{"ScriptPreparationCode":"var arr1 = [];\r\nfor (let i=0; i\u003C100; \u002B\u002Bi)\r\n\tarr1.push(i);\r\n\r\nvar arr2 = [];\r\nfor (let i=0; i\u003C100; \u002B\u002Bi)\r\n\tarr2.push(i);\r\n","TestCases":[{"Name":"unshift an array","Code":"arr1.unshift(...arr2)","IsDeferred":false},{"Name":"concat an array","Code":"arr1.concat(arr2)","IsDeferred":false},{"Name":"spread on array","Code":"let arr3 = [...arr1, ...arr2]","IsDeferred":false},{"Name":"unshift.apply","Code":"arr1.unshift.apply(arr1, arr2);","IsDeferred":false}]}