Run results for: Lodash cloneDeep vs structuredClone vs recursiveDeepCopy vs JSON clone (larger object)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser: Chrome 114

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Lodash cloneDeep	4006.7 Ops/sec
Native structuredClone	5837.1 Ops/sec
recursiveDeepCopy	8033.7 Ops/sec
Json Clone	6808.1 Ops/sec

HTML Preparation code:

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

Script Preparation code:

// Real world object containing data from a WYSIWYG data viz editor
// Still no functions or complex data, purely JSON
var MyLargerObject = {
    "uid": "spw6-xggz",
    "title": "print story",
    "description": "",
    "dataSource": {
        "datasetUid": "niqh-ewd6"
    },
    "theme": "serif",
    "layout": "expanded",
    "blocks": [
        {
            "layout": "12",
            "components": [
                {
                    "type": "globalFilter",
                    "value": {
                        "dataset": {
                            "datasetUid": "niqh-ewd6",
                            "parameterOverrides": {}
                        },
                        "filters": [
                            {
                                "function": "noop",
                                "isHidden": false,
                                "arguments": null,
                                "columnName": "snow",
                                "isDrilldown": false
                            }
                        ]
                    },
                    "layout": {
                        "h": 4,
                        "w": 12,
                        "x": 0,
                        "y": 0,
                        "maxH": 4,
                        "maxW": 12,
                        "minH": 4,
                        "minW": 12,
                        "static": "true"
                    }
                }
            ],
            "presentable": true,
            "background_color": null
        },
        {
            "layout": "12",
            "components": [
                {
                    "type": "html",
                    "value": "<div><i>This is placeholder text. To get started, remove it and input your own information!</i> Or you could just leave this bit of text right here to experiment with the design and layout of your story. Go ahead, add another! Using a variety of layouts and visual arrangements will make your story stand out. Or that's what we like to think. This explains why we have all of these content blocks for you to play with. So get after it, author! Tell your story. It's going to be magnificent!d<br></div>",
                    "layout": {
                        "h": 15,
                        "i": "clientSideId_2-block-item-index-0",
                        "w": 4,
                        "x": 0,
                        "y": 0,
                        "minW": 2,
                        "moved": false,
                        "static": false
                    }
                },
                {
                    "type": "socrata.visualization.agTable",
                    "value": {
                        "vif": {
                            "title": "",
                            "format": {
                                "type": "visualization_interchange_format",
                                "version": 4
                            },
                            "series": [
                                {
                                    "type": "agTable",
                                    "unit": {
                                        "one": "row",
                                        "other": "rows"
                                    },
                                    "color": {},
                                    "label": null,
                                    "dataSource": {
                                        "type": "socrata.soql",
                                        "filters": [],
                                        "measure": {
                                            "columnName": null,
                                            "aggregationFunction": "count"
                                        },
                                        "dimension": {
                                            "columns": [
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                                                    "id": 43302990,
                                                    "name": "STATION",
                                                    "format": {},
                                                    "position": 1,
                                                    "fieldName": "station",
                                                    "description": "",
                                                    "dataTypeName": "text",
                                                    "tableColumnId": 32230044,
                                                    "cachedContents": {
                                                        "top": [
                                                            {
                                                                "item": "USW00024233",
                                                                "count": "27223"
                                                            }
                                                        ],
                                                        "null": "0",
                                                        "count": "27223",
                                                        "largest": "USW00024233",
                                                        "non_null": "27223",
                                                        "smallest": "USW00024233",
                                                        "cardinality": "1"
                                                    },
                                                    "renderTypeName": "text"
                                                },
                                                {
                                                    "id": 43302991,
                                                    "name": "NAME",
                                                    "format": {},
                                                    "position": 2,
                                                    "fieldName": "name",
                                                    "description": "",
                                                    "dataTypeName": "text",
                                                    "tableColumnId": 32230045,
                                                    "cachedContents": {
                                                        "top": [
                                                            {
                                                                "item": "SEATTLE TACOMA AIRPORT, WA US",
                                                                "count": "27223"
                                                            }
                                                        ],
                                                        "null": "0",
                                                        "count": "27223",
                                                        "largest": "SEATTLE TACOMA AIRPORT, WA US",
                                                        "non_null": "27223",
                                                        "smallest": "SEATTLE TACOMA AIRPORT, WA US",
                                                        "cardinality": "1"
                                                    },
                                                    "renderTypeName": "text"
                                                },
                                                {
                                                    "id": 43302992,
                                                    "name": "DATE",
                                                    "format": {},
                                                    "position": 3,
                                                    "fieldName": "date",
                                                    "description": "",
                                                    "dataTypeName": "calendar_date",
                                                    "tableColumnId": 32230046,
                                                    "cachedContents": {
                                                        "top": [
                                                            {
                                                                "item": "1948-02-29T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-01T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-02T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-03T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-04T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-05T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-06T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-07T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-08T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-09T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-10T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-11T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-12T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-13T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-14T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-15T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-16T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-17T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-18T00:00:00.000",
                                                                "count": "1"
                                                            },
                                                            {
                                                                "item": "1948-03-19T00:00:00.000",
                                                                "count": "1"
                                                            }
                                                        ],
                                                        "null": "0",
                                                        "count": "27223",
                                                        "largest": "2022-09-09T00:00:00.000",
                                                        "non_null": "27223",
                                                        "smallest": "1948-02-28T00:00:00.000",
                                                        "cardinality": "27223"
                                                    },
                                                    "renderTypeName": "calendar_date"
                                                },
                                                {
                                                    "id": 43302993,
                                                    "name": "PRCP",
                                                    "format": {},
                                                    "position": 4,
                                                    "fieldName": "prcp",
                                                    "description": "",
                                                    "dataTypeName": "number",
                                                    "tableColumnId": 32230047,
                                                    "cachedContents": {
                                                        "top": [
                                                            {
                                                                "item": "0.00",
                                                                "count": "15608"
                                                            },
                                                            {
                                                                "item": "0.01",
                                                                "count": "1003"
                                                            },
                                                            {
                                                                "item": "0.02",
                                                                "count": "748"
                                                            },
                                                            {
                                                                "item": "0.03",
                                                                "count": "532"
                                                            },
                                                            {
                                                                "item": "0.04",
                                                                "count": "459"
                                                            },
                                                            {
                                                                "item": "0.05",
                                                                "count": "451"
                                                            },
                                                            {
                                                                "item": "0.06",
                                                                "count": "430"
                                                            },
                                                            {
                                                                "item": "0.08",
                                                                "count": "354"
                                                            },
                                                            {
                                                                "item": "0.07",
                                                                "count": "343"
                                                            },
                                                            {
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                                                                "count": "286"
                                                            },
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                                                                "count": "282"
                                                            },
                                                            {
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                                                            },
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                                                            },
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                                                            },
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                                                            },
                                                            {
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                                                            },
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                                                            },
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                                                            },
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                                                            }
                                                        ],
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                                                        "count": "27223",
                                                        "largest": "5.02",
                                                        "non_null": "27216",
                                                        "smallest": "0.00",
                                                        "cardinality": "213"
                                                    },
                                                    "renderTypeName": "number"
                                                },
                                                {
                                                    "id": 43302994,
                                                    "name": "SNOW",
                                                    "format": {},
                                                    "position": 5,
                                                    "fieldName": "snow",
                                                    "description": "",
                                                    "dataTypeName": "number",
                                                    "tableColumnId": 32230048,
                                                    "cachedContents": {
                                                        "top": [
                                                            {
                                                                "item": "0.0",
                                                                "count": "22362"
                                                            },
                                                            {
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                                                                "count": "41"
                                                            },
                                                            {
                                                                "item": "0.1",
                                                                "count": "34"
                                                            },
                                                            {
                                                                "item": "0.4",
                                                                "count": "30"
                                                            },
                                                            {
                                                                "item": "0.3",
                                                                "count": "25"
                                                            },
                                                            {
                                                                "item": "0.5",
                                                                "count": "22"
                                                            },
                                                            {
                                                                "item": "1.0",
                                                                "count": "20"
                                                            },
                                                            {
                                                                "item": "0.7",
                                                                "count": "19"
                                                            },
                                                            {
                                                                "item": "2.0",
                                                                "count": "14"
                                                            },
                                                            {
                                                                "item": "0.8",
                                                                "count": "14"
                                                            },
                                                            {
                                                                "item": "1.7",
                                                                "count": "13"
                                                            },
                                                            {
                                                                "item": "0.6",
                                                                "count": "12"
                                                            },
                                                            {
                                                                "item": "1.2",
                                                                "count": "12"
                                                            },
                                                            {
                                                                "item": "1.4",
                                                                "count": "11"
                                                            },
                                                            {
                                                                "item": "1.5",
                                                                "count": "11"
                                                            },
                                                            {
                                                                "item": "1.1",
                                                                "count": "10"
                                                            },
                                                            {
                                                                "item": "3.0",
                                                                "count": "10"
                                                            },
                                                            {
                                                                "item": "2.2",
                                                                "count": "8"
                                                            },
                                                            {
                                                                "item": "1.6",
                                                                "count": "8"
                                                            },
                                                            {
                                                                "item": "2.6",
                                                                "count": "7"
                                                            }
                                                        ],
                                                        "null": "4445",
                                                        "count": "27223",
                                                        "largest": "20.0",
                                                        "non_null": "22778",
                                                        "smallest": "0.0",
                                                        "cardinality": "65"
                                                    },
                                                    "renderTypeName": "number"
                                                },
                                                {
                                                    "id": 43302995,
                                                    "name": "SNWD",
                                                    "format": {},
                                                    "position": 6,
                                                    "fieldName": "snwd",
                                                    "description": "",
                                                    "dataTypeName": "number",
                                                    "tableColumnId": 32230049,
                                                    "cachedContents": {
                                                        "top": [
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                                                                "item": "0.0",
                                                                "count": "22446"
                                                            },
                                                            {
                                                                "item": "1.0",
                                                                "count": "106"
                                                            },
                                                            {
                                                                "item": "2.0",
                                                                "count": "78"
                                                            },
                                                            {
                                                                "item": "3.0",
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                                                            },
                                                            {
                                                                "item": "4.0",
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                                                            },
                                                            {
                                                                "item": "5.0",
                                                                "count": "19"
                                                            },
                                                            {
                                                                "item": "7.0",
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                                                            },
                                                            {
                                                                "item": "6.0",
                                                                "count": "10"
                                                            },
                                                            {
                                                                "item": "8.0",
                                                                "count": "8"
                                                            },
                                                            {
                                                                "item": "1.2",
                                                                "count": "6"
                                                            },
                                                            {
                                                                "item": "3.1",
                                                                "count": "6"
                                                            },
                                                            {
                                                                "item": "10.0",
                                                                "count": "4"
                                                            },
                                                            {
                                                                "item": "3.9",
                                                                "count": "3"
                                                            },
                                                            {
                                                                "item": "5.9",
                                                                "count": "3"
                                                            },
                                                            {
                                                                "item": "7.1",
                                                                "count": "3"
                                                            },
                                                            {
                                                                "item": "9.0",
                                                                "count": "3"
                                                            },
                                                            {
                                                                "item": "5.1",
                                                                "count": "2"
                                                            },
                                                            {
                                                                "item": "11.0",
                                                                "count": "2"
                                                            },
                                                            {
                                                                "item": "16.0",
                                                                "count": "2"
                                                            },
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                                                                "count": "2"
                                                            }
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                                                        "null": "4411",
                                                        "count": "27223",
                                                        "largest": "21.0",
                                                        "non_null": "22812",
                                                        "smallest": "0.0",
                                                        "cardinality": "22"
                                                    },
                                                    "renderTypeName": "number"
                                                },
                                                {
                                                    "id": 43302996,
                                                    "name": "TAVG",
                                                    "format": {},
                                                    "position": 7,
                                                    "fieldName": "tavg",
                                                    "description": "",
                                                    "dataTypeName": "text",
                                                    "tableColumnId": 32230050,
                                                    "cachedContents": {
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                                                        "null": "21101",
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                                                        "largest": "91",
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                                                    },
                                                    "renderTypeName": "text"
                                                },
                                                {
                                                    "id": 43302997,
                                                    "name": "TMAX",
                                                    "format": {},
                                                    "position": 8,
                                                    "fieldName": "tmax",
                                                    "description": "",
                                                    "dataTypeName": "number",
                                                    "tableColumnId": 32230051,
                                                    "cachedContents": {
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                                                    },
                                                    "renderTypeName": "number"
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                                                    "format": {},
                                                    "position": 9,
                                                    "fieldName": "tmin",
                                                    "description": "",
                                                    "dataTypeName": "number",
                                                    "tableColumnId": 32230052,
                                                    "cachedContents": {
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                                                                "count": "1072"
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                                                                "count": "1054"
                                                            },
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                                                            {
                                                                "item": "45",
                                                                "count": "1027"
                                                            },
                                                            {
                                                                "item": "52",
                                                                "count": "1015"
                                                            },
                                                            {
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                                                                "count": "981"
                                                            },
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                                                            },
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                                                            },
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                                                        "null": "2",
                                                        "count": "27223",
                                                        "largest": "73",
                                                        "non_null": "27221",
                                                        "smallest": "0",
                                                        "cardinality": "69"
                                                    },
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                                                }
                                            ],
                                            "columnName": null,
                                            "aggregationFunction": null
                                        },
                                        "datasetUid": "niqh-ewd6",
                                        "hierarchies": [],
                                        "parameterOverrides": {}
                                    }
                                }
                            ],
                            "createdAt": null,
                            "description": "",
                            "configuration": {
                                "axisLabels": {
                                    "top": false,
                                    "left": false,
                                    "right": false,
                                    "bottom": false
                                },
                                "localization": {},
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                                    {
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                                    },
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                                    },
                                    {
                                        "flex": null,
                                        "hide": false,
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                                        "colId": "tmin",
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                                        "width": 123.58999999999992,
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                                        "pivotIndex": null,
                                        "rowGroupIndex": null
                                    }
                                ],
                                "viewSourceDataLink": true,
                                "showDataTableControl": false
                            }
                        },
                        "dataset": {
                            "datasetUid": "niqh-ewd6"
                        },
                        "originalUid": "niqh-ewd6"
                    },
                    "layout": {
                        "h": 17,
                        "i": "clientSideId_2-block-item-index-1",
                        "w": 7,
                        "x": 4,
                        "y": 0,
                        "minH": 9.9,
                        "minW": 4,
                        "moved": false,
                        "static": false
                    }
                },
                {
                    "type": "html",
                    "value": "<h1><i>A Cool Story!!!</i><br></h1>",
                    "layout": {
                        "h": 6,
                        "i": "clientSideId_2-block-item-index-2",
                        "w": 4,
                        "x": 0,
                        "y": 15,
                        "minW": 2,
                        "moved": false,
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                    }
                }
            ],
            "presentable": true,
            "background_color": "#bed7e8"
        },
        {
            "layout": "12",
            "components": [
                {
                    "type": "html",
                    "value": "<div>&nbsp;asdf asdf asdf asdf sdf sadfasdf df df asdf asdf assdf asdfsdfsdfsddfdfd fasasdfasd fasdf asdf asdf asdf asd fasdf asd fasdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asd fsss<br></div><div>&nbsp;asdfasdf asdf asdf asdf asdsadfasdfasdfasdfasdfasdfasdfasdfsadfsadfasdfasdf asdf asdf asdf asdfas dfas dfasd fasdf&nbsp; asdf asdf asdf f asdf asdfas dfasdf asdf asdf asdf asdf asdf&nbsp;<br></div><div>\\asdf asdf asdfas dfasdf aslkjlkj df sadf asdfas dfasdf sadf sadf asdf asdf asdf sadf asdf sadf sadf sadf sadf sadf asdf sadf asssdasdf asdf asdf asdf ddddasdf asdf asdf asdf asdf asdf sasdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdfasd fasdf asdf asdf asdf asdfas dfasd<br></div><div>kf&nbsp; THe quick brown fox jumped over the lazy asddog. Packdfadfasdf my box with fjljliasdf asffdfgdfdfgdfgdsfg sdfgsdfgdfgddfgsdfg dsdfg dfg asdfsdf asdf asdf asdf sadf asdf asdf safd dasdfasdfasdfsdfasdfsdsadf sadf asdf asdf asdf saf sadf sadf sadf sadf sadf sadf sdf asdf sadf sdf sdf sdf sd fasdf asd fdf asdf asdf sadf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf sadf asdfasdf asdf asdf asdf asdf asdf asdf asdf sadf asdf as<br></div>",
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                    }
                },
                {
                    "type": "html",
                    "value": "<div>&nbsp;asdf asdf asdf asdf sdf sadfasdf df df asdf asdf assdf asdfsdfsdfsddfdfd fasasdfasd fasdf asdf asdf asdf asd fasdf asd fasdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asd fsss<br></div><div>&nbsp;asdfasdf asdf asdf asdf asdsadfasdfasdfasdfasdfasdfasdfasdfsadfsadfasdfasdf asdf asdf asdf asdfas dfas dfasd fasdf&nbsp; asdf asdf asdf f asdf asdfas dfasdf asdf asdf asdf asdf asdf&nbsp;<br></div><div>\\asdf asdf asdfas dfasdf aslkjlkj df sadf asdfas dfasdf sadf sadf asdf asdf asdf sadf asdf sadf sadf sadf sadf sadf asdf sadf asssdasdf asdf asdf asdf ddddasdf asdf asdf asdf asdf asdf sasdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdfasd fasdf asdf asdf asdf asdfas dfasd<br></div><div>kf&nbsp; THe quick brown fox jumped over the lazy asddog. Packdfadfasdf my box with fjljliasdf asffdfgdfdfgdfgdsfg sdfgsdfgdfgddfgsdfg dsdfg dfg asdfsdf asdf asdf asdf sadf asdf asdf safd dasdfasdfasdfsdfasdfsdsadf sadf asdf asdf asdf saf sadf sadf sadf sadf sadf sadf sdf asdf sadf sdf sdf sdf sd fasdf asd fdf asdf asdf sadf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asdf sadf asdfasdf asdf asdf asdf asdf asdf asdf asdf sadf asdf as<br></div>",
                    "layout": {
                        "h": 25,
                        "i": "clientSideId_5-block-item-index-1",
                        "w": 6,
                        "x": 0,
                        "y": 25,
                        "minW": 2,
                        "moved": false,
                        "static": false
                    }
                },
                {
                    "type": "html",
                    "value": "<div>update 1<br></div><div>udpate 2<br></div><div>asdf asdf aslldkf jas;lkdfj l;askdjf al;skdjf l;askdj fl;askdjf la;skdjf a;lskdjf a;lskdjfl;askdjf&nbsp; ;laskdjf ;laskdj fl;askdjf l;askdj flaskdj fl;askdj f;laskdj f;laskdj f;laskd jf;laskj df;l aksjdf ;laskdjf ;laskdj f;als kdjf ;laskdjf ;laskdj f ;laskdjf poawiejufpoa wieufpoawieur powqiuerpoqwieur poqw ieuropqwi europqwi eropqwieurpoqwieu rpoqwieurpoi;,xzmcv/.,zx mcv/.,zxmcv./, mzxcv.,zmxcv./,mzxcv./, mzxc.v/, mzxc./v,m zx/.c,vmzx/.c,v zx.c,vm xz.c/, vmzx./c, vmzx.c, vmzx.,cvm .xz,cvm lsakdf ;lzdsjf al;sdkfj a;lsdk fjas;ldfjsakdjfhaslkdfhlksajdlkasjdfjkhasdfjkhasgfkjhasdfjkhasdfkjashgfuwqyteruqyweruqwetriuweyriu wqeiru wqeiur ywqiuer yiwqe ropiwe uro[iweu j;lksajdfl;ksajdf l;<br></div><div><br></div><div>The quick brown fox jumped over the lazy dog. Pack my box with five dozen liquor jugs. Sphinx of black quartz, judge my vow.<br></div><div>asdfasdf asd fasdf asdf asdf asdfasdfasdfasdfasdf asdf asdf asdf asdf asdf asdf asdf asdf asdf asd fasdf asdf asdfasdfasdfas dfasdfpiasdjf ;laskdjf;laskjdf;lk ajsdf;lk asj df;l asjdf;l kasdf<br></div><div>&nbsp;asdfasd<br></div><div>f asdf asdf<br></div><div>f asdf asdfas dkjfa;sl djf;laksdjf;laskjdfl;aksjd;lf ajs ;dlf<br></div>",
                    "layout": {
                        "h": 32,
                        "i": "clientSideId_5-block-item-index-2",
                        "w": 5,
                        "x": 6,
                        "y": 0,
                        "minW": 2,
                        "moved": false,
                        "static": false
                    }
                }
            ],
            "presentable": false,
            "background_color": "#fdffac"
        },
        {
            "layout": "12",
            "components": [
                {
                    "type": "socrata.visualization.pieChart",
                    "value": {
                        "vif": {
                            "title": "",
                            "format": {
                                "type": "visualization_interchange_format",
                                "version": 4
                            },
                            "series": [
                                {
                                    "type": "pieChart",
                                    "color": {
                                        "primary": "#3f51b5",
                                        "highlight": "#cccccc",
                                        "secondary": "#e55100"
                                    },
                                    "label": null,
                                    "dataSource": {
                                        "type": "socrata.soql",
                                        "limit": 12,
                                        "filters": [],
                                        "measure": {
                                            "columnName": null,
                                            "aggregationFunction": "count"
                                        },
                                        "orderBy": {
                                            "sort": "desc",
                                            "parameter": "measure"
                                        },
                                        "dimension": {
                                            "columnName": "accountidentifier",
                                            "aggregationFunction": null
                                        },
                                        "datasetUid": "ivcn-sia2"
                                    },
                                    "showLegend": true
                                }
                            ],
                            "description": "",
                            "configuration": {
                                "showValueLabels": true,
                                "showOtherCategory": true,
                                "viewSourceDataLink": true,
                                "showValueLabelsAsPercent": false
                            }
                        },
                        "dataset": {
                            "datasetUid": "ivcn-sia2"
                        },
                        "originalUid": "ivcn-sia2"
                    },
                    "layout": {
                        "h": 15,
                        "i": "clientSideId_3-block-item-index-0",
                        "w": 5,
                        "x": 7,
                        "y": 0,
                        "minH": 9.9,
                        "minW": 4,
                        "moved": false,
                        "static": false
                    }
                },
                {
                    "type": "html",
                    "value": "<h1>A Headline!!!<br></h1>",
                    "layout": {
                        "h": 4,
                        "i": "clientSideId_3-block-item-index-1",
                        "w": 6,
                        "x": 0,
                        "y": 12,
                        "minW": 2,
                        "moved": false,
                        "static": false
                    }
                },
                {
                    "type": "html",
                    "value": "<div>asdfasdfasdfasdfasdf asdf asdf asdf asdf asdf asdf asdfasdfasdf sadf sadf asdf asdf asdf asdfas dfasdf asdf asdf asdfa sSdasdfaWEWERWERWERWERWERWER<br></div><div><a href=\"https://github.com/socrata/platform-ui/pull/15056/files\">https://github.com/socrata/platform-ui/pull/15056/files</a><br></div><div>asdf asdf asdasd fasdf asdfasdfas dfasdfas dfasd fasdf asdf asdf asdf asdfa sdfasd fasdf asdf sadf asdf asdfsadf asdf asdfas dfsadf sadf asdf asdf asddddddddadsdfasdf asdfasdf ssfdf asdf sd<br></div>",
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                        "w": 6,
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                        "y": 0,
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                        "static": false
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                }
            ],
            "presentable": false,
            "background_color": "#f8b2b8"
        },
        {
            "layout": "12",
            "components": [
                {
                    "type": "socrata.visualization.timelineChart",
                    "value": {
                        "vif": {
                            "title": "",
                            "format": {
                                "type": "visualization_interchange_format",
                                "version": 4
                            },
                            "series": [
                                {
                                    "type": "timelineChart",
                                    "color": {
                                        "primary": "#3f51b5",
                                        "highlight": "#cccccc"
                                    },
                                    "label": null,
                                    "dataSource": {
                                        "type": "socrata.soql",
                                        "filters": [],
                                        "measure": {
                                            "columnName": "snow",
                                            "aggregationFunction": "sum"
                                        },
                                        "orderBy": {
                                            "sort": "asc",
                                            "parameter": "dimension"
                                        },
                                        "dimension": {
                                            "columnName": "date",
                                            "aggregationFunction": null
                                        },
                                        "precision": "year",
                                        "datasetUid": "niqh-ewd6",
                                        "dateDisplayFormat": "YYYY"
                                    }
                                }
                            ],
                            "description": "",
                            "configuration": {
                                "xAxisScalingMode": "fit",
                                "viewSourceDataLink": true,
                                "treatNullValuesAsZero": true
                            }
                        },
                        "dataset": {
                            "datasetUid": "niqh-ewd6"
                        },
                        "originalUid": "niqh-ewd6"
                    },
                    "layout": {
                        "h": 10,
                        "i": "clientSideId_5-block-item-index-0",
                        "w": 6,
                        "x": 0,
                        "y": 0,
                        "minH": 9.9,
                        "minW": 4,
                        "moved": false,
                        "static": false
                    }
                },
                {
                    "type": "html",
                    "value": "<h1>Another Heading!<br></h1>",
                    "layout": {
                        "h": 3,
                        "i": "clientSideId_5-block-item-index-1",
                        "w": 5,
                        "x": 6,
                        "y": 0,
                        "minW": 2,
                        "moved": false,
                        "static": false
                    }
                },
                {
                    "type": "html",
                    "value": "<div><i>This is placeholder text. To get started, remove it and input your own information!</i> Or you could just leave this bit of text right here to experimednt witkh the design and layout of your story. Go ahead, add another! Using a variety of layouts and visual arrangefsdments will make your story stand out. Or that's what we like to think. This explains why we have all of these content blocks for you to fplay with. So get after it, author! Tell your story. It's going to be magnificent!dlllll<br></div>",
                    "layout": {
                        "h": 10,
                        "i": "clientSideId_5-block-item-index-2",
                        "w": 4,
                        "x": 1,
                        "y": 10,
                        "minW": 2,
                        "moved": false,
                        "static": false
                    }
                }
            ],
            "presentable": true,
            "background_color": "#f0f2ff"
        }
    ]
}

var myCopy = null;

function recursiveDeepCopy(o) {
    var newO,
      i;
  
    if (typeof o !== 'object') {
      return o;
    }
    if (!o) {
      return o;
    }
  
    if ('[object Array]' === Object.prototype.toString.apply(o)) {
      newO = [];
      for (i = 0; i < o.length; i += 1) {
        newO[i] = recursiveDeepCopy(o[i]);
      }
      return newO;
    }
  
    newO = {};
    for (i in o) {
      if (o.hasOwnProperty(i)) {
        newO[i] = recursiveDeepCopy(o[i]);
      }
    }
    return newO;
  }

Tests:

Lodash cloneDeep
myCopy = _.cloneDeep(MyLargerObject);
Native structuredClone
myCopy = structuredClone(MyLargerObject);
recursiveDeepCopy
myCopy = recursiveDeepCopy(MyLargerObject);
Json Clone
myCopy = JSON.parse(JSON.stringify(MyLargerObject));

Run results for: Lodash cloneDeep vs structuredClone vs recursiveDeepCopy vs JSON clone (larger object)

https://developer.mozilla.org/en-US/docs/Web/API/structuredClone

Lodash cloneDeep

Native structuredClone

recursiveDeepCopy

Json Clone