Run results for: KeyBy vs Map 2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36

Browser: Chrome 148

Operating system: Windows

Device Platform: Desktop

Date tested: 2 months ago

Lodash

27K/s

Native

14K/s

View exact numbers

Test name	Executions per second
✓ Lodash	26,952 Ops/sec
Native	13,674 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>

Script Preparation code:

const count = 1000;
const users = Array.from({ length: count }, (_, i) => ({
  id: i + 1,
  value: Math.random().toString(36).substring(2, 9) // 7 random chars
}));

Tests:

Lodash
_.keyBy(users, u => u.id);
Native
new Map(users.map(u => [u.id, u]));