{"ScriptPreparationCode":"var sampleArr = new Array(50000).fill(\u0027a\u0027)","TestCases":[{"Name":"Concat","Code":"var result = sampleArr.concat([\u0027b\u0027,\u0027c\u0027])","IsDeferred":false},{"Name":"Spread","Code":"var result = [...sampleArr, \u0027b\u0027,\u0027c\u0027]","IsDeferred":false}]}