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Using the Emulator

Firebase automatically detects the emulator and the current project when it is running. If your Firebase Emulator uses the default settings, you only have to connect your project and the emulator will be detected automatically.

As soon as the emulator is running, you can select it from the project selector.

The Emulator UI is running on port 4000 by default. If you are using a different port, you can change it in the settings.

  1. Open the settings by pressing CMD/CTRL + ,.
  2. Enter the port in the Emulator UI Port field on the General tab.