Run results for: uniqBy vs Set

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36

Browser: Chrome 149

Operating system: Windows

Device Platform: Desktop

Date tested: 8 days ago

Test name	Executions per second
uniqBy	23089.5 Ops/sec
Set	35815.9 Ops/sec

HTML Preparation code:

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

Script Preparation code:

var files = [];

for (i = 0; i < 1000; i++) {
    files.push({
        documentId: i,
        documentVersionId: i + 1
    });
}

var filesToAdd = [];

for (i = 0; i < 50; i++) {
    filesToAdd.push({
        documentId: i * 2,
        documentVersionId: i + i * 3
    });
}

Tests:

uniqBy
const uniqueDocs = _.uniqBy([...files, ...filesToAdd], 'documentVersionId'); console.log(uniqueDocs.length);
Set
const uniqueDocs = new Set([...files, ...filesToAdd]); console.log(uniqueDocs.size);