onPress.tsx

const onInvitePress = () => {  
  let didShare = false;
  const message = `Try my cool app`;
  const emails = selectedContacts
    .filter(c => c.email != null)
    .map(c => c.email) as string[];
  const phoneNumbers = selectedContacts
    .filter(c => c.phoneNumber != null)
    .map(c => c.phoneNumber) as string[];
  if (emails.length > 0) {
    try {
      const result = await composeAsync({
        recipients: emails,
        subject: 'Hello friend',
        body: message,
        isHtml: false,
      });
      didShare = didShare || result.status === 'sent';
    } catch (ex) {
      Alert.alert(ex.message);
    }
  }
  if (phoneNumbers.length > 0 && (await isAvailableAsync())) {
    try {
      const result = await sendSMSAsync(phoneNumbers, message);
      didShare = didShare || result.result === 'sent';
    } catch (ex) {
      Alert.alert(ex.message);
    }
  }

  if (didShare) {
    Alert.alert('Thanks for sharing!!');
  }
};