archived-next-auth/src/lib/parse-url.js

/**
 * Simple universal (client/server) function to split host and path
 * We use this rather than a library because we need to use the same logic both
 * client and server side and we only need to parse out the host and path, while
 * supporting a default value, so a simple split is sufficent.
 * @param {string} url
 */
export default function parseUrl (url) {
  // Default values
  const defaultHost = 'http://localhost:3000'
  const defaultPath = '/api/auth'

  if (!url) { url = `${defaultHost}${defaultPath}` }

  // Default to HTTPS if no protocol explictly specified
  const protocol = url.startsWith('http:') ? 'http' : 'https'

  // Normalize URLs by stripping protocol and no trailing slash
  url = url.replace(/^https?:\/\//, '').replace(/\/$/, '')

  // Simple split based on first /
  const [_host, ..._path] = url.split('/')
  const baseUrl = _host ? `${protocol}://${_host}` : defaultHost
  const basePath = _path.length > 0 ? `/${_path.join('/')}` : defaultPath

  return { baseUrl, basePath }
}