Benchmark: JavaScript spread operator vs Object.assign performance for two targets

Tests:

Using the spread operator
const config1= {x:1, y:2}; const config2= {a:3, b:4}; const unique = Object.keys(Object.assign({}, config1, config2));
Using Object.assign
const config1= {x:1, y:2}; const config2= {a:3, b:4}; const unique = Object.keys({...config1, ...config2})

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 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0

Browser/OS: Firefox 110 on Windows

Test name	Executions per second
Using the spread operator	8518512.0 Ops/sec
Using Object.assign	6243275.0 Ops/sec

JavaScript spread operator vs Object.assign performance for two targets (version: 0)