将 XML 转换为 JSON 后删除其他大括号

问：

我使用 将以下 xml 字符串转换为xml2jsjson

export async function parseXml(xmlString: string) {
  return await new Promise((resolve, reject) =>
    parseString(xmlString, (err: any, jsonData: Book) => {
      if (err) {
        reject(`Unable to parse to xml due to: ${err}`);
      }
      console.log(JSON.stringify(jsonData));
      resolve([jsonData]);
    })
  );
}

下面是我尝试转换的xml

<books>
<book>
    <title>harry potter</title>
    <author>JK Rowling</author>
    <isbn>12fgrwgrgrgrtgrg</isbn>
    <quantity>10</quantity>
    <price>4.5</price>
</book>
<book>
    <title>goosbumps</title>
    <author>R.L Stein</author>
    <isbn>12fgrwg12334tgrg</isbn>
    <quantity>6</quantity>
    <price>2.5</price>
</book>
</books>

但是，一旦我通过函数传递 xml 字符串，我就会得到以下输出

{
  "books": {
    "book": [
      {
        "title": [
          "harry potter"
        ],
        "author": [
          "JK Rowling"
        ],
        "isbn": [
          "12fgrwgrgrgrtgrg"
        ],
        "quantity": [
          "10"
        ],
        "price": [
          "4.5"
        ]
      },
      {
        "title": [
          "goosbumps"
        ],
        "author": [
          "R.L Stein"
        ],
        "isbn": [
          "12fgrwg12334tgrg"
        ],
        "quantity": [
          "6"
        ],
        "price": [
          "2.5"
        ]
      }
    ]
  }
}

但是，我想要如下内容

  {
    book: {
      title: 'harry potter',
      author: 'JK Rowling',
      isbn: '12fgrwgrgrgrtgrg'
    },

    stock: {
      quantity: 10,
      price: 4.5
    }
  },

  {
    book: {
      title: 'goosbumps',
      author: 'R.L Stein',
      isbn: '12fgrwg12334tgrg'
    },
    stock: {
      quantity: 6,
      price: 2.5
    }
  }
];

有没有办法在不进行一些复杂的字符串替换的情况下将其转换为我想要的格式？