ngTagsInput spring cleaning script

spring-cleaning.js

const path = require('path');
const GitHubApi = require('github');
const jsonfile = require('jsonfile');
const moment = require('moment');
const async = require('async');
const config = require('./config.json');

const github = new GitHubApi({ protocol: 'https' });
github.authenticate({ type: 'oauth', token: config.token });

const owner = 'mbenford';
const repo = 'ngTagsInput';

const issues = jsonfile.readFileSync(path.join(__dirname, 'issues.json'));
const selectedIssues = issues.filter(issue => moment().diff(issue.updated_at, 'days') > 30);

async.eachSeries(selectedIssues,
  (issue, next) => {
    closeIssue(issue.number)
      .then(() => {
        console.log(`Issue ${issue.number} closed`);
        next();
      })
      .catch(err => {
        console.log(`Error closing issue %{issue.number}: ${err}`);
        next(err);
      });
  }, 
  err => {
    if (err) {
      console.log(`Error: ${err}`);
      process.exit(1);
    }
    console.log('Finished');
  });


function closeIssue(issueId) {
  const createComment = () => {
    const message = 'This issue was selected to be spring-cleaned by a script. More information can be found [here](https://github.com/mbenford/ngTagsInput/issues/790).\n\n' + 
                    'If anyone thinks this was a mistake and this issue should be reopened, ' +
                    'please leave a message below explaining why. ' + 
                    'Before doing so, please consider reading the [CONTRIBUTING](https://github.com/mbenford/ngTagsInput/blob/master/CONTRIBUTING.md) file.';

    return github.issues.createComment({ owner, repo, number: issueId, body: message });
  };

  const addLabel = () => {
    return github.issues.addLabels({ owner, repo, number: issueId, labels: ['spring-cleaned'] });
  };

  const close = () => {
    return github.issues.edit({ owner, repo, number: issueId, state: 'closed' });
  };
    
  return createComment()
    .then(addLabel)
    .then(close);
}