discord.js | 无法读取未定义的属性“设置”

Question

I'm making my command handler in discord.js v12, and I keep on getting this error, which is:

Cannot read property 'set' of undefined

Here is my code, this code is in a folder called handlers

const { readdirSync, readdir } = require('fs');
const ascii = require('ascii-table');
let table = new ascii('commands');

table.setHeading('Commands', 'Status');

module.exports = (client) => {
 readdirSync('./commands/').forEach((dir) => {
  const commands = readdirSync(`./commands/${dir}/`).filter((file) =>
   file.endsWith('.js')
  );
  for (let file of commands) {
   let pull = require(`../commands/${dir}/${file}`);
   if (pull.name) {
    client.commands.set(pull.name, pull);

    table.addRow(file, '✅');
   } else {
    table.addRow(
     file,
     `❌ -> Missing a help.name, or help.name in not a string.`
    );
    continue;
   }
   if (pull.aliases && Array.isArray(pull.aliases))
    pull.aliases.forEach((alias) => client.aliases.set(aliases, pull.name));
  }
 });
 console.log(table.toString());
};

In my entry point, which is main.js , I have made a new collection.

Answer 1

The problem here is your working in a separate file so you haven't got access to the variables defined in the other

to get around this, in you main.js file you need to use a module.exports.client = client and the in the handler.js file you can do const client = require("../main.js").client

You must also make sure that when defining client.commands you give it the correct object type. It must be client.commands = new Discord.Collection()