将嵌套哈希数组转换为非嵌套哈希平面数组

const nestedHashArray = [
  {
    id: 1,
    name: 'Alice',
    hobbies: ['reading', 'painting'],
    address: {
      street: '123 Main St',
      city: 'New York',
      country: 'USA'
    }
  },
  {
    id: 2,
    name: 'Bob',
    hobbies: ['coding', 'gaming'],
    address: {
      street: '456 Elm St',
      city: 'San Francisco',
      country: 'USA'
    }
  }
];

function flattenNestedHashArray(nestedArray) {
  const flatArray = [];

  function flatten(obj, prefix = '') {
    for (let key in obj) {
      if (typeof obj[key] === 'object' && !Array.isArray(obj[key])) {
        flatten(obj[key], prefix + key + '.');
      } else if (Array.isArray(obj[key])) {
        obj[key].forEach((item, index) => {
          flatten(item, prefix + key + '[' + index + '].');
        });
      } else {
        flatArray[prefix + key] = obj[key];
      }
    }
  }

  nestedArray.forEach((item, index) => {
    flatten(item, '[' + index + '].');
  });

  return flatArray;
}

const flatHashArray = flattenNestedHashArray(nestedHashArray);
console.log(flatHashArray);