From 78ccdc7ac54e3ba0251264b3d1a871f71a161bc0 Mon Sep 17 00:00:00 2001
From: Joshua Bell <inexorabletash@gmail.com>
Date: Fri, 13 Jan 2017 20:02:17 -0800
Subject: [PATCH] DOM: Simplify CustomEvent polyfill

---
 dom.js          |  7 +++----
 polyfill.js     | 16 ++++++++++++++++
 polyfill.min.js |  4 ++--
 web.js          | 16 ++++++++++++++++
 web.min.js      |  2 +-
 5 files changed, 38 insertions(+), 7 deletions(-)

diff --git a/dom.js b/dom.js
index 3d6ce7c..a9c35a5 100644
--- a/dom.js
+++ b/dom.js
@@ -217,16 +217,15 @@
   // https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent/CustomEvent
   // Needed for: IE
   (function () {
-    if ('CustomEvent' in global) {
-      if ( typeof global.CustomEvent === "function" ) return false;
-    }
+    if ('CustomEvent' in global && typeof global.CustomEvent === "function")
+      return;
     function CustomEvent ( event, params ) {
       params = params || { bubbles: false, cancelable: false, detail: undefined };
       var evt = document.createEvent( 'CustomEvent' );
       evt.initCustomEvent( event, params.bubbles, params.cancelable, params.detail );
       return evt;
     }
-    CustomEvent.prototype = window.Event.prototype;
+    CustomEvent.prototype = global.Event.prototype;
     global.CustomEvent = CustomEvent;
   })();
 
diff --git a/polyfill.js b/polyfill.js
index 625b535..178c50e 100644
--- a/polyfill.js
+++ b/polyfill.js
@@ -4800,6 +4800,22 @@ function __cons(t, a) {
     });
   }());
 
+  // CustomEvent
+  // https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent/CustomEvent
+  // Needed for: IE
+  (function () {
+    if ('CustomEvent' in global && typeof global.CustomEvent === "function")
+      return;
+    function CustomEvent ( event, params ) {
+      params = params || { bubbles: false, cancelable: false, detail: undefined };
+      var evt = document.createEvent( 'CustomEvent' );
+      evt.initCustomEvent( event, params.bubbles, params.cancelable, params.detail );
+      return evt;
+    }
+    CustomEvent.prototype = global.Event.prototype;
+    global.CustomEvent = CustomEvent;
+  })();
+
   // Shim for DOM Events for IE7-
   // http://www.quirksmode.org/blog/archives/2005/10/_and_the_winner_1.html
   // Use addEvent(object, event, handler) instead of object.addEventListener(event, handler)
diff --git a/polyfill.min.js b/polyfill.min.js
index 4217024..79b90c3 100644
--- a/polyfill.min.js
+++ b/polyfill.min.js
@@ -1,3 +1,3 @@
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+var e=t.indexOf(":");this.headers.append(t.substring(0,e),t.substring(e+2))},this),void v.call(this,o.responseText)}v.call(this,t),e=Object(e)||{},this.url="";var i="status"in e?n(e.status):200;if(i<200||i>599)throw RangeError();this.status=i,this.ok=200<=this.status&&this.status<=299;var a="statusText"in e?String(e.statusText):"OK";if(/[^\x00-\xFF]/.test(a))throw TypeError();this.statusText=a,"headers"in e&&h(this.headers,e),this.type="basic"}function b(t,e){return new Promise(function(r,n){var o=new d(t,e),i=new XMLHttpRequest,a=!0;i._url=o.url;try{i.open(o.method,o.url,a)}catch(u){throw TypeError(u.message)}for(var c=o.headers[Symbol.iterator](),s=c.next();!s.done;s=c.next())i.setRequestHeader(s.value[0],s.value[1]);"include"===o.credentials&&(i.withCredentials=!0),i.onreadystatechange=function(){i.readyState===XMLHttpRequest.DONE&&(0===i.status?n(new TypeError("Network error")):r(new m(i)))},i.send(o._stream)})}p.prototype={append:function(t,r){if(t=e(t),!u(t)||!c(r))throw TypeError();if("immutable"===this._guard)throw TypeError();"request"===this._guard&&s(t)||("request-no-CORS"!==this._guard||l(t,r))&&("response"===this._guard&&f(t)||(t=t.toLowerCase(),this._headerList.push([t,r])))},"delete":function(t){if(t=e(t),!u(t))throw TypeError();if("immutable"===this._guard)throw TypeError();if(("request"!==this._guard||!s(t))&&("request-no-CORS"!==this._guard||l(t,"invalid"))&&("response"!==this._guard||!f(t))){t=t.toLowerCase();for(var r=0;r<this._headerList.length;)this._headerList[r][0]===t?this._headerList.splice(r,1):++r}},get:function(t){if(t=e(t),!u(t))throw TypeError();t=t.toLowerCase();for(var r=0;r<this._headerList.length;++r)if(this._headerList[r][0]===t)return this._headerList[r][1];return null},getAll:function(t){if(t=e(t),!u(t))throw TypeError();t=t.toLowerCase();for(var r=[],n=0;n<this._headerList.length;++n)this._headerList[n][0]===t&&r.push(this._headerList[n][1]);return r},has:function(t){if(t=e(t),!u(t))throw TypeError();t=t.toLowerCase();for(var r=0;r<this._headerList.length;++r)if(this._headerList[r][0]===t)return!0;return!1},set:function(t,r){if(t=e(t),!u(t)||!c(r))throw TypeError();if("immutable"===this._guard)throw TypeError();if(("request"!==this._guard||!s(t))&&("request-no-CORS"!==this._guard||l(t,r))&&("response"!==this._guard||!f(t))){t=t.toLowerCase();for(var n=0;n<this._headerList.length;++n)if(this._headerList[n][0]===t){for(this._headerList[n++][1]=r;n<this._headerList.length;)this._headerList[n][0]===t?this._headerList.splice(n,1):++n;return}this._headerList.push([t,r])}}},p.prototype[Symbol.iterator]=function(){return new y(this)},y.prototype={},y.prototype.next=function(){return this._index>=this._headers._headerList.length?{value:void 0,done:!0}:{value:this._headers._headerList[this._index++],done:!1}},y.prototype[Symbol.iterator]=function(){return this},v.prototype={arrayBuffer:function(){if(this.bodyUsed)return Promise.reject(TypeError());if(this.bodyUsed=!0,this._stream instanceof ArrayBuffer)return Promise.resolve(this._stream);var t=this._stream;return new Promise(function(e,r){var n=unescape(encodeURIComponent(t)).split("").map(function(t){return t.charCodeAt(0)});e(new Uint8Array(n).buffer)})},blob:function(){return this.bodyUsed?Promise.reject(TypeError()):(this.bodyUsed=!0,this._stream instanceof 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 t=this;return new Promise(function(e,r){e(JSON.parse(t._stream))})},text:function(){return this.bodyUsed?Promise.reject(TypeError()):(this.bodyUsed=!0,Promise.resolve(String(this._stream)))}},d.prototype=v.prototype,m.prototype=v.prototype,m.redirect=function(){throw Error("Not supported")},"fetch"in t||(t.Headers=p,t.Request=d,t.Response=m,t.fetch=b)}(self);
diff --git a/web.js b/web.js
index 1e9cf2b..6d2a5f4 100644
--- a/web.js
+++ b/web.js
@@ -399,6 +399,22 @@
     });
   }());
 
+  // CustomEvent
+  // https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent/CustomEvent
+  // Needed for: IE
+  (function () {
+    if ('CustomEvent' in global && typeof global.CustomEvent === "function")
+      return;
+    function CustomEvent ( event, params ) {
+      params = params || { bubbles: false, cancelable: false, detail: undefined };
+      var evt = document.createEvent( 'CustomEvent' );
+      evt.initCustomEvent( event, params.bubbles, params.cancelable, params.detail );
+      return evt;
+    }
+    CustomEvent.prototype = global.Event.prototype;
+    global.CustomEvent = CustomEvent;
+  })();
+
   // Shim for DOM Events for IE7-
   // http://www.quirksmode.org/blog/archives/2005/10/_and_the_winner_1.html
   // Use addEvent(object, event, handler) instead of object.addEventListener(event, handler)
diff --git a/web.min.js b/web.min.js
index b24fdfc..81063e4 100644
--- a/web.min.js
+++ b/web.min.js
@@ -1 +1 @@
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