Benchmark: JavaScript spread operator vs Object.assign performance v2

Tests:

Using the spread operator
const firstObject = { sampleData: 'Hello world', moreData: 'foo bar' } const finalObject = { ...firstObject, };
Using Object.assign
const firstObject = { sampleData: 'Hello world', moreData: 'foo bar' } 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: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36

Browser/OS: Chrome 77 on Mac OS X 10.15.0

Test name	Executions per second
Using the spread operator	48661820.0 Ops/sec
Using Object.assign	3982635.0 Ops/sec

JavaScript spread operator vs Object.assign performance v2 (version: 0)