How do you implement authentication in a React Native app?

-- Example Code --
import React, { useState } from "react";
import { View, TextInput, Button, Text } from "react-native";
import auth from "@react-native-firebase/auth";

const App = () => {
  const [email, setEmail] = useState(" ");
  const [password, setPassword] = useState(" ");

  const signIn = async () => {
    try {
      await auth().signInWithEmailAndPassword(email, password);
    } catch (error) {
      console.error(error);
    }
  };

  return (
    <View>
      <TextInput
        placeholder="Email"
        value={email}
        onChangeText={setEmail}
      />
      <TextInput
        placeholder="Password"
        value={password}
        onChangeText={setPassword}
        secureTextEntry
      />
      <Button title="Sign In" onPress={signIn} />
    </View>
  );
};

export default App;