Add custom UUID function

Author: gjong

src/core/index.js

@@ -86,20 +86,15 @@ const Resolver = {
         }
     },
     uuid: () => {
-        return window.crypto !== undefined ? window.crypto.randomUUID() : '' + Date.now()
+        return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'
+            .replace(/[xy]/g, function (c) {
+                const r = Math.random() * 16 | 0, 
+                    v = c == 'x' ? r : (r & 0x3 | 0x8);
+                return v.toString(16);
+            });
     }
 }
 
-// add the randomUUID option to crypto
-window.crypto.randomUUID = function () {
-    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'
-        .replace(/[xy]/g, function (c) {
-            const r = Math.random() * 16 | 0, 
-                v = c == 'x' ? r : (r & 0x3 | 0x8);
-            return v.toString(16);
-        });
-}
-
 export {
     Attachment,
     When,