Firebase Cloud Functions

**Title: Dive into Firebase Cloud Functions | A Beginner’s Guide**


Welcome to this beginner-friendly tutorial on Firebase Cloud Functions! In this video, we will explore the basics of Firebase Cloud Functions and how they can be used to create reactive functions in JavaScript. Before we dive in, it’s important to note that a decent understanding of JavaScript is required for this tutorial. If you need to brush up your JavaScript skills, I highly recommend checking out the “You Don’t Know JavaScript” book series [^1^].

Firebase Cloud Functions provide an official way to create reactive functions and offer a variety of triggers, including authentication triggers, Google pub/sub triggers, real-time database triggers, and more [^2^]. In this tutorial, we will primarily focus on real-time database triggers and demonstrate how to implement and test them using a package called “Quiver Functions” [^3^].

To get started, make sure you have Firebase set up in your project. If you haven’t done so already, you can follow the blog write-up [^4^] or refer to the official Firebase Cloud Functions documentation [^5^]. Once you have set up Firebase, you can proceed with the steps outlined in this video.

In this video, Chris Esslyn will guide you through the process of setting up a local testing environment for your Firebase Cloud Functions. This will help you streamline your development cycle by eliminating the need to constantly upload and test your functions on Firebase. Chris will also introduce a package called “Quiver Functions,” which contains his favorite functions and can be easily imported and deployed in multiple projects [^6^].

Follow along as Chris demonstrates how to deploy a function, set up the necessary configurations, and implement real-time database triggers. He will explain the code logic and provide insights on best practices for creating effective Firebase Cloud Functions. By the end of this tutorial, you will have a solid understanding of how to leverage the power of Firebase Cloud Functions in your projects.

To access the GitHub repositories mentioned in this video, refer to the links below:
– Quiver Functions GitHub: [GitHub Link]( [^3^]
– Tutorial GitHub: [GitHub Link]( [^7^]

Don’t miss out on this opportunity to level up your JavaScript skills and explore the exciting world of Firebase Cloud Functions! Subscribe to our channel and hit the notification bell to stay updated with the latest tutorials.

Keywords: Firebase, JavaScript, Google Cloud Platform

[^1^]: You Don’t Know JavaScript: [GitHub Link](
[^2^]: Firebase Cloud Functions Documentation: [Firebase Link](
[^3^]: Quiver Functions GitHub: [GitHub Link](
[^4^]: How To Firebase Blog Write-up: [Blog Link](
[^5^]: Firebase Cloud Functions Documentation: [Firebase Link](
[^6^]: Quiver Functions GitHub: [GitHub Link](
[^7^]: Tutorial GitHub: [GitHub Link](


JavaScript Cloud Functions require a decent understanding of JS. You don’t have to be an expert, but I can’t teach people JS, and most of the questions I get on here are about JS!

Need to learn JavaScript? Try “You Don’t Know JavaScript”:

Ready to dive into Firebase Cloud Functions? Read on!

Blog write up:

Tutorial GitHub:

Quiver Functions GitHub:

Firebase Cloud Functions docs: Faulkner

What do you think?

Written by Chris Esplin


Leave a Reply
  1. Hi, Chris!
    I already have a function running for a Firebase project. It's simple, it works.
    Now, I'm playing with the Google Cloud Functions for another project, with the help of Serverless Framework, to kind of organize the functions. I thought that after 5 functions or more it can be a mess.
    Do you have any experience with this Serverless framework? It's super simple, but all I can find is AWS Lambda examples.
    And I ask myself: Will I be able to access the Firebase Events with the GCF instead of the Firebase Functions?

  2. This is useful, I was wondering if you could make a tutorial for Unity firebase SDK for calling cloud functions with parameters, adding data to Cloud Firestore and retrieving it. I have a hard time figuring it out, I will eventually make it work, but I think it would be useful to have a tutorial. Anyways, keep going with the awesome work! All the best!

  3. Chris, can you explain what environment you are developing? What IDE or editor are you using? I suggest you spend a few seconds explaining that at the beginning of your videos. There are so many development environments available. You can't assume that the viewer knows yours.

  4. hi, thank for your work.
    I am try on cloud functions de current user id active in de session…. help me!!!! thanks…

    const admin = require('firebase-admin');
    const firestore = new Firestore();

    exports.createGroup = functions.firestore.document('groups/{groupId}/group/basic').onCreate(event => {
    const currentUserId= ????????????????????????????

  5. man you should really start using typescript, you can trust a stranger on this. Also taking a look at the quiver package, you can use barrels so you can import everything from a single file.

  6. hey Chris, that's a great tutorial.

    I've tested Emailjs locally and when i translated it to a function, and tried invoking it, I'm facing this error:
    ( I'm using MAILGUN as EMAIL provider )

    { Error: connection encountered an error
    at module.exports (/user_code/node_modules/emailjs/smtp/error.js:3:13)
    at TLSSocket.error (/user_code/node_modules/emailjs/smtp/response.js:26:29)
    at emitOne (events.js:101:20)
    at TLSSocket.emit (events.js:188:7)
    at connectErrorNT (net.js:1020:8)
    at _combinedTickCallback (internal/process/next_tick.js:74:11)
    at process._tickDomainCallback (internal/process/next_tick.js:122:9)
    code: 5,
    { Error: getaddrinfo ENOTFOUND
    at errnoException (dns.js:28:10)
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)
    code: 'ENOTFOUND',
    errno: 'ENOTFOUND',
    syscall: 'getaddrinfo',
    hostname: '',
    host: '',
    port: 465 },
    smtp: undefined }

    Can you help resolving it ?
    Any solution to set up a CronJob using nodejs module Cron ?

  7. I've used Lambda and Firebase in the past and Google functions beat the pants off of it. The integration that the Firebase team have done with their CLI is great – only complaint is have to push all function rather than cherry pick which one needs to be updated.

  8. I'm really struggling to build a full app with AWS + serverless, but I'm finding the process really painful (esp debugging and loval testing), Arns, authorisers, api gateway etc etc. Would you recommend Firebases instead? One bad thing I've heard about firebase is that you are limited to the amount of cloud functions you can fire a second.

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