poixpixel-discord-bot/src/util/deployCommand.ts

import { REST, Routes } from 'discord.js';
import fs from 'fs';
import path from 'path';

const config = JSON.parse(fs.readFileSync('./config.json', 'utf8'));
const { token, clientId, guildId } = config;

const __dirname = path.resolve();
const commandsPath = path.join(__dirname, 'target', 'commands');
const commandFiles = fs
  .readdirSync(commandsPath)
  .filter((file) => file.endsWith('.js'));

const rest = new REST({ version: '9' }).setToken(token);

export const deployCommands = async () => {
  try {
    console.log(
      `Started refreshing ${commandFiles.length} application (/) commands.`
    );

    const commands = commandFiles.map(async (file) => {
      const filePath = path.join('file://', commandsPath, file);
      const commandModule = await import(filePath);
      const command = commandModule.default;

      if (command instanceof Object && 'data' in command) {
        return command.data.toJSON();
      }
      else {
        console.log(
          `[WARNING] The command at ${filePath} is missing a required "data" property.`
        );
        return null;
      }
    });

    const validCommands = await Promise.all(
      commands.filter((command) => command !== null)
    );

    const data: any = await rest.put(
      Routes.applicationGuildCommands(clientId, guildId),
      { body: validCommands }
    );

    console.log(
      `Successfully reloaded ${data.length} application (/) commands.`
    );
  }
  catch (error) {
    console.error(error);
  }
};