{"ScriptPreparationCode":"var arr = Array(10_000).fill({arr: [0,1]})","TestCases":[{"Name":"reduce with concat","Code":"arr.reduce((acc, x) =\u003E {acc.push(...x.arr); return acc}, [])","IsDeferred":false},{"Name":"flatMap","Code":"arr.flatMap(x =\u003E x.arr)","IsDeferred":false}]}