{"ScriptPreparationCode":"var a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];\r\nvar b = new Set([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);\r\nvar c = new Map([[1, 1], [2, 2], [3, 3], [4, 4], [5, 5], [6, 6], [7, 7], [8, 8], [9, 9], [10, 10]]);\r\nvar d = {1: 1, 2: 2, 3: 3, 4: 4, 5: 5, 6: 6, 7: 7, 8: 8, 9: 9, 10: 10};","TestCases":[{"Name":"Array includes","Code":"return a.includes(9);","IsDeferred":false},{"Name":"Set has","Code":"return b.has(9);","IsDeferred":false},{"Name":"Map has","Code":"return c.has(9);","IsDeferred":false},{"Name":"object key","Code":"return \u00229\u0022 in d","IsDeferred":false}]}