Run results for: find by id and replace in array [lodash vs js vs ramda]

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/135.0.7049.83 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 135

Operating system: iOS 18.4.1

Device Platform: Mobile

Date tested: 5 days ago

Test name	Executions per second
lodash map	1420234.2 Ops/sec
es6 map	66652392.0 Ops/sec
lodash findIndex and splice	12012352.0 Ops/sec
ramda findIndex and splice	2161417.8 Ops/sec
ramda map	11404394.0 Ops/sec

HTML Preparation code:

<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/lodash-fp/0.10.4/lodash-fp.min.js"></script>

Script Preparation code:

var arr = [{id: 1, name: "Person 1"}, {id: 2, name: "Person 2"}];

Tests:

lodash map
var newArr = _.map(arr, function(a) { return a.id === 1 ? {id: 1, name: "Person New Name"} : a; });
es6 map
// ES6 var newArr = arr.map(function(a) { return a.id === 1 ? {id: 1, name: "Person New Name"} : a; });
lodash findIndex and splice
var index = _.findIndex(arr, {id: 1}); // Replace item at index using native splice arr.splice(index, 1, {id: 100, name: 'Person New Name'});
ramda findIndex and splice
const index = R.findIndex(R.propEq('id', 1))(arr) arr.splice(index, 1, {id: 100, name: 'Person New Name'});
ramda map
var newArr = R.map(function(a) { return a.id === 1 ? {id: 1, name: "Person New Name"} : a; })(arr);

Run results for: find by id and replace in array [lodash vs js vs ramda]

find by id and replace in array [lodash vs js vs ramda]

lodash map

es6 map

lodash findIndex and splice

ramda findIndex and splice

ramda map