Add boilerplate

.eslintrc.json

@@ -12,5 +12,7 @@
     "parserOptions": {
         "ecmaVersion": "latest"
     },
-    "rules": {}
+    "rules": {
+        "max-len": "off"
+    }
 }

.gitignore

@@ -1,3 +1,5 @@
 .eslintcache
 node_modules
 .env
+.*.swp
+config.json

commands/ping.js

@@ -0,0 +1,16 @@
+'use strict';
+
+const { SlashCommandBuilder } = require('discord.js');
+
+const data = new SlashCommandBuilder()
+	.setName('ping')
+	.setDescription('Replies with pong!');
+
+const execute = async (interaction) => {
+	await interaction.reply('Pong!');
+};
+
+module.exports = {
+	data,
+	execute
+};

config/config.json.example

@@ -0,0 +1,5 @@
+{
+	"clientToken": "",
+	"clientId": "",
+	"reregisterOnStartup": true
+}

index.js

@@ -0,0 +1,56 @@
+'use strict';
+
+const path = require('path');
+
+const { Client, GatewayIntentBits } = require('discord.js');
+
+const config = require(path.join(__dirname, 'config', 'config.json'));
+
+const getCommands = require(path.join(__dirname, 'lib', 'getCommands.js'));
+const registerCommands = require(path.join(__dirname, 'registerCommands.js'));
+const unregisterCommands = require(path.join(__dirname, 'unregisterCommands.js'));
+
+const client = new Client({ intents: [ GatewayIntentBits.Guilds ] });
+
+client.commands = getCommands();
+
+client.on('interactionCreate', async interaction => {
+	if (!interaction.isChatInputCommand())
+		return;
+
+	const command = client.commands.get(interaction.commandName);
+	if (!command)
+		return;
+
+	try {
+		await command.execute(interaction);
+	} catch (error) {
+		console.error(error);
+		await interaction.reply({ content: 'There was an error while executing this command!', ephemeral: true });
+	}
+});
+
+client.once('ready', () => {
+	console.log('\nLogged in!\n');
+});
+
+async function main() {
+	console.log('Discovering commands...');
+
+	console.log('- Commands: ' +
+		client.commands.map(({ data }) => data.name).join(', ')
+	);
+
+	if (config.reregisterOnStartup) {
+		console.log('- Unregistering commands');
+		await unregisterCommands();
+
+		console.log('- Registering new commands');
+		await registerCommands();
+	}
+
+	client.login(config.clientToken);
+}
+
+main().catch(console.error);
+

lib/getCommands.js

@@ -0,0 +1,25 @@
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+
+const { Collection } = require('discord.js');
+
+module.exports = () => {
+	const commands = new Collection();
+
+	fs.readdirSync(path.join(__dirname, '..', 'commands'))
+		.filter(file => file.endsWith('.js'))
+		.forEach(file => {
+			const command = require(path.join(
+				__dirname,
+				'..',
+				'commands',
+				file
+			));
+
+			commands.set(command.data.name, command);
+		});
+
+	return commands;
+};

package.json

@@ -4,6 +4,7 @@
   "main": "index.js",
   "license": "MIT",
   "dependencies": {
+    "@discordjs/rest": "^1.1.0",
     "discord.js": "^14.3.0",
     "dotenv": "^16.0.1"
   },
@@ -20,6 +21,7 @@
     "prepare": "husky install",
     "lint": "yarn lint:check",
     "lint:check": "eslint .",
-    "lint:fix": "eslint --fix ."
+    "lint:fix": "eslint --fix .",
+    "register": "node registerCommands.js"
   }
 }

registerCommands.js

@@ -0,0 +1,22 @@
+'use strict';
+
+const path = require('path');
+
+const { Routes } = require('discord.js');
+const { REST } = require('@discordjs/rest');
+
+const config = require(path.join(__dirname, 'config', 'config.json'));
+const getCommands = require(path.join(__dirname, 'lib', 'getCommands.js'));
+
+module.exports = () => {
+	const commands = getCommands().map(({ data }) => data.toJSON());
+
+	const rest = new REST({ version: '10' }).setToken(config.clientToken);
+
+	return rest.put(Routes.applicationCommands(config.clientId), { body: commands });
+};
+
+if (require.main === module) {
+	console.log(getCommands());
+	module.exports();
+}

unregisterCommands.js

@@ -0,0 +1,17 @@
+'use strict';
+
+const path = require('path');
+
+const { Routes } = require('discord.js');
+const { REST } = require('@discordjs/rest');
+
+const config = require(path.join(__dirname, 'config', 'config.json'));
+
+module.exports = () => {
+	const rest = new REST({ version: '10' }).setToken(config.clientToken);
+
+	return rest.put(Routes.applicationCommands(config.clientId), { body: [] });
+};
+
+if (require.main === module)
+	module.exports();