From 891d4f185e4a39a04f608122039933ca26c93403 Mon Sep 17 00:00:00 2001
From: Joshua Bell <inexorabletash@gmail.com>
Date: Sun, 2 Oct 2016 19:51:26 -0700
Subject: [PATCH] Add ECMAScript 2016 file, include in polyfill.js

---
 README.md                               |   8 +-
 bower.json                              |   3 +-
 demos/keyboard.html                     |   4 +-
 es2016.js                               | 128 ++++++++++++++++++++++++
 es2016.md                               |  10 ++
 experimental/es-proposed.js             |  28 ------
 experimental/es-proposed.md             |   4 -
 experimental/tests/es-proposed.html     |   1 +
 experimental/tests/es-proposed_tests.js |  20 ----
 package.json                            |   4 +-
 polyfill.js                             | 128 ++++++++++++++++++++++++
 polyfill.min.js                         |   6 +-
 tests/es2016.html                       |  22 ++++
 tests/es2016_tests.js                   |  21 ++++
 14 files changed, 324 insertions(+), 63 deletions(-)
 create mode 100644 es2016.js
 create mode 100644 es2016.md
 create mode 100644 tests/es2016.html
 create mode 100644 tests/es2016_tests.js

diff --git a/README.md b/README.md
index 34634f0..179798d 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ Since I generally use several in my hobby projects, bundled/minified versions ar
 
 * [web.js](web.js) (minified: [web.min.js](web.min.js)) includes the most common Web polyfills - it assumes ES2015 support
   * Includes: [html.js](html.js) [dom.js](dom.js) [xhr.js](xhr.js) [cssom.js](cssom.js) [timing.js](timing.js) [url.js](url.js) [fetch.js](fetch.js)
-* [polyfill.js](polyfill.js) (minified: [polyfill.min.js](polyfill.min.js)) has everything in [web.js](web.js) plus [es5.js](es5.js) and [es6.js](es6.js)
+* [polyfill.js](polyfill.js) (minified: [polyfill.min.js](polyfill.min.js)) has everything in [web.js](web.js) plus [es5.js](es5.js) and [es6.js](es6.js) and [es2016.js](es2016.js)
 
 Minification is done via https://github.com/mishoo/UglifyJS2
 
@@ -44,9 +44,11 @@ Minification is done via https://github.com/mishoo/UglifyJS2
 ECMAScript / JavaScript Polyfills
 ---------------------------------
 
-[ECMAScript 5](es5.md) - Previous standard, supported by all modern browsers. Frozen.
+[ECMAScript 5](es5.md) - Previous standard, supported by browsers circa 2012..
 
-[ECMAScript 2015](es6.md) - Most recent standard. Not fully supported by modern browsers yet.
+[ECMAScript 2015](es6.md) - Previous standard, supported by browsers circa 2016.
+
+[ECMAScript 2016](es2016.md) - Most recent standard. Not fully supported by modern browsers yet.
 
 [ECMAScript proposed](experimental/es-proposed.md) - Proposals for future editions of the standard. Here there be dragons.
 
diff --git a/bower.json b/bower.json
index 6726144..727586d 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "js-polyfills",
-  "version": "0.1.26",
+  "version": "0.1.27",
   "homepage": "https://github.com/inexorabletash/polyfill",
   "authors": [
     "Joshua Bell <inexorabletash@gmail.com>"
@@ -10,6 +10,7 @@
   "main": [
     "es5.js",
     "es6.js",
+    "es2016.js",
     "html.js",
     "dom.js",
     "xhr.js",
diff --git a/demos/keyboard.html b/demos/keyboard.html
index 3dac398..5bbe1c7 100644
--- a/demos/keyboard.html
+++ b/demos/keyboard.html
@@ -2,9 +2,7 @@
 <title>Keyboard Event Polyfill Demo</title>
 <meta charset="UTF-8">
 
-<script type="text/javascript" src="../es5.js"></script>
-<script type="text/javascript" src="../es6.js"></script>
-<script type="text/javascript" src="../web.js"></script>
+<script type="text/javascript" src="../polyfill.js"></script>
 <script type="text/javascript" src="../keyboard.js"></script>
 
 <style>
diff --git a/es2016.js b/es2016.js
new file mode 100644
index 0000000..6c67a0f
--- /dev/null
+++ b/es2016.js
@@ -0,0 +1,128 @@
+//----------------------------------------------------------------------
+//
+// ECMAScript 2016 Polyfills
+//
+//----------------------------------------------------------------------
+
+(function (global) {
+  "use strict";
+  var undefined = (void 0); // Paranoia
+
+  // Helpers
+
+  function assert(c, m) {
+    if (!c) throw Error("Internal assertion failure" + (m ? ': ' + m : ''));
+  }
+
+  function define(o, p, v, override) {
+    if (p in o && !override)
+      return;
+
+    if (typeof v === 'function') {
+      // Sanity check that functions are appropriately named (where possible)
+      assert((global.Symbol && p instanceof global.Symbol) || !('name' in v) || v.name === p || v.name === p + '_', 'Expected function name "' + p + '", was "' + v.name + '"');
+      Object.defineProperty(o, p, {
+        value: v,
+        configurable: true,
+        enumerable: false,
+        writable: true
+      });
+    } else {
+      Object.defineProperty(o, p, {
+        value: v,
+        configurable: false,
+        enumerable: false,
+        writable: false
+      });
+    }
+  }
+
+
+  // Snapshot intrinsic functions
+  var $isNaN = global.isNaN;
+
+  var abs = Math.abs,
+      floor = Math.floor,
+      max = Math.max,
+      min = Math.min;
+
+  //----------------------------------------
+  // 7 Abstract Operations
+  //----------------------------------------
+
+  // 7.1.4
+  function ToInteger(n) {
+    n = Number(n);
+    if ($isNaN(n)) return 0;
+    if (n === 0 || n === Infinity || n === -Infinity) return n;
+    return ((n < 0) ? -1 : 1) * floor(abs(n));
+  }
+
+  // 7.1.13 ToObject
+  function ToObject(v) {
+    if (v === null || v === undefined) throw TypeError();
+    return Object(v);
+  }
+
+  // 7.1.15 ToLength ( argument )
+  function ToLength(v) {
+    var len = ToInteger(v);
+    if (len <= 0) {
+      return 0;
+    }
+    return min(len, 0x20000000000000 - 1); // 2^53-1
+  }
+
+  //----------------------------------------
+  // 7.2 Testing and Comparison Operations
+  //----------------------------------------
+
+  // 7.2.10 SameValueZero(x, y)
+  function SameValueZero(x, y) {
+    if (typeof x !== typeof y) return false;
+    switch (typeof x) {
+    case 'undefined':
+      return true;
+    case 'number':
+      if (x !== x && y !== y) return true;
+      return x === y;
+    case 'boolean':
+    case 'string':
+    case 'object':
+    default:
+      return x === y;
+    }
+  }
+
+  //----------------------------------------------------------------------
+  //
+  // ECMAScript 2016
+  //
+  //----------------------------------------------------------------------
+
+  // https://github.com/tc39/Array.prototype.includes/
+  define(
+    Array.prototype, 'includes',
+    function includes(target) {
+      var fromIndex = arguments[1];
+
+      var o = ToObject(this);
+      var len = ToLength(o["length"]);
+      if (len === 0) return false;
+      var n = ToInteger(fromIndex);
+      if (n >= 0) {
+        var k = n;
+      } else {
+        k = len + n;
+        if (k < 0) k = 0;
+      }
+      while (k < len) {
+        var elementK = o[k];
+        if (SameValueZero(o[k], target))
+          return true;
+        k += 1;
+      }
+      return false;
+    });
+
+}(this));
diff --git a/es2016.md b/es2016.md
new file mode 100644
index 0000000..06a9043
--- /dev/null
+++ b/es2016.md
@@ -0,0 +1,10 @@
+# ECMAScript 2016 Polyfill
+
+[script](es2016.js) -
+[unit tests](https://inexorabletash.github.io/polyfill/tests/es2016.html)
+
+This assumes ES6, so use [es5.js](es5.js) and [es6.js](es6.js) for older browsers (IE9-).
+
+[ECMAScript 2016 Standard](http://www.ecma-international.org/ecma-262/7.0/)
+
+* `Array.prototype.includes()` [ref](http://www.ecma-international.org/ecma-262/7.0/index.html#sec-array.prototype.includes)
diff --git a/experimental/es-proposed.js b/experimental/es-proposed.js
index f646e0f..e0aea28 100644
--- a/experimental/es-proposed.js
+++ b/experimental/es-proposed.js
@@ -248,34 +248,6 @@
       return;
     });
 
-  // https://github.com/tc39/Array.prototype.includes/
-  define(
-    Array.prototype, 'includes',
-    function includes(target) {
-      var fromIndex = arguments[1];
-
-      var o = ToObject(this);
-      var lenValue = o["length"];
-      var len = ToLength(lenValue);
-      if (len === 0) return false;
-      var n = (fromIndex !== undefined) ? ToInteger(fromIndex) : 0;
-      if (n >= len) return false;
-      if (n >= 0) {
-        var k = n;
-      } else {
-        k = len - abs(n);
-        if (k < 0) k = 0;
-      }
-      while (k < len) {
-        // eval('0 in [undefined]') == false in IE8-
-        if (/*i in t &&*/ SameValue(o[k], target)) {
-          return true;
-        }
-        k += 1;
-      }
-      return false;
-    });
-
   // https://github.com/ljharb/proposal-object-values-entries
   define(
     Object, 'values',
diff --git a/experimental/es-proposed.md b/experimental/es-proposed.md
index cf03c54..a28bf48 100644
--- a/experimental/es-proposed.md
+++ b/experimental/es-proposed.md
@@ -5,10 +5,6 @@ Per https://github.com/tc39/ecma262
 [script](es-proposed.js) -
 [unit tests](https://inexorabletash.github.io/polyfill/experimental/tests/es-proposed.html)
 
-#### In ECMAScript 2016
-
-* `Array.prototype.includes()` [ref](https://github.com/domenic/Array.prototype.contains/)
-
 #### Stage 4 (In drafts for ECMAScript 2017)
 
 * Object iterators: `Object.values()`, `Object.entries()` [ref](https://github.com/ljharb/proposal-object-values-entries)
diff --git a/experimental/tests/es-proposed.html b/experimental/tests/es-proposed.html
index 0d75ae2..2d5ab85 100644
--- a/experimental/tests/es-proposed.html
+++ b/experimental/tests/es-proposed.html
@@ -16,6 +16,7 @@ <h2 id="qunit-userAgent"></h2>
 <script src="../../es5.js"></script>
 <script src="../../typedarray.js"></script>
 <script src="../../es6.js"></script>
+<script src="../../es2016.js"></script>
 <script src="../es-proposed.js"></script>
 
 <script src="../../tests/testhelpers.js"></script>
diff --git a/experimental/tests/es-proposed_tests.js b/experimental/tests/es-proposed_tests.js
index 5d0c77f..6273d26 100644
--- a/experimental/tests/es-proposed_tests.js
+++ b/experimental/tests/es-proposed_tests.js
@@ -20,26 +20,6 @@ test("Proposed Array extras", function () {
   a = [1,2]; a.pushAll([]); deepEqual(a, [1,2]);
   a = []; a.pushAll([1,2]); deepEqual(a, [1,2]);
   a = [1,2]; a.pushAll([1,2]); deepEqual(a, [1,2,1,2]);
-
-  assertTrue("'includes' in Array.prototype");
-  assertEqual("typeof Array.prototype.includes", 'function');
-  assertTrue("[1,2,3].includes(1)");
-  assertFalse("[1,2,3].includes(0)");
-  assertTrue("[1,NaN,3].includes(NaN)");
-  assertFalse("[1,2,3].includes(NaN)");
-  assertTrue("[1,-0,3].includes(-0)");
-  assertFalse("[1,-0,3].includes(0)");
-  assertFalse("[1,[],3].includes([])");
-  assertFalse("[1,{},3].includes({})");
-  assertFalse("[1,2,3].includes(Math)");
-  assertTrue("[1,Math,3].includes(Math)");
-  assertFalse("[1,2,3].includes(undefined)");
-  assertTrue("[1,undefined,3].includes(undefined)");
-  assertFalse("[1,2,3].includes(null)");
-  assertTrue("[1,null,3].includes(null)");
-
-  assertTrue("[1,2,3].includes(3, 2)");
-  assertFalse("[1,2,3].includes(2, 2)");
 });
 
 test("Proposed Object Extras", function() {
diff --git a/package.json b/package.json
index 2cc1218..fd9d25a 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "js-polyfills",
   "author": "Joshua Bell <inexorabletash@gmail.com>",
-  "version": "0.1.26",
+  "version": "0.1.27",
   "description": "Collection of Web polyfills.",
   "license": "Unlicense",
   "main": "polyfill.js",
@@ -16,6 +16,8 @@
     "es5.js",
     "es6.md",
     "es6.js",
+    "es2016.md",
+    "es2016.js",
     "html.js",
     "dom.js",
     "xhr.js",
diff --git a/polyfill.js b/polyfill.js
index 67a14e5..32cee04 100644
--- a/polyfill.js
+++ b/polyfill.js
@@ -4273,6 +4273,134 @@ if (!Date.prototype.toISOString) {
 function __cons(t, a) {
   return eval('new t(' + a.map(function(_, i) { return 'a[' + i + ']'; }).join(',') + ')');
 }
+//----------------------------------------------------------------------
+//
+// ECMAScript 2016 Polyfills
+//
+//----------------------------------------------------------------------
+
+(function (global) {
+  "use strict";
+  var undefined = (void 0); // Paranoia
+
+  // Helpers
+
+  function assert(c, m) {
+    if (!c) throw Error("Internal assertion failure" + (m ? ': ' + m : ''));
+  }
+
+  function define(o, p, v, override) {
+    if (p in o && !override)
+      return;
+
+    if (typeof v === 'function') {
+      // Sanity check that functions are appropriately named (where possible)
+      assert((global.Symbol && p instanceof global.Symbol) || !('name' in v) || v.name === p || v.name === p + '_', 'Expected function name "' + p + '", was "' + v.name + '"');
+      Object.defineProperty(o, p, {
+        value: v,
+        configurable: true,
+        enumerable: false,
+        writable: true
+      });
+    } else {
+      Object.defineProperty(o, p, {
+        value: v,
+        configurable: false,
+        enumerable: false,
+        writable: false
+      });
+    }
+  }
+
+
+  // Snapshot intrinsic functions
+  var $isNaN = global.isNaN;
+
+  var abs = Math.abs,
+      floor = Math.floor,
+      max = Math.max,
+      min = Math.min;
+
+  //----------------------------------------
+  // 7 Abstract Operations
+  //----------------------------------------
+
+  // 7.1.4
+  function ToInteger(n) {
+    n = Number(n);
+    if ($isNaN(n)) return 0;
+    if (n === 0 || n === Infinity || n === -Infinity) return n;
+    return ((n < 0) ? -1 : 1) * floor(abs(n));
+  }
+
+  // 7.1.13 ToObject
+  function ToObject(v) {
+    if (v === null || v === undefined) throw TypeError();
+    return Object(v);
+  }
+
+  // 7.1.15 ToLength ( argument )
+  function ToLength(v) {
+    var len = ToInteger(v);
+    if (len <= 0) {
+      return 0;
+    }
+    return min(len, 0x20000000000000 - 1); // 2^53-1
+  }
+
+  //----------------------------------------
+  // 7.2 Testing and Comparison Operations
+  //----------------------------------------
+
+  // 7.2.10 SameValueZero(x, y)
+  function SameValueZero(x, y) {
+    if (typeof x !== typeof y) return false;
+    switch (typeof x) {
+    case 'undefined':
+      return true;
+    case 'number':
+      if (x !== x && y !== y) return true;
+      return x === y;
+    case 'boolean':
+    case 'string':
+    case 'object':
+    default:
+      return x === y;
+    }
+  }
+
+  //----------------------------------------------------------------------
+  //
+  // ECMAScript 2016
+  //
+  //----------------------------------------------------------------------
+
+  // https://github.com/tc39/Array.prototype.includes/
+  define(
+    Array.prototype, 'includes',
+    function includes(target) {
+      var fromIndex = arguments[1];
+
+      var o = ToObject(this);
+      var len = ToLength(o["length"]);
+      if (len === 0) return false;
+      var n = ToInteger(fromIndex);
+      if (n >= 0) {
+        var k = n;
+      } else {
+        k = len + n;
+        if (k < 0) k = 0;
+      }
+      while (k < len) {
+        var elementK = o[k];
+        if (SameValueZero(o[k], target))
+          return true;
+        k += 1;
+      }
+      return false;
+    });
+
+}(this));
 (function(global) {
   if (!('window' in global && 'document' in global))
     return;
diff --git a/polyfill.min.js b/polyfill.min.js
index edad184..f8fa2aa 100644
--- a/polyfill.min.js
+++ b/polyfill.min.js
@@ -1,3 +1,3 @@
-function __cons(t,a){return eval("new t("+a.map(function(e,t){return"a["+t+"]"}).join(",")+")")}Object.getPrototypeOf||(Object.getPrototypeOf=function(e){if(e!==Object(e))throw TypeError("Object.getPrototypeOf called on non-object");return e.__proto__||e.constructor.prototype||Object.prototype}),"function"!=typeof Object.getOwnPropertyNames&&(Object.getOwnPropertyNames=function(e){if(e!==Object(e))throw TypeError("Object.getOwnPropertyNames called on non-object");var t,r=[];for(t in e)Object.prototype.hasOwnProperty.call(e,t)&&r.push(t);return r}),"function"!=typeof Object.create&&(Object.create=function(e,t){function r(){}if("object"!=typeof e)throw TypeError();r.prototype=e;var n=new r;if(e&&(n.constructor=r),void 0!==t){if(t!==Object(t))throw TypeError();Object.defineProperties(n,t)}return n}),function(){if(!Object.defineProperty||!function(){try{return Object.defineProperty({},"x",{}),!0}catch(e){return!1}}()){var e=Object.defineProperty;Object.defineProperty=function(t,r,n){if(e)try{return e(t,r,n)}catch(o){}if(t!==Object(t))throw TypeError("Object.defineProperty called on non-object");return Object.prototype.__defineGetter__&&"get"in n&&Object.prototype.__defineGetter__.call(t,r,n.get),Object.prototype.__defineSetter__&&"set"in n&&Object.prototype.__defineSetter__.call(t,r,n.set),"value"in n&&(t[r]=n.value),t}}}(),"function"!=typeof Object.defineProperties&&(Object.defineProperties=function(e,t){if(e!==Object(e))throw TypeError("Object.defineProperties called on non-object");var r;for(r in t)Object.prototype.hasOwnProperty.call(t,r)&&Object.defineProperty(e,r,t[r]);return e}),Object.keys||(Object.keys=function(e){if(e!==Object(e))throw TypeError("Object.keys called on non-object");var t,r=[];for(t in e)Object.prototype.hasOwnProperty.call(e,t)&&r.push(t);return r}),Function.prototype.bind||(Function.prototype.bind=function(e){if("function"!=typeof this)throw TypeError("Bind must be called on a function");var t=Array.prototype.slice.call(arguments,1),r=this,n=function(){},o=function(){return r.apply(this instanceof n?this:e,t.concat(Array.prototype.slice.call(arguments)))};return this.prototype&&(n.prototype=this.prototype),o.prototype=new n,o}),Array.isArray=Array.isArray||function(e){return Boolean(e&&"[object Array]"===Object.prototype.toString.call(Object(e)))},Array.prototype.indexOf||(Array.prototype.indexOf=function(e){if(void 0===this||null===this)throw TypeError();var t=Object(this),r=t.length>>>0;if(0===r)return-1;var n=0;if(arguments.length>0&&(n=Number(arguments[1]),isNaN(n)?n=0:0!==n&&n!==1/0&&n!==-(1/0)&&(n=(n>0||-1)*Math.floor(Math.abs(n)))),n>=r)return-1;for(var o=n>=0?n:Math.max(r-Math.abs(n),0);r>o;o++)if(o in t&&t[o]===e)return o;return-1}),Array.prototype.lastIndexOf||(Array.prototype.lastIndexOf=function(e){if(void 0===this||null===this)throw TypeError();var t=Object(this),r=t.length>>>0;if(0===r)return-1;var n=r;arguments.length>1&&(n=Number(arguments[1]),n!==n?n=0:0!==n&&n!==1/0&&n!==-(1/0)&&(n=(n>0||-1)*Math.floor(Math.abs(n))));for(var o=n>=0?Math.min(n,r-1):r-Math.abs(n);o>=0;o--)if(o in t&&t[o]===e)return o;return-1}),Array.prototype.every||(Array.prototype.every=function(e){if(void 0===this||null===this)throw TypeError();var t=Object(this),r=t.length>>>0;if("function"!=typeof e)throw TypeError();var n,o=arguments[1];for(n=0;r>n;n++)if(n in t&&!e.call(o,t[n],n,t))return!1;return!0}),Array.prototype.some||(Array.prototype.some=function(e){if(void 0===this||null===this)throw TypeError();var t=Object(this),r=t.length>>>0;if("function"!=typeof e)throw TypeError();var n,o=arguments[1];for(n=0;r>n;n++)if(n in t&&e.call(o,t[n],n,t))return!0;return!1}),Array.prototype.forEach||(Array.prototype.forEach=function(e){if(void 0===this||null===this)throw TypeError();var t=Object(this),r=t.length>>>0;if("function"!=typeof e)throw TypeError();var n,o=arguments[1];for(n=0;r>n;n++)n in t&&e.call(o,t[n],n,t)}),Array.prototype.map||(Array.prototype.map=function(e){if(void 0===this||null===this)throw TypeError();var t=Object(this),r=t.length>>>0;if("function"!=typeof e)throw TypeError();var n=[];n.length=r;var o,i=arguments[1];for(o=0;r>o;o++)o in t&&(n[o]=e.call(i,t[o],o,t));return n}),Array.prototype.filter||(Array.prototype.filter=function(e){if(void 0===this||null===this)throw TypeError();var t=Object(this),r=t.length>>>0;if("function"!=typeof e)throw TypeError();var n,o=[],i=arguments[1];for(n=0;r>n;n++)if(n in t){var a=t[n];e.call(i,a,n,t)&&o.push(a)}return o}),Array.prototype.reduce||(Array.prototype.reduce=function(e){if(void 0===this||null===this)throw TypeError();var t=Object(this),r=t.length>>>0;if("function"!=typeof e)throw TypeError();if(0===r&&1===arguments.length)throw TypeError();var n,o=0;if(arguments.length>=2)n=arguments[1];else for(;;){if(o in t){n=t[o++];break}if(++o>=r)throw TypeError()}for(;r>o;)o in t&&(n=e.call(void 0,n,t[o],o,t)),o++;return 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Blob?Promise.resolve(this._stream):Promise.resolve(new Blob([this._stream])))},formData:function(){return this.bodyUsed?Promise.reject(TypeError()):(this.bodyUsed=!0,this._stream instanceof FormData?Promise.resolve(this._stream):Promise.reject(Error("Not yet implemented")))},json:function(){if(this.bodyUsed)return Promise.reject(TypeError());this.bodyUsed=!0;var e=this;return new Promise(function(t,r){t(JSON.parse(e._stream))})},text:function(){return this.bodyUsed?Promise.reject(TypeError()):(this.bodyUsed=!0,Promise.resolve(String(this._stream)))}},v.prototype=d.prototype,m.prototype=d.prototype,m.redirect=function(){throw Error("Not supported")},"fetch"in e||(e.Headers=h,e.Request=v,e.Response=m,e.fetch=b)}(self);
diff --git a/tests/es2016.html b/tests/es2016.html
new file mode 100644
index 0000000..1120b5f
--- /dev/null
+++ b/tests/es2016.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<title>ECMAScript 2016 Polyfill Unit Tests</title>
+<meta charset="UTF-8">
+
+<script src="https://code.jquery.com/qunit/qunit-1.21.0.js"></script>
+<link rel="stylesheet" href="https://code.jquery.com/qunit/qunit-1.21.0.css">
+
+<h1 id="qunit-header">ECMAScript Proposals Polyfill Unit Tests</h1>
+<h2 id="qunit-banner"></h2>
+<div id="qunit-testrunner-toolbar"></div>
+<h2 id="qunit-userAgent"></h2>
+<ol id="qunit-tests"></ol>
+<div id="qunit-fixture">test markup, will be hidden</div>
+
+<script src="https://cdnjs.cloudflare.com/ajax/libs/json2/20130526/json2.js"></script>
+<script src="../es5.js"></script>
+<script src="../typedarray.js"></script>
+<script src="../es6.js"></script>
+<script src="../es2016.js"></script>
+
+<script src="testhelpers.js"></script>
+<script src="es2016_tests.js"></script>
diff --git a/tests/es2016_tests.js b/tests/es2016_tests.js
new file mode 100644
index 0000000..85cd98c
--- /dev/null
+++ b/tests/es2016_tests.js
@@ -0,0 +1,21 @@
+test("Array.prototype.includes", function () {
+  assertTrue("'includes' in Array.prototype");
+  assertEqual("typeof Array.prototype.includes", 'function');
+  assertTrue("[1,2,3].includes(1)");
+  assertFalse("[1,2,3].includes(0)");
+  assertTrue("[1,NaN,3].includes(NaN)");
+  assertFalse("[1,2,3].includes(NaN)");
+  assertTrue("[1,-0,3].includes(-0)");
+  assertTrue("[1,-0,3].includes(0)");
+  assertFalse("[1,[],3].includes([])");
+  assertFalse("[1,{},3].includes({})");
+  assertFalse("[1,2,3].includes(Math)");
+  assertTrue("[1,Math,3].includes(Math)");
+  assertFalse("[1,2,3].includes(undefined)");
+  assertTrue("[1,undefined,3].includes(undefined)");
+  assertFalse("[1,2,3].includes(null)");
+  assertTrue("[1,null,3].includes(null)");
+
+  assertTrue("[1,2,3].includes(3, 2)");
+  assertFalse("[1,2,3].includes(2, 2)");
+});