Benchmark: JavaScript spread operator vs Object.assign performance, non destructive with only one object

Tests:

Using the spread operator
const firstObject = { sampleData: 'Hello world' } const finalObject = { ...firstObject, };
Using Object.assign
const firstObject = { sampleData: 'Hello world' } const finalObject = Object.assign({}, firstObject);

Rendered benchmark preparation results:

Previous results

Test case name	Result
Using the spread operator
Using Object.assign

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Latest run results:

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

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 15 on iOS 15.6

Test name	Executions per second
Using the spread operator	14595910.0 Ops/sec
Using Object.assign	4140412.0 Ops/sec

JavaScript spread operator vs Object.assign performance, non destructive with only one object (version: 0)