(production) resources, there is no chance of data change, usage and billing

Stronger safety, since if your code accidentally invokes non-emulated.

Easier setup, since you can run the emulators without ever creating a.

We recommend you use demo projects wherever possible. If your app attempts to interact with a resourceįor which an emulator isn't running, that code will fail. When working with demo Firebase projects, your apps and code interact withĮmulators only. Project IDs for demo projects have the demo- prefix. These projects are usually accessed via codelabs or Interact with the live resource (database instance, storageĪ demo Firebase project has no real Firebase configuration and When working with real Firebase projects, you can run emulators for anyįor any products you are not emulating, your apps and code will Real projects have live resources, like database instances, storageīuckets, functions, or any other resource you set up for that Firebase

Local Emulator Suite supports emulation of real Firebase projects andĪ real Firebase project is one you created and configured (most likely

To select the project to use, before you start the emulators, in the CLI runįirebase use in your working directory. The Firebase Local Emulator Suite emulates products for a single Firebase project. The Local Emulator Suite and review its CLI commands.

You understand the overall Firebase Local Emulator Suite workflow, Before connecting your app to the Cloud Firestore emulator, make sure that

Emulator online