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

Run details:

User agent: Mozilla/5.0 (Android 8.0.0; Mobile; rv:107.0) Gecko/107.0 Firefox/107.0

Browser: Firefox Mobile 107

Operating system: Android 8.0.0

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Using the spread operator	2626301.0 Ops/sec
Using Object.assign	4563463.0 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);