random ST question

.js

let arr = [
  {
    name: 'user',
    age: 1
  },
  {
    name: 'teacher',
    age: 9
  },
  {
    name: 'user',
    age: 2
  },
  {
    name: 'teacher',
    age: 8
  },
  {
    name: 'accountant',
    age: 3
  },
]

let result = [...new Set(arr.map(a => a.name))].map( key => [...arr.filter(c=>c.name === key)]);

console.log(result);