Benchmark: Temp test lodash groupby

HTML Preparation code:

<!--your preparation HTML code goes here-->
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js'></script>

Script Preparation code:

const tagIds = [];
for (let i = 0; i <= 10000; i++) {
  tagIds.push({menu_item_data_id: i});
}

Tests:

_.groupBy
const tagIdsByMenuItemId = _.groupBy(tagIds, (tagId) => tagId.menu_item_data_id);
JS groupBy
const tagIdsByMenuItemId = {}; for (const tagId of tagIds) { if (tagIdsByMenuItemId[tagId.menu_item_data_id] === undefined) { tagIdsByMenuItemId[tagId.menu_item_data_id] = []; } tagIdsByMenuItemId[tagId.menu_item_data_id].push(tagId.menu_item_data_id); }

Rendered benchmark preparation results:

Previous results

Test case name	Result
_.groupBy
JS groupBy

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/137.0.0.0 Safari/537.36

Browser/OS: Chrome 137 on Mac OS X 10.15.7

JS groupBy

9K/s

_.groupBy

5K/s

View exact numbers

Test name	Executions per second
✓ JS groupBy	9,216 Ops/sec
_.groupBy	4,971 Ops/sec

Temp test lodash groupby (version: 1)