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

Run details:

User agent: Mozilla/5.0 (Linux; Android 5.0.2; Mi 4i Build/LRX22G) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Mobile Safari/537.36

Browser: Chrome Mobile 67

Operating system: Android 5.0.2

Device Platform: Mobile

Date tested: 6 years ago

Test name	Executions per second
Using the spread operator	137697.9 Ops/sec
Using Object.assign	152245.4 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);