javascript - How to fix Must use import to load ES Module discord.js - Stack Overflow

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I am working on a bot i made a roast command i am getting this error

internal/modules/cjs/loader.js:1089
      throw new ERR_REQUIRE_ESM(filename, parentPath, packageJsonPath);
      ^

Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: C:\Users\acer\Documents\test\node_modules\node-fetch\src\index.js
require() of ES modules is not supported.
require() of C:\Users\acer\Documents\test\node_modules\node-fetch\src\index.js from C:\Users\acer\Documents\test\commands\roast.js is an ES module file as it is a .js file whose nearest parent package.json contains "type": "module" which defines all .js files in that package scope as ES modules.
Instead rename index.js to end in .cjs, change the requiring code to use import(), or remove "type": "module" from C:\Users\acer\Documents\test\node_modules\node-fetch\package.json.

←[90m    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1089:13)←[39m
←[90m    at Module.load (internal/modules/cjs/loader.js:937:32)←[39m
←[90m    at Function.Module._load (internal/modules/cjs/loader.js:778:12)←[39m
←[90m    at Module.require (internal/modules/cjs/loader.js:961:19)←[39m
←[90m    at require (internal/modules/cjs/helpers.js:92:18)←[39m
    at Object.<anonymous> (C:\Users\acer\Documents\test\commands\roast.js:3:15)
←[90m    at Module._compile (internal/modules/cjs/loader.js:1072:14)←[39m
←[90m    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1101:10)←[39m
←[90m    at Module.load (internal/modules/cjs/loader.js:937:32)←[39m
←[90m    at Function.Module._load (internal/modules/cjs/loader.js:778:12)←[39m {
  code: ←[32m'ERR_REQUIRE_ESM'←[39m

this is my roast.js

const random = require("something-random-on-discord").Random
const oneLinerJoke = require('one-liner-joke');
const fetch = require('node-fetch')
const Discord = require('discord.js')
module.exports = {
    name : 'roast',
    description : 'roasts a user',
    
  async execute(message, args){
       if (!args[0]) return message.channel.send('Invalid Format')
       const mentionedMember = message.guild.mentions.member.first();
       if (!mentionedMember) return message.channel.send('User not found')
        let msg = await message.channel.send('Setting a roast...')

        fetch('.php?lang=en&type=json')
            .then(res => res.json())
            .then(json => {
                message.channel.send(json.insult)
            });
    }

}

this is my main.js

// Import the discord.js module
const Discord = require('discord.js');
const fs = require('fs');
// Create an instance of a Discord client
const client = new Discord.Client();
clientmands = new Discord.Collection();
const commandFiles = fs.readdirSync('./commands').filter(file => file.endsWith('.js'));
const prefix = "$"

/**
 * The ready event is vital, it means that only _after_ this will your bot start reacting to information
 * received from Discord
 */
client.on('ready', () => {
  console.log('I am ready!');
});
 
client.on('message', message => {
  if (!message.content.startsWith(prefix) || message.author.bot) return;

  const args = message.content.slice(prefix.length).trim().split(/ +/);
  const command = args.shift().toLowerCase();


  if(command === 'pingg'){
    clientmands.get('pingg').execute(message, args);
  }
  if(command === 'roast'){
    clientmands.get('roast').execute(message, args);
  }




  if (!clientmands.has(command)) return;

  try {
      clientmands.get(command).execute(message, args);
  } catch (error) {
      console.error(error);
      message.reply('there was an error trying to execute that command!');
  }
});
 

commandFiles.forEach(file => {
  const command = file.split(/.js$/)[0];
  clientmands.set(command, require(`./commands/${file}`));
});



client.login('censored');

I am working on a bot i made a roast command i am getting this error

internal/modules/cjs/loader.js:1089
      throw new ERR_REQUIRE_ESM(filename, parentPath, packageJsonPath);
      ^

Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: C:\Users\acer\Documents\test\node_modules\node-fetch\src\index.js
require() of ES modules is not supported.
require() of C:\Users\acer\Documents\test\node_modules\node-fetch\src\index.js from C:\Users\acer\Documents\test\commands\roast.js is an ES module file as it is a .js file whose nearest parent package.json contains "type": "module" which defines all .js files in that package scope as ES modules.
Instead rename index.js to end in .cjs, change the requiring code to use import(), or remove "type": "module" from C:\Users\acer\Documents\test\node_modules\node-fetch\package.json.

←[90m    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1089:13)←[39m
←[90m    at Module.load (internal/modules/cjs/loader.js:937:32)←[39m
←[90m    at Function.Module._load (internal/modules/cjs/loader.js:778:12)←[39m
←[90m    at Module.require (internal/modules/cjs/loader.js:961:19)←[39m
←[90m    at require (internal/modules/cjs/helpers.js:92:18)←[39m
    at Object.<anonymous> (C:\Users\acer\Documents\test\commands\roast.js:3:15)
←[90m    at Module._compile (internal/modules/cjs/loader.js:1072:14)←[39m
←[90m    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1101:10)←[39m
←[90m    at Module.load (internal/modules/cjs/loader.js:937:32)←[39m
←[90m    at Function.Module._load (internal/modules/cjs/loader.js:778:12)←[39m {
  code: ←[32m'ERR_REQUIRE_ESM'←[39m

this is my roast.js

const random = require("something-random-on-discord").Random
const oneLinerJoke = require('one-liner-joke');
const fetch = require('node-fetch')
const Discord = require('discord.js')
module.exports = {
    name : 'roast',
    description : 'roasts a user',
    
  async execute(message, args){
       if (!args[0]) return message.channel.send('Invalid Format')
       const mentionedMember = message.guild.mentions.member.first();
       if (!mentionedMember) return message.channel.send('User not found')
        let msg = await message.channel.send('Setting a roast...')

        fetch('http://evilinsult.com/generate_insult.php?lang=en&type=json')
            .then(res => res.json())
            .then(json => {
                message.channel.send(json.insult)
            });
    }

}

this is my main.js

// Import the discord.js module
const Discord = require('discord.js');
const fs = require('fs');
// Create an instance of a Discord client
const client = new Discord.Client();
client.commands = new Discord.Collection();
const commandFiles = fs.readdirSync('./commands').filter(file => file.endsWith('.js'));
const prefix = "$"

/**
 * The ready event is vital, it means that only _after_ this will your bot start reacting to information
 * received from Discord
 */
client.on('ready', () => {
  console.log('I am ready!');
});
 
client.on('message', message => {
  if (!message.content.startsWith(prefix) || message.author.bot) return;

  const args = message.content.slice(prefix.length).trim().split(/ +/);
  const command = args.shift().toLowerCase();


  if(command === 'pingg'){
    client.commands.get('pingg').execute(message, args);
  }
  if(command === 'roast'){
    client.commands.get('roast').execute(message, args);
  }




  if (!client.commands.has(command)) return;

  try {
      client.commands.get(command).execute(message, args);
  } catch (error) {
      console.error(error);
      message.reply('there was an error trying to execute that command!');
  }
});
 

commandFiles.forEach(file => {
  const command = file.split(/.js$/)[0];
  client.commands.set(command, require(`./commands/${file}`));
});



client.login('censored');

• javascript
• node.js
• discord.js
• bots

Share Improve this question Follow edited Sep 6, 2021 at 8:02 Endless 37.8k1313 gold badges116116 silver badges137137 bronze badges asked Sep 4, 2021 at 12:58 CaptainBeasstCaptainBeasst 14811 gold badge33 silver badges1818 bronze badges 3

• 1 The solution is in the error message: Instead rename index.js to end in .cjs, change the requiring code to use import(), or remove "type": "module" – jabaa Commented Sep 4, 2021 at 13:03
• node-fetch version 3 (current latest) wont allow beeing required – Raphael PICCOLO Commented Sep 4, 2021 at 13:07
• Hope this helps: gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c – Endless Commented Sep 6, 2021 at 8:04

Add a comment  | 

2 Answers 2

Sorted by: Reset to default 16

As mention in the README.md also... Another way to make fetch@3 happen is to import node-fetch using the async import() supported in node v12.20

const fetch = (...args) => import('node-fetch').then(({default: fetch}) => fetch(...args));

this works from commonjs also (the next request won't re-import node-fetch cuz modules gets cached) This can make the Node process boot up faster and only lazy loads the node-fetch when it's needed

here is another way to preload it:

const fetchP = import('node-fetch').then(mod => mod.default)
const fetch = (...args) => fetchP.then(fn => fn(...args))

---

You don't necessary have to convert your hole project to ESM just b/c we did it. You can also stay with the v2 branch - we will keep updating v2 with bug/security issues. But not so much with new features...

( Still recommend others to switch to ESM doe )

For TypeScript users who are only after the Types, you can do: import type { Request } from 'node-fetch' (this will not import or transpile anything - this typing annotation will just be discarded)

There is a hole section of how to import/require node fetch in cjs projects at #1279

as the error states :

package.json contains "type": "module" which defines all .js files in that package scope as ES modules

you usually have 3 options:

1. Try removing this line from package.json to use only requires in your code.
2. or keep this line and use import statements instead of require statements everywhere in your app (ES6).
3. rename your file to index.cjs, then require in allowed in this particular file, while you still must use import in others.

in your particular case, you are using node-fetch which is now esmodule only (since version 3). then the only solution available for you is to use import everywhere.

requires should become something like this:

import {Random} from 'something-random-on-discord';
import oneLinerJoke from 'one-liner-joke';
import fetch from 'node-fetch';
import Discord from 'discord.js';

EDIT: you can also remove node fetch or revert to branch v2 to keep using require.

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