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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36

Browser: Safari537.36

Operating system: Mac OS X 10.13.4

Device Platform: Desktop

Date tested: 6 years ago

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);
Access
const firstObject = { sampleData: 'Hello world' } const secondObject = { moreData: 'foo bar' } let finalObject = {} finalObject.someData = firstObject.someData finalObject.moreData = secondObject.moreData