fix(util): remove extend

2 files changed, 28 insertions, 1 deletions

diff --git a/js/src/dom/eventHandler.js b/js/src/dom/eventHandler.js
index 25248fb92..95bafe4ed 100644
--- a/js/src/dom/eventHandler.js
+++ b/js/src/dom/eventHandler.js
@@ -281,7 +281,7 @@ const EventHandler = (() => {
 
       // merge custom informations in our event
       if (typeof args !== 'undefined') {
-        evt = Util.extend(evt, args)
+        evt = Object.assign(evt, args)
       }
 
       if (defaultPrevented) {
diff --git a/js/src/dom/polyfill.js b/js/src/dom/polyfill.js
index 159884df8..c0c1139f0 100644
--- a/js/src/dom/polyfill.js
+++ b/js/src/dom/polyfill.js
@@ -155,6 +155,33 @@ const Polyfill = (() => {
     }
   }
 
+  if (typeof Object.assign !== 'function') {
+    Object.defineProperty(Object, 'assign', {
+      value: (target, ...args) => {
+        if (target === null || typeof target === 'undefined') {
+          throw new TypeError('Cannot convert undefined or null to object')
+        }
+
+        const to = Object(target)
+
+        for (let index = 1; index < args.length; index++) {
+          const nextSource = args[index]
+
+          if (nextSource !== null || !nextSource) {
+            for (const nextKey in nextSource) {
+              if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
+                to[nextKey] = nextSource[nextKey]
+              }
+            }
+          }
+        }
+        return to
+      },
+      writable: true,
+      configurable: true
+    })
+  }
+
   return {
     defaultPreventedPreservedOnDispatch,
     focusIn: typeof window.onfocusin === 'undefined',