Run results for: merge vs set a value

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36

Browser: Chrome 79

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
merge	22832420.0 Ops/sec
set a value	939747300.0 Ops/sec

Tests:

merge
let obj1 = { first: 'first', second: 'second', third: 'third' }; const obj2 = { fourth: 'fourth' }; obj1 = { ...obj1, ...obj2, };
set a value
let obj1 = { first: 'first', second: 'second', third: 'third' }; obj1.fourth = 'fourth';