Run results for: spread operator VS delete

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one month ago

Benchmark engine: Benchmark.js

mutable - delete

107.7M/s

imutable - spread operator

9.4M/s

imutable spread operator - delete

7.8M/s

imutable assign - delete

5.1M/s

imutable stringify - delete

468K/s

View exact numbers

Test name	Executions per second
✓ mutable - delete	107,660,088 Ops/sec
imutable - spread operator	9,374,614 Ops/sec
imutable spread operator - delete	7,768,706 Ops/sec
imutable assign - delete	5,069,129 Ops/sec
imutable stringify - delete	467,996 Ops/sec

Script Preparation code:

var user = {
id: 1,
    name: 'Hamed',
    gender: 'male',
  email: 'johndoe@example.com',
  address: {
    street: '123 Main Street',
    city: 'Anytown',
    state: 'ABC',
    country: 'XYZ'
  },
  hobbies: ['reading', 'coding', 'gaming'],
  education: [
    {
      degree: 'Bachelor of Science',
      major: 'Computer Science',
      university: 'ABC University',
      year: 2015
    },
    {
      degree: 'Master of Business Administration',
      major: 'Business Management',
      university: 'XYZ University',
      year: 2019
    }
  ],
  projects: {
    project1: {
      name: 'Project A',
      description: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit.',
      startDate: '2020-01-01',
      endDate: '2021-12-31'
    },
    project2: {
      name: 'Project B',
      description: 'Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.',
      startDate: '2022-01-01',
      endDate: '2023-06-30'
    }
  }
    
}

Tests: