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Run results for:
ES6 equivalent to lodash _.mapValues
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<iframe src="https://measurethat.net/Embed?id=513151" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; rv:125.0) Gecko/20100101 Firefox/125.0
Browser:
Firefox 125
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
lodash mapValues
4.1M/s
native approach with reduce
120K/s
native approach fromEntries
111K/s
View exact numbers
Test name
Executions per second
✓
lodash mapValues
4,138,296 Ops/sec
native approach with reduce
119,975 Ops/sec
native approach fromEntries
110,817 Ops/sec
HTML Preparation code:
<script src="https://raw.githubusercontent.com/lodash/lodash/4.17.15-npm/core.js"></script>
Tests:
native approach with reduce
var fruits= { 'apple': { 'name': 'apple', 'number': 5}, 'orange': { 'name': 'orange', 'number': 10 } }; console.log(Object.entries(fruits) .reduce((a, [key, { number }]) => { a[key] = number; return a; }, {} ));
native approach fromEntries
var fruits= { 'apple': { 'name': 'apple', 'number': 5}, 'orange': { 'name': 'orange', 'number': 10 } }; console.log(Object.fromEntries( Object.entries(fruits).map(([key, { number }]) => [key, number]) ));
lodash mapValues
var fruits= { 'apple': { 'name': 'apple', 'number': 5}, 'orange': { 'name': 'orange', 'number': 10 } }; _.mapValues(fruits, 'number');