{"ScriptPreparationCode":"window.count = 1000000000;\r\nwindow.x = { }\r\nfor (let i = 0; i \u003C window.count; i\u002B\u002B) { x[i] = i; }","TestCases":[{"Name":"undefined","Code":"for (let i = 0; i \u003C window.count; i\u002B\u002B) { x[i] = undefined; }","IsDeferred":false},{"Name":"delete","Code":"for (let i = 0; i \u003C window.count; i\u002B\u002B) { delete x[i]; }","IsDeferred":false}]}