https://github.com/mikcsabee/auth-emulator-example

Example Firebase Emulator Authentication
https://github.com/mikcsabee/auth-emulator-example

firebase firebase-auth firebase-emulator newman postman postman-collection

Last synced: 2 months ago
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Example Firebase Emulator Authentication

• Host: GitHub
• URL: https://github.com/mikcsabee/auth-emulator-example
• Owner: mikcsabee
• License: mit
• Created: 2023-05-07T09:28:18.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2025-12-30T20:13:17.000Z (3 months ago)
• Last Synced: 2026-01-03T18:26:05.913Z (2 months ago)
• Topics: firebase, firebase-auth, firebase-emulator, newman, postman, postman-collection
• Language: TypeScript
• Homepage:
• Size: 2.62 MB
• Stars: 4
• Watchers: 1
• Forks: 0
• Open Issues: 39
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
Firebase Authentication in Emulator Example

===========================================

This repository shows an example, of how to automatically create a valid `idToken` in Postman, before requests and use it as a bearer token.

The attached `PostmanCollection.json` executes a script which invokes the emulated Authenticatior api to create a user. The script is also available here: `postman/src/pre-request_script.ts`.

When you import the `PostmanCollection.json` into your Postman workspace you need to set the `apiKey`. (In order to have an `apiKey`, you need to create an `App` in Firebase).

![Postman variables](doc/postman_1.png)

You also need to generate and download the `serviceAccountKey.json` to the functions folder from the `Project settings`, `Service accounts` tab.

After this to setps, you should be able to run the `HelloWorld` method, which validates the token and returns the user data.

![Postman HelloWorld](doc/postman_2.png)

The created user should be visible in the [Emulator UI](http://localhost:4000/auth).