Run results for: assign vs spread

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.119 Safari/537.36 OPR/51.0.2830.23 (Edition beta)

Browser: Opera 51

Operating system: Windows 8.1

Device Platform: Other

Date tested: 2025 years ago

Test name	Executions per second
a1	293263.6 Ops/sec
b1	374044.2 Ops/sec

Tests:

a1
x = {a: 10, b: 20, c: 30} x = Object.assign({}, x, {d: 100})
b1
x = {a: 10, b: 20, c: 30} x = {...x, d: 100}

Run results for: assign vs spread

a1

b1