototype, {
-    reduceRight: function reduceRight(callbackfn/*, initial*/) {
-        var object = ES.ToObject(this);
-        var self = splitString && isString(this) ? strSplit(this, '') : object;
-        var length = ES.ToUint32(self.length);
-
-        // If no callback function or if callback is not a callable function
-        if (!isCallable(callbackfn)) {
-            throw new TypeError('Array.prototype.reduceRight callback must be a function');
-        }
+            // no value to return if no initial value, empty array
+            if (length === 0 && arguments.length === 1) {
+                throw new TypeError('reduceRight of empty array with no initial value');
+            }
 
-        // no value to return if no initial value, empty array
-        if (length === 0 && arguments.length === 1) {
-            throw new TypeError('reduceRight of empty array with no initial value');
-        }
+            var result;
+            var i = length - 1;
+            if (arguments.length >= 2) {
+                result = arguments[1];
+            } else {
+                do {
+                    if (i in self) {
+                        result = self[i--];
+                        break;
+                    }
+
+                    // if array contains no values, no initial value to return
+                    if (--i < 0) {
+                        throw new TypeError('reduceRight of empty array with no initial value');
+                    }
+                } while (true);
+            }
+
+            if (i < 0) {
+                return result;
+            }
 
-        var result;
-        var i = length - 1;
-        if (arguments.length >= 2) {
-            result = arguments[1];
-        } else {
             do {
                 if (i in self) {
-                    result = self[i--];
-                    break;
+                    result = callbackfn(result, self[i], i, object);
                 }
+            } while (i--);
 
-                // if array contains no values, no initial value to return
-                if (--i < 0) {
-                    throw new TypeError('reduceRight of empty array with no initial value');
-                }
-            } while (true);
-        }
-
-        if (i < 0) {
             return result;
         }
+    }, !reduceRightCoercesToObject);
+
+    // ES5 15.4.4.14
+    // http://es5.github.com/#x15.4.4.14
+    // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
+    var hasFirefox2IndexOfBug = ArrayPrototype.indexOf && [0, 1].indexOf(1, 2) !== -1;
+    defineProperties(ArrayPrototype, {
+        indexOf: function indexOf(searchElement/*, fromIndex */) {
+            var self = splitString && isString(this) ? strSplit(this, '') : ES.ToObject(this);
+            var length = ES.ToUint32(self.length);
 
-        do {
-            if (i in self) {
-                result = callbackfn(result, self[i], i, object);
+            if (length === 0) {
+                return -1;
             }
-        } while (i--);
 
-        return result;
-    }
-}, !reduceRightCoercesToObject);
-
-// ES5 15.4.4.14
-// http://es5.github.com/#x15.4.4.14
-// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
-var hasFirefox2IndexOfBug = ArrayPrototype.indexOf && [0, 1].indexOf(1, 2) !== -1;
-defineProperties(ArrayPrototype, {
-    indexOf: function indexOf(searchElement/*, fromIndex */) {
-        var self = splitString && isString(this) ? strSplit(this, '') : ES.ToObject(this);
-        var length = ES.ToUint32(self.length);
-
-        if (length === 0) {
+            var i = 0;
+            if (arguments.length > 1) {
+                i = ES.ToInteger(arguments[1]);
+            }
+
+            // handle negative indices
+            i = i >= 0 ? i : max(0, length + i);
+            for (; i < length; i++) {
+                if (i in self && self[i] === searchElement) {
+                    return i;
+                }
+            }
             return -1;
         }
+    }, hasFirefox2IndexOfBug);
 
-        var i = 0;
-        if (arguments.length > 1) {
-            i = ES.ToInteger(arguments[1]);
-        }
+    // ES5 15.4.4.15
+    // http://es5.github.com/#x15.4.4.15
+    // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/lastIndexOf
+    var hasFirefox2LastIndexOfBug = ArrayPrototype.lastIndexOf && [0, 1].lastIndexOf(0, -3) !== -1;
+    defineProperties(ArrayPrototype, {
+        lastIndexOf: function lastIndexOf(searchElement/*, fromIndex */) {
+            var self = splitString && isString(this) ? strSplit(this, '') : ES.ToObject(this);
+            var length = ES.ToUint32(self.length);
 
-        // handle negative indices
-        i = i >= 0 ? i : max(0, length + i);
-        for (; i < length; i++) {
-            if (i in self && self[i] === searchElement) {
-                return i;
+            if (length === 0) {
+                return -1;
             }
-        }
-        return -1;
-    }
-}, hasFirefox2IndexOfBug);
-
-// ES5 15.4.4.15
-// http://es5.github.com/#x15.4.4.15
-// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/lastIndexOf
-var hasFirefox2LastIndexOfBug = ArrayPrototype.lastIndexOf && [0, 1].lastIndexOf(0, -3) !== -1;
-defineProperties(ArrayPrototype, {
-    lastIndexOf: function lastIndexOf(searchElement/*, fromIndex */) {
-        var self = splitString && isString(this) ? strSplit(this, '') : ES.ToObject(this);
-        var length = ES.ToUint32(self.length);
-
-        if (length === 0) {
-            return -1;
-        }
-        var i = length - 1;
-        if (arguments.length > 1) {
-            i = min(i, ES.ToInteger(arguments[1]));
-        }
-        // handle negative indices
-        i = i >= 0 ? i : length - Math.abs(i);
-        for (; i >= 0; i--) {
-            if (i in self && searchElement === self[i]) {
-                return i;
+            var i = length - 1;
+            if (arguments.length > 1) {
+                i = min(i, ES.ToInteger(arguments[1]));
             }
+            // handle negative indices
+            i = i >= 0 ? i : length - Math.abs(i);
+            for (; i >= 0; i--) {
+                if (i in self && searchElement === self[i]) {
+                    return i;
+                }
+            }
+            return -1;
         }
-        return -1;
-    }
-}, hasFirefox2LastIndexOfBug);
-
-// ES5 15.4.4.12
-// http://es5.github.com/#x15.4.4.12
-var spliceNoopReturnsEmptyArray = (function () {
-    var a = [1, 2];
-    var result = a.splice();
-    return a.length === 2 && isArray(result) && result.length === 0;
-}());
-defineProperties(ArrayPrototype, {
-    // Safari 5.0 bug where .splice() returns undefined
-    splice: function splice(start, deleteCount) {
-        if (arguments.length === 0) {
-            return [];
-        } else {
-            return array_splice.apply(this, arguments);
-        }
-    }
-}, !spliceNoopReturnsEmptyArray);
-
-var spliceWorksWithEmptyObject = (function () {
-    var obj = {};
-    ArrayPrototype.splice.call(obj, 0, 0, 1);
-    return obj.length === 1;
-}());
-defineProperties(ArrayPrototype, {
-    splice: function splice(start, deleteCount) {
-        if (arguments.length === 0) { return []; }
-        var args = arguments;
-        this.length = max(ES.ToInteger(this.length), 0);
-        if (arguments.length > 0 && typeof deleteCount !== 'number') {
-            args = arraySlice(arguments);
-            if (args.length < 2) {
-                pushCall(args, this.length - start);
+    }, hasFirefox2LastIndexOfBug);
+
+    // ES5 15.4.4.12
+    // http://es5.github.com/#x15.4.4.12
+    var spliceNoopReturnsEmptyArray = (function () {
+        var a = [1, 2];
+        var result = a.splice();
+        return a.length === 2 && isArray(result) && result.length === 0;
+    }());
+    defineProperties(ArrayPrototype, {
+        // Safari 5.0 bug where .splice() returns undefined
+        splice: function splice(start, deleteCount) {
+            if (arguments.length === 0) {
+                return [];
             } else {
-                args[1] = ES.ToInteger(deleteCount);
+                return array_splice.apply(this, arguments);
             }
         }
-        return array_splice.apply(this, args);
-    }
-}, !spliceWorksWithEmptyObject);
-var spliceWorksWithLargeSparseArrays = (function () {
-    // Per https://github.com/es-shims/es5-shim/issues/295
-    // Safari 7/8 breaks with sparse arrays of size 1e5 or greater
-    var arr = new $Array(1e5);
-    // note: the index MUST be 8 or larger or the test will false pass
-    arr[8] = 'x';
-    arr.splice(1, 1);
-    // note: this test must be defined *after* the indexOf shim
-    // per https://github.com/es-shims/es5-shim/issues/313
-    return arr.indexOf('x') === 7;
-}());
-var spliceWorksWithSmallSparseArrays = (function () {
-    // Per https://github.com/es-shims/es5-shim/issues/295
-    // Opera 12.15 breaks on this, no idea why.
-    var n = 256;
-    var arr = [];
-    arr[n] = 'a';
-    arr.splice(n + 1, 0, 'b');
-    return arr[n] === 'a';
-}());
-defineProperties(ArrayPrototype, {
-    splice: function splice(start, deleteCount) {
-        var O = ES.ToObject(this);
-        var A = [];
-        var len = ES.ToUint32(O.length);
-        var relativeStart = ES.ToInteger(start);
-        var actualStart = relativeStart < 0 ? max((len + relativeStart), 0) : min(relativeStart, len);
-        var actualDeleteCount = min(max(ES.ToInteger(deleteCount), 0), len - actualStart);
-
-        var k = 0;
-        var from;
-        while (k < actualDeleteCount) {
-            from = $String(actualStart + k);
-            if (owns(O, from)) {
-                A[k] = O[from];
-            }
-            k += 1;
-        }
+    }, !spliceNoopReturnsEmptyArray);
 
-        var items = arraySlice(arguments, 2);
-        var itemCount = items.length;
-        var to;
-        if (itemCount < actualDeleteCount) {
-            k = actualStart;
-            var maxK = len - actualDeleteCount;
-            while (k < maxK) {
-                from = $String(k + actualDeleteCount);
-                to = $String(k + itemCount);
-                if (owns(O, from)) {
-                    O[to] = O[from];
+    var spliceWorksWithEmptyObject = (function () {
+        var obj = {};
+        ArrayPrototype.splice.call(obj, 0, 0, 1);
+        return obj.length === 1;
+    }());
+    defineProperties(ArrayPrototype, {
+        splice: function splice(start, deleteCount) {
+            if (arguments.length === 0) {
+                return [];
+            }
+            var args = arguments;
+            this.length = max(ES.ToInteger(this.length), 0);
+            if (arguments.length > 0 && typeof deleteCount !== 'number') {
+                args = arraySlice(arguments);
+                if (args.length < 2) {
+                    pushCall(args, this.length - start);
                 } else {
-                    delete O[to];
+                    args[1] = ES.ToInteger(deleteCount);
                 }
-                k += 1;
             }
-            k = len;
-            var minK = len - actualDeleteCount + itemCount;
-            while (k > minK) {
-                delete O[k - 1];
-                k -= 1;
-            }
-        } else if (itemCount > actualDeleteCount) {
-            k = len - actualDeleteCount;
-            while (k > actualStart) {
-                from = $String(k + actualDeleteCount - 1);
-                to = $String(k + itemCount - 1);
+            return array_splice.apply(this, args);
+        }
+    }, !spliceWorksWithEmptyObject);
+    var spliceWorksWithLargeSparseArrays = (function () {
+        // Per https://github.com/es-shims/es5-shim/issues/295
+        // Safari 7/8 breaks with sparse arrays of size 1e5 or greater
+        var arr = new $Array(1e5);
+        // note: the index MUST be 8 or larger or the test will false pass
+        arr[8] = 'x';
+        arr.splice(1, 1);
+        // note: this test must be defined *after* the indexOf shim
+        // per https://github.com/es-shims/es5-shim/issues/313
+        return arr.indexOf('x') === 7;
+    }());
+    var spliceWorksWithSmallSparseArrays = (function () {
+        // Per https://github.com/es-shims/es5-shim/issues/295
+        // Opera 12.15 breaks on this, no idea why.
+        var n = 256;
+        var arr = [];
+        arr[n] = 'a';
+        arr.splice(n + 1, 0, 'b');
+        return arr[n] === 'a';
+    }());
+    defineProperties(ArrayPrototype, {
+        splice: function splice(start, deleteCount) {
+            var O = ES.ToObject(this);
+            var A = [];
+            var len = ES.ToUint32(O.length);
+            var relativeStart = ES.ToInteger(start);
+            var actualStart = relativeStart < 0 ? max((len + relativeStart), 0) : min(relativeStart, len);
+            var actualDeleteCount = min(max(ES.ToInteger(deleteCount), 0), len - actualStart);
+
+            var k = 0;
+            var from;
+            while (k < actualDeleteCount) {
+                from = $String(actualStart + k);
                 if (owns(O, from)) {
-                    O[to] = O[from];
-                } else {
-                    delete O[to];
+                    A[k] = O[from];
                 }
-                k -= 1;
+                k += 1;
             }
+
+            var items = arraySlice(arguments, 2);
+            var itemCount = items.length;
+            var to;
+            if (itemCount < actualDeleteCount) {
+                k = actualStart;
+                var maxK = len - actualDeleteCount;
+                while (k < maxK) {
+                    from = $String(k + actualDeleteCount);
+                    to = $String(k + itemCount);
+                    if (owns(O, from)) {
+                        O[to] = O[from];
+                    } else {
+                        delete O[to];
+                    }
+                    k += 1;
+                }
+                k = len;
+                var minK = len - actualDeleteCount + itemCount;
+                while (k > minK) {
+                    delete O[k - 1];
+                    k -= 1;
+                }
+            } else if (itemCount > actualDeleteCount) {
+                k = len - actualDeleteCount;
+                while (k > actualStart) {
+                    from = $String(k + actualDeleteCount - 1);
+                    to = $String(k + itemCount - 1);
+                    if (owns(O, from)) {
+                        O[to] = O[from];
+                    } else {
+                        delete O[to];
+                    }
+                    k -= 1;
+                }
+            }
+            k = actualStart;
+            for (var i = 0; i < items.length; ++i) {
+                O[k] = items[i];
+                k += 1;
+            }
+            O.length = len - actualDeleteCount + itemCount;
+
+            return A;
         }
-        k = actualStart;
-        for (var i = 0; i < items.length; ++i) {
-            O[k] = items[i];
-            k += 1;
-        }
-        O.length = len - actualDeleteCount + itemCount;
+    }, !spliceWorksWithLargeSparseArrays || !spliceWorksWithSmallSparseArrays);
 
-        return A;
+    var originalJoin = ArrayPrototype.join;
+    var hasStringJoinBug;
+    try {
+        hasStringJoinBug = Array.prototype.join.call('123', ',') !== '1,2,3';
+    } catch (e) {
+        hasStringJoinBug = true;
     }
-}, !spliceWorksWithLargeSparseArrays || !spliceWorksWithSmallSparseArrays);
-
-var originalJoin = ArrayPrototype.join;
-var hasStringJoinBug;
-try {
-    hasStringJoinBug = Array.prototype.join.call('123', ',') !== '1,2,3';
-} catch (e) {
-    hasStringJoinBug = true;
-}
-if (hasStringJoinBug) {
-    defineProperties(ArrayPrototype, {
-        join: function join(separator) {
-            var sep = typeof separator === 'undefined' ? ',' : separator;
-            return originalJoin.call(isString(this) ? strSplit(this, '') : this, sep);
+    if (hasStringJoinBug) {
+        defineProperties(ArrayPrototype, {
+            join: function join(separator) {
+                var sep = typeof separator === 'undefined' ? ',' : separator;
+                return originalJoin.call(isString(this) ? strSplit(this, '') : this, sep);
+            }
+        }, hasStringJoinBug);
+    }
+
+    var hasJoinUndefinedBug = [1, 2].join(undefined) !== '1,2';
+    if (hasJoinUndefinedBug) {
+        defineProperties(ArrayPrototype, {
+            join: function join(separator) {
+                var sep = typeof separator === 'undefined' ? ',' : separator;
+                return originalJoin.call(this, sep);
+            }
+        }, hasJoinUndefinedBug);
+    }
+
+    var pushShim = function push(item) {
+        var O = ES.ToObject(this);
+        var n = ES.ToUint32(O.length);
+        var i = 0;
+        while (i < arguments.length) {
+            O[n + i] = arguments[i];
+            i += 1;
         }
-    }, hasStringJoinBug);
-}
+        O.length = n + i;
+        return n + i;
+    };
 
-var hasJoinUndefinedBug = [1, 2].join(undefined) !== '1,2';
-if (hasJoinUndefinedBug) {
+    var pushIsNotGeneric = (function () {
+        var obj = {};
+        var result = Array.prototype.push.call(obj, undefined);
+        return result !== 1 || obj.length !== 1 || typeof obj[0] !== 'undefined' || !owns(obj, 0);
+    }());
     defineProperties(ArrayPrototype, {
-        join: function join(separator) {
-            var sep = typeof separator === 'undefined' ? ',' : separator;
-            return originalJoin.call(this, sep);
+        push: function push(item) {
+            if (isArray(this)) {
+                return array_push.apply(this, arguments);
+            }
+            return pushShim.apply(this, arguments);
         }
-    }, hasJoinUndefinedBug);
-}
-
-var pushShim = function push(item) {
-    var O = ES.ToObject(this);
-    var n = ES.ToUint32(O.length);
-    var i = 0;
-    while (i < arguments.length) {
-        O[n + i] = arguments[i];
-        i += 1;
-    }
-    O.length = n + i;
-    return n + i;
-};
-
-var pushIsNotGeneric = (function () {
-    var obj = {};
-    var result = Array.prototype.push.call(obj, undefined);
-    return result !== 1 || obj.length !== 1 || typeof obj[0] !== 'undefined' || !owns(obj, 0);
-}());
-defineProperties(ArrayPrototype, {
-    push: function push(item) {
-        if (isArray(this)) {
-            return array_push.apply(this, arguments);
+    }, pushIsNotGeneric);
+
+    // This fixes a very weird bug in Opera 10.6 when pushing `undefined
+    var pushUndefinedIsWeird = (function () {
+        var arr = [];
+        var result = arr.push(undefined);
+        return result !== 1 || arr.length !== 1 || typeof arr[0] !== 'undefined' || !owns(arr, 0);
+    }());
+    defineProperties(ArrayPrototype, { push: pushShim }, pushUndefinedIsWeird);
+
+    // ES5 15.2.3.14
+    // http://es5.github.io/#x15.4.4.10
+    // Fix boxed string bug
+    defineProperties(ArrayPrototype, {
+        slice: function (start, end) {
+            var arr = isString(this) ? strSplit(this, '') : this;
+            return arraySliceApply(arr, arguments);
         }
-        return pushShim.apply(this, arguments);
-    }
-}, pushIsNotGeneric);
-
-// This fixes a very weird bug in Opera 10.6 when pushing `undefined
-var pushUndefinedIsWeird = (function () {
-    var arr = [];
-    var result = arr.push(undefined);
-    return result !== 1 || arr.length !== 1 || typeof arr[0] !== 'undefined' || !owns(arr, 0);
-}());
-defineProperties(ArrayPrototype, { push: pushShim }, pushUndefinedIsWeird);
-
-// ES5 15.2.3.14
-// http://es5.github.io/#x15.4.4.10
-// Fix boxed string bug
-defineProperties(ArrayPrototype, {
-    slice: function (start, end) {
-        var arr = isString(this) ? strSplit(this, '') : this;
-        return arraySliceApply(arr, arguments);
-    }
-}, splitString);
+    }, splitString);
 
-var sortIgnoresNonFunctions = (function () {
-    try {
-        [1, 2].sort(null);
-        [1, 2].sort({});
-        return true;
-    } catch (e) { /**/ }
-    return false;
-}());
-var sortThrowsOnRegex = (function () {
-    // this is a problem in Firefox 4, in which `typeof /a/ === 'function'`
-    try {
-        [1, 2].sort(/a/);
+    var sortIgnoresNonFunctions = (function () {
+        try {
+            [1, 2].sort(null);
+            [1, 2].sort({});
+            return true;
+        } catch (e) {}
         return false;
-    } catch (e) { /**/ }
-    return true;
-}());
-var sortIgnoresUndefined = (function () {
-    // applies in IE 8, for one.
-    try {
-        [1, 2].sort(undefined);
+    }());
+    var sortThrowsOnRegex = (function () {
+        // this is a problem in Firefox 4, in which `typeof /a/ === 'function'`
+        try {
+            [1, 2].sort(/a/);
+            return false;
+        } catch (e) {}
         return true;
-    } catch (e) { /**/ }
-    return false;
-}());
-defineProperties(ArrayPrototype, {
-    sort: function sort(compareFn) {
-        if (typeof compareFn === 'undefined') {
-            return arraySort(this);
-        }
-        if (!isCallable(compareFn)) {
-            throw new TypeError('Array.prototype.sort callback must be a function');
-        }
-        return arraySort(this, compareFn);
-    }
-}, sortIgnoresNonFunctions || !sortIgnoresUndefined || !sortThrowsOnRegex);
-
-//
-// Object
-// ======
-//
-
-// ES5 15.2.3.14
-// http://es5.github.com/#x15.2.3.14
-
-// http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation
-var hasDontEnumBug = !({ 'toString': null }).propertyIsEnumerable('toString');
-var hasProtoEnumBug = function () {}.propertyIsEnumerable('prototype');
-var hasStringEnumBug = !owns('x', '0');
-var equalsConstructorPrototype = function (o) {
-    var ctor = o.constructor;
-    return ctor && ctor.prototype === o;
-};
-var blacklistedKeys = {
-    $window: true,
-    $console: true,
-    $parent: true,
-    $self: true,
-    $frame: true,
-    $frames: true,
-    $frameElement: true,
-    $webkitIndexedDB: true,
-    $webkitStorageInfo: true,
-    $external: true
-};
-var hasAutomationEqualityBug = (function () {
-    /* globals window */
-    if (typeof window === 'undefined') { return false; }
-    for (var k in window) {
+    }());
+    var sortIgnoresUndefined = (function () {
+        // applies in IE 8, for one.
         try {
-            if (!blacklistedKeys['$' + k] && owns(window, k) && window[k] !== null && typeof window[k] === 'object') {
-                equalsConstructorPrototype(window[k]);
-            }
-        } catch (e) {
+            [1, 2].sort(undefined);
             return true;
-        }
-    }
-    return false;
-}());
-var equalsConstructorPrototypeIfNotBuggy = function (object) {
-    if (typeof window === 'undefined' || !hasAutomationEqualityBug) { return equalsConstructorPrototype(object); }
-    try {
-        return equalsConstructorPrototype(object);
-    } catch (e) {
+        } catch (e) {}
         return false;
-    }
-};
-var dontEnums = [
-    'toString',
-    'toLocaleString',
-    'valueOf',
-    'hasOwnProperty',
-    'isPrototypeOf',
-    'propertyIsEnumerable',
-    'constructor'
-];
-var dontEnumsLength = dontEnums.length;
-
-// taken directly from https://github.com/ljharb/is-arguments/blob/master/index.js
-// can be replaced with require('is-arguments') if we ever use a build process instead
-var isStandardArguments = function isArguments(value) {
-    return toStr(value) === '[object Arguments]';
-};
-var isLegacyArguments = function isArguments(value) {
-    return value !== null &&
-        typeof value === 'object' &&
-        typeof value.length === 'number' &&
-        value.length >= 0 &&
-        !isArray(value) &&
-        isCallable(value.callee);
-};
-var isArguments = isStandardArguments(arguments) ? isStandardArguments : isLegacyArguments;
-
-defineProperties($Object, {
-    keys: function keys(object) {
-        var isFn = isCallable(object);
-        var isArgs = isArguments(object);
-        var isObject = object !== null && typeof object === 'object';
-        var isStr = isObject && isString(object);
-
-        if (!isObject && !isFn && !isArgs) {
-            throw new TypeError('Object.keys called on a non-object');
+    }());
+    defineProperties(ArrayPrototype, {
+        sort: function sort(compareFn) {
+            if (typeof compareFn === 'undefined') {
+                return arraySort(this);
+            }
+            if (!isCallable(compareFn)) {
+                throw new TypeError('Array.prototype.sort callback must be a function');
+            }
+            return arraySort(this, compareFn);
         }
+    }, sortIgnoresNonFunctions || !sortIgnoresUndefined || !sortThrowsOnRegex);
+
+    //
+    // Object
+    // ======
+    //
 
-        var theKeys = [];
-        var skipProto = hasProtoEnumBug && isFn;
-        if ((isStr && hasStringEnumBug) || isArgs) {
-            for (var i = 0; i < object.length; ++i) {
-                pushCall(theKeys, $String(i));
+    // ES5 15.2.3.14
+    // http://es5.github.com/#x15.2.3.14
+
+    // http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation
+    var hasDontEnumBug = !isEnum({ 'toString': null }, 'toString');
+    var hasProtoEnumBug = isEnum(function () {}, 'prototype');
+    var hasStringEnumBug = !owns('x', '0');
+    var equalsConstructorPrototype = function (o) {
+        var ctor = o.constructor;
+        return ctor && ctor.prototype === o;
+    };
+    var blacklistedKeys = {
+        $window: true,
+        $console: true,
+        $parent: true,
+        $self: true,
+        $frame: true,
+        $frames: true,
+        $frameElement: true,
+        $webkitIndexedDB: true,
+        $webkitStorageInfo: true,
+        $external: true
+    };
+    var hasAutomationEqualityBug = (function () {
+        /* globals window */
+        if (typeof window === 'undefined') {
+            return false;
+        }
+        for (var k in window) {
+            try {
+                if (!blacklistedKeys['$' + k] && owns(window, k) && window[k] !== null && typeof window[k] === 'object') {
+                    equalsConstructorPrototype(window[k]);
+                }
+            } catch (e) {
+                return true;
             }
         }
+        return false;
+    }());
+    var equalsConstructorPrototypeIfNotBuggy = function (object) {
+        if (typeof window === 'undefined' || !hasAutomationEqualityBug) {
+            return equalsConstructorPrototype(object);
+        }
+        try {
+            return equalsConstructorPrototype(object);
+        } catch (e) {
+            return false;
+        }
+    };
+    var dontEnums = [
+        'toString',
+        'toLocaleString',
+        'valueOf',
+        'hasOwnProperty',
+        'isPrototypeOf',
+        'propertyIsEnumerable',
+        'constructor'
+    ];
+    var dontEnumsLength = dontEnums.length;
+
+    // taken directly from https://github.com/ljharb/is-arguments/blob/master/index.js
+    // can be replaced with require('is-arguments') if we ever use a build process instead
+    var isStandardArguments = function isArguments(value) {
+        return toStr(value) === '[object Arguments]';
+    };
+    var isLegacyArguments = function isArguments(value) {
+        return value !== null &&
+            typeof value === 'object' &&
+            typeof value.length === 'number' &&
+            value.length >= 0 &&
+            !isArray(value) &&
+            isCallable(value.callee);
+    };
+    var isArguments = isStandardArguments(arguments) ? isStandardArguments : isLegacyArguments;
 
-        if (!isArgs) {
-            for (var name in object) {
-                if (!(skipProto && name === 'prototype') && owns(object, name)) {
-                    pushCall(theKeys, $String(name));
+    defineProperties($Object, {
+        keys: function keys(object) {
+            var isFn = isCallable(object);
+            var isArgs = isArguments(object);
+            var isObject = object !== null && typeof object === 'object';
+            var isStr = isObject && isString(object);
+
+            if (!isObject && !isFn && !isArgs) {
+                throw new TypeError('Object.keys called on a non-object');
+            }
+
+            var theKeys = [];
+            var skipProto = hasProtoEnumBug && isFn;
+            if ((isStr && hasStringEnumBug) || isArgs) {
+                for (var i = 0; i < object.length; ++i) {
+                    pushCall(theKeys, $String(i));
                 }
             }
-        }
 
-        if (hasDontEnumBug) {
-            var skipConstructor = equalsConstructorPrototypeIfNotBuggy(object);
-            for (var j = 0; j < dontEnumsLength; j++) {
-                var dontEnum = dontEnums[j];
-                if (!(skipConstructor && dontEnum === 'constructor') && owns(object, dontEnum)) {
-                    pushCall(theKeys, dontEnum);
+            if (!isArgs) {
+                for (var name in object) {
+                    if (!(skipProto && name === 'prototype') && owns(object, name)) {
+                        pushCall(theKeys, $String(name));
+                    }
                 }
             }
-        }
-        return theKeys;
-    }
-});
-
-var keysWorksWithArguments = $Object.keys && (function () {
-    // Safari 5.0 bug
-    return $Object.keys(arguments).length === 2;
-}(1, 2));
-var keysHasArgumentsLengthBug = $Object.keys && (function () {
-    var argKeys = $Object.keys(arguments);
-    return arguments.length !== 1 || argKeys.length !== 1 || argKeys[0] !== 1;
-}(1));
-var originalKeys = $Object.keys;
-defineProperties($Object, {
-    keys: function keys(object) {
-        if (isArguments(object)) {
-            return originalKeys(arraySlice(object));
-        } else {
-            return originalKeys(object);
-        }
-    }
-}, !keysWorksWithArguments || keysHasArgumentsLengthBug);
-
-//
-// Date
-// ====
-//
-
-var hasNegativeMonthYearBug = new Date(-3509827329600292).getUTCMonth() !== 0;
-var aNegativeTestDate = new Date(-1509842289600292);
-var aPositiveTestDate = new Date(1449662400000);
-var hasToUTCStringFormatBug = aNegativeTestDate.toUTCString() !== 'Mon, 01 Jan -45875 11:59:59 GMT';
-var hasToDateStringFormatBug;
-var hasToStringFormatBug;
-var timeZoneOffset = aNegativeTestDate.getTimezoneOffset();
-if (timeZoneOffset < -720) {
-    hasToDateStringFormatBug = aNegativeTestDate.toDateString() !== 'Tue Jan 02 -45875';
-    hasToStringFormatBug = !(/^Thu Dec 10 2015 \d\d:\d\d:\d\d GMT[-\+]\d\d\d\d(?: |$)/).test(aPositiveTestDate.toString());
-} else {
-    hasToDateStringFormatBug = aNegativeTestDate.toDateString() !== 'Mon Jan 01 -45875';
-    hasToStringFormatBug = !(/^Wed Dec 09 2015 \d\d:\d\d:\d\d GMT[-\+]\d\d\d\d(?: |$)/).test(aPositiveTestDate.toString());
-}
-
-var originalGetFullYear = call.bind(Date.prototype.getFullYear);
-var originalGetMonth = call.bind(Date.prototype.getMonth);
-var originalGetDate = call.bind(Date.prototype.getDate);
-var originalGetUTCFullYear = call.bind(Date.prototype.getUTCFullYear);
-var originalGetUTCMonth = call.bind(Date.prototype.getUTCMonth);
-var originalGetUTCDate = call.bind(Date.prototype.getUTCDate);
-var originalGetUTCDay = call.bind(Date.prototype.getUTCDay);
-var originalGetUTCHours = call.bind(Date.prototype.getUTCHours);
-var originalGetUTCMinutes = call.bind(Date.prototype.getUTCMinutes);
-var originalGetUTCSeconds = call.bind(Date.prototype.getUTCSeconds);
-var originalGetUTCMilliseconds = call.bind(Date.prototype.getUTCMilliseconds);
-var dayName = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
-var monthName = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
-var daysInMonth = function daysInMonth(month, year) {
-    return originalGetDate(new Date(year, month, 0));
-};
-
-defineProperties(Date.prototype, {
-    getFullYear: function getFullYear() {
-        if (!this || !(this instanceof Date)) {
-            throw new TypeError('this is not a Date object.');
-        }
-        var year = originalGetFullYear(this);
-        if (year < 0 && originalGetMonth(this) > 11) {
-            return year + 1;
-        }
-        return year;
-    },
-    getMonth: function getMonth() {
-        if (!this || !(this instanceof Date)) {
-            throw new TypeError('this is not a Date object.');
-        }
-        var year = originalGetFullYear(this);
-        var month = originalGetMonth(this);
-        if (year < 0 && month > 11) {
-            return 0;
-        }
-        return month;
-    },
-    getDate: function getDate() {
-        if (!this || !(this instanceof Date)) {
-            throw new TypeError('this is not a Date object.');
-        }
-        var year = originalGetFullYear(this);
-        var month = originalGetMonth(this);
-        var date = originalGetDate(this);
-        if (year < 0 && month > 11) {
-            if (month === 12) {
-                return date;
+
+            if (hasDontEnumBug) {
+                var skipConstructor = equalsConstructorPrototypeIfNotBuggy(object);
+                for (var j = 0; j < dontEnumsLength; j++) {
+                    var dontEnum = dontEnums[j];
+                    if (!(skipConstructor && dontEnum === 'constructor') && owns(object, dontEnum)) {
+                        pushCall(theKeys, dontEnum);
+                    }
+                }
             }
-            var days = daysInMonth(0, year + 1);
-            return (days - date) + 1;
+            return theKeys;
         }
-        return date;
-    },
-    getUTCFullYear: function getUTCFullYear() {
-        if (!this || !(this instanceof Date)) {
-            throw new TypeError('this is not a Date object.');
-        }
-        var year = originalGetUTCFullYear(this);
-        if (year < 0 && originalGetUTCMonth(this) > 11) {
-            return year + 1;
-        }
-        return year;
-    },
-    getUTCMonth: function getUTCMonth() {
-        if (!this || !(this instanceof Date)) {
-            throw new TypeError('this is not a Date object.');
-        }
-        var year = originalGetUTCFullYear(this);
-        var month = originalGetUTCMonth(this);
-        if (year < 0 && month > 11) {
-            return 0;
-        }
-        return month;
-    },
-    getUTCDate: function getUTCDate() {
-        if (!this || !(this instanceof Date)) {
-            throw new TypeError('this is not a Date object.');
-        }
-        var year = originalGetUTCFullYear(this);
-        var month = originalGetUTCMonth(this);
-        var date = originalGetUTCDate(this);
-        if (year < 0 && month > 11) {
-            if (month === 12) {
-                return date;
+    });
+
+    var keysWorksWithArguments = $Object.keys && (function () {
+        // Safari 5.0 bug
+        return $Object.keys(arguments).length === 2;
+    }(1, 2));
+    var keysHasArgumentsLengthBug = $Object.keys && (function () {
+        var argKeys = $Object.keys(arguments);
+        return arguments.length !== 1 || argKeys.length !== 1 || argKeys[0] !== 1;
+    }(1));
+    var originalKeys = $Object.keys;
+    defineProperties($Object, {
+        keys: function keys(object) {
+            if (isArguments(object)) {
+                return originalKeys(arraySlice(object));
+            } else {
+                return originalKeys(object);
             }
-            var days = daysInMonth(0, year + 1);
-            return (days - date) + 1;
         }
-        return date;
+    }, !keysWorksWithArguments || keysHasArgumentsLengthBug);
+
+    //
+    // Date
+    // ====
+    //
+
+    var hasNegativeMonthYearBug = new Date(-3509827329600292).getUTCMonth() !== 0;
+    var aNegativeTestDate = new Date(-1509842289600292);
+    var aPositiveTestDate = new Date(1449662400000);
+    var hasToUTCStringFormatBug = aNegativeTestDate.toUTCString() !== 'Mon, 01 Jan -45875 11:59:59 GMT';
+    var hasToDateStringFormatBug;
+    var hasToStringFormatBug;
+    var timeZoneOffset = aNegativeTestDate.getTimezoneOffset();
+    if (timeZoneOffset < -720) {
+        hasToDateStringFormatBug = aNegativeTestDate.toDateString() !== 'Tue Jan 02 -45875';
+        hasToStringFormatBug = !(/^Thu Dec 10 2015 \d\d:\d\d:\d\d GMT[-\+]\d\d\d\d(?: |$)/).test(aPositiveTestDate.toString());
+    } else {
+        hasToDateStringFormatBug = aNegativeTestDate.toDateString() !== 'Mon Jan 01 -45875';
+        hasToStringFormatBug = !(/^Wed Dec 09 2015 \d\d:\d\d:\d\d GMT[-\+]\d\d\d\d(?: |$)/).test(aPositiveTestDate.toString());
     }
-}, hasNegativeMonthYearBug);
 
-defineProperties(Date.prototype, {
-    toUTCString: function toUTCString() {
-        if (!this || !(this instanceof Date)) {
-            throw new TypeError('this is not a Date object.');
+    var originalGetFullYear = call.bind(Date.prototype.getFullYear);
+    var originalGetMonth = call.bind(Date.prototype.getMonth);
+    var originalGetDate = call.bind(Date.prototype.getDate);
+    var originalGetUTCFullYear = call.bind(Date.prototype.getUTCFullYear);
+    var originalGetUTCMonth = call.bind(Date.prototype.getUTCMonth);
+    var originalGetUTCDate = call.bind(Date.prototype.getUTCDate);
+    var originalGetUTCDay = call.bind(Date.prototype.getUTCDay);
+    var originalGetUTCHours = call.bind(Date.prototype.getUTCHours);
+    var originalGetUTCMinutes = call.bind(Date.prototype.getUTCMinutes);
+    var originalGetUTCSeconds = call.bind(Date.prototype.getUTCSeconds);
+    var originalGetUTCMilliseconds = call.bind(Date.prototype.getUTCMilliseconds);
+    var dayName = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
+    var monthName = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
+    var daysInMonth = function daysInMonth(month, year) {
+        return originalGetDate(new Date(year, month, 0));
+    };
+
+    defineProperties(Date.prototype, {
+        getFullYear: function getFullYear() {
+            if (!this || !(this instanceof Date)) {
+                throw new TypeError('this is not a Date object.');
+            }
+            var year = originalGetFullYear(this);
+            if (year < 0 && originalGetMonth(this) > 11) {
+                return year + 1;
+            }
+            return year;
+        },
+        getMonth: function getMonth() {
+            if (!this || !(this instanceof Date)) {
+                throw new TypeError('this is not a Date object.');
+            }
+            var year = originalGetFullYear(this);
+            var month = originalGetMonth(this);
+            if (year < 0 && month > 11) {
+                return 0;
+            }
+            return month;
+        },
+        getDate: function getDate() {
+            if (!this || !(this instanceof Date)) {
+                throw new TypeError('this is not a Date object.');
+            }
+            var year = originalGetFullYear(this);
+            var month = originalGetMonth(this);
+            var date = originalGetDate(this);
+            if (year < 0 && month > 11) {
+                if (month === 12) {
+                    return date;
+                }
+                var days = daysInMonth(0, year + 1);
+                return (days - date) + 1;
+            }
+            return date;
+        },
+        getUTCFullYear: function getUTCFullYear() {
+            if (!this || !(this instanceof Date)) {
+                throw new TypeError('this is not a Date object.');
+            }
+            var year = originalGetUTCFullYear(this);
+            if (year < 0 && originalGetUTCMonth(this) > 11) {
+                return year + 1;
+            }
+            return year;
+        },
+        getUTCMonth: function getUTCMonth() {
+            if (!this || !(this instanceof Date)) {
+                throw new TypeError('this is not a Date object.');
+            }
+            var year = originalGetUTCFullYear(this);
+            var month = originalGetUTCMonth(this);
+            if (year < 0 && month > 11) {
+                return 0;
+            }
+            return month;
+        },
+        getUTCDate: function getUTCDate() {
+            if (!this || !(this instanceof Date)) {
+                throw new TypeError('this is not a Date object.');
+            }
+            var year = originalGetUTCFullYear(this);
+            var month = originalGetUTCMonth(this);
+            var date = originalGetUTCDate(this);
+            if (year < 0 && month > 11) {
+                if (month === 12) {
+                    return date;
+                }
+                var days = daysInMonth(0, year + 1);
+                return (days - date) + 1;
+            }
+            return date;
         }
-        var day = originalGetUTCDay(this);
-        var date = originalGetUTCDate(this);
-        var month = originalGetUTCMonth(this);
-        var year = originalGetUTCFullYear(this);
-        var hour = originalGetUTCHours(this);
-        var minute = originalGetUTCMinutes(this);
-        var second = originalGetUTCSeconds(this);
-        return dayName[day] + ', ' +
-            (date < 10 ? '0' + date : date) + ' ' +
-            monthName[month] + ' ' +
-            year + ' ' +
-            (hour < 10 ? '0' + hour : hour) + ':' +
-            (minute < 10 ? '0' + minute : minute) + ':' +
-            (second < 10 ? '0' + second : second) + ' GMT';
-    }
-}, hasNegativeMonthYearBug || hasToUTCStringFormatBug);
+    }, hasNegativeMonthYearBug);
 
-// Opera 12 has `,`
-defineProperties(Date.prototype, {
-    toDateString: function toDateString() {
-        if (!this || !(this instanceof Date)) {
-            throw new TypeError('this is not a Date object.');
+    defineProperties(Date.prototype, {
+        toUTCString: function toUTCString() {
+            if (!this || !(this instanceof Date)) {
+                throw new TypeError('this is not a Date object.');
+            }
+            var day = originalGetUTCDay(this);
+            var date = originalGetUTCDate(this);
+            var month = originalGetUTCMonth(this);
+            var year = originalGetUTCFullYear(this);
+            var hour = originalGetUTCHours(this);
+            var minute = originalGetUTCMinutes(this);
+            var second = originalGetUTCSeconds(this);
+            return dayName[day] + ', ' +
+                (date < 10 ? '0' + date : date) + ' ' +
+                monthName[month] + ' ' +
+                year + ' ' +
+                (hour < 10 ? '0' + hour : hour) + ':' +
+                (minute < 10 ? '0' + minute : minute) + ':' +
+                (second < 10 ? '0' + second : second) + ' GMT';
+        }
+    }, hasNegativeMonthYearBug || hasToUTCStringFormatBug);
+
+    // Opera 12 has `,`
+    defineProperties(Date.prototype, {
+        toDateString: function toDateString() {
+            if (!this || !(this instanceof Date)) {
+                throw new TypeError('this is not a Date object.');
+            }
+            var day = this.getDay();
+            var date = this.getDate();
+            var month = this.getMonth();
+            var year = this.getFullYear();
+            return dayName[day] + ' ' +
+                monthName[month] + ' ' +
+                (date < 10 ? '0' + date : date) + ' ' +
+                year;
         }
-        var day = this.getDay();
-        var date = this.getDate();
-        var month = this.getMonth();
-        var year = this.getFullYear();
-        return dayName[day] + ' ' +
-            monthName[month] + ' ' +
-            (date < 10 ? '0' + date : date) + ' ' +
-            year;
-    }
-}, hasNegativeMonthYearBug || hasToDateStringFormatBug);
+    }, hasNegativeMonthYearBug || hasToDateStringFormatBug);
 
-// can't use defineProperties here because of toString enumeration issue in IE <= 8
-if (hasNegativeMonthYearBug || hasToStringFormatBug) {
-    Date.prototype.toString = function toString() {
-        if (!this || !(this instanceof Date)) {
-            throw new TypeError('this is not a Date object.');
+    // can't use defineProperties here because of toString enumeration issue in IE <= 8
+    if (hasNegativeMonthYearBug || hasToStringFormatBug) {
+        Date.prototype.toString = function toString() {
+            if (!this || !(this instanceof Date)) {
+                throw new TypeError('this is not a Date object.');
+            }
+            var day = this.getDay();
+            var date = this.getDate();
+            var month = this.getMonth();
+            var year = this.getFullYear();
+            var hour = this.getHours();
+            var minute = this.getMinutes();
+            var second = this.getSeconds();
+            var timezoneOffset = this.getTimezoneOffset();
+            var hoursOffset = Math.floor(Math.abs(timezoneOffset) / 60);
+            var minutesOffset = Math.floor(Math.abs(timezoneOffset) % 60);
+            return dayName[day] + ' ' +
+                monthName[month] + ' ' +
+                (date < 10 ? '0' + date : date) + ' ' +
+                year + ' ' +
+                (hour < 10 ? '0' + hour : hour) + ':' +
+                (minute < 10 ? '0' + minute : minute) + ':' +
+                (second < 10 ? '0' + second : second) + ' GMT' +
+                (timezoneOffset > 0 ? '-' : '+') +
+                (hoursOffset < 10 ? '0' + hoursOffset : hoursOffset) +
+                (minutesOffset < 10 ? '0' + minutesOffset : minutesOffset);
+        };
+        if (supportsDescriptors) {
+            $Object.defineProperty(Date.prototype, 'toString', {
+                configurable: true,
+                enumerable: false,
+                writable: true
+            });
         }
-        var day = this.getDay();
-        var date = this.getDate();
-        var month = this.getMonth();
-        var year = this.getFullYear();
-        var hour = this.getHours();
-        var minute = this.getMinutes();
-        var second = this.getSeconds();
-        var timezoneOffset = this.getTimezoneOffset();
-        var hoursOffset = Math.floor(Math.abs(timezoneOffset) / 60);
-        var minutesOffset = Math.floor(Math.abs(timezoneOffset) % 60);
-        return dayName[day] + ' ' +
-            monthName[month] + ' ' +
-            (date < 10 ? '0' + date : date) + ' ' +
-            year + ' ' +
-            (hour < 10 ? '0' + hour : hour) + ':' +
-            (minute < 10 ? '0' + minute : minute) + ':' +
-            (second < 10 ? '0' + second : second) + ' GMT' +
-            (timezoneOffset > 0 ? '-' : '+') +
-            (hoursOffset < 10 ? '0' + hoursOffset : hoursOffset) +
-            (minutesOffset < 10 ? '0' + minutesOffset : minutesOffset);
-    };
-    if (supportsDescriptors) {
-        $Object.defineProperty(Date.prototype, 'toString', {
-            configurable: true,
-            enumerable: false,
-            writable: true
-        });
     }
-}
-
-// ES5 15.9.5.43
-// http://es5.github.com/#x15.9.5.43
-// This function returns a String value represent the instance in time
-// represented by this Date object. The format of the String is the Date Time
-// string format defined in 15.9.1.15. All fields are present in the String.
-// The time zone is always UTC, denoted by the suffix Z. If the time value of
-// this object is not a finite Number a RangeError exception is thrown.
-var negativeDate = -62198755200000;
-var negativeYearString = '-000001';
-var hasNegativeDateBug = Date.prototype.toISOString && new Date(negativeDate).toISOString().indexOf(negativeYearString) === -1;
-var hasSafari51DateBug = Date.prototype.toISOString && new Date(-1).toISOString() !== '1969-12-31T23:59:59.999Z';
-
-var getTime = call.bind(Date.prototype.getTime);
-
-defineProperties(Date.prototype, {
-    toISOString: function toISOString() {
-        if (!isFinite(this) || !isFinite(getTime(this))) {
-            // Adope Photoshop requires the second check.
-            throw new RangeError('Date.prototype.toISOString called on non-finite value.');
-        }
 
-        var year = originalGetUTCFullYear(this);
+    // ES5 15.9.5.43
+    // http://es5.github.com/#x15.9.5.43
+    // This function returns a String value represent the instance in time
+    // represented by this Date object. The format of the String is the Date Time
+    // string format defined in 15.9.1.15. All fields are present in the String.
+    // The time zone is always UTC, denoted by the suffix Z. If the time value of
+    // this object is not a finite Number a RangeError exception is thrown.
+    var negativeDate = -62198755200000;
+    var negativeYearString = '-000001';
+    var hasNegativeDateBug = Date.prototype.toISOString && new Date(negativeDate).toISOString().indexOf(negativeYearString) === -1;
+    var hasSafari51DateBug = Date.prototype.toISOString && new Date(-1).toISOString() !== '1969-12-31T23:59:59.999Z';
+
+    var getTime = call.bind(Date.prototype.getTime);
+
+    defineProperties(Date.prototype, {
+        toISOString: function toISOString() {
+            if (!isFinite(this) || !isFinite(getTime(this))) {
+                // Adope Photoshop requires the second check.
+                throw new RangeError('Date.prototype.toISOString called on non-finite value.');
+            }
 
-        var month = originalGetUTCMonth(this);
-        // see https://github.com/es-shims/es5-shim/issues/111
-        year += Math.floor(month / 12);
-        month = (month % 12 + 12) % 12;
+            var year = originalGetUTCFullYear(this);
 
-        // the date time string format is specified in 15.9.1.15.
-        var result = [month + 1, originalGetUTCDate(this), originalGetUTCHours(this), originalGetUTCMinutes(this), originalGetUTCSeconds(this)];
-        year = (
-            (year < 0 ? '-' : (year > 9999 ? '+' : '')) +
-            strSlice('00000' + Math.abs(year), (0 <= year && year <= 9999) ? -4 : -6)
-        );
+            var month = originalGetUTCMonth(this);
+            // see https://github.com/es-shims/es5-shim/issues/111
+            year += Math.floor(month / 12);
+            month = (month % 12 + 12) % 12;
 
-        for (var i = 0; i < result.length; ++i) {
-          // pad months, days, hours, minutes, and seconds to have two digits.
-          result[i] = strSlice('00' + result[i], -2);
-        }
-        // pad milliseconds to have three digits.
-        return (
-            year + '-' + arraySlice(result, 0, 2).join('-') +
-            'T' + arraySlice(result, 2).join(':') + '.' +
-            strSlice('000' + originalGetUTCMilliseconds(this), -3) + 'Z'
-        );
-    }
-}, hasNegativeDateBug || hasSafari51DateBug);
+            // the date time string format is specified in 15.9.1.15.
+            var result = [month + 1, originalGetUTCDate(this), originalGetUTCHours(this), originalGetUTCMinutes(this), originalGetUTCSeconds(this)];
+            year = (
+                (year < 0 ? '-' : (year > 9999 ? '+' : '')) +
+                strSlice('00000' + Math.abs(year), (0 <= year && year <= 9999) ? -4 : -6)
+            );
 
-// ES5 15.9.5.44
-// http://es5.github.com/#x15.9.5.44
-// This function provides a String representation of a Date object for use by
-// JSON.stringify (15.12.3).
-var dateToJSONIsSupported = (function () {
-    try {
-        return Date.prototype.toJSON &&
-            new Date(NaN).toJSON() === null &&
-            new Date(negativeDate).toJSON().indexOf(negativeYearString) !== -1 &&
-            Date.prototype.toJSON.call({ // generic
-                toISOString: function () { return true; }
-            });
-    } catch (e) {
-        return false;
-    }
-}());
-if (!dateToJSONIsSupported) {
-    Date.prototype.toJSON = function toJSON(key) {
-        // When the toJSON method is called with argument key, the following
-        // steps are taken:
-
-        // 1.  Let O be the result of calling ToObject, giving it the this
-        // value as its argument.
-        // 2. Let tv be ES.ToPrimitive(O, hint Number).
-        var O = $Object(this);
-        var tv = ES.ToPrimitive(O);
-        // 3. If tv is a Number and is not finite, return null.
-        if (typeof tv === 'number' && !isFinite(tv)) {
-            return null;
+            for (var i = 0; i < result.length; ++i) {
+                // pad months, days, hours, minutes, and seconds to have two digits.
+                result[i] = strSlice('00' + result[i], -2);
+            }
+            // pad milliseconds to have three digits.
+            return (
+                year + '-' + arraySlice(result, 0, 2).join('-') +
+                'T' + arraySlice(result, 2).join(':') + '.' +
+                strSlice('000' + originalGetUTCMilliseconds(this), -3) + 'Z'
+            );
         }
-        // 4. Let toISO be the result of calling the [[Get]] internal method of
-        // O with argument "toISOString".
-        var toISO = O.toISOString;
-        // 5. If IsCallable(toISO) is false, throw a TypeError exception.
-        if (!isCallable(toISO)) {
-            throw new TypeError('toISOString property is not callable');
+    }, hasNegativeDateBug || hasSafari51DateBug);
+
+    // ES5 15.9.5.44
+    // http://es5.github.com/#x15.9.5.44
+    // This function provides a String representation of a Date object for use by
+    // JSON.stringify (15.12.3).
+    var dateToJSONIsSupported = (function () {
+        try {
+            return Date.prototype.toJSON &&
+                new Date(NaN).toJSON() === null &&
+                new Date(negativeDate).toJSON().indexOf(negativeYearString) !== -1 &&
+                Date.prototype.toJSON.call({ // generic
+                    toISOString: function () { return true; }
+                });
+        } catch (e) {
+            return false;
         }
-        // 6. Return the result of calling the [[Call]] internal method of
-        //  toISO with O as the this value and an empty argument list.
-        return toISO.call(O);
-
-        // NOTE 1 The argument is ignored.
-
-        // NOTE 2 The toJSON function is intentionally generic; it does not
-        // require that its this value be a Date object. Therefore, it can be
-        // transferred to other kinds of objects for use as a method. However,
-        // it does require that any such object have a toISOString method. An
-        // object is free to use the argument key to filter its
-        // stringification.
-    };
-}
-
-// ES5 15.9.4.2
-// http://es5.github.com/#x15.9.4.2
-// based on work shared by Daniel Friesen (dantman)
-// http://gist.github.com/303249
-var supportsExtendedYears = Date.parse('+033658-09-27T01:46:40.000Z') === 1e15;
-var acceptsInvalidDates = !isNaN(Date.parse('2012-04-04T24:00:00.500Z')) || !isNaN(Date.parse('2012-11-31T23:59:59.000Z')) || !isNaN(Date.parse('2012-12-31T23:59:60.000Z'));
-var doesNotParseY2KNewYear = isNaN(Date.parse('2000-01-01T00:00:00.000Z'));
-if (doesNotParseY2KNewYear || acceptsInvalidDates || !supportsExtendedYears) {
-    // XXX global assignment won't work in embeddings that use
-    // an alternate object for the context.
-    /* global Date: true */
-    /* eslint-disable no-undef */
-    var maxSafeUnsigned32Bit = Math.pow(2, 31) - 1;
-    var hasSafariSignedIntBug = isActualNaN(new Date(1970, 0, 1, 0, 0, 0, maxSafeUnsigned32Bit + 1).getTime());
-    /* eslint-disable no-implicit-globals */
-    Date = (function (NativeDate) {
-    /* eslint-enable no-implicit-globals */
-    /* eslint-enable no-undef */
-        // Date.length === 7
-        var DateShim = function Date(Y, M, D, h, m, s, ms) {
-            var length = arguments.length;
-            var date;
-            if (this instanceof NativeDate) {
-                var seconds = s;
-                var millis = ms;
-                if (hasSafariSignedIntBug && length >= 7 && ms > maxSafeUnsigned32Bit) {
+    }());
+    if (!dateToJSONIsSupported) {
+        Date.prototype.toJSON = function toJSON(key) {
+            // When the toJSON method is called with argument key, the following
+            // steps are taken:
+
+            // 1.  Let O be the result of calling ToObject, giving it the this
+            // value as its argument.
+            // 2. Let tv be ES.ToPrimitive(O, hint Number).
+            var O = $Object(this);
+            var tv = ES.ToPrimitive(O);
+            // 3. If tv is a Number and is not finite, return null.
+            if (typeof tv === 'number' && !isFinite(tv)) {
+                return null;
+            }
+            // 4. Let toISO be the result of calling the [[Get]] internal method of
+            // O with argument "toISOString".
+            var toISO = O.toISOString;
+            // 5. If IsCallable(toISO) is false, throw a TypeError exception.
+            if (!isCallable(toISO)) {
+                throw new TypeError('toISOString property is not callable');
+            }
+            // 6. Return the result of calling the [[Call]] internal method of
+            //  toISO with O as the this value and an empty argument list.
+            return toISO.call(O);
+
+            // NOTE 1 The argument is ignored.
+
+            // NOTE 2 The toJSON function is intentionally generic; it does not
+            // require that its this value be a Date object. Therefore, it can be
+            // transferred to other kinds of objects for use as a method. However,
+            // it does require that any such object have a toISOString method. An
+            // object is free to use the argument key to filter its
+            // stringification.
+        };
+    }
+
+    // ES5 15.9.4.2
+    // http://es5.github.com/#x15.9.4.2
+    // based on work shared by Daniel Friesen (dantman)
+    // http://gist.github.com/303249
+    var supportsExtendedYears = Date.parse('+033658-09-27T01:46:40.000Z') === 1e15;
+    var acceptsInvalidDates = !isNaN(Date.parse('2012-04-04T24:00:00.500Z')) || !isNaN(Date.parse('2012-11-31T23:59:59.000Z')) || !isNaN(Date.parse('2012-12-31T23:59:60.000Z'));
+    var doesNotParseY2KNewYear = isNaN(Date.parse('2000-01-01T00:00:00.000Z'));
+    if (doesNotParseY2KNewYear || acceptsInvalidDates || !supportsExtendedYears) {
+        // XXX global assignment won't work in embeddings that use
+        // an alternate object for the context.
+        /* global Date: true */
+        /* eslint-disable no-undef */
+        var maxSafeUnsigned32Bit = Math.pow(2, 31) - 1;
+        var hasSafariSignedIntBug = isActualNaN(new Date(1970, 0, 1, 0, 0, 0, maxSafeUnsigned32Bit + 1).getTime());
+        /* eslint-disable no-implicit-globals */
+        Date = (function (NativeDate) {
+        /* eslint-enable no-implicit-globals */
+        /* eslint-enable no-undef */
+            // Date.length === 7
+            var DateShim = function Date(Y, M, D, h, m, s, ms) {
+                var length = arguments.length;
+                var date;
+                if (this instanceof NativeDate) {
+                    var seconds = s;
+                    var millis = ms;
+                    if (hasSafariSignedIntBug && length >= 7 && ms > maxSafeUnsigned32Bit) {
+                        // work around a Safari 8/9 bug where it treats the seconds as signed
+                        var msToShift = Math.floor(ms / maxSafeUnsigned32Bit) * maxSafeUnsigned32Bit;
+                        var sToShift = Math.floor(msToShift / 1e3);
+                        seconds += sToShift;
+                        millis -= sToShift * 1e3;
+                    }
+                    date = length === 1 && $String(Y) === Y ? // isString(Y)
+                        // We explicitly pass it through parse:
+                        new NativeDate(DateShim.parse(Y)) :
+                        // We have to manually make calls depending on argument
+                        // length here
+                        length >= 7 ? new NativeDate(Y, M, D, h, m, seconds, millis) :
+                        length >= 6 ? new NativeDate(Y, M, D, h, m, seconds) :
+                        length >= 5 ? new NativeDate(Y, M, D, h, m) :
+                        length >= 4 ? new NativeDate(Y, M, D, h) :
+                        length >= 3 ? new NativeDate(Y, M, D) :
+                        length >= 2 ? new NativeDate(Y, M) :
+                        length >= 1 ? new NativeDate(Y instanceof NativeDate ? +Y : Y) :
+                                      new NativeDate();
+                } else {
+                    date = NativeDate.apply(this, arguments);
+                }
+                if (!isPrimitive(date)) {
+                    // Prevent mixups with unfixed Date object
+                    defineProperties(date, { constructor: DateShim }, true);
+                }
+                return date;
+            };
+
+            // 15.9.1.15 Date Time String Format.
+            var isoDateExpression = new RegExp('^' +
+                '(\\d{4}|[+-]\\d{6})' + // four-digit year capture or sign +
+                                          // 6-digit extended year
+                '(?:-(\\d{2})' + // optional month capture
+                '(?:-(\\d{2})' + // optional day capture
+                '(?:' + // capture hours:minutes:seconds.milliseconds
+                    'T(\\d{2})' + // hours capture
+                    ':(\\d{2})' + // minutes capture
+                    '(?:' + // optional :seconds.milliseconds
+                        ':(\\d{2})' + // seconds capture
+                        '(?:(\\.\\d{1,}))?' + // milliseconds capture
+                    ')?' +
+                '(' + // capture UTC offset component
+                    'Z|' + // UTC capture
+                    '(?:' + // offset specifier +/-hours:minutes
+                        '([-+])' + // sign capture
+                        '(\\d{2})' + // hours offset capture
+                        ':(\\d{2})' + // minutes offset capture
+                    ')' +
+                ')?)?)?)?' +
+            '$');
+
+            var months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365];
+
+            var dayFromMonth = function dayFromMonth(year, month) {
+                var t = month > 1 ? 1 : 0;
+                return (
+                    months[month] +
+                    Math.floor((year - 1969 + t) / 4) -
+                    Math.floor((year - 1901 + t) / 100) +
+                    Math.floor((year - 1601 + t) / 400) +
+                    365 * (year - 1970)
+                );
+            };
+
+            var toUTC = function toUTC(t) {
+                var s = 0;
+                var ms = t;
+                if (hasSafariSignedIntBug && ms > maxSafeUnsigned32Bit) {
                     // work around a Safari 8/9 bug where it treats the seconds as signed
                     var msToShift = Math.floor(ms / maxSafeUnsigned32Bit) * maxSafeUnsigned32Bit;
                     var sToShift = Math.floor(msToShift / 1e3);
-                    seconds += sToShift;
-                    millis -= sToShift * 1e3;
+                    s += sToShift;
+                    ms -= sToShift * 1e3;
+                }
+                return $Number(new NativeDate(1970, 0, 1, 0, 0, s, ms));
+            };
+
+            // Copy any custom methods a 3rd party library may have added
+            for (var key in NativeDate) {
+                if (owns(NativeDate, key)) {
+                    DateShim[key] = NativeDate[key];
                 }
-                date = length === 1 && $String(Y) === Y ? // isString(Y)
-                    // We explicitly pass it through parse:
-                    new NativeDate(DateShim.parse(Y)) :
-                    // We have to manually make calls depending on argument
-                    // length here
-                    length >= 7 ? new NativeDate(Y, M, D, h, m, seconds, millis) :
-                    length >= 6 ? new NativeDate(Y, M, D, h, m, seconds) :
-                    length >= 5 ? new NativeDate(Y, M, D, h, m) :
-                    length >= 4 ? new NativeDate(Y, M, D, h) :
-                    length >= 3 ? new NativeDate(Y, M, D) :
-                    length >= 2 ? new NativeDate(Y, M) :
-                    length >= 1 ? new NativeDate(Y instanceof NativeDate ? +Y : Y) :
-                                  new NativeDate();
-            } else {
-                date = NativeDate.apply(this, arguments);
-            }
-            if (!isPrimitive(date)) {
-              // Prevent mixups with unfixed Date object
-              defineProperties(date, { constructor: DateShim }, true);
             }
-            return date;
-        };
 
-        // 15.9.1.15 Date Time String Format.
-        var isoDateExpression = new RegExp('^' +
-            '(\\d{4}|[+-]\\d{6})' + // four-digit year capture or sign +
-                                      // 6-digit extended year
-            '(?:-(\\d{2})' + // optional month capture
-            '(?:-(\\d{2})' + // optional day capture
-            '(?:' + // capture hours:minutes:seconds.milliseconds
-                'T(\\d{2})' + // hours capture
-                ':(\\d{2})' + // minutes capture
-                '(?:' + // optional :seconds.milliseconds
-                    ':(\\d{2})' + // seconds capture
-                    '(?:(\\.\\d{1,}))?' + // milliseconds capture
-                ')?' +
-            '(' + // capture UTC offset component
-                'Z|' + // UTC capture
-                '(?:' + // offset specifier +/-hours:minutes
-                    '([-+])' + // sign capture
-                    '(\\d{2})' + // hours offset capture
-                    ':(\\d{2})' + // minutes offset capture
-                ')' +
-            ')?)?)?)?' +
-        '$');
-
-        var months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365];
-
-        var dayFromMonth = function dayFromMonth(year, month) {
-            var t = month > 1 ? 1 : 0;
-            return (
-                months[month] +
-                Math.floor((year - 1969 + t) / 4) -
-                Math.floor((year - 1901 + t) / 100) +
-                Math.floor((year - 1601 + t) / 400) +
-                365 * (year - 1970)
-            );
-        };
+            // Copy "native" methods explicitly; they may be non-enumerable
+            defineProperties(DateShim, {
+                now: NativeDate.now,
+                UTC: NativeDate.UTC
+            }, true);
+            DateShim.prototype = NativeDate.prototype;
+            defineProperties(DateShim.prototype, {
+                constructor: DateShim
+            }, true);
+
+            // Upgrade Date.parse to handle simplified ISO 8601 strings
+            var parseShim = function parse(string) {
+                var match = isoDateExpression.exec(string);
+                if (match) {
+                    // parse months, days, hours, minutes, seconds, and milliseconds
+                    // provide default values if necessary
+                    // parse the UTC offset component
+                    var year = $Number(match[1]),
+                        month = $Number(match[2] || 1) - 1,
+                        day = $Number(match[3] || 1) - 1,
+                        hour = $Number(match[4] || 0),
+                        minute = $Number(match[5] || 0),
+                        second = $Number(match[6] || 0),
+                        millisecond = Math.floor($Number(match[7] || 0) * 1000),
+                        // When time zone is missed, local offset should be used
+                        // (ES 5.1 bug)
+                        // see https://bugs.ecmascript.org/show_bug.cgi?id=112
+                        isLocalTime = Boolean(match[4] && !match[8]),
+                        signOffset = match[9] === '-' ? 1 : -1,
+                        hourOffset = $Number(match[10] || 0),
+                        minuteOffset = $Number(match[11] || 0),
+                        result;
+                    var hasMinutesOrSecondsOrMilliseconds = minute > 0 || second > 0 || millisecond > 0;
+                    if (
+                        hour < (hasMinutesOrSecondsOrMilliseconds ? 24 : 25) &&
+                        minute < 60 && second < 60 && millisecond < 1000 &&
+                        month > -1 && month < 12 && hourOffset < 24 &&
+                        minuteOffset < 60 && // detect invalid offsets
+                        day > -1 &&
+                        day < (dayFromMonth(year, month + 1) - dayFromMonth(year, month))
+                    ) {
+                        result = (
+                            (dayFromMonth(year, month) + day) * 24 +
+                            hour +
+                            hourOffset * signOffset
+                        ) * 60;
+                        result = (
+                            (result + minute + minuteOffset * signOffset) * 60 +
+                            second
+                        ) * 1000 + millisecond;
+                        if (isLocalTime) {
+                            result = toUTC(result);
+                        }
+                        if (-8.64e15 <= result && result <= 8.64e15) {
+                            return result;
+                        }
+                    }
+                    return NaN;
+                }
+                return NativeDate.parse.apply(this, arguments);
+            };
+            defineProperties(DateShim, { parse: parseShim });
+
+            return DateShim;
+        }(Date));
+        /* global Date: false */
+    }
 
-        var toUTC = function toUTC(t) {
-            var s = 0;
-            var ms = t;
-            if (hasSafariSignedIntBug && ms > maxSafeUnsigned32Bit) {
-                // work around a Safari 8/9 bug where it treats the seconds as signed
-                var msToShift = Math.floor(ms / maxSafeUnsigned32Bit) * maxSafeUnsigned32Bit;
-                var sToShift = Math.floor(msToShift / 1e3);
-                s += sToShift;
-                ms -= sToShift * 1e3;
-            }
-            return $Number(new NativeDate(1970, 0, 1, 0, 0, s, ms));
+    // ES5 15.9.4.4
+    // http://es5.github.com/#x15.9.4.4
+    if (!Date.now) {
+        Date.now = function now() {
+            return new Date().getTime();
         };
+    }
 
-        // Copy any custom methods a 3rd party library may have added
-        for (var key in NativeDate) {
-            if (owns(NativeDate, key)) {
-                DateShim[key] = NativeDate[key];
+    //
+    // Number
+    // ======
+    //
+
+    // ES5.1 15.7.4.5
+    // http://es5.github.com/#x15.7.4.5
+    var hasToFixedBugs = NumberPrototype.toFixed && (
+      (0.00008).toFixed(3) !== '0.000' ||
+      (0.9).toFixed(0) !== '1' ||
+      (1.255).toFixed(2) !== '1.25' ||
+      (1000000000000000128).toFixed(0) !== '1000000000000000128'
+    );
+
+    var toFixedHelpers = {
+        base: 1e7,
+        size: 6,
+        data: [0, 0, 0, 0, 0, 0],
+        multiply: function multiply(n, c) {
+            var i = -1;
+            var c2 = c;
+            while (++i < toFixedHelpers.size) {
+                c2 += n * toFixedHelpers.data[i];
+                toFixedHelpers.data[i] = c2 % toFixedHelpers.base;
+                c2 = Math.floor(c2 / toFixedHelpers.base);
             }
-        }
-
-        // Copy "native" methods explicitly; they may be non-enumerable
-        defineProperties(DateShim, {
-            now: NativeDate.now,
-            UTC: NativeDate.UTC
-        }, true);
-        DateShim.prototype = NativeDate.prototype;
-        defineProperties(DateShim.prototype, {
-            constructor: DateShim
-        }, true);
-
-        // Upgrade Date.parse to handle simplified ISO 8601 strings
-        var parseShim = function parse(string) {
-            var match = isoDateExpression.exec(string);
-            if (match) {
-                // parse months, days, hours, minutes, seconds, and milliseconds
-                // provide default values if necessary
-                // parse the UTC offset component
-                var year = $Number(match[1]),
-                    month = $Number(match[2] || 1) - 1,
-                    day = $Number(match[3] || 1) - 1,
-                    hour = $Number(match[4] || 0),
-                    minute = $Number(match[5] || 0),
-                    second = $Number(match[6] || 0),
-                    millisecond = Math.floor($Number(match[7] || 0) * 1000),
-                    // When time zone is missed, local offset should be used
-                    // (ES 5.1 bug)
-                    // see https://bugs.ecmascript.org/show_bug.cgi?id=112
-                    isLocalTime = Boolean(match[4] && !match[8]),
-                    signOffset = match[9] === '-' ? 1 : -1,
-                    hourOffset = $Number(match[10] || 0),
-                    minuteOffset = $Number(match[11] || 0),
-                    result;
-                var hasMinutesOrSecondsOrMilliseconds = minute > 0 || second > 0 || millisecond > 0;
-                if (
-                    hour < (hasMinutesOrSecondsOrMilliseconds ? 24 : 25) &&
-                    minute < 60 && second < 60 && millisecond < 1000 &&
-                    month > -1 && month < 12 && hourOffset < 24 &&
-                    minuteOffset < 60 && // detect invalid offsets
-                    day > -1 &&
-                    day < (dayFromMonth(year, month + 1) - dayFromMonth(year, month))
-                ) {
-                    result = (
-                        (dayFromMonth(year, month) + day) * 24 +
-                        hour +
-                        hourOffset * signOffset
-                    ) * 60;
-                    result = (
-                        (result + minute + minuteOffset * signOffset) * 60 +
-                        second
-                    ) * 1000 + millisecond;
-                    if (isLocalTime) {
-                        result = toUTC(result);
-                    }
-                    if (-8.64e15 <= result && result <= 8.64e15) {
-                        return result;
+        },
+        divide: function divide(n) {
+            var i = toFixedHelpers.size;
+            var c = 0;
+            while (--i >= 0) {
+                c += toFixedHelpers.data[i];
+                toFixedHelpers.data[i] = Math.floor(c / n);
+                c = (c % n) * toFixedHelpers.base;
+            }
+        },
+        numToString: function numToString() {
+            var i = toFixedHelpers.size;
+            var s = '';
+            while (--i >= 0) {
+                if (s !== '' || i === 0 || toFixedHelpers.data[i] !== 0) {
+                    var t = $String(toFixedHelpers.data[i]);
+                    if (s === '') {
+                        s = t;
+                    } else {
+                        s += strSlice('0000000', 0, 7 - t.length) + t;
                     }
                 }
-                return NaN;
             }
-            return NativeDate.parse.apply(this, arguments);
-        };
-        defineProperties(DateShim, { parse: parseShim });
-
-        return DateShim;
-    }(Date));
-    /* global Date: false */
-}
-
-// ES5 15.9.4.4
-// http://es5.github.com/#x15.9.4.4
-if (!Date.now) {
-    Date.now = function now() {
-        return new Date().getTime();
+            return s;
+        },
+        pow: function pow(x, n, acc) {
+            return (n === 0 ? acc : (n % 2 === 1 ? pow(x, n - 1, acc * x) : pow(x * x, n / 2, acc)));
+        },
+        log: function log(x) {
+            var n = 0;
+            var x2 = x;
+            while (x2 >= 4096) {
+                n += 12;
+                x2 /= 4096;
+            }
+            while (x2 >= 2) {
+                n += 1;
+                x2 /= 2;
+            }
+            return n;
+        }
     };
-}
-
-//
-// Number
-// ======
-//
-
-// ES5.1 15.7.4.5
-// http://es5.github.com/#x15.7.4.5
-var hasToFixedBugs = NumberPrototype.toFixed && (
-  (0.00008).toFixed(3) !== '0.000' ||
-  (0.9).toFixed(0) !== '1' ||
-  (1.255).toFixed(2) !== '1.25' ||
-  (1000000000000000128).toFixed(0) !== '1000000000000000128'
-);
-
-var toFixedHelpers = {
-  base: 1e7,
-  size: 6,
-  data: [0, 0, 0, 0, 0, 0],
-  multiply: function multiply(n, c) {
-      var i = -1;
-      var c2 = c;
-      while (++i < toFixedHelpers.size) {
-          c2 += n * toFixedHelpers.data[i];
-          toFixedHelpers.data[i] = c2 % toFixedHelpers.base;
-          c2 = Math.floor(c2 / toFixedHelpers.base);
-      }
-  },
-  divide: function divide(n) {
-      var i = toFixedHelpers.size;
-      var c = 0;
-      while (--i >= 0) {
-          c += toFixedHelpers.data[i];
-          toFixedHelpers.data[i] = Math.floor(c / n);
-          c = (c % n) * toFixedHelpers.base;
-      }
-  },
-  numToString: function numToString() {
-      var i = toFixedHelpers.size;
-      var s = '';
-      while (--i >= 0) {
-          if (s !== '' || i === 0 || toFixedHelpers.data[i] !== 0) {
-              var t = $String(toFixedHelpers.data[i]);
-              if (s === '') {
-                  s = t;
-              } else {
-                  s += strSlice('0000000', 0, 7 - t.length) + t;
-              }
-          }
-      }
-      return s;
-  },
-  pow: function pow(x, n, acc) {
-      return (n === 0 ? acc : (n % 2 === 1 ? pow(x, n - 1, acc * x) : pow(x * x, n / 2, acc)));
-  },
-  log: function log(x) {
-      var n = 0;
-      var x2 = x;
-      while (x2 >= 4096) {
-          n += 12;
-          x2 /= 4096;
-      }
-      while (x2 >= 2) {
-          n += 1;
-          x2 /= 2;
-      }
-      return n;
-  }
-};
-
-var toFixedShim = function toFixed(fractionDigits) {
-    var f, x, s, m, e, z, j, k;
-
-    // Test for NaN and round fractionDigits down
-    f = $Number(fractionDigits);
-    f = isActualNaN(f) ? 0 : Math.floor(f);
-
-    if (f < 0 || f > 20) {
-        throw new RangeError('Number.toFixed called with invalid number of decimals');
-    }
 
-    x = $Number(this);
+    var toFixedShim = function toFixed(fractionDigits) {
+        var f, x, s, m, e, z, j, k;
 
-    if (isActualNaN(x)) {
-        return 'NaN';
-    }
+        // Test for NaN and round fractionDigits down
+        f = $Number(fractionDigits);
+        f = isActualNaN(f) ? 0 : Math.floor(f);
 
-    // If it is too big or small, return the string value of the number
-    if (x <= -1e21 || x >= 1e21) {
-        return $String(x);
-    }
+        if (f < 0 || f > 20) {
+            throw new RangeError('Number.toFixed called with invalid number of decimals');
+        }
 
-    s = '';
+        x = $Number(this);
 
-    if (x < 0) {
-        s = '-';
-        x = -x;
-    }
+        if (isActualNaN(x)) {
+            return 'NaN';
+        }
 
-    m = '0';
+        // If it is too big or small, return the string value of the number
+        if (x <= -1e21 || x >= 1e21) {
+            return $String(x);
+        }
 
-    if (x > 1e-21) {
-        // 1e-21 < x < 1e21
-        // -70 < log2(x) < 70
-        e = toFixedHelpers.log(x * toFixedHelpers.pow(2, 69, 1)) - 69;
-        z = (e < 0 ? x * toFixedHelpers.pow(2, -e, 1) : x / toFixedHelpers.pow(2, e, 1));
-        z *= 0x10000000000000; // Math.pow(2, 52);
-        e = 52 - e;
+        s = '';
 
-        // -18 < e < 122
-        // x = z / 2 ^ e
-        if (e > 0) {
-            toFixedHelpers.multiply(0, z);
-            j = f;
+        if (x < 0) {
+            s = '-';
+            x = -x;
+        }
 
-            while (j >= 7) {
-                toFixedHelpers.multiply(1e7, 0);
-                j -= 7;
-            }
+        m = '0';
 
-            toFixedHelpers.multiply(toFixedHelpers.pow(10, j, 1), 0);
-            j = e - 1;
+        if (x > 1e-21) {
+            // 1e-21 < x < 1e21
+            // -70 < log2(x) < 70
+            e = toFixedHelpers.log(x * toFixedHelpers.pow(2, 69, 1)) - 69;
+            z = (e < 0 ? x * toFixedHelpers.pow(2, -e, 1) : x / toFixedHelpers.pow(2, e, 1));
+            z *= 0x10000000000000; // Math.pow(2, 52);
+            e = 52 - e;
 
-            while (j >= 23) {
-                toFixedHelpers.divide(1 << 23);
-                j -= 23;
-            }
+            // -18 < e < 122
+            // x = z / 2 ^ e
+            if (e > 0) {
+                toFixedHelpers.multiply(0, z);
+                j = f;
 
-            toFixedHelpers.divide(1 << j);
-            toFixedHelpers.multiply(1, 1);
-            toFixedHelpers.divide(2);
-            m = toFixedHelpers.numToString();
-        } else {
-            toFixedHelpers.multiply(0, z);
-            toFixedHelpers.multiply(1 << (-e), 0);
-            m = toFixedHelpers.numToString() + strSlice('0.00000000000000000000', 2, 2 + f);
+                while (j >= 7) {
+                    toFixedHelpers.multiply(1e7, 0);
+                    j -= 7;
+                }
+
+                toFixedHelpers.multiply(toFixedHelpers.pow(10, j, 1), 0);
+                j = e - 1;
+
+                while (j >= 23) {
+                    toFixedHelpers.divide(1 << 23);
+                    j -= 23;
+                }
+
+                toFixedHelpers.divide(1 << j);
+                toFixedHelpers.multiply(1, 1);
+                toFixedHelpers.divide(2);
+                m = toFixedHelpers.numToString();
+            } else {
+                toFixedHelpers.multiply(0, z);
+                toFixedHelpers.multiply(1 << (-e), 0);
+                m = toFixedHelpers.numToString() + strSlice('0.00000000000000000000', 2, 2 + f);
+            }
         }
-    }
 
-    if (f > 0) {
-        k = m.length;
+        if (f > 0) {
+            k = m.length;
 
-        if (k <= f) {
-            m = s + strSlice('0.0000000000000000000', 0, f - k + 2) + m;
+            if (k <= f) {
+                m = s + strSlice('0.0000000000000000000', 0, f - k + 2) + m;
+            } else {
+                m = s + strSlice(m, 0, k - f) + '.' + strSlice(m, k - f);
+            }
         } else {
-            m = s + strSlice(m, 0, k - f) + '.' + strSlice(m, k - f);
+            m = s + m;
         }
-    } else {
-        m = s + m;
-    }
 
-    return m;
-};
-defineProperties(NumberPrototype, { toFixed: toFixedShim }, hasToFixedBugs);
+        return m;
+    };
+    defineProperties(NumberPrototype, { toFixed: toFixedShim }, hasToFixedBugs);
 
-var hasToPrecisionUndefinedBug = (function () {
-    try {
-        return 1.0.toPrecision(undefined) === '1';
-    } catch (e) {
-        return true;
-    }
-}());
-var originalToPrecision = NumberPrototype.toPrecision;
-defineProperties(NumberPrototype, {
-    toPrecision: function toPrecision(precision) {
-        return typeof precision === 'undefined' ? originalToPrecision.call(this) : originalToPrecision.call(this, precision);
-    }
-}, hasToPrecisionUndefinedBug);
-
-//
-// String
-// ======
-//
-
-// ES5 15.5.4.14
-// http://es5.github.com/#x15.5.4.14
-
-// [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers]
-// Many browsers do not split properly with regular expressions or they
-// do not perform the split correctly under obscure conditions.
-// See http://blog.stevenlevithan.com/archives/cross-browser-split
-// I've tested in many browsers and this seems to cover the deviant ones:
-//    'ab'.split(/(?:ab)*/) should be ["", ""], not [""]
-//    '.'.split(/(.?)(.?)/) should be ["", ".", "", ""], not ["", ""]
-//    'tesst'.split(/(s)*/) should be ["t", undefined, "e", "s", "t"], not
-//       [undefined, "t", undefined, "e", ...]
-//    ''.split(/.?/) should be [], not [""]
-//    '.'.split(/()()/) should be ["."], not ["", "", "."]
-
-if (
-    'ab'.split(/(?:ab)*/).length !== 2 ||
-    '.'.split(/(.?)(.?)/).length !== 4 ||
-    'tesst'.split(/(s)*/)[1] === 't' ||
-    'test'.split(/(?:)/, -1).length !== 4 ||
-    ''.split(/.?/).length ||
-    '.'.split(/()()/).length > 1
-) {
-    (function () {
-        var compliantExecNpcg = typeof (/()??/).exec('')[1] === 'undefined'; // NPCG: nonparticipating capturing group
-        var maxSafe32BitInt = Math.pow(2, 32) - 1;
-
-        StringPrototype.split = function (separator, limit) {
-            var string = String(this);
-            if (typeof separator === 'undefined' && limit === 0) {
-                return [];
-            }
+    var hasToPrecisionUndefinedBug = (function () {
+        try {
+            return 1.0.toPrecision(undefined) === '1';
+        } catch (e) {
+            return true;
+        }
+    }());
+    var originalToPrecision = NumberPrototype.toPrecision;
+    defineProperties(NumberPrototype, {
+        toPrecision: function toPrecision(precision) {
+            return typeof precision === 'undefined' ? originalToPrecision.call(this) : originalToPrecision.call(this, precision);
+        }
+    }, hasToPrecisionUndefinedBug);
+
+    //
+    // String
+    // ======
+    //
+
+    // ES5 15.5.4.14
+    // http://es5.github.com/#x15.5.4.14
+
+    // [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers]
+    // Many browsers do not split properly with regular expressions or they
+    // do not perform the split correctly under obscure conditions.
+    // See http://blog.stevenlevithan.com/archives/cross-browser-split
+    // I've tested in many browsers and this seems to cover the deviant ones:
+    //    'ab'.split(/(?:ab)*/) should be ["", ""], not [""]
+    //    '.'.split(/(.?)(.?)/) should be ["", ".", "", ""], not ["", ""]
+    //    'tesst'.split(/(s)*/) should be ["t", undefined, "e", "s", "t"], not
+    //       [undefined, "t", undefined, "e", ...]
+    //    ''.split(/.?/) should be [], not [""]
+    //    '.'.split(/()()/) should be ["."], not ["", "", "."]
+
+    if (
+        'ab'.split(/(?:ab)*/).length !== 2 ||
+        '.'.split(/(.?)(.?)/).length !== 4 ||
+        'tesst'.split(/(s)*/)[1] === 't' ||
+        'test'.split(/(?:)/, -1).length !== 4 ||
+        ''.split(/.?/).length ||
+        '.'.split(/()()/).length > 1
+    ) {
+        (function () {
+            var compliantExecNpcg = typeof (/()??/).exec('')[1] === 'undefined'; // NPCG: nonparticipating capturing group
+            var maxSafe32BitInt = Math.pow(2, 32) - 1;
+
+            StringPrototype.split = function (separator, limit) {
+                var string = String(this);
+                if (typeof separator === 'undefined' && limit === 0) {
+                    return [];
+                }
+
+                // If `separator` is not a regex, use native split
+                if (!isRegex(separator)) {
+                    return strSplit(this, separator, limit);
+                }
 
-            // If `separator` is not a regex, use native split
-            if (!isRegex(separator)) {
-                return strSplit(this, separator, limit);
-            }
-
-            var output = [];
-            var flags = (separator.ignoreCase ? 'i' : '') +
-                        (separator.multiline ? 'm' : '') +
-                        (separator.unicode ? 'u' : '') + // in ES6
-                        (separator.sticky ? 'y' : ''), // Firefox 3+ and ES6
-                lastLastIndex = 0,
-                // Make `global` and avoid `lastIndex` issues by working with a copy
-                separator2, match, lastIndex, lastLength;
-            var separatorCopy = new RegExp(separator.source, flags + 'g');
-            if (!compliantExecNpcg) {
-                // Doesn't need flags gy, but they don't hurt
-                separator2 = new RegExp('^' + separatorCopy.source + '$(?!\\s)', flags);
-            }
-            /* Values for `limit`, per the spec:
-             * If undefined: 4294967295 // maxSafe32BitInt
-             * If 0, Infinity, or NaN: 0
-             * If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;
-             * If negative number: 4294967296 - Math.floor(Math.abs(limit))
-             * If other: Type-convert, then use the above rules
-             */
-            var splitLimit = typeof limit === 'undefined' ? maxSafe32BitInt : ES.ToUint32(limit);
-            match = separatorCopy.exec(string);
-            while (match) {
-                // `separatorCopy.lastIndex` is not reliable cross-browser
-                lastIndex = match.index + match[0].length;
-                if (lastIndex > lastLastIndex) {
-                    pushCall(output, strSlice(string, lastLastIndex, match.index));
-                    // Fix browsers whose `exec` methods don't consistently return `undefined` for
-                    // nonparticipating capturing groups
-                    if (!compliantExecNpcg && match.length > 1) {
-                        /* eslint-disable no-loop-func */
-                        match[0].replace(separator2, function () {
-                            for (var i = 1; i < arguments.length - 2; i++) {
-                                if (typeof arguments[i] === 'undefined') {
-                                    match[i] = void 0;
+                var output = [];
+                var flags = (separator.ignoreCase ? 'i' : '') +
+                            (separator.multiline ? 'm' : '') +
+                            (separator.unicode ? 'u' : '') + // in ES6
+                            (separator.sticky ? 'y' : ''), // Firefox 3+ and ES6
+                    lastLastIndex = 0,
+                    // Make `global` and avoid `lastIndex` issues by working with a copy
+                    separator2, match, lastIndex, lastLength;
+                var separatorCopy = new RegExp(separator.source, flags + 'g');
+                if (!compliantExecNpcg) {
+                    // Doesn't need flags gy, but they don't hurt
+                    separator2 = new RegExp('^' + separatorCopy.source + '$(?!\\s)', flags);
+                }
+                /* Values for `limit`, per the spec:
+                 * If undefined: 4294967295 // maxSafe32BitInt
+                 * If 0, Infinity, or NaN: 0
+                 * If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;
+                 * If negative number: 4294967296 - Math.floor(Math.abs(limit))
+                 * If other: Type-convert, then use the above rules
+                 */
+                var splitLimit = typeof limit === 'undefined' ? maxSafe32BitInt : ES.ToUint32(limit);
+                match = separatorCopy.exec(string);
+                while (match) {
+                    // `separatorCopy.lastIndex` is not reliable cross-browser
+                    lastIndex = match.index + match[0].length;
+                    if (lastIndex > lastLastIndex) {
+                        pushCall(output, strSlice(string, lastLastIndex, match.index));
+                        // Fix browsers whose `exec` methods don't consistently return `undefined` for
+                        // nonparticipating capturing groups
+                        if (!compliantExecNpcg && match.length > 1) {
+                            /* eslint-disable no-loop-func */
+                            match[0].replace(separator2, function () {
+                                for (var i = 1; i < arguments.length - 2; i++) {
+                                    if (typeof arguments[i] === 'undefined') {
+                                        match[i] = void 0;
+                                    }
                                 }
-                            }
-                        });
-                        /* eslint-enable no-loop-func */
-                    }
-                    if (match.length > 1 && match.index < string.length) {
-                        array_push.apply(output, arraySlice(match, 1));
+                            });
+                            /* eslint-enable no-loop-func */
+                        }
+                        if (match.length > 1 && match.index < string.length) {
+                            array_push.apply(output, arraySlice(match, 1));
+                        }
+                        lastLength = match[0].length;
+                        lastLastIndex = lastIndex;
+                        if (output.length >= splitLimit) {
+                            break;
+                        }
                     }
-                    lastLength = match[0].length;
-                    lastLastIndex = lastIndex;
-                    if (output.length >= splitLimit) {
-                        break;
+                    if (separatorCopy.lastIndex === match.index) {
+                        separatorCopy.lastIndex++; // Avoid an infinite loop
                     }
+                    match = separatorCopy.exec(string);
                 }
-                if (separatorCopy.lastIndex === match.index) {
-                    separatorCopy.lastIndex++; // Avoid an infinite loop
-                }
-                match = separatorCopy.exec(string);
-            }
-            if (lastLastIndex === string.length) {
-                if (lastLength || !separatorCopy.test('')) {
-                    pushCall(output, '');
+                if (lastLastIndex === string.length) {
+                    if (lastLength || !separatorCopy.test('')) {
+                        pushCall(output, '');
+                    }
+                } else {
+                    pushCall(output, strSlice(string, lastLastIndex));
                 }
-            } else {
-                pushCall(output, strSlice(string, lastLastIndex));
+                return output.length > splitLimit ? arraySlice(output, 0, splitLimit) : output;
+            };
+        }());
+
+    // [bugfix, chrome]
+    // If separator is undefined, then the result array contains just one String,
+    // which is the this value (converted to a String). If limit is not undefined,
+    // then the output array is truncated so that it contains no more than limit
+    // elements.
+    // "0".split(undefined, 0) -> []
+    } else if ('0'.split(void 0, 0).length) {
+        StringPrototype.split = function split(separator, limit) {
+            if (typeof separator === 'undefined' && limit === 0) {
+                return [];
             }
-            return output.length > splitLimit ? arraySlice(output, 0, splitLimit) : output;
+            return strSplit(this, separator, limit);
         };
-    }());
+    }
 
-// [bugfix, chrome]
-// If separator is undefined, then the result array contains just one String,
-// which is the this value (converted to a String). If limit is not undefined,
-// then the output array is truncated so that it contains no more than limit
-// elements.
-// "0".split(undefined, 0) -> []
-} else if ('0'.split(void 0, 0).length) {
-    StringPrototype.split = function split(separator, limit) {
-        if (typeof separator === 'undefined' && limit === 0) { return []; }
-        return strSplit(this, separator, limit);
-    };
-}
+    var str_replace = StringPrototype.replace;
+    var replaceReportsGroupsCorrectly = (function () {
+        var groups = [];
+        'x'.replace(/x(.)?/g, function (match, group) {
+            pushCall(groups, group);
+        });
+        return groups.length === 1 && typeof groups[0] === 'undefined';
+    }());
 
-var str_replace = StringPrototype.replace;
-var replaceReportsGroupsCorrectly = (function () {
-    var groups = [];
-    'x'.replace(/x(.)?/g, function (match, group) {
-        pushCall(groups, group);
-    });
-    return groups.length === 1 && typeof groups[0] === 'undefined';
-}());
-
-if (!replaceReportsGroupsCorrectly) {
-    StringPrototype.replace = function replace(searchValue, replaceValue) {
-        var isFn = isCallable(replaceValue);
-        var hasCapturingGroups = isRegex(searchValue) && (/\)[*?]/).test(searchValue.source);
-        if (!isFn || !hasCapturingGroups) {
-            return str_replace.call(this, searchValue, replaceValue);
-        } else {
-            var wrappedReplaceValue = function (match) {
-                var length = arguments.length;
-                var originalLastIndex = searchValue.lastIndex;
-                searchValue.lastIndex = 0;
-                var args = searchValue.exec(match) || [];
-                searchValue.lastIndex = originalLastIndex;
-                pushCall(args, arguments[length - 2], arguments[length - 1]);
-                return replaceValue.apply(this, args);
-            };
-            return str_replace.call(this, searchValue, wrappedReplaceValue);
-        }
-    };
-}
-
-// ECMA-262, 3rd B.2.3
-// Not an ECMAScript standard, although ECMAScript 3rd Edition has a
-// non-normative section suggesting uniform semantics and it should be
-// normalized across all browsers
-// [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE
-var string_substr = StringPrototype.substr;
-var hasNegativeSubstrBug = ''.substr && '0b'.substr(-1) !== 'b';
-defineProperties(StringPrototype, {
-    substr: function substr(start, length) {
-        var normalizedStart = start;
-        if (start < 0) {
-            normalizedStart = max(this.length + start, 0);
-        }
-        return string_substr.call(this, normalizedStart, length);
-    }
-}, hasNegativeSubstrBug);
-
-// ES5 15.5.4.20
-// whitespace from: http://es5.github.io/#x15.5.4.20
-var ws = '\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003' +
-    '\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028' +
-    '\u2029\uFEFF';
-var zeroWidth = '\u200b';
-var wsRegexChars = '[' + ws + ']';
-var trimBeginRegexp = new RegExp('^' + wsRegexChars + wsRegexChars + '*');
-var trimEndRegexp = new RegExp(wsRegexChars + wsRegexChars + '*$');
-var hasTrimWhitespaceBug = StringPrototype.trim && (ws.trim() || !zeroWidth.trim());
-defineProperties(StringPrototype, {
-    // http://blog.stevenlevithan.com/archives/faster-trim-javascript
-    // http://perfectionkills.com/whitespace-deviations/
-    trim: function trim() {
-        if (typeof this === 'undefined' || this === null) {
-            throw new TypeError("can't convert " + this + ' to object');
-        }
-        return $String(this).replace(trimBeginRegexp, '').replace(trimEndRegexp, '');
+    if (!replaceReportsGroupsCorrectly) {
+        StringPrototype.replace = function replace(searchValue, replaceValue) {
+            var isFn = isCallable(replaceValue);
+            var hasCapturingGroups = isRegex(searchValue) && (/\)[*?]/).test(searchValue.source);
+            if (!isFn || !hasCapturingGroups) {
+                return str_replace.call(this, searchValue, replaceValue);
+            } else {
+                var wrappedReplaceValue = function (match) {
+                    var length = arguments.length;
+                    var originalLastIndex = searchValue.lastIndex;
+                    searchValue.lastIndex = 0;
+                    var args = searchValue.exec(match) || [];
+                    searchValue.lastIndex = originalLastIndex;
+                    pushCall(args, arguments[length - 2], arguments[length - 1]);
+                    return replaceValue.apply(this, args);
+                };
+                return str_replace.call(this, searchValue, wrappedReplaceValue);
+            }
+        };
     }
-}, hasTrimWhitespaceBug);
-var trim = call.bind(String.prototype.trim);
-
-var hasLastIndexBug = StringPrototype.lastIndexOf && 'abcあい'.lastIndexOf('あい', 2) !== -1;
-defineProperties(StringPrototype, {
-    lastIndexOf: function lastIndexOf(searchString) {
-        if (typeof this === 'undefined' || this === null) {
-            throw new TypeError("can't convert " + this + ' to object');
+
+    // ECMA-262, 3rd B.2.3
+    // Not an ECMAScript standard, although ECMAScript 3rd Edition has a
+    // non-normative section suggesting uniform semantics and it should be
+    // normalized across all browsers
+    // [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE
+    var string_substr = StringPrototype.substr;
+    var hasNegativeSubstrBug = ''.substr && '0b'.substr(-1) !== 'b';
+    defineProperties(StringPrototype, {
+        substr: function substr(start, length) {
+            var normalizedStart = start;
+            if (start < 0) {
+                normalizedStart = max(this.length + start, 0);
+            }
+            return string_substr.call(this, normalizedStart, length);
+        }
+    }, hasNegativeSubstrBug);
+
+    // ES5 15.5.4.20
+    // whitespace from: http://es5.github.io/#x15.5.4.20
+    var ws = '\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003' +
+        '\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028' +
+        '\u2029\uFEFF';
+    var zeroWidth = '\u200b';
+    var wsRegexChars = '[' + ws + ']';
+    var trimBeginRegexp = new RegExp('^' + wsRegexChars + wsRegexChars + '*');
+    var trimEndRegexp = new RegExp(wsRegexChars + wsRegexChars + '*$');
+    var hasTrimWhitespaceBug = StringPrototype.trim && (ws.trim() || !zeroWidth.trim());
+    defineProperties(StringPrototype, {
+        // http://blog.stevenlevithan.com/archives/faster-trim-javascript
+        // http://perfectionkills.com/whitespace-deviations/
+        trim: function trim() {
+            if (typeof this === 'undefined' || this === null) {
+                throw new TypeError("can't convert " + this + ' to object');
+            }
+            return $String(this).replace(trimBeginRegexp, '').replace(trimEndRegexp, '');
         }
-        var S = $String(this);
-        var searchStr = $String(searchString);
-        var numPos = arguments.length > 1 ? $Number(arguments[1]) : NaN;
-        var pos = isActualNaN(numPos) ? Infinity : ES.ToInteger(numPos);
-        var start = min(max(pos, 0), S.length);
-        var searchLen = searchStr.length;
-        var k = start + searchLen;
-        while (k > 0) {
-            k = max(0, k - searchLen);
-            var index = strIndexOf(strSlice(S, k, start + searchLen), searchStr);
-            if (index !== -1) {
-                return k + index;
+    }, hasTrimWhitespaceBug);
+    var trim = call.bind(String.prototype.trim);
+
+    var hasLastIndexBug = StringPrototype.lastIndexOf && 'abcあい'.lastIndexOf('あい', 2) !== -1;
+    defineProperties(StringPrototype, {
+        lastIndexOf: function lastIndexOf(searchString) {
+            if (typeof this === 'undefined' || this === null) {
+                throw new TypeError("can't convert " + this + ' to object');
+            }
+            var S = $String(this);
+            var searchStr = $String(searchString);
+            var numPos = arguments.length > 1 ? $Number(arguments[1]) : NaN;
+            var pos = isActualNaN(numPos) ? Infinity : ES.ToInteger(numPos);
+            var start = min(max(pos, 0), S.length);
+            var searchLen = searchStr.length;
+            var k = start + searchLen;
+            while (k > 0) {
+                k = max(0, k - searchLen);
+                var index = strIndexOf(strSlice(S, k, start + searchLen), searchStr);
+                if (index !== -1) {
+                    return k + index;
+                }
             }
+            return -1;
         }
-        return -1;
+    }, hasLastIndexBug);
+
+    var originalLastIndexOf = StringPrototype.lastIndexOf;
+    defineProperties(StringPrototype, {
+        lastIndexOf: function lastIndexOf(searchString) {
+            return originalLastIndexOf.apply(this, arguments);
+        }
+    }, StringPrototype.lastIndexOf.length !== 1);
+
+    // ES-5 15.1.2.2
+    /* eslint-disable radix */
+    if (parseInt(ws + '08') !== 8 || parseInt(ws + '0x16') !== 22) {
+    /* eslint-enable radix */
+        /* global parseInt: true */
+        parseInt = (function (origParseInt) {
+            var hexRegex = /^[\-+]?0[xX]/;
+            return function parseInt(str, radix) {
+                var string = trim(String(str));
+                var defaultedRadix = $Number(radix) || (hexRegex.test(string) ? 16 : 10);
+                return origParseInt(string, defaultedRadix);
+            };
+        }(parseInt));
     }
-}, hasLastIndexBug);
 
-var originalLastIndexOf = StringPrototype.lastIndexOf;
-defineProperties(StringPrototype, {
-    lastIndexOf: function lastIndexOf(searchString) {
-        return originalLastIndexOf.apply(this, arguments);
+    // https://es5.github.io/#x15.1.2.3
+    if (1 / parseFloat('-0') !== -Infinity) {
+        /* global parseFloat: true */
+        parseFloat = (function (origParseFloat) {
+            return function parseFloat(string) {
+                var inputString = trim(String(string));
+                var result = origParseFloat(inputString);
+                return result === 0 && strSlice(inputString, 0, 1) === '-' ? -0 : result;
+            };
+        }(parseFloat));
     }
-}, StringPrototype.lastIndexOf.length !== 1);
-
-// ES-5 15.1.2.2
-/* eslint-disable radix */
-if (parseInt(ws + '08') !== 8 || parseInt(ws + '0x16') !== 22) {
-/* eslint-enable radix */
-    /* global parseInt: true */
-    parseInt = (function (origParseInt) {
-        var hexRegex = /^[\-+]?0[xX]/;
-        return function parseInt(str, radix) {
-            var string = trim(str);
-            var defaultedRadix = $Number(radix) || (hexRegex.test(string) ? 16 : 10);
-            return origParseInt(string, defaultedRadix);
-        };
-    }(parseInt));
-}
-
-// https://es5.github.io/#x15.1.2.3
-if (1 / parseFloat('-0') !== -Infinity) {
-    /* global parseFloat: true */
-    parseFloat = (function (origParseFloat) {
-        return function parseFloat(string) {
-            var inputString = trim(string);
-            var result = origParseFloat(inputString);
-            return result === 0 && strSlice(inputString, 0, 1) === '-' ? -0 : result;
-        };
-    }(parseFloat));
-}
 
-if (String(new RangeError('test')) !== 'RangeError: test') {
-    var errorToStringShim = function toString() {
-        if (typeof this === 'undefined' || this === null) {
-            throw new TypeError("can't convert " + this + ' to object');
-        }
-        var name = this.name;
-        if (typeof name === 'undefined') {
-            name = 'Error';
-        } else if (typeof name !== 'string') {
-            name = $String(name);
-        }
-        var msg = this.message;
-        if (typeof msg === 'undefined') {
-            msg = '';
-        } else if (typeof msg !== 'string') {
-            msg = $String(msg);
-        }
-        if (!name) {
-            return msg;
-        }
-        if (!msg) {
-            return name;
-        }
-        return name + ': ' + msg;
-    };
-    // can't use defineProperties here because of toString enumeration issue in IE <= 8
-    Error.prototype.toString = errorToStringShim;
-}
+    if (String(new RangeError('test')) !== 'RangeError: test') {
+        var errorToStringShim = function toString() {
+            if (typeof this === 'undefined' || this === null) {
+                throw new TypeError("can't convert " + this + ' to object');
+            }
+            var name = this.name;
+            if (typeof name === 'undefined') {
+                name = 'Error';
+            } else if (typeof name !== 'string') {
+                name = $String(name);
+            }
+            var msg = this.message;
+            if (typeof msg === 'undefined') {
+                msg = '';
+            } else if (typeof msg !== 'string') {
+                msg = $String(msg);
+            }
+            if (!name) {
+                return msg;
+            }
+            if (!msg) {
+                return name;
+            }
+            return name + ': ' + msg;
+        };
+        // can't use defineProperties here because of toString enumeration issue in IE <= 8
+        Error.prototype.toString = errorToStringShim;
+    }
 
-if (supportsDescriptors) {
-    var ensureNonEnumerable = function (obj, prop) {
-        if (isEnum(obj, prop)) {
-            var desc = Object.getOwnPropertyDescriptor(obj, prop);
-            if (desc.configurable) {
-              desc.enumerable = false;
-              Object.defineProperty(obj, prop, desc);
+    if (supportsDescriptors) {
+        var ensureNonEnumerable = function (obj, prop) {
+            if (isEnum(obj, prop)) {
+                var desc = Object.getOwnPropertyDescriptor(obj, prop);
+                if (desc.configurable) {
+                    desc.enumerable = false;
+                    Object.defineProperty(obj, prop, desc);
+                }
             }
+        };
+        ensureNonEnumerable(Error.prototype, 'message');
+        if (Error.prototype.message !== '') {
+            Error.prototype.message = '';
         }
-    };
-    ensureNonEnumerable(Error.prototype, 'message');
-    if (Error.prototype.message !== '') {
-      Error.prototype.message = '';
+        ensureNonEnumerable(Error.prototype, 'name');
     }
-    ensureNonEnumerable(Error.prototype, 'name');
-}
-
-if (String(/a/mig) !== '/a/gim') {
-    var regexToString = function toString() {
-        var str = '/' + this.source + '/';
-        if (this.global) {
-            str += 'g';
-        }
-        if (this.ignoreCase) {
-            str += 'i';
-        }
-        if (this.multiline) {
-            str += 'm';
-        }
-        return str;
-    };
-    // can't use defineProperties here because of toString enumeration issue in IE <= 8
-    RegExp.prototype.toString = regexToString;
-}
 
+    if (String(/a/mig) !== '/a/gim') {
+        var regexToString = function toString() {
+            var str = '/' + this.source + '/';
+            if (this.global) {
+                str += 'g';
+            }
+            if (this.ignoreCase) {
+                str += 'i';
+            }
+            if (this.multiline) {
+                str += 'm';
+            }
+            return str;
+        };
+        // can't use defineProperties here because of toString enumeration issue in IE <= 8
+        RegExp.prototype.toString = regexToString;
+    }
 }));
diff --git a/es5-shim.map b/es5-shim.map
index 82d4855..5118831 100644
--- a/es5-shim.map
+++ b/es5-shim.map
@@ -1 +1 @@
-{"version":3,"sources":["es5-shim.js"],"names":["root","factory","define","amd","exports","module","returnExports","this","$Array","Array","ArrayPrototype","prototype","$Object","Object","ObjectPrototype","$Function","Function","FunctionPrototype","$String","String","StringPrototype","$Number","Number","NumberPrototype","array_slice","slice","array_splice","splice","array_push","push","array_unshift","unshift","array_concat","concat","array_join","join","call","apply","max","Math","min", [...]
\ No newline at end of file
+{"version":3,"sources":["es5-shim.js"],"names":["root","factory","define","amd","exports","module","returnExports","this","$Array","Array","ArrayPrototype","prototype","$Object","Object","ObjectPrototype","$Function","Function","FunctionPrototype","$String","String","StringPrototype","$Number","Number","NumberPrototype","array_slice","slice","array_splice","splice","array_push","push","array_unshift","unshift","array_concat","concat","array_join","join","call","apply","max","Math","min", [...]
\ No newline at end of file
diff --git a/es5-shim.min.js b/es5-shim.min.js
index e786c62..14b24f1 100644
--- a/es5-shim.min.js
+++ b/es5-shim.min.js
@@ -1,7 +1,7 @@
 /*!
  * https://github.com/es-shims/es5-shim
  * @license es5-shim Copyright 2009-2015 by contributors, MIT License
- * see https://github.com/es-shims/es5-shim/blob/v4.5.7/LICENSE
+ * see https://github.com/es-shims/es5-shim/blob/v4.5.9/LICENSE
  */
-(function(t,r){"use strict";if(typeof define==="function"&&define.amd){define(r)}else if(typeof exports==="object"){module.exports=r()}else{t.returnExports=r()}})(this,function(){var t=Array;var r=t.prototype;var e=Object;var n=e.prototype;var i=Function;var a=i.prototype;var o=String;var f=o.prototype;var u=Number;var l=u.prototype;var s=r.slice;var c=r.splice;var v=r.push;var h=r.unshift;var p=r.concat;var y=r.join;var d=a.call;var g=a.apply;var w=Math.max;var b=Math.min;var T=n.toStri [...]
+(function(t,r){"use strict";if(typeof define==="function"&&define.amd){define(r)}else if(typeof exports==="object"){module.exports=r()}else{t.returnExports=r()}})(this,function(){var t=Array;var r=t.prototype;var e=Object;var n=e.prototype;var i=Function;var a=i.prototype;var o=String;var f=o.prototype;var u=Number;var l=u.prototype;var s=r.slice;var c=r.splice;var v=r.push;var h=r.unshift;var p=r.concat;var y=r.join;var d=a.call;var g=a.apply;var w=Math.max;var b=Math.min;var T=n.toStri [...]
 //# sourceMappingURL=es5-shim.map
diff --git a/package.json b/package.json
index b944e38..2c04981 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "es5-shim",
-  "version": "4.5.8",
+  "version": "4.5.9",
   "description": "ECMAScript 5 compatibility shims for legacy JavaScript engines",
   "homepage": "http://github.com/es-shims/es5-shim/",
   "contributors": [
@@ -34,14 +34,14 @@
     "jscs": "jscs tests/helpers/*.js tests/spec/*.js es5-shim.js es5-sham.js"
   },
   "devDependencies": {
-    "eslint": "^2.7.0",
-    "@ljharb/eslint-config": "^2.2.0",
+    "eslint": "^2.12.0",
+    "@ljharb/eslint-config": "^5.0.0",
     "jasmine-node": "^1.14.5",
-    "jscs": "^2.11.0",
+    "jscs": "^3.0.4",
     "uglify-js": "^2.6.2",
     "replace": "^0.3.0",
     "semver": "^5.1.0",
-    "concurrently": "^2.0.0"
+    "concurrently": "^2.1.0"
   },
   "engines": {
     "node": ">=0.4.0"
diff --git a/tests/lib/jasmine.js b/tests/lib/jasmine.js
index edc003b..fd91ed9 100644
--- a/tests/lib/jasmine.js
+++ b/tests/lib/jasmine.js
@@ -1326,11 +1326,11 @@ jasmine.Matchers.prototype.toBeNull = function() {
  * Matcher that compares the actual to NaN.
  */
 jasmine.Matchers.prototype.toBeNaN = function() {
-	this.message = function() {
-		return [ "Expected " + jasmine.pp(this.actual) + " to be NaN." ];
-	};
+    this.message = function() {
+        return [ "Expected " + jasmine.pp(this.actual) + " to be NaN." ];
+    };
 
-	return (this.actual !== this.actual);
+    return (this.actual !== this.actual);
 };
 
 /**
diff --git a/tests/spec/s-array.js b/tests/spec/s-array.js
index f28891c..c1bd0b6 100644
--- a/tests/spec/s-array.js
+++ b/tests/spec/s-array.js
@@ -5,9 +5,9 @@ var canDistinguishSparseFromUndefined = 0 in [undefined]; // IE 6 - 8 have a bug
 var ifHasDenseUndefinedsIt = canDistinguishSparseFromUndefined ? it : xit;
 var undefinedIfNoSparseBug = canDistinguishSparseFromUndefined ? undefined : { valueOf: function () { return 0; } };
 var hasStrictMode = (function () {
-  'use strict';
+    'use strict';
 
-   return !this;
+    return !this;
 }());
 var ifHasStrictIt = hasStrictMode ? it : xit;
 
@@ -1487,10 +1487,10 @@ describe('Array', function () {
             tooBig[8] = 'x';
 
             justFine.splice(1, 1);
-			expect(8 in justFine).toBe(false);
+            expect(8 in justFine).toBe(false);
             expect(justFine.indexOf('x')).toBe(9);
             tooBig.splice(1, 1);
-			expect(6 in tooBig).toBe(false);
+            expect(6 in tooBig).toBe(false);
             expect(tooBig.indexOf('x')).toBe(7);
         });
     });
@@ -1588,7 +1588,7 @@ describe('Array', function () {
 
         it('works with `arguments`', function () {
             var obj = (function () {
-              return arguments;
+                return arguments;
             }(1, 2, 3, 4));
             var result = Array.prototype.slice.call(obj, 1, 3);
             expect(result).toEqual([2, 3]);
@@ -1866,49 +1866,49 @@ describe('Array', function () {
             });
 
             it('should sort objects ascending with length', function () {
-                    var actual = {
-                        0: 5,
-                        1: 2,
-                        2: 4,
-                        3: 6,
-                        4: 1,
-                        5: 3,
-                        length: 6
-                    };
-                    var expected = {
-                        0: 1,
-                        1: 2,
-                        2: 3,
-                        3: 4,
-                        4: 5,
-                        5: 6,
-                        length: 6
-                    };
-                    Array.prototype.sort.call(actual);
-                    expect(actual).toEqual(expected);
+                var actual = {
+                    0: 5,
+                    1: 2,
+                    2: 4,
+                    3: 6,
+                    4: 1,
+                    5: 3,
+                    length: 6
+                };
+                var expected = {
+                    0: 1,
+                    1: 2,
+                    2: 3,
+                    3: 4,
+                    4: 5,
+                    5: 6,
+                    length: 6
+                };
+                Array.prototype.sort.call(actual);
+                expect(actual).toEqual(expected);
             });
 
             it('should sort objects descending with length', function () {
-                    var actual = {
-                        0: 5,
-                        1: 2,
-                        2: 4,
-                        3: 6,
-                        4: 1,
-                        5: 3,
-                        length: 6
-                    };
-                    var expected = {
-                        0: 6,
-                        1: 5,
-                        2: 4,
-                        3: 3,
-                        4: 2,
-                        5: 1,
-                        length: 6
-                    };
-                    Array.prototype.sort.call(actual, descending);
-                    expect(actual).toEqual(expected);
+                var actual = {
+                    0: 5,
+                    1: 2,
+                    2: 4,
+                    3: 6,
+                    4: 1,
+                    5: 3,
+                    length: 6
+                };
+                var expected = {
+                    0: 6,
+                    1: 5,
+                    2: 4,
+                    3: 3,
+                    4: 2,
+                    5: 1,
+                    length: 6
+                };
+                Array.prototype.sort.call(actual, descending);
+                expect(actual).toEqual(expected);
             });
 
             it('should sort objects descending with mixed content types and with length', function () {
diff --git a/tests/spec/s-date.js b/tests/spec/s-date.js
index 1684926..3f65fb2 100644
--- a/tests/spec/s-date.js
+++ b/tests/spec/s-date.js
@@ -10,7 +10,7 @@ describe('Date', function () {
                 enumerable: false,
                 value: obj
             });
-            for (var _ in obj) {
+            for (var _ in obj) { // jscs:ignore disallowUnusedVariables
                 return false;
             }
             return obj.x === obj;
diff --git a/tests/spec/s-error.js b/tests/spec/s-error.js
index 7f38bab..a9030d3 100644
--- a/tests/spec/s-error.js
+++ b/tests/spec/s-error.js
@@ -7,7 +7,7 @@ describe('Error', function () {
         try {
             var obj = {};
             Object.defineProperty(obj, 'x', { enumerable: false, value: obj });
-            for (var _ in obj) { return false; }
+            for (var _ in obj) { return false; } // jscs:ignore disallowUnusedVariables
             return obj.x === obj;
         } catch (e) { /* this is ES3 */
             return false;
diff --git a/tests/spec/s-function.js b/tests/spec/s-function.js
index 97237ad..cae3290 100644
--- a/tests/spec/s-function.js
+++ b/tests/spec/s-function.js
@@ -110,7 +110,7 @@ describe('Function', function () {
         it('passes the correct arguments as a constructor', function () {
             var expected = { name: 'Correct' };
             testSubject.Func = function (arg) {
-                expect(this.hasOwnProperty('name')).toBe(false);
+                expect(Object.prototype.hasOwnProperty.call(this, 'name')).toBe(false);
                 return arg;
             }.bind({ name: 'Incorrect' });
             var ret = new testSubject.Func(expected);
diff --git a/tests/spec/s-global.js b/tests/spec/s-global.js
index 4fb5cf2..9620681 100644
--- a/tests/spec/s-global.js
+++ b/tests/spec/s-global.js
@@ -18,7 +18,7 @@ describe('global methods', function () {
         /* eslint-disable radix */
 
         ifFunctionsHaveNamesIt('has the right name', function () {
-          expect(parseInt.name).toBe('parseInt');
+            expect(parseInt.name).toBe('parseInt');
         });
 
         it('accepts a radix', function () {
@@ -28,14 +28,14 @@ describe('global methods', function () {
         });
 
         it('defaults the radix to 10 when the number does not start with 0x or 0X', function () {
-           [
-               '01',
-               '08',
-               '10',
-               '42'
-           ].forEach(function (str) {
-               expect(parseInt(str)).toBe(parseInt(str, 10));
-           });
+            [
+                '01',
+                '08',
+                '10',
+                '42'
+            ].forEach(function (str) {
+                expect(parseInt(str)).toBe(parseInt(str, 10));
+            });
         });
 
         it('defaults the radix to 16 when the number starts with 0x or 0X', function () {
@@ -67,6 +67,12 @@ describe('global methods', function () {
             expect(parseInt('+0xF')).toBe(15);
             expect(parseInt('+0xF', 16)).toBe(15);
         });
+
+        it('NaN parsing', function () {
+            expect(parseInt(undefined)).toBeNaN();
+            expect(parseInt(null)).toBeNaN();
+            expect(parseInt(NaN)).toBeNaN();
+        });
         /* eslint-enable radix */
     });
 
@@ -79,5 +85,11 @@ describe('global methods', function () {
             expect(is(parseFloat('-0'), -0) ? '-0' : '+0').toBe('-0');
             expect(is(parseFloat(' -0'), -0) ? '-0' : '+0').toBe('-0');
         });
+
+        it('NaN parsing', function () {
+            expect(parseFloat(undefined)).toBeNaN();
+            expect(parseFloat(null)).toBeNaN();
+            expect(parseFloat(NaN)).toBeNaN();
+        });
     });
 });
diff --git a/tests/spec/s-number.js b/tests/spec/s-number.js
index 441a7a9..ab6c9c9 100644
--- a/tests/spec/s-number.js
+++ b/tests/spec/s-number.js
@@ -22,9 +22,9 @@ describe('Number', function () {
         });
 
         it('works as expected', function () {
-			expect((0.00008).toPrecision(3)).toBe('0.0000800');
-			expect((1.255).toPrecision(2)).toBe('1.3');
-			expect((1843654265.0774949).toPrecision(13)).toBe('1843654265.077');
+            expect((0.00008).toPrecision(3)).toBe('0.0000800');
+            expect((1.255).toPrecision(2)).toBe('1.3');
+            expect((1843654265.0774949).toPrecision(13)).toBe('1843654265.077');
             expect(NaN.toPrecision(1)).toBe('NaN');
         });
 
diff --git a/tests/spec/s-object.js b/tests/spec/s-object.js
index f46a848..81d637e 100644
--- a/tests/spec/s-object.js
+++ b/tests/spec/s-object.js
@@ -1,10 +1,11 @@
 /* global describe, it, xit, expect, beforeEach, jasmine, window */
 
+var has = Object.prototype.hasOwnProperty;
 var supportsDescriptors = Object.defineProperty && (function () {
     try {
         var obj = {};
         Object.defineProperty(obj, 'x', { enumerable: false, value: obj });
-        for (var _ in obj) { return false; }
+        for (var _ in obj) { return false; } // jscs:ignore disallowUnusedVariables
         return obj.x === obj;
     } catch (e) { /* this is ES3 */
         return false;
@@ -86,7 +87,7 @@ describe('Object', function () {
 
         it('should return names which are own properties', function () {
             keys.forEach(function (name) {
-                expect(obj.hasOwnProperty(name)).toBe(true);
+                expect(has.call(obj, name)).toBe(true);
             });
         });
 
@@ -109,18 +110,18 @@ describe('Object', function () {
         });
 
         describe('enumerating over non-enumerable properties', function () {
-             it('has no enumerable keys on a Function', function () {
-                 var Foo = function () {};
-                 expect(Object.keys(Foo.prototype)).toEqual([]);
-             });
+            it('has no enumerable keys on a Function', function () {
+                var Foo = function () {};
+                expect(Object.keys(Foo.prototype)).toEqual([]);
+            });
 
-             it('has no enumerable keys on a boolean', function () {
-                 expect(Object.keys(Boolean.prototype)).toEqual([]);
-             });
+            it('has no enumerable keys on a boolean', function () {
+                expect(Object.keys(Boolean.prototype)).toEqual([]);
+            });
 
-             it('has no enumerable keys on an object', function () {
-                 expect(Object.keys(Object.prototype)).toEqual([]);
-             });
+            it('has no enumerable keys on an object', function () {
+                expect(Object.keys(Object.prototype)).toEqual([]);
+            });
         });
 
         it('works with boxed primitives', function () {
@@ -138,30 +139,29 @@ describe('Object', function () {
         });
 
         ifWindowIt('can serialize all objects on the `window`', function () {
-          var has = Object.prototype.hasOwnProperty;
-          var windowItemKeys, exception;
-          var blacklistedKeys = ['window', 'console', 'parent', 'self', 'frame', 'frames', 'frameElement', 'external'];
-          if (supportsDescriptors) {
-              Object.defineProperty(window, 'thrower', {
-                  configurable: true,
-                  get: function () { throw new RangeError('thrower!'); }
-              });
-          }
-          for (var k in window) {
-              windowItemKeys = exception = void 0;
-              if (blacklistedKeys.indexOf(k) === -1 && has.call(window, k) && window[k] !== null && typeof window[k] === 'object') {
-                     try {
-                         windowItemKeys = Object.keys(window[k]);
-                     } catch (e) {
-                         exception = e;
-                     }
-                     expect(Array.isArray(windowItemKeys)).toBe(true);
-                     expect(exception).toBeUndefined();
-              }
-          }
-          if (supportsDescriptors) {
-             delete window.thrower;
-          }
+            var windowItemKeys, exception;
+            var blacklistedKeys = ['window', 'console', 'parent', 'self', 'frame', 'frames', 'frameElement', 'external'];
+            if (supportsDescriptors) {
+                Object.defineProperty(window, 'thrower', {
+                    configurable: true,
+                    get: function () { throw new RangeError('thrower!'); }
+                });
+            }
+            for (var k in window) {
+                windowItemKeys = exception = void 0;
+                if (blacklistedKeys.indexOf(k) === -1 && has.call(window, k) && window[k] !== null && typeof window[k] === 'object') {
+                    try {
+                        windowItemKeys = Object.keys(window[k]);
+                    } catch (e) {
+                        exception = e;
+                    }
+                    expect(Array.isArray(windowItemKeys)).toBe(true);
+                    expect(exception).toBeUndefined();
+                }
+            }
+            if (supportsDescriptors) {
+                delete window.thrower;
+            }
         });
     });
 
@@ -198,18 +198,18 @@ describe('Object', function () {
         var obj;
 
         beforeEach(function () {
-           obj = {};
+            obj = {};
 
-           Object.defineProperty(obj, 'name', {
-               value: 'Testing',
-               configurable: true,
-               enumerable: true,
-               writable: true
-           });
+            Object.defineProperty(obj, 'name', {
+                value: 'Testing',
+                configurable: true,
+                enumerable: true,
+                writable: true
+            });
         });
 
         it('should return the initial value', function () {
-            expect(obj.hasOwnProperty('name')).toBeTruthy();
+            expect(has.call(obj, 'name')).toBeTruthy();
             expect(obj.name).toBe('Testing');
         });
 
@@ -222,7 +222,7 @@ describe('Object', function () {
             var child = Object.create(obj, {});
 
             expect(child.name).toBe('Testing');
-            expect(child.hasOwnProperty('name')).toBeFalsy();
+            expect(has.call(child, 'name')).toBeFalsy();
         });
 
         it('should not override the parent value', function () {
@@ -341,7 +341,7 @@ describe('Object', function () {
             var target = {};
             var newProperties = {
                 constructor: {
-                  value: 'new constructor'
+                    value: 'new constructor'
                 }
             };
             Object.defineProperties(target, newProperties);
diff --git a/tests/spec/s-regexp.js b/tests/spec/s-regexp.js
index a336602..0b56ec1 100644
--- a/tests/spec/s-regexp.js
+++ b/tests/spec/s-regexp.js
@@ -5,23 +5,23 @@ describe('RegExp', function () {
 
     describe('#toString()', function () {
         describe('literals', function () {
-          it('should return correct flags and in correct order', function () {
-              expect(String(/pattern/)).toBe('/pattern/');
-              expect(String(/pattern/i)).toBe('/pattern/i');
-              expect(String(/pattern/mi)).toBe('/pattern/im');
-              expect(String(/pattern/im)).toBe('/pattern/im');
-              expect(String(/pattern/mgi)).toBe('/pattern/gim');
-          });
+            it('should return correct flags and in correct order', function () {
+                expect(String(/pattern/)).toBe('/pattern/');
+                expect(String(/pattern/i)).toBe('/pattern/i');
+                expect(String(/pattern/mi)).toBe('/pattern/im');
+                expect(String(/pattern/im)).toBe('/pattern/im');
+                expect(String(/pattern/mgi)).toBe('/pattern/gim');
+            });
         });
 
         describe('objects', function () {
-          it('should return correct flags and in correct order', function () {
-              expect(String(new RegExp('pattern'))).toBe('/pattern/');
-              expect(String(new RegExp('pattern', 'i'))).toBe('/pattern/i');
-              expect(String(new RegExp('pattern', 'mi'))).toBe('/pattern/im');
-              expect(String(new RegExp('pattern', 'im'))).toBe('/pattern/im');
-              expect(String(new RegExp('pattern', 'mgi'))).toBe('/pattern/gim');
-          });
+            it('should return correct flags and in correct order', function () {
+                expect(String(new RegExp('pattern'))).toBe('/pattern/');
+                expect(String(new RegExp('pattern', 'i'))).toBe('/pattern/i');
+                expect(String(new RegExp('pattern', 'mi'))).toBe('/pattern/im');
+                expect(String(new RegExp('pattern', 'im'))).toBe('/pattern/im');
+                expect(String(new RegExp('pattern', 'mgi'))).toBe('/pattern/gim');
+            });
         });
     });
 });
diff --git a/tests/spec/s-string.js b/tests/spec/s-string.js
index 74439c5..caf8db4 100644
--- a/tests/spec/s-string.js
+++ b/tests/spec/s-string.js
@@ -235,35 +235,35 @@ describe('String', function () {
     });
 
     describe('#indexOf()', function () {
-      it('has basic support', function () {
-          expect('abcab'.indexOf('a')).toBe(0);
-          expect('abcab'.indexOf('a', 1)).toBe(3);
-          expect('abcab'.indexOf('a', 4)).toBe(-1);
-      });
+        it('has basic support', function () {
+            expect('abcab'.indexOf('a')).toBe(0);
+            expect('abcab'.indexOf('a', 1)).toBe(3);
+            expect('abcab'.indexOf('a', 4)).toBe(-1);
+        });
 
-      it('works with unicode', function () {
-          expect('あいabcあいabc'.indexOf('あい')).toBe(0);
-          expect('あいabcあいabc'.indexOf('あい', 0)).toBe(0);
-          expect('あいabcあいabc'.indexOf('あい', 1)).toBe(5);
-          expect('あいabcあいabc'.indexOf('あい', 6)).toBe(-1);
-      });
+        it('works with unicode', function () {
+            expect('あいabcあいabc'.indexOf('あい')).toBe(0);
+            expect('あいabcあいabc'.indexOf('あい', 0)).toBe(0);
+            expect('あいabcあいabc'.indexOf('あい', 1)).toBe(5);
+            expect('あいabcあいabc'.indexOf('あい', 6)).toBe(-1);
+        });
     });
 
     describe('#lastIndexOf()', function () {
-      it('has the right length', function () {
-          expect(String.prototype.lastIndexOf.length).toBe(1);
-      });
+        it('has the right length', function () {
+            expect(String.prototype.lastIndexOf.length).toBe(1);
+        });
 
-      it('has basic support', function () {
-          expect('abcd'.lastIndexOf('d')).toBe(3);
-          expect('abcd'.lastIndexOf('d', 3)).toBe(3);
-          expect('abcd'.lastIndexOf('d', 2)).toBe(-1);
-      });
+        it('has basic support', function () {
+            expect('abcd'.lastIndexOf('d')).toBe(3);
+            expect('abcd'.lastIndexOf('d', 3)).toBe(3);
+            expect('abcd'.lastIndexOf('d', 2)).toBe(-1);
+        });
 
-      it('works with unicode', function () {
-          expect('abcあい'.lastIndexOf('あい')).toBe(3);
-          expect('abcあい'.lastIndexOf('あい', 3)).toBe(3);
-          expect('abcあい'.lastIndexOf('あい', 2)).toBe(-1);
-      });
+        it('works with unicode', function () {
+            expect('abcあい'.lastIndexOf('あい')).toBe(3);
+            expect('abcあい'.lastIndexOf('あい', 3)).toBe(3);
+            expect('abcあい'.lastIndexOf('あい', 2)).toBe(-1);
+        });
     });
 });

-- 
Alioth's /usr/local/bin/git-commit-notice on /srv/git.debian.org/git/pkg-javascript/node-es5-shim.git



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