Run results for: lodash UniqueWith vs custom filter for de-duplication

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Browser: Chrome 111

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

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; })
Set
const mySet = new Set(); myArray = myArray.filter(item => { const timestamp = item.a || ''; const value = item.b || ''; const key = timestamp.toString() + value.toString(); if (mySet.has(key)) { return false; } mySet.add(key); return true; })