根据键将json数组划分为json数组

[
  {"name": "Alice", "age": 25, "gender": "female"},
  {"name": "Bob", "age": 30, "gender": "male"},
  {"name": "Charlie", "age": 28, "gender": "male"},
  {"name": "David", "age": 35, "gender": "male"},
  {"name": "Eve", "age": 27, "gender": "female"}
]

[
  [
    {"name": "Alice", "age": 25, "gender": "female"},
    {"name": "Eve", "age": 27, "gender": "female"}
  ],
  [
    {"name": "Bob", "age": 30, "gender": "male"},
    {"name": "Charlie", "age": 28, "gender": "male"},
    {"name": "David", "age": 35, "gender": "male"}
  ]
]

exports.main_handler = async (event, context, callback) => {
  const jsonArray = event.jsonArray; // 假设传入的JSON数组保存在event.jsonArray中
  const key = event.key; // 假设传入的键保存在event.key中

  const result = {};

  jsonArray.forEach((obj) => {
    const value = obj[key];
    if (!result[value]) {
      result[value] = [];
    }
    result[value].push(obj);
  });

  return result;
};