{"ScriptPreparationCode":"const size = 10000;\r\nvar obj = {};\r\nvar set = new Set();\r\nvar map = new Map();\r\nvar arr = [];\r\n\r\nfor (let i=0; i \u003C size; i\u002B\u002B) {\r\n const item = \u0060item${i}\u0060;\r\n obj[item] = true;\r\n set.add(item);\r\n map.set(item, true);\r\n arr.push(item);\r\n \r\n}","TestCases":[{"Name":"obj","Code":"let copy = {...obj}\r\ndelete copy.item5000","IsDeferred":false},{"Name":"set","Code":"let copy = new Set(set)\r\ncopy.delete(\u0022item5000\u0022)","IsDeferred":false},{"Name":"map","Code":"let copy = new Map(map)\r\ncopy.set(\u0022item5000\u0022, undefined);","IsDeferred":false},{"Name":"array","Code":"let copy = [...arr]\r\ncopy[5000] = undefined;","IsDeferred":false}]}