Add native Expo Facebook API integration for social login

Description

Contributor guide

Tech stack

react nativejavascript

Domain

mobileauthentication

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

3

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-2 days

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

mostly clear

Prerequisites

Expo SDK knowledgeReact Native development setup

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

30

Research direction

Examine the existing `auth/facebook` module in the repository to understand the API patterns and coding style. Refer to Expo's official Facebook SDK documentation (https://docs.expo.io/versions/v31.0.0/sdk/facebook) to implement the native integration. Check the issue comments for any additional context or maintainer feedback that may clarify expectations.