Run results for: Difference of Object.assign and spread operator to get a new reference

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0

Browser: Firefox 63

Operating system: Linux

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Using Object.assign	2628991.0 Ops/sec
Using spread operator	4136049.0 Ops/sec
Using a plain initialization	1178361.0 Ops/sec

Script Preparation code:

myObj = {a: 1, b: 2, c: 3}

Tests:

Using Object.assign
const newObjectA = Object.assign({}, myObj)
Using spread operator
const newObjectB = {...myObj}
Using a plain initialization
const newObjectC = JSON.parse(JSON.stringify(myObj))