Benchmark: Lodash uniq vs Object unique keys vs Set

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:


var arr = ['Jane', 'Bob', 'Kat', 'Kat', 'Bob', 'Jane', 'Ian', 'Jane', 'Bob', 'Kat', 'Kat', 'Bob', 'Jane', 'Ian'];

Array.prototype.uniqueString = function() {
    let tmpObj = {}
    for (var i = 0; i < this.length; i++) {
        tmpObj[this[i]] = this[i]
    }
    return Object.values(tmpObj)
}

Tests:

Lodash uniq
_.uniq(arr);
Object unique key
arr.uniqueString();
Set
new Set(arr)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash uniq
Object unique key
Set

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36

Browser/OS: Chrome 113 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Lodash uniq	5225032.0 Ops/sec
Object unique key	3995086.0 Ops/sec
Set	4332971.0 Ops/sec

Lodash uniq vs Object unique keys vs Set (version: 0)

Comparing performance of: Lodash uniq vs Object unique key vs Set

Created: one year ago by: Registered User

Jump to the latest result

Lodash uniq

Object unique key

Set

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A