Benchmark: JavaScript spread operator vs object update performance 2

Tests:

Using update
const firstObject = {} firstObject.sample1 = 'Hello world'; firstObject.sample2 = 'foo bar';
Using Object.assign
const firstObject = { } const secondObject = { ...firstObject, sample1: 'foo bar' } const finalObject = { ...secondObject, sample2: 'Hello world' }

Rendered benchmark preparation results:

Previous results

Test case name	Result
Using update
Using Object.assign

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser/OS: Chrome 132 on Linux

Using update

119.4M/s

Using Object.assign

34.6M/s

View exact numbers

Test name	Executions per second
✓ Using update	119,415,592 Ops/sec
Using Object.assign	34,574,624 Ops/sec

JavaScript spread operator vs object update performance 2 (version: 1)