Firebase Callable Function + CORS

Question

I\'m trying to call a callable Cloud Function from my app, but I\'m facing CORS issues.

I can\'t enable Cors since I don\'t have access to the request and response

Answer 1

I had this problem with some of my Firebase functions but not others. I eventually fixed it by doing this:

1. Commenting the function out in index.js
2. Running firebase deploy
3. Entering y at the prompt to delete the function
4. Waiting for 5 to 10 minutes
5. Removing the comments around the function and running firebase deploy again

Without any changes to the function itself, it now runs without any CORS issues.