获取数组中的名称和键名，而不是以列表形式输出

const data = [
  { name: 'Alice', age: 25 },
  { name: 'Bob', age: 30 },
  { name: 'Charlie', age: 35 }
];

const namesAndKeys = data.map((item, index) => {
  return {
    index: index,
    name: item.name,
    keys: Object.keys(item)
  };
});

console.log(namesAndKeys);

const data = [];

const namesAndKeys = data.length > 0 ? data.map((item, index) => {
  return {
    index: index,
    name: item.name,
    keys: Object.keys(item)
  };
}) : [];

console.log(namesAndKeys);

const data = [
  { name: 'Alice' },
  { name: 'Bob', age: 30 },
  { name: 'Charlie', age: 35 }
];

const namesAndKeys = data.map((item, index) => {
  return {
    index: index,
    name: item.name || 'Unknown',
    keys: Object.keys(item)
  };
});

console.log(namesAndKeys);