{"ScriptPreparationCode":"var arr = Array(10).fill({items: Array(1000).fill(0)})","TestCases":[{"Name":"reduce with concat","Code":"arr.reduce((acc, x) =\u003E acc \u002B x.items.length)","IsDeferred":false},{"Name":"flatMap","Code":"arr.flatMap(x =\u003E x.items).length","IsDeferred":false}]}