如何将带有点符号和数组的字符串转换为json？

const str = "{'name': 'John', 'age': 30, 'friends[0]': 'Alice', 'friends[1]': 'Bob'}";

// Step 1: 解析字符串为对象
const obj = JSON.parse(str);

// Step 2: 处理点符号
Object.keys(obj).forEach(key => {
  if (key.includes('.')) {
    const parts = key.split('.');
    let currentObj = obj;
    for (let i = 0; i < parts.length - 1; i++) {
      const part = parts[i];
      if (!currentObj[part]) {
        currentObj[part] = {};
      }
      currentObj = currentObj[part];
    }
    currentObj[parts[parts.length - 1]] = obj[key];
    delete obj[key];
  }
});

// Step 3: 转换为JSON字符串
const jsonStr = JSON.stringify(obj);

console.log(jsonStr);