问题描述
让我在解释问题之前先说这个。.我是编码领域的新手，所以我非常喜欢这个东西（正是我问这个的原因）。所以，我正在开发Discord Bot（音乐机器人）并且我几乎完成了代码。（现在只有1 cmd）。当我使用“ node”时，我在标题中遇到了此错误（TypeError：Class扩展值undefined不是构造函数或null）。在我的终端上。我将给出在以下终端中显示的完整内容。我使用Visual Studio代码。
这是我使用'node时在终端中弹出的内容。 '-
C:\Users\ELCOT\Desktop\Discord bot\nodejs\index.js:76
module.exports = class PlayCommand extends Command {
^
TypeError: Class extends value undefined is not a constructor or null
at Object.<anonymous> (C:\Users\ELCOT\Desktop\Discord bot\nodejs\index.js:76:44)
at Module._compile (internal/modules/cjs/loader.js:1251:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1272:10)
at Module.load (internal/modules/cjs/loader.js:1100:32)
at Function.Module._load (internal/modules/cjs/loader.js:962:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
at internal/main/run_main_module.js:17:47```
所以，我真的希望有人可以帮助我解决由于该错误而导致我的进度卡住的情况。
这是此错误出现的代码部分
constructor(client) {
super(client,{
name: 'play',aliases: ['play-song','add'],memberName: 'play',group: 'music',description: 'Play any song or playlist from youtube',guildOnly: true,clientPermissions: ['SPEAK','CONNECT'],throttling: {
usages: 2,duration: 5
},期待一些帮助！ Ty：）
代码-
const Client = new Discord.Client();
const { Structures } = require('discord.js');
const path = require('path');
const { prefix,token,discord_owner_id } = require('./config.json');
Structures.extend('Guild',function(Guild) {
class MusicGuild extends Guild {
constructor(client,data) {
super(client,data);
this.musicData = {
queue: [],isPlaying: false,nowPlaying: null,songDispatcher: null,volume: 1
};
this.triviaData = {
isTriviaRunning: false,wasTriviaEndCalled: false,triviaQueue: [],triviaScore: new Map()
};
}
}
return MusicGuild;
});
const client = new Discord.Client({
commandPrefix: prefix,owner: discord_owner_id // value comes from config.json
});
client.once('ready',() => {
console.log('Ready!');
client.user.setActivity(`${prefix}play`,{
type: 'WATCHING',});
});
client.on('voiceStateUpdate',async (___,newState) => {
if (
newState.member.user.bot &&
!newState.channelID &&
newState.guild.musicData.songDispatcher &&
newState.member.user.id == client.user.id
) {
newState.guild.musicData.queue.length = 0;
newState.guild.musicData.songDispatcher.end();
return;
}
if (
newState.member.user.bot &&
newState.channelID &&
newState.member.user.id == client.user.id &&
!newState.selfDeaf
) {
newState.setSelfDeaf(true);
}
});
client.on('guildMemberAdd',member => {
const channel = member.guild.channels.cache.find(ch => ch.name === 'general'); // change this to the channel name you want to send the greeting to
if (!channel) return;
channel.send(`Welcome ${member}!`);
});
const { Command } = require('discord.js');
const { MessageEmbed } = require('discord.js');
const Youtube = require('simple-youtube-api');
const ytdl = require('ytdl-core');
const { youtubeAPI } = require('./config.json');
const youtube = new Youtube(youtubeAPI);
module.exports = class PlayCommand extends Command {
constructor(client) {
super(client,args: [
{
key: 'query',prompt: 'What song or playlist would you like to listen to?',type: 'string',validate: function(query) {
return query.length > 0 && query.length < 200;
}
}
]
});
}
async run(message,{ query }) {
const voiceChannel = message.member.voice.channel;
if (!voiceChannel) {
message.say('Join a channel and try again');
return;
}
if (message.guild.triviaData.isTriviaRunning == true) {
message.say('Please try after the trivia has ended');
return;
}
if (
// if the user entered a youtube playlist url
query.match(
/^(?!.*\?.*\bv=)https:\/\/www\.youtube\.com\/.*\?.*\blist=.*$/
)
) {
const playlist = await youtube.getPlaylist(query).catch(function() {
message.say('Playlist is either private or it does not exist!');
return;
});
// add 10 as an argument in getVideos() if you choose to limit the queue
const videosArr = await playlist.getVideos().catch(function() {
message.say(
'There was a problem getting one of the videos in the playlist!'
);
return;
});
// this for loop can be uncommented if you want to shuffle the playlist
/*for (let i = videosArr.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[videosArr[i],videosArr[j]] = [videosArr[j],videosArr[i]];
}
*/
for (let i = 0; i < videosArr.length; i++) {
if (videosArr[i].raw.status.privacyStatus == 'private') {
continue;
} else {
try {
const video = await videosArr[i].fetch();
// this can be uncommented if you choose to limit the queue
// if (message.guild.musicData.queue.length < 10) {
//
message.guild.musicData.queue.push(
PlayCommand.constructSongObj(
video,voiceChannel,message.member.user
)
);
// } else {
// return message.say(
// `I can't play the full playlist because there will be more than 10 songs in queue`
// );
// }
} catch (err) {
return console.error(err);
}
}
}
if (message.guild.musicData.isPlaying == false) {
message.guild.musicData.isPlaying = true;
return PlayCommand.playSong(message.guild.musicData.queue,message);
} else if (message.guild.musicData.isPlaying == true) {
message.say(
`Playlist - :musical_note: ${playlist.title} :musical_note: has been added to queue`
);
return;
}
}
// This if statement checks if the user entered a youtube url,it can be any kind of youtube url
if (query.match(/^(http(s)?:\/\/)?((w){3}.)?youtu(be|.be)?(\.com)?\/.+/)) {
query = query
.replace(/(>|<)/gi,'')
.split(/(vi\/|v=|\/v\/|youtu\.be\/|\/embed\/)/);
const id = query[2].split(/[^0-9a-z_\-]/i)[0];
const video = await youtube.getVideoByID(id).catch(function() {
message.say('There was a problem getting the video you provided!');
return;
});
// // can be uncommented if you don't want the bot to play live streams
// if (video.raw.snippet.liveBroadcastContent === 'live') {
// return message.say("I don't support live streams!");
// }
// // can be uncommented if you don't want the bot to play videos longer than 1 hour
// if (video.duration.hours !== 0) {
// return message.say('I cannot play videos longer than 1 hour');
// }
// // can be uncommented if you want to limit the queue
// if (message.guild.musicData.queue.length > 10) {
// return message.say(
// 'There are too many songs in the queue already,skip or wait a bit'
// );
// }
message.guild.musicData.queue.push(
PlayCommand.constructSongObj(video,message.member.user)
);
if (
message.guild.musicData.isPlaying == false ||
typeof message.guild.musicData.isPlaying == 'undefined'
) {
message.guild.musicData.isPlaying = true;
return PlayCommand.playSong(message.guild.musicData.queue,message);
} else if (message.guild.musicData.isPlaying == true) {
message.say(`${video.title} added to queue`);
return;
}
}
// if user provided a song/video name
const videos = await youtube.searchVideos(query,5).catch(async function() {
await message.say(
'There was a problem searching the video you requested :('
);
return;
});
if (videos.length < 5 || !videos) {
message.say(
`I had some trouble finding what you were looking for,please try again or be more specific`
);
return;
}
const vidNameArr = [];
for (let i = 0; i < videos.length; i++) {
vidNameArr.push(`${i + 1}: ${videos[i].title}`);
}
vidNameArr.push('exit');
const embed = new MessageEmbed()
.setColor('#e9f931')
.setTitle('Choose a song by commenting a number between 1 and 5')
.addField('Song 1',vidNameArr[0])
.addField('Song 2',vidNameArr[1])
.addField('Song 3',vidNameArr[2])
.addField('Song 4',vidNameArr[3])
.addField('Song 5',vidNameArr[4])
.addField('Exit','exit');
var songEmbed = await message.channel.send({ embed });
message.channel
.awaitMessages(
function(msg) {
return (msg.content > 0 && msg.content < 6) || msg.content === 'exit';
},{
max: 1,time: 60000,errors: ['time']
}
)
.then(function(response) {
const videoIndex = parseInt(response.first().content);
if (response.first().content === 'exit') {
songEmbed.delete();
return;
}
youtube
.getVideoByID(videos[videoIndex - 1].id)
.then(function(video) {
// // can be uncommented if you don't want the bot to play live streams
// if (video.raw.snippet.liveBroadcastContent === 'live') {
// songEmbed.delete();
// return message.say("I don't support live streams!");
// }
// // can be uncommented if you don't want the bot to play videos longer than 1 hour
// if (video.duration.hours !== 0) {
// songEmbed.delete();
// return message.say('I cannot play videos longer than 1 hour');
// }
// // can be uncommented if you don't want to limit the queue
// if (message.guild.musicData.queue.length > 10) {
// songEmbed.delete();
// return message.say(
// 'There are too many songs in the queue already,skip or wait a bit'
// );
// }
message.guild.musicData.queue.push(
PlayCommand.constructSongObj(
video,message.member.user
)
);
if (message.guild.musicData.isPlaying == false) {
message.guild.musicData.isPlaying = true;
if (songEmbed) {
songEmbed.delete();
}
PlayCommand.playSong(message.guild.musicData.queue,message);
} else if (message.guild.musicData.isPlaying == true) {
if (songEmbed) {
songEmbed.delete();
}
message.say(`${video.title} added to queue`);
return;
}
})
.catch(function() {
if (songEmbed) {
songEmbed.delete();
}
message.say(
'An error has occured when trying to get the video ID from youtube'
);
return;
});
})
.catch(function() {
if (songEmbed) {
songEmbed.delete();
}
message.say(
'Please try again and enter a number between 1 and 5 or exit'
);
return;
});
}
static playSong(queue,message) {
const classThis = this; // use classThis instead of 'this' because of lexical scope below
queue[0].voiceChannel
.join()
.then(function(connection) {
const dispatcher = connection
.play(
ytdl(queue[0].url,{
quality: 'highestaudio',highWaterMark: 1 << 25
})
)
.on('start',function() {
message.guild.musicData.songDispatcher = dispatcher;
dispatcher.setVolume(message.guild.musicData.volume);
const videoEmbed = new MessageEmbed()
.setThumbnail(queue[0].thumbnail)
.setColor('#e9f931')
.addField('Now Playing:',queue[0].title)
.addField('Duration:',queue[0].duration)
.setFooter(
`Requested by ${queue[0].memberDisplayName}`,queue[0].memberAvatar
);
if (queue[1]) videoEmbed.addField('Next Song:',queue[1].title);
message.say(videoEmbed);
message.guild.musicData.nowPlaying = queue[0];
queue.shift();
return;
})
.on('finish',function() {
if (queue.length >= 1) {
classThis.playSong(queue,message);
return;
} else {
message.guild.musicData.isPlaying = false;
message.guild.musicData.nowPlaying = null;
message.guild.musicData.songDispatcher = null;
if (message.guild.me.voice.channel) {
message.guild.me.voice.channel.leave();
return;
}
}
})
.on('error',function(e) {
message.say('Cannot play song');
console.error(e);
message.guild.musicData.queue.length = 0;
message.guild.musicData.isPlaying = false;
message.guild.musicData.nowPlaying = null;
message.guild.musicData.songDispatcher = null;
message.guild.me.voice.channel.leave();
return;
});
})
.catch(function(e) {
message.guild.musicData.queue.length = 0;
message.guild.musicData.isPlaying = false;
message.guild.musicData.nowPlaying = null;
message.guild.musicData.songDispatcher = null;
if (message.guild.me.voice.channel) {
message.guild.me.voice.channel.leave();
}
return console.error(e);
});
}
static constructSongObj(video,user) {
let duration = this.formatDuration(video.duration);
if (duration == '00:00') duration = 'Live Stream';
return {
url: `https://www.youtube.com/watch?v=${video.raw.id}`,title: video.title,rawDuration: video.duration,duration,thumbnail: video.thumbnails.high.url,memberDisplayName: user.username,memberAvatar: user.avatarURL('webp',false,16)
};
}
// prettier-ignore
static formatDuration(durationObj) {
const duration = `${durationObj.hours ? (durationObj.hours + ':') : ''}${
durationObj.minutes ? durationObj.minutes : '00'
}:${
(durationObj.seconds < 10)
? ('0' + durationObj.seconds)
: (durationObj.seconds
? durationObj.seconds
: '00')
}`;
return duration;
}
};
client.login(token);```
I did not know how to make this like a spoiler,so forgive me if it was done in the wrong way/ too long.
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。
小编邮箱:dio#foxmail.com (将#修改为@）