{"ScriptPreparationCode":"var array = [1,2,3];","TestCases":[{"Name":"arrayUnshift123","Code":"let arr = array.slice(0).unshift(0);","IsDeferred":false},{"Name":"arrayConcat123","Code":"let arr = [0].concat(array)","IsDeferred":false},{"Name":"arraySpread123","Code":"let arr = [0, ...array]","IsDeferred":false}]}