{"ScriptPreparationCode":"const a = { a: 1, b: 2 };\r\nconst b = { b: 3, c: 4 };","TestCases":[{"Name":"Set","Code":"const s = new Set([\r\n ...Object.keys(a),\r\n ...Object.keys(b),\r\n ]);\r\n\r\nconst res = Array.from(s);","IsDeferred":false},{"Name":"Merge","Code":"const c = { ...a, ...b };\r\nconst res = Object.keys(c);","IsDeferred":false},{"Name":"For","Code":"const s = new Set();\r\nfor(const x in a) s.add(x);\r\nfor(const x in b) s.add(x);\r\nconst res = Array.from(s);","IsDeferred":false}]}