Setup sirv-cli for Rollup with SSL and HTTP/2

openssl.cnf

# OpenSSL configuration to generate a new key with signing requst for a x509v3
# multidomain certificate
#
# openssl req -config bla.cnf -new | tee csr.pem
# or
# openssl req -config bla.cnf -new -out csr.pem
[ req ]
default_bits       = 4096
default_md         = sha512
default_keyfile    = key.pem
prompt             = no
encrypt_key        = no

# base request
distinguished_name = req_distinguished_name

# extensions
req_extensions     = v3_req

# distinguished_name
[ req_distinguished_name ]
countryName            = "DE"                     # C=
stateOrProvinceName    = "Hessen"                 # ST=
localityName           = "Keller"                 # L=
postalCode             = "424242"                 # L/postalcode=
streetAddress          = "Crater 1621"            # L/street=
organizationName       = "apfelboymschule"        # O=
organizationalUnitName = "IT Department"          # OU=
commonName             = "example.com"            # CN=
emailAddress           = "[email protected]"  # CN/emailAddress=

# req_extensions
[ v3_req ]
# The subject alternative name extension allows various literal values to be
# included in the configuration file
# http://www.openssl.org/docs/apps/x509v3_config.html
subjectAltName  = DNS:www.example.com,DNS:www2.example.com # multidomain certificate

# vim:ft=config

package.json

{
  "scripts": {
    "dev": "rollup -c -w",
    "dev:serve": "sirv public --dev --port 5000 --http2 --key server.key --cert server.cert",
    "setup:ssl": "openssl req -nodes -new -x509 -keyout server.key -out server.cert -config openssl.cnf",
    "start": "run-s setup:ssl dev:serve"
  }
}

rollup.config.js

const production = !process.env.ROLLUP_WATCH;

export default {
  input: 'main.js',
  output: [
    {
      sourcemap: true,
      format: 'iife',
      name: 'App',
      file: 'public/build/bundle.js'
    },
  ],
  plugins: [
    svelte({
      hydratable: true,
      dev: !production,
    }),

    resolve({
      browser: true,
      dedupe: importee => importee === 'svelte' || importee.startsWith('svelte/')
    }),
    commonjs(),
    !production && serve(),
    production && terser(),
  ],
  watch: {
    clearScreen: false
  },
}

function serve() {
  let started = false;

  return {
    writeBundle() {
      if (!started) {
        started = true;

        require('child_process').spawn('npm', ['run', 'start'], {
          stdio: ['ignore', 'inherit', 'inherit'],
          shell: true
        });
      }
    }
  };
}

setup.sh

yarn add --dev sirv-cli@next