{"ScriptPreparationCode":"var a = new Array(1000000).fill(undefined).map((_, i) =\u003E i)","TestCases":[{"Name":"Using array.concat","Code":"var b = a.slice(0, 500000).concat(a.slice(500001))","IsDeferred":false},{"Name":"Using array.spread","Code":"var b = [...a.slice(0, 500000), ...a.slice(500001)]","IsDeferred":false}]}