{"ScriptPreparationCode":"var arr = new Array(15000);\r\narr.fill({ id: 0 });\r\narr = arr.map((el, idx) =\u003E el.id = idx);\r\nvar foo =1;","TestCases":[{"Name":"findIndex","Code":"var index = arr.findIndex(item=\u003Eitem.id===foo);","IsDeferred":false},{"Name":"includes","Code":"var index = arr.map(item=\u003Eitem.id).includes(foo);","IsDeferred":false},{"Name":"map and indexOf","Code":"var index = arr.map(o =\u003E o.id).indexOf(foo);","IsDeferred":false}]}