{"ScriptPreparationCode":"var und = undefined;\r\nvar bool = true;\r\nvar element;","TestCases":[{"Name":"Native","Code":"element = !!und \u0026\u0026 typeof bool === \u0027boolean\u0027;","IsDeferred":false},{"Name":"Lodash.js","Code":"element = !_.isUndefined(und) \u0026\u0026 !_.isBoolean(bool);","IsDeferred":false}]}