Run results for: unique objects in array by value using filter

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36

Browser: Chrome 78

Operating system: Mac OS X 10.14.5

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
_.uniqBy	1259674.0 Ops/sec
Set	538120.0 Ops/sec
findIndex	3976491.0 Ops/sec
reduce	729870.8 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 analysisAuthors = [{"studyField":"novel","authorName":"Apollinaire"},{"studyField":"novel","authorName":"Apollinaire"},{"studyField":"novel","authorName":"Apollinaire"},{"studyField":"novel","authorName":"Apollinaire"},{"studyField":"novel","authorName":"Apollinaire"},{"studyField":"novel","authorName":"Apollinaire"},{"studyField":"novel","authorName":"De Lafayette"},{"studyField":"novel","authorName":"Beckett"},{"studyField":"novel","authorName":"Montesquieu"},{"studyField":"novel","authorName":"Yourcenar"}]

Tests:

_.uniqBy
_.uniqBy(analysisAuthors, "authorName")
Set
Array.from(new Set(analysisAuthors.map(a => a.authorName))) .map(authorName => { return analysisAuthors.find(a => a.authorName === authorName) })
findIndex
analysisAuthors.filter((author, index, authorsList) => authorsList .findIndex(authorInList => authorInList.authorName === author.authorName) === index)
reduce
analysisAuthors.reduce((acc, current) => { const x = acc.find(item => item.authorName === current.authorName); if (!x) { return acc.concat([current]); } else { return acc; } }, [])

Run results for: unique objects in array by value using filter

_.uniqBy

Set

findIndex

reduce