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)

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:

Previous results

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

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

Test name	Executions per second
spread	98.1 Ops/sec
assign	94.1 Ops/sec
assign null	104.3 Ops/sec
Object setPrototypeOf	3955041.8 Ops/sec
Object setPrototypeOf null	2463769.5 Ops/sec
Reflect setPrototypeOf	3549593.2 Ops/sec
Reflect setPrototypeOf null	2323514.5 Ops/sec

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