https://rawgit.com/eu81273/jsfiddle-console/master/console.js

by Ialimijoro

HTML

<script src="https://rawgit.com/eu81273/jsfiddle-console/master/console.js"></script>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <script src="i"></script>
</head>
<body>
  
</body>
</html>

JavaScript

let arr = ["arr", "yosh"];

let newState = {...arr}
newState[1] = "hey o";

console.log(arr, newState);