我收到此错误，我该如何解决？ DiscordAPIError：无法发送空消息

Question

How can I fix this?
Error: UnhandledPromiseRejectionWarning: DiscordAPIError: Cannot send an empty message

Code:

let y = process.openStdin()
y.addListener('data', res => {
    let x = res.toString().trim().split(/ +/g)
    if (!x) return;
    client.channels.cache.get("736725455599697980").send(x.join(" "));
});

Answer 1

The problem comes from this line:

if (!x) return;

---

You should use x[0] as your return condition instead of just x . An empty array is still an array, and can thus pass your current requirement without issue.

However, discord.js cannot send an empty array, which is why you're getting your error.

---

Quick Demonstration:

 const example = () => { // even if x is an empty array let x = []; // it will still be defined, thus passing your condition if (x) return; // however, when you try to send it as a string, nothing shows up, // as it is empty. that's why you're getting you're error console.log(x.toString()); }; example()