How to get SSL Chain Certificates in NodeJS. This took me a very long time to figure out.

SSLChainCertificate.js

// How to get SSL Chain certificate in NodeJS
/**
 * You will receive multiple files from the SSL Certificate provider, one is
 * the certificate, one is the bundle. Node requires this to be in a single
 * .cert file.
 *
 * To do this from the terminal, concatonate the files together.
 * cat website.com.crt bundle_name.crt > output-bundle.crt
 */

var httpsKeys = {
    key: fs.readFileSync(path.normalize(__dirname + '/../config/ssl/node.kerve.com.key'), 'utf-8'),
    cert: fs.readFileSync(path.normalize(__dirname + '/../config/ssl/bundle.crt'), 'utf-8'),
    requestCert: true,
    rejectUnauthorized: false
};