Run results for: Delete vs destructure for objects without mutating

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Browser: Chrome 127

Operating system: Android

Device Platform: Desktop

Date tested: one year ago

Rest object

2.4M/s

delete - spread operator

2.3M/s

delete - assign

1.7M/s

delete - JSON.stringify

1.6M/s

View exact numbers

Script Preparation code:

var obj = {
  a:1,
  b:2,
  c:3
}

Tests:

delete - assign
const copy = Object.assign({}, obj); delete obj.a
Rest object
const { a, ...rest } = obj;
delete - spread operator
const copy = { ...obj } delete obj.a
delete - JSON.stringify
const copy = JSON.parse(JSON.stringify(obj)); delete obj.a