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

Run details:

User agent: Mozilla/5.0 (Android 11; Mobile; rv:94.0) Gecko/94.0 Firefox/94.0

Browser: Firefox Mobile 94

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Using the spread operator	5452768.0 Ops/sec
Using Object.assign	10189410.0 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);