{"ScriptPreparationCode":"var arr = Array.from({length: 1000000}).map((_,i)=\u003E({id: i}));","TestCases":[{"Name":"map with entries","Code":"new Map(arr.entries())","IsDeferred":false},{"Name":"map with for of","Code":"const m = new Map();\r\nfor (let item in arr) {\r\n m.set(item.id, item);\r\n}","IsDeferred":false}]}