Run results for: RFDC clone vs Clone vs JSON Clone

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser: Chrome 122

Operating system: Windows

Device Platform: Desktop

Date tested: 10 months ago

Test name	Executions per second
Json clone	94938.5 Ops/sec
RFDC copy	169419.8 Ops/sec
Clone Copy	13081.7 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/rfdc@1.3.1/index.min.js"></script>

Script Preparation code:

var sampleObject = [{
        "id": "0001",
        "type": "donut",
        "name": "Cake",
        "ppu": 0.55,
        "batters": {
            "batter": [{
                    "id": "1001",
                    "type": "Regular"
                },
                {
                    "id": "1002",
                    "type": "Chocolate"
                },
                {
                    "id": "1003",
                    "type": "Blueberry"
                },
                {
                    "id": "1004",
                    "type": "Devil's Food"
                }
            ]
        },
        "topping": [{
                "id": "5001",
                "type": "None"
            },
            {
                "id": "5002",
                "type": "Glazed"
            },
            {
                "id": "5005",
                "type": "Sugar"
            },
            {
                "id": "5007",
                "type": "Powdered Sugar"
            },
            {
                "id": "5006",
                "type": "Chocolate with Sprinkles"
            },
            {
                "id": "5003",
                "type": "Chocolate"
            },
            {
                "id": "5004",
                "type": "Maple"
            }
        ]
    },
    {
        "id": "0002",
        "type": "donut",
        "name": "Raised",
        "ppu": 0.55,
        "batters": {
            "batter": [{
                "id": "1001",
                "type": "Regular"
            }]
        },
        "topping": [{
                "id": "5001",
                "type": "None"
            },
            {
                "id": "5002",
                "type": "Glazed"
            },
            {
                "id": "5005",
                "type": "Sugar"
            },
            {
                "id": "5003",
                "type": "Chocolate"
            },
            {
                "id": "5004",
                "type": "Maple"
            }
        ]
    },
    {
        "id": "0003",
        "type": "donut",
        "name": "Old Fashioned",
        "ppu": 0.55,
        "batters": {
            "batter": [{
                    "id": "1001",
                    "type": "Regular"
                },
                {
                    "id": "1002",
                    "type": "Chocolate"
                }
            ]
        },
        "topping": [{
                "id": "5001",
                "type": "None"
            },
            {
                "id": "5002",
                "type": "Glazed"
            },
            {
                "id": "5003",
                "type": "Chocolate"
            },
            {
                "id": "5004",
                "type": "Maple"
            }
        ]
    }
];

var myCopy = null;

Tests:

Json clone
myCopy = JSON.parse(JSON.stringify(sampleObject));
RFDC copy
var cloneData = rfdc(); myCopy = cloneData(sampleObject);
Clone Copy
var clone = (function() { 'use strict'; function _instanceof(obj, type) { return type != null && obj instanceof type; } var nativeMap; try { nativeMap = Map; } catch(_) { // maybe a reference error because no `Map`. Give it a dummy value that no // value will ever be an instanceof. nativeMap = function() {}; } var nativeSet; try { nativeSet = Set; } catch(_) { nativeSet = function() {}; } var nativePromise; try { nativePromise = Promise; } catch(_) { nativePromise = function() {}; } /** * Clones (copies) an Object using deep copying. * * This function supports circular references by default, but if you are certain * there are no circular references in your object, you can save some CPU time * by calling clone(obj, false). * * Caution: if `circular` is false and `parent` contains circular references, * your program may enter an infinite loop and crash. * * @param `parent` - the object to be cloned * @param `circular` - set to true if the object to be cloned may contain * circular references. (optional - true by default) * @param `depth` - set to a number if the object is only to be cloned to * a particular depth. (optional - defaults to Infinity) * @param `prototype` - sets the prototype to be used when cloning an object. * (optional - defaults to parent prototype). * @param `includeNonEnumerable` - set to true if the non-enumerable properties * should be cloned as well. Non-enumerable properties on the prototype * chain will be ignored. (optional - false by default) */ function clone(parent, circular, depth, prototype, includeNonEnumerable) { if (typeof circular === 'object') { depth = circular.depth; prototype = circular.prototype; includeNonEnumerable = circular.includeNonEnumerable; circular = circular.circular; } // maintain two arrays for circular references, where corresponding parents // and children have the same index var allParents = []; var allChildren = []; var useBuffer = typeof Buffer != 'undefined'; if (typeof circular == 'undefined') circular = true; if (typeof depth == 'undefined') depth = Infinity; // recurse this function so we don't reset allParents and allChildren function _clone(parent, depth) { // cloning null always returns null if (parent === null) return null; if (depth === 0) return parent; var child; var proto; if (typeof parent != 'object') { return parent; } if (_instanceof(parent, nativeMap)) { child = new nativeMap(); } else if (_instanceof(parent, nativeSet)) { child = new nativeSet(); } else if (_instanceof(parent, nativePromise)) { child = new nativePromise(function (resolve, reject) { parent.then(function(value) { resolve(_clone(value, depth - 1)); }, function(err) { reject(_clone(err, depth - 1)); }); }); } else if (clone.__isArray(parent)) { child = []; } else if (clone.__isRegExp(parent)) { child = new RegExp(parent.source, __getRegExpFlags(parent)); if (parent.lastIndex) child.lastIndex = parent.lastIndex; } else if (clone.__isDate(parent)) { child = new Date(parent.getTime()); } else if (useBuffer && Buffer.isBuffer(parent)) { if (Buffer.allocUnsafe) { // Node.js >= 4.5.0 child = Buffer.allocUnsafe(parent.length); } else { // Older Node.js versions child = new Buffer(parent.length); } parent.copy(child); return child; } else if (_instanceof(parent, Error)) { child = Object.create(parent); } else { if (typeof prototype == 'undefined') { proto = Object.getPrototypeOf(parent); child = Object.create(proto); } else { child = Object.create(prototype); proto = prototype; } } if (circular) { var index = allParents.indexOf(parent); if (index != -1) { return allChildren[index]; } allParents.push(parent); allChildren.push(child); } if (_instanceof(parent, nativeMap)) { parent.forEach(function(value, key) { var keyChild = _clone(key, depth - 1); var valueChild = _clone(value, depth - 1); child.set(keyChild, valueChild); }); } if (_instanceof(parent, nativeSet)) { parent.forEach(function(value) { var entryChild = _clone(value, depth - 1); child.add(entryChild); }); } for (var i in parent) { var attrs; if (proto) { attrs = Object.getOwnPropertyDescriptor(proto, i); } if (attrs && attrs.set == null) { continue; } child[i] = _clone(parent[i], depth - 1); } if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(parent); for (var i = 0; i < symbols.length; i++) { // Don't need to worry about cloning a symbol because it is a primitive, // like a number or string. var symbol = symbols[i]; var descriptor = Object.getOwnPropertyDescriptor(parent, symbol); if (descriptor && !descriptor.enumerable && !includeNonEnumerable) { continue; } child[symbol] = _clone(parent[symbol], depth - 1); if (!descriptor.enumerable) { Object.defineProperty(child, symbol, { enumerable: false }); } } } if (includeNonEnumerable) { var allPropertyNames = Object.getOwnPropertyNames(parent); for (var i = 0; i < allPropertyNames.length; i++) { var propertyName = allPropertyNames[i]; var descriptor = Object.getOwnPropertyDescriptor(parent, propertyName); if (descriptor && descriptor.enumerable) { continue; } child[propertyName] = _clone(parent[propertyName], depth - 1); Object.defineProperty(child, propertyName, { enumerable: false }); } } return child; } return _clone(parent, depth); } /** * Simple flat clone using prototype, accepts only objects, usefull for property * override on FLAT configuration object (no nested props). * * USE WITH CAUTION! This may not behave as you wish if you do not know how this * works. */ clone.clonePrototype = function clonePrototype(parent) { if (parent === null) return null; var c = function () {}; c.prototype = parent; return new c(); }; // private utility functions function __objToStr(o) { return Object.prototype.toString.call(o); } clone.__objToStr = __objToStr; function __isDate(o) { return typeof o === 'object' && __objToStr(o) === '[object Date]'; } clone.__isDate = __isDate; function __isArray(o) { return typeof o === 'object' && __objToStr(o) === '[object Array]'; } clone.__isArray = __isArray; function __isRegExp(o) { return typeof o === 'object' && __objToStr(o) === '[object RegExp]'; } clone.__isRegExp = __isRegExp; function __getRegExpFlags(re) { var flags = ''; if (re.global) flags += 'g'; if (re.ignoreCase) flags += 'i'; if (re.multiline) flags += 'm'; return flags; } clone.__getRegExpFlags = __getRegExpFlags; return clone; })(); myCopy = clone(sampleObject);

Run results for: RFDC clone vs Clone vs JSON Clone

Json clone

RFDC copy

Clone Copy