Get OAuth 1.0a access tokens for your user

get_oauth1_access_token.js

const qs = require('querystring');
const request = require('request');
const readline = require('readline').createInterface({
  input: process.stdin,
  output: process.stdout
});
const util = require('util');

const get = util.promisify(request.get);
const post = util.promisify(request.post);
const package = require('./package.json');

const [consumer_key, consumer_secret] = process.argv.slice(2);

if (!consumer_key || !consumer_secret) {
  console.error('One or more credentials are missing');
  process.exit(-1);
}

const requestTokenURL = new URL('https://api.twitter.com/oauth/request_token');
const accessTokenURL = new URL('https://api.twitter.com/oauth/access_token');
const authorizeURL = new URL('https://api.twitter.com/oauth/authorize');

async function input(prompt) {
  return new Promise(async (resolve, reject) => {
    readline.question(prompt, (out) => {
      readline.close();
      resolve(out);
    });
  });
}

async function requestToken() {
  const oAuthConfig = {
    callback: 'oob',
    consumer_key: consumer_key,
    consumer_secret: consumer_secret,
  };

  const req = await post({url: requestTokenURL, oauth: oAuthConfig});
  if (req.body) {
    return qs.parse(req.body);
  } else {
    throw new Error('Cannot get an OAuth request token');
  }
}

async function accessToken({oauth_token, oauth_token_secret}, verifier) {
  const oAuthConfig = {
    consumer_key: consumer_key,
    consumer_secret: consumer_secret,
    token: oauth_token,
    token_secret: oauth_token_secret,
    verifier: verifier,
  }; 
  
  const req = await post({url: accessTokenURL, oauth: oAuthConfig});
  if (req.body) {
    return qs.parse(req.body);
  } else {
    throw new Error('Cannot get an OAuth request token');
  }
}

(async () => {
  try {

    // Get request token
    const oAuthRequestToken = await requestToken();
    
    // Get authorization
    authorizeURL.searchParams.append('oauth_token', oAuthRequestToken.oauth_token);
    console.log('Please go here and authorize:', authorizeURL.href);
    const pin = await input('Paste the PIN here: ');
    
    // Get the access token
    const oAuthAccessToken = await accessToken(oAuthRequestToken, pin.trim());
    console.log(oAuthAccessToken);
  } catch(e) {
    console.error(e);
    process.exit(-1);
  }
  process.exit();
})();