Run results for: groupby comparisons

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser: Chrome 123

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Vanilla Reduce	3105965.8 Ops/sec
Native groupBy	1416976.6 Ops/sec
ramda	831218.4 Ops/sec
lodash	1954673.9 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.29.1/ramda.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>

Script Preparation code:

var dag = {
    nodes: [{
        id: '1'
    }, {
        id: '2'
    }, {
        id: '3'
    }, {
        id: '4'
    }],
    links: [{
            fromId: '1',
            fromPort: 'Output',
            toId: '2',
            toPort: 'Input'
        },
        {
            fromId: '1',
            fromPort: 'Output',
            toId: '3',
            toPort: 'Input'
        },
        {
            fromId: '2',
            fromPort: 'Output',
            toId: '4',
            toPort: 'Input'
        },
        {
            fromId: '3',
            fromPort: 'Output',
            toId: '4',
            toPort: 'Input'
        },
    ]
}

Tests:

Vanilla Reduce
var incomingLinksById = dag.links.reduce((acc, link) => { if (!acc[link.toId]) { acc[link.toId] = [link]; } else { acc[link.toId].push(link); } return acc; }, {});
Native groupBy
var incomingLinksById = Object.groupBy(dag.links, l => l.toId);
ramda
var incomingLinksById = R.groupBy(l => l.toId, dag.links)
lodash
var incomingLinksById = _.groupBy(dag.links, l => l.toId)

Run results for: groupby comparisons

Vanilla Reduce

Native groupBy

ramda

lodash