FCM-REST

FCM implementation based on REST API, supports proxy. No dependencies on firebase framework.

Implements send-message HTTP APIs v1 and legacy

Legacy API
https://firebase.google.com/docs/cloud-messaging/send-message#send_using_the_fcm_legacy_http_api

V1 API
https://firebase.google.com/docs/reference/fcm/rest/v1/projects.messages

Installation

npm install fcm-rest

Usage

import fcm from 'fcm-rest'
//const fcm = require('fcm-rest')

// recipient
const clientToken = 'ZkVNZ...'

// Use legacy FCM API
const serverKey = 'AAAA...'
await fcm.sendMessageLegacy(serverKey, clientToken, {
  notification: { title: 'Hi there' }
})

// Use v1 FCM API
const gcpServiceAccount = {
  client_email: '***',
  project_id  : '***',
  private_key : '***',
  ...
}
await fcm.sendMessageV1(gcpServiceAccount, clientToken, {
  notification: { title: 'Hi there' }
})

// Send v1 topic
await fcm.sendMessageV1(gcpServiceAccount, undefined, {
  notification: { title: 'Hi there' },
  topic: 'topic-name'
})