The error message "SyntaxError: Cannot use import statement outside a module" popped up while working with discord.js, typescript, heroku

// Necessary imports for running the discord bot smoothly
import DiscordJS, { TextChannel, Intents, Message, Channel, NewsChannel, ThreadChannel, DiscordAPIError } from 'discord.js'
type guildTextBasedChannel = TextChannel | NewsChannel | ThreadChannel

import dotenv from 'dotenv'
dotenv.config()

// Setting the command prefix for the bot
const prefix = '~';

// Initializing the client with specific intentions for the bot's use
const client = new DiscordJS.Client({
    intents: [
        Intents.FLAGS.GUILDS,
        Intents.FLAGS.GUILD_MESSAGES,
        Intents.FLAGS.GUILD_MESSAGE_REACTIONS,
        Intents.FLAGS.DIRECT_MESSAGES
    ]
})

// Displays "The bot is ready" message when the bot is turned on
client.on('ready', () => {
    console.log('The bot is ready')
})

// Logging in to the bot using the provided token
client.login(process.env.token)

I am currently working on creating a discord bot and aiming to have it operational 24/7 using GitHub and Heroku. However, I encountered an error while trying to run it on Heroku.

I suspect that the error may be due to my usage of TypeScript for the bot. Do I need to convert it to JavaScript or is there a simple solution?

EDIT:

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });


// Required imports for successful execution of the discord bot
const discord_js_1 = __importStar(require("discord.js"));
const dotenv_1 = __importDefault(require("dotenv"));
dotenv_1.default.config();

// Setting the command prefix for the bot
const prefix = '~';

// Initializing the client with specific intentions for the bot's use
const client = new discord_js_1.default.Client({
    intents: [
        discord_js_1.Intents.FLAGS.GUILDS,
        discord_js_1.Intents.FLAGS.GUILD_MESSAGES,
        discord_js_1.Intents.FLAGS.GUILD_MESSAGE_REACTIONS,
        discord_js_1.Intents.FLAGS.DIRECT_MESSAGES
    ]
});

// Displays "The bot is ready" message when the bot is turned on
client.on('ready', () => {
    console.log('The bot is ready');
});
client.login(process.env.token);

Above is the index.js code after executing "tsc".

The image above shows the error message I received on Heroku.

Answer №1

Based on my own experience using Heroku, I've found that it's not very effective when trying to directly run a TS file. My suggestion would be to utilize a tool like tsc to transpile the code into JS before deploying it on Heroku.

Just a heads-up: If you include

"type": "module"
in your package.json, keep in mind that certain global variables, like __dirname, may no longer be accessible.

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