<commit_before>function extend (Y) {
  class Connector extends Y.AbstractConnector {
    constructor (y, options) {
      if (options === undefined) {
        throw new Error('Options must not be undefined!')
      }
      if (options.dat == null) {
        throw new Error('You must define a dat API object!')
      }
      if (options.site == null) {
        throw new Error('You must define a dat site!')
      }
      options.role = 'slave'
      super(y, options)
      this.options = options
      this.dat = options.dat || window.dat
      this.site = options.room
      this.setUserId(this.site.split('/')[2])
      this.collaborators = {}
      
      this.addCollaborator(this.userId)
      this.reconnect()
    }

    checkForUpdates() {
      return Promise.resolve()
      .then(() => this.updateCollaboratorsList())
      .then(() => Promise.all(<commit_msg>Fix options guards<commit_after>function extend (Y) {
  class Connector extends Y.AbstractConnector {
    constructor (y, options) {
      if (options === undefined) {
        throw new Error('Options must not be undefined!')
      }
      if (options.room == null) {
        throw new Error('You must define a dat site!')
      }
      options.role = 'slave'
      super(y, options)
      this.options = options
      this.dat = options.dat || window.dat
      this.site = options.room
      this.setUserId(this.site.split('/')[2])
      this.collaborators = {}
      
      this.addCollaborator(this.userId)
      this.reconnect()
    }

    checkForUpdates() {
      return Promise.resolve()
      .then(() => this.updateCollaboratorsList())
      .then(() => Promise.all(
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{'dir': 'git-commits-cleaned', 'id': '4574059', 'n_tokens_mistral': 480, 'n_tokens_neox': 482, 'n_words': 119}