{"ScriptPreparationCode":"var array = Array.from(Array(1000).keys());\r\nvar array2 = Array.from(Array(20).keys())","TestCases":[{"Name":"arrayUnshift123","Code":"array2.forEach((v) =\u003E array.unshift(v));","IsDeferred":false},{"Name":"arrayConcat123","Code":"array = array2.concat(array)","IsDeferred":false},{"Name":"arraySpread123","Code":"array = [...array2, ...array]","IsDeferred":false}]}