Run results for: object.assign vs spread operator for shallow copying large objects 2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36

Browser: Chrome 101

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
var copy={...a}	298273.5 Ops/sec
var copy = Object.assign({}, a)	621.1 Ops/sec

Script Preparation code:

var a={};
var i=10000;
while(i--)a[i]=i;

Tests: