Run results for: Lodash "uniqWith", " "uniqBy", Node "Map" 2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36 Edg/116.0.1938.69

Browser: Chrome 116

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
uniqWith	2.0 Ops/sec
uniqBy	1428.6 Ops/sec
Node Map	1795.8 Ops/sec

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>

Script Preparation code:

var users = [
  { 'name': 'barney',  'age': 36 },
  { 'name': 'pebbles', 'age': 5 }
];

var newUsers = [
  { 'name': 'fred',    'age': 40 },
  { 'name': 'barney',  'age': 36 },
  { 'name': 'pebbles', 'age': 2 }
];

for(let i = 0; i < 2000; i++) {
  var newUser = { 'name': 'user_' + i, 'age': Math.floor(Math.random() * i) };
  newUsers.push(newUser);
}

Tests:

uniqWith
const unionUsers1 = _.uniqWith(newUsers.concat(users), _.isEqual);
uniqBy
const unionUsers1 = _.uniqBy(newUsers.concat(users), (val) => JSON.stringify(val));
Node Map
const unionUsers1 = Array.from(new Map(newUsers.concat(users).map((user) => ([JSON.stringify(user), user]))).values())

Run results for: Lodash "uniqWith", " "uniqBy", Node "Map" 2

uniqWith

uniqBy

Node Map