Run results for: JavaScript spread operator vs Object.assign performance v2111111

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 OPR/89.0.4447.64 (Edition GX-CN)

Browser: Opera 89

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Using the spread operator	2539843.0 Ops/sec
Using Object.assign	4566836.0 Ops/sec
Using the spread operator 2	39504770.0 Ops/sec
Using Object.assign 2	5509872.0 Ops/sec

Tests:

Using the spread operator
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const finalObject = { ...firstObject, ...secondObject };
Using Object.assign
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const finalObject = Object.assign({}, firstObject, secondObject);
Using the spread operator 2
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const finalObject = { firstObject, ...secondObject };
Using Object.assign 2
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } const finalObject = Object.assign(firstObject, secondObject);

Run results for: JavaScript spread operator vs Object.assign performance v2111111

Using the spread operator

Using Object.assign

Using the spread operator 2

Using Object.assign 2