How to use the react-native-firebase.links function in react-native-firebase

const { friend, amount, memo, currency, sendViaLink } = this.state
    let success

    if (sendViaLink) {
      const { state: { user: { address } }, getUcacFromCurrency, sendEmailTx } = this.props
      const ucac = getUcacFromCurrency(currency)
      const inviteTx = new InviteTransaction({ address, amount, memo, ucac, direction, currency })

      const buildLink = new firebase.links.DynamicLink(inviteTx.hash, 'lndr.page.link')
      buildLink
      .android.setPackageName('com.lndr')
      .android.setFallbackUrl('https://play.google.com/store/apps/details?id=com.lndr')
      .ios.setAppStoreId('1322487591')
      .ios.setBundleId('io.lndr')

      firebase.links().createDynamicLink(buildLink)
      .then(url => {
        Share.share({
          message: `${splitExpense}: ${url}`,
          url: url,
          title: splitExpense
        }, {
          // Android only:
          dialogTitle: splitExpense
        })
        .then( async() => {
          console.log(3)
          try {
            console.log(4)
            await submittingTransaction.wrap(sendEmailTx(inviteTx))
            console.log(5)
            this.clearAndGoHome(friend, { type: true })

const { friend, amount, memo, currency, nonFriend } = this.state
    let success

    if (nonFriend) {
      try {
        const { state: { user: { address } }, getUcacFromCurrency, sendEmailTx } = this.props
        const ucac = getUcacFromCurrency(currency)
        const inviteTx = new InviteTransaction({ address, amount, memo, ucac, direction, currency })

        const buildLink = new firebase.links.DynamicLink('https://blockmason.io/lndr', 'lndr.page.link')
        buildLink
        .android.setPackageName('com.lndr')
        .ios.setAppStoreId('1322487591')
        .ios.setBundleId('io.lndr')
      
        const url = await firebase.links().createShortDynamicLink(buildLink, "SHORT")

        const { action } : any = await Share.share({
          message: `${splitExpense}: ${url}?hash=${inviteTx.hash}`,
          title: splitExpense
        }, {
          dialogTitle: splitExpense // Android only
        })
        
        if (action === Share.sharedAction) {
          await submittingTransaction.wrap(sendEmailTx(inviteTx))
          this.clearAndGoHome(friend, { type: true })
        }
      } catch(error) {
        console.log('ERROR SENDING EMAIL TRANSACTION: ', error)
      }
    } else {

export async function dynamicLink(url: string): Promise {
  try {
    // TODO: Move 'celo.page.link' to celo-org-mobile firebase project and then flip this bool once
    // that's done.
    const useRNFirebase = false

    if (useRNFirebase) {
      const link = new firebase.links.DynamicLink(url, 'celo.page.link')

      // TODO: Remove this ts ignore when we upgrade react-native-firebase
      // @ts-ignore: Seems like RN Firebase has the incorrect type for this function call.
      const shortUrl = await firebase.links().createShortDynamicLink(link, 'UNGUESSABLE')
      return shortUrl
    } else {
      const longDynamicLink = `https://celo.page.link/?link=${encodeURIComponent(url)}`
      const apiUrl = `https://firebasedynamiclinks.googleapis.com/v1/shortLinks?key=${FIREBASE_WEB_KEY}`
      const response = await fetch(apiUrl, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({ longDynamicLink }),
      })
      if (response.status !== 200) {
        return url
      }
      const json = await response.json()
      return json.shortLink

export const shortenLink = async (linkIn) => {
  try {
    const domain = Platform.select({
      ios: 'https://lanechange.page.link',
      default: 'lanechange.page.link',
    });
    consolelog(`firebase shortenLink, shortening ${linkIn}, domain=${domain}`);
    const link = new firebase.links.DynamicLink(linkIn, domain);
    const retval = await firebase.links().createShortDynamicLink(link, 'UNGUESSABLE');
    return retval;
  } catch (e) {
    consolelog('ERROR in firebase/shortenLink:');
    consolelog(e);
    return undefined;
  }
};