{"ScriptPreparationCode":"const tagIds = [];\r\nfor (let i = 0; i \u003C= 10000; i\u002B\u002B) {\r\n tagIds.push({menu_item_data_id: i});\r\n}","TestCases":[{"Name":"_.groupBy","Code":"const tagIdsByMenuItemId = _.groupBy(tagIds, (tagId) =\u003E tagId.menu_item_data_id);","IsDeferred":false},{"Name":"JS groupBy","Code":"const tagIdsByMenuItemId = {};\r\nfor (const tagId of tagIds) {\r\n if (tagIdsByMenuItemId[tagId.menu_item_data_id] === undefined) {\r\n tagIdsByMenuItemId[tagId.menu_item_data_id] = [];\r\n }\r\n tagIdsByMenuItemId[tagId.menu_item_data_id].push(tagId.menu_item_data_id);\r\n}","IsDeferred":false}]}