Discord.js机器人-在我的情况下如何处理UnhandledPromiseRejectionWarning [英] Discord.js Bot - How to handle UnhandledPromiseRejectionWarning in my case

问题描述

即使代码起作用（部分地有时会中断），我仍会收到UnhandledPromiseRejectionWarning。
那么，如何应对承诺拒绝呢？我昨天开始使用node.js，这真是令人困惑。

I keep getting UnhandledPromiseRejectionWarning even though the code functions (partially, sometimes it breaks). So, how to catch the promise rejection thingy? I started using node.js yesterday and this is confusing as hell.

bot.on('message', async message => {
    let inGame = message.guild.roles.cache.find(role => role.name == "In-Game");
    let memberArray = message.guild.members.cache.filter(member => member.roles.cache.find(role => role == inGame)).array();

    if (message.content.startsWith(".mute2") && message.channel.name == 'admin-only') {
        memberArray.forEach(member => member.edit({mute: true}));
    }
});

推荐答案

UnhandledPromiseRejectionWarning是对您遇到的其他错误的包装尚未使用 try / catch 处理的基于代码的代码。这是一个示例（不是代码中的错误）

UnhandledPromiseRejectionWarning is a wrapper for other errors you get in promise-based code that you haven't handled with try/catch or something. Here's an example (not an error from your code)

(node:16189) UnhandledPromiseRejectionWarning: DiscordAPIError: Missing Access
    at RequestHandler.execute (/home/*/NODESTUFF/node_modules/discord.js/src/rest/RequestHandler.js:170:25)
    at processTicksAndRejections (internal/process/task_queues.js:97:5)
(node:16189) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:16189) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

注意，在UnhandledPromiseRejectionWarning之后，还有另一个错误：DiscordAPIError：缺少访问权限。

Notice that right after UnhandledPromiseRejectionWarning, there's another error: DiscordAPIError: Missing Access.

然后还有另一行您看不到何时在控制台中进行了处理，但是以SO代码格式非常可读：

And then there's another line you can't see when it's crunched up in your console but is very readable in the SO code formatting:

UnhandledPromiseRejectionWarning：未处理的承诺拒绝。该错误是由于在没有catch块的情况下抛出异步函数而引起的，或者是由于拒绝了未使用.catch（）处理的诺言而引起的。

UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch().

如果您遇到类似的API错误，则您的漫游器缺少某些内容的权限（我怀疑）。不幸的是，代码没有告诉您缺少的 权限。我建议您为要尝试执行的每件事添加权限。

If there's an APIerror like that for you, your bot is missing permissions for something (which I suspect). Unfortunately, the code doesn't tell you what permission you're missing. I recommend you add perms for each thing you're trying to do.

您的代码对我来说还不错，因为我已经给我的机器人授予了使用户静音，查看角色等的权限。真的很惊讶您不需要等待 member.edit（）。如果有人知道为什么，请发表评论。

Your code ran fine for me because I already gave my bot permissions to mute users, see roles, etc. I was actually surprised you didn't need to await member.edit(). If anyone knows why, please leave a comment.

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