{"ScriptPreparationCode":null,"TestCases":[{"Name":"object","Code":"const set = {a: null, b: null, c: null, d: null, e: null}\r\nconst has_key = !!set[\u0027c\u0027]","IsDeferred":false},{"Name":"set","Code":"const set = new Set([\u0027a\u0027, \u0027b\u0027, \u0027c\u0027, \u0027d\u0027, \u0027e\u0027])\r\nconst has_key = set.has(\u0027c\u0027)","IsDeferred":false}]}