gen-certs.js

const chalk = require('chalk');
const getDevelopmentCertificate = require('devcert-with-localhost').default;

const fs = require('fs');
const path = require('path');

const PRIVATE_FOLDER_PATH = path.join(__dirname, '..', 'private');
const CERT_KEY_PATH = path.join(PRIVATE_FOLDER_PATH, 'key.pem');
const CERT_PATH = path.join(PRIVATE_FOLDER_PATH, 'cert.pem');

if (fs.existsSync(CERT_PATH)) {
  process.stdout.write(chalk.yellow.bold('📄  Existing certificate found.') + chalk.dim(' It will be replaced with a new one\n'));
  fs.unlinkSync(CERT_PATH);
}
if (fs.existsSync(CERT_KEY_PATH)) {
  process.stdout.write(chalk.yellow.bold('🔑  Existing private key found.') + chalk.dim(' It will be replaced with a new one\n'));
  fs.unlinkSync(CERT_KEY_PATH);
}

process.stdout.write(chalk.blue('🔐  Attempting to automatically generate X.509 certificate and private key\n'))
getDevelopmentCertificate('frontend-grocer', { installCertutil: true })
  .then(({key, cert}) => {
    process.stdout.write(chalk.green.bold('   ↪ ✅  Success!\n'))
    
    fs.writeFileSync(CERT_PATH, cert);
    fs.writeFileSync(CERT_KEY_PATH, key);

    fs.chmodSync(CERT_PATH, '0400');
    fs.chmodSync(CERT_KEY_PATH, '0400');
    process.exit(0);
  }).catch((err) => {
    process.stderr.write(chalk.red(`   ↪ There was a problem automatically generating X.509 certificates for HTTPS! You may want to consult the "Manually Generating Certificates" section of the README\n${err}\n`));
    process.exit(1);
  });