@expense-manager/finance-data

Reusable data access layer for the Expense Manager apps.

What it contains

• Shared Firebase and local-demo data logic
• A configurable runtime for platform-specific auth, storage, and event APIs
• The same function surface the web app already uses

Configure it

import { configureFinanceData } from "@expense-manager/finance-data";

configureFinanceData({
  firebase: {
    auth,
    db,
    googleProvider,
    isFirebaseConfigured,
  },
  platform: {
    storage,
    eventTarget,
    CustomEvent,
  },
  authHandlers: {
    signInUser: ({ auth, googleProvider }) => signInWithPopup(auth, googleProvider),
    signInAnonymously: ({ auth }) => signInAnonymously(auth),
    signOutUser: ({ auth }) => signOut(auth),
  },
});

React Native note

For React Native, keep Firebase enabled and provide native auth handlers instead of popup auth. The local demo fallback expects a synchronous storage adapter, so in mobile apps it is best treated as optional.