设计一个用户认证类，使用策略模式实现用户名密码认证、短信验证码认证、第三方登录认证，写出程序源代码和类图

程序源代码：

// 用户认证接口
interface IAuthStrategy {
authenticate(credentials: any): boolean;
}

// 用户名密码认证策略
class UsernamePasswordAuth implements IAuthStrategy {
authenticate(credentials: any): boolean {
// 实现用户名密码认证逻辑
console.log('使用用户名密码认证');
return true;
}
}

// 短信验证码认证策略
class SmsCodeAuth implements IAuthStrategy {
authenticate(credentials: any): boolean {
// 实现短信验证码认证逻辑
console.log('使用短信验证码认证');
return true;
}
}

// 第三方登录认证策略
class ThirdPartyAuth implements IAuthStrategy {
authenticate(credentials: any): boolean {
// 实现第三方登录认证逻辑
console.log('使用第三方登录认证');
return true;
}
}

// 用户认证类
class UserAuth {
private authStrategy: IAuthStrategy;

constructor(authStrategy: IAuthStrategy) {
this.authStrategy = authStrategy;
}

authenticate(credentials: any): boolean {
return this.authStrategy.authenticate(credentials);
}
}

// 使用示例
const userAuth = new UserAuth(new UsernamePasswordAuth());
userAuth.authenticate({ username: 'admin', password: 'admin123' });

const userAuth2 = new UserAuth(new SmsCodeAuth());
userAuth2.authenticate({ phone: '13888888888', code: '123456' });

const userAuth3 = new UserAuth(new ThirdPartyAuth());
userAuth3.authenticate({ provider: 'wechat', openid: 'wx123456' });

类图：

+----------------+        +-----------------+
|   IAuthStrategy|<-------|UsernamePasswordAuth|
+----------------+        +-----------------+
|authenticate()  |        |authenticate()   |
+----------------+        +-----------------+

+----------------+        +-------------+
|   IAuthStrategy|<-------|   SmsCodeAuth|
+----------------+        +-------------+
|authenticate()  |        |authenticate()|
+----------------+        +-------------+

+----------------+        +---------------+
|   IAuthStrategy|<-------|  ThirdPartyAuth|
+----------------+        +---------------+
|authenticate()  |        |authenticate() |
+----------------+        +---------------+

+------------+        +---------+
|  UserAuth  |--------|IAuthStrategy|
+------------+        +---------+
|authenticate()|       |authenticate()|
+------------+        +---------+

注：类图中未显示的类包括 Object 等基础类。