将数据从一个数组复制到另一个数组会导致结果数组仅包含输入数组中最后一项的重复条目

我正在尝试编写一个异步函数，该函数从 Music 类型的数组中创建一个 MusicWithMetadata 类型的新数组。我已经用输入数组中的 6 个条目对其进行了测试。出于某种原因，结果数组仅包含输入数组最后一项的 6 个条目。

private async getMusicWithMetadata(music: Music): Promise<MusicWithMetadata> {
    const metadata = await musicMedatada.parseFile(music.src);
    const musicWithMetadata = NullMusicWithMetadata;
    musicWithMetadata.id = music.id;
    musicWithMetadata.src = music.src;
    musicWithMetadata.src_type = music.src_type;
    musicWithMetadata.title =
      metadata.common.title !== undefined
        ? metadata.common.title
        : this.getFileNameWithoutExtension(music.src);
    musicWithMetadata.artists = metadata.common.artists;
    musicWithMetadata.album = metadata.common.album;
    musicWithMetadata.albumArt =
      metadata.common.picture !== undefined
        ? `data:${
            metadata.common.picture[0].format
          };base64,${metadata.common.picture[0].data.toString('base64')}`
        : metadata.common.picture;
    return musicWithMetadata;
  }

 private async getMusicArrayWithMetadata(musicList: Array<Music>) {
    const test1 = musicList.map(async (music) => {
      const musicWithMetadata = await this.getMusicWithMetadata(music);
      return Promise.resolve().then(() => {
        console.log(musicWithMetadata);
        return musicWithMetadata;
      });
    });

    await Promise.all(test1).then((music) => {
      console.log(music);
    });
  }

我在这里调用方法。

 public async queueAll() {
    const musicList = await this.musicRepository.getAll();
    MusicManager.queue = await this.getMusicArrayWithMetadata(musicList);
    MusicManager.currentlyPlayingPosition = 0;
  }

输入：实际输出：期望输出：结果数组应包含输入数组中的所有 6 个项目。