1let obj = {
2 name:"FreeCodeCamp"
3 review:"Awesome"
4};
5Object.freeze(obj);
6obj.review = "bad"; //will be ignored. Mutation not allowed
7obj.newProp = "Test"; // will be ignored. Mutation not allowed
8console.log(obj);
9// { name: "FreeCodeCamp", review:"Awesome"}