Run results for: Object.assign vs spread operator vs set prop vs setPrototypeOf - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser: Chrome 119

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Object.assign	11354919.0 Ops/sec
spread operator	21481918.0 Ops/sec
set prop	1786406784.0 Ops/sec
setPrototypeOf	1322081.0 Ops/sec

Tests:

Object.assign
let o = {}, s = {a:0, b:1, c:2} o = Object.assign(s, o)
spread operator
let o = {}, s = {a:0, b:1, c:2} o = {...o, ...s}
set prop
let o = {}, s = {a:0, b:1, c:2} o.a = s.a o.b = s.b o.c = s.c
setPrototypeOf
let o = {}, s = {a:0, b:1, c:2} Object.setPrototypeOf(o, s)

;