lib/get.js
function get (uri, params, cb) {
  assert(typeof uri === 'string', 'must pass registry URI to get')
  assert(params && typeof params === 'object', 'must pass params to get')
  assert(typeof cb === 'function', 'must pass callback to get')

  var parsed = url.parse(uri)
  assert(
    parsed.protocol === 'http:' || parsed.protocol === 'https:',
    'must have a URL that starts with http: or https:'
  )

  this.request(uri, params, cb)
}
function get (uri, params, cb) {
  assert(typeof uri === 'string', 'must pass registry URI to get')
  assert(params && typeof params === 'object', 'must pass params to get')
  assert(typeof cb === 'function', 'must pass callback to get')

  var parsed = url.parse(uri)
  assert(
    parsed.protocol === 'http:' || parsed.protocol === 'https:',
    'must have a URL that starts with http: or https:'
  )

  this.request(uri, params, cb)
}
/*
This is meant to be overridden in specific implementations if you
want specialized behavior for metadata (i.e. caching).