protocols.js

module.exports = (byShortcut = {}) => ({
  'git+ssh:': { name: 'sshurl' },
  'ssh:': { name: 'sshurl' },
  'git+https:': { name: 'https', auth: true },
  'git:': { auth: true },
  'http:': { auth: true },
  'https:': { auth: true },
  'git+http:': { auth: true },
  ...Object.keys(byShortcut).reduce((acc, key) => {
    acc[key] = { name: byShortcut[key] }
    return acc
  }, {}),
})