graphite.min.js

const Graphite={set:function(key,value){localStorage.setItem(key,JSON.stringify(value));const event=new CustomEvent('GraphiteStorageEvent',{detail:{key,value}});window.dispatchEvent(event)},get:function(key,callback){const value=JSON.parse(localStorage.getItem(key));callback&&callback(value)},push:function(key,...values){const array=this.get(key);if(Array.isArray(array)){array.push(...values);this.set(key,array);return array}return null},pull:function(key,...values){const array=this.get(key);if(Array.isArray(array)){const newArray=array.filter(item=>!values.includes(item));this.set(key,newArray);return newArray}return null},has:function(key,value){const array=this.get(key);if(Array.isArray(array)){return array.includes(value)}return false},delete:function(key){const value=this.get(key);localStorage.removeItem(key);return value},add:function(key,amount){const value=this.get(key);if(typeof value==='number'){const newValue=value+amount;this.set(key,newValue);return newValue}return null},sub:function(key,amount){const value=this.get(key);if(typeof value==='number'){const newValue=value-amount;this.set(key,newValue);return newValue}return null}};window.addEventListener('GraphiteStorageEvent',function(event){const{key,value}=event.detail;localStorage.setItem(key,JSON.stringify(value))});window.Graphite=Graphite;