Benchmark: JavaScript spread operator vs object update performance test fork

Tests:

Using update
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const finalObject = {...firstObject, ...secondObject}
Using Object.assign
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const finalObject = Object.assign(firstObject, secondObject);

Rendered benchmark preparation results:

Previous results

Test case name	Result
Using update
Using Object.assign

Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36

Browser/OS: Chrome 144 on Mac OS X 10.15.7

Using Object.assign

63.0M/s

Using update

54.7M/s

View exact numbers

Test name	Executions per second
✓ Using Object.assign	62,953,920 Ops/sec
Using update	54,724,712 Ops/sec

JavaScript spread operator vs object update performance test fork (version: 1)