proxy?.$refs.userLoginForm.validate(async (valid: any) => {}) 帮我不全代码，然后添加ts强制校验

interface LoginForm {
  validate(callback: (valid: any) => void): void;
}

interface Proxy {
  $refs: {
    userLoginForm: LoginForm;
  };
}

const proxy: Proxy | undefined = /* your proxy object */;

if (proxy?.$refs.userLoginForm) {
  proxy.$refs.userLoginForm.validate(async (valid: any) => {
    // Your code here
  });
}