Run results for: unique elements in array comparing 10000 item arrays

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:76.0) Gecko/20100101 Firefox/76.0

Browser: Firefox 76

Operating system: Mac OS X 10.14

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
_.uniq	808.0 Ops/sec
set with spread	907.9 Ops/sec
uniq by filter	8.8 Ops/sec
set with array.from	946.9 Ops/sec

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.js"></script>

Script Preparation code:

var firstEqual = [];
var secondEqual = [];

for (var i=0; i<=10000; i++) {
  firstEqual.push(i);
  secondEqual.push(i);
}

var elements = [...firstEqual, ...secondEqual];

Tests:

_.uniq
_.uniq(elements)
set with spread
[...new Set(elements)]
uniq by filter
elements.filter((v, i, a) => a.indexOf(v) === i)
set with array.from
Array.from(new Set(elements))

Run results for: unique elements in array comparing 10000 item arrays

_.uniq

set with spread

uniq by filter

set with array.from