Supabase is an open source Firebase alternative. Start your project with a Postgres database, Authentication, instant APIs, Edge Functions, Realtime subscriptions, and Storage.

Custom objects

doc()

Emulating TypeScript functions

"serve": "tsc -w | firebase emulators:start --only functions",

In this writeup, we will be discussing one such important prerequisite that is React Native database. We can call it the backbone of React Native applications.

only the @firebase/testing Node.js module supports mocking auth in Security Rules, making unit tests much easier

There's not a way to do this. What you could do instead is use Cloud Functions HTTP triggers as an API for writing data. It could check the conditions you want, then return a response that indicates what's wrong with the data the client is trying to write. I understand this is far from ideal, but it might be the best option you have right now

An index of groups can help a great deal here:

You can use any Firebase Database URL as a REST endpoint. All you need to do is append .json to the end of the URL and send a request

The section of code with exports.app = functions.https.onRequest(app); exposes your express application so that it can be accessed. If you don't have the exports section, your application won't start correctly

we’re going to use cloud firestore because it’s easier to work with and more versatile

Firebase Functions enables you to use the ExpressJS library to host a Serverless API. Serverless is just a term for a system that runs without physical servers. This is a bit of a misnomer because it technically does run on a server, however, you’re letting the provider handle the hosting aspect

Firebase Database (Real-time database or Firestore)

to create a dynamic link with a deep link you need to provide a PATH name followed by *example.com/APP

Firebase console. This is useful if you're creating promo links to share on social media

four ways you can create a Dynamic Link

take care that your Dynamic Link URLs don't conflict with your web URLs. When you configure Dynamic Links to use a particular URL prefix, all URLs that begin with that prefix are treated as Dynamic Links, so you can't use URLs with that prefix to point to ordinary hosted content

When using account linking it is important to be aware that some limitations exist. First, only two accounts can participate in a link. If an attempt is made to link to an account which is already linked, the new link will replace the original link. It is also not possible to link two accounts associated with the same authentication provider. While a Facebook account may be linked with a Google account, for example, it is not possible to link two Google provider based accounts. An attempt to link accounts from the same provider will result in an exception containing a message which reads as follows: User has already been linked to the given provider. Account linking can only be performed at the point at which a new account is created. It is not possible, in other words, to link two pre-existing accounts. A workaround to this limitation is to delete one of the two accounts and then establish the link while re-creating the account

recommend using Firebase when the API calls involve any user data and the API is intended to be used in flows where the user has an user interface

:ci

Firebase Vs MongoDB : Battle of the Best Databases 2019You are here:HomeDev & DesignFirebase Vs MongoDB : Battle…

const sinon = require('sinon'); const mockResponse = () => { const res = {}; res.status = sinon.stub().returns(res); res.json = sinon.stub().returns(res); return res; };

To return data after an asynchronous operation, return a promise.

You can use the value event to read a static snapshot of the contents at a given path, as they existed at the time of the event. This method is triggered once when the listener is attached and again every time the data, including children, changes. The event callback is passed a snapshot containing all data at that location, including child data.