An easy snippet to generate your Discord bot's Bearer token!

authorize.js

const express = require('express');
const app = express();
const fetch = require('node-fetch');

const client_id = 'CLIENT_UI'; //can be found in the developer portal
const redirect_uri = 'http://localhost:8000/home';
const client_secret = 'CLIENT_SECRET'; //can be also found in the developer portal
const scope = 'identify'; // set the redirect_uri in your OAuth2 section and use the identify scope in your browser.

app.get('/authorize', (req, res) => {
    res.redirect(`https://discord.com/api/oauth2/authorize?client_id=${client_id}&redirect_uri=${encodeURIComponent(redirect_uri)}&response_type=code&scope=${encodeURIComponent(scope)}`)
});

app.get('/home', async (req, res) => {
    res.send('Done.')

    fetch('https://discord.com/api/oauth2/token', {
        method: 'POST',
        headers: {
            'Content-Type': 'application/x-www-form-urlencoded'
        },
        body: new URLSearchParams({
            client_id: client_id,
            client_secret: client_secret,
            code: req.query.code,
            grant_type: 'authorization_code',
            redirect_uri: redirect_uri,
            scope: scope,
        }),
    })
        .then(response => response.json())
        .then((data) => console.log(data));
});

app.listen(8000);