Nodejs script to automate RubyGems update to fix SSL errors. Ruby version controlled via environment variable RUBYVERSION

rubygems-update.js

import download from 'download';
import { exec } from 'child_process';
import { unlinkSync} from 'fs';
import Ora from 'ora';

import './env.es6';
import { Debug } from './debug.es6';
import { green } from 'ansicolors';

const debug = new Debug('ruby:ssl');
const version = process.env.RUBYVERSION;
const cwd = process.cwd();

const downloadSpinner = new Ora(`Downloading rubygems-update-${version}`);
downloadSpinner.start();
download(`https://rubygems.org/downloads/rubygems-update-${version}.gem`, 'npmtmp').then(() => {
    downloadSpinner.succeed();

    const installSpinner = new Ora(`Installing rubygems-update-${version}`);
    debug(`Installing rubygems-update-${version}`);
    installSpinner.start();
    exec(`gem install --local npmtmp/rubygems-update-${version}.gem`, {
        cwd,
    }, (err) => {
        if (err) {
            installSpinner.fail();
            throw err;
        }
        installSpinner.succeed();

        const updateSpinner = new Ora('Running update_rubygems');
        debug('Running update_rubygems');
        updateSpinner.start();
        exec('update_rubygems --no-ri --no-rdoc', {
            cwd,
        }, (err2) => {
            if (err2) throw err2;
            updateSpinner.succeed();

            const uninstallSpinner = new Ora('Uninstalling rubygems-update');
            debug('Uninstalling rubygems-update');
            uninstallSpinner.start();
            exec('gem uninstall rubygems-update -x', {
                cwd,
            }, (err3) => {
                if (err3) throw err3;
                uninstallSpinner.succeed();

                const cleanup = new Ora('Cleaning tmp files');
                debug('Cleaning tmp files');
                cleanup.start();
                exec('rimraf npmtmp', {
                    cwd,
                }, (err4) => {
                    if (err4) throw err4;
                    cleanup.succeed();
                    debug(green('Done'));
                });
            })
        })
    });
});