What steps should I follow to set up my Firebase configuration to connect to the Firebase emulator functions endpoint?

Prerequisites:

  • Firebase SDK: ^7.21.1

I'm trying to connect my Vue.js Frontend with the local firebase functions emulator located at localhost:5001. I am struggling to determine which configuration properties need to be set in order to access the emulator endpoint.

Below is my current configuration:

const firebaseConfig = {
  apiKey: "AIzaSyCKvB9ZluNGOP4s4r8igflwuK-9WVsoThg",
  authDomain: "company-29f5c.firebaseapp.com",
  databaseURL: "https://company-29f5c.firebaseio.com",
  projectId: "company-bar",
  storageBucket: "company-29f5c.appspot.com",
  messagingSenderId: "1051704079600",
  appId: "1:1051704079600:web:f99d362c43b87346",
  notificationWebhookUrl: "http://localhost:5001/company-dev/us-central1/notificationsMixpanelWebhook",
  cloudFunctionBaseUrl: "http://localhost:5001/company-dev/us-central1",
};

I attempted to update the cloudFunctionBaseUrl property, assuming it was responsible for changing the functions endpoint URL. Despite setting it to localhost:5001/..., the app continued to call this URL:

https://us-central1-company-bar.cloudfunctions.net

I realized that the URL is constructed using the projectId property instead of being overwritten by the cloudFunctionBaseUrl.

How can I modify the composed URL from:

https://us-central1-company-bar.cloudfunctions.net

to:

http://localhost:5001/company-dev/us-central1

I expected there to be a configuration flag like enableEmulator, but could not find any reference to it in the documentation.

Answer №1

It's accurate to say that there is a function for this purpose, known as useEmulator. Calling it is necessary for each segment of firebase that you wish to emulate to the best of my knowledge.

To implement functions utilizing the emulator, you can follow a procedure similar to the example below:

firebase.functions().useEmulator('localhost', 5001);

This should be done after the firebase.initializeApp call.

For further details, refer to the official documentation: https://firebase.google.com/docs/emulator-suite/connect_functions#

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