Ubuntu 22.04上PM2启动Discord Bot报错：SyntaxError: Unexpected token '.'

环境版本 #

• PM 2 5.3
• discord.js 14.11

报错信息 #

SyntaxError: Unexpected token '.'
at wrapSafe (internal/modules/cjs/loader.js:915:16)
at Module._compile (internal/modules/cjs/loader.js:963:27)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
at Module.load (internal/modules/cjs/loader.js:863:32)
at Function.Module._load (internal/modules/cjs/loader.js:708:14)
at Module.require (internal/modules/cjs/loader.js:887:19)
at Module.Hook._require.Module.require (/usr/local/lib/node_modules/pm2/node_modules/require-in-the-middle/index.js:101:39)
at require (internal/modules/cjs/helpers.js:74:18)
at Object. (/root/ObjectionerBot/node_modules/discord.js/src/index.js:6:22)
at Module._compile (internal/modules/cjs/loader.js:999:30)
/root/ObjectionerBot/node_modules/discord.js/src/client/BaseClient.js:29
userAgentAppendix: options.rest?.userAgentAppendix
^

文件结构 #

运行的index.js代码 #

const fs = require('fs');
const { Client, Collection, Events, GatewayIntentBits, EmbedBuilder, SlashCommandBuilder, Partials  } = require('discord.js');
const { token, incoming_messages } = require('./config.json');

const client = new Client({ intents: [GatewayIntentBits.Guilds, GatewayIntentBits.GuildMembers] });

client.commands = new Collection();
const commandFiles = fs.readdirSync('./commands').filter(file => file.endsWith('.js'));

for (const file of commandFiles) {
  const command = require(`./commands/${file}`);
  client.commands.set(command.data.name, command);
}


client.on('guildMemberAdd', (member) => {

      let welcome = Math.floor(Math.random() * incoming_messages.length)

      let NewMem = incoming_messages[welcome].replace("${member}", member)

      const E = new EmbedBuilder()
        .setTitle("**New Member**")
        .setDescription(NewMem)
        .setColor("#A020F0")
        .setTimestamp()
      
      console.log("MEMBER JOINED")
      member.roles.add([`951942010309345311`])
client.channels.cache.get("952666424436994078").send({ embeds: [E] });
});

client.once('ready', () => {
  console.log('System is yes!');
  const I = new EmbedBuilder()
    .setColor(`#0a9239`)
    .setTitle("**RESTART**")
    .setDescription(`The bot has restarted, this is normal or a update.`)
    .setTimestamp()

    client.channels.cache.get("952958463317794826").send({ embeds: [I] });
    client.user.setActivity("objectionstudios.com");
});

client.on('interactionCreate', async interaction => {
  if (!interaction.isCommand()) return;

  const command = client.commands.get(interaction.commandName);

  if (!command) return;

  try {
    await command.execute(interaction, client);
  } catch (error) {
    console.error(error);
    await interaction.reply({ content: 'There was an error while executing this command!', ephemeral: true });
  }
});

client.on(Events.InteractionCreate, interaction => {
    if (interaction.isButton()) {
    console.log(interaction.id)
  }
});


client.login(token);

解决方案 #

这个错误的核心原因是你的Node.js版本不支持discord.js v14要求的可选链操作符(?.)。discord.js v14明确要求Node.js版本至少为16.9.0，而当前PM2使用的Node.js版本低于这个要求。

修复步骤： #

1. 检查当前Node.js版本
   在终端执行：

   node -v
   

   若版本低于16.9.0，需要升级Node.js。

2. 升级Node.js到兼容版本
   推荐用nvm管理Node.js版本，避免系统版本冲突：

   # 安装nvm
   curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
   # 重新加载终端配置
   source ~/.bashrc
   # 安装Node.js 18.x（LTS版本，完美兼容discord.js v14）
   nvm install 18
   # 设置为默认版本
   nvm alias default 18
   

3. 同步PM2的Node.js版本
   重新安装PM2到当前Node.js环境，确保PM2使用新版本：

   npm install -g pm2
   pm2 update
   

4. 重启Bot

   pm2 delete index
   pm2 start index.js
   

验证 #

查看PM2日志确认修复：

pm2 logs index

内容的提问来源于stack exchange，提问作者TheProgrammerEthan