Run results for: set vs lodash uniq vs custom unique 2

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser: Chrome 130

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Lodash uniq

6.4M/s

Custom unique

4.3M/s

Set

4.3M/s

View exact numbers

Test name	Executions per second
✓ Lodash uniq	6,378,788 Ops/sec
Custom unique	4,330,219 Ops/sec
Set	4,296,866 Ops/sec

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js'></script>

Script Preparation code:

function unique(
  array,
  equals = Object.is,
) {
  const result = array.filter(
    (item, index, array) => array.findIndex((a) => equals(a, item)) === index,
  );
  return result.length === array.length ? array : result;
}

Tests:

Set
const l = [1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]; return new Set(l);
Lodash uniq
const l = [1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]; return _.uniq(l);
Custom unique
const l = [1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]; return unique(l);