Run results for: Lodash#uniq + Native v2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.4 Safari/605.1.15

Browser: Safari 16

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
_.uniqWith	1795.3 Ops/sec
Using set	2267.0 Ops/sec
Using Array#includes	904.4 Ops/sec

HTML Preparation code:

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

Script Preparation code:

var list = new Array(10000)
for (let i = 0; i < list.length; ++i) {
    list[i] = { v: Math.ceil(100 * Math.random()) }
}

function getValue(v) {
  return v.v
}

function comparator(v1, v2) {
  return v1.v === v2.v
}

function deduplicateWithSet(l) {
    const s = new Set()
    return l.filter(v => {
      	const vv = getValue(v)
        if (s.has(vv)) return false
        s.add(vv)
        return true
    })
}

function deduplicateWithIncludes(l) {
    const s = []
    return l.filter(v => {
       	const vv = getValue(v)
        if (s.includes(vv)) return false
        s.push(vv)
        return true
    })
}

Tests:

_.uniqWith
return _.uniqWith(list, comparator);
Using set
return deduplicateWithSet(list)
Using Array#includes
return deduplicateWithIncludes(list)

Run results for: Lodash#uniq + Native v2

_.uniqWith

Using set

Using Array#includes