Run results for: assign vs direct

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
direct	1114.8 Ops/sec
assign	279.4 Ops/sec

Script Preparation code:

var data = {};

Tests:

direct
for(let i = 0; i < 10000; i++) { data[`prop_${i}`] = true; }
assign
for(let i = 0; i < 10000; i++) { Object.assign(data, { [`prop_${i}`]: true }); }