{"ScriptPreparationCode":"var MyObject = {\r\n description: \u0027Creates a deep copy of source, which should be an object or an array.\u0027,\r\n myNumber: 123456789,\r\n myBoolean: true,\r\n jayson: {\r\n stringify: \u0027JSON.stringify() method converts a JavaScript value to a JSON string....\u0027,\r\n parse: \u0027JSON.parse() method parses a JSON string...\u0027,\r\n jayson: {\r\n stringify: \u0027JSON.stringify() method converts a JavaScript value to a JSON string....\u0027,\r\n parse: \u0027JSON.parse() method parses a JSON string...\u0027,\r\n jayson: {\r\n stringify: \u0027JSON.stringify() method converts a JavaScript value to a JSON string....\u0027,\r\n parse: \u0027JSON.parse() method parses a JSON string...\u0027,\r\n jayson: {\r\n stringify: \u0027JSON.stringify() method converts a JavaScript value to a JSON string....\u0027,\r\n parse: \u0027JSON.parse() method parses a JSON string...\u0027\r\n }\r\n }\r\n }\r\n }\r\n};\r\n\r\n// pulled this from https://github.com/nodejs/node/issues/34355#issuecomment-658394617\r\nfunction deepClone(o) {\r\n if (typeof o !== \u0022object\u0022) {\r\n return o\r\n }\r\n if (!o) {\r\n return o\r\n }\r\n\r\n // https://jsperf.com/deep-copy-vs-json-stringify-json-parse/25\r\n if (Array.isArray(o)) {\r\n const newO = []\r\n for (let i = 0; i \u003C o.length; i \u002B= 1) {\r\n const val = !o[i] || typeof o[i] !== \u0022object\u0022 ? o[i] : deepClone(o[i])\r\n newO[i] = val === undefined ? null : val\r\n }\r\n return newO\r\n }\r\n\r\n const newO = {}\r\n for (const i of Object.keys(o)) {\r\n const val = !o[i] || typeof o[i] !== \u0022object\u0022 ? o[i] : deepClone(o[i])\r\n if (val === undefined) {\r\n continue\r\n }\r\n newO[i] = val\r\n }\r\n return newO\r\n }\r\nvar myCopy = null;\r\n\r\nvar arr = []\r\nvar arr2 = []\r\nfor (let i = 0; i \u003C=10000; i\u002B\u002B) {\r\n arr.push(structuredClone(MyObject))\r\n}","TestCases":[{"Name":"Lodash cloneDeep","Code":"myCopy = _.cloneDeep(arr);","IsDeferred":false},{"Name":"Native structuredClone","Code":"myCopy = structuredClone(arr);","IsDeferred":false},{"Name":"custom deeClone","Code":"myCopy = deepClone(arr);","IsDeferred":false}]}