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filter duplicate using map and filter in typescript

By Defiant DugongDefiant Dugong on Apr 21, 2021 
var arrOfObj = [
  {
    id:1 ,name:'abc',age:27
  },
  {
    id:2 ,name:'pqr',age:27
  },
  {
    id:1 ,name:'abc',age:27
  },
 ]

var setObj = new Set(); // create key value pair from array of array

var result = arrOfObj.reduce((acc,item)=>{
  if(!setObj.has(item.age)){
    setObj.add(item.age)
    acc.push(item)
  }
  return acc;
},[]);//converting back to array from mapobject

console.log(result);

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