Benchmark: spread operator vs object assign vs object setPrototypeOf vs reflect setPrototypeOf

spread operator vs object assign vs object setPrototypeOf vs reflect setPrototypeOf (version: 1)

spread operator vs object assign vs object setPrototypeOf vs reflect setPrototypeOf

Comparing performance of: `spread vs assign vs assign null vs Object setPrototypeOf vs Object setPrototypeOf null vs Reflect setPrototypeOf vs Reflect setPrototypeOf null`

Created: 3 years ago by: Registered User

Go to the latest result

HTML Preparation code:

spred vs object assign vs object setPrototypeOf vs reflect setPrototypeOf

Script Preparation code:

window.data = Array.from({ length: 65535 }, (_, index) => index);

Tests:

spread
var spread = { ...window.data };
assign
var assign = Object.assign({}, window.data);
assign null
var assignNull = Object.assign(Object.create(null), window.data);
Object setPrototypeOf
var objectSetPrototypeOf = Object.setPrototypeOf({}, window.data);
Object setPrototypeOf null
var objectSetPrototypeOfNull = Object.setPrototypeOf(Object.create(null), window.data);
Reflect setPrototypeOf
var reflectSetPrototypeOf = Object.setPrototypeOf({}, window.data);
Reflect setPrototypeOf null
var reflectSetPrototypeOfNull = Object.setPrototypeOf(Object.create(null), window.data);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
spread
assign
assign null
Object setPrototypeOf
Object setPrototypeOf null
Reflect setPrototypeOf
Reflect setPrototypeOf null

Fastest: N/A

Slowest: N/A

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/129.0.0.0 Safari/537.36

Browser/OS: Chrome 129 on Linux

View result in a separate tab

Object setPrototypeOf

4.0M/s

Reflect setPrototypeOf

3.5M/s

Object setPrototypeOf null

2.5M/s

Reflect setPrototypeOf null

2.3M/s

assign null

104/s

spread

98/s

assign

94/s

View exact numbers

Test name	Executions per second
✓ Object setPrototypeOf	3,955,042 Ops/sec
Reflect setPrototypeOf	3,549,593 Ops/sec
Object setPrototypeOf null	2,463,770 Ops/sec
Reflect setPrototypeOf null	2,323,514 Ops/sec
assign null	104 Ops/sec
spread	98 Ops/sec
assign	94 Ops/sec