HarmonyOS 无法使用class-transformer中的@Type注解

import { Type, Expose, instanceToPlain, plainToClass, instanceToInstance } from 'class-transformer';  
export class User {  
  @Expose({name: 'user_id'})  
  uid: number = 0;  
  @Expose({name: 'user_name'})  
  userName: string = '';  
  @Expose({name: 'source_type'})  
  sourceType: string = '';  
  @Expose({name: 'is_leader'})  
  isLeader: boolean = false;  
  @Expose({name: 'role_name'})  
  roleName: string = '';  
  constructor(id: number, name: string, type: string, isLeader: boolean, roleName: string) {  
    this.uid = id;  
    this.userName = name;  
    this.sourceType = type;  
    this.isLeader = isLeader;  
    this.roleName = roleName;  
  }  
  static fromPlain(plain: object): User {  
    return plainToClass(User, plain);  
  }  
  toJson(): string {  
    return JSON.stringify(instanceToPlain(this));  
  }  
}  
export class UserResponse {  
  @Type(() => User)  
  user: User;  
  constructor(user: User) {  
    this.user = user;  
  }  
  static fromPlain(plain: object): UserResponse {  
    return plainToClass(UserResponse, plain);  
  }  
  toJson(): string {  
    return JSON.stringify(instanceToPlain(this));  
  }  
}

Pid:34987  
Uid:20020002  
Reason:TypeError  
Error name:TypeError  
Error message:is not callable  
SourceCode:  
        var reflectedType = Reflect.getMetadata('design:type', target, propertyName);  
                            ^  
Stacktrace:  
SourceMap is not initialized yet   
    at anonymous (oh_modules/.ohpm/class-transformer@0.5.1/oh_modules/class-transformer/esm5/decorators/type.decorator.js:11:29)  
    at func_main_0 (commons/datastore/src/main/ets/model/User.ets:1:1)