connect-session-firestore is a Connect/Express compatible session store backed by the Firebase SDK.

firebase-admin must be added as a peer dependency, or you're gonna have a bad time.

$ npm install firebase-admin connect-session-firestore --save

• database A pre-initialized Firebase Cloud Firestore app.
• sessions (optional) A document reference string for session storage. (defaults to "sessions")
• reapInterval (optional) How often expired sessions should be cleaned up (defaults to 21600000) (6 hours in milliseconds)
• reapCallback (optional) A callback function to execute whenever a session clean up occurs

Initialize firebase-admin database and pass the instance to FirestoreStore. Connecting to the database requires a credential cert via a JSON file from the Firebase IAM & Admin Console.

• Connect

const connect = require('connect');
const FirestoreStore = require('connect-session-firestore')(connect);
const firebase = require('firebase-admin');
const ref = firebase.initializeApp({
  credential: firebase.credential.cert('path/to/serviceAccountCredentials.json'),
  databaseURL: 'https://databaseName.firebaseio.com'
});

connect()
  .use(connect.cookieParser())
  .use(connect.session({
    store: new FirestoreStore({
      database: ref.firestore()
    }),
    secret: 'keyboard cat'
  }));

• Express

  NOTE: In Express 4 express-session must be passed to the function connect-session-firestore exports in order to extend express-session.Store:

const express = require('express');
const session = require('express-session');
const FirestoreStore = require('connect-session-firestore')(session);
const firebase = require('firebase-admin');
const ref = firebase.initializeApp({
  credential: firebase.credential.cert('path/to/serviceAccountCredentials.json'),
  databaseURL: 'https://databaseName.firebaseio.com'
});

express()
  .use(session({
    store: new FirestoreStore({
      database: ref.firestore()
    }),
    secret: 'keyboard cat'
    resave: true,
    saveUninitialized: true
  }));

To run tests against connect-session-firestore you will need your own Firebase Database app available.

Checkout the repo locally and create two files in the project root:

• .env
• serviceAccountCredentials.json

With the content:

.env

FIREBASE_SERVICE_ACCOUNT=./serviceAccountCredentials.json
FIREBASE_DATABASE_URL=https://[databaseName].firebaseio.com

serviceAccountCredentials.json

{
  "type": "service_account",
  "project_id": "",
  "private_key_id": "",
  "private_key": "",
  "client_email": "",
  "client_id": "",
  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
  "token_uri": "https://accounts.google.com/o/oauth2/token",
  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
  "client_x509_cert_url": ""
}

Install the dev dependencies:

$ npm install

Run the tests:

$ npm test

connect-session-firestore is licensed under the MIT license.