JAVASCRIPT

react native firebase login with facebook

  async function logIn() {
    try {
      await Facebook.initializeAsync({
        appId: "APP ID HERE",
      });
      const {
        type,
        token,
        expirationDate,
        permissions,
        declinedPermissions,
      } = await Facebook.logInWithReadPermissionsAsync({
        permissions: ["public_profile"],
      });
      if (type === "success") {
        alert(`HELLO`);
        console.log("SUCCESS");

        // Get the user's name using Facebook's Graph API
        const response = await fetch(
          `https://graph.facebook.com/me?access_token=${token}`
        );
        Alert.alert("Logged in!", `Hi ${(await response.json()).name}!`);
      } else {
        // type === 'cancel'
      }
    } catch ({ message }) {
      alert(`Facebook Login Error: ${message}`);
    }
  }