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