获取对象的所有KeyPaths

function getAllKeyPaths(obj, parentKey = '') {
  let keyPaths = [];
  
  for (let key in obj) {
    if (typeof obj[key] === 'object' && obj[key] !== null) {
      const nestedKeyPaths = getAllKeyPaths(obj[key], `${parentKey}${key}.`);
      keyPaths.push(...nestedKeyPaths);
    } else {
      keyPaths.push(`${parentKey}${key}`);
    }
  }
  
  return keyPaths;
}

// 示例对象
const obj = {
  name: 'John',
  age: 30,
  address: {
    street: '123 Main St',
    city: 'New York',
    country: 'USA'
  }
};

// 获取所有KeyPaths
const keyPaths = getAllKeyPaths(obj);
console.log(keyPaths);

[
  "name",
  "age",
  "address.street",
  "address.city",
  "address.country"
]