我要把它用在：

[
   {
      "questionId":1,
      "level":1,
      "difficultyLevel":1.1,
      "stage":1,
      "item #":1,
      "targetWord":"example1",
      "category":"hard"
   },
   {
      "questionId":2,
      "level":1,
      "difficultyLevel":1.1,
      "stage":1,
      "item #":2,
      "targetWord":"example2",
      "category":"hard"
   },
   {
      "questionId":3,
      "level":1,
      "difficultyLeveluest":1.1,
      "stage":1,
      "item #":3,
      "targetWord":"example3",
      "category":"soft"
   },
   {
      "questionId":4,
      "level":1,
      "difficultyLevel":"1.1b",
      "stage":1,
      "item #":4,
      "targetWord":"example4",
      "category":"hard"
   },
   {
      "questionId":5,
      "level":1,
      "difficultyLevel":"1.1b",
      "stage":1,
      "item #":5,
      "targetWord":"example5",
      "category":"soft"
   },
   {
      "questionId":6,
      "level":1,
      "difficultyLevel":"1.1b",
      "stage":1,
      "item #":6,
      "targetWord":"example6",
      "category":"hard"
   },
   {
      "questionId":7,
      "level":1,
      "difficultyLevel":1.2,
      "stage":1,
      "item #":7,
      "targetWord":"example7",
      "category":"hard"
   },
   {
      "questionId":8,
      "level":1,
      "difficultyLevel":1.2,
      "stage":1,
      "item #":8,
      "targetWord":"example8",
      "category":"soft"
   },
   {
      "questionId":9,
      "level":1,
      "difficultyLevel":1.2,
      "stage":1,
      "item #":9,
      "targetWord":"example9",
      "category":"soft"
   },
   {
      "questionId":10,
      "level":1,
      "difficultyLevel":"1.2b",
      "stage":1,
      "item #":1,
      "targetWord":"example10",
      "category":"hard"
   },
   {
      "questionId":11,
      "level":1,
      "difficultyLevel":"1.2b",
      "stage":1,
      "item #":2,
      "targetWord":"example11",
      "category":"hard"
   },
   {
      "questionId":12,
      "level":1,
      "difficultyLevel":"1.2b",
      "stage":1,
      "item #":3,
      "targetWord":"example12",
      "category":"soft"
   }
]

我需要重新格式化它，并按级别将其分开，我认为它看起来像这样应该是有意义的：

levels{
  1{
    difficulty{
      1.1{
        questions[
           {
             questionId
             targetWord
             item
           }
           {
             questionId
             targetWord
             item
           }
           {
             questionId
             targetWord
             item
           }
         ]
       }
      1.1b{
        questions[
           {
             questionId
             targetWord
             item
           }
           {
             questionId
             targetWord
             item
           }
           {
             questionId
             targetWord
             item
           }
         ]
       }
     }
  }
  2{
    difficulty{
      1.2{
        questions[
           {
             questionId
             targetWord
             item
           }
           {
             questionId
             targetWord
             item
           }
           {
             questionId
             targetWord
             item
           }
         ]
       }
      1.2b{
        questions[
           {
             questionId
             targetWord
             item
           }
           {
             questionId
             targetWord
             item
           }
           {
             questionId
             targetWord
             item
           }
         ]
       }
     }
  }
}

但我真的不知道该怎么做......以下是我能做的：

{
  levels: {
    '1': {
      dificulty: '1.1b'
      questionId: 6,
      targetWord: 'example6',
    },
    '2': {
      dificulty: '1.2b'
      questionId: 12,
      targetWord: 'example12',
    }
  }
}

上面的代码片段是通过以下方式实现的：

const setLevels = (levelMapData) => {
  const levelMap = {};

  levelMapData
    .forEach(({ level, questionId, targetWord, dificultyLevel }) => {
      levelMap[level] = {
        dificultyLevel,
        questionId, 
        targetWord,
      };
    });

  return levelMap;
}

module.exports = async ([levelMapData]) => {
  const levels = setLevels(levelMapData);

  const curriculum = {
    levels,
  };

  return curriculum;
};

我怎样才能使它的格式正确？请帮助。并提前非常感谢你。