Benchmark: cloneJson Perf (reg json)

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var obj = [
  {
    "_id": "5efb084ba9205ffff8855aa6",
    "index": 0,
    "guid": "3ecf6fbe-383a-4b9b-b228-31ae7658d907",
    "isActive": false,
    "balance": "$3,023.25",
    "picture": "http://placehold.it/32x32",
    "age": 26,
    "eyeColor": "green",
    "name": {
      "first": "Mcneil",
      "last": "Short"
    },
    "company": "NEPTIDE",
    "email": "mcneil.short@neptide.net",
    "phone": "+1 (967) 599-3405",
    "address": "880 Montgomery Street, Innsbrook, Oregon, 8908",
    "about": "Mollit magna consequat velit adipisicing ea mollit et ea esse id ea deserunt. Est elit consequat velit id duis laborum consectetur tempor eu sunt. Do excepteur laborum do cillum magna fugiat esse. Amet tempor culpa quis dolore exercitation eu sunt ea do ipsum officia amet.",
    "registered": "Friday, March 11, 2016 9:36 AM",
    "latitude": "-64.253646",
    "longitude": "-121.37712",
    "tags": [
      "irure",
      "laboris",
      "fugiat",
      "non",
      "amet"
    ],
    "range": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "friends": [
      {
        "id": 0,
        "name": "Cara Finley"
      },
      {
        "id": 1,
        "name": "Ginger Watkins"
      },
      {
        "id": 2,
        "name": "Stone Rocha"
      }
    ],
    "greeting": "Hello, Mcneil! You have 6 unread messages.",
    "favoriteFruit": "strawberry"
  },
  {
    "_id": "5efb084baad2546ad77de966",
    "index": 1,
    "guid": "b2353e2e-fecf-4c7e-98d4-a326976d7861",
    "isActive": true,
    "balance": "$1,518.64",
    "picture": "http://placehold.it/32x32",
    "age": 34,
    "eyeColor": "brown",
    "name": {
      "first": "Erma",
      "last": "Mcconnell"
    },
    "company": "GEEKETRON",
    "email": "erma.mcconnell@geeketron.us",
    "phone": "+1 (931) 555-3487",
    "address": "618 Ferry Place, Alfarata, Kansas, 4613",
    "about": "Irure quis nostrud minim dolor ullamco proident labore tempor ex. Aute eiusmod non esse irure minim et. Laboris irure enim nisi esse anim commodo laboris labore magna dolore sit non. Officia fugiat labore cillum commodo id. Voluptate ullamco est do adipisicing esse elit qui incididunt excepteur exercitation aliqua anim minim.",
    "registered": "Sunday, January 20, 2019 3:32 PM",
    "latitude": "64.002747",
    "longitude": "-12.374574",
    "tags": [
      "consequat",
      "ad",
      "irure",
      "nisi",
      "exercitation"
    ],
    "range": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "friends": [
      {
        "id": 0,
        "name": "Celina Martin"
      },
      {
        "id": 1,
        "name": "Pacheco Hess"
      },
      {
        "id": 2,
        "name": "Tammi Nelson"
      }
    ],
    "greeting": "Hello, Erma! You have 7 unread messages.",
    "favoriteFruit": "apple"
  },
  {
    "_id": "5efb084bc0adc80ba18b1667",
    "index": 2,
    "guid": "ec7c100b-869e-4bb1-9774-ecf0f2bf8d6b",
    "isActive": true,
    "balance": "$3,466.92",
    "picture": "http://placehold.it/32x32",
    "age": 36,
    "eyeColor": "blue",
    "name": {
      "first": "Young",
      "last": "Cobb"
    },
    "company": "FANFARE",
    "email": "young.cobb@fanfare.me",
    "phone": "+1 (831) 508-3651",
    "address": "819 Brigham Street, Hayden, Maryland, 4133",
    "about": "Amet sit do in et adipisicing eiusmod officia laboris ad sint cupidatat. Reprehenderit in aliquip exercitation et velit laboris elit reprehenderit. Sit officia do consequat nisi id consequat reprehenderit excepteur cupidatat aliquip magna. Quis mollit ullamco exercitation nostrud. Laborum laboris ut est reprehenderit nostrud deserunt non aute minim proident incididunt mollit exercitation quis. Nisi irure nostrud cillum eiusmod.",
    "registered": "Sunday, October 4, 2015 7:43 PM",
    "latitude": "30.661339",
    "longitude": "57.020556",
    "tags": [
      "adipisicing",
      "irure",
      "eiusmod",
      "est",
      "minim"
    ],
    "range": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "friends": [
      {
        "id": 0,
        "name": "Yang Lindsey"
      },
      {
        "id": 1,
        "name": "Cortez Yates"
      },
      {
        "id": 2,
        "name": "Clare Glover"
      }
    ],
    "greeting": "Hello, Young! You have 7 unread messages.",
    "favoriteFruit": "strawberry"
  },
  {
    "_id": "5efb084b56e7f6c8230ff1ba",
    "index": 3,
    "guid": "ffa81d47-6c55-4296-92b4-92bc1a4e5164",
    "isActive": false,
    "balance": "$2,647.06",
    "picture": "http://placehold.it/32x32",
    "age": 32,
    "eyeColor": "green",
    "name": {
      "first": "Stephanie",
      "last": "Garcia"
    },
    "company": "CAXT",
    "email": "stephanie.garcia@caxt.co.uk",
    "phone": "+1 (937) 532-3990",
    "address": "590 Wolf Place, Rose, Michigan, 3970",
    "about": "Deserunt culpa eiusmod officia voluptate exercitation pariatur sunt cupidatat deserunt ea id ut. Reprehenderit eu eiusmod incididunt duis veniam duis. Eiusmod quis culpa velit labore ipsum occaecat sunt in dolor aliquip culpa veniam labore culpa. Anim anim culpa nisi laboris ea duis qui excepteur magna laboris aliqua ut exercitation ex. Sunt consectetur ea officia commodo eiusmod exercitation fugiat mollit. Occaecat anim do mollit aliqua aliquip est aliquip ex amet consequat. Voluptate aute ipsum qui nulla magna.",
    "registered": "Wednesday, February 26, 2014 1:04 AM",
    "latitude": "39.14353",
    "longitude": "-56.353484",
    "tags": [
      "ullamco",
      "laborum",
      "sunt",
      "voluptate",
      "do"
    ],
    "range": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "friends": [
      {
        "id": 0,
        "name": "Roxie Eaton"
      },
      {
        "id": 1,
        "name": "Lane Macdonald"
      },
      {
        "id": 2,
        "name": "Howell Page"
      }
    ],
    "greeting": "Hello, Stephanie! You have 7 unread messages.",
    "favoriteFruit": "strawberry"
  },
  {
    "_id": "5efb084bb62bfb450df19330",
    "index": 4,
    "guid": "6a535c6f-cf17-4fee-8345-95b92ada8fb9",
    "isActive": true,
    "balance": "$3,793.24",
    "picture": "http://placehold.it/32x32",
    "age": 25,
    "eyeColor": "green",
    "name": {
      "first": "Stephens",
      "last": "Parks"
    },
    "company": "FLEXIGEN",
    "email": "stephens.parks@flexigen.info",
    "phone": "+1 (812) 484-3157",
    "address": "835 Nevins Street, Castleton, Puerto Rico, 521",
    "about": "Duis laboris reprehenderit excepteur duis. Esse pariatur pariatur consectetur veniam nulla ea est elit dolore exercitation sit officia. Aliqua et do mollit nostrud nisi amet dolor id. Dolore nisi et qui amet magna laborum. Incididunt est aliqua eu tempor enim.",
    "registered": "Thursday, June 6, 2019 3:01 AM",
    "latitude": "19.582355",
    "longitude": "171.918936",
    "tags": [
      "eiusmod",
      "dolore",
      "ex",
      "voluptate",
      "commodo"
    ],
    "range": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "friends": [
      {
        "id": 0,
        "name": "Larson Sanford"
      },
      {
        "id": 1,
        "name": "Finch Cotton"
      },
      {
        "id": 2,
        "name": "Elisa Townsend"
      }
    ],
    "greeting": "Hello, Stephens! You have 7 unread messages.",
    "favoriteFruit": "apple"
  },
  {
    "_id": "5efb084b7173dce996b75928",
    "index": 5,
    "guid": "149171e2-b390-4830-a077-ad260bb17be8",
    "isActive": false,
    "balance": "$3,222.03",
    "picture": "http://placehold.it/32x32",
    "age": 24,
    "eyeColor": "blue",
    "name": {
      "first": "Klein",
      "last": "Harper"
    },
    "company": "ISOSURE",
    "email": "klein.harper@isosure.biz",
    "phone": "+1 (823) 590-3022",
    "address": "151 Folsom Place, Dupuyer, Maine, 5379",
    "about": "Occaecat esse sint fugiat voluptate ut. Voluptate nostrud nisi duis reprehenderit aliqua labore. Dolore duis aliquip magna ea ea proident commodo.",
    "registered": "Thursday, May 7, 2020 11:10 PM",
    "latitude": "-63.261246",
    "longitude": "-46.122835",
    "tags": [
      "incididunt",
      "fugiat",
      "fugiat",
      "quis",
      "aute"
    ],
    "range": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "friends": [
      {
        "id": 0,
        "name": "Ellison Morrow"
      },
      {
        "id": 1,
        "name": "Witt Huber"
      },
      {
        "id": 2,
        "name": "Herminia Larson"
      }
    ],
    "greeting": "Hello, Klein! You have 10 unread messages.",
    "favoriteFruit": "apple"
  },
  {
    "_id": "5efb084b54251a4d2a166955",
    "index": 6,
    "guid": "a4805e7b-2c9a-41f1-b21c-503ff788f5b0",
    "isActive": false,
    "balance": "$2,123.75",
    "picture": "http://placehold.it/32x32",
    "age": 30,
    "eyeColor": "green",
    "name": {
      "first": "Leola",
      "last": "Woods"
    },
    "company": "COFINE",
    "email": "leola.woods@cofine.ca",
    "phone": "+1 (945) 516-2703",
    "address": "198 Sullivan Place, Sedley, Arkansas, 8718",
    "about": "Voluptate amet ipsum voluptate consectetur labore in tempor officia consectetur incididunt magna voluptate exercitation. Reprehenderit ad duis dolore commodo. Anim nulla Lorem enim voluptate esse officia. Reprehenderit sint eiusmod exercitation consectetur. Irure eiusmod aliquip mollit incididunt enim aute labore amet labore.",
    "registered": "Thursday, January 8, 2015 12:58 PM",
    "latitude": "49.680939",
    "longitude": "-20.187306",
    "tags": [
      "incididunt",
      "labore",
      "duis",
      "minim",
      "non"
    ],
    "range": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "friends": [
      {
        "id": 0,
        "name": "Terri Cantu"
      },
      {
        "id": 1,
        "name": "Dee Shepard"
      },
      {
        "id": 2,
        "name": "Jennifer Duffy"
      }
    ],
    "greeting": "Hello, Leola! You have 5 unread messages.",
    "favoriteFruit": "apple"
  }
];

Tests:

lodash.cloneDeep
_.cloneDeep(obj);
cleanJson [modified to clone] (Recursive)
function cleanJson(obj) { // LOOP THROUGH ARRAYS let cleaned; if (obj instanceof Array) { cleaned = []; for (const elem of obj) { cleaned.push(cleanJson(elem)); } return cleaned; // CLEAN AN OBJECT } else if (obj && typeof obj === "object") { cleaned = {}; for (const key in obj) { // If key starts with "$" it is a private variable // If the key starts with _ we are expecting it to be // _id, __v or __t, all of which we don't allow in the clean // JSON as it is not something we want affecting Mongo // switch (key.charAt(0)) { // case "$": // case "_": // continue; // } // If the key is not one of those on our persistance // blacklist, we clean the sub-JSON cleaned[key] = cleanJson(obj[key]); } return cleaned; } else { return obj; } } cleanJson(obj);
cloneJson (Loop)
function cloneJsonLoop(value) { if (!Array.isArray(value) && typeof value !== "object") return value; let copyObj; const vs = []; if (Array.isArray(value)) { copyObj = [...value]; } else if (typeof value === "object") { copyObj = { ...value }; } vs.push(copyObj); while (vs.length != 0) { const obj = vs.pop(); if (obj instanceof Array) { for (let i = 0; i < obj.length; i++) { const value = obj[i]; if (value instanceof Array) { obj[i] = value.slice(); vs.push(obj[i]); } else if (typeof value === "object") { obj[i] = Object.assign({}, value); vs.push(obj[i]); } } } /** typeof obj === object */ else { for (const key of Object.keys(obj)) { const value = obj[key]; if (value instanceof Array) { obj[key] = value.slice(); vs.push(obj[key]); } else if (typeof value === "object") { obj[key] = Object.assign({}, value); vs.push(obj[key]); } } } } return copyObj; } cloneJsonLoop(obj);
cloneJson (Loop - for in)
function cloneJsonLoop(value) { if (!Array.isArray(value) && typeof value !== "object") return value; let copyObj; const vs = []; if (Array.isArray(value)) { copyObj = [...value]; } else if (typeof value === "object") { copyObj = { ...value }; } vs.push(copyObj); while (vs.length != 0) { const obj = vs.pop(); if (obj instanceof Array) { for (let i = 0; i < obj.length; i++) { const value = obj[i]; if (value instanceof Array) { obj[i] = value.slice(); vs.push(obj[i]); } else if (typeof value === "object") { obj[i] = Object.assign({}, value); vs.push(obj[i]); } } } /** typeof obj === object */ else { for (const key in obj) { const value = obj[key]; if (value instanceof Array) { obj[key] = value.slice(); vs.push(obj[key]); } else if (typeof value === "object") { obj[key] = Object.assign({}, value); vs.push(obj[key]); } } } } return copyObj; } cloneJsonLoop(obj);
deepClone (if)
function deepClone(obj) { let out; if (Array.isArray(obj)) { out = []; for (let index = 0; index < obj.length; ++index) { const subArray = obj[index]; out.push(typeof subArray === "object" ? deepClone(subArray) : subArray); } } else { out = {}; for (const key in obj) { const subObject = obj[key]; if (key[0] == "$" || key[0] == "_") continue; out[key] = typeof subObject === "object" ? deepClone(subObject) : subObject; } } return out; } deepClone(obj);
deepClone (switch, Object.keys)
function deepClone(obj) { let out; if (Array.isArray(obj)) { out = []; for (let index = 0; index < obj.length; ++index) { const subArray = obj[index]; out.push(typeof subArray === "object" ? deepClone(subArray) : subArray); } } else { out = {}; for (const key of Object.keys(obj)) { const subObject = obj[key]; switch (key.charAt(0)) { case "$": case "_": continue; } out[key] = typeof subObject === "object" ? deepClone(subObject) : subObject; } } return out; } deepClone(obj);
deepClone (switch, for in)
function deepClone(obj) { let out; if (Array.isArray(obj)) { out = []; for (let index = 0; index < obj.length; ++index) { const subArray = obj[index]; out.push(typeof subArray === "object" ? deepClone(subArray) : subArray); } } else { out = {}; for (const key in obj) { const subObject = obj[key]; switch (key.charAt(0)) { case "$": case "_": continue; } out[key] = typeof subObject === "object" ? deepClone(subObject) : subObject; } } return out; } deepClone(obj);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash.cloneDeep
cleanJson [modified to clone] (Recursive)
cloneJson (Loop)
cloneJson (Loop - for in)
deepClone (if)
deepClone (switch, Object.keys)
deepClone (switch, for in)

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

It looks like you're presenting the results of a benchmarking test to compare different methods for creating a deep clone of an object. You've provided the raw data and asked me to analyze it.

After reviewing the data, I can provide some insights:

1. **Recursive vs. Iterative approaches**: The customDeepClone (Recursive) method seems to be performing best with 253 executions per second, followed closely by cleanJson [modified to clone] (Recursive) at 139 executions per second.
2. **Lodash.cloneDeep**: This method from the popular JavaScript library Lodash is performing well, with an execution rate of 92 seconds per second. It's likely that this implementation is optimized for performance and taking advantage of its own internal optimizations.
3. **For-in loop vs. Object.keys**: The cloneJson (Loop - for in) method is slower than the cloneJson (Loop - Object.keys) method, which is also performing well with 78 executions per second.

To answer your question directly: The fastest way to create a deep clone of an object appears to be the customDeepClone (Recursive) method, followed closely by cleanJson [modified to clone] (Recursive). However, without more context or information about the specific use cases or requirements, it's difficult to make a definitive recommendation.

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4186.0 Safari/537.36

Browser/OS: Chrome 86 on Mac OS X 10.15.5

View result in a separate tab

Test name	Executions per second
lodash.cloneDeep	92.7 Ops/sec
cleanJson [modified to clone] (Recursive)	139.7 Ops/sec
customDeepClone (Recursive)	253.3 Ops/sec
cloneJson (Loop - Object.keys)	78.3 Ops/sec
cloneJson (Loop - for in)	92.7 Ops/sec

Related benchmarks:

cloneJson Perf (reg json) (version: 3)

Comparing performance of: lodash.cloneDeep vs cleanJson [modified to clone] (Recursive) vs cloneJson (Loop) vs cloneJson (Loop - for in) vs deepClone (if) vs deepClone (switch, Object.keys) vs deepClone (switch, for in)

Created: 4 years ago by: Registered User

Jump to the latest result

lodash.cloneDeep

cleanJson [modified to clone] (Recursive)

cloneJson (Loop)

cloneJson (Loop - for in)

deepClone (if)

deepClone (switch, Object.keys)

deepClone (switch, for in)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):