{"ScriptPreparationCode":"var arr = Array.from({length: 10000}, () =\u003E Math.random() \u003E 0.5 ? null : \u0022foo\u0022);","TestCases":[{"Name":"filter(Boolean)","Code":"const numTruthy = arr.filter(Boolean).length;\r\nconsole.log(numTruthy);","IsDeferred":false},{"Name":"filter function","Code":"const numTruthy = arr.filter(x =\u003E !!x).length;\r\nconsole.log(numTruthy);","IsDeferred":false}]}