过滤器嵌套数组

const usersWithPets = [
  { name: 'Alice', age: 25, pets: ['dog', 'cat'] },
  { name: 'Bob', age: 17, pets: ['fish'] },
  { name: 'Charlie', age: 30, pets: [] }
];

const filteredUsers = usersWithPets.filter(user => user.age > 18).map(user => {
  return {
    ...user,
    pets: user.pets.filter(pet => pet !== 'fish') // 假设我们不想保留宠物为鱼的用户
  };
});

console.log(filteredUsers);

const usersWithPets = [
  { name: 'Alice', age: 25, pets: ['dog', 'cat'] },
  { name: 'Bob', age: 17, pets: ['fish'] },
  { name: 'Charlie', age: 30, pets: [] }
];

const filteredUsers = usersWithPets
  .filter(user => user.age > 18)
  .map(user => ({
    ...user,
    pets: user.pets.includes('fish') ? user.pets.filter(pet => pet !== 'fish') : user.pets
  }));

console.log(filteredUsers);