Get diff between two arrays of objects with ES6 or TypeScript -

i have following arrays:

  arr1 = [{       id: 1,       name: 'diego',       age: 23   }, {       id: 2,       name: 'brian',       age: 18   }]    arr2 = [{       id: 1,       name: 'diego',       age: 23   }, {       id: 2,       name: 'brian',       age: 18   }, {       id: 3,       name: 'pikachu',       age: 88   }] 

i need difference between 2 arrays, espected result is:

arr3 [{id:3, name: 'pikachu', age: 88}] 

how solve problem using es6 or typescript?

i tried using set, doesn't worked.

something maybe:

let ids1 = arr1.map(item => item.id); let ids2 = arr2.map(item => item.id);  let diff = ids1.map((id, index) => {         if (ids2.indexof(id) < 0) {             return arr1[index];         }     }).concat(ids2.map((id, index) => {         if (ids1.indexof(id) < 0) {             return arr2[index];         }     })).filter(item => item != undefined); 

(code in playground)