filter duplicate using map and filter in typescript

1var arrOfObj = [
2  {
3    id:1 ,name:'abc',age:27
4  },
5  {
6    id:2 ,name:'pqr',age:27
7  },
8  {
9    id:1 ,name:'abc',age:27
10  },
11 ]
12
13var setObj = new Set(); // create key value pair from array of array
14
15var result = arrOfObj.reduce((acc,item)=>{
16  if(!setObj.has(item.age)){
17    setObj.add(item.age)
18    acc.push(item)
19  }
20  return acc;
21},[]);//converting back to array from mapobject
22
23console.log(result);