Run results for: Array spread operator vs push in reduce

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; SNE-LX1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.120 Mobile Safari/537.36

Browser: Chrome Mobile 91

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
spread operator	451757.6 Ops/sec
Push	514422.1 Ops/sec

Tests:

spread operator
var arr = [ { "opportunityId": 5943111, "findingList": [ { "findingId": 6919 } ], }, { "opportunityId": 5943111, "findingList": [ { "findingId": 6918, "findingId": 6917 } ] } ] arr.reduce((acc, findingInOpp) => [...acc, ...findingInOpp.findingList.map(({ findingId }) => findingId)],[])
Push
var arr = [ { "opportunityId": 5943111, "findingList": [ { "findingId": 6919 } ], }, { "opportunityId": 5943111, "findingList": [ { "findingId": 6918, "findingId": 6917 } ] } ] arr.reduce((acc, findingInOpp) => { acc.push(...findingInOpp.findingList.map(({ findingId }) => findingId)) return acc },[])