Run results for: Delete vs destructure for objects with and without mutating copy

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

delete directly

95.6M/s

Rest object

22.1M/s

delete - spread operator

8.8M/s

delete - assign

6.9M/s

delete - JSON.stringify

3.0M/s

View exact numbers

Script Preparation code:

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

Tests:

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