{"ScriptPreparationCode":"var arr = Array(10_000).fill(undefined).map((_, index) =\u003E index \u002B 1);\r\nvar obj = Object.fromEntries(arr.map((v) =\u003E [v, v]));\r\n","TestCases":[{"Name":"Object.hasOwnProperty","Code":"arr.map((v) =\u003E obj.hasOwnProperty(v));","IsDeferred":false},{"Name":"in","Code":"arr.map((v) =\u003E v in obj);","IsDeferred":false}]}