text: module.exports = star
  
  var assert = require('assert')
  
  function star (uri, params, cb) {
    assert(typeof uri === 'string', 'must pass registry URI to star')
    assert(params && typeof params === 'object', 'must pass params to star')
    assert(typeof cb === 'function', 'must pass callback to star')
  
    var starred = !!params.starred
  
    var auth = params.auth
    assert(auth && typeof auth === 'object', 'must pass auth to star')
    if (!(auth.token || (auth.password && auth.username && auth.email))) {
      var er = new Error('Must be logged in to star/unstar packages')
      er.code = 'ENEEDAUTH'
      return cb(er)
    }
  
    var client = this
    this.request(uri + '?write=true', { auth: auth }, function (er, fullData) {
      if (er) return cb(er)
  
      client.whoami(uri, params, function (er, username) {
        if (er) return cb(er)
  
        var data = {
          _id: fullData._id,
          _rev: fullData._rev,
          users: fullData.users || {}
        }
  
        if (starred) {
          client.log.info('starring', data._id)
          data.users[username] = true
          client.log.verbose('starring', data)
        } else {
          delete data.users[username]
          client.log.info('unstarring', data._id)
          client.log.verbose('unstarring', data)
        }
  
        var options = {
          method: 'PUT',
          body: data,
          auth: auth
        }
        return client.request(uri, options, cb)
      })
    })
  }
  