refactor for pure functional business logic

public/scripts/util.js

@@ -1,12 +1,3 @@
-export function uuid() {
-  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
-    const r = (Math.random() * 16) | 0,
-      v = c == 'x' ? r : (r & 0x3) | 0x8;
-
-    return v.toString(16);
-  });
-}
-
 /**
  * @param {Date} date
  * @returns {string}