How To Fix Must Use Import To Load Es Module Discord.js

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);

Solution 1:

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

constfetch = (...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)
constfetch = (...args) => fetchP.then(fn =>fn(...args))

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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

Solution 2:

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';
importDiscordfrom'discord.js';

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