fcm-rest-api

A Node.js library for Firebase Cloud Messaging (FCM) using REST APIs. Supports sending push notifications to Android, iOS, Web, and topics, as well as subscribing/unsubscribing devices to topics. Uses service account private key for authentication. Current version 1.0.7 has limited recent updates (last update in 2020). Simpler alternative to @firebase/messaging, but lacks TypeScript types and advanced features like message targeting conditions.