es6 remove duplicate objects from array with id code example

Example 1: unique array javascript es6 Map

const data = [
  { group: 'A', name: 'SD' }, 
  { group: 'B', name: 'FI' }, 
  { group: 'A', name: 'MM' },
  { group: 'B', name: 'CO'}
];
const unique = [...new Set(data.map(item => item.group))]; // [ 'A', 'B']

Example 2: remove duplicate array es6

let a = [10,20,30,10,30];
let b = [... new Set(a)];
console.log(b);