How to use the react-native-config.RN_TEMPORARY_REFERRAL function in react-native-config

export function* routeThreadInvite(url: string, hash: string) {
  const reduxStarted: boolean = yield select(startupSelectors.started)
  if (!reduxStarted) {
    yield take(getType(StartupActions.startup))
  }
  if (yield select(PreferencesSelectors.onboarded)) {
    NavigationService.navigate('ThreadInvite', { ...DeepLink.getParams(hash) })
  } else {
    // simply store the pending invite information to act on after onboarding success
    const data = DeepLink.getParams(hash)
    const code: string = data.referral as string
    const referral =
      code.toLowerCase() === Config.RN_TEMPORARY_REFERRAL.toLowerCase()
        ? code
        : undefined
    yield put(AuthActions.onboardWithInviteRequest(url, hash, referral))
  }
}

const home = phoneNumbers.find(
      number => number.label.toLowerCase() === 'home'
    )
    const work = phoneNumbers.find(
      number => number.label.toLowerCase() === 'work'
    )
    const sendTo = iphone || mobile || home || work
    if (sendTo) {
      const username: string | undefined = yield select((state: RootState) =>
        accountSelectors.getUsername(state.account)
      )
      const address: string | undefined = yield select((state: RootState) =>
        accountSelectors.getAddress(state.account)
      )
      const url = `https://www.textile.photos/invites/new#name=new&inviter=${username}&referral=${
        Config.RN_TEMPORARY_REFERRAL
      }`
      let message = `Join me on Textile Photos: ${url}`
      if (username) {
        message = `${message}\nMy username: ${username}`
      }
      if (address) {
        message = `${message}\nMy address snippet: ${address.substr(
          address.length - 8,
          8
        )}`
      }
      yield call(composeMessage, sendTo.number, message)
    }
  }
}

(
        
      )
    ]
    if (!this.props.skipReferralCode) {
      pages.splice(3, 0, (
        
      ))
    }
    if (this.props.pendingMigration) {
      pages.unshift((
        
          We're working fast to make Textile Photos even better.
          Your old data isn't compatible with this new version of the app,
          so you'll be starting fresh now. Check out your Notifications
          screen to get started migrating your old data if you'd like.

function createInviteLink(invite: IExternalInvite, threadName: string): string {
  const hash: string[] = []
  hash.push(`id=${encodeURIComponent(invite.id)}`)
  hash.push(`key=${encodeURIComponent(invite.key)}`)
  hash.push(`inviter=${encodeURIComponent(invite.inviter)}`)
  hash.push(`name=${encodeURIComponent(threadName)}`)
  if (Config.RN_TEMPORARY_REFERRAL) {
    hash.push(`referral=${encodeURIComponent(Config.RN_TEMPORARY_REFERRAL)}`)
  }
  return `https://www.textile.photos/invites/new#${hash.join('&')}`
}

function createInviteLink(invite: IExternalInvite, threadName: string): string {
  const hash: string[] = []
  hash.push(`id=${encodeURIComponent(invite.id)}`)
  hash.push(`key=${encodeURIComponent(invite.key)}`)
  hash.push(`inviter=${encodeURIComponent(invite.inviter)}`)
  hash.push(`name=${encodeURIComponent(threadName)}`)
  if (Config.RN_TEMPORARY_REFERRAL) {
    hash.push(`referral=${encodeURIComponent(Config.RN_TEMPORARY_REFERRAL)}`)
  }
  return `https://www.textile.photos/invites/new#${hash.join('&')}`
}