Remove many small, obsolete, old browser hacks

[mirror_novnc.git] / core / util / polyfill.js

diff --git a/core/util/polyfill.js b/core/util/polyfill.js
index c991aa2ed14995938ee221e3e0de7a04650a941a..78715a8ae5ceb1f5a4926139f026367c1a0580bd 100644 (file)
--- a/core/util/polyfill.js
+++ b/core/util/polyfill.js
@@ -1,45 +1,14 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright 2017 Pierre Ossman for noVNC
+ * Copyright (C) 2020 The noVNC Authors
  * Licensed under MPL 2.0 or any later version (see LICENSE.txt)
  */
 
 /* Polyfills to provide new APIs in old browsers */
 
-/* Object.assign() (taken from MDN) */
-if (typeof Object.assign != 'function') {
-    // Must be writable: true, enumerable: false, configurable: true
-    Object.defineProperty(Object, "assign", {
-        value: function assign(target, varArgs) { // .length of function is 2
-            'use strict';
-            if (target == null) { // TypeError if undefined or null
-                throw new TypeError('Cannot convert undefined or null to object');
-            }
-
-            const to = Object(target);
-
-            for (let index = 1; index < arguments.length; index++) {
-                const nextSource = arguments[index];
-
-                if (nextSource != null) { // Skip over if undefined or null
-                    for (let nextKey in nextSource) {
-                        // Avoid bugs when hasOwnProperty is shadowed
-                        if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
-                            to[nextKey] = nextSource[nextKey];
-                        }
-                    }
-                }
-            }
-            return to;
-        },
-        writable: true,
-        configurable: true
-    });
-}
-
 /* CustomEvent constructor (taken from MDN) */
-(function () {
-    function CustomEvent ( event, params ) {
+(() => {
+    function CustomEvent(event, params) {
         params = params || { bubbles: false, cancelable: false, detail: undefined };
         const evt = document.createEvent( 'CustomEvent' );
         evt.initCustomEvent( event, params.bubbles, params.cancelable, params.detail );