javascript - 使用bulkDelete时出现 promise 拒绝错误

Question

因此，在使用 .bulkDelete() 后方法，从 channel 中删除消息，我收到此错误:

UnhandledPromiseRejectionWarning: DiscordAPIError: Unknown Message

(node:11720) 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(). (rejection id: 2) (node:11720) [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.

这是我的代码:

//delete the given amount of message + 1 for the sent message
let msgToDelete = parseInt(args[1]) + 1;

//filter messages too old and delete unfiltered messages
msg.channel.bulkDelete(msgToDelete, true)
  .then(deleted => {
    if (deleted.size <= 1) return;
    msg.channel.send(`deleted ${args[1]} messages.`)
      .then(m => m.delete(2500))
      .catch(err => console.error);
  }).catch(err => msg.channel.send(err));

提前致谢。

Answer 1

问题是您的 catch 中的代码抛出了异常，该异常在 catch block 内发生时未得到处理。

值得在全局级别进行捕获并捕获错误并记录它。

此外，关于您链接 promise 的方式，您可以像这样简化

//delete the given amount of message + 1 for the sent message
let msgToDelete = parseInt(args[1]) + 1;

//filter messages too old and delete unfiltered messages
msg.channel.bulkDelete(msgToDelete, true)
  .then(deleted => {
    if (deleted.size <= 1) return;
    return msg.channel.send(`deleted ${args[1]} messages.`);
  })
  .then(m => m.delete(2500))
  .catch(err => msg.channel.send(err));