Heroku 上的 Discord 机器人抛出错误:agent ??= new htt

Discord bot on Heroku throws an error: agent ??= new https.Agent(Heroku 上的 Discord 机器人抛出错误:agent ??= new https.Agent)

问题描述

这与我的第一个问题有关.我更新了所有代码.在我的 bot.js 中是:

This is related to my first question. I updated all of my codes. In my bot.js is:

require('dotenv').config();

let ver = process.env.DISCORD_BOT;

client.once('ready', async () => {
  if (ver === 'production') {
    client.user.setActivity(`in code land`, { type: 'PLAYING' });
  } else {
    client.user.setActivity(`over ${client.guilds.cache.size} server(s)`, {
      type: 'WATCHING',
      status: 'IDLE',
    });
  }
  console.log(`Logged in as ${client.user.tag}!`);
  console.log(`the prefix is ` + prefix);
});

过程文件:

worker: node bot.js

package.json:

 "scripts": {
    "start": "node .",
    "test": "echo "Error: no test specified" && exit 1",
    "production": "NODE_ENV=production&&npm start",
    "development": "set NODE_ENV=development&&npm start"
  }

.env:

DISCORD_BOT= TOKEN

当我检查 Heroku 应用程序日志时，抛出的错误如下:

When I checked the Heroku application logs here's the error thrown:

2021-12-22T03:13:05.436081+00:00 app[worker.1]: 代理??= new https.Agent({ ...this.client.options.http.agent, keepAlive:真 });

2021-12-22T03:13:05.436081+00:00 app[worker.1]: agent ??= new https.Agent({ ...this.client.options.http.agent, keepAlive: true });

2021-12-22T03:13:05.436082+00:00 应用[worker.1]: ^^^

2021-12-22T03:13:05.436082+00:00 app[worker.1]: ^^^

2021-12-22T03:13:05.436082+00:00 应用[worker.1]:

2021-12-22T03:13:05.436082+00:00 app[worker.1]:

2021-12-22T03:13:05.436082+00:00 app[worker.1]: SyntaxError:意外的令牌'??='

2021-12-22T03:13:05.436082+00:00 app[worker.1]: SyntaxError: Unexpected token '??='

我尝试搜索 SyntaxError: Unexpected token '??='" 并且每个结果都建议将 node.js 更新到 v16-17 但我已经在使用最新版本的 Discord.js 和 Node.js.

I've tried to search for the "SyntaxError: Unexpected token '??='" and every single result is suggesting to update node.js to v16-17 but I'm already using the latest version of both Discord.js and Node.js.

推荐答案

错误来自 discord.js，因为您使用的是旧版本的 Node.js.逻辑空赋值运算符 (??=) 仅 在节点 v15+ 中可用.

The error is coming from discord.js and it's because you're using an older version of Node.js. The logical nullish assignment operator (??=) is only available in node v15+.

您可能认为您使用的是最新版本的 Node.js，但 Heroku 表示 如果引擎中未指定 Node 版本，将使用 14.x 版本".你可以在 package.json 文件中添加一个 engines 属性来指定你需要的版本.由于 discord.js v13 需要 node.js v16.6+，您可以添加以下内容:

You might think that you're using the latest version of Node.js, but Heroku says that "if a Node version isn't specified in the engine, the 14.x release will be used". You can add an engines prop to your package.json file to specify the version you need. As discord.js v13 requires node.js v16.6+, you can add the following:

  "engines": {
    "node": "16.6"
  }

或者请求最新的 v16，添加这个:

Or to request the latest v16, add this:

  "engines": {
    "node": "16.x"
  }

这篇关于Heroku 上的 Discord 机器人抛出错误:agent ??= new https.Agent的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！