Lockdown command, specifying with guild.roles - discord.js

Question

I was trying to make a lockdown command, at my point of knowlead, its fine, but something is going wrong.
const Discord = require('discord.js');
const client = new Discord.Client();
module.exports = async (msg,client,args) => {
const channel = msg.channel;
const roles = msg.guild.roles;
if(!msg.guild) return;
if(!msg.member.hasPermission("MANAGE_CHANNELS"))
msg.channel.send("Você não tem permissão para executar esse comando.")
else{
roles.forEach((roles) => {
channel.overwritePermissions (roles ,{
SEND_MESSSAGES: false,
ADD_REACTIONS: false
})
})
msg.channel.send("Canal bloqueado com sucesso.")
}
}```
**error recived: TypeError: Cannot read property 'roles' of undefined**

Answer 1

In your main file you are passing in the arguments as: (client, msg), so in the command file you will need to get the arguments in the right order,
so from:
module.exports = async (msg, client, args) => {
}
to this:
module.exports = async (client, msg, args) => {
}
also you aren't passing in args in your main file so change from:
if (commands[args[0]]) commands[args[0]](client,msg);
else if(args[0].split("")[0] == config.prefix) unknownCommand(client,msg);
To:
const first = args[0];
if(commands[first]) {
commands[first](client, msg, args);
} else if(first[0] === config.prefix) {
unknownCommand(client, msg, args);
}
The next improvement is in your foreach statement:
roles.forEach((roles) => {
//code
});
Here you have an array of roles and then the variable you are passing is also called roles, you should instead call it role or something else,
Also in v12 <Message>.guild.roles is a Manager not a collection, so you need to add `.cache
You will also either need to change the parameters in channel.overwritePermission or switch to channel.updateOverwrite:
roles.cache.forEach(role => {
channel.updateOverwrite(role, {
SEND_MESSSAGES: false,
ADD_REACTIONS: false
})
})
or
roles.cache.forEach(role => {
channel.overwritePermissions([
{
id: role.id,
deny: ["SEND_MESSAGE", "ADD_REACTIONS"]
}
]);
})
You might also want to look into some better command handlers, currently yours doesn't have any config option for commands from what I can tell