Benchmark: JavaScript spread operator vs Object.assign performance vs basic

Tests:

Using Object.assign
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } Object.assign(firstObject, secondObject); Object.assign(firstObject, secondObject); Object.assign(firstObject, secondObject); Object.assign(firstObject, secondObject); Object.assign(firstObject, secondObject);
Basic object creation
const firstObject = { first: 'lol', second: "lol", third: "lol", forth: "lol" } const secondObject = { fifth: 'lol' } const finalObject = { first: firstObject.first, second: firstObject.second, third: firstObject.third, forth: firstObject.forth, fifth: secondObject.fifth }

Rendered benchmark preparation results:

Previous results

Test case name	Result
Using Object.assign
Basic object creation

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Linux; Android 11; SM-A035F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Mobile Safari/537.36

Browser/OS: Chrome Mobile 104 on Android

Test name	Executions per second
Using Object.assign	242577.6 Ops/sec
Basic object creation	403080100.0 Ops/sec

JavaScript spread operator vs Object.assign performance vs basic (version: 0)