How can I implement Firebase authentication with TypeScript and security rules?

How can I implement Firebase authentication with TypeScript and security rules?

To implement Firebase authentication with TypeScript, start by setting up Firebase in your project. Then, use the Firebase Auth SDK to manage user authentication. For security rules, define them in the Firebase console to control access to your database.

What are some common security rules I should consider?

Common security rules include validating user authentication, restricting access to certain data based on user roles, and ensuring that users can only read/write their own data.

Can you show me an example of a security rule?

Sure! Here's a simple rule:

{
  "rules": {
    ".read": "auth != null",
    ".write": "auth != null && auth.uid == userId"
  }
}

This rule allows authenticated users to read data and write only to their own user ID.

How do I test these security rules?

You can test security rules using the Firebase Emulator Suite, which allows you to simulate requests and see how your rules behave without affecting production data.