Run results for: lodash UniqueWith vs custom filter for duplicates

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/110.0.5481.83 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 110

Operating system: iOS 15.7

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
_.uniqWith	1527052.9 Ops/sec
filter	1725753.1 Ops/sec

Script Preparation code:

var myArray = Array(7000).fill({a:1, b:2});

Tests:

_.uniqWith
myArray = _.uniqWith(myArray, _.isEqual);
filter
const trackObj = {}; myArray = myArray.filter(item => { if (trackObj[item.a] && trackObj[item.a].includes(item.b)) { return false; } trackObj[item.a] = [item.b]; return true; })

Run results for: lodash UniqueWith vs custom filter for duplicates

_.uniqWith

filter