Twitter OAuth 2.0 Get Bearer Token

getBearerToken.js

// npm install got, dotenv
const got = require('got');
require('dotenv').config();

const credentials = process.env.CONSUMER_TOKEN + ":" + process.env.CONSUMER_SECRET
const credentialsBase64Encoded = new Buffer.from(credentials).toString('base64');

got({
    url: 'https://api.twitter.com/oauth2/token',
    method:'POST',
    headers: {
      'Authorization': `Basic ${credentialsBase64Encoded}`,
      'Content-Type':'application/x-www-form-urlencoded;charset=UTF-8'
    },
    body: 'grant_type=client_credentials'
}).then((res) => {
  console.log("Bearer Token: ", JSON.parse(res.body).access_token)
})